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#include <string.h>
#include <stdio.h>
#include <lib/sys/vesa/vesa.h>
#include "sysdump.h"
void dump_vesa_tables(struct upload_backend *be)
{
com32sys_t rm;
struct vesa_info *vip;
struct vesa_general_info *gip, gi;
struct vesa_mode_info *mip, mi;
uint16_t mode, *mode_ptr;
char modefile[64];
printf("Scanning VESA BIOS... ");
/* Allocate space in the bounce buffer for these structures */
vip = lmalloc(sizeof *vip);
gip = &vip->gi;
mip = &vip->mi;
memset(&rm, 0, sizeof rm);
memset(gip, 0, sizeof *gip);
gip->signature = VBE2_MAGIC; /* Get VBE2 extended data */
rm.eax.w[0] = 0x4F00; /* Get SVGA general information */
rm.edi.w[0] = OFFS(gip);
rm.es = SEG(gip);
__intcall(0x10, &rm, &rm);
memcpy(&gi, gip, sizeof gi);
if (rm.eax.w[0] != 0x004F)
return; /* Function call failed */
if (gi.signature != VESA_MAGIC)
return; /* No magic */
cpio_mkdir(be, "vesa");
cpio_writefile(be, "vesa/global.bin", &gi, sizeof gi);
mode_ptr = GET_PTR(gi.video_mode_ptr);
while ((mode = *mode_ptr++) != 0xFFFF) {
memset(mip, 0, sizeof *mip);
rm.eax.w[0] = 0x4F01; /* Get SVGA mode information */
rm.ecx.w[0] = mode;
rm.edi.w[0] = OFFS(mip);
rm.es = SEG(mip);
__intcall(0x10, &rm, &rm);
/* Must be a supported mode */
if (rm.eax.w[0] != 0x004f)
continue;
memcpy(&mi, mip, sizeof mi);
sprintf(modefile, "vesa/mode%04x.bin", mode);
cpio_writefile(be, modefile, &mi, sizeof mi);
}
lfree(vip);
printf("done.\n");
}
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