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of: Fix memory block alignment in early_init_dt_add_memory_arch()

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If a memory block is not aligned to PAGE_SIZE, its base address must be
rounded up, not down, and its size must be reduced.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Grant Likely <grant.likely@linaro.org>
This commit is contained in:
Geert Uytterhoeven 2014-08-20 17:10:31 +02:00 committed by Grant Likely
parent 7dbe5849fb
commit 8f73d4b701
1 changed files with 5 additions and 1 deletions
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6
drivers/of/fdt.c
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@ -928,7 +928,11 @@ int __init early_init_dt_scan_chosen(unsigned long node, const char *uname,
void __init __weak early_init_dt_add_memory_arch(u64 base, u64 size)
{
const u64 phys_offset = __pa(PAGE_OFFSET);
base &= PAGE_MASK;
if (!PAGE_ALIGNED(base)) {
size -= PAGE_SIZE - (base & ~PAGE_MASK);
base = PAGE_ALIGN(base);
}
size &= PAGE_MASK;
if (base > MAX_PHYS_ADDR) {