diff options
Diffstat (limited to 'target/linux/cns3xxx/patches-3.0/103-cns3xxx_l2cache.patch')
| -rw-r--r-- | target/linux/cns3xxx/patches-3.0/103-cns3xxx_l2cache.patch | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/target/linux/cns3xxx/patches-3.0/103-cns3xxx_l2cache.patch b/target/linux/cns3xxx/patches-3.0/103-cns3xxx_l2cache.patch new file mode 100644 index 0000000..27d4b52 --- /dev/null +++ b/target/linux/cns3xxx/patches-3.0/103-cns3xxx_l2cache.patch @@ -0,0 +1,61 @@ +--- a/arch/arm/mach-cns3xxx/core.c ++++ b/arch/arm/mach-cns3xxx/core.c +@@ -15,6 +15,7 @@ + #include <asm/mach/map.h> + #include <asm/mach/time.h> + #include <asm/mach/irq.h> ++#include <asm/hardware/cache-l2x0.h> + #include <asm/hardware/gic.h> + #include <asm/smp_twd.h> + #include <mach/cns3xxx.h> +@@ -71,15 +72,29 @@ static struct map_desc cns3xxx_io_desc[] + .pfn = __phys_to_pfn(CNS3XXX_SSP_BASE), + .length = SZ_4K, + .type = MT_DEVICE, ++ }, { ++ .virtual = CNS3XXX_L2C_BASE_VIRT, ++ .pfn = __phys_to_pfn(CNS3XXX_L2C_BASE), ++ .length = SZ_4K, ++ .type = MT_DEVICE, + }, + }; + + void __init cns3xxx_map_io(void) + { ++ iotable_init(cns3xxx_io_desc, ARRAY_SIZE(cns3xxx_io_desc)); ++#ifdef CONFIG_CACHE_L2X0 ++ void __iomem *l2x0_base = (void __iomem *) CNS3XXX_L2C_BASE_VIRT; ++ ++ /* set RAM latencies to 1 cycle for this core tile. */ ++ writel(0, l2x0_base + L2X0_TAG_LATENCY_CTRL); ++ writel(0, l2x0_base + L2X0_DATA_LATENCY_CTRL); ++ ++ l2x0_init(l2x0_base, 0x00400000, 0xfe0fffff); ++#endif + #ifdef CONFIG_LOCAL_TIMERS + twd_base = (void __iomem *) CNS3XXX_TC11MP_TWD_BASE_VIRT; + #endif +- iotable_init(cns3xxx_io_desc, ARRAY_SIZE(cns3xxx_io_desc)); + } + + /* used by entry-macro.S */ +--- a/arch/arm/mm/Kconfig ++++ b/arch/arm/mm/Kconfig +@@ -821,7 +821,7 @@ config CACHE_L2X0 + depends on REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || MACH_REALVIEW_PB1176 || \ + REALVIEW_EB_A9MP || SOC_IMX35 || SOC_IMX31 || MACH_REALVIEW_PBX || \ + ARCH_NOMADIK || ARCH_OMAP4 || ARCH_EXYNOS4 || ARCH_TEGRA || \ +- ARCH_U8500 || ARCH_VEXPRESS_CA9X4 || ARCH_SHMOBILE ++ ARCH_U8500 || ARCH_VEXPRESS_CA9X4 || ARCH_SHMOBILE || ARCH_CNS3XXX + default y + select OUTER_CACHE + select OUTER_CACHE_SYNC +@@ -866,7 +866,7 @@ config ARM_L1_CACHE_SHIFT + config ARM_DMA_MEM_BUFFERABLE + bool "Use non-cacheable memory for DMA" if (CPU_V6 || CPU_V6K) && !CPU_V7 + depends on !(MACH_REALVIEW_PB1176 || REALVIEW_EB_ARM11MP || \ +- MACH_REALVIEW_PB11MP) ++ MACH_REALVIEW_PB11MP || ARCH_CNS3XXX) + default y if CPU_V6 || CPU_V6K || CPU_V7 + help + Historically, the kernel has used strongly ordered mappings to |