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Make LimineMHDIns.ZC from script to file with defined LimineMHDIns() function with drv_let arg.

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File now uses an #ifndef to check whether or not the limine binary bytes have been included.
This commit is contained in:
TomAwezome 2022-10-11 21:20:09 -04:00
parent 6e5a75243b
commit b0d2cd6767
1 changed files with 30 additions and 16 deletions
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46
src/System/Boot/LimineMHDIns.ZC
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@ -1,4 +1,3 @@
#include "/Boot/Limine-HDD.HH"
class CLimineStage2Header
{
@ -8,26 +7,41 @@ class CLimineStage2Header
U64 location_b;
};
U8 *limine = binary_limine_hdd_bin_data;
U16 limine_size = sizeof(binary_limine_hdd_bin_data);
CLimineStage2Header *limine_stage2 = limine + 0x1A4;
#ifndef binary_limine_hdd_bin_data
U8 binary_limine_hdd_bin_data[0];
#endif
U16 limine_stage2_size = limine_size - BLK_SIZE;
U16 limine_stage2_size_aligned = limine_stage2_size + ((BLK_SIZE * 2) - limine_stage2_size % (BLK_SIZE * 2));
Bool LimineMHDIns(U8 drv_let)
{
U8 *limine = binary_limine_hdd_bin_data;
U16 limine_size = sizeof(binary_limine_hdd_bin_data);
CLimineStage2Header *limine_stage2 = limine + 0x1A4;
U16 limine_stage2_size = limine_size - BLK_SIZE;
U16 limine_stage2_size_aligned = limine_stage2_size + ((BLK_SIZE * 2) - limine_stage2_size % (BLK_SIZE * 2));
limine_stage2->size_a = limine_stage2->size_b = limine_stage2_size_aligned / 2;
limine_stage2->location_a = BLK_SIZE;
limine_stage2->location_b = BLK_SIZE + limine_stage2->size_a;
if (limine_size == 0)
{
"\n" ST_ERR_ST "Limine HDD MBR binary bytes not found. Must first #include it, then recompile this file.\n";
return FALSE;
}
CBlkDev *bd = Letter2BlkDev('c');
CMasterBoot old_mbr, *new_mbr = limine;
limine_stage2->size_a = limine_stage2->size_b = limine_stage2_size_aligned / 2;
limine_stage2->location_a = BLK_SIZE;
limine_stage2->location_b = BLK_SIZE + limine_stage2->size_a;
BlkDevLock(bd);
CBlkDev *bd = Letter2BlkDev(drv_let);
CMasterBoot old_mbr, *new_mbr = limine;
AHCIAtaBlksRead(bd, &old_mbr, 0, 1); // read old MBR currently on disk
BlkDevLock(bd);
MemCopy(new_mbr->p, old_mbr.p, sizeof(CMasterBoot.p)); // copy old MBR partition table to new Limine MBR
AHCIAtaBlksRead(bd, &old_mbr, 0, 1); // read old MBR currently on disk
AHCIAtaBlksWrite(bd, limine, 0, 1 + (limine_stage2_size_aligned / BLK_SIZE)); // write Limine to MBR and post-MBR gap
MemCopy(new_mbr->p, old_mbr.p, sizeof(CMasterBoot.p)); // copy old MBR partition table to new Limine MBR
BlkDevUnlock(bd);
AHCIAtaBlksWrite(bd, limine, 0, 1 + (limine_stage2_size_aligned / BLK_SIZE)); // write Limine to MBR and post-MBR gap
BlkDevUnlock(bd);
return TRUE;
}