diff options
| -rw-r--r-- | src/mainboard/emulation/qemu-armv7/media.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/src/mainboard/emulation/qemu-armv7/media.c b/src/mainboard/emulation/qemu-armv7/media.c index c3760ab033..8c71263e67 100644 --- a/src/mainboard/emulation/qemu-armv7/media.c +++ b/src/mainboard/emulation/qemu-armv7/media.c @@ -26,7 +26,9 @@ static int emu_rom_open(struct cbfs_media *media) static void *emu_rom_map(struct cbfs_media *media, size_t offset, size_t count) { - return (void*)offset; + if (offset + count > CONFIG_ROM_SIZE) + return (void *)-1; + return (void*)(offset + 0x10000); } static void *emu_rom_unmap(struct cbfs_media *media, const void *address) @@ -38,6 +40,10 @@ static size_t emu_rom_read(struct cbfs_media *media, void *dest, size_t offset, size_t count) { void *ptr = emu_rom_map(media, offset, count); + + if (ptr == (void *)-1) + return 0; + memcpy(dest, ptr, count); emu_rom_unmap(media, ptr); return count; |