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MFi386: sys/boot/i386/loader/main.c revision 1.25

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This commit is contained in:
nyan 2001-11-06 12:31:56 +00:00
parent 0975bb0246
commit f6200bb4f8
1 changed files with 16 additions and 14 deletions
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30
sys/boot/pc98/loader/main.c
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@ -109,12 +109,17 @@ main(void)
bcache_init(32, 512); /* 16k cache XXX tune this */
/*
* We only want the PXE disk to try to init itself in the below walk through
* devsw if we actually booted off of PXE.
* Special handling for PXE and CD booting.
*/
if((kargs->bootinfo == NULL) &&
((kargs->bootflags & KARGS_FLAGS_PXE) != 0)) {
pxe_enable(kargs->pxeinfo ? PTOV(kargs->pxeinfo) : NULL);
if (kargs->bootinfo == NULL) {
/*
* We only want the PXE disk to try to init itself in the below
* walk through devsw if we actually booted off of PXE.
*/
if (kargs->bootflags & KARGS_FLAGS_PXE)
pxe_enable(kargs->pxeinfo ? PTOV(kargs->pxeinfo) : NULL);
else if (kargs->bootflags & KARGS_FLAGS_CD)
bc_add(initial_bootdev);
}
/*
@ -161,25 +166,21 @@ static void
extract_currdev(void)
{
struct i386_devdesc new_currdev;
int major, biosdev;
int major, biosdev = -1;
/* Assume we are booting from a BIOS disk by default */
new_currdev.d_dev = &biosdisk;
new_currdev.d_type = new_currdev.d_dev->dv_type;
/* new-style boot loaders such as pxeldr and cdldr */
if (kargs->bootinfo == NULL) {
if ((kargs->bootflags & KARGS_FLAGS_CD) != 0) {
/* we are booting from a CD with cdldr */
new_currdev.d_kind.biosdisk.slice = -1;
new_currdev.d_kind.biosdisk.partition = 0;
biosdev = initial_bootdev;
/* we are booting from a CD with cdboot */
new_currdev.d_dev = &bioscd;
new_currdev.d_kind.bioscd.unit = bc_bios2unit(initial_bootdev);
} else if ((kargs->bootflags & KARGS_FLAGS_PXE) != 0) {
/* we are booting from pxeldr */
new_currdev.d_dev = &pxedisk;
new_currdev.d_type = new_currdev.d_dev->dv_type;
new_currdev.d_kind.netif.unit = 0;
biosdev = -1;
} else {
/* we don't know what our boot device is */
new_currdev.d_kind.biosdisk.slice = -1;
@ -216,12 +217,13 @@ extract_currdev(void)
biosdev = 0x80 + B_UNIT(initial_bootdev); /* assume harddisk */
#endif
}
new_currdev.d_type = new_currdev.d_dev->dv_type;
/*
* If we are booting off of a BIOS disk and we didn't succeed in determining
* which one we booted off of, just use disk0: as a reasonable default.
*/
if ((new_currdev.d_type == devsw[0]->dv_type) &&
if ((new_currdev.d_type == biosdisk.dv_type) &&
((new_currdev.d_kind.biosdisk.unit = bd_bios2unit(biosdev)) == -1)) {
printf("Can't work out which disk we are booting from.\n"
"Guessed BIOS device 0x%x not found by probes, defaulting to disk0:\n", biosdev);