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-rw-r--r--arch/powerpc/kernel/cpu_setup_6xx.S20
-rw-r--r--arch/powerpc/kernel/cpu_specs_e500mc.h3
-rw-r--r--arch/powerpc/kernel/interrupt_64.S4
-rw-r--r--arch/powerpc/kernel/iommu.c4
-rw-r--r--arch/powerpc/kernel/trace/ftrace.c12
-rw-r--r--arch/powerpc/kernel/trace/ftrace_64_pg.c5
-rw-r--r--arch/powerpc/kernel/vmlinux.lds.S2
7 files changed, 45 insertions, 5 deletions
diff --git a/arch/powerpc/kernel/cpu_setup_6xx.S b/arch/powerpc/kernel/cpu_setup_6xx.S
index f29ce3dd6140..bfd3f442e5eb 100644
--- a/arch/powerpc/kernel/cpu_setup_6xx.S
+++ b/arch/powerpc/kernel/cpu_setup_6xx.S
@@ -26,6 +26,15 @@ BEGIN_FTR_SECTION
bl __init_fpu_registers
END_FTR_SECTION_IFCLR(CPU_FTR_FPU_UNAVAILABLE)
bl setup_common_caches
+
+ /*
+ * This assumes that all cores using __setup_cpu_603 with
+ * MMU_FTR_USE_HIGH_BATS are G2_LE compatible
+ */
+BEGIN_MMU_FTR_SECTION
+ bl setup_g2_le_hid2
+END_MMU_FTR_SECTION_IFSET(MMU_FTR_USE_HIGH_BATS)
+
mtlr r5
blr
_GLOBAL(__setup_cpu_604)
@@ -115,6 +124,16 @@ SYM_FUNC_START_LOCAL(setup_604_hid0)
blr
SYM_FUNC_END(setup_604_hid0)
+/* Enable high BATs for G2_LE and derivatives like e300cX */
+SYM_FUNC_START_LOCAL(setup_g2_le_hid2)
+ mfspr r11,SPRN_HID2_G2_LE
+ oris r11,r11,HID2_G2_LE_HBE@h
+ mtspr SPRN_HID2_G2_LE,r11
+ sync
+ isync
+ blr
+SYM_FUNC_END(setup_g2_le_hid2)
+
/* 7400 <= rev 2.7 and 7410 rev = 1.0 suffer from some
* erratas we work around here.
* Moto MPC710CE.pdf describes them, those are errata
@@ -495,4 +514,3 @@ _GLOBAL(__restore_cpu_setup)
mtcr r7
blr
_ASM_NOKPROBE_SYMBOL(__restore_cpu_setup)
-
diff --git a/arch/powerpc/kernel/cpu_specs_e500mc.h b/arch/powerpc/kernel/cpu_specs_e500mc.h
index ceb06b109f83..2ae8e9a7b461 100644
--- a/arch/powerpc/kernel/cpu_specs_e500mc.h
+++ b/arch/powerpc/kernel/cpu_specs_e500mc.h
@@ -8,7 +8,8 @@
#ifdef CONFIG_PPC64
#define COMMON_USER_BOOKE (PPC_FEATURE_32 | PPC_FEATURE_HAS_MMU | \
- PPC_FEATURE_HAS_FPU | PPC_FEATURE_64)
+ PPC_FEATURE_HAS_FPU | PPC_FEATURE_64 | \
+ PPC_FEATURE_BOOKE)
#else
#define COMMON_USER_BOOKE (PPC_FEATURE_32 | PPC_FEATURE_HAS_MMU | \
PPC_FEATURE_BOOKE)
diff --git a/arch/powerpc/kernel/interrupt_64.S b/arch/powerpc/kernel/interrupt_64.S
index bd863702d812..1ad059a9e2fe 100644
--- a/arch/powerpc/kernel/interrupt_64.S
+++ b/arch/powerpc/kernel/interrupt_64.S
@@ -52,7 +52,8 @@ _ASM_NOKPROBE_SYMBOL(system_call_vectored_\name)
mr r10,r1
ld r1,PACAKSAVE(r13)
std r10,0(r1)
- std r11,_NIP(r1)
+ std r11,_LINK(r1)
+ std r11,_NIP(r1) /* Saved LR is also the next instruction */
std r12,_MSR(r1)
std r0,GPR0(r1)
std r10,GPR1(r1)
@@ -70,7 +71,6 @@ _ASM_NOKPROBE_SYMBOL(system_call_vectored_\name)
std r9,GPR13(r1)
SAVE_NVGPRS(r1)
std r11,_XER(r1)
- std r11,_LINK(r1)
std r11,_CTR(r1)
li r11,\trapnr
diff --git a/arch/powerpc/kernel/iommu.c b/arch/powerpc/kernel/iommu.c
index d71eac3b2887..a9bebfd56b3b 100644
--- a/arch/powerpc/kernel/iommu.c
+++ b/arch/powerpc/kernel/iommu.c
@@ -1289,8 +1289,10 @@ spapr_tce_platform_iommu_attach_dev(struct iommu_domain *platform_domain,
struct iommu_table_group *table_group;
/* At first attach the ownership is already set */
- if (!domain)
+ if (!domain) {
+ iommu_group_put(grp);
return 0;
+ }
table_group = iommu_group_get_iommudata(grp);
/*
diff --git a/arch/powerpc/kernel/trace/ftrace.c b/arch/powerpc/kernel/trace/ftrace.c
index 82010629cf88..d8d6b4fd9a14 100644
--- a/arch/powerpc/kernel/trace/ftrace.c
+++ b/arch/powerpc/kernel/trace/ftrace.c
@@ -27,10 +27,22 @@
#include <asm/ftrace.h>
#include <asm/syscall.h>
#include <asm/inst.h>
+#include <asm/sections.h>
#define NUM_FTRACE_TRAMPS 2
static unsigned long ftrace_tramps[NUM_FTRACE_TRAMPS];
+unsigned long ftrace_call_adjust(unsigned long addr)
+{
+ if (addr >= (unsigned long)__exittext_begin && addr < (unsigned long)__exittext_end)
+ return 0;
+
+ if (IS_ENABLED(CONFIG_ARCH_USING_PATCHABLE_FUNCTION_ENTRY))
+ addr += MCOUNT_INSN_SIZE;
+
+ return addr;
+}
+
static ppc_inst_t ftrace_create_branch_inst(unsigned long ip, unsigned long addr, int link)
{
ppc_inst_t op;
diff --git a/arch/powerpc/kernel/trace/ftrace_64_pg.c b/arch/powerpc/kernel/trace/ftrace_64_pg.c
index 7b85c3b460a3..12fab1803bcf 100644
--- a/arch/powerpc/kernel/trace/ftrace_64_pg.c
+++ b/arch/powerpc/kernel/trace/ftrace_64_pg.c
@@ -37,6 +37,11 @@
#define NUM_FTRACE_TRAMPS 8
static unsigned long ftrace_tramps[NUM_FTRACE_TRAMPS];
+unsigned long ftrace_call_adjust(unsigned long addr)
+{
+ return addr;
+}
+
static ppc_inst_t
ftrace_call_replace(unsigned long ip, unsigned long addr, int link)
{
diff --git a/arch/powerpc/kernel/vmlinux.lds.S b/arch/powerpc/kernel/vmlinux.lds.S
index 1c5970df3233..f420df7888a7 100644
--- a/arch/powerpc/kernel/vmlinux.lds.S
+++ b/arch/powerpc/kernel/vmlinux.lds.S
@@ -281,7 +281,9 @@ SECTIONS
* to deal with references from __bug_table
*/
.exit.text : AT(ADDR(.exit.text) - LOAD_OFFSET) {
+ __exittext_begin = .;
EXIT_TEXT
+ __exittext_end = .;
}
. = ALIGN(PAGE_SIZE);