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-rw-r--r--usr.sbin/sysinstall/biosmptable.c275
1 files changed, 0 insertions, 275 deletions
diff --git a/usr.sbin/sysinstall/biosmptable.c b/usr.sbin/sysinstall/biosmptable.c
deleted file mode 100644
index 5a507bd..0000000
--- a/usr.sbin/sysinstall/biosmptable.c
+++ /dev/null
@@ -1,275 +0,0 @@
-/*-
- * Copyright (c) 2005 Sandvine Incorporated. All righs reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * Author: Ed Maste <emaste@phaedrus.sandvine.ca>
- */
-
-/*
- * This module detects Intel Multiprocessor spec info (mptable) and returns
- * the number of cpu's identified.
- */
-
-#include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
-
-#include <sys/types.h>
-#include <machine/mptable.h>
-
-#include <err.h>
-#include <fcntl.h>
-#include <inttypes.h>
-#include <paths.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-#include "sysinstall.h"
-
-#define MPFPS_SIG "_MP_"
-#define MPCTH_SIG "PCMP"
-
-#define PTOV(pa) ((off_t)(pa))
-
-static mpfps_t biosmptable_find_mpfps(void);
-static mpfps_t biosmptable_search_mpfps(off_t base, int length);
-static mpcth_t biosmptable_check_mpcth(off_t addr);
-
-static int memopen(void);
-static void memclose(void);
-
-int
-biosmptable_detect(void)
-{
- mpfps_t mpfps;
- mpcth_t mpcth;
- char *entry_type_p;
- proc_entry_ptr proc;
- int ncpu, i;
-
- if (!memopen())
- return -1; /* XXX 0? */
- /* locate and validate the mpfps */
- mpfps = biosmptable_find_mpfps();
- mpcth = NULL;
- if (mpfps == NULL) {
- ncpu = 0;
- } else if (mpfps->config_type != 0) {
- /*
- * If thie config_type is nonzero then this is a default configuration
- * from Chapter 5 in the MP spec. Report 2 cpus and 1 I/O APIC.
- */
- ncpu = 2;
- } else {
- ncpu = 0;
- mpcth = biosmptable_check_mpcth(PTOV(mpfps->pap));
- if (mpcth != NULL) {
- entry_type_p = (char *)(mpcth + 1);
- for (i = 0; i < mpcth->entry_count; i++) {
- switch (*entry_type_p) {
- case 0:
- entry_type_p += sizeof(struct PROCENTRY);
- proc = (proc_entry_ptr) entry_type_p;
- msgDebug("MPTable: Found CPU APIC ID %d %s\n",
- proc->apic_id,
- proc->cpu_flags & PROCENTRY_FLAG_EN ?
- "enabled" : "disabled");
- if (proc->cpu_flags & PROCENTRY_FLAG_EN)
- ncpu++;
- break;
- case 1:
- entry_type_p += sizeof(struct BUSENTRY);
- break;
- case 2:
- entry_type_p += sizeof(struct IOAPICENTRY);
- break;
- case 3:
- case 4:
- entry_type_p += sizeof(struct INTENTRY);
- break;
- default:
- msgDebug("%s: unknown mptable entry type (%d)\n",
- __func__, *entry_type_p);
- goto done; /* XXX error return? */
- }
- }
- done:
- ;
- }
- }
- memclose();
- if (mpcth != NULL)
- free(mpcth);
- if (mpfps != NULL)
- free(mpfps);
-
- return ncpu;
-}
-
-static int pfd = -1;
-
-static int
-memopen(void)
-{
- if (pfd < 0) {
- pfd = open(_PATH_MEM, O_RDONLY);
- if (pfd < 0)
- warn("%s: cannot open", _PATH_MEM);
- }
- return pfd >= 0;
-}
-
-static void
-memclose(void)
-{
- if (pfd >= 0) {
- close(pfd);
- pfd = -1;
- }
-}
-
-static int
-memread(off_t addr, void* entry, size_t size)
-{
- if ((size_t)pread(pfd, entry, size, addr) != size) {
- warn("pread (%zu @ 0x%llx)", size, addr);
- return 0;
- }
- return 1;
-}
-
-
-/*
- * Find the MP Floating Pointer Structure. See the MP spec section 4.1.
- */
-static mpfps_t
-biosmptable_find_mpfps(void)
-{
- mpfps_t mpfps;
- uint16_t addr;
-
- /* EBDA is the 1 KB addressed by the 16 bit pointer at 0x40E. */
- if (!memread(PTOV(0x40E), &addr, sizeof(addr)))
- return (NULL);
- mpfps = biosmptable_search_mpfps(PTOV(addr << 4), 0x400);
- if (mpfps != NULL)
- return (mpfps);
-
- /* Check the BIOS. */
- mpfps = biosmptable_search_mpfps(PTOV(0xf0000), 0x10000);
- if (mpfps != NULL)
- return (mpfps);
-
- return (NULL);
-}
-
-static mpfps_t
-biosmptable_search_mpfps(off_t base, int length)
-{
- mpfps_t mpfps;
- u_int8_t *cp, sum;
- int ofs, idx;
-
- mpfps = malloc(sizeof(*mpfps));
- if (mpfps == NULL) {
- msgDebug("%s: unable to malloc space for "
- "MP Floating Pointer Structure\n", __func__);
- return (NULL);
- }
- /* search on 16-byte boundaries */
- for (ofs = 0; ofs < length; ofs += 16) {
- if (!memread(base + ofs, mpfps, sizeof(*mpfps)))
- break;
-
- /* compare signature, validate checksum */
- if (!strncmp(mpfps->signature, MPFPS_SIG, strlen(MPFPS_SIG))) {
- cp = (u_int8_t *)mpfps;
- sum = 0;
- /* mpfps is 16 bytes, or one "paragraph" */
- if (mpfps->length != 1) {
- msgDebug("%s: bad mpfps length (%d)\n",
- __func__, mpfps->length);
- continue;
- }
- for (idx = 0; idx < mpfps->length * 16; idx++)
- sum += *(cp + idx);
- if (sum != 0) {
- msgDebug("%s: bad mpfps checksum (%d)\n", __func__, sum);
- continue;
- }
- return (mpfps);
- }
- }
- free(mpfps);
- return (NULL);
-}
-
-static mpcth_t
-biosmptable_check_mpcth(off_t addr)
-{
- mpcth_t mpcth;
- u_int8_t *cp, sum;
- int idx, table_length;
-
- /* mpcth must be in the first 1MB */
- if ((u_int32_t)addr >= 1024 * 1024) {
- msgDebug("%s: bad mpcth address (0x%llx)\n", __func__, addr);
- return (NULL);
- }
-
- mpcth = malloc(sizeof(*mpcth));
- if (mpcth == NULL) {
- msgDebug("%s: unable to malloc space for "
- "MP Configuration Table Header\n", __func__);
- return (NULL);
- }
- if (!memread(addr, mpcth, sizeof(*mpcth)))
- goto bad;
- /* Compare signature and validate checksum. */
- if (strncmp(mpcth->signature, MPCTH_SIG, strlen(MPCTH_SIG)) != 0) {
- msgDebug("%s: bad mpcth signature\n", __func__);
- goto bad;
- }
- table_length = mpcth->base_table_length;
- mpcth = realloc(mpcth, table_length);
- if (mpcth == NULL) {
- msgDebug("%s: unable to realloc space for mpcth (len %u)\n",
- __func__, table_length);
- return (NULL);
- }
- if (!memread(addr, mpcth, table_length))
- goto bad;
- cp = (u_int8_t *)mpcth;
- sum = 0;
- for (idx = 0; idx < mpcth->base_table_length; idx++)
- sum += *(cp + idx);
- if (sum != 0) {
- msgDebug("%s: bad mpcth checksum (%d)\n", __func__, sum);
- goto bad;
- }
-
- return mpcth;
-bad:
- free(mpcth);
- return (NULL);
-}
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