[U-Boot] [PATCH] Fix wrong >4G filtering
Vladimir 'φ-coder/phcoder' Serbinenko
phcoder at gmail.com
Sun Apr 7 17:33:54 CEST 2013
Filtering of >4G chunks is wrong and one of such chunks can be improperly declared
as usable ram top after being cut down to 4G, so uboot tries to relocate to ROM.
diff --git a/arch/x86/cpu/coreboot/sdram.c b/arch/x86/cpu/coreboot/sdram.c
index 786009c..3b8dd5e 100644
--- a/arch/x86/cpu/coreboot/sdram.c
+++ b/arch/x86/cpu/coreboot/sdram.c
@@ -77,8 +77,11 @@ ulong board_get_usable_ram_top(ulong total_size)
continue;
/* Filter memory over 4GB. */
+ if (start > 0xffffffffULL)
+ continue;
if (end > 0xffffffffULL)
- end = 0x100000000ULL;
+ end = 0xffffffffULL;
+
/* Skip this region if it's too small. */
if (end - start < total_size)
continue;
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