[PATCH V6 08/10] ST SPEAr13xx: add L2 cache support
Viresh Kumar
viresh.kumar at st.com
Tue Mar 1 06:27:08 EST 2011
From: Shiraz Hashim <shiraz.hashim at st.com>
Reviewed-by: Stanley Miao <stanley.miao at windriver.com>
Signed-off-by: shiraz hashim <shiraz.hashim at st.com>
Signed-off-by: Viresh Kumar <viresh.kumar at st.com>
---
arch/arm/mach-spear13xx/spear13xx.c | 19 ++++++++++++++++++-
arch/arm/mm/Kconfig | 2 +-
2 files changed, 19 insertions(+), 2 deletions(-)
diff --git a/arch/arm/mach-spear13xx/spear13xx.c b/arch/arm/mach-spear13xx/spear13xx.c
index 06f9abb..b5da555 100644
--- a/arch/arm/mach-spear13xx/spear13xx.c
+++ b/arch/arm/mach-spear13xx/spear13xx.c
@@ -18,6 +18,7 @@
#include <asm/irq.h>
#include <asm/localtimer.h>
#include <asm/mach/arch.h>
+#include <asm/hardware/cache-l2x0.h>
#include <asm/smp_twd.h>
#include <mach/generic.h>
#include <mach/hardware.h>
@@ -40,7 +41,16 @@ struct amba_device spear13xx_uart_device = {
/* Do spear13xx familiy common initialization part here */
void __init spear13xx_init(void)
{
- /* nothing to do for now */
+#ifdef CONFIG_CACHE_L2X0
+ /*
+ * 512KB (64KB/way), 8-way associativity, parity supported
+ *
+ * TODO: 0x249, picked from nomadik, to be analyzed
+ * Comment from nomadik:
+ * At full speed latency must be >=2, so 0x249 in low bits
+ */
+ l2x0_init(__io_address(SPEAR13XX_L2CC_BASE), 0x00260249, 0xfe00ffff);
+#endif
}
/* This will initialize vic */
@@ -62,6 +72,13 @@ struct map_desc spear13xx_io_desc[] __initdata = {
.pfn = __phys_to_pfn(SPEAR13XX_A9SM_PERIP_BASE),
.length = SZ_8K,
.type = MT_DEVICE
+#ifdef CONFIG_CACHE_L2X0
+ }, {
+ .virtual = IO_ADDRESS(SPEAR13XX_L2CC_BASE),
+ .pfn = __phys_to_pfn(SPEAR13XX_L2CC_BASE),
+ .length = SZ_4K,
+ .type = MT_DEVICE
+#endif
}, {
.virtual = IO_ADDRESS(SPEAR13XX_MISC_BASE),
.pfn = __phys_to_pfn(SPEAR13XX_MISC_BASE),
diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig
index e4509ba..fff2d89 100644
--- a/arch/arm/mm/Kconfig
+++ b/arch/arm/mm/Kconfig
@@ -813,7 +813,7 @@ config CACHE_L2X0
depends on REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || MACH_REALVIEW_PB1176 || \
REALVIEW_EB_A9MP || ARCH_MX35 || ARCH_MX31 || MACH_REALVIEW_PBX || \
ARCH_NOMADIK || ARCH_OMAP4 || ARCH_S5PV310 || ARCH_TEGRA || \
- ARCH_U8500 || ARCH_VEXPRESS_CA9X4 || ARCH_SHMOBILE
+ ARCH_SPEAR13XX || ARCH_U8500 || ARCH_VEXPRESS_CA9X4 || ARCH_SHMOBILE
default y
select OUTER_CACHE
select OUTER_CACHE_SYNC
--
1.7.2.2
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