hardenedbsd/HardenedBSD
1
0
Fork 0
mirror of https://git.hardenedbsd.org/hardenedbsd/HardenedBSD.git synced 2025-01-01 00:18:15 +01:00
Code Issues Actions Packages Projects Releases Wiki Activity

- This code adds some backwards compatability hacks for buggy APM BIOS

Browse Source 
implementations, and synchronizes us with the Nomad's latest code.

This code is based on the Nomad code, but heavily hacked by me.

Reviewed by:	phk
Submitted by:	the 'Nomads'
This commit is contained in:
Nate Williams 1996-04-23 19:59:14 +00:00
parent e12ac36c96
commit 2922666380
2 changed files with 50 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
sys/i386/apm/apm.c
View File

@ -14,7 +14,7 @@
*
* Sep, 1994 Implemented on FreeBSD 1.1.5.1R (Toshiba AVS001WD)
*
* $Id: apm.c,v 1.39 1996/04/22 19:40:18 nate Exp $
* $Id: apm.c,v 1.40 1996/04/23 16:02:45 nate Exp $
*/
#include "apm.h"
@ -688,6 +688,13 @@ apmattach(struct isa_device *dvp)
{
#define APM_KERNBASE KERNBASE
struct apm_softc *sc = &apm_softc;
#ifdef APM_DSVALUE_BUG
caddr_t apm_bios_work;
apm_bioswork = (caddr_t)malloc(apm_ds_limit, M_DEVBUG, M_NOWAIT);
bcopy((caddr_t)((apm_ds_base << 4) + APM_KERNBASE), apm_bios_work,
apm_ds_limit);
#endif /* APM_DSVALUE_BUG */
sc->initialized = 0;
@ -702,6 +709,10 @@ apmattach(struct isa_device *dvp)
sc->ds_limit = apm_ds_limit;
sc->cs_entry = apm_cs_entry;
#ifdef APM_DSVALUE_BUG
sc->ds_base = (u_int)apm_bios_work;
#endif /* APM_DSVALUE_BUG */
/* Always call HLT in idle loop */
sc->always_halt_cpu = 1;
@ -720,9 +731,11 @@ apmattach(struct isa_device *dvp)
printf("apm: CS_limit=%x, DS_limit=%x\n", sc->cs_limit, sc->ds_limit);
#endif /* APM_DEBUG */
#ifdef APM_DEBUG
/* Workaround for some buggy APM BIOS implementations */
sc->cs_limit = 0xffff;
sc->ds_limit = 0xffff;
#endif
/* setup GDT */
setup_apm_gdt(sc->cs32_base, sc->cs16_base, sc->ds_base,
@ -732,6 +745,15 @@ apmattach(struct isa_device *dvp)
apm_addr.segment = GSEL(GAPMCODE32_SEL, SEL_KPL);
apm_addr.offset = sc->cs_entry;
#ifdef FORCE_APM10
apm_version = 0x100;
sc->majorversion = 1;
sc->minorversion = 0;
sc->intversion = INTVERSION(sc->majorversion, sc->minorversion);
printf("apm: running in APM 1.0 compatible mode\n");
kcd_apm.kdc_description =
"Advanced Power Management BIOS (1.0 compatability mode)",
#else
/* Try to kick bios into 1.1 or greater mode */
apm_driver_version();
sc->minorversion = ((apm_version & 0x00f0) >> 4) * 10 +
@ -749,6 +771,8 @@ apmattach(struct isa_device *dvp)
printf("apm: found APM BIOS version %d.%d\n",
sc->majorversion, sc->minorversion);
#endif /* FORCE_APM10 */
#ifdef APM_DEBUG
printf("apm: Slow Idling CPU %s\n", is_enabled(sc->slow_idle_cpu));
#endif

26
sys/i386/bios/apm.c
View File

@ -14,7 +14,7 @@
*
* Sep, 1994 Implemented on FreeBSD 1.1.5.1R (Toshiba AVS001WD)
*
* $Id: apm.c,v 1.39 1996/04/22 19:40:18 nate Exp $
* $Id: apm.c,v 1.40 1996/04/23 16:02:45 nate Exp $
*/
#include "apm.h"
@ -688,6 +688,13 @@ apmattach(struct isa_device *dvp)
{
#define APM_KERNBASE KERNBASE
struct apm_softc *sc = &apm_softc;
#ifdef APM_DSVALUE_BUG
caddr_t apm_bios_work;
apm_bioswork = (caddr_t)malloc(apm_ds_limit, M_DEVBUG, M_NOWAIT);
bcopy((caddr_t)((apm_ds_base << 4) + APM_KERNBASE), apm_bios_work,
apm_ds_limit);
#endif /* APM_DSVALUE_BUG */
sc->initialized = 0;
@ -702,6 +709,10 @@ apmattach(struct isa_device *dvp)
sc->ds_limit = apm_ds_limit;
sc->cs_entry = apm_cs_entry;
#ifdef APM_DSVALUE_BUG
sc->ds_base = (u_int)apm_bios_work;
#endif /* APM_DSVALUE_BUG */
/* Always call HLT in idle loop */
sc->always_halt_cpu = 1;
@ -720,9 +731,11 @@ apmattach(struct isa_device *dvp)
printf("apm: CS_limit=%x, DS_limit=%x\n", sc->cs_limit, sc->ds_limit);
#endif /* APM_DEBUG */
#ifdef APM_DEBUG
/* Workaround for some buggy APM BIOS implementations */
sc->cs_limit = 0xffff;
sc->ds_limit = 0xffff;
#endif
/* setup GDT */
setup_apm_gdt(sc->cs32_base, sc->cs16_base, sc->ds_base,
@ -732,6 +745,15 @@ apmattach(struct isa_device *dvp)
apm_addr.segment = GSEL(GAPMCODE32_SEL, SEL_KPL);
apm_addr.offset = sc->cs_entry;
#ifdef FORCE_APM10
apm_version = 0x100;
sc->majorversion = 1;
sc->minorversion = 0;
sc->intversion = INTVERSION(sc->majorversion, sc->minorversion);
printf("apm: running in APM 1.0 compatible mode\n");
kcd_apm.kdc_description =
"Advanced Power Management BIOS (1.0 compatability mode)",
#else
/* Try to kick bios into 1.1 or greater mode */
apm_driver_version();
sc->minorversion = ((apm_version & 0x00f0) >> 4) * 10 +
@ -749,6 +771,8 @@ apmattach(struct isa_device *dvp)
printf("apm: found APM BIOS version %d.%d\n",
sc->majorversion, sc->minorversion);
#endif /* FORCE_APM10 */
#ifdef APM_DEBUG
printf("apm: Slow Idling CPU %s\n", is_enabled(sc->slow_idle_cpu));
#endif