diff options
Diffstat (limited to 'src/arch/i386/firmware/pcbios/basemem.c')
| -rw-r--r-- | src/arch/i386/firmware/pcbios/basemem.c | 21 |
1 files changed, 4 insertions, 17 deletions
diff --git a/src/arch/i386/firmware/pcbios/basemem.c b/src/arch/i386/firmware/pcbios/basemem.c index 11fa6dce..8e65b8da 100644 --- a/src/arch/i386/firmware/pcbios/basemem.c +++ b/src/arch/i386/firmware/pcbios/basemem.c @@ -22,17 +22,6 @@ #define fbms ( * ( ( uint16_t * ) phys_to_virt ( 0x413 ) ) ) #define FBMS_MAX ( 640 ) -/* Structure that we use to represent a free block of base memory - */ -#define FREE_BLOCK_MAGIC ( ('!'<<0) + ('F'<<8) + ('R'<<16) + ('E'<<24) ) -union free_base_memory_block { - struct { - uint32_t magic; - uint16_t size_kb; - }; - char bytes[1024]; -}; - /* Local prototypes */ static void free_unused_base_memory ( void ); @@ -188,12 +177,10 @@ static void free_unused_base_memory ( void ) { free_block->size_kb, ( fbms << 6 ), ( fbms + free_block->size_kb ) << 6 ); - /* Zero out freed block. We do this in case - * the block contained any structures that - * might be located by scanning through - * memory. + /* Do not zero out the freed block, because it might + * be the one containing librm, in which case we're + * going to have severe problems the next time we use + * DBG() or, failing that, call get_memsizes(). */ - memset ( free_block, 0, free_block->size_kb << 10 ); - } } |