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authorZhiwu Song <Zhiwu.Song@csr.com>2014-12-25 11:34:20 +0300
committerBarry Song <Baohua.Song@csr.com>2015-01-20 14:56:48 +0300
commita7ae982f36389f0b83536d1c5d8f3437bd604d5d (patch)
treeacaa81e42f2417bead95738b435d099b25ae7bb4 /arch/arm/mach-prima2
parent3c7d21b4b8553aa85d824d77db6e309e496399b3 (diff)
downloadlinux-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.c1
-rw-r--r--arch/arm/mach-prima2/platsmp.c52
2 files changed, 13 insertions, 40 deletions
diff --git a/arch/arm/mach-prima2/common.c b/arch/arm/mach-prima2/common.c
index bc53cc45fd67..a20b8d4db9ed 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 335c12e92262..fc2b03c81e5f 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