diff options
author | Ingo Molnar <mingo@elte.hu> | 2012-03-14 09:48:16 +0100 |
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committer | Ingo Molnar <mingo@elte.hu> | 2012-03-14 09:48:16 +0100 |
commit | c96a9876696d30783ad54399351a0bf3660db53f (patch) | |
tree | 74daba0ed1fd2838e8eb527c4f7fe5262ee979bd /arch/arm/mach-ux500/cache-l2x0.c | |
parent | d1f42e314c9c50541c79a6edf2b4cab63fe02ee3 (diff) | |
parent | fde7d9049e55ab85a390be7f415d74c9f62dd0f9 (diff) |
Merge tag 'v3.3-rc7' into x86/platform
Merge reason: Update to the almost-final v3.3 kernel.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/arm/mach-ux500/cache-l2x0.c')
-rw-r--r-- | arch/arm/mach-ux500/cache-l2x0.c | 48 |
1 files changed, 7 insertions, 41 deletions
diff --git a/arch/arm/mach-ux500/cache-l2x0.c b/arch/arm/mach-ux500/cache-l2x0.c index 122ddde00ba..da5569d83d5 100644 --- a/arch/arm/mach-ux500/cache-l2x0.c +++ b/arch/arm/mach-ux500/cache-l2x0.c @@ -12,44 +12,6 @@ static void __iomem *l2x0_base; -static inline void ux500_cache_wait(void __iomem *reg, unsigned long mask) -{ - /* wait for the operation to complete */ - while (readl_relaxed(reg) & mask) - cpu_relax(); -} - -static inline void ux500_cache_sync(void) -{ - writel_relaxed(0, l2x0_base + L2X0_CACHE_SYNC); - ux500_cache_wait(l2x0_base + L2X0_CACHE_SYNC, 1); -} - -/* - * The L2 cache cannot be turned off in the non-secure world. - * Dummy until a secure service is in place. - */ -static void ux500_l2x0_disable(void) -{ -} - -/* - * This is only called when doing a kexec, just after turning off the L2 - * and L1 cache, and it is surrounded by a spinlock in the generic version. - * However, we're not really turning off the L2 cache right now and the - * PL310 does not support exclusive accesses (used to implement the spinlock). - * So, the invalidation needs to be done without the spinlock. - */ -static void ux500_l2x0_inv_all(void) -{ - uint32_t l2x0_way_mask = (1<<16) - 1; /* Bitmask of active ways */ - - /* invalidate all ways */ - writel_relaxed(l2x0_way_mask, l2x0_base + L2X0_INV_WAY); - ux500_cache_wait(l2x0_base + L2X0_INV_WAY, l2x0_way_mask); - ux500_cache_sync(); -} - static int __init ux500_l2x0_unlock(void) { int i; @@ -85,9 +47,13 @@ static int __init ux500_l2x0_init(void) /* 64KB way size, 8 way associativity, force WA */ l2x0_init(l2x0_base, 0x3e060000, 0xc0000fff); - /* Override invalidate function */ - outer_cache.disable = ux500_l2x0_disable; - outer_cache.inv_all = ux500_l2x0_inv_all; + /* + * We can't disable l2 as we are in non secure mode, currently + * this seems be called only during kexec path. So let's + * override outer.disable with nasty assignment until we have + * some SMI service available. + */ + outer_cache.disable = NULL; return 0; } |