sysadmin/ipxe
1
0
Fork 0
mirror of https://github.com/ipxe/ipxe synced 2026-01-22 12:08:58 +03:00
Code Issues Packages Projects Releases Wiki Activity

[comboot] Use memmap_describe() to obtain available memory

Browse Source 
Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2025-05-15 23:45:55 +01:00
parent d0adf3b4cc
commit dbc86458e5
1 changed files with 5 additions and 15 deletions
Download Patch File Download Diff File Expand all files Collapse all files

20
src/arch/x86/image/com32.c
View File

@@ -39,7 +39,7 @@ FILE_LICENCE ( GPL2_OR_LATER );
#include <ipxe/image.h>
#include <ipxe/segment.h>
#include <ipxe/init.h>
#include <ipxe/io.h>
#include <ipxe/memmap.h>
#include <ipxe/console.h>
/**
@@ -49,8 +49,7 @@ FILE_LICENCE ( GPL2_OR_LATER );
* @ret rc Return status code
*/
static int com32_exec_loop ( struct image *image ) {
struct memory_map memmap;
unsigned int i;
struct memmap_region region;
int state;
uint32_t avail_mem_top;
@@ -59,21 +58,12 @@ static int com32_exec_loop ( struct image *image ) {
switch ( state ) {
case 0: /* First time through; invoke COM32 program */
/* Get memory map */
get_memmap ( &memmap );
/* Find end of block covering COM32 image loading area */
for ( i = 0, avail_mem_top = 0 ; i < memmap.count ; i++ ) {
if ( (memmap.regions[i].start <= COM32_START_PHYS) &&
(memmap.regions[i].end > COM32_START_PHYS + image->len) ) {
avail_mem_top = memmap.regions[i].end;
break;
}
}
memmap_describe ( COM32_START_PHYS, 1, &region );
assert ( memmap_is_usable ( &region ) );
avail_mem_top = ( COM32_START_PHYS + memmap_size ( &region ) );
DBGC ( image, "COM32 %p: available memory top = 0x%x\n",
image, avail_mem_top );
assert ( avail_mem_top != 0 );
/* Hook COMBOOT API interrupts */