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authorPeter Wemm <peter@FreeBSD.org>2004-09-24 00:42:36 +0000
committerPeter Wemm <peter@FreeBSD.org>2004-09-24 00:42:36 +0000
commitc3277f936c2472a67b1fa6210b8f09ddcc674744 (patch)
tree62ea625b75642fab67c77ed285a00becff5b43c0
parent6111dcd2ef680bf340dd15ea46bcc95aa443da0e (diff)
downloadsrc-c3277f936c2472a67b1fa6210b8f09ddcc674744.tar.gz
src-c3277f936c2472a67b1fa6210b8f09ddcc674744.zip
Severely strip down the repocopied i386/bios.c and bios.h files. It turns
out that bios_sigsearch() etc is useful for finding tables in roms.
Notes
Notes: svn path=/head/; revision=135689
-rw-r--r--sys/amd64/amd64/bios.c593
-rw-r--r--sys/amd64/include/pc/bios.h233
2 files changed, 3 insertions, 823 deletions
diff --git a/sys/amd64/amd64/bios.c b/sys/amd64/amd64/bios.c
index 3bee94fdd5df..b34da4d83d05 100644
--- a/sys/amd64/amd64/bios.c
+++ b/sys/amd64/amd64/bios.c
@@ -29,164 +29,19 @@
__FBSDID("$FreeBSD$");
/*
- * Code for dealing with the BIOS in x86 PC systems.
+ * Subset of the i386 bios support code. We cannot make bios16 nor bios32
+ * calls, so we can leave that out. However, searching for bios rom
+ * signatures can be useful for locating tables, eg: powernow settings.
*/
-#include "opt_isa.h"
-
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
-#include <sys/malloc.h>
-#include <sys/module.h>
-#include <sys/bus.h>
-#include <sys/pcpu.h>
-#include <vm/vm.h>
-#include <vm/pmap.h>
-#include <machine/md_var.h>
-#include <machine/segments.h>
-#include <machine/stdarg.h>
-#include <machine/vmparam.h>
#include <machine/pc/bios.h>
-#ifdef DEV_ISA
-#include <isa/isavar.h>
-#include <isa/pnpreg.h>
-#include <isa/pnpvar.h>
-#endif
#define BIOS_START 0xe0000
#define BIOS_SIZE 0x20000
-/* exported lookup results */
-struct bios32_SDentry PCIbios;
-
-static struct PnPBIOS_table *PnPBIOStable;
-
-static u_int bios32_SDCI;
-
-/* start fairly early */
-static void bios32_init(void *junk);
-SYSINIT(bios32, SI_SUB_CPU, SI_ORDER_ANY, bios32_init, NULL);
-
-/*
- * bios32_init
- *
- * Locate various bios32 entities.
- */
-static void
-bios32_init(void *junk)
-{
- u_long sigaddr;
- struct bios32_SDheader *sdh;
- struct PnPBIOS_table *pt;
- u_int8_t ck, *cv;
- int i;
- char *p;
-
- /*
- * BIOS32 Service Directory, PCI BIOS
- */
-
- /* look for the signature */
- if ((sigaddr = bios_sigsearch(0, "_32_", 4, 16, 0)) != 0) {
-
- /* get a virtual pointer to the structure */
- sdh = (struct bios32_SDheader *)(uintptr_t)BIOS_PADDRTOVADDR(sigaddr);
- for (cv = (u_int8_t *)sdh, ck = 0, i = 0; i < (sdh->len * 16); i++) {
- ck += cv[i];
- }
- /* If checksum is OK, enable use of the entrypoint */
- if ((ck == 0) && (BIOS_START <= sdh->entry ) &&
- (sdh->entry < (BIOS_START + BIOS_SIZE))) {
- bios32_SDCI = BIOS_PADDRTOVADDR(sdh->entry);
- if (bootverbose) {
- printf("bios32: Found BIOS32 Service Directory header at %p\n", sdh);
- printf("bios32: Entry = 0x%x (%x) Rev = %d Len = %d\n",
- sdh->entry, bios32_SDCI, sdh->revision, sdh->len);
- }
-
- /* Allow user override of PCI BIOS search */
- if (((p = getenv("machdep.bios.pci")) == NULL) || strcmp(p, "disable")) {
-
- /* See if there's a PCI BIOS entrypoint here */
- PCIbios.ident.id = 0x49435024; /* PCI systems should have this */
- if (!bios32_SDlookup(&PCIbios) && bootverbose)
- printf("pcibios: PCI BIOS entry at 0x%x+0x%x\n", PCIbios.base, PCIbios.entry);
- }
- if (p != NULL)
- freeenv(p);
- } else {
- printf("bios32: Bad BIOS32 Service Directory\n");
- }
- }
-
- /*
- * PnP BIOS
- *
- * Allow user override of PnP BIOS search
- */
- if ((((p = getenv("machdep.bios.pnp")) == NULL) || strcmp(p, "disable")) &&
- ((sigaddr = bios_sigsearch(0, "$PnP", 4, 16, 0)) != 0)) {
-
- /* get a virtual pointer to the structure */
- pt = (struct PnPBIOS_table *)(uintptr_t)BIOS_PADDRTOVADDR(sigaddr);
- for (cv = (u_int8_t *)pt, ck = 0, i = 0; i < pt->len; i++) {
- ck += cv[i];
- }
- /* If checksum is OK, enable use of the entrypoint */
- if (ck == 0) {
- PnPBIOStable = pt;
- if (bootverbose) {
- printf("pnpbios: Found PnP BIOS data at %p\n", pt);
- printf("pnpbios: Entry = %x:%x Rev = %d.%d\n",
- pt->pmentrybase, pt->pmentryoffset, pt->version >> 4, pt->version & 0xf);
- if ((pt->control & 0x3) == 0x01)
- printf("pnpbios: Event flag at %x\n", pt->evflagaddr);
- if (pt->oemdevid != 0)
- printf("pnpbios: OEM ID %x\n", pt->oemdevid);
-
- }
- } else {
- printf("pnpbios: Bad PnP BIOS data checksum\n");
- }
- }
- if (p != NULL)
- freeenv(p);
- if (bootverbose) {
- /* look for other know signatures */
- printf("Other BIOS signatures found:\n");
- }
-}
-
-/*
- * bios32_SDlookup
- *
- * Query the BIOS32 Service Directory for the service named in (ent),
- * returns nonzero if the lookup fails. The caller must fill in
- * (ent->ident), the remainder are populated on a successful lookup.
- */
-int
-bios32_SDlookup(struct bios32_SDentry *ent)
-{
- struct bios_regs args;
-
- if (bios32_SDCI == 0)
- return (1);
-
- args.eax = ent->ident.id; /* set up arguments */
- args.ebx = args.ecx = args.edx = 0;
- bios32(&args, bios32_SDCI, GSEL(GCODE_SEL, SEL_KPL));
- if ((args.eax & 0xff) == 0) { /* success? */
- ent->base = args.ebx;
- ent->len = args.ecx;
- ent->entry = args.edx;
- ent->ventry = BIOS_PADDRTOVADDR(ent->base + ent->entry);
- return (0); /* all OK */
- }
- return (1); /* failed */
-}
-
-
/*
* bios_sigsearch
*
@@ -236,245 +91,6 @@ bios_sigsearch(u_int32_t start, u_char *sig, int siglen, int paralen, int sigofs
return(0);
}
-/*
- * do not staticize, used by bioscall.s
- */
-union {
- struct {
- u_short offset;
- u_short segment;
- } vec16;
- struct {
- u_int offset;
- u_short segment;
- } vec32;
-} bioscall_vector; /* bios jump vector */
-
-void
-set_bios_selectors(struct bios_segments *seg, int flags)
-{
- struct soft_segment_descriptor ssd = {
- 0, /* segment base address (overwritten) */
- 0, /* length (overwritten) */
- SDT_MEMERA, /* segment type (overwritten) */
- 0, /* priority level */
- 1, /* descriptor present */
- 0, 0,
- 1, /* descriptor size (overwritten) */
- 0 /* granularity == byte units */
- };
- union descriptor *p_gdt;
-
-#ifdef SMP
- p_gdt = &gdt[PCPU_GET(cpuid) * NGDT];
-#else
- p_gdt = gdt;
-#endif
-
- ssd.ssd_base = seg->code32.base;
- ssd.ssd_limit = seg->code32.limit;
- ssdtosd(&ssd, &p_gdt[GBIOSCODE32_SEL].sd);
-
- ssd.ssd_def32 = 0;
- if (flags & BIOSCODE_FLAG) {
- ssd.ssd_base = seg->code16.base;
- ssd.ssd_limit = seg->code16.limit;
- ssdtosd(&ssd, &p_gdt[GBIOSCODE16_SEL].sd);
- }
-
- ssd.ssd_type = SDT_MEMRWA;
- if (flags & BIOSDATA_FLAG) {
- ssd.ssd_base = seg->data.base;
- ssd.ssd_limit = seg->data.limit;
- ssdtosd(&ssd, &p_gdt[GBIOSDATA_SEL].sd);
- }
-
- if (flags & BIOSUTIL_FLAG) {
- ssd.ssd_base = seg->util.base;
- ssd.ssd_limit = seg->util.limit;
- ssdtosd(&ssd, &p_gdt[GBIOSUTIL_SEL].sd);
- }
-
- if (flags & BIOSARGS_FLAG) {
- ssd.ssd_base = seg->args.base;
- ssd.ssd_limit = seg->args.limit;
- ssdtosd(&ssd, &p_gdt[GBIOSARGS_SEL].sd);
- }
-}
-
-extern int vm86pa;
-extern void bios16_jmp(void);
-
-/*
- * this routine is really greedy with selectors, and uses 5:
- *
- * 32-bit code selector: to return to kernel
- * 16-bit code selector: for running code
- * data selector: for 16-bit data
- * util selector: extra utility selector
- * args selector: to handle pointers
- *
- * the util selector is set from the util16 entry in bios16_args, if a
- * "U" specifier is seen.
- *
- * See <machine/pc/bios.h> for description of format specifiers
- */
-int
-bios16(struct bios_args *args, char *fmt, ...)
-{
- char *p, *stack, *stack_top;
- va_list ap;
- int flags = BIOSCODE_FLAG | BIOSDATA_FLAG;
- u_int i, arg_start, arg_end;
- pt_entry_t *pte;
- pd_entry_t *ptd;
-
- arg_start = 0xffffffff;
- arg_end = 0;
-
- /*
- * Some BIOS entrypoints attempt to copy the largest-case
- * argument frame (in order to generalise handling for
- * different entry types). If our argument frame is
- * smaller than this, the BIOS will reach off the top of
- * our constructed stack segment. Pad the top of the stack
- * with some garbage to avoid this.
- */
- stack = (caddr_t)PAGE_SIZE - 32;
-
- va_start(ap, fmt);
- for (p = fmt; p && *p; p++) {
- switch (*p) {
- case 'p': /* 32-bit pointer */
- i = va_arg(ap, u_int);
- arg_start = min(arg_start, i);
- arg_end = max(arg_end, i);
- flags |= BIOSARGS_FLAG;
- stack -= 4;
- break;
-
- case 'i': /* 32-bit integer */
- i = va_arg(ap, u_int);
- stack -= 4;
- break;
-
- case 'U': /* 16-bit selector */
- flags |= BIOSUTIL_FLAG;
- /* FALLTHROUGH */
- case 'D': /* 16-bit selector */
- case 'C': /* 16-bit selector */
- stack -= 2;
- break;
-
- case 's': /* 16-bit integer passed as an int */
- i = va_arg(ap, int);
- stack -= 2;
- break;
-
- default:
- return (EINVAL);
- }
- }
-
- if (flags & BIOSARGS_FLAG) {
- if (arg_end - arg_start > ctob(16))
- return (EACCES);
- args->seg.args.base = arg_start;
- args->seg.args.limit = 0xffff;
- }
-
- args->seg.code32.base = (u_int)&bios16_jmp & PG_FRAME;
- args->seg.code32.limit = 0xffff;
-
- ptd = (pd_entry_t *)rcr3();
-#ifdef PAE
- if (ptd == IdlePDPT)
-#else
- if (ptd == IdlePTD)
-#endif
- {
- /*
- * no page table, so create one and install it.
- */
- pte = (pt_entry_t *)malloc(PAGE_SIZE, M_TEMP, M_WAITOK);
- ptd = (pd_entry_t *)((u_int)IdlePTD + KERNBASE);
- *pte = (vm86pa - PAGE_SIZE) | PG_RW | PG_V;
- *ptd = vtophys(pte) | PG_RW | PG_V;
- } else {
- /*
- * this is a user-level page table
- */
- pte = PTmap;
- *pte = (vm86pa - PAGE_SIZE) | PG_RW | PG_V;
- }
- pmap_invalidate_all(kernel_pmap); /* XXX insurance for now */
-
- stack_top = stack;
- va_start(ap, fmt);
- for (p = fmt; p && *p; p++) {
- switch (*p) {
- case 'p': /* 32-bit pointer */
- i = va_arg(ap, u_int);
- *(u_int *)stack = (i - arg_start) |
- (GSEL(GBIOSARGS_SEL, SEL_KPL) << 16);
- stack += 4;
- break;
-
- case 'i': /* 32-bit integer */
- i = va_arg(ap, u_int);
- *(u_int *)stack = i;
- stack += 4;
- break;
-
- case 'U': /* 16-bit selector */
- *(u_short *)stack = GSEL(GBIOSUTIL_SEL, SEL_KPL);
- stack += 2;
- break;
-
- case 'D': /* 16-bit selector */
- *(u_short *)stack = GSEL(GBIOSDATA_SEL, SEL_KPL);
- stack += 2;
- break;
-
- case 'C': /* 16-bit selector */
- *(u_short *)stack = GSEL(GBIOSCODE16_SEL, SEL_KPL);
- stack += 2;
- break;
-
- case 's': /* 16-bit integer passed as an int */
- i = va_arg(ap, int);
- *(u_short *)stack = i;
- stack += 2;
- break;
-
- default:
- return (EINVAL);
- }
- }
-
- set_bios_selectors(&args->seg, flags);
- bioscall_vector.vec16.offset = (u_short)args->entry;
- bioscall_vector.vec16.segment = GSEL(GBIOSCODE16_SEL, SEL_KPL);
-
- i = bios16_call(&args->r, stack_top);
-
- if (pte == PTmap) {
- *pte = 0; /* remove entry */
- /*
- * XXX only needs to be invlpg(0) but that doesn't work on the 386
- */
- pmap_invalidate_all(kernel_pmap);
- } else {
- *ptd = 0; /* remove page table */
- /*
- * XXX only needs to be invlpg(0) but that doesn't work on the 386
- */
- pmap_invalidate_all(kernel_pmap);
- free(pte, M_TEMP); /* ... and free it */
- }
- return (i);
-}
-
const u_char *
bios_string(u_int from, u_int to, const u_char *string, int len)
{
@@ -489,206 +105,3 @@ bios_string(u_int from, u_int to, const u_char *string, int len)
return (t);
return (NULL);
}
-
-#ifdef DEV_ISA
-/*
- * PnP BIOS interface; enumerate devices only known to the system
- * BIOS and save information about them for later use.
- */
-
-struct pnp_sysdev
-{
- u_int16_t size;
- u_int8_t handle;
- u_int32_t devid;
- u_int8_t type[3];
- u_int16_t attrib;
-#define PNPATTR_NODISABLE (1<<0) /* can't be disabled */
-#define PNPATTR_NOCONFIG (1<<1) /* can't be configured */
-#define PNPATTR_OUTPUT (1<<2) /* can be primary output */
-#define PNPATTR_INPUT (1<<3) /* can be primary input */
-#define PNPATTR_BOOTABLE (1<<4) /* can be booted from */
-#define PNPATTR_DOCK (1<<5) /* is a docking station */
-#define PNPATTR_REMOVEABLE (1<<6) /* device is removeable */
-#define PNPATTR_CONFIG_STATIC (0)
-#define PNPATTR_CONFIG_DYNAMIC (1)
-#define PNPATTR_CONFIG_DYNONLY (3)
-#define PNPATTR_CONFIG(a) (((a) >> 7) & 0x3)
- /* device-specific data comes here */
- u_int8_t devdata[0];
-} __packed;
-
-/* We have to cluster arguments within a 64k range for the bios16 call */
-struct pnp_sysdevargs
-{
- u_int16_t next;
- struct pnp_sysdev node;
-};
-
-/*
- * This function is called after the bus has assigned resource
- * locations for a logical device.
- */
-static void
-pnpbios_set_config(void *arg, struct isa_config *config, int enable)
-{
-}
-
-/*
- * Quiz the PnP BIOS, build a list of PNP IDs and resource data.
- */
-static void
-pnpbios_identify(driver_t *driver, device_t parent)
-{
- struct PnPBIOS_table *pt = PnPBIOStable;
- struct bios_args args;
- struct pnp_sysdev *pd;
- struct pnp_sysdevargs *pda;
- u_int16_t ndevs, bigdev;
- int error, currdev;
- u_int8_t *devnodebuf, tag;
- u_int32_t *devid, *compid;
- int idx, left;
- device_t dev;
-
- /* no PnP BIOS information */
- if (pt == NULL)
- return;
-
- /* Check to see if ACPI is already active. */
- dev = devclass_get_device(devclass_find("acpi"), 0);
- if (dev != NULL && device_is_attached(dev))
- return;
-
- /* get count of PnP devices */
- bzero(&args, sizeof(args));
- args.seg.code16.base = BIOS_PADDRTOVADDR(pt->pmentrybase);
- args.seg.code16.limit = 0xffff; /* XXX ? */
- args.seg.data.base = BIOS_PADDRTOVADDR(pt->pmdataseg);
- args.seg.data.limit = 0xffff;
- args.entry = pt->pmentryoffset;
-
- if ((error = bios16(&args, PNP_COUNT_DEVNODES, &ndevs, &bigdev)) || (args.r.eax & 0xff))
- printf("pnpbios: error %d/%x getting device count/size limit\n", error, args.r.eax);
- ndevs &= 0xff; /* clear high byte garbage */
- if (bootverbose)
- printf("pnpbios: %d devices, largest %d bytes\n", ndevs, bigdev);
-
- devnodebuf = malloc(bigdev + (sizeof(struct pnp_sysdevargs) - sizeof(struct pnp_sysdev)),
- M_DEVBUF, M_NOWAIT);
- pda = (struct pnp_sysdevargs *)devnodebuf;
- pd = &pda->node;
-
- for (currdev = 0, left = ndevs; (currdev != 0xff) && (left > 0); left--) {
-
- bzero(pd, bigdev);
- pda->next = currdev;
- /* get current configuration */
- if ((error = bios16(&args, PNP_GET_DEVNODE, &pda->next, &pda->node, 1))) {
- printf("pnpbios: error %d making BIOS16 call\n", error);
- break;
- }
- if ((error = (args.r.eax & 0xff))) {
- if (bootverbose)
- printf("pnpbios: %s 0x%x fetching node %d\n", error & 0x80 ? "error" : "warning", error, currdev);
- if (error & 0x80)
- break;
- }
- currdev = pda->next;
- if (pd->size < sizeof(struct pnp_sysdev)) {
- printf("pnpbios: bogus system node data, aborting scan\n");
- break;
- }
-
- /*
- * Ignore PICs so that we don't have to worry about the PICs
- * claiming IRQs to prevent their use. The PIC drivers
- * already ensure that invalid IRQs are not used.
- */
- if (!strcmp(pnp_eisaformat(pd->devid), "PNP0000")) /* ISA PIC */
- continue;
- if (!strcmp(pnp_eisaformat(pd->devid), "PNP0003")) /* APIC */
- continue;
-
- /* Add the device and parse its resources */
- dev = BUS_ADD_CHILD(parent, ISA_ORDER_PNP, NULL, -1);
- isa_set_vendorid(dev, pd->devid);
- isa_set_logicalid(dev, pd->devid);
- /*
- * It appears that some PnP BIOS doesn't allow us to re-enable
- * the embedded system device once it is disabled. We shall
- * mark all system device nodes as "cannot be disabled", regardless
- * of actual settings in the device attribute byte.
- * XXX
- isa_set_configattr(dev,
- ((pd->attrib & PNPATTR_NODISABLE) ? 0 : ISACFGATTR_CANDISABLE) |
- ((!(pd->attrib & PNPATTR_NOCONFIG) &&
- PNPATTR_CONFIG(pd->attrib) != PNPATTR_CONFIG_STATIC)
- ? ISACFGATTR_DYNAMIC : 0));
- */
- isa_set_configattr(dev,
- (!(pd->attrib & PNPATTR_NOCONFIG) &&
- PNPATTR_CONFIG(pd->attrib) != PNPATTR_CONFIG_STATIC)
- ? ISACFGATTR_DYNAMIC : 0);
- ISA_SET_CONFIG_CALLBACK(parent, dev, pnpbios_set_config, 0);
- pnp_parse_resources(dev, &pd->devdata[0],
- pd->size - sizeof(struct pnp_sysdev), 0);
- if (!device_get_desc(dev))
- device_set_desc_copy(dev, pnp_eisaformat(pd->devid));
-
- /* Find device IDs */
- devid = &pd->devid;
- compid = NULL;
-
- /* look for a compatible device ID too */
- left = pd->size - sizeof(struct pnp_sysdev);
- idx = 0;
- while (idx < left) {
- tag = pd->devdata[idx++];
- if (PNP_RES_TYPE(tag) == 0) {
- /* Small resource */
- switch (PNP_SRES_NUM(tag)) {
- case PNP_TAG_COMPAT_DEVICE:
- compid = (u_int32_t *)(pd->devdata + idx);
- if (bootverbose)
- printf("pnpbios: node %d compat ID 0x%08x\n", pd->handle, *compid);
- /* FALLTHROUGH */
- case PNP_TAG_END:
- idx = left;
- break;
- default:
- idx += PNP_SRES_LEN(tag);
- break;
- }
- } else
- /* Large resource, skip it */
- idx += *(u_int16_t *)(pd->devdata + idx) + 2;
- }
- if (bootverbose) {
- printf("pnpbios: handle %d device ID %s (%08x)",
- pd->handle, pnp_eisaformat(*devid), *devid);
- if (compid != NULL)
- printf(" compat ID %s (%08x)",
- pnp_eisaformat(*compid), *compid);
- printf("\n");
- }
- }
-}
-
-static device_method_t pnpbios_methods[] = {
- /* Device interface */
- DEVMETHOD(device_identify, pnpbios_identify),
-
- { 0, 0 }
-};
-
-static driver_t pnpbios_driver = {
- "pnpbios",
- pnpbios_methods,
- 1, /* no softc */
-};
-
-static devclass_t pnpbios_devclass;
-
-DRIVER_MODULE(pnpbios, isa, pnpbios_driver, pnpbios_devclass, 0, 0);
-#endif /* DEV_ISA */
diff --git a/sys/amd64/include/pc/bios.h b/sys/amd64/include/pc/bios.h
index c7362a964080..87279727afec 100644
--- a/sys/amd64/include/pc/bios.h
+++ b/sys/amd64/include/pc/bios.h
@@ -30,245 +30,12 @@
#ifndef _MACHINE_PC_BIOS_H_
#define _MACHINE_PC_BIOS_H_
-/*
- * Signature structure for the BIOS32 Service Directory header
- */
-struct bios32_SDheader
-{
- u_int8_t sig[4];
- u_int32_t entry;
- u_int8_t revision;
- u_int8_t len;
- u_int8_t cksum;
- u_int8_t pad[5];
-};
-
-/*
- * BIOS32 Service Directory entry. Caller supplies name, bios32_SDlookup
- * fills in the rest of the details.
- */
-struct bios32_SDentry
-{
- union
- {
- u_int8_t name[4]; /* service identifier */
- u_int32_t id; /* as a 32-bit value */
- } ident;
- u_int32_t base; /* base of service */
- u_int32_t len; /* service length */
- u_int32_t entry; /* entrypoint offset from base */
- vm_offset_t ventry; /* entrypoint in kernel virtual segment */
-};
-
-extern int bios32_SDlookup(struct bios32_SDentry *ent);
extern u_int32_t bios_sigsearch(u_int32_t start, u_char *sig, int siglen,
int paralen, int sigofs);
#define BIOS_PADDRTOVADDR(x) ((x) + KERNBASE)
#define BIOS_VADDRTOPADDR(x) ((x) - KERNBASE)
-
-/*
- * PnP BIOS presence structure
- */
-struct PnPBIOS_table
-{
- u_int8_t sig[4]; /* "$PnP */
- u_int8_t version; /* should be 0x10 */
- u_int8_t len; /* total structure length */
- u_int16_t control; /* BIOS feature flags */
- u_int8_t cksum; /* checksum */
- u_int32_t evflagaddr; /* address of event notificaton flag */
- u_int16_t rmentryoffset; /* real-mode entry offset */
- u_int16_t rmentryseg; /* segment */
- u_int16_t pmentryoffset; /* protected-mode entry offset */
- u_int32_t pmentrybase; /* segment base */
- u_int32_t oemdevid; /* motherboard EISA ID */
- u_int16_t rmbiosseg; /* real-mode BIOS segment */
- u_int32_t pmdataseg; /* protected-mode data segment */
-} __packed;
-
-
-/*
- * Exported lookup results
- */
-extern struct bios32_SDentry PCIbios;
-
-struct segment_info {
- u_int base;
- u_int limit;
-};
-
-#define BIOSCODE_FLAG 0x01
-#define BIOSDATA_FLAG 0x02
-#define BIOSUTIL_FLAG 0x04
-#define BIOSARGS_FLAG 0x08
-
-struct bios_segments {
- struct segment_info code32; /* 32-bit code (mandatory) */
- struct segment_info code16; /* 16-bit code */
- struct segment_info data; /* 16-bit data */
- struct segment_info util; /* 16-bit utility */
- struct segment_info args; /* 16-bit args */
-};
-
-struct bios_regs {
- u_int eax;
- u_int ebx;
- u_int ecx;
- u_int edx;
- u_int esi;
- u_int edi;
-};
-
-struct bios_args {
- u_int entry; /* entry point of routine */
- struct bios_regs r;
- struct bios_segments seg;
-};
-
-/*
- * PnP BIOS return codes
- */
-#define PNP_SUCCESS 0x00
-#define PNP_NOT_SET_STATICALLY 0x7f
-#define PNP_UNKNOWN_FUNCTION 0x81
-#define PNP_FUNTION_NOT_SUPPORTED 0x82
-#define PNP_INVALID_HANDLE 0x83
-#define PNP_BAD_PARAMETER 0x84
-#define PNP_SET_FAILED 0x85
-#define PNP_EVENTS_NOT_PENDING 0x86
-#define PNP_SYSTEM_NOT_DOCKED 0x87
-#define PNP_NO_ISA_PNP_CARDS 0x88
-#define PNP_UNABLE_TO_DETERMINE_DOCK_CAPABILITIES 0x89
-#define PNP_CONFIG_CHANGE_FAILED_NO_BATTERY 0x8a
-#define PNP_CONFIG_CHANGE_FAILED_RESOURCE_CONFLICT 0x8b
-#define PNP_BUFFER_TOO_SMALL 0x8c
-#define PNP_USE_ESCD_SUPPORT 0x8d
-#define PNP_MESSAGE_NOT_SUPPORTED 0x8e
-#define PNP_HARDWARE_ERROR 0x8f
-
-/*
- * DMI return codes
- */
-#define DMI_SUCCESS 0x00
-#define DMI_UNKNOWN_FUNCTION 0x81
-#define DMI_FUNCTION_NOT_SUPPORTED 0x82
-#define DMI_INVALID_HANDLE 0x83
-#define DMI_BAD_PARAMETER 0x84
-#define DMI_INVALID_SUBFUNCTION 0x85
-#define DMI_NO_CHANGE 0x86
-#define DMI_ADD_STRUCTURE_FAILED 0x87
-#define DMI_READ_ONLY 0x8d
-#define DMI_LOCK_NOT_SUPPORTED 0x90
-#define DMI_CURRENTLY_LOCKED 0x91
-#define DMI_INVALID_LOCK 0x92
-
-/*
- * format specifiers and defines for bios16()
- * s = short (16 bits)
- * i = int (32 bits)
- * p = pointer (converted to seg:offset)
- * C,D,U = selector (corresponding to code/data/utility segment)
- */
-#define PNP_COUNT_DEVNODES "sppD", 0x00
-#define PNP_GET_DEVNODE "sppsD", 0x01
-#define PNP_SET_DEVNODE "sspsD", 0x02
-#define PNP_GET_EVENT "spD", 0x03
-#define PNP_SEND_MSG "ssD", 0x04
-#define PNP_GET_DOCK_INFO "spD", 0x05
-
-#define PNP_SEL_PRIBOOT "ssiiisspD", 0x07
-#define PNP_GET_PRIBOOT "sspppppD", 0x08
-#define PNP_SET_RESINFO "spD", 0x09
-#define PNP_GET_RESINFO "spD", 0x0A
-#define PNP_GET_APM_ID "sppD", 0x0B
-
-#define PNP_GET_ISA_INFO "spD", 0x40
-#define PNP_GET_ECSD_INFO "spppD", 0x41
-#define PNP_READ_ESCD "spUD", 0x42
-#define PNP_WRITE_ESCD "spUD", 0x43
-
-#define PNP_GET_DMI_INFO "spppppD", 0x50
-#define PNP_GET_DMI_STRUCTURE "sppUD", 0x51
-#define PNP_SET_DMI_STRUCTURE "sppsUD" 0x52
-#define PNP_GET_DMI_CHANGE "spUD" 0x53
-#define PNP_DMI_CONTROL "sspsUD" 0x54
-#define PNP_GET_GPNV_INFO "sppppD" 0x55
-#define PNP_READ_GPNV_DATA "ssppUD" 0x56
-#define PNP_WRITE_GPNV_DATA "sspsUD" 0x57
-
-#define PNP_BOOT_CHECK "sp", 0x60
-#define PNP_COUNT_IPL "sppp", 0x61
-#define PNP_GET_BOOTPRI "spp", 0x62
-#define PNP_SET_BOOTPRI "sp", 0x63
-#define PNP_GET_LASTBOOT "sp", 0x64
-#define PNP_GET_BOOTFIRST "sp", 0x65
-#define PNP_SET_BOOTFIRST "sp", 0x66
-
-/*
- * PCI BIOS functions
- */
-#define PCIBIOS_BIOS_PRESENT 0xb101
-#define PCIBIOS_READ_CONFIG_BYTE 0xb108
-#define PCIBIOS_READ_CONFIG_WORD 0xb109
-#define PCIBIOS_READ_CONFIG_DWORD 0xb10a
-#define PCIBIOS_WRITE_CONFIG_BYTE 0xb10b
-#define PCIBIOS_WRITE_CONFIG_WORD 0xb10c
-#define PCIBIOS_WRITE_CONFIG_DWORD 0xb10d
-#define PCIBIOS_GET_IRQ_ROUTING 0xb10e
-#define PCIBIOS_ROUTE_INTERRUPT 0xb10f
-
-extern int bios16(struct bios_args *, char *, ...);
-extern int bios16_call(struct bios_regs *, char *);
-extern int bios32(struct bios_regs *, u_int, u_short);
-extern void set_bios_selectors(struct bios_segments *, int);
-
-/*
- * PCI interrupt routing table.
- *
- * $PIR in the BIOS segment contains a PIR_table
- * int 1a:b106 returns PIR_table in buffer at es:(e)di
- * int 1a:b18e returns PIR_table in buffer at es:(e)di
- * int 1a:b406 returns es:di pointing to the BIOS PIR_table
- */
-struct PIR_header
-{
- int8_t ph_signature[4];
- u_int16_t ph_version;
- u_int16_t ph_length;
- u_int8_t ph_router_bus;
- u_int8_t ph_router_dev_fn;
- u_int16_t ph_pci_irqs;
- u_int16_t ph_router_vendor;
- u_int16_t ph_router_device;
- u_int32_t ph_miniport;
- u_int8_t ph_res[11];
- u_int8_t ph_checksum;
-} __packed;
-
-struct PIR_intpin
-{
- u_int8_t link;
- u_int16_t irqs;
-} __packed;
-
-struct PIR_entry
-{
- u_int8_t pe_bus;
- u_int8_t pe_res1:3;
- u_int8_t pe_device:5;
- struct PIR_intpin pe_intpin[4];
- u_int8_t pe_slot;
- u_int8_t pe_res3;
-} __packed;
-
-struct PIR_table
-{
- struct PIR_header pt_header;
- struct PIR_entry pt_entry[0];
-} __packed;
-
/*
* Int 15:E820 'SMAP' structure
*