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authorLinus Torvalds <torvalds@linux-foundation.org>2014-01-24 06:34:03 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2014-01-24 06:34:03 +0400
commitf341535193c338b4ce4af8e32be51e6aae7f22a6 (patch)
treed054a10be84681b93ce53c348cde0d764e1e24a2 /arch
parent13c789a6b219aa23f917466c7e630566106b14c2 (diff)
parent857989a7fdd2f6de42272578b8aaa413ed6e63e4 (diff)
downloadlinux-f341535193c338b4ce4af8e32be51e6aae7f22a6.tar.xz
Merge branch 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm
Pull ARM updates from Russell King: "In this set, we have: - Refactoring of some of the old StrongARM-1100 GPIO code to make things simpler by Dmitry Eremin-Solenikov - Read-only and non-executable support for modules on ARM from Laura Abbot - Removal of unnecessary set_drvdata() calls in AMBA code - Some non-executable support for kernel lowmem mappings at the 1MB section granularity, and dumping of kernel page tables via debugfs - Some improvements for the timer/clock code on Footbridge platforms, and cleanup some of the LED code there - Fix fls/ffs() signatures to match x86 to prevent build warnings, particularly where these are used with min/max() macros - Avoid using the bootmem allocator on ARM (patches from Santosh Shilimkar) - Various asid/unaligned access updates from Will Deacon" * 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm: (51 commits) ARM: SMP implementations are not supposed to return from smp_ops.cpu_die() ARM: ignore memory below PHYS_OFFSET Fix select-induced Kconfig warning for ZBOOT_ROM ARM: fix ffs/fls implementations to match x86 ARM: 7935/1: sa1100: collie: add gpio-keys configuration ARM: 7932/1: bcm: Add DEBUG_LL console support ARM: 7929/1: Remove duplicate SCHED_HRTICK config option ARM: 7928/1: kconfig: select HAVE_EFFICIENT_UNALIGNED_ACCESS for CPUv6+ && MMU ARM: 7927/1: dcache: select DCACHE_WORD_ACCESS for big-endian CPUs ARM: 7926/1: mm: flesh out and fix the comments in the ASID allocator ARM: 7925/1: mm: keep track of last ASID allocation to improve bitmap searching ARM: 7924/1: mm: don't bother with reserved ttbr0 when running with LPAE ARM: PCI: add legacy IDE IRQ implementation ARM: footbridge: cleanup LEDs code ARM: pgd allocation: retry on failure ARM: footbridge: add one-shot mode for DC21285 timer ARM: footbridge: add sched_clock implementation ARM: 7922/1: l2x0: add Marvell Tauros3 support ARM: 7877/1: use built-in byte swap function ARM: 7921/1: mcpm: remove redundant dsb instructions prior to sev ...
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/Kconfig14
-rw-r--r--arch/arm/Kconfig.debug39
-rw-r--r--arch/arm/boot/compressed/Makefile15
-rw-r--r--arch/arm/common/mcpm_entry.c7
-rw-r--r--arch/arm/include/asm/bitops.h54
-rw-r--r--arch/arm/include/asm/cacheflush.h5
-rw-r--r--arch/arm/include/asm/checksum.h34
-rw-r--r--arch/arm/include/asm/hardware/cache-l2x0.h1
-rw-r--r--arch/arm/include/asm/mach/map.h27
-rw-r--r--arch/arm/include/asm/pci.h5
-rw-r--r--arch/arm/include/asm/pgtable-2level.h1
-rw-r--r--arch/arm/include/asm/pgtable-3level.h1
-rw-r--r--arch/arm/include/asm/pgtable.h2
-rw-r--r--arch/arm/include/asm/word-at-a-time.h18
-rw-r--r--arch/arm/kernel/armksyms.c4
-rw-r--r--arch/arm/kernel/entry-v7m.S2
-rw-r--r--arch/arm/kernel/etm.c6
-rw-r--r--arch/arm/kernel/setup.c57
-rw-r--r--arch/arm/kernel/smp.c6
-rw-r--r--arch/arm/kernel/tcm.c4
-rw-r--r--arch/arm/kernel/topology.c12
-rw-r--r--arch/arm/kernel/traps.c2
-rw-r--r--arch/arm/lib/Makefile2
-rw-r--r--arch/arm/lib/backtrace.S20
-rw-r--r--arch/arm/lib/bswapsdi2.S36
-rw-r--r--arch/arm/mach-at91/setup.c2
-rw-r--r--arch/arm/mach-footbridge/common.c5
-rw-r--r--arch/arm/mach-footbridge/common.h2
-rw-r--r--arch/arm/mach-footbridge/dc21285-timer.c39
-rw-r--r--arch/arm/mach-footbridge/ebsa285.c18
-rw-r--r--arch/arm/mach-footbridge/include/mach/hardware.h6
-rw-r--r--arch/arm/mach-imx/Kconfig1
-rw-r--r--arch/arm/mach-omap2/io.c4
-rw-r--r--arch/arm/mach-omap2/omap4-common.c2
-rw-r--r--arch/arm/mach-sa1100/assabet.c145
-rw-r--r--arch/arm/mach-sa1100/collie.c35
-rw-r--r--arch/arm/mach-sa1100/h3100.c54
-rw-r--r--arch/arm/mach-sa1100/h3600.c74
-rw-r--r--arch/arm/mach-sa1100/include/mach/assabet.h6
-rw-r--r--arch/arm/mach-ux500/setup.h2
-rw-r--r--arch/arm/mm/Makefile1
-rw-r--r--arch/arm/mm/cache-l2x0.c48
-rw-r--r--arch/arm/mm/cache-tauros3.h41
-rw-r--r--arch/arm/mm/cache-v7.S14
-rw-r--r--arch/arm/mm/context.c41
-rw-r--r--arch/arm/mm/dma-mapping.c6
-rw-r--r--arch/arm/mm/dump.c345
-rw-r--r--arch/arm/mm/init.c62
-rw-r--r--arch/arm/mm/ioremap.c4
-rw-r--r--arch/arm/mm/mmu.c126
-rw-r--r--arch/arm/mm/pgd.c2
51 files changed, 1148 insertions, 311 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index ab1689c96a71..0b6d8bf1bc34 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -6,12 +6,13 @@ config ARM
select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
select ARCH_HAVE_CUSTOM_GPIO_H
select ARCH_MIGHT_HAVE_PC_PARPORT
+ select ARCH_USE_BUILTIN_BSWAP
select ARCH_USE_CMPXCHG_LOCKREF
select ARCH_WANT_IPC_PARSE_VERSION
select BUILDTIME_EXTABLE_SORT if MMU
select CLONE_BACKWARDS
select CPU_PM if (SUSPEND || CPU_IDLE)
- select DCACHE_WORD_ACCESS if (CPU_V6 || CPU_V6K || CPU_V7) && !CPU_BIG_ENDIAN && MMU
+ select DCACHE_WORD_ACCESS if HAVE_EFFICIENT_UNALIGNED_ACCESS
select GENERIC_ATOMIC64 if (CPU_V7M || CPU_V6 || !CPU_32v6K || !AEABI)
select GENERIC_CLOCKEVENTS_BROADCAST if SMP
select GENERIC_IDLE_POLL_SETUP
@@ -36,6 +37,7 @@ config ARM
select HAVE_DMA_ATTRS
select HAVE_DMA_CONTIGUOUS if MMU
select HAVE_DYNAMIC_FTRACE if (!XIP_KERNEL)
+ select HAVE_EFFICIENT_UNALIGNED_ACCESS if (CPU_V6 || CPU_V6K || CPU_V7) && MMU
select HAVE_FTRACE_MCOUNT_RECORD if (!XIP_KERNEL)
select HAVE_FUNCTION_GRAPH_TRACER if (!THUMB2_KERNEL)
select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
@@ -63,6 +65,7 @@ config ARM
select IRQ_FORCED_THREADING
select KTIME_SCALAR
select MODULES_USE_ELF_REL
+ select NO_BOOTMEM
select OLD_SIGACTION
select OLD_SIGSUSPEND3
select PERF_USE_VMALLOC
@@ -1651,9 +1654,6 @@ config HZ
config SCHED_HRTICK
def_bool HIGH_RES_TIMERS
-config SCHED_HRTICK
- def_bool HIGH_RES_TIMERS
-
config THUMB2_KERNEL
bool "Compile the kernel in Thumb-2 mode" if !CPU_THUMBONLY
depends on (CPU_V7 || CPU_V7M) && !CPU_V6 && !CPU_V6K
@@ -1934,6 +1934,7 @@ config ZBOOT_ROM_BSS
config ZBOOT_ROM
bool "Compressed boot loader in ROM/flash"
depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
+ depends on !ARM_APPENDED_DTB && !XIP_KERNEL && !AUTO_ZRELADDR
help
Say Y here if you intend to execute your compressed kernel image
(zImage) directly from ROM or flash. If unsure, say N.
@@ -1969,7 +1970,7 @@ endchoice
config ARM_APPENDED_DTB
bool "Use appended device tree blob to zImage (EXPERIMENTAL)"
- depends on OF && !ZBOOT_ROM
+ depends on OF
help
With this option, the boot code will look for a device tree binary
(DTB) appended to zImage
@@ -2057,7 +2058,7 @@ endchoice
config XIP_KERNEL
bool "Kernel Execute-In-Place from ROM"
- depends on !ZBOOT_ROM && !ARM_LPAE && !ARCH_MULTIPLATFORM
+ depends on !ARM_LPAE && !ARCH_MULTIPLATFORM
help
Execute-In-Place allows the kernel to run from non-volatile storage
directly addressable by the CPU, such as NOR flash. This saves RAM
@@ -2120,7 +2121,6 @@ config CRASH_DUMP
config AUTO_ZRELADDR
bool "Auto calculation of the decompressed kernel image address"
- depends on !ZBOOT_ROM
help
ZRELADDR is the physical address where the decompressed kernel
image will be placed. If AUTO_ZRELADDR is selected, the address
diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug
index 5765abf5ce84..9afabbb5e798 100644
--- a/arch/arm/Kconfig.debug
+++ b/arch/arm/Kconfig.debug
@@ -2,6 +2,18 @@ menu "Kernel hacking"
source "lib/Kconfig.debug"
+config ARM_PTDUMP
+ bool "Export kernel pagetable layout to userspace via debugfs"
+ depends on DEBUG_KERNEL
+ select DEBUG_FS
+ ---help---
+ Say Y here if you want to show the kernel pagetable layout in a
+ debugfs file. This information is only useful for kernel developers
+ who are working in architecture specific areas of the kernel.
+ It is probably not a good idea to enable this feature in a production
+ kernel.
+ If in doubt, say "N"
+
config STRICT_DEVMEM
bool "Filter access to /dev/mem"
depends on MMU
@@ -94,6 +106,17 @@ choice
depends on ARCH_BCM2835
select DEBUG_UART_PL01X
+ config DEBUG_BCM_KONA_UART
+ bool "Kernel low-level debugging messages via BCM KONA UART"
+ depends on ARCH_BCM
+ select DEBUG_UART_8250
+ help
+ Say Y here if you want kernel low-level debugging support
+ on Broadcom SoC platforms.
+ This low level debug works for Broadcom
+ mobile SoCs in the Kona family of chips (e.g. bcm28155,
+ bcm11351, etc...)
+
config DEBUG_CLPS711X_UART1
bool "Kernel low-level debugging messages via UART1"
depends on ARCH_CLPS711X
@@ -988,6 +1011,7 @@ config DEBUG_UART_PHYS
default 0x20064000 if DEBUG_RK29_UART1 || DEBUG_RK3X_UART2
default 0x20068000 if DEBUG_RK29_UART2 || DEBUG_RK3X_UART3
default 0x20201000 if DEBUG_BCM2835
+ default 0x3e000000 if DEBUG_BCM_KONA_UART
default 0x4000e400 if DEBUG_LL_UART_EFM32
default 0x40090000 if ARCH_LPC32XX
default 0x40100000 if DEBUG_PXA_UART1
@@ -1049,6 +1073,7 @@ config DEBUG_UART_VIRT
default 0xfe018000 if DEBUG_MMP_UART3
default 0xfe100000 if DEBUG_IMX23_UART || DEBUG_IMX28_UART
default 0xfe230000 if DEBUG_PICOXCELL_UART
+ default 0xfe300000 if DEBUG_BCM_KONA_UART
default 0xfe800000 if ARCH_IOP32X
default 0xfeb00000 if DEBUG_HI3620_UART || DEBUG_HI3716_UART
default 0xfeb24000 if DEBUG_RK3X_UART0
@@ -1091,7 +1116,8 @@ config DEBUG_UART_8250_WORD
default y if DEBUG_PICOXCELL_UART || DEBUG_SOCFPGA_UART || \
ARCH_KEYSTONE || \
DEBUG_DAVINCI_DMx_UART0 || DEBUG_DAVINCI_DA8XX_UART1 || \
- DEBUG_DAVINCI_DA8XX_UART2 || DEBUG_DAVINCI_TNETV107X_UART1
+ DEBUG_DAVINCI_DA8XX_UART2 || DEBUG_DAVINCI_TNETV107X_UART1 || \
+ DEBUG_BCM_KONA_UART
config DEBUG_UART_8250_FLOW_CONTROL
bool "Enable flow control for 8250 UART"
@@ -1150,4 +1176,15 @@ config PID_IN_CONTEXTIDR
additional instructions during context switch. Say Y here only if you
are planning to use hardware trace tools with this kernel.
+config DEBUG_SET_MODULE_RONX
+ bool "Set loadable kernel module data as NX and text as RO"
+ depends on MODULES
+ ---help---
+ This option helps catch unintended modifications to loadable
+ kernel module's text and read-only data. It also prevents execution
+ of module data. Such protection may interfere with run-time code
+ patching and dynamic kernel tracing - and they might also protect
+ against certain classes of kernel exploits.
+ If in doubt, say "N".
+
endmenu
diff --git a/arch/arm/boot/compressed/Makefile b/arch/arm/boot/compressed/Makefile
index e7190bb5998e..4bb86d9a749d 100644
--- a/arch/arm/boot/compressed/Makefile
+++ b/arch/arm/boot/compressed/Makefile
@@ -108,12 +108,12 @@ endif
targets := vmlinux vmlinux.lds \
piggy.$(suffix_y) piggy.$(suffix_y).o \
- lib1funcs.o lib1funcs.S ashldi3.o ashldi3.S \
- font.o font.c head.o misc.o $(OBJS)
+ lib1funcs.o lib1funcs.S ashldi3.o ashldi3.S bswapsdi2.o \
+ bswapsdi2.S font.o font.c head.o misc.o $(OBJS)
# Make sure files are removed during clean
extra-y += piggy.gzip piggy.lzo piggy.lzma piggy.xzkern piggy.lz4 \
- lib1funcs.S ashldi3.S $(libfdt) $(libfdt_hdrs) \
+ lib1funcs.S ashldi3.S bswapsdi2.S $(libfdt) $(libfdt_hdrs) \
hyp-stub.S
ifeq ($(CONFIG_FUNCTION_TRACER),y)
@@ -156,6 +156,12 @@ ashldi3 = $(obj)/ashldi3.o
$(obj)/ashldi3.S: $(srctree)/arch/$(SRCARCH)/lib/ashldi3.S
$(call cmd,shipped)
+# For __bswapsi2, __bswapdi2
+bswapsdi2 = $(obj)/bswapsdi2.o
+
+$(obj)/bswapsdi2.S: $(srctree)/arch/$(SRCARCH)/lib/bswapsdi2.S
+ $(call cmd,shipped)
+
# We need to prevent any GOTOFF relocs being used with references
# to symbols in the .bss section since we cannot relocate them
# independently from the rest at run time. This can be achieved by
@@ -177,7 +183,8 @@ if [ $(words $(ZRELADDR)) -gt 1 -a "$(CONFIG_AUTO_ZRELADDR)" = "" ]; then \
fi
$(obj)/vmlinux: $(obj)/vmlinux.lds $(obj)/$(HEAD) $(obj)/piggy.$(suffix_y).o \
- $(addprefix $(obj)/, $(OBJS)) $(lib1funcs) $(ashldi3) FORCE
+ $(addprefix $(obj)/, $(OBJS)) $(lib1funcs) $(ashldi3) \
+ $(bswapsdi2) FORCE
@$(check_for_multiple_zreladdr)
$(call if_changed,ld)
@$(check_for_bad_syms)
diff --git a/arch/arm/common/mcpm_entry.c b/arch/arm/common/mcpm_entry.c
index 26020a03f659..1e361abc29eb 100644
--- a/arch/arm/common/mcpm_entry.c
+++ b/arch/arm/common/mcpm_entry.c
@@ -35,8 +35,7 @@ void mcpm_set_early_poke(unsigned cpu, unsigned cluster,
unsigned long *poke = &mcpm_entry_early_pokes[cluster][cpu][0];
poke[0] = poke_phys_addr;
poke[1] = poke_val;
- __cpuc_flush_dcache_area((void *)poke, 8);
- outer_clean_range(__pa(poke), __pa(poke + 2));
+ __sync_cache_range_w(poke, 2 * sizeof(*poke));
}
static const struct mcpm_platform_ops *platform_ops;
@@ -167,7 +166,7 @@ void __mcpm_cpu_down(unsigned int cpu, unsigned int cluster)
dmb();
mcpm_sync.clusters[cluster].cpus[cpu].cpu = CPU_DOWN;
sync_cache_w(&mcpm_sync.clusters[cluster].cpus[cpu].cpu);
- dsb_sev();
+ sev();
}
/*
@@ -183,7 +182,7 @@ void __mcpm_outbound_leave_critical(unsigned int cluster, int state)
dmb();
mcpm_sync.clusters[cluster].cluster = state;
sync_cache_w(&mcpm_sync.clusters[cluster].cluster);
- dsb_sev();
+ sev();
}
/*
diff --git a/arch/arm/include/asm/bitops.h b/arch/arm/include/asm/bitops.h
index e691ec91e4d3..b2e298a90d76 100644
--- a/arch/arm/include/asm/bitops.h
+++ b/arch/arm/include/asm/bitops.h
@@ -254,25 +254,59 @@ static inline int constant_fls(int x)
}
/*
- * On ARMv5 and above those functions can be implemented around
- * the clz instruction for much better code efficiency.
+ * On ARMv5 and above those functions can be implemented around the
+ * clz instruction for much better code efficiency. __clz returns
+ * the number of leading zeros, zero input will return 32, and
+ * 0x80000000 will return 0.
*/
+static inline unsigned int __clz(unsigned int x)
+{
+ unsigned int ret;
+
+ asm("clz\t%0, %1" : "=r" (ret) : "r" (x));
+ return ret;
+}
+
+/*
+ * fls() returns zero if the input is zero, otherwise returns the bit
+ * position of the last set bit, where the LSB is 1 and MSB is 32.
+ */
static inline int fls(int x)
{
- int ret;
-
if (__builtin_constant_p(x))
return constant_fls(x);
- asm("clz\t%0, %1" : "=r" (ret) : "r" (x));
- ret = 32 - ret;
- return ret;
+ return 32 - __clz(x);
+}
+
+/*
+ * __fls() returns the bit position of the last bit set, where the
+ * LSB is 0 and MSB is 31. Zero input is undefined.
+ */
+static inline unsigned long __fls(unsigned long x)
+{
+ return fls(x) - 1;
+}
+
+/*
+ * ffs() returns zero if the input was zero, otherwise returns the bit
+ * position of the first set bit, where the LSB is 1 and MSB is 32.
+ */
+static inline int ffs(int x)
+{
+ return fls(x & -x);
+}
+
+/*
+ * __ffs() returns the bit position of the first bit set, where the
+ * LSB is 0 and MSB is 31. Zero input is undefined.
+ */
+static inline unsigned long __ffs(unsigned long x)
+{
+ return ffs(x) - 1;
}
-#define __fls(x) (fls(x) - 1)
-#define ffs(x) ({ unsigned long __t = (x); fls(__t & -__t); })
-#define __ffs(x) (ffs(x) - 1)
#define ffz(x) __ffs( ~(x) )
#endif
diff --git a/arch/arm/include/asm/cacheflush.h b/arch/arm/include/asm/cacheflush.h
index ee753f1749cd..e9a49fe0284e 100644
--- a/arch/arm/include/asm/cacheflush.h
+++ b/arch/arm/include/asm/cacheflush.h
@@ -481,4 +481,9 @@ static inline void __sync_cache_range_r(volatile void *p, size_t size)
: : : "r0","r1","r2","r3","r4","r5","r6","r7", \
"r9","r10","lr","memory" )
+int set_memory_ro(unsigned long addr, int numpages);
+int set_memory_rw(unsigned long addr, int numpages);
+int set_memory_x(unsigned long addr, int numpages);
+int set_memory_nx(unsigned long addr, int numpages);
+
#endif
diff --git a/arch/arm/include/asm/checksum.h b/arch/arm/include/asm/checksum.h
index 6dcc16430868..523315115478 100644
--- a/arch/arm/include/asm/checksum.h
+++ b/arch/arm/include/asm/checksum.h
@@ -87,19 +87,33 @@ static inline __wsum
csum_tcpudp_nofold(__be32 saddr, __be32 daddr, unsigned short len,
unsigned short proto, __wsum sum)
{
- __asm__(
- "adds %0, %1, %2 @ csum_tcpudp_nofold \n\
- adcs %0, %0, %3 \n"
+ u32 lenprot = len | proto << 16;
+ if (__builtin_constant_p(sum) && sum == 0) {
+ __asm__(
+ "adds %0, %1, %2 @ csum_tcpudp_nofold0 \n\t"
#ifdef __ARMEB__
- "adcs %0, %0, %4 \n"
+ "adcs %0, %0, %3 \n\t"
#else
- "adcs %0, %0, %4, lsl #8 \n"
+ "adcs %0, %0, %3, ror #8 \n\t"
#endif
- "adcs %0, %0, %5 \n\
- adc %0, %0, #0"
- : "=&r"(sum)
- : "r" (sum), "r" (daddr), "r" (saddr), "r" (len), "Ir" (htons(proto))
- : "cc");
+ "adc %0, %0, #0"
+ : "=&r" (sum)
+ : "r" (daddr), "r" (saddr), "r" (lenprot)
+ : "cc");
+ } else {
+ __asm__(
+ "adds %0, %1, %2 @ csum_tcpudp_nofold \n\t"
+ "adcs %0, %0, %3 \n\t"
+#ifdef __ARMEB__
+ "adcs %0, %0, %4 \n\t"
+#else
+ "adcs %0, %0, %4, ror #8 \n\t"
+#endif
+ "adc %0, %0, #0"
+ : "=&r"(sum)
+ : "r" (sum), "r" (daddr), "r" (saddr), "r" (lenprot)
+ : "cc");
+ }
return sum;
}
/*
diff --git a/arch/arm/include/asm/hardware/cache-l2x0.h b/arch/arm/include/asm/hardware/cache-l2x0.h
index 3b2c40b5bfa2..6795ff743b3d 100644
--- a/arch/arm/include/asm/hardware/cache-l2x0.h
+++ b/arch/arm/include/asm/hardware/cache-l2x0.h
@@ -131,6 +131,7 @@ struct l2x0_regs {
unsigned long prefetch_ctrl;
unsigned long pwr_ctrl;
unsigned long ctrl;
+ unsigned long aux2_ctrl;
};
extern struct l2x0_regs l2x0_saved_regs;
diff --git a/arch/arm/include/asm/mach/map.h b/arch/arm/include/asm/mach/map.h
index 2fe141fcc8d6..f98c7f32c9c8 100644
--- a/arch/arm/include/asm/mach/map.h
+++ b/arch/arm/include/asm/mach/map.h
@@ -22,18 +22,21 @@ struct map_desc {
};
/* types 0-3 are defined in asm/io.h */
-#define MT_UNCACHED 4
-#define MT_CACHECLEAN 5
-#define MT_MINICLEAN 6
-#define MT_LOW_VECTORS 7
-#define MT_HIGH_VECTORS 8
-#define MT_MEMORY 9
-#define MT_ROM 10
-#define MT_MEMORY_NONCACHED 11
-#define MT_MEMORY_DTCM 12
-#define MT_MEMORY_ITCM 13
-#define MT_MEMORY_SO 14
-#define MT_MEMORY_DMA_READY 15
+enum {
+ MT_UNCACHED = 4,
+ MT_CACHECLEAN,
+ MT_MINICLEAN,
+ MT_LOW_VECTORS,
+ MT_HIGH_VECTORS,
+ MT_MEMORY_RWX,
+ MT_MEMORY_RW,
+ MT_ROM,
+ MT_MEMORY_RWX_NONCACHED,
+ MT_MEMORY_RW_DTCM,
+ MT_MEMORY_RWX_ITCM,
+ MT_MEMORY_RW_SO,
+ MT_MEMORY_DMA_READY,
+};
#ifdef CONFIG_MMU
extern void iotable_init(struct map_desc *, int);
diff --git a/arch/arm/include/asm/pci.h b/arch/arm/include/asm/pci.h
index a98a2e112fae..680a83e94467 100644
--- a/arch/arm/include/asm/pci.h
+++ b/arch/arm/include/asm/pci.h
@@ -57,12 +57,9 @@ static inline void pci_dma_burst_advice(struct pci_dev *pdev,
extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
enum pci_mmap_state mmap_state, int write_combine);
-/*
- * Dummy implementation; always return 0.
- */
static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
{
- return 0;
+ return channel ? 15 : 14;
}
#endif /* __KERNEL__ */
diff --git a/arch/arm/include/asm/pgtable-2level.h b/arch/arm/include/asm/pgtable-2level.h
index 86a659a19526..dfff709fda3c 100644
--- a/arch/arm/include/asm/pgtable-2level.h
+++ b/arch/arm/include/asm/pgtable-2level.h
@@ -160,6 +160,7 @@ static inline pmd_t *pmd_offset(pud_t *pud, unsigned long addr)
return (pmd_t *)pud;
}
+#define pmd_large(pmd) (pmd_val(pmd) & 2)
#define pmd_bad(pmd) (pmd_val(pmd) & 2)
#define copy_pmd(pmdpd,pmdps) \
diff --git a/arch/arm/include/asm/pgtable-3level.h b/arch/arm/include/asm/pgtable-3level.h
index 4f9503908dca..03243f7eeddf 100644
--- a/arch/arm/include/asm/pgtable-3level.h
+++ b/arch/arm/include/asm/pgtable-3level.h
@@ -142,6 +142,7 @@
PMD_TYPE_TABLE)
#define pmd_sect(pmd) ((pmd_val(pmd) & PMD_TYPE_MASK) == \
PMD_TYPE_SECT)
+#define pmd_large(pmd) pmd_sect(pmd)
#define pud_clear(pudp) \
do { \
diff --git a/arch/arm/include/asm/pgtable.h b/arch/arm/include/asm/pgtable.h
index 1571d126e9dd..7d59b524f2af 100644
--- a/arch/arm/include/asm/pgtable.h
+++ b/arch/arm/include/asm/pgtable.h
@@ -254,6 +254,8 @@ PTE_BIT_FUNC(mkclean, &= ~L_PTE_DIRTY);
PTE_BIT_FUNC(mkdirty, |= L_PTE_DIRTY);
PTE_BIT_FUNC(mkold, &= ~L_PTE_YOUNG);
PTE_BIT_FUNC(mkyoung, |= L_PTE_YOUNG);
+PTE_BIT_FUNC(mkexec, &= ~L_PTE_XN);
+PTE_BIT_FUNC(mknexec, |= L_PTE_XN);
static inline pte_t pte_mkspecial(pte_t pte) { return pte; }
diff --git a/arch/arm/include/asm/word-at-a-time.h b/arch/arm/include/asm/word-at-a-time.h
index 4d52f92967a6..a6d0a29861e7 100644
--- a/arch/arm/include/asm/word-at-a-time.h
+++ b/arch/arm/include/asm/word-at-a-time.h
@@ -48,10 +48,14 @@ static inline unsigned long find_zero(unsigned long mask)
return ret;
}
-#ifdef CONFIG_DCACHE_WORD_ACCESS
-
#define zero_bytemask(mask) (mask)
+#else /* __ARMEB__ */
+#include <asm-generic/word-at-a-time.h>
+#endif
+
+#ifdef CONFIG_DCACHE_WORD_ACCESS
+
/*
* Load an unaligned word from kernel space.
*
@@ -73,7 +77,11 @@ static inline unsigned long load_unaligned_zeropad(const void *addr)
" bic %2, %2, #0x3\n"
" ldr %0, [%2]\n"
" lsl %1, %1, #0x3\n"
+#ifndef __ARMEB__
" lsr %0, %0, %1\n"
+#else
+ " lsl %0, %0, %1\n"
+#endif
" b 2b\n"
" .popsection\n"
" .pushsection __ex_table,\"a\"\n"
@@ -86,11 +94,5 @@ static inline unsigned long load_unaligned_zeropad(const void *addr)
return ret;
}
-
#endif /* DCACHE_WORD_ACCESS */
-
-#else /* __ARMEB__ */
-#include <asm-generic/word-at-a-time.h>
-#endif
-
#endif /* __ASM_ARM_WORD_AT_A_TIME_H */
diff --git a/arch/arm/kernel/armksyms.c b/arch/arm/kernel/armksyms.c
index 1f031ddd0667..85e664b6a5f1 100644
--- a/arch/arm/kernel/armksyms.c
+++ b/arch/arm/kernel/armksyms.c
@@ -35,6 +35,8 @@ extern void __ucmpdi2(void);
extern void __udivsi3(void);
extern void __umodsi3(void);
extern void __do_div64(void);
+extern void __bswapsi2(void);
+extern void __bswapdi2(void);
extern void __aeabi_idiv(void);
extern void __aeabi_idivmod(void);
@@ -114,6 +116,8 @@ EXPORT_SYMBOL(__ucmpdi2);
EXPORT_SYMBOL(__udivsi3);
EXPORT_SYMBOL(__umodsi3);
EXPORT_SYMBOL(__do_div64);
+EXPORT_SYMBOL(__bswapsi2);
+EXPORT_SYMBOL(__bswapdi2);
#ifdef CONFIG_AEABI
EXPORT_SYMBOL(__aeabi_idiv);
diff --git a/arch/arm/kernel/entry-v7m.S b/arch/arm/kernel/entry-v7m.S
index 52b26432c9a9..2260f1855820 100644
--- a/arch/arm/kernel/entry-v7m.S
+++ b/arch/arm/kernel/entry-v7m.S
@@ -14,8 +14,6 @@
#include <asm/thread_notify.h>
#include <asm/v7m.h>
-#include <mach/entry-macro.S>
-
#include "entry-header.S"
#ifdef CONFIG_TRACE_IRQFLAGS
diff --git a/arch/arm/kernel/etm.c b/arch/arm/kernel/etm.c
index 8ff0ecdc637f..131a6ab5f355 100644
--- a/arch/arm/kernel/etm.c
+++ b/arch/arm/kernel/etm.c
@@ -385,7 +385,6 @@ out:
return ret;
out_unmap:
- amba_set_drvdata(dev, NULL);
iounmap(t->etb_regs);
out_release:
@@ -398,8 +397,6 @@ static int etb_remove(struct amba_device *dev)
{
struct tracectx *t = amba_get_drvdata(dev);
- amba_set_drvdata(dev, NULL);
-
iounmap(t->etb_regs);
t->etb_regs = NULL;
@@ -588,7 +585,6 @@ out:
return ret;
out_unmap:
- amba_set_drvdata(dev, NULL);
iounmap(t->etm_regs);
out_release:
@@ -601,8 +597,6 @@ static int etm_remove(struct amba_device *dev)
{
struct tracectx *t = amba_get_drvdata(dev);
- amba_set_drvdata(dev, NULL);
-
iounmap(t->etm_regs);
t->etm_regs = NULL;
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index 8ce1cbd08dba..1e8b030dbefd 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -334,7 +334,7 @@ static void __init cacheid_init(void)
cacheid = CACHEID_VIVT;
}
- printk("CPU: %s data cache, %s instruction cache\n",
+ pr_info("CPU: %s data cache, %s instruction cache\n",
cache_is_vivt() ? "VIVT" :
cache_is_vipt_aliasing() ? "VIPT aliasing" :
cache_is_vipt_nonaliasing() ? "PIPT / VIPT nonaliasing" : "unknown",
@@ -416,7 +416,7 @@ void notrace cpu_init(void)
struct stack *stk = &stacks[cpu];
if (cpu >= NR_CPUS) {
- printk(KERN_CRIT "CPU%u: bad primary CPU number\n", cpu);
+ pr_crit("CPU%u: bad primary CPU number\n", cpu);
BUG();
}
@@ -484,7 +484,7 @@ void __init smp_setup_processor_id(void)
*/
set_my_cpu_offset(0);
- printk(KERN_INFO "Booting Linux on physical CPU 0x%x\n", mpidr);
+ pr_info("Booting Linux on physical CPU 0x%x\n", mpidr);
}
struct mpidr_hash mpidr_hash;
@@ -564,8 +564,8 @@ static void __init setup_processor(void)
*/
list = lookup_processor_type(read_cpuid_id());
if (!list) {
- printk("CPU configuration botched (ID %08x), unable "
- "to continue.\n", read_cpuid_id());
+ pr_err("CPU configuration botched (ID %08x), unable to continue.\n",
+ read_cpuid_id());
while (1);
}
@@ -585,9 +585,9 @@ static void __init setup_processor(void)
cpu_cache = *list->cache;
#endif
- printk("CPU: %s [%08x] revision %d (ARMv%s), cr=%08lx\n",
- cpu_name, read_cpuid_id(), read_cpuid_id() & 15,
- proc_arch[cpu_architecture()], cr_alignment);
+ pr_info("CPU: %s [%08x] revision %d (ARMv%s), cr=%08lx\n",
+ cpu_name, read_cpuid_id(), read_cpuid_id() & 15,
+ proc_arch[cpu_architecture()], cr_alignment);
snprintf(init_utsname()->machine, __NEW_UTS_LEN + 1, "%s%c",
list->arch_name, ENDIANNESS);
@@ -629,8 +629,8 @@ int __init arm_add_memory(u64 start, u64 size)
u64 aligned_start;
if (meminfo.nr_banks >= NR_BANKS) {
- printk(KERN_CRIT "NR_BANKS too low, "
- "ignoring memory at 0x%08llx\n", (long long)start);
+ pr_crit("NR_BANKS too low, ignoring memory at 0x%08llx\n",
+ (long long)start);
return -EINVAL;
}
@@ -643,14 +643,14 @@ int __init arm_add_memory(u64 start, u64 size)
#ifndef CONFIG_ARCH_PHYS_ADDR_T_64BIT
if (aligned_start > ULONG_MAX) {
- printk(KERN_CRIT "Ignoring memory at 0x%08llx outside "
- "32-bit physical address space\n", (long long)start);
+ pr_crit("Ignoring memory at 0x%08llx outside 32-bit physical address space\n",
+ (long long)start);
return -EINVAL;
}
if (aligned_start + size > ULONG_MAX) {
- printk(KERN_CRIT "Truncating memory at 0x%08llx to fit in "
- "32-bit physical address space\n", (long long)start);
+ pr_crit("Truncating memory at 0x%08llx to fit in 32-bit physical address space\n",
+ (long long)start);
/*
* To ensure bank->start + bank->size is representable in
* 32 bits, we use ULONG_MAX as the upper limit rather than 4GB.
@@ -660,6 +660,20 @@ int __init arm_add_memory(u64 start, u64 size)
}
#endif
+ if (aligned_start < PHYS_OFFSET) {
+ if (aligned_start + size <= PHYS_OFFSET) {
+ pr_info("Ignoring memory below PHYS_OFFSET: 0x%08llx-0x%08llx\n",
+ aligned_start, aligned_start + size);
+ return -EINVAL;
+ }
+
+ pr_info("Ignoring memory below PHYS_OFFSET: 0x%08llx-0x%08llx\n",
+ aligned_start, (u64)PHYS_OFFSET);
+
+ size -= PHYS_OFFSET - aligned_start;
+ aligned_start = PHYS_OFFSET;
+ }
+
bank->start = aligned_start;
bank->size = size & ~(phys_addr_t)(PAGE_SIZE - 1);
@@ -817,18 +831,17 @@ static void __init reserve_crashkernel(void)
if (ret)
return;
- ret = reserve_bootmem(crash_base, crash_size, BOOTMEM_EXCLUSIVE);
+ ret = memblock_reserve(crash_base, crash_size);
if (ret < 0) {
- printk(KERN_WARNING "crashkernel reservation failed - "
- "memory is in use (0x%lx)\n", (unsigned long)crash_base);
+ pr_warn("crashkernel reservation failed - memory is in use (0x%lx)\n",
+ (unsigned long)crash_base);
return;
}
- printk(KERN_INFO "Reserving %ldMB of memory at %ldMB "
- "for crashkernel (System RAM: %ldMB)\n",
- (unsigned long)(crash_size >> 20),
- (unsigned long)(crash_base >> 20),
- (unsigned long)(total_mem >> 20));
+ pr_info("Reserving %ldMB of memory at %ldMB for crashkernel (System RAM: %ldMB)\n",
+ (unsigned long)(crash_size >> 20),
+ (unsigned long)(crash_base >> 20),
+ (unsigned long)(total_mem >> 20));
crashk_res.start = crash_base;
crashk_res.end = crash_base + crash_size - 1;
diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c
index dc894ab3622b..b7b4c86e338b 100644
--- a/arch/arm/kernel/smp.c
+++ b/arch/arm/kernel/smp.c
@@ -105,8 +105,7 @@ int __cpu_up(unsigned int cpu, struct task_struct *idle)
secondary_data.pgdir = get_arch_pgd(idmap_pgd);
secondary_data.swapper_pg_dir = get_arch_pgd(swapper_pg_dir);
#endif
- __cpuc_flush_dcache_area(&secondary_data, sizeof(secondary_data));
- outer_clean_range(__pa(&secondary_data), __pa(&secondary_data + 1));
+ sync_cache_w(&secondary_data);
/*
* Now bring the CPU into our world.
@@ -294,6 +293,9 @@ void __ref cpu_die(void)
if (smp_ops.cpu_die)
smp_ops.cpu_die(cpu);
+ pr_warn("CPU%u: smp_ops.cpu_die() returned, trying to resuscitate\n",
+ cpu);
+
/*
* Do not return to the idle loop - jump back to the secondary
* cpu initialisation. There's some initialisation which needs
diff --git a/arch/arm/kernel/tcm.c b/arch/arm/kernel/tcm.c
index f50f19e5c138..7a3be1d4d0b1 100644
--- a/arch/arm/kernel/tcm.c
+++ b/arch/arm/kernel/tcm.c
@@ -52,7 +52,7 @@ static struct map_desc dtcm_iomap[] __initdata = {
.virtual = DTCM_OFFSET,
.pfn = __phys_to_pfn(DTCM_OFFSET),
.length = 0,
- .type = MT_MEMORY_DTCM
+ .type = MT_MEMORY_RW_DTCM
}
};
@@ -61,7 +61,7 @@ static struct map_desc itcm_iomap[] __initdata = {
.virtual = ITCM_OFFSET,
.pfn = __phys_to_pfn(ITCM_OFFSET),
.length = 0,
- .type = MT_MEMORY_ITCM
+ .type = MT_MEMORY_RWX_ITCM,
}
};
diff --git a/arch/arm/kernel/topology.c b/arch/arm/kernel/topology.c
index 85a87370f144..0bc94b1fd1ae 100644
--- a/arch/arm/kernel/topology.c
+++ b/arch/arm/kernel/topology.c
@@ -68,16 +68,16 @@ struct cpu_efficiency {
* Processors that are not defined in the table,
* use the default SCHED_POWER_SCALE value for cpu_scale.
*/
-struct cpu_efficiency table_efficiency[] = {
+static const struct cpu_efficiency table_efficiency[] = {
{"arm,cortex-a15", 3891},
{"arm,cortex-a7", 2048},
{NULL, },
};
-unsigned long *__cpu_capacity;
+static unsigned long *__cpu_capacity;
#define cpu_capacity(cpu) __cpu_capacity[cpu]
-unsigned long middle_capacity = 1;
+static unsigned long middle_capacity = 1;
/*
* Iterate all CPUs' descriptor in DT and compute the efficiency
@@ -89,7 +89,7 @@ unsigned long middle_capacity = 1;
*/
static void __init parse_dt_topology(void)
{
- struct cpu_efficiency *cpu_eff;
+ const struct cpu_efficiency *cpu_eff;
struct device_node *cn = NULL;
unsigned long min_capacity = (unsigned long)(-1);
unsigned long max_capacity = 0;
@@ -158,7 +158,7 @@ static void __init parse_dt_topology(void)
* boot. The update of all CPUs is in O(n^2) for heteregeneous system but the
* function returns directly for SMP system.
*/
-void update_cpu_power(unsigned int cpu)
+static void update_cpu_power(unsigned int cpu)
{
if (!cpu_capacity(cpu))
return;
@@ -185,7 +185,7 @@ const struct cpumask *cpu_coregroup_mask(int cpu)
return &cpu_topology[cpu].core_sibling;
}
-void update_siblings_masks(unsigned int cpuid)
+static void update_siblings_masks(unsigned int cpuid)
{
struct cputopo_arm *cpu_topo, *cpuid_topo = &cpu_topology[cpuid];
int cpu;
diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c
index 4636d56af2db..172ee18ff124 100644
--- a/arch/arm/kernel/traps.c
+++ b/arch/arm/kernel/traps.c
@@ -62,7 +62,7 @@ static void dump_mem(const char *, const char *, unsigned long, unsigned long);
void dump_backtrace_entry(unsigned long where, unsigned long from, unsigned long frame)
{
#ifdef CONFIG_KALLSYMS
- printk("[<%08lx>] (%pS) from [<%08lx>] (%pS)\n", where, (void *)where, from, (void *)from);
+ printk("[<%08lx>] (%ps) from [<%08lx>] (%pS)\n", where, (void *)where, from, (void *)from);
#else
printk("Function entered at [<%08lx>] from [<%08lx>]\n", where, from);
#endif
diff --git a/arch/arm/lib/Makefile b/arch/arm/lib/Makefile
index 47d7338561de..0573faab96ad 100644
--- a/arch/arm/lib/Makefile
+++ b/arch/arm/lib/Makefile
@@ -13,7 +13,7 @@ lib-y := backtrace.o changebit.o csumipv6.o csumpartial.o \
ashldi3.o ashrdi3.o lshrdi3.o muldi3.o \
ucmpdi2.o lib1funcs.o div64.o \
io-readsb.o io-writesb.o io-readsl.o io-writesl.o \
- call_with_stack.o
+ call_with_stack.o bswapsdi2.o
mmu-y := clear_user.o copy_page.o getuser.o putuser.o
diff --git a/arch/arm/lib/backtrace.S b/arch/arm/lib/backtrace.S
index cd07b5814c23..4102be617fce 100644
--- a/arch/arm/lib/backtrace.S
+++ b/arch/arm/lib/backtrace.S
@@ -80,14 +80,14 @@ for_each_frame: tst frame, mask @ Check for address exceptions
ldr r1, [sv_pc, #-4] @ if stmfd sp!, {args} exists,
ldr r3, .Ldsi+4
- teq r3, r1, lsr #10
+ teq r3, r1, lsr #11
ldreq r0, [frame, #-8] @ get sp
subeq r0, r0, #4 @ point at the last arg
bleq .Ldumpstm @ dump saved registers
1004: ldr r1, [sv_pc, #0] @ if stmfd sp!, {..., fp, ip, lr, pc}
ldr r3, .Ldsi @ instruction exists,
- teq r3, r1, lsr #10
+ teq r3, r1, lsr #11
subeq r0, frame, #16
bleq .Ldumpstm @ dump saved registers
@@ -128,11 +128,11 @@ ENDPROC(c_backtrace)
beq 2f
add r7, r7, #1
teq r7, #6
- moveq r7, #1
- moveq r1, #'\n'
- movne r1, #' '
- ldr r3, [stack], #-4
- mov r2, reg
+ moveq r7, #0
+ adr r3, .Lcr
+ addne r3, r3, #1 @ skip newline
+ ldr r2, [stack], #-4
+ mov r1, reg
adr r0, .Lfp
bl printk
2: subs reg, reg, #1
@@ -142,11 +142,11 @@ ENDPROC(c_backtrace)
blne printk
ldmfd sp!, {instr, reg, stack, r7, pc}
-.Lfp: .asciz "%cr%d:%08x"
+.Lfp: .asciz " r%d:%08x%s"
.Lcr: .asciz "\n"
.Lbad: .asciz "Backtrace aborted due to bad frame pointer <%p>\n"
.align
-.Ldsi: .word 0xe92dd800 >> 10 @ stmfd sp!, {... fp, ip, lr, pc}
- .word 0xe92d0000 >> 10 @ stmfd sp!, {}
+.Ldsi: .word 0xe92dd800 >> 11 @ stmfd sp!, {... fp, ip, lr, pc}
+ .word 0xe92d0000 >> 11 @ stmfd sp!, {}
#endif
diff --git a/arch/arm/lib/bswapsdi2.S b/arch/arm/lib/bswapsdi2.S
new file mode 100644
index 000000000000..9fcdd154eff9
--- /dev/null
+++ b/arch/arm/lib/bswapsdi2.S
@@ -0,0 +1,36 @@
+#include <linux/linkage.h>
+
+#if __LINUX_ARM_ARCH__ >= 6
+ENTRY(__bswapsi2)
+ rev r0, r0
+ bx lr
+ENDPROC(__bswapsi2)
+
+ENTRY(__bswapdi2)
+ rev r3, r0
+ rev r0, r1
+ mov r1, r3
+ bx lr
+ENDPROC(__bswapdi2)
+#else
+ENTRY(__bswapsi2)
+ eor r3, r0, r0, ror #16
+ mov r3, r3, lsr #8
+ bic r3, r3, #0xff00
+ eor r0, r3, r0, ror #8
+ mov pc, lr
+ENDPROC(__bswapsi2)
+
+ENTRY(__bswapdi2)
+ mov ip, r1
+ eor r3, ip, ip, ror #16
+ eor r1, r0, r0, ror #16
+ mov r1, r1, lsr #8
+ mov r3, r3, lsr #8
+ bic r3, r3, #0xff00
+ bic r1, r1, #0xff00
+ eor r1, r1, r0, ror #8
+ eor r0, r3, ip, ror #8
+ mov pc, lr
+ENDPROC(__bswapdi2)
+#endif
diff --git a/arch/arm/mach-at91/setup.c b/arch/arm/mach-at91/setup.c
index 094b3459c288..2742e00ec5d6 100644
--- a/arch/arm/mach-at91/setup.c
+++ b/arch/arm/mach-at91/setup.c
@@ -81,7 +81,7 @@ void __init at91_init_sram(int bank, unsigned long base, unsigned int length)
desc->pfn = __phys_to_pfn(base);
desc->length = length;
- desc->type = MT_MEMORY_NONCACHED;
+ desc->type = MT_MEMORY_RWX_NONCACHED;
pr_info("AT91: sram at 0x%lx of 0x%x mapped at 0x%lx\n",
base, length, desc->virtual);
diff --git a/arch/arm/mach-footbridge/common.c b/arch/arm/mach-footbridge/common.c
index e0091685fd48..9e8220e38398 100644
--- a/arch/arm/mach-footbridge/common.c
+++ b/arch/arm/mach-footbridge/common.c
@@ -143,11 +143,6 @@ static struct map_desc fb_common_io_desc[] __initdata = {
.pfn = __phys_to_pfn(DC21285_ARMCSR_BASE),
.length = ARMCSR_SIZE,
.type = MT_DEVICE,
- }, {
- .virtual = XBUS_BASE,
- .pfn = __phys_to_pfn(0x40000000),
- .length = XBUS_SIZE,
- .type = MT_DEVICE,
}
};
diff --git a/arch/arm/mach-footbridge/common.h b/arch/arm/mach-footbridge/common.h
index 56607b3a773e..b911e5587ecf 100644
--- a/arch/arm/mach-footbridge/common.h
+++ b/arch/arm/mach-footbridge/common.h
@@ -10,3 +10,5 @@ extern void footbridge_init_irq(void);
extern void isa_init_irq(unsigned int irq);
extern void footbridge_restart(enum reboot_mode, const char *);
+
+extern void footbridge_sched_clock(void);
diff --git a/arch/arm/mach-footbridge/dc21285-timer.c b/arch/arm/mach-footbridge/dc21285-timer.c
index 782f6c71fa0a..3971104d32d4 100644
--- a/arch/arm/mach-footbridge/dc21285-timer.c
+++ b/arch/arm/mach-footbridge/dc21285-timer.c
@@ -9,6 +9,7 @@
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
+#include <linux/sched_clock.h>
#include <asm/irq.h>
@@ -46,6 +47,16 @@ static struct clocksource cksrc_dc21285 = {
.flags = CLOCK_SOURCE_IS_CONTINUOUS,
};
+static int ckevt_dc21285_set_next_event(unsigned long delta,
+ struct clock_event_device *c)
+{
+ *CSR_TIMER1_CLR = 0;
+ *CSR_TIMER1_LOAD = delta;
+ *CSR_TIMER1_CNTL = TIMER_CNTL_ENABLE | TIMER_CNTL_DIV16;
+
+ return 0;
+}
+
static void ckevt_dc21285_set_mode(enum clock_event_mode mode,
struct clock_event_device *c)
{
@@ -58,7 +69,9 @@ static void ckevt_dc21285_set_mode(enum clock_event_mode mode,
TIMER_CNTL_DIV16;
break;
- default:
+ case CLOCK_EVT_MODE_ONESHOT:
+ case CLOCK_EVT_MODE_UNUSED:
+ case CLOCK_EVT_MODE_SHUTDOWN:
*CSR_TIMER1_CNTL = 0;
break;
}
@@ -66,9 +79,11 @@ static void ckevt_dc21285_set_mode(enum clock_event_mode mode,
static struct clock_event_device ckevt_dc21285 = {
.name = "dc21285_timer1",
- .features = CLOCK_EVT_FEAT_PERIODIC,
+ .features = CLOCK_EVT_FEAT_PERIODIC |
+ CLOCK_EVT_FEAT_ONESHOT,
.rating = 200,
.irq = IRQ_TIMER1,
+ .set_next_event = ckevt_dc21285_set_next_event,
.set_mode = ckevt_dc21285_set_mode,
};
@@ -78,6 +93,10 @@ static irqreturn_t timer1_interrupt(int irq, void *dev_id)
*CSR_TIMER1_CLR = 0;
+ /* Stop the timer if in one-shot mode */
+ if (ce->mode == CLOCK_EVT_MODE_ONESHOT)
+ *CSR_TIMER1_CNTL = 0;
+
ce->event_handler(ce);
return IRQ_HANDLED;
@@ -105,3 +124,19 @@ void __init footbridge_timer_init(void)
ce->cpumask = cpumask_of(smp_processor_id());
clockevents_config_and_register(ce, rate, 0x4, 0xffffff);
}
+
+static u32 notrace footbridge_read_sched_clock(void)
+{
+ return ~*CSR_TIMER3_VALUE;
+}
+
+void __init footbridge_sched_clock(void)
+{
+ unsigned rate = DIV_ROUND_CLOSEST(mem_fclk_21285, 16);
+
+ *CSR_TIMER3_LOAD = 0;
+ *CSR_TIMER3_CLR = 0;
+ *CSR_TIMER3_CNTL = TIMER_CNTL_ENABLE | TIMER_CNTL_DIV16;
+
+ setup_sched_clock(footbridge_read_sched_clock, 24, rate);
+}
diff --git a/arch/arm/mach-footbridge/ebsa285.c b/arch/arm/mach-footbridge/ebsa285.c
index 1a7235fb52ac..aee8300f3490 100644
--- a/arch/arm/mach-footbridge/ebsa285.c
+++ b/arch/arm/mach-footbridge/ebsa285.c
@@ -4,6 +4,7 @@
* EBSA285 machine fixup
*/
#include <linux/init.h>
+#include <linux/io.h>
#include <linux/spinlock.h>
#include <linux/slab.h>
#include <linux/leds.h>
@@ -17,6 +18,11 @@
/* LEDs */
#if defined(CONFIG_NEW_LEDS) && defined(CONFIG_LEDS_CLASS)
+#define XBUS_AMBER_L BIT(0)
+#define XBUS_GREEN_L BIT(1)
+#define XBUS_RED_L BIT(2)
+#define XBUS_TOGGLE BIT(7)
+
struct ebsa285_led {
struct led_classdev cdev;
u8 mask;
@@ -36,6 +42,7 @@ static const struct {
};
static unsigned char hw_led_state;
+static void __iomem *xbus;
static void ebsa285_led_set(struct led_classdev *cdev,
enum led_brightness b)
@@ -47,7 +54,7 @@ static void ebsa285_led_set(struct led_classdev *cdev,
hw_led_state |= led->mask;
else
hw_led_state &= ~led->mask;
- *XBUS_LEDS = hw_led_state;
+ writeb(hw_led_state, xbus);
}
static enum led_brightness ebsa285_led_get(struct led_classdev *cdev)
@@ -65,9 +72,13 @@ static int __init ebsa285_leds_init(void)
if (!machine_is_ebsa285())
return -ENODEV;
+ xbus = ioremap(XBUS_CS2, SZ_4K);
+ if (!xbus)
+ return -ENOMEM;
+
/* 3 LEDS all off */
- hw_led_state = XBUS_LED_AMBER | XBUS_LED_GREEN | XBUS_LED_RED;
- *XBUS_LEDS = hw_led_state;
+ hw_led_state = XBUS_AMBER_L | XBUS_GREEN_L | XBUS_RED_L;
+ writeb(hw_led_state, xbus);
for (i = 0; i < ARRAY_SIZE(ebsa285_leds); i++) {
struct ebsa285_led *led;
@@ -104,6 +115,7 @@ MACHINE_START(EBSA285, "EBSA285")
.video_start = 0x000a0000,
.video_end = 0x000bffff,
.map_io = footbridge_map_io,
+ .init_early = footbridge_sched_clock,
.init_irq = footbridge_init_irq,
.init_time = footbridge_timer_init,
.restart = footbridge_restart,
diff --git a/arch/arm/mach-footbridge/include/mach/hardware.h b/arch/arm/mach-footbridge/include/mach/hardware.h
index e3d6ccac2162..02f6d7a706b1 100644
--- a/arch/arm/mach-footbridge/include/mach/hardware.h
+++ b/arch/arm/mach-footbridge/include/mach/hardware.h
@@ -51,11 +51,7 @@
#define PCIMEM_SIZE 0x01000000
#define PCIMEM_BASE MMU_IO(0xf0000000, 0x80000000)
-#define XBUS_LEDS ((volatile unsigned char *)(XBUS_BASE + 0x12000))
-#define XBUS_LED_AMBER (1 << 0)
-#define XBUS_LED_GREEN (1 << 1)
-#define XBUS_LED_RED (1 << 2)
-#define XBUS_LED_TOGGLE (1 << 8)
+#define XBUS_CS2 0x40012000
#define XBUS_SWITCH ((volatile unsigned char *)(XBUS_BASE + 0x12000))
#define XBUS_SWITCH_SWITCH ((*XBUS_SWITCH) & 15)
diff --git a/arch/arm/mach-imx/Kconfig b/arch/arm/mach-imx/Kconfig
index 7a6e6f710068..fae0578fec7e 100644
--- a/arch/arm/mach-imx/Kconfig
+++ b/arch/arm/mach-imx/Kconfig
@@ -3,7 +3,6 @@ config ARCH_MXC
select ARCH_REQUIRE_GPIOLIB
select ARM_CPU_SUSPEND if PM
select ARM_PATCH_PHYS_VIRT
- select AUTO_ZRELADDR if !ZBOOT_ROM
select CLKSRC_MMIO
select COMMON_CLK
select GENERIC_ALLOCATOR
diff --git a/arch/arm/mach-omap2/io.c b/arch/arm/mach-omap2/io.c
index cd22262a2cc0..07b68d5a7940 100644
--- a/arch/arm/mach-omap2/io.c
+++ b/arch/arm/mach-omap2/io.c
@@ -244,7 +244,7 @@ static struct map_desc omap44xx_io_desc[] __initdata = {
.virtual = OMAP4_SRAM_VA,
.pfn = __phys_to_pfn(OMAP4_SRAM_PA),
.length = PAGE_SIZE,
- .type = MT_MEMORY_SO,
+ .type = MT_MEMORY_RW_SO,
},
#endif
@@ -282,7 +282,7 @@ static struct map_desc omap54xx_io_desc[] __initdata = {
.virtual = OMAP4_SRAM_VA,
.pfn = __phys_to_pfn(OMAP4_SRAM_PA),
.length = PAGE_SIZE,
- .type = MT_MEMORY_SO,
+ .type = MT_MEMORY_RW_SO,
},
#endif
};
diff --git a/arch/arm/mach-omap2/omap4-common.c b/arch/arm/mach-omap2/omap4-common.c
index c0ab9b26be3d..dd893ec4c8f2 100644
--- a/arch/arm/mach-omap2/omap4-common.c
+++ b/arch/arm/mach-omap2/omap4-common.c
@@ -87,7 +87,7 @@ void __init omap_barriers_init(void)
dram_io_desc[0].virtual = OMAP4_DRAM_BARRIER_VA;
dram_io_desc[0].pfn = __phys_to_pfn(paddr);
dram_io_desc[0].length = size;
- dram_io_desc[0].type = MT_MEMORY_SO;
+ dram_io_desc[0].type = MT_MEMORY_RW_SO;
iotable_init(dram_io_desc, ARRAY_SIZE(dram_io_desc));
dram_sync = (void __iomem *) dram_io_desc[0].virtual;
sram_sync = (void __iomem *) OMAP4_SRAM_VA;
diff --git a/arch/arm/mach-sa1100/assabet.c b/arch/arm/mach-sa1100/assabet.c
index c9808c684152..8443a27bca2f 100644
--- a/arch/arm/mach-sa1100/assabet.c
+++ b/arch/arm/mach-sa1100/assabet.c
@@ -75,12 +75,143 @@ void ASSABET_BCR_frob(unsigned int mask, unsigned int val)
EXPORT_SYMBOL(ASSABET_BCR_frob);
+/*
+ * The codec reset goes to three devices, so we need to release
+ * the rest when any one of these requests it. However, that
+ * causes the ADV7171 to consume around 100mA - more than half
+ * the LCD-blanked power.
+ *
+ * With the ADV7171, LCD and backlight enabled, we go over
+ * budget on the MAX846 Li-Ion charger, and if no Li-Ion battery
+ * is connected, the Assabet crashes.
+ */
+#define RST_UCB1X00 (1 << 0)
+#define RST_UDA1341 (1 << 1)
+#define RST_ADV7171 (1 << 2)
+
+#define SDA GPIO_GPIO(15)
+#define SCK GPIO_GPIO(18)
+#define MOD GPIO_GPIO(17)
+
+static void adv7171_start(void)
+{
+ GPSR = SCK;
+ udelay(1);
+ GPSR = SDA;
+ udelay(2);
+ GPCR = SDA;
+}
+
+static void adv7171_stop(void)
+{
+ GPSR = SCK;
+ udelay(2);
+ GPSR = SDA;
+ udelay(1);
+}
+
+static void adv7171_send(unsigned byte)
+{
+ unsigned i;
+
+ for (i = 0; i < 8; i++, byte <<= 1) {
+ GPCR = SCK;
+ udelay(1);
+ if (byte & 0x80)
+ GPSR = SDA;
+ else
+ GPCR = SDA;
+ udelay(1);
+ GPSR = SCK;
+ udelay(1);
+ }
+ GPCR = SCK;
+ udelay(1);
+ GPSR = SDA;
+ udelay(1);
+ GPDR &= ~SDA;
+ GPSR = SCK;
+ udelay(1);
+ if (GPLR & SDA)
+ printk(KERN_WARNING "No ACK from ADV7171\n");
+ udelay(1);
+ GPCR = SCK | SDA;
+ udelay(1);
+ GPDR |= SDA;
+ udelay(1);
+}
+
+static void adv7171_write(unsigned reg, unsigned val)
+{
+ unsigned gpdr = GPDR;
+ unsigned gplr = GPLR;
+
+ ASSABET_BCR = BCR_value | ASSABET_BCR_AUDIO_ON;
+ udelay(100);
+
+ GPCR = SDA | SCK | MOD; /* clear L3 mode to ensure UDA1341 doesn't respond */
+ GPDR = (GPDR | SCK | MOD) & ~SDA;
+ udelay(10);
+ if (!(GPLR & SDA))
+ printk(KERN_WARNING "Something dragging SDA down?\n");
+ GPDR |= SDA;
+
+ adv7171_start();
+ adv7171_send(0x54);
+ adv7171_send(reg);
+ adv7171_send(val);
+ adv7171_stop();
+
+ /* Restore GPIO state for L3 bus */
+ GPSR = gplr & (SDA | SCK | MOD);
+ GPCR = (~gplr) & (SDA | SCK | MOD);
+ GPDR = gpdr;
+}
+
+static void adv7171_sleep(void)
+{
+ /* Put the ADV7171 into sleep mode */
+ adv7171_write(0x04, 0x40);
+}
+
+static unsigned codec_nreset;
+
+static void assabet_codec_reset(unsigned mask, int set)
+{
+ unsigned long flags;
+ bool old;
+
+ local_irq_save(flags);
+ old = !codec_nreset;
+ if (set)
+ codec_nreset &= ~mask;
+ else
+ codec_nreset |= mask;
+
+ if (old != !codec_nreset) {
+ if (codec_nreset) {
+ ASSABET_BCR_set(ASSABET_BCR_NCODEC_RST);
+ adv7171_sleep();
+ } else {
+ ASSABET_BCR_clear(ASSABET_BCR_NCODEC_RST);
+ }
+ }
+ local_irq_restore(flags);
+}
+
static void assabet_ucb1x00_reset(enum ucb1x00_reset state)
{
- if (state == UCB_RST_PROBE)
- ASSABET_BCR_set(ASSABET_BCR_CODEC_RST);
+ int set = state == UCB_RST_REMOVE || state == UCB_RST_SUSPEND ||
+ state == UCB_RST_PROBE_FAIL;
+ assabet_codec_reset(RST_UCB1X00, set);
}
+void assabet_uda1341_reset(int set)
+{
+ assabet_codec_reset(RST_UDA1341, set);
+}
+EXPORT_SYMBOL(assabet_uda1341_reset);
+
/*
* Assabet flash support code.
@@ -155,12 +286,9 @@ static int assabet_irda_set_power(struct device *dev, unsigned int state)
0
};
- if (state < 4) {
- state = bcr_state[state];
- ASSABET_BCR_clear(state ^ (ASSABET_BCR_IRDA_MD1|
- ASSABET_BCR_IRDA_MD0));
- ASSABET_BCR_set(state);
- }
+ if (state < 4)
+ ASSABET_BCR_frob(ASSABET_BCR_IRDA_MD1 | ASSABET_BCR_IRDA_MD0,
+ bcr_state[state]);
return 0;
}
@@ -180,6 +308,7 @@ static struct irda_platform_data assabet_irda_data = {
static struct ucb1x00_plat_data assabet_ucb1x00_data = {
.reset = assabet_ucb1x00_reset,
.gpio_base = -1,
+ .can_wakeup = 1,
};
static struct mcp_plat_data assabet_mcp_data = {
diff --git a/arch/arm/mach-sa1100/collie.c b/arch/arm/mach-sa1100/collie.c
index 7fb96ebdc0fb..831a15824ec8 100644
--- a/arch/arm/mach-sa1100/collie.c
+++ b/arch/arm/mach-sa1100/collie.c
@@ -27,6 +27,8 @@
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/timer.h>
+#include <linux/gpio_keys.h>
+#include <linux/input.h>
#include <linux/gpio.h>
#include <linux/pda_power.h>
@@ -242,10 +244,43 @@ struct platform_device collie_locomo_device = {
.resource = locomo_resources,
};
+static struct gpio_keys_button collie_gpio_keys[] = {
+ {
+ .type = EV_PWR,
+ .code = KEY_RESERVED,
+ .gpio = COLLIE_GPIO_ON_KEY,
+ .desc = "On key",
+ .wakeup = 1,
+ .active_low = 1,
+ },
+ {
+ .type = EV_PWR,
+ .code = KEY_WAKEUP,
+ .gpio = COLLIE_GPIO_WAKEUP,
+ .desc = "Sync",
+ .wakeup = 1,
+ .active_low = 1,
+ },
+};
+
+static struct gpio_keys_platform_data collie_gpio_keys_data = {
+ .buttons = collie_gpio_keys,
+ .nbuttons = ARRAY_SIZE(collie_gpio_keys),
+};
+
+static struct platform_device collie_gpio_keys_device = {
+ .name = "gpio-keys",
+ .id = -1,
+ .dev = {
+ .platform_data = &collie_gpio_keys_data,
+ },
+};
+
static struct platform_device *devices[] __initdata = {
&collie_locomo_device,
&colliescoop_device,
&collie_power_device,
+ &collie_gpio_keys_device,
};
static struct mtd_partition collie_partitions[] = {
diff --git a/arch/arm/mach-sa1100/h3100.c b/arch/arm/mach-sa1100/h3100.c
index b8f2b151539b..daa27c474c13 100644
--- a/arch/arm/mach-sa1100/h3100.c
+++ b/arch/arm/mach-sa1100/h3100.c
@@ -28,15 +28,35 @@
/*
* helper for sa1100fb
*/
+static struct gpio h3100_lcd_gpio[] = {
+ { H3100_GPIO_LCD_3V_ON, GPIOF_OUT_INIT_LOW, "LCD 3V" },
+ { H3XXX_EGPIO_LCD_ON, GPIOF_OUT_INIT_LOW, "LCD ON" },
+};
+
+static bool h3100_lcd_request(void)
+{
+ static bool h3100_lcd_ok;
+ int rc;
+
+ if (h3100_lcd_ok)
+ return true;
+
+ rc = gpio_request_array(h3100_lcd_gpio, ARRAY_SIZE(h3100_lcd_gpio));
+ if (rc)
+ pr_err("%s: can't request GPIOs\n", __func__);
+ else
+ h3100_lcd_ok = true;
+
+ return h3100_lcd_ok;
+}
+
static void h3100_lcd_power(int enable)
{
- if (!gpio_request(H3XXX_EGPIO_LCD_ON, "LCD ON")) {
- gpio_set_value(H3100_GPIO_LCD_3V_ON, enable);
- gpio_direction_output(H3XXX_EGPIO_LCD_ON, enable);
- gpio_free(H3XXX_EGPIO_LCD_ON);
- } else {
- pr_err("%s: can't request H3XXX_EGPIO_LCD_ON\n", __func__);
- }
+ if (!h3100_lcd_request())
+ return;
+
+ gpio_set_value(H3100_GPIO_LCD_3V_ON, enable);
+ gpio_set_value(H3XXX_EGPIO_LCD_ON, enable);
}
static struct sa1100fb_mach_info h3100_lcd_info = {
@@ -69,6 +89,11 @@ static void __init h3100_map_io(void)
/*
* This turns the IRDA power on or off on the Compaq H3100
*/
+static struct gpio h3100_irda_gpio[] = {
+ { H3100_GPIO_IR_ON, GPIOF_OUT_INIT_LOW, "IrDA power" },
+ { H3100_GPIO_IR_FSEL, GPIOF_OUT_INIT_LOW, "IrDA fsel" },
+};
+
static int h3100_irda_set_power(struct device *dev, unsigned int state)
{
gpio_set_value(H3100_GPIO_IR_ON, state);
@@ -80,18 +105,27 @@ static void h3100_irda_set_speed(struct device *dev, unsigned int speed)
gpio_set_value(H3100_GPIO_IR_FSEL, !(speed < 4000000));
}
+static int h3100_irda_startup(struct device *dev)
+{
+ return gpio_request_array(h3100_irda_gpio, sizeof(h3100_irda_gpio));
+}
+
+static void h3100_irda_shutdown(struct device *dev)
+{
+ return gpio_free_array(h3100_irda_gpio, sizeof(h3100_irda_gpio));
+}
+
static struct irda_platform_data h3100_irda_data = {
.set_power = h3100_irda_set_power,
.set_speed = h3100_irda_set_speed,
+ .startup = h3100_irda_startup,
+ .shutdown = h3100_irda_shutdown,
};
static struct gpio_default_state h3100_default_gpio[] = {
- { H3100_GPIO_IR_ON, GPIO_MODE_OUT0, "IrDA power" },
- { H3100_GPIO_IR_FSEL, GPIO_MODE_OUT0, "IrDA fsel" },
{ H3XXX_GPIO_COM_DCD, GPIO_MODE_IN, "COM DCD" },
{ H3XXX_GPIO_COM_CTS, GPIO_MODE_IN, "COM CTS" },
{ H3XXX_GPIO_COM_RTS, GPIO_MODE_OUT0, "COM RTS" },
- { H3100_GPIO_LCD_3V_ON, GPIO_MODE_OUT0, "LCD 3v" },
};
static void __init h3100_mach_init(void)
diff --git a/arch/arm/mach-sa1100/h3600.c b/arch/arm/mach-sa1100/h3600.c
index b8dc5bd22623..a663e7230141 100644
--- a/arch/arm/mach-sa1100/h3600.c
+++ b/arch/arm/mach-sa1100/h3600.c
@@ -28,35 +28,39 @@
/*
* helper for sa1100fb
*/
+static struct gpio h3600_lcd_gpio[] = {
+ { H3XXX_EGPIO_LCD_ON, GPIOF_OUT_INIT_LOW, "LCD power" },
+ { H3600_EGPIO_LCD_PCI, GPIOF_OUT_INIT_LOW, "LCD control" },
+ { H3600_EGPIO_LCD_5V_ON, GPIOF_OUT_INIT_LOW, "LCD 5v" },
+ { H3600_EGPIO_LVDD_ON, GPIOF_OUT_INIT_LOW, "LCD 9v/-6.5v" },
+};
+
+static bool h3600_lcd_request(void)
+{
+ static bool h3600_lcd_ok;
+ int rc;
+
+ if (h3600_lcd_ok)
+ return true;
+
+ rc = gpio_request_array(h3600_lcd_gpio, ARRAY_SIZE(h3600_lcd_gpio));
+ if (rc)
+ pr_err("%s: can't request GPIOs\n", __func__);
+ else
+ h3600_lcd_ok = true;
+
+ return h3600_lcd_ok;
+}
+
static void h3600_lcd_power(int enable)
{
- if (gpio_request(H3XXX_EGPIO_LCD_ON, "LCD power")) {
- pr_err("%s: can't request H3XXX_EGPIO_LCD_ON\n", __func__);
- goto err1;
- }
- if (gpio_request(H3600_EGPIO_LCD_PCI, "LCD control")) {
- pr_err("%s: can't request H3XXX_EGPIO_LCD_PCI\n", __func__);
- goto err2;
- }
- if (gpio_request(H3600_EGPIO_LCD_5V_ON, "LCD 5v")) {
- pr_err("%s: can't request H3XXX_EGPIO_LCD_5V_ON\n", __func__);
- goto err3;
- }
- if (gpio_request(H3600_EGPIO_LVDD_ON, "LCD 9v/-6.5v")) {
- pr_err("%s: can't request H3600_EGPIO_LVDD_ON\n", __func__);
- goto err4;
- }
+ if (!h3600_lcd_request())
+ return;
gpio_direction_output(H3XXX_EGPIO_LCD_ON, enable);
gpio_direction_output(H3600_EGPIO_LCD_PCI, enable);
gpio_direction_output(H3600_EGPIO_LCD_5V_ON, enable);
gpio_direction_output(H3600_EGPIO_LVDD_ON, enable);
-
- gpio_free(H3600_EGPIO_LVDD_ON);
-err4: gpio_free(H3600_EGPIO_LCD_5V_ON);
-err3: gpio_free(H3600_EGPIO_LCD_PCI);
-err2: gpio_free(H3XXX_EGPIO_LCD_ON);
-err1: return;
}
static const struct sa1100fb_rgb h3600_rgb_16 = {
@@ -93,6 +97,11 @@ static void __init h3600_map_io(void)
/*
* This turns the IRDA power on or off on the Compaq H3600
*/
+static struct gpio h3600_irda_gpio[] = {
+ { H3600_EGPIO_IR_ON, GPIOF_OUT_INIT_LOW, "IrDA power" },
+ { H3600_EGPIO_IR_FSEL, GPIOF_OUT_INIT_LOW, "IrDA fsel" },
+};
+
static int h3600_irda_set_power(struct device *dev, unsigned int state)
{
gpio_set_value(H3600_EGPIO_IR_ON, state);
@@ -106,29 +115,12 @@ static void h3600_irda_set_speed(struct device *dev, unsigned int speed)
static int h3600_irda_startup(struct device *dev)
{
- int err = gpio_request(H3600_EGPIO_IR_ON, "IrDA power");
- if (err)
- goto err1;
- err = gpio_direction_output(H3600_EGPIO_IR_ON, 0);
- if (err)
- goto err2;
- err = gpio_request(H3600_EGPIO_IR_FSEL, "IrDA fsel");
- if (err)
- goto err2;
- err = gpio_direction_output(H3600_EGPIO_IR_FSEL, 0);
- if (err)
- goto err3;
- return 0;
-
-err3: gpio_free(H3600_EGPIO_IR_FSEL);
-err2: gpio_free(H3600_EGPIO_IR_ON);
-err1: return err;
+ return gpio_request_array(h3600_irda_gpio, sizeof(h3600_irda_gpio));
}
static void h3600_irda_shutdown(struct device *dev)
{
- gpio_free(H3600_EGPIO_IR_ON);
- gpio_free(H3600_EGPIO_IR_FSEL);
+ return gpio_free_array(h3600_irda_gpio, sizeof(h3600_irda_gpio));
}
static struct irda_platform_data h3600_irda_data = {
diff --git a/arch/arm/mach-sa1100/include/mach/assabet.h b/arch/arm/mach-sa1100/include/mach/assabet.h
index 307391488c22..c23fcdb047a5 100644
--- a/arch/arm/mach-sa1100/include/mach/assabet.h
+++ b/arch/arm/mach-sa1100/include/mach/assabet.h
@@ -39,8 +39,8 @@ extern unsigned long SCR_value;
#define ASSABET_BCR_CF_PWR (1<<0) /* Compact Flash Power (1 = 3.3v, 0 = off) */
#define ASSABET_BCR_CF_RST (1<<1) /* Compact Flash Reset (1 = power up reset) */
-#define ASSABET_BCR_GFX_RST (1<<1) /* Graphics Accelerator Reset (0 = hold reset) */
-#define ASSABET_BCR_CODEC_RST (1<<2) /* 0 = Holds UCB1300, ADI7171, and UDA1341 in reset */
+#define ASSABET_BCR_NGFX_RST (1<<1) /* Graphics Accelerator Reset (0 = hold reset) */
+#define ASSABET_BCR_NCODEC_RST (1<<2) /* 0 = Holds UCB1300, ADI7171, and UDA1341 in reset */
#define ASSABET_BCR_IRDA_FSEL (1<<3) /* IRDA Frequency select (0 = SIR, 1 = MIR/ FIR) */
#define ASSABET_BCR_IRDA_MD0 (1<<4) /* Range/Power select */
#define ASSABET_BCR_IRDA_MD1 (1<<5) /* Range/Power select */
@@ -69,6 +69,8 @@ extern void ASSABET_BCR_frob(unsigned int mask, unsigned int set);
#define ASSABET_BCR_frob(x,y) do { } while (0)
#endif
+extern void assabet_uda1341_reset(int set);
+
#define ASSABET_BCR_set(x) ASSABET_BCR_frob((x), (x))
#define ASSABET_BCR_clear(x) ASSABET_BCR_frob((x), 0)
diff --git a/arch/arm/mach-ux500/setup.h b/arch/arm/mach-ux500/setup.h
index bdb356498a74..b1dd8584bed4 100644
--- a/arch/arm/mach-ux500/setup.h
+++ b/arch/arm/mach-ux500/setup.h
@@ -43,7 +43,7 @@ extern void ux500_timer_init(void);
.virtual = IO_ADDRESS(x), \
.pfn = __phys_to_pfn(x), \
.length = sz, \
- .type = MT_MEMORY, \
+ .type = MT_MEMORY_RWX, \
}
extern struct smp_operations ux500_smp_ops;
diff --git a/arch/arm/mm/Makefile b/arch/arm/mm/Makefile
index ecfe6e53f6e0..7f39ce2f841f 100644
--- a/arch/arm/mm/Makefile
+++ b/arch/arm/mm/Makefile
@@ -12,6 +12,7 @@ ifneq ($(CONFIG_MMU),y)
obj-y += nommu.o
endif
+obj-$(CONFIG_ARM_PTDUMP) += dump.o
obj-$(CONFIG_MODULES) += proc-syms.o
obj-$(CONFIG_ALIGNMENT_TRAP) += alignment.o
diff --git a/arch/arm/mm/cache-l2x0.c b/arch/arm/mm/cache-l2x0.c
index 447da6ffadd5..7abde2ce8973 100644
--- a/arch/arm/mm/cache-l2x0.c
+++ b/arch/arm/mm/cache-l2x0.c
@@ -25,6 +25,7 @@
#include <asm/cacheflush.h>
#include <asm/hardware/cache-l2x0.h>
+#include "cache-tauros3.h"
#include "cache-aurora-l2.h"
#define CACHE_LINE_SIZE 32
@@ -767,6 +768,14 @@ static void aurora_save(void)
l2x0_saved_regs.aux_ctrl = readl_relaxed(l2x0_base + L2X0_AUX_CTRL);
}
+static void __init tauros3_save(void)
+{
+ l2x0_saved_regs.aux2_ctrl =
+ readl_relaxed(l2x0_base + TAUROS3_AUX2_CTRL);
+ l2x0_saved_regs.prefetch_ctrl =
+ readl_relaxed(l2x0_base + L2X0_PREFETCH_CTRL);
+}
+
static void l2x0_resume(void)
{
if (!(readl_relaxed(l2x0_base + L2X0_CTRL) & L2X0_CTRL_EN)) {
@@ -821,6 +830,18 @@ static void aurora_resume(void)
}
}
+static void tauros3_resume(void)
+{
+ if (!(readl_relaxed(l2x0_base + L2X0_CTRL) & L2X0_CTRL_EN)) {
+ writel_relaxed(l2x0_saved_regs.aux2_ctrl,
+ l2x0_base + TAUROS3_AUX2_CTRL);
+ writel_relaxed(l2x0_saved_regs.prefetch_ctrl,
+ l2x0_base + L2X0_PREFETCH_CTRL);
+ }
+
+ l2x0_resume();
+}
+
static void __init aurora_broadcast_l2_commands(void)
{
__u32 u;
@@ -906,6 +927,15 @@ static const struct l2x0_of_data aurora_no_outer_data = {
},
};
+static const struct l2x0_of_data tauros3_data = {
+ .setup = NULL,
+ .save = tauros3_save,
+ /* Tauros3 broadcasts L1 cache operations to L2 */
+ .outer_cache = {
+ .resume = tauros3_resume,
+ },
+};
+
static const struct l2x0_of_data bcm_l2x0_data = {
.setup = pl310_of_setup,
.save = pl310_save,
@@ -922,17 +952,19 @@ static const struct l2x0_of_data bcm_l2x0_data = {
};
static const struct of_device_id l2x0_ids[] __initconst = {
- { .compatible = "arm,pl310-cache", .data = (void *)&pl310_data },
- { .compatible = "arm,l220-cache", .data = (void *)&l2x0_data },
{ .compatible = "arm,l210-cache", .data = (void *)&l2x0_data },
- { .compatible = "marvell,aurora-system-cache",
- .data = (void *)&aurora_no_outer_data},
- { .compatible = "marvell,aurora-outer-cache",
- .data = (void *)&aurora_with_outer_data},
- { .compatible = "brcm,bcm11351-a2-pl310-cache",
- .data = (void *)&bcm_l2x0_data},
+ { .compatible = "arm,l220-cache", .data = (void *)&l2x0_data },
+ { .compatible = "arm,pl310-cache", .data = (void *)&pl310_data },
{ .compatible = "bcm,bcm11351-a2-pl310-cache", /* deprecated name */
.data = (void *)&bcm_l2x0_data},
+ { .compatible = "brcm,bcm11351-a2-pl310-cache",
+ .data = (void *)&bcm_l2x0_data},
+ { .compatible = "marvell,aurora-outer-cache",
+ .data = (void *)&aurora_with_outer_data},
+ { .compatible = "marvell,aurora-system-cache",
+ .data = (void *)&aurora_no_outer_data},
+ { .compatible = "marvell,tauros3-cache",
+ .data = (void *)&tauros3_data },
{}
};
diff --git a/arch/arm/mm/cache-tauros3.h b/arch/arm/mm/cache-tauros3.h
new file mode 100644
index 000000000000..02c0a97cbc02
--- /dev/null
+++ b/arch/arm/mm/cache-tauros3.h
@@ -0,0 +1,41 @@
+/*
+ * Marvell Tauros3 cache controller includes
+ *
+ * Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
+ *
+ * based on GPL'ed 2.6 kernel sources
+ * (c) Marvell International Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#ifndef __ASM_ARM_HARDWARE_TAUROS3_H
+#define __ASM_ARM_HARDWARE_TAUROS3_H
+
+/*
+ * Marvell Tauros3 L2CC is compatible with PL310 r0p0
+ * but with PREFETCH_CTRL (r2p0) and an additional event counter.
+ * Also, there is AUX2_CTRL for some Marvell specific control.
+ */
+
+#define TAUROS3_EVENT_CNT2_CFG 0x224
+#define TAUROS3_EVENT_CNT2_VAL 0x228
+#define TAUROS3_INV_ALL 0x780
+#define TAUROS3_CLEAN_ALL 0x784
+#define TAUROS3_AUX2_CTRL 0x820
+
+/* Registers shifts and masks */
+#define TAUROS3_AUX2_CTRL_LINEFILL_BURST8_EN (1 << 2)
+
+#endif
diff --git a/arch/arm/mm/cache-v7.S b/arch/arm/mm/cache-v7.S
index b5c467a65c27..778bcf88ee79 100644
--- a/arch/arm/mm/cache-v7.S
+++ b/arch/arm/mm/cache-v7.S
@@ -146,18 +146,18 @@ flush_levels:
ldr r7, =0x7fff
ands r7, r7, r1, lsr #13 @ extract max number of the index size
loop1:
- mov r9, r4 @ create working copy of max way size
+ mov r9, r7 @ create working copy of max index
loop2:
- ARM( orr r11, r10, r9, lsl r5 ) @ factor way and cache number into r11
- THUMB( lsl r6, r9, r5 )
+ ARM( orr r11, r10, r4, lsl r5 ) @ factor way and cache number into r11
+ THUMB( lsl r6, r4, r5 )
THUMB( orr r11, r10, r6 ) @ factor way and cache number into r11
- ARM( orr r11, r11, r7, lsl r2 ) @ factor index number into r11
- THUMB( lsl r6, r7, r2 )
+ ARM( orr r11, r11, r9, lsl r2 ) @ factor index number into r11
+ THUMB( lsl r6, r9, r2 )
THUMB( orr r11, r11, r6 ) @ factor index number into r11
mcr p15, 0, r11, c7, c14, 2 @ clean & invalidate by set/way
- subs r9, r9, #1 @ decrement the way
+ subs r9, r9, #1 @ decrement the index
bge loop2
- subs r7, r7, #1 @ decrement the index
+ subs r4, r4, #1 @ decrement the way
bge loop1
skip:
add r10, r10, #2 @ increment cache number
diff --git a/arch/arm/mm/context.c b/arch/arm/mm/context.c
index 84e6f772e204..6eb97b3a7481 100644
--- a/arch/arm/mm/context.c
+++ b/arch/arm/mm/context.c
@@ -36,8 +36,8 @@
* The context ID is used by debuggers and trace logic, and
* should be unique within all running processes.
*
- * In big endian operation, the two 32 bit words are swapped if accesed by
- * non 64-bit operations.
+ * In big endian operation, the two 32 bit words are swapped if accessed
+ * by non-64-bit operations.
*/
#define ASID_FIRST_VERSION (1ULL << ASID_BITS)
#define NUM_USER_ASIDS ASID_FIRST_VERSION
@@ -78,20 +78,21 @@ void a15_erratum_get_cpumask(int this_cpu, struct mm_struct *mm,
#endif
#ifdef CONFIG_ARM_LPAE
-static void cpu_set_reserved_ttbr0(void)
-{
- /*
- * Set TTBR0 to swapper_pg_dir which contains only global entries. The
- * ASID is set to 0.
- */
- cpu_set_ttbr(0, __pa(swapper_pg_dir));
- isb();
-}
+/*
+ * With LPAE, the ASID and page tables are updated atomicly, so there is
+ * no need for a reserved set of tables (the active ASID tracking prevents
+ * any issues across a rollover).
+ */
+#define cpu_set_reserved_ttbr0()
#else
static void cpu_set_reserved_ttbr0(void)
{
u32 ttb;
- /* Copy TTBR1 into TTBR0 */
+ /*
+ * Copy TTBR1 into TTBR0.
+ * This points at swapper_pg_dir, which contains only global
+ * entries so any speculative walks are perfectly safe.
+ */
asm volatile(
" mrc p15, 0, %0, c2, c0, 1 @ read TTBR1\n"
" mcr p15, 0, %0, c2, c0, 0 @ set TTBR0\n"
@@ -179,6 +180,7 @@ static int is_reserved_asid(u64 asid)
static u64 new_context(struct mm_struct *mm, unsigned int cpu)
{
+ static u32 cur_idx = 1;
u64 asid = atomic64_read(&mm->context.id);
u64 generation = atomic64_read(&asid_generation);
@@ -193,10 +195,13 @@ static u64 new_context(struct mm_struct *mm, unsigned int cpu)
* Allocate a free ASID. If we can't find one, take a
* note of the currently active ASIDs and mark the TLBs
* as requiring flushes. We always count from ASID #1,
- * as we reserve ASID #0 to switch via TTBR0 and indicate
- * rollover events.
+ * as we reserve ASID #0 to switch via TTBR0 and to
+ * avoid speculative page table walks from hitting in
+ * any partial walk caches, which could be populated
+ * from overlapping level-1 descriptors used to map both
+ * the module area and the userspace stack.
*/
- asid = find_next_zero_bit(asid_map, NUM_USER_ASIDS, 1);
+ asid = find_next_zero_bit(asid_map, NUM_USER_ASIDS, cur_idx);
if (asid == NUM_USER_ASIDS) {
generation = atomic64_add_return(ASID_FIRST_VERSION,
&asid_generation);
@@ -204,6 +209,7 @@ static u64 new_context(struct mm_struct *mm, unsigned int cpu)
asid = find_next_zero_bit(asid_map, NUM_USER_ASIDS, 1);
}
__set_bit(asid, asid_map);
+ cur_idx = asid;
asid |= generation;
cpumask_clear(mm_cpumask(mm));
}
@@ -221,8 +227,9 @@ void check_and_switch_context(struct mm_struct *mm, struct task_struct *tsk)
__check_vmalloc_seq(mm);
/*
- * Required during context switch to avoid speculative page table
- * walking with the wrong TTBR.
+ * We cannot update the pgd and the ASID atomicly with classic
+ * MMU, so switch exclusively to global mappings to avoid
+ * speculative page table walking with the wrong TTBR.
*/
cpu_set_reserved_ttbr0();
diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
index f61a5707823a..1a77450e728a 100644
--- a/arch/arm/mm/dma-mapping.c
+++ b/arch/arm/mm/dma-mapping.c
@@ -376,7 +376,7 @@ void __init init_dma_coherent_pool_size(unsigned long size)
static int __init atomic_pool_init(void)
{
struct dma_pool *pool = &atomic_pool;
- pgprot_t prot = pgprot_dmacoherent(pgprot_kernel);
+ pgprot_t prot = pgprot_dmacoherent(PAGE_KERNEL);
gfp_t gfp = GFP_KERNEL | GFP_DMA;
unsigned long nr_pages = pool->size >> PAGE_SHIFT;
unsigned long *bitmap;
@@ -624,7 +624,7 @@ static void __free_from_contiguous(struct device *dev, struct page *page,
if (PageHighMem(page))
__dma_free_remap(cpu_addr, size);
else
- __dma_remap(page, size, pgprot_kernel);
+ __dma_remap(page, size, PAGE_KERNEL);
dma_release_from_contiguous(dev, page, size >> PAGE_SHIFT);
}
@@ -1351,7 +1351,7 @@ static void __iommu_free_atomic(struct device *dev, void *cpu_addr,
static void *arm_iommu_alloc_attrs(struct device *dev, size_t size,
dma_addr_t *handle, gfp_t gfp, struct dma_attrs *attrs)
{
- pgprot_t prot = __get_dma_pgprot(attrs, pgprot_kernel);
+ pgprot_t prot = __get_dma_pgprot(attrs, PAGE_KERNEL);
struct page **pages;
void *addr = NULL;
diff --git a/arch/arm/mm/dump.c b/arch/arm/mm/dump.c
new file mode 100644
index 000000000000..2b3a56414271
--- /dev/null
+++ b/arch/arm/mm/dump.c
@@ -0,0 +1,345 @@
+/*
+ * Debug helper to dump the current kernel pagetables of the system
+ * so that we can see what the various memory ranges are set to.
+ *
+ * Derived from x86 implementation:
+ * (C) Copyright 2008 Intel Corporation
+ *
+ * Author: Arjan van de Ven <arjan@linux.intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; version 2
+ * of the License.
+ */
+#include <linux/debugfs.h>
+#include <linux/fs.h>
+#include <linux/mm.h>
+#include <linux/seq_file.h>
+
+#include <asm/fixmap.h>
+#include <asm/pgtable.h>
+
+struct addr_marker {
+ unsigned long start_address;
+ const char *name;
+};
+
+static struct addr_marker address_markers[] = {
+ { MODULES_VADDR, "Modules" },
+ { PAGE_OFFSET, "Kernel Mapping" },
+ { 0, "vmalloc() Area" },
+ { VMALLOC_END, "vmalloc() End" },
+ { FIXADDR_START, "Fixmap Area" },
+ { CONFIG_VECTORS_BASE, "Vectors" },
+ { CONFIG_VECTORS_BASE + PAGE_SIZE * 2, "Vectors End" },
+ { -1, NULL },
+};
+
+struct pg_state {
+ struct seq_file *seq;
+ const struct addr_marker *marker;
+ unsigned long start_address;
+ unsigned level;
+ u64 current_prot;
+};
+
+struct prot_bits {
+ u64 mask;
+ u64 val;
+ const char *set;
+ const char *clear;
+};
+
+static const struct prot_bits pte_bits[] = {
+ {
+ .mask = L_PTE_USER,
+ .val = L_PTE_USER,
+ .set = "USR",
+ .clear = " ",
+ }, {
+ .mask = L_PTE_RDONLY,
+ .val = L_PTE_RDONLY,
+ .set = "ro",
+ .clear = "RW",
+ }, {
+ .mask = L_PTE_XN,
+ .val = L_PTE_XN,
+ .set = "NX",
+ .clear = "x ",
+ }, {
+ .mask = L_PTE_SHARED,
+ .val = L_PTE_SHARED,
+ .set = "SHD",
+ .clear = " ",
+ }, {
+ .mask = L_PTE_MT_MASK,
+ .val = L_PTE_MT_UNCACHED,
+ .set = "SO/UNCACHED",
+ }, {
+ .mask = L_PTE_MT_MASK,
+ .val = L_PTE_MT_BUFFERABLE,
+ .set = "MEM/BUFFERABLE/WC",
+ }, {
+ .mask = L_PTE_MT_MASK,
+ .val = L_PTE_MT_WRITETHROUGH,
+ .set = "MEM/CACHED/WT",
+ }, {
+ .mask = L_PTE_MT_MASK,
+ .val = L_PTE_MT_WRITEBACK,
+ .set = "MEM/CACHED/WBRA",
+#ifndef CONFIG_ARM_LPAE
+ }, {
+ .mask = L_PTE_MT_MASK,
+ .val = L_PTE_MT_MINICACHE,
+ .set = "MEM/MINICACHE",
+#endif
+ }, {
+ .mask = L_PTE_MT_MASK,
+ .val = L_PTE_MT_WRITEALLOC,
+ .set = "MEM/CACHED/WBWA",
+ }, {
+ .mask = L_PTE_MT_MASK,
+ .val = L_PTE_MT_DEV_SHARED,
+ .set = "DEV/SHARED",
+#ifndef CONFIG_ARM_LPAE
+ }, {
+ .mask = L_PTE_MT_MASK,
+ .val = L_PTE_MT_DEV_NONSHARED,
+ .set = "DEV/NONSHARED",
+#endif
+ }, {
+ .mask = L_PTE_MT_MASK,
+ .val = L_PTE_MT_DEV_WC,
+ .set = "DEV/WC",
+ }, {
+ .mask = L_PTE_MT_MASK,
+ .val = L_PTE_MT_DEV_CACHED,
+ .set = "DEV/CACHED",
+ },
+};
+
+static const struct prot_bits section_bits[] = {
+#ifndef CONFIG_ARM_LPAE
+ /* These are approximate */
+ {
+ .mask = PMD_SECT_AP_READ | PMD_SECT_AP_WRITE,
+ .val = 0,
+ .set = " ro",
+ }, {
+ .mask = PMD_SECT_AP_READ | PMD_SECT_AP_WRITE,
+ .val = PMD_SECT_AP_WRITE,
+ .set = " RW",
+ }, {
+ .mask = PMD_SECT_AP_READ | PMD_SECT_AP_WRITE,
+ .val = PMD_SECT_AP_READ,
+ .set = "USR ro",
+ }, {
+ .mask = PMD_SECT_AP_READ | PMD_SECT_AP_WRITE,
+ .val = PMD_SECT_AP_READ | PMD_SECT_AP_WRITE,
+ .set = "USR RW",
+#else
+ {
+ .mask = PMD_SECT_USER,
+ .val = PMD_SECT_USER,
+ .set = "USR",
+ }, {
+ .mask = PMD_SECT_RDONLY,
+ .val = PMD_SECT_RDONLY,
+ .set = "ro",
+ .clear = "RW",
+#endif
+ }, {
+ .mask = PMD_SECT_XN,
+ .val = PMD_SECT_XN,
+ .set = "NX",
+ .clear = "x ",
+ }, {
+ .mask = PMD_SECT_S,
+ .val = PMD_SECT_S,
+ .set = "SHD",
+ .clear = " ",
+ },
+};
+
+struct pg_level {
+ const struct prot_bits *bits;
+ size_t num;
+ u64 mask;
+};
+
+static struct pg_level pg_level[] = {
+ {
+ }, { /* pgd */
+ }, { /* pud */
+ }, { /* pmd */
+ .bits = section_bits,
+ .num = ARRAY_SIZE(section_bits),
+ }, { /* pte */
+ .bits = pte_bits,
+ .num = ARRAY_SIZE(pte_bits),
+ },
+};
+
+static void dump_prot(struct pg_state *st, const struct prot_bits *bits, size_t num)
+{
+ unsigned i;
+
+ for (i = 0; i < num; i++, bits++) {
+ const char *s;
+
+ if ((st->current_prot & bits->mask) == bits->val)
+ s = bits->set;
+ else
+ s = bits->clear;
+
+ if (s)
+ seq_printf(st->seq, " %s", s);
+ }
+}
+
+static void note_page(struct pg_state *st, unsigned long addr, unsigned level, u64 val)
+{
+ static const char units[] = "KMGTPE";
+ u64 prot = val & pg_level[level].mask;
+
+ if (addr < USER_PGTABLES_CEILING)
+ return;
+
+ if (!st->level) {
+ st->level = level;
+ st->current_prot = prot;
+ seq_printf(st->seq, "---[ %s ]---\n", st->marker->name);
+ } else if (prot != st->current_prot || level != st->level ||
+ addr >= st->marker[1].start_address) {
+ const char *unit = units;
+ unsigned long delta;
+
+ if (st->current_prot) {
+ seq_printf(st->seq, "0x%08lx-0x%08lx ",
+ st->start_address, addr);
+
+ delta = (addr - st->start_address) >> 10;
+ while (!(delta & 1023) && unit[1]) {
+ delta >>= 10;
+ unit++;
+ }
+ seq_printf(st->seq, "%9lu%c", delta, *unit);
+ if (pg_level[st->level].bits)
+ dump_prot(st, pg_level[st->level].bits, pg_level[st->level].num);
+ seq_printf(st->seq, "\n");
+ }
+
+ if (addr >= st->marker[1].start_address) {
+ st->marker++;
+ seq_printf(st->seq, "---[ %s ]---\n", st->marker->name);
+ }
+ st->start_address = addr;
+ st->current_prot = prot;
+ st->level = level;
+ }
+}
+
+static void walk_pte(struct pg_state *st, pmd_t *pmd, unsigned long start)
+{
+ pte_t *pte = pte_offset_kernel(pmd, 0);
+ unsigned long addr;
+ unsigned i;
+
+ for (i = 0; i < PTRS_PER_PTE; i++, pte++) {
+ addr = start + i * PAGE_SIZE;
+ note_page(st, addr, 4, pte_val(*pte));
+ }
+}
+
+static void walk_pmd(struct pg_state *st, pud_t *pud, unsigned long start)
+{
+ pmd_t *pmd = pmd_offset(pud, 0);
+ unsigned long addr;
+ unsigned i;
+
+ for (i = 0; i < PTRS_PER_PMD; i++, pmd++) {
+ addr = start + i * PMD_SIZE;
+ if (pmd_none(*pmd) || pmd_large(*pmd) || !pmd_present(*pmd))
+ note_page(st, addr, 3, pmd_val(*pmd));
+ else
+ walk_pte(st, pmd, addr);
+ }
+}
+
+static void walk_pud(struct pg_state *st, pgd_t *pgd, unsigned long start)
+{
+ pud_t *pud = pud_offset(pgd, 0);
+ unsigned long addr;
+ unsigned i;
+
+ for (i = 0; i < PTRS_PER_PUD; i++, pud++) {
+ addr = start + i * PUD_SIZE;
+ if (!pud_none(*pud)) {
+ walk_pmd(st, pud, addr);
+ } else {
+ note_page(st, addr, 2, pud_val(*pud));
+ }
+ }
+}
+
+static void walk_pgd(struct seq_file *m)
+{
+ pgd_t *pgd = swapper_pg_dir;
+ struct pg_state st;
+ unsigned long addr;
+ unsigned i, pgdoff = USER_PGTABLES_CEILING / PGDIR_SIZE;
+
+ memset(&st, 0, sizeof(st));
+ st.seq = m;
+ st.marker = address_markers;
+
+ pgd += pgdoff;
+
+ for (i = pgdoff; i < PTRS_PER_PGD; i++, pgd++) {
+ addr = i * PGDIR_SIZE;
+ if (!pgd_none(*pgd)) {
+ walk_pud(&st, pgd, addr);
+ } else {
+ note_page(&st, addr, 1, pgd_val(*pgd));
+ }
+ }
+
+ note_page(&st, 0, 0, 0);
+}
+
+static int ptdump_show(struct seq_file *m, void *v)
+{
+ walk_pgd(m);
+ return 0;
+}
+
+static int ptdump_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, ptdump_show, NULL);
+}
+
+static const struct file_operations ptdump_fops = {
+ .open = ptdump_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static int ptdump_init(void)
+{
+ struct dentry *pe;
+ unsigned i, j;
+
+ for (i = 0; i < ARRAY_SIZE(pg_level); i++)
+ if (pg_level[i].bits)
+ for (j = 0; j < pg_level[i].num; j++)
+ pg_level[i].mask |= pg_level[i].bits[j].mask;
+
+ address_markers[2].start_address = VMALLOC_START;
+
+ pe = debugfs_create_file("kernel_page_tables", 0400, NULL, NULL,
+ &ptdump_fops);
+ return pe ? 0 : -ENOMEM;
+}
+__initcall(ptdump_init);
diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
index 11eb8add7820..f57fb338cc8a 100644
--- a/arch/arm/mm/init.c
+++ b/arch/arm/mm/init.c
@@ -142,58 +142,6 @@ static void __init find_limits(unsigned long *min, unsigned long *max_low,
*max_high = bank_pfn_end(&mi->bank[mi->nr_banks - 1]);
}
-static void __init arm_bootmem_init(unsigned long start_pfn,
- unsigned long end_pfn)
-{
- struct memblock_region *reg;
- unsigned int boot_pages;
- phys_addr_t bitmap;
- pg_data_t *pgdat;
-
- /*
- * Allocate the bootmem bitmap page. This must be in a region
- * of memory which has already been mapped.
- */
- boot_pages = bootmem_bootmap_pages(end_pfn - start_pfn);
- bitmap = memblock_alloc_base(boot_pages << PAGE_SHIFT, L1_CACHE_BYTES,
- __pfn_to_phys(end_pfn));
-
- /*
- * Initialise the bootmem allocator, handing the
- * memory banks over to bootmem.
- */
- node_set_online(0);
- pgdat = NODE_DATA(0);
- init_bootmem_node(pgdat, __phys_to_pfn(bitmap), start_pfn, end_pfn);
-
- /* Free the lowmem regions from memblock into bootmem. */
- for_each_memblock(memory, reg) {
- unsigned long start = memblock_region_memory_base_pfn(reg);
- unsigned long end = memblock_region_memory_end_pfn(reg);
-
- if (end >= end_pfn)
- end = end_pfn;
- if (start >= end)
- break;
-
- free_bootmem(__pfn_to_phys(start), (end - start) << PAGE_SHIFT);
- }
-
- /* Reserve the lowmem memblock reserved regions in bootmem. */
- for_each_memblock(reserved, reg) {
- unsigned long start = memblock_region_reserved_base_pfn(reg);
- unsigned long end = memblock_region_reserved_end_pfn(reg);
-
- if (end >= end_pfn)
- end = end_pfn;
- if (start >= end)
- break;
-
- reserve_bootmem(__pfn_to_phys(start),
- (end - start) << PAGE_SHIFT, BOOTMEM_DEFAULT);
- }
-}
-
#ifdef CONFIG_ZONE_DMA
phys_addr_t arm_dma_zone_size __read_mostly;
@@ -233,7 +181,7 @@ void __init setup_dma_zone(const struct machine_desc *mdesc)
#endif
}
-static void __init arm_bootmem_free(unsigned long min, unsigned long max_low,
+static void __init zone_sizes_init(unsigned long min, unsigned long max_low,
unsigned long max_high)
{
unsigned long zone_size[MAX_NR_ZONES], zhole_size[MAX_NR_ZONES];
@@ -381,7 +329,6 @@ void __init arm_memblock_init(struct meminfo *mi,
dma_contiguous_reserve(min(arm_dma_limit, arm_lowmem_limit));
arm_memblock_steal_permitted = false;
- memblock_allow_resize();
memblock_dump_all();
}
@@ -389,12 +336,11 @@ void __init bootmem_init(void)
{
unsigned long min, max_low, max_high;
+ memblock_allow_resize();
max_low = max_high = 0;
find_limits(&min, &max_low, &max_high);
- arm_bootmem_init(min, max_low);
-
/*
* Sparsemem tries to allocate bootmem in memory_present(),
* so must be done after the fixed reservations
@@ -411,7 +357,7 @@ void __init bootmem_init(void)
* the sparse mem_map arrays initialized by sparse_init()
* for memmap_init_zone(), otherwise all PFNs are invalid.
*/
- arm_bootmem_free(min, max_low, max_high);
+ zone_sizes_init(min, max_low, max_high);
/*
* This doesn't seem to be used by the Linux memory manager any
@@ -584,7 +530,7 @@ void __init mem_init(void)
extern u32 itcm_end;
#endif
- max_mapnr = pfn_to_page(max_pfn + PHYS_PFN_OFFSET) - mem_map;
+ set_max_mapnr(pfn_to_page(max_pfn) - mem_map);
/* this will put all unused low memory onto the freelists */
free_unused_memmap(&meminfo);
diff --git a/arch/arm/mm/ioremap.c b/arch/arm/mm/ioremap.c
index f123d6eb074b..f9c32ba73544 100644
--- a/arch/arm/mm/ioremap.c
+++ b/arch/arm/mm/ioremap.c
@@ -392,9 +392,9 @@ __arm_ioremap_exec(phys_addr_t phys_addr, size_t size, bool cached)
unsigned int mtype;
if (cached)
- mtype = MT_MEMORY;
+ mtype = MT_MEMORY_RWX;
else
- mtype = MT_MEMORY_NONCACHED;
+ mtype = MT_MEMORY_RWX_NONCACHED;
return __arm_ioremap_caller(phys_addr, size, mtype,
__builtin_return_address(0));
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index 580ef2de82d7..4f08c133cc25 100644
--- a/arch/arm/mm/mmu.c
+++ b/arch/arm/mm/mmu.c
@@ -22,6 +22,7 @@
#include <asm/cputype.h>
#include <asm/sections.h>
#include <asm/cachetype.h>
+#include <asm/sections.h>
#include <asm/setup.h>
#include <asm/smp_plat.h>
#include <asm/tlb.h>
@@ -287,36 +288,43 @@ static struct mem_type mem_types[] = {
.prot_l1 = PMD_TYPE_TABLE,
.domain = DOMAIN_USER,
},
- [MT_MEMORY] = {
+ [MT_MEMORY_RWX] = {
.prot_pte = L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_DIRTY,
.prot_l1 = PMD_TYPE_TABLE,
.prot_sect = PMD_TYPE_SECT | PMD_SECT_AP_WRITE,
.domain = DOMAIN_KERNEL,
},
+ [MT_MEMORY_RW] = {
+ .prot_pte = L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_DIRTY |
+ L_PTE_XN,
+ .prot_l1 = PMD_TYPE_TABLE,
+ .prot_sect = PMD_TYPE_SECT | PMD_SECT_AP_WRITE,
+ .domain = DOMAIN_KERNEL,
+ },
[MT_ROM] = {
.prot_sect = PMD_TYPE_SECT,
.domain = DOMAIN_KERNEL,
},
- [MT_MEMORY_NONCACHED] = {
+ [MT_MEMORY_RWX_NONCACHED] = {
.prot_pte = L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_DIRTY |
L_PTE_MT_BUFFERABLE,
.prot_l1 = PMD_TYPE_TABLE,
.prot_sect = PMD_TYPE_SECT | PMD_SECT_AP_WRITE,
.domain = DOMAIN_KERNEL,
},
- [MT_MEMORY_DTCM] = {
+ [MT_MEMORY_RW_DTCM] = {
.prot_pte = L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_DIRTY |
L_PTE_XN,
.prot_l1 = PMD_TYPE_TABLE,
.prot_sect = PMD_TYPE_SECT | PMD_SECT_XN,
.domain = DOMAIN_KERNEL,
},
- [MT_MEMORY_ITCM] = {
+ [MT_MEMORY_RWX_ITCM] = {
.prot_pte = L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_DIRTY,
.prot_l1 = PMD_TYPE_TABLE,
.domain = DOMAIN_KERNEL,
},
- [MT_MEMORY_SO] = {
+ [MT_MEMORY_RW_SO] = {
.prot_pte = L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_DIRTY |
L_PTE_MT_UNCACHED | L_PTE_XN,
.prot_l1 = PMD_TYPE_TABLE,
@@ -325,7 +333,8 @@ static struct mem_type mem_types[] = {
.domain = DOMAIN_KERNEL,
},
[MT_MEMORY_DMA_READY] = {
- .prot_pte = L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_DIRTY,
+ .prot_pte = L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_DIRTY |
+ L_PTE_XN,
.prot_l1 = PMD_TYPE_TABLE,
.domain = DOMAIN_KERNEL,
},
@@ -337,6 +346,44 @@ const struct mem_type *get_mem_type(unsigned int type)
}
EXPORT_SYMBOL(get_mem_type);
+#define PTE_SET_FN(_name, pteop) \
+static int pte_set_##_name(pte_t *ptep, pgtable_t token, unsigned long addr, \
+ void *data) \
+{ \
+ pte_t pte = pteop(*ptep); \
+\
+ set_pte_ext(ptep, pte, 0); \
+ return 0; \
+} \
+
+#define SET_MEMORY_FN(_name, callback) \
+int set_memory_##_name(unsigned long addr, int numpages) \
+{ \
+ unsigned long start = addr; \
+ unsigned long size = PAGE_SIZE*numpages; \
+ unsigned end = start + size; \
+\
+ if (start < MODULES_VADDR || start >= MODULES_END) \
+ return -EINVAL;\
+\
+ if (end < MODULES_VADDR || end >= MODULES_END) \
+ return -EINVAL; \
+\
+ apply_to_page_range(&init_mm, start, size, callback, NULL); \
+ flush_tlb_kernel_range(start, end); \
+ return 0;\
+}
+
+PTE_SET_FN(ro, pte_wrprotect)
+PTE_SET_FN(rw, pte_mkwrite)
+PTE_SET_FN(x, pte_mkexec)
+PTE_SET_FN(nx, pte_mknexec)
+
+SET_MEMORY_FN(ro, pte_set_ro)
+SET_MEMORY_FN(rw, pte_set_rw)
+SET_MEMORY_FN(x, pte_set_x)
+SET_MEMORY_FN(nx, pte_set_nx)
+
/*
* Adjust the PMD section entries according to the CPU in use.
*/
@@ -410,6 +457,9 @@ static void __init build_mem_type_table(void)
mem_types[MT_DEVICE_NONSHARED].prot_sect |= PMD_SECT_XN;
mem_types[MT_DEVICE_CACHED].prot_sect |= PMD_SECT_XN;
mem_types[MT_DEVICE_WC].prot_sect |= PMD_SECT_XN;
+
+ /* Also setup NX memory mapping */
+ mem_types[MT_MEMORY_RW].prot_sect |= PMD_SECT_XN;
}
if (cpu_arch >= CPU_ARCH_ARMv7 && (cr & CR_TRE)) {
/*
@@ -487,11 +537,13 @@ static void __init build_mem_type_table(void)
mem_types[MT_DEVICE_WC].prot_pte |= L_PTE_SHARED;
mem_types[MT_DEVICE_CACHED].prot_sect |= PMD_SECT_S;
mem_types[MT_DEVICE_CACHED].prot_pte |= L_PTE_SHARED;
- mem_types[MT_MEMORY].prot_sect |= PMD_SECT_S;
- mem_types[MT_MEMORY].prot_pte |= L_PTE_SHARED;
+ mem_types[MT_MEMORY_RWX].prot_sect |= PMD_SECT_S;
+ mem_types[MT_MEMORY_RWX].prot_pte |= L_PTE_SHARED;
+ mem_types[MT_MEMORY_RW].prot_sect |= PMD_SECT_S;
+ mem_types[MT_MEMORY_RW].prot_pte |= L_PTE_SHARED;
mem_types[MT_MEMORY_DMA_READY].prot_pte |= L_PTE_SHARED;
- mem_types[MT_MEMORY_NONCACHED].prot_sect |= PMD_SECT_S;
- mem_types[MT_MEMORY_NONCACHED].prot_pte |= L_PTE_SHARED;
+ mem_types[MT_MEMORY_RWX_NONCACHED].prot_sect |= PMD_SECT_S;
+ mem_types[MT_MEMORY_RWX_NONCACHED].prot_pte |= L_PTE_SHARED;
}
}
@@ -502,15 +554,15 @@ static void __init build_mem_type_table(void)
if (cpu_arch >= CPU_ARCH_ARMv6) {
if (cpu_arch >= CPU_ARCH_ARMv7 && (cr & CR_TRE)) {
/* Non-cacheable Normal is XCB = 001 */
- mem_types[MT_MEMORY_NONCACHED].prot_sect |=
+ mem_types[MT_MEMORY_RWX_NONCACHED].prot_sect |=
PMD_SECT_BUFFERED;
} else {
/* For both ARMv6 and non-TEX-remapping ARMv7 */
- mem_types[MT_MEMORY_NONCACHED].prot_sect |=
+ mem_types[MT_MEMORY_RWX_NONCACHED].prot_sect |=
PMD_SECT_TEX(1);
}
} else {
- mem_types[MT_MEMORY_NONCACHED].prot_sect |= PMD_SECT_BUFFERABLE;
+ mem_types[MT_MEMORY_RWX_NONCACHED].prot_sect |= PMD_SECT_BUFFERABLE;
}
#ifdef CONFIG_ARM_LPAE
@@ -543,10 +595,12 @@ static void __init build_mem_type_table(void)
mem_types[MT_LOW_VECTORS].prot_l1 |= ecc_mask;
mem_types[MT_HIGH_VECTORS].prot_l1 |= ecc_mask;
- mem_types[MT_MEMORY].prot_sect |= ecc_mask | cp->pmd;
- mem_types[MT_MEMORY].prot_pte |= kern_pgprot;
+ mem_types[MT_MEMORY_RWX].prot_sect |= ecc_mask | cp->pmd;
+ mem_types[MT_MEMORY_RWX].prot_pte |= kern_pgprot;
+ mem_types[MT_MEMORY_RW].prot_sect |= ecc_mask | cp->pmd;
+ mem_types[MT_MEMORY_RW].prot_pte |= kern_pgprot;
mem_types[MT_MEMORY_DMA_READY].prot_pte |= kern_pgprot;
- mem_types[MT_MEMORY_NONCACHED].prot_sect |= ecc_mask;
+ mem_types[MT_MEMORY_RWX_NONCACHED].prot_sect |= ecc_mask;
mem_types[MT_ROM].prot_sect |= cp->pmd;
switch (cp->pmd) {
@@ -1296,6 +1350,8 @@ static void __init kmap_init(void)
static void __init map_lowmem(void)
{
struct memblock_region *reg;
+ unsigned long kernel_x_start = round_down(__pa(_stext), SECTION_SIZE);
+ unsigned long kernel_x_end = round_up(__pa(__init_end), SECTION_SIZE);
/* Map all the lowmem memory banks. */
for_each_memblock(memory, reg) {
@@ -1308,12 +1364,40 @@ static void __init map_lowmem(void)
if (start >= end)
break;
- map.pfn = __phys_to_pfn(start);
- map.virtual = __phys_to_virt(start);
- map.length = end - start;
- map.type = MT_MEMORY;
+ if (end < kernel_x_start || start >= kernel_x_end) {
+ map.pfn = __phys_to_pfn(start);
+ map.virtual = __phys_to_virt(start);
+ map.length = end - start;
+ map.type = MT_MEMORY_RWX;
- create_mapping(&map);
+ create_mapping(&map);
+ } else {
+ /* This better cover the entire kernel */
+ if (start < kernel_x_start) {
+ map.pfn = __phys_to_pfn(start);
+ map.virtual = __phys_to_virt(start);
+ map.length = kernel_x_start - start;
+ map.type = MT_MEMORY_RW;
+
+ create_mapping(&map);
+ }
+
+ map.pfn = __phys_to_pfn(kernel_x_start);
+ map.virtual = __phys_to_virt(kernel_x_start);
+ map.length = kernel_x_end - kernel_x_start;
+ map.type = MT_MEMORY_RWX;
+
+ create_mapping(&map);
+
+ if (kernel_x_end < end) {
+ map.pfn = __phys_to_pfn(kernel_x_end);
+ map.virtual = __phys_to_virt(kernel_x_end);
+ map.length = end - kernel_x_end;
+ map.type = MT_MEMORY_RW;
+
+ create_mapping(&map);
+ }
+ }
}
}
diff --git a/arch/arm/mm/pgd.c b/arch/arm/mm/pgd.c
index 1046b373d1ae..249379535be2 100644
--- a/arch/arm/mm/pgd.c
+++ b/arch/arm/mm/pgd.c
@@ -23,7 +23,7 @@
#define __pgd_alloc() kmalloc(PTRS_PER_PGD * sizeof(pgd_t), GFP_KERNEL)
#define __pgd_free(pgd) kfree(pgd)
#else
-#define __pgd_alloc() (pgd_t *)__get_free_pages(GFP_KERNEL, 2)
+#define __pgd_alloc() (pgd_t *)__get_free_pages(GFP_KERNEL | __GFP_REPEAT, 2)
#define __pgd_free(pgd) free_pages((unsigned long)pgd, 2)
#endif