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Added more verbose memory-map debugging.

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Added redundant call to get_memmap() in int13_boot() immediately
before jumping to boot sector, to assist in debugging.
This commit is contained in:
Michael Brown
2007-09-21 18:27:51 +01:00
parent 1e677b2024
commit a7eee64506
2 changed files with 43 additions and 11 deletions
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9
src/arch/i386/interface/pcbios/int13.c
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@@ -23,6 +23,7 @@
#include <assert.h>
#include <gpxe/list.h>
#include <gpxe/blockdev.h>
#include <gpxe/memmap.h>
#include <realmode.h>
#include <bios.h>
#include <biosint.h>
@@ -601,6 +602,7 @@ void unregister_int13_drive ( struct int13_drive *drive ) {
* Note that this function can never return success, by definition.
*/
int int13_boot ( unsigned int drive ) {
struct memory_map memmap;
int status, signature;
int discard_c, discard_d;
int rc;
@@ -634,6 +636,13 @@ int int13_boot ( unsigned int drive ) {
return -ENOEXEC;
}
/* Dump out memory map prior to boot, if memmap debugging is
* enabled. Not required for program flow, but we have so
* many problems that turn out to be memory-map related that
* it's worth doing.
*/
get_memmap ( &memmap );
/* Jump to boot sector */
if ( ( rc = call_bootsector ( 0x0, 0x7c00, drive ) ) != 0 ) {
DBG ( "INT 13 drive %02x boot returned\n", drive );