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authorLinus Walleij <linus.walleij@linaro.org>2015-05-14 09:20:23 +0200
committerLinus Walleij <linus.walleij@linaro.org>2015-05-18 15:06:12 +0200
commit2d6dd1711346d1708eacdbb1b5e8a5a573562fd1 (patch)
tree9bbc77616bdafc3432f61b3f6eeaf11b305ac5f4
parentARM: ux500: delete UART static map (diff)
downloadlinux-2d6dd1711346d1708eacdbb1b5e8a5a573562fd1.tar.xz
linux-2d6dd1711346d1708eacdbb1b5e8a5a573562fd1.zip
ARM: ux500: remove static maps from platsmp
This removes the reliance on static maps for SCU and backupram for the SMP startup of the Ux500 SoC. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
-rw-r--r--arch/arm/mach-ux500/platsmp.c28
1 files changed, 7 insertions, 21 deletions
diff --git a/arch/arm/mach-ux500/platsmp.c b/arch/arm/mach-ux500/platsmp.c
index a44967f3168c..1e13d0a8ad77 100644
--- a/arch/arm/mach-ux500/platsmp.c
+++ b/arch/arm/mach-ux500/platsmp.c
@@ -26,6 +26,9 @@
#include "db8500-regs.h"
#include "id.h"
+static void __iomem *scu_base;
+static void __iomem *backupram;
+
/* This is called from headsmp.S to wakeup the secondary core */
extern void u8500_secondary_startup(void);
@@ -41,16 +44,6 @@ static void write_pen_release(int val)
sync_cache_w(&pen_release);
}
-static void __iomem *scu_base_addr(void)
-{
- if (cpu_is_u8500_family() || cpu_is_ux540_family())
- return __io_address(U8500_SCU_BASE);
- else
- ux500_unknown_soc();
-
- return NULL;
-}
-
static DEFINE_SPINLOCK(boot_lock);
static void ux500_secondary_init(unsigned int cpu)
@@ -104,13 +97,6 @@ static int ux500_boot_secondary(unsigned int cpu, struct task_struct *idle)
static void __init wakeup_secondary(void)
{
- void __iomem *backupram;
-
- if (cpu_is_u8500_family() || cpu_is_ux540_family())
- backupram = __io_address(U8500_BACKUPRAM0_BASE);
- else
- ux500_unknown_soc();
-
/*
* write the address of secondary startup into the backup ram register
* at offset 0x1FF4, then write the magic number 0xA1FEED01 to the
@@ -135,10 +121,11 @@ static void __init wakeup_secondary(void)
*/
static void __init ux500_smp_init_cpus(void)
{
- void __iomem *scu_base = scu_base_addr();
unsigned int i, ncores;
- ncores = scu_base ? scu_get_core_count(scu_base) : 1;
+ scu_base = ioremap(U8500_SCU_BASE, 0x100);
+ backupram = ioremap(U8500_BACKUPRAM0_BASE, SZ_8K);
+ ncores = scu_get_core_count(scu_base);
/* sanity check */
if (ncores > nr_cpu_ids) {
@@ -153,8 +140,7 @@ static void __init ux500_smp_init_cpus(void)
static void __init ux500_smp_prepare_cpus(unsigned int max_cpus)
{
-
- scu_enable(scu_base_addr());
+ scu_enable(scu_base);
wakeup_secondary();
}