x86: Ignore memory >4GB when parsing Coreboot tables

U-boot is unable to actually use that memory and it can
cause problems with relocation if it tries to.

Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>

diff --git a/arch/x86/cpu/coreboot/sdram.c b/arch/x86/cpu/coreboot/sdram.c
index 93dccb83effc2765f367347462b0a9c0e644f3f9..5d3da9977c8cbf9b643fe43158a2c568647917f3 100644 (file)
--- a/arch/x86/cpu/coreboot/sdram.c
+++ b/arch/x86/cpu/coreboot/sdram.c
@@ -60,6 +60,10 @@ int dram_init_f(void)
                struct memrange *memrange = &lib_sysinfo.memrange[i];
                unsigned long long end = memrange->base + memrange->size;
 
+               /* Ignore memory over 4GB, we can't use it. */
+               if (memrange->base > 0xffffffff)
+                       continue;
+
                if (memrange->type == CB_MEM_RAM && end > ram_size)
                        ram_size = end;
        }