diff options
| -rw-r--r-- | src/arch/i386/firmware/pcbios/memmap.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/arch/i386/firmware/pcbios/memmap.c b/src/arch/i386/firmware/pcbios/memmap.c index 3546dc6f..ff387d93 100644 --- a/src/arch/i386/firmware/pcbios/memmap.c +++ b/src/arch/i386/firmware/pcbios/memmap.c @@ -201,6 +201,13 @@ static int meme820 ( struct memory_map *memmap ) { break; } + /* If first region is not RAM, assume map is invalid */ + if ( ( memmap->count == 0 ) && + ( e820buf.type != E820_TYPE_RAM ) ) { + DBG ( "INT 15,e820 failed, first entry not RAM\n" ); + return -EINVAL; + } + DBG ( "INT 15,e820 region [%llx,%llx) type %d", e820buf.start, ( e820buf.start + e820buf.len ), ( int ) e820buf.type ); |