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| author | Zhiwu Song <Zhiwu.Song@csr.com> | 2014-12-25 16:34:20 +0800 |
|---|---|---|
| committer | Barry Song <Baohua.Song@csr.com> | 2015-01-20 19:56:48 +0800 |
| commit | a7ae982f36389f0b83536d1c5d8f3437bd604d5d (patch) | |
| tree | acaa81e42f2417bead95738b435d099b25ae7bb4 /arch/arm/mach-prima2 | |
| parent | 3c7d21b4b8553aa85d824d77db6e309e496399b3 (diff) | |
| download | linux-0-day-a7ae982f36389f0b83536d1c5d8f3437bd604d5d.tar.gz linux-0-day-a7ae982f36389f0b83536d1c5d8f3437bd604d5d.tar.xz | |
ARM: sirf: move platsmp to support Atlas7 SoC
This patch breaks Marco SMP support, but Marco project has been dropped.
So it corrects cpu1 jump/flag address for Atlas7 and removes scu related
logic as scu doesn't expose in cortex-a7.
Signed-off-by: Zhiwu Song <Zhiwu.Song@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/arm/mach-prima2')
| -rw-r--r-- | arch/arm/mach-prima2/common.c | 1 | ||||
| -rw-r--r-- | arch/arm/mach-prima2/platsmp.c | 52 |
2 files changed, 13 insertions, 40 deletions
diff --git a/arch/arm/mach-prima2/common.c b/arch/arm/mach-prima2/common.c index bc53cc45fd675..a20b8d4db9edb 100644 --- a/arch/arm/mach-prima2/common.c +++ b/arch/arm/mach-prima2/common.c @@ -23,7 +23,6 @@ static void __init sirfsoc_init_late(void) static __init void sirfsoc_map_io(void) { sirfsoc_map_lluart(); - sirfsoc_map_scu(); } #ifdef CONFIG_ARCH_ATLAS6 diff --git a/arch/arm/mach-prima2/platsmp.c b/arch/arm/mach-prima2/platsmp.c index 335c12e922621..fc2b03c81e5f5 100644 --- a/arch/arm/mach-prima2/platsmp.c +++ b/arch/arm/mach-prima2/platsmp.c @@ -20,30 +20,10 @@ #include "common.h" -static void __iomem *scu_base; -static void __iomem *rsc_base; +static void __iomem *clk_base; static DEFINE_SPINLOCK(boot_lock); -static struct map_desc scu_io_desc __initdata = { - .length = SZ_4K, - .type = MT_DEVICE, -}; - -void __init sirfsoc_map_scu(void) -{ - unsigned long base; - - /* Get SCU base */ - asm("mrc p15, 4, %0, c15, c0, 0" : "=r" (base)); - - scu_io_desc.virtual = SIRFSOC_VA(base); - scu_io_desc.pfn = __phys_to_pfn(base); - iotable_init(&scu_io_desc, 1); - - scu_base = (void __iomem *)SIRFSOC_VA(base); -} - static void sirfsoc_secondary_init(unsigned int cpu) { /* @@ -60,8 +40,8 @@ static void sirfsoc_secondary_init(unsigned int cpu) spin_unlock(&boot_lock); } -static struct of_device_id rsc_ids[] = { - { .compatible = "sirf,marco-rsc" }, +static struct of_device_id clk_ids[] = { + { .compatible = "sirf,atlas7-clkc" }, {}, }; @@ -70,27 +50,27 @@ static int sirfsoc_boot_secondary(unsigned int cpu, struct task_struct *idle) unsigned long timeout; struct device_node *np; - np = of_find_matching_node(NULL, rsc_ids); + np = of_find_matching_node(NULL, clk_ids); if (!np) return -ENODEV; - rsc_base = of_iomap(np, 0); - if (!rsc_base) + clk_base = of_iomap(np, 0); + if (!clk_base) return -ENOMEM; /* - * write the address of secondary startup into the sram register - * at offset 0x2C, then write the magic number 0x3CAF5D62 to the - * RSC register at offset 0x28, which is what boot rom code is + * write the address of secondary startup into the clkc register + * at offset 0x2bC, then write the magic number 0x3CAF5D62 to the + * clkc register at offset 0x2b8, which is what boot rom code is * waiting for. This would wake up the secondary core from WFE */ -#define SIRFSOC_CPU1_JUMPADDR_OFFSET 0x2C +#define SIRFSOC_CPU1_JUMPADDR_OFFSET 0x2bc __raw_writel(virt_to_phys(sirfsoc_secondary_startup), - rsc_base + SIRFSOC_CPU1_JUMPADDR_OFFSET); + clk_base + SIRFSOC_CPU1_JUMPADDR_OFFSET); -#define SIRFSOC_CPU1_WAKEMAGIC_OFFSET 0x28 +#define SIRFSOC_CPU1_WAKEMAGIC_OFFSET 0x2b8 __raw_writel(0x3CAF5D62, - rsc_base + SIRFSOC_CPU1_WAKEMAGIC_OFFSET); + clk_base + SIRFSOC_CPU1_WAKEMAGIC_OFFSET); /* make sure write buffer is drained */ mb(); @@ -132,13 +112,7 @@ static int sirfsoc_boot_secondary(unsigned int cpu, struct task_struct *idle) return pen_release != -1 ? -ENOSYS : 0; } -static void __init sirfsoc_smp_prepare_cpus(unsigned int max_cpus) -{ - scu_enable(scu_base); -} - struct smp_operations sirfsoc_smp_ops __initdata = { - .smp_prepare_cpus = sirfsoc_smp_prepare_cpus, .smp_secondary_init = sirfsoc_secondary_init, .smp_boot_secondary = sirfsoc_boot_secondary, #ifdef CONFIG_HOTPLUG_CPU |