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author | Sascha Hauer <s.hauer@pengutronix.de> | 2014-03-18 09:53:18 +0100 |
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committer | Sascha Hauer <s.hauer@pengutronix.de> | 2014-03-18 17:26:23 +0100 |
commit | 5a6410edd7fcbd16c7c637a22a8bab7dcaeda402 (patch) | |
tree | 9a264a8996cfd2039424e0a7deb024afd4916078 | |
parent | 0017d4d2d68736f92d9efcecccf73e9475591578 (diff) | |
download | barebox-5a6410edd7fcbd16c7c637a22a8bab7dcaeda402.tar.gz barebox-5a6410edd7fcbd16c7c637a22a8bab7dcaeda402.tar.xz |
ARM: MMU: Fix memory reaching to the end of address space
For memory reaching the end of the address space
phys + bank->size overflows to 0. Fix this by right shifting
phys and bank->size before adding them.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Tested-by: Sean Cross <xobs@kosagi.com>
-rw-r--r-- | arch/arm/cpu/mmu.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm/cpu/mmu.c b/arch/arm/cpu/mmu.c index 84daa3d80e..bf0141b946 100644 --- a/arch/arm/cpu/mmu.c +++ b/arch/arm/cpu/mmu.c @@ -200,7 +200,7 @@ static int arm_mmu_remap_sdram(struct memory_bank *bank) { unsigned long phys = (unsigned long)bank->start; unsigned long ttb_start = phys >> 20; - unsigned long ttb_end = (phys + bank->size) >> 20; + unsigned long ttb_end = (phys >> 20) + (bank->size >> 20); unsigned long num_ptes = bank->size >> 10; int i, pte; u32 *ptes; |