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armv7: invalidate TLB entries as they are added/modified 

The old approach was to invalidate the entire TLB every time we set up
a table entry. This worked because we didn't turn the MMU on until
after we had set everything up. This patch uses the TLBIMVAA wrapper
to invalidate each entry as it's added/modified.

Change-Id: I27654a543a2015574d910e15d48b3d3845fdb6d1
Signed-off-by: David Hendricks <dhendrix@chromium.org>
Reviewed-on: http://review.coreboot.org/3166
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Tested-by: build bot (Jenkins)
This commit is contained in:
David Hendricks 2013-04-30 16:01:50 -07:00
parent 5c2025c40f
commit 3f39cd2920
1 changed files with 3 additions and 4 deletions
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7
src/arch/armv7/lib/mmu.c
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@ -99,11 +99,10 @@ void mmu_config_range(unsigned long start_mb, unsigned long size_mb,
printk(BIOS_DEBUG, "Setting dcache policy: 0x%08lx:0x%08lx [%s]\n", printk(BIOS_DEBUG, "Setting dcache policy: 0x%08lx:0x%08lx [%s]\n",
start_mb << 20, ((start_mb + size_mb) << 20) - 1, str); start_mb << 20, ((start_mb + size_mb) << 20) - 1, str);
for (i = start_mb; i < start_mb + size_mb; i++) for (i = start_mb; i < start_mb + size_mb; i++) {
ttb_entry[i] = (i << 20) | attr; ttb_entry[i] = (i << 20) | attr;
tlbimvaa(start_mb);
/* TODO: add helper to invalidate TLB by MVA */ }
tlb_invalidate_all();
} }
void mmu_init(void) void mmu_init(void)