diff options
| -rw-r--r-- | arch/arm/mach-cns3xxx/cns3420vb.c | 2 | ||||
| -rw-r--r-- | arch/arm/mach-cns3xxx/core.c | 43 | ||||
| -rw-r--r-- | arch/arm/mach-cns3xxx/core.h | 6 | ||||
| -rw-r--r-- | arch/arm/mm/Kconfig | 2 |
4 files changed, 52 insertions, 1 deletions
diff --git a/arch/arm/mach-cns3xxx/cns3420vb.c b/arch/arm/mach-cns3xxx/cns3420vb.c index 08e5c8759502..4b804baa5f80 100644 --- a/arch/arm/mach-cns3xxx/cns3420vb.c +++ b/arch/arm/mach-cns3xxx/cns3420vb.c @@ -170,6 +170,8 @@ static struct platform_device *cns3420_pdevs[] __initdata = { static void __init cns3420_init(void) { + cns3xxx_l2x0_init(); + platform_add_devices(cns3420_pdevs, ARRAY_SIZE(cns3420_pdevs)); cns3xxx_ahci_init(); diff --git a/arch/arm/mach-cns3xxx/core.c b/arch/arm/mach-cns3xxx/core.c index da30078a80c1..941a308e1253 100644 --- a/arch/arm/mach-cns3xxx/core.c +++ b/arch/arm/mach-cns3xxx/core.c @@ -16,6 +16,7 @@ #include <asm/mach/time.h> #include <asm/mach/irq.h> #include <asm/hardware/gic.h> +#include <asm/hardware/cache-l2x0.h> #include <mach/cns3xxx.h> #include "core.h" @@ -244,3 +245,45 @@ static void __init cns3xxx_timer_init(void) struct sys_timer cns3xxx_timer = { .init = cns3xxx_timer_init, }; + +#ifdef CONFIG_CACHE_L2X0 + +void __init cns3xxx_l2x0_init(void) +{ + void __iomem *base = ioremap(CNS3XXX_L2C_BASE, SZ_4K); + u32 val; + + if (WARN_ON(!base)) + return; + + /* + * Tag RAM Control register + * + * bit[10:8] - 1 cycle of write accesses latency + * bit[6:4] - 1 cycle of read accesses latency + * bit[3:0] - 1 cycle of setup latency + * + * 1 cycle of latency for setup, read and write accesses + */ + val = readl(base + L2X0_TAG_LATENCY_CTRL); + val &= 0xfffff888; + writel(val, base + L2X0_TAG_LATENCY_CTRL); + + /* + * Data RAM Control register + * + * bit[10:8] - 1 cycles of write accesses latency + * bit[6:4] - 1 cycles of read accesses latency + * bit[3:0] - 1 cycle of setup latency + * + * 1 cycle of latency for setup, read and write accesses + */ + val = readl(base + L2X0_DATA_LATENCY_CTRL); + val &= 0xfffff888; + writel(val, base + L2X0_DATA_LATENCY_CTRL); + + /* 32 KiB, 8-way, parity disable */ + l2x0_init(base, 0x00540000, 0xfe000fff); +} + +#endif /* CONFIG_CACHE_L2X0 */ diff --git a/arch/arm/mach-cns3xxx/core.h b/arch/arm/mach-cns3xxx/core.h index ffeb3a8b73ba..fcd225343c61 100644 --- a/arch/arm/mach-cns3xxx/core.h +++ b/arch/arm/mach-cns3xxx/core.h @@ -13,6 +13,12 @@ extern struct sys_timer cns3xxx_timer; +#ifdef CONFIG_CACHE_L2X0 +void __init cns3xxx_l2x0_init(void); +#else +static inline void cns3xxx_l2x0_init(void) {} +#endif /* CONFIG_CACHE_L2X0 */ + void __init cns3xxx_map_io(void); void __init cns3xxx_init_irq(void); void cns3xxx_power_off(void); diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig index 0074b8dba793..cb26d49a8cd6 100644 --- 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 |