[PATCH V2 49/69] ST SPEAr13xx: add L2 cache support
From: Viresh KUMAR <hidden>
Date: 2010-10-01 12:00:03
Also in:
linux-arm-kernel, lkml
Subsystem:
arm port, the rest · Maintainers:
Russell King, Linus Torvalds
From: Shiraz Hashim <redacted> Signed-off-by: shiraz hashim <redacted> Signed-off-by: Viresh Kumar <redacted> --- arch/arm/mach-spear13xx/spear13xx.c | 19 +++++++++++++++++++ arch/arm/mm/Kconfig | 2 +- 2 files changed, 20 insertions(+), 1 deletions(-)
diff --git a/arch/arm/mach-spear13xx/spear13xx.c b/arch/arm/mach-spear13xx/spear13xx.c
index c86bd1c..8c8a21d 100644
--- a/arch/arm/mach-spear13xx/spear13xx.c
+++ b/arch/arm/mach-spear13xx/spear13xx.c@@ -22,6 +22,7 @@ #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/irqs.h> #include <mach/generic.h>
@@ -526,6 +527,17 @@ struct platform_device spear13xx_pcie_gadget2_device = { /* Do spear13xx familiy common initialization part here */ void __init spear13xx_init(void) { +#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 + sdhci_enable(); }
@@ -548,6 +560,13 @@ 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 a0a2928..f3eea13 100644
--- a/arch/arm/mm/Kconfig
+++ b/arch/arm/mm/Kconfig@@ -772,7 +772,7 @@ 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_SPEAR13XX || ARCH_U8500 || ARCH_VEXPRESS_CA9X4 default y select OUTER_CACHE select OUTER_CACHE_SYNC
--
1.7.2.2
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