From 8e797a7e4f588fb3b9cfe9860b00dcd3b14f8b60 Mon Sep 17 00:00:00 2001 From: Srinidhi Kasagar Date: Sat, 3 Apr 2010 19:10:45 +0100 Subject: [PATCH] ARM: 6027/1: ux500: enable l2x0 support This enables the l2x0 support and ensures that the secondary CPU can see the page table and secondary data at this point. Signed-off-by: srinidhi kasagar Acked-by: Linus Walleij Signed-off-by: Russell King --- arch/arm/mach-ux500/cpu-u8500.c | 17 +++++++++++++++++ arch/arm/mach-ux500/platsmp.c | 3 ++- arch/arm/mm/Kconfig | 3 ++- 3 files changed, 21 insertions(+), 2 deletions(-) diff --git a/arch/arm/mach-ux500/cpu-u8500.c b/arch/arm/mach-ux500/cpu-u8500.c index 5fb4466..979f1c3 100644 --- a/arch/arm/mach-ux500/cpu-u8500.c +++ b/arch/arm/mach-ux500/cpu-u8500.c @@ -20,6 +20,7 @@ #include #include #include +#include #include #include #include @@ -127,6 +128,7 @@ static struct map_desc u8500_io_desc[] __initdata = { __IO_DEV_DESC(U8500_GPIO2_BASE, SZ_4K), __IO_DEV_DESC(U8500_GPIO3_BASE, SZ_4K), __IO_DEV_DESC(U8500_GPIO5_BASE, SZ_4K), + __IO_DEV_DESC(U8500_L2CC_BASE, SZ_4K), }; static struct map_desc u8500ed_io_desc[] __initdata = { @@ -183,3 +185,18 @@ static void __init u8500_timer_init(void) struct sys_timer u8500_timer = { .init = u8500_timer_init, }; + +#ifdef CONFIG_CACHE_L2X0 +static int u8500_l2x0_init(void) +{ + void __iomem *l2x0_base; + + l2x0_base = __io_address(U8500_L2CC_BASE); + + /* 64KB way size, 8 way associativity, force WA */ + l2x0_init(l2x0_base, 0x3e060000, 0xc0000fff); + + return 0; +} +early_initcall(u8500_l2x0_init); +#endif diff --git a/arch/arm/mach-ux500/platsmp.c b/arch/arm/mach-ux500/platsmp.c index 8dfe7ca..76dd935 100644 --- a/arch/arm/mach-ux500/platsmp.c +++ b/arch/arm/mach-ux500/platsmp.c @@ -75,7 +75,8 @@ int __cpuinit boot_secondary(unsigned int cpu, struct task_struct *idle) * that it has been released by resetting pen_release. */ pen_release = cpu; - flush_cache_all(); + __cpuc_flush_dcache_area((void *)&pen_release, sizeof(pen_release)); + outer_clean_range(__pa(&pen_release), __pa(&pen_release) + 1); timeout = jiffies + (1 * HZ); while (time_before(jiffies, timeout)) { diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig index c4ed9f9..22c1c83 100644 --- a/arch/arm/mm/Kconfig +++ b/arch/arm/mm/Kconfig @@ -754,7 +754,8 @@ config CACHE_FEROCEON_L2_WRITETHROUGH config CACHE_L2X0 bool "Enable the L2x0 outer cache controller" 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 + REALVIEW_EB_A9MP || ARCH_MX35 || ARCH_MX31 || MACH_REALVIEW_PBX || \ + ARCH_NOMADIK || ARCH_OMAP4 || ARCH_U8500 default y select OUTER_CACHE help -- 2.7.4