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Don't call INT 12H anymore in boot program.

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Many recent machine have a broken INT 12H (Get base memory size)
implementation and boot program stops if INT 12H is called.

This commit should solve the problem at very first step of FreeBSD
installation occurred on newer some machines.

Reviewed by:	bde, jhb
MFC after:	1 week
This commit is contained in:
Mitsuru IWASAKI 2002-10-01 19:31:09 +00:00
parent c111eed934
commit 31db71276a
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=104315
3 changed files with 6 additions and 2 deletions
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2
sys/boot/i386/boot2/boot2.c
View file

@ -232,7 +232,7 @@ main(void)
dsk.slice = *(uint8_t *)PTOV(ARGS + 1) + 1;
bootinfo.bi_version = BOOTINFO_VERSION;
bootinfo.bi_size = sizeof(bootinfo);
bootinfo.bi_basemem = memsize(MEM_BASE);
bootinfo.bi_basemem = 0; /* XXX will be filled by loader or kernel */
bootinfo.bi_extmem = memsize(MEM_EXT);
bootinfo.bi_memsizes_valid++;
for (i = 0; i < N_BIOS_GEOM; i++)

2
sys/boot/i386/gptboot/gptboot.c
View file

@ -232,7 +232,7 @@ main(void)
dsk.slice = *(uint8_t *)PTOV(ARGS + 1) + 1;
bootinfo.bi_version = BOOTINFO_VERSION;
bootinfo.bi_size = sizeof(bootinfo);
bootinfo.bi_basemem = memsize(MEM_BASE);
bootinfo.bi_basemem = 0; /* XXX will be filled by loader or kernel */
bootinfo.bi_extmem = memsize(MEM_EXT);
bootinfo.bi_memsizes_valid++;
for (i = 0; i < N_BIOS_GEOM; i++)

4
sys/boot/i386/loader/main.c
View file

@ -129,6 +129,10 @@ main(void)
if (devsw[i]->dv_init != NULL)
(devsw[i]->dv_init)();
printf("BIOS %dkB/%dkB available memory\n", bios_basemem / 1024, bios_extmem / 1024);
if (initial_bootinfo != NULL) {
initial_bootinfo->bi_basemem = bios_basemem / 1024;
initial_bootinfo->bi_extmem = bios_extmem / 1024;
}
/* detect ACPI for future reference */
biosacpi_detect();