diff options
| author | Magnus Damm <damm@opensource.se> | 2013-07-02 11:28:30 +0200 |
|---|---|---|
| committer | Simon Horman <horms+renesas@verge.net.au> | 2013-07-17 07:26:55 +0200 |
| commit | 8d7217e5d74966e1016dad1f48fdaebb85deb685 (patch) | |
| tree | 332d1b74155f53786739101573083bf898069bf0 /arch/arm/mach-shmobile/smp-emev2.c | |
| parent | ARM: shmobile: Make r8a73a4 Arch timer optional (diff) | |
| download | linux-8d7217e5d74966e1016dad1f48fdaebb85deb685.tar.xz linux-8d7217e5d74966e1016dad1f48fdaebb85deb685.zip | |
ARM: shmobile: Disconnect EMEV2 SMP code from clocks
Update the EMEV2 SMP code to access the SMU directly
instead of relying on help from the legacy clock code.
This change moves us one step closer to common clocks.
Signed-off-by: Magnus Damm <damm@opensource.se>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Diffstat (limited to 'arch/arm/mach-shmobile/smp-emev2.c')
| -rw-r--r-- | arch/arm/mach-shmobile/smp-emev2.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/arch/arm/mach-shmobile/smp-emev2.c b/arch/arm/mach-shmobile/smp-emev2.c index 97871655b716..1bf8bc7e8ed8 100644 --- a/arch/arm/mach-shmobile/smp-emev2.c +++ b/arch/arm/mach-shmobile/smp-emev2.c @@ -29,6 +29,8 @@ #include <asm/smp_scu.h> #define EMEV2_SCU_BASE 0x1e000000 +#define EMEV2_SMU_BASE 0xe0110000 +#define SMU_GENERAL_REG0 0x7c0 static int __cpuinit emev2_boot_secondary(unsigned int cpu, struct task_struct *idle) { @@ -38,13 +40,18 @@ static int __cpuinit emev2_boot_secondary(unsigned int cpu, struct task_struct * static void __init emev2_smp_prepare_cpus(unsigned int max_cpus) { + void __iomem *smu; + /* setup EMEV2 specific SCU base, enable */ shmobile_scu_base = ioremap(EMEV2_SCU_BASE, PAGE_SIZE); scu_enable(shmobile_scu_base); /* Tell ROM loader about our vector (in headsmp-scu.S, headsmp.S) */ - emev2_clock_init(); /* need ioremapped SMU */ - emev2_set_boot_vector(__pa(shmobile_boot_vector)); + smu = ioremap(EMEV2_SMU_BASE, PAGE_SIZE); + if (smu) { + iowrite32(__pa(shmobile_boot_vector), smu + SMU_GENERAL_REG0); + iounmap(smu); + } shmobile_boot_fn = virt_to_phys(shmobile_boot_scu); shmobile_boot_arg = (unsigned long)shmobile_scu_base; |