diff options
| author | Russell King | 2005-11-07 21:05:42 +0000 |
|---|---|---|
| committer | Russell King | 2005-11-07 21:05:42 +0000 |
| commit | 862184fe013146a0d9654a5598c5a2691747541c (patch) | |
| tree | 0f3f0d46c79c7eae3d504c0e1be9ff923f1b2e36 /arch/arm/mm/proc-v6.S | |
| parent | fea543f47733cc843cd74d95065ed1d4a04b38ed (diff) | |
[ARM SMP] Add Realview MPcore SMP support
Add SMP support for the MPcore tile fitted to the Realview ARM
platform.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mm/proc-v6.S')
| -rw-r--r-- | arch/arm/mm/proc-v6.S | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/arch/arm/mm/proc-v6.S b/arch/arm/mm/proc-v6.S index a39d8fa2ede5..92f3ca31b7b9 100644 --- a/arch/arm/mm/proc-v6.S +++ b/arch/arm/mm/proc-v6.S @@ -12,6 +12,7 @@ #include <linux/linkage.h> #include <asm/assembler.h> #include <asm/asm-offsets.h> +#include <asm/hardware/arm_scu.h> #include <asm/procinfo.h> #include <asm/pgtable.h> @@ -194,6 +195,23 @@ cpu_v6_name: * - cache type register is implemented */ __v6_setup: +#ifdef CONFIG_SMP + /* Set up the SCU on core 0 only */ + mrc p15, 0, r0, c0, c0, 5 @ CPU core number + ands r0, r0, #15 + moveq r0, #0x10000000 @ SCU_BASE + orreq r0, r0, #0x00100000 + ldreq r5, [r0, #SCU_CTRL] + orreq r5, r5, #1 + streq r5, [r0, #SCU_CTRL] + +#ifndef CONFIG_CPU_DCACHE_DISABLE + mrc p15, 0, r0, c1, c0, 1 @ Enable SMP/nAMP mode + orr r0, r0, #0x20 + mcr p15, 0, r0, c1, c0, 1 +#endif +#endif + mov r0, #0 mcr p15, 0, r0, c7, c14, 0 @ clean+invalidate D cache mcr p15, 0, r0, c7, c5, 0 @ invalidate I cache |