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Diffstat (limited to 'arch/arm/mach-exynos/common.c')
-rw-r--r--arch/arm/mach-exynos/common.c60
1 files changed, 47 insertions, 13 deletions
diff --git a/arch/arm/mach-exynos/common.c b/arch/arm/mach-exynos/common.c
index f494db872c67..97ca2592ce83 100644
--- a/arch/arm/mach-exynos/common.c
+++ b/arch/arm/mach-exynos/common.c
@@ -26,10 +26,12 @@
#include <asm/hardware/gic.h>
#include <asm/mach/map.h>
#include <asm/mach/irq.h>
+#include <asm/cacheflush.h>
#include <mach/regs-irq.h>
#include <mach/regs-pmu.h>
#include <mach/regs-gpio.h>
+#include <mach/pmu.h>
#include <plat/cpu.h>
#include <plat/clock.h>
@@ -45,6 +47,8 @@
#include <plat/regs-serial.h>
#include "common.h"
+#define L2_AUX_VAL 0x7C470001
+#define L2_AUX_MASK 0xC200ffff
static const char name_exynos4210[] = "EXYNOS4210";
static const char name_exynos4212[] = "EXYNOS4212";
@@ -173,7 +177,12 @@ static struct map_desc exynos4_iodesc[] __initdata = {
}, {
.virtual = (unsigned long)S5P_VA_DMC0,
.pfn = __phys_to_pfn(EXYNOS4_PA_DMC0),
- .length = SZ_4K,
+ .length = SZ_64K,
+ .type = MT_DEVICE,
+ }, {
+ .virtual = (unsigned long)S5P_VA_DMC1,
+ .pfn = __phys_to_pfn(EXYNOS4_PA_DMC1),
+ .length = SZ_64K,
.type = MT_DEVICE,
}, {
.virtual = (unsigned long)S3C_VA_USB_HSPHY,
@@ -433,23 +442,48 @@ core_initcall(exynos4_core_init);
#ifdef CONFIG_CACHE_L2X0
static int __init exynos4_l2x0_cache_init(void)
{
- /* TAG, Data Latency Control: 2cycle */
- __raw_writel(0x110, S5P_VA_L2CC + L2X0_TAG_LATENCY_CTRL);
+ int ret;
+ ret = l2x0_of_init(L2_AUX_VAL, L2_AUX_MASK);
+ if (!ret) {
+ l2x0_regs_phys = virt_to_phys(&l2x0_saved_regs);
+ clean_dcache_area(&l2x0_regs_phys, sizeof(unsigned long));
+ return 0;
+ }
- if (soc_is_exynos4210())
- __raw_writel(0x110, S5P_VA_L2CC + L2X0_DATA_LATENCY_CTRL);
- else if (soc_is_exynos4212() || soc_is_exynos4412())
- __raw_writel(0x120, S5P_VA_L2CC + L2X0_DATA_LATENCY_CTRL);
+ if (!(__raw_readl(S5P_VA_L2CC + L2X0_CTRL) & 0x1)) {
+ l2x0_saved_regs.phy_base = EXYNOS4_PA_L2CC;
+ /* TAG, Data Latency Control: 2 cycles */
+ l2x0_saved_regs.tag_latency = 0x110;
+
+ if (soc_is_exynos4212() || soc_is_exynos4412())
+ l2x0_saved_regs.data_latency = 0x120;
+ else
+ l2x0_saved_regs.data_latency = 0x110;
+
+ l2x0_saved_regs.prefetch_ctrl = 0x30000007;
+ l2x0_saved_regs.pwr_ctrl =
+ (L2X0_DYNAMIC_CLK_GATING_EN | L2X0_STNDBY_MODE_EN);
- /* L2X0 Prefetch Control */
- __raw_writel(0x30000007, S5P_VA_L2CC + L2X0_PREFETCH_CTRL);
+ l2x0_regs_phys = virt_to_phys(&l2x0_saved_regs);
- /* L2X0 Power Control */
- __raw_writel(L2X0_DYNAMIC_CLK_GATING_EN | L2X0_STNDBY_MODE_EN,
- S5P_VA_L2CC + L2X0_POWER_CTRL);
+ __raw_writel(l2x0_saved_regs.tag_latency,
+ S5P_VA_L2CC + L2X0_TAG_LATENCY_CTRL);
+ __raw_writel(l2x0_saved_regs.data_latency,
+ S5P_VA_L2CC + L2X0_DATA_LATENCY_CTRL);
- l2x0_init(S5P_VA_L2CC, 0x7C470001, 0xC200ffff);
+ /* L2X0 Prefetch Control */
+ __raw_writel(l2x0_saved_regs.prefetch_ctrl,
+ S5P_VA_L2CC + L2X0_PREFETCH_CTRL);
+
+ /* L2X0 Power Control */
+ __raw_writel(l2x0_saved_regs.pwr_ctrl,
+ S5P_VA_L2CC + L2X0_POWER_CTRL);
+
+ clean_dcache_area(&l2x0_regs_phys, sizeof(unsigned long));
+ clean_dcache_area(&l2x0_saved_regs, sizeof(struct l2x0_regs));
+ }
+ l2x0_init(S5P_VA_L2CC, L2_AUX_VAL, L2_AUX_MASK);
return 0;
}