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authorArnd Bergmann <arnd@arndb.de>2016-06-21 00:21:20 +0300
committerLinus Walleij <linus.walleij@linaro.org>2016-07-12 12:24:08 +0300
commitf15601d62bf1348c1dc9fe3455b277a652db1c6e (patch)
tree8d4a25cce6964b31a9138bf15dc187aa38328aa0 /arch/arm/mach-ux500
parentcd1dc431d02afda521bed53b7c87a678a3ac246f (diff)
downloadlinux-f15601d62bf1348c1dc9fe3455b277a652db1c6e.tar.xz
ARM: ux500: call ux500_setup_id later
ux500_setup_id is currently called from u8500_map_io(), which is really early, but nothing relies on the ID any more, other than a printk message that is not really all that important to have early during boot. If we move the call to ux500_setup_id() into ux500_soc_device_init(), that file becomes usuable almost entirely standalone, and we can kill off the u8500_map_io() callback as it just does the default debug_ll_io_init() now. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'arch/arm/mach-ux500')
-rw-r--r--arch/arm/mach-ux500/cpu-db8500.c8
-rw-r--r--arch/arm/mach-ux500/id.c23
2 files changed, 10 insertions, 21 deletions
diff --git a/arch/arm/mach-ux500/cpu-db8500.c b/arch/arm/mach-ux500/cpu-db8500.c
index e7eba473d3bd..881cafbc4d97 100644
--- a/arch/arm/mach-ux500/cpu-db8500.c
+++ b/arch/arm/mach-ux500/cpu-db8500.c
@@ -27,13 +27,6 @@
#include "board-mop500.h"
#include "db8500-regs.h"
-#include "id.h"
-
-static void __init u8500_map_io(void)
-{
- debug_ll_io_init();
- ux500_setup_id();
-}
/*
* The PMU IRQ lines of two cores are wired together into a single interrupt.
@@ -117,7 +110,6 @@ static const char * stericsson_dt_platform_compat[] = {
DT_MACHINE_START(U8500_DT, "ST-Ericsson Ux5x0 platform (Device Tree Support)")
.l2c_aux_val = 0,
.l2c_aux_mask = ~0,
- .map_io = u8500_map_io,
.init_irq = ux500_init_irq,
.init_machine = u8500_init_machine,
.dt_compat = stericsson_dt_platform_compat,
diff --git a/arch/arm/mach-ux500/id.c b/arch/arm/mach-ux500/id.c
index 17f80ef44c58..983004d0fef2 100644
--- a/arch/arm/mach-ux500/id.c
+++ b/arch/arm/mach-ux500/id.c
@@ -37,21 +37,16 @@ static struct dbx500_asic_id dbx500_id;
static unsigned int __init ux500_read_asicid(phys_addr_t addr)
{
- phys_addr_t base = addr & ~0xfff;
- struct map_desc desc = {
- .virtual = (unsigned long)UX500_VIRT_ROM,
- .pfn = __phys_to_pfn(base),
- .length = SZ_16K,
- .type = MT_DEVICE,
- };
+ void __iomem *virt = ioremap(addr, 4);
+ unsigned int asicid;
- iotable_init(&desc, 1);
+ if (!virt)
+ return 0;
- /* As in devicemaps_init() */
- local_flush_tlb_all();
- flush_cache_all();
+ asicid = readl(virt);
+ iounmap(virt);
- return readl(UX500_VIRT_ROM + (addr & 0xfff));
+ return asicid;
}
static void ux500_print_soc_info(unsigned int asicid)
@@ -86,7 +81,7 @@ static unsigned int partnumber(unsigned int asicid)
* DB9540 0x413fc090 0xFFFFDBF4 0x009540xx
*/
-void __init ux500_setup_id(void)
+static void __init ux500_setup_id(void)
{
unsigned int cpuid = read_cpuid_id();
unsigned int asicid = 0;
@@ -197,6 +192,8 @@ struct device * __init ux500_soc_device_init(void)
struct soc_device *soc_dev;
struct soc_device_attribute *soc_dev_attr;
+ ux500_setup_id();
+
soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL);
if (!soc_dev_attr)
return ERR_PTR(-ENOMEM);