1/*- 2 * Copyright (c) 1998 Michael Smith <msmith@freebsd.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h>
| 1/*- 2 * Copyright (c) 1998 Michael Smith <msmith@freebsd.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h>
|
28__FBSDID("$FreeBSD: head/sys/boot/i386/libi386/biossmap.c 179631 2008-06-07 03:07:32Z jhb $");
| 28__FBSDID("$FreeBSD: head/sys/boot/i386/libi386/biossmap.c 191111 2009-04-15 17:31:22Z jkim $");
|
29 30/* 31 * Obtain memory configuration information from the BIOS 32 */ 33#include <stand.h> 34#include <sys/param.h> 35#include <sys/linker.h>
| 29 30/* 31 * Obtain memory configuration information from the BIOS 32 */ 33#include <stand.h> 34#include <sys/param.h> 35#include <sys/linker.h>
|
| 36#include <sys/queue.h> 37#include <sys/stddef.h>
|
36#include <machine/metadata.h>
| 38#include <machine/metadata.h>
|
| 39#include <machine/psl.h>
|
37#include <machine/pc/bios.h> 38#include "bootstrap.h" 39#include "libi386.h" 40#include "btxv86.h" 41
| 40#include <machine/pc/bios.h> 41#include "bootstrap.h" 42#include "libi386.h" 43#include "btxv86.h" 44
|
42static struct { 43 struct bios_smap _smap_entry; 44 char pad[8]; /* Bad BIOS writer, no cookie! */ 45} smap;
| 45#define V86_CY(x) ((x) & PSL_C)
|
46
| 46
|
47static struct bios_smap *smapbase; 48static int smaplen;
| 47struct smap_buf { 48 struct bios_smap smap; 49 uint32_t xattr; /* Extended attribute from ACPI 3.0 */ 50 STAILQ_ENTRY(smap_buf) bufs; 51};
|
49
| 52
|
| 53#define SMAP_BUFSIZE offsetof(struct smap_buf, bufs) 54 55static struct bios_smap *smapbase; 56static uint32_t *smapattr; 57static u_int smaplen; 58
|
50void 51bios_getsmap(void) 52{
| 59void 60bios_getsmap(void) 61{
|
53 int n;
| 62 struct smap_buf buf; 63 STAILQ_HEAD(smap_head, smap_buf) head = 64 STAILQ_HEAD_INITIALIZER(head); 65 struct smap_buf *cur, *next; 66 u_int n, x;
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54
| 67
|
| 68 STAILQ_INIT(&head);
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55 n = 0;
| 69 n = 0;
|
56 smaplen = 0; 57 /* Count up segments in system memory map */
| 70 x = 0;
|
58 v86.ebx = 0; 59 do { 60 v86.ctl = V86_FLAGS;
| 71 v86.ebx = 0; 72 do { 73 v86.ctl = V86_FLAGS;
|
61 v86.addr = 0x15; /* int 0x15 function 0xe820*/ 62 v86.eax = 0xe820; 63 v86.ecx = sizeof(struct bios_smap);
| 74 v86.addr = 0x15; 75 v86.eax = 0xe820; /* int 0x15 function 0xe820 */ 76 v86.ecx = SMAP_BUFSIZE;
|
64 v86.edx = SMAP_SIG;
| 77 v86.edx = SMAP_SIG;
|
65 v86.es = VTOPSEG(&smap); 66 v86.edi = VTOPOFF(&smap);
| 78 v86.es = VTOPSEG(&buf); 79 v86.edi = VTOPOFF(&buf);
|
67 v86int();
| 80 v86int();
|
68 if ((v86.efl & 1) || (v86.eax != SMAP_SIG))
| 81 if (V86_CY(v86.efl) || v86.eax != SMAP_SIG || 82 v86.ecx < sizeof(buf.smap) || v86.ecx > SMAP_BUFSIZE)
|
69 break;
| 83 break;
|
| 84 85 next = malloc(sizeof(*next)); 86 if (next == NULL) 87 break; 88 next->smap = buf.smap; 89 if (v86.ecx == SMAP_BUFSIZE) { 90 next->xattr = buf.xattr; 91 x++; 92 } 93 STAILQ_INSERT_TAIL(&head, next, bufs);
|
70 n++; 71 } while (v86.ebx != 0);
| 94 n++; 95 } while (v86.ebx != 0);
|
72 if (n == 0) 73 return; 74 n += 10; /* spare room */ 75 smapbase = malloc(n * sizeof(*smapbase));
| 96 smaplen = n;
|
76
| 97
|
77 /* Save system memory map */ 78 v86.ebx = 0; 79 do { 80 v86.ctl = V86_FLAGS; 81 v86.addr = 0x15; /* int 0x15 function 0xe820*/ 82 v86.eax = 0xe820; 83 v86.ecx = sizeof(struct bios_smap); 84 v86.edx = SMAP_SIG; 85 v86.es = VTOPSEG(&smap); 86 v86.edi = VTOPOFF(&smap); 87 v86int(); 88 bcopy(&smap, &smapbase[smaplen], sizeof(struct bios_smap)); 89 smaplen++; 90 if ((v86.efl & 1) || (v86.eax != SMAP_SIG)) 91 break; 92 } while (v86.ebx != 0 && smaplen < n);
| 98 if (smaplen > 0) { 99 smapbase = malloc(smaplen * sizeof(*smapbase)); 100 if (smapbase != NULL) { 101 n = 0; 102 STAILQ_FOREACH(cur, &head, bufs) 103 smapbase[n++] = cur->smap; 104 } 105 if (smaplen == x) { 106 smapattr = malloc(smaplen * sizeof(*smapattr)); 107 if (smapattr != NULL) { 108 n = 0; 109 STAILQ_FOREACH(cur, &head, bufs) 110 smapattr[n++] = cur->xattr & 111 SMAP_XATTR_MASK; 112 } 113 } else 114 smapattr = NULL; 115 cur = STAILQ_FIRST(&head); 116 while (cur != NULL) { 117 next = STAILQ_NEXT(cur, bufs); 118 free(cur); 119 cur = next; 120 } 121 }
|
93} 94 95void 96bios_addsmapdata(struct preloaded_file *kfp) 97{
| 122} 123 124void 125bios_addsmapdata(struct preloaded_file *kfp) 126{
|
98 int len;
| 127 size_t size;
|
99
| 128
|
100 if (smapbase == 0 || smaplen == 0)
| 129 if (smapbase == NULL || smaplen == 0)
|
101 return;
| 130 return;
|
102 len = smaplen * sizeof(*smapbase); 103 file_addmetadata(kfp, MODINFOMD_SMAP, len, smapbase);
| 131 size = smaplen * sizeof(*smapbase); 132 file_addmetadata(kfp, MODINFOMD_SMAP, size, smapbase); 133 if (smapattr != NULL) { 134 size = smaplen * sizeof(*smapattr); 135 file_addmetadata(kfp, MODINFOMD_SMAP_XATTR, size, smapattr); 136 }
|
104} 105 106COMMAND_SET(smap, "smap", "show BIOS SMAP", command_smap); 107 108static int 109command_smap(int argc, char *argv[]) 110{
| 137} 138 139COMMAND_SET(smap, "smap", "show BIOS SMAP", command_smap); 140 141static int 142command_smap(int argc, char *argv[]) 143{
|
111 int i;
| 144 u_int i;
|
112
| 145
|
113 if (smapbase == 0 || smaplen == 0)
| 146 if (smapbase == NULL || smaplen == 0)
|
114 return (CMD_ERROR);
| 147 return (CMD_ERROR);
|
115 for (i = 0; i < smaplen; i++) 116 printf("SMAP type=%02x base=%016llx len=%016llx\n", 117 smapbase[i].type, smapbase[i].base, smapbase[i].length);
| 148 if (smapattr != NULL) 149 for (i = 0; i < smaplen; i++) 150 printf("SMAP type=%02x base=%016llx len=%016llx attr=%02x\n", 151 (unsigned int)smapbase[i].type, 152 (unsigned long long)smapbase[i].base, 153 (unsigned long long)smapbase[i].length, 154 (unsigned int)smapattr[i]); 155 else 156 for (i = 0; i < smaplen; i++) 157 printf("SMAP type=%02x base=%016llx len=%016llx\n", 158 (unsigned int)smapbase[i].type, 159 (unsigned long long)smapbase[i].base, 160 (unsigned long long)smapbase[i].length);
|
118 return (CMD_OK); 119}
| 161 return (CMD_OK); 162}
|