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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>
This commit is contained in:
Linus Walleij 2015-05-14 09:20:23 +02:00
parent 951b833ee8
commit 2d6dd17113
1 changed files with 7 additions and 21 deletions
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28
arch/arm/mach-ux500/platsmp.c
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@ -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();
}