From fd9defc0cac3d3a89b3f1d9f973efbb2233f1ac6 Mon Sep 17 00:00:00 2001 From: Julius Werner Date: Tue, 21 Jan 2014 20:11:22 -0800 Subject: arm: Redesign, clarify and clean up cache related code This patch changes several cache-related pieces to be cleaner, faster or more correct. The largest point is removing the old arm_invalidate_caches() function and surrounding bootblock code to initialize SCTLR and replace it with an all-assembly function that takes care of cache and SCTLR initialization to bring the system to a known state. It runs without stack and before coreboot makes any write accesses to be as compatible as possible with whatever state the system was left in by preceeding code. This also finally fixes the dreaded icache bug that wasted hundreds of milliseconds during boot. Old-Change-Id: I7bb4995af8184f6383f8e3b1b870b0662bde8bd4 Signed-off-by: Julius Werner Reviewed-on: https://chromium-review.googlesource.com/183890 (cherry picked from commit 07a35925dc957919bf88dfc90515971a36e81b97) nyan_big: apply cache-related changes from nyan This applies the same changes from 07a3592 that were applied to nyan. Old-Change-Id: Idcbe85436d7a2f65fcd751954012eb5f4bec0b6c Reviewed-on: https://chromium-review.googlesource.com/184551 Commit-Queue: David Hendricks Tested-by: David Hendricks Reviewed-by: David Hendricks (cherry picked from commit 4af27f02614da41c611aee2c6d175b1b948428ea) Squashed the followup patch for nyan_big into the original patch. Change-Id: Id14aef7846355ea2da496e55da227b635aca409e Signed-off-by: Isaac Christensen (cherry picked from commit 4cbf25f8eca3a12bbfec5b015953c0fc2b69c877) Signed-off-by: Marc Jones Reviewed-on: http://review.coreboot.org/6993 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer --- src/arch/arm/armv4/cache.c | 7 +------ 1 file changed, 1 insertion(+), 6 deletions(-) (limited to 'src/arch/arm/armv4') diff --git a/src/arch/arm/armv4/cache.c b/src/arch/arm/armv4/cache.c index e5cf293dce..140beee060 100644 --- a/src/arch/arm/armv4/cache.c +++ b/src/arch/arm/armv4/cache.c @@ -39,10 +39,6 @@ void tlb_invalidate_all(void) { } -void icache_invalidate_all(void) -{ -} - void dcache_clean_all(void) { } @@ -82,11 +78,10 @@ void dcache_mmu_disable(void) { } - void dcache_mmu_enable(void) { } -void arm_invalidate_caches(void) +void cache_sync_instructions(void) { } -- cgit v1.2.3