mach-ux500: do not override outer.inv_all

[firefly-linux-kernel-4.4.55.git] / arch / arm / mach-ux500 / cache-l2x0.c

diff --git a/arch/arm/mach-ux500/cache-l2x0.c b/arch/arm/mach-ux500/cache-l2x0.c
index 122ddde00ba78deabf82db84273705598ffda34e..da5569d83d58d87216438bf65aa15de86a6f71ea 100644 (file)
--- 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;
 }