2 * ----------------------------------------------------------------------------
3 * "THE BEER-WARE LICENSE" (Revision 42):
4 * <phk@login.dknet.dk> wrote this file. As long as you retain this notice you
5 * can do whatever you want with this stuff. If we meet some day, and you think
6 * this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp
7 * ----------------------------------------------------------------------------
9 * $FreeBSD: src/lib/libdisk/write_disk.c,v 1.28.2.10 2001/05/13 21:01:38 jkh Exp $
18 #include <sys/types.h>
20 #include <sys/ioctl.h>
21 #include <sys/disklabel.h>
22 #include <sys/diskslice.h>
26 #define DOSPTYP_EXTENDED 5
30 #define DEF_INTERLEAVE 1
33 #define WHERE(offset,disk) (offset)
35 #define WHERE(offset,disk) (disk->flags & DISK_ON_TRACK ? offset + 63 : offset)
38 /* XXX: A lot of hardcoded 512s probably should be foo->sector_size;
39 I'm not sure which, so I leave it like it worked before. --schweikh */
41 Write_FreeBSD(int fd, struct disk *new, struct disk *old, struct chunk *c1)
52 for(i = 0; i < BBSIZE/512; i++) {
53 p = read_block(fd, WHERE(i + c1->offset, new), 512);
54 memcpy(buf + 512 * i, p, 512);
59 memcpy(buf, new->boot1, 512);
62 memcpy(buf + 512, new->boot2, BBSIZE-512);
63 #elif defined(__alpha__)
65 memcpy(buf + 512, new->boot1, BBSIZE-512);
68 dl = (struct disklabel *)(buf + 512 * LABELSECTOR + LABELOFFSET);
69 memset(dl, 0, sizeof *dl);
71 for(c2 = c1->part; c2; c2 = c2->next) {
72 if (c2->type == unused) continue;
73 if (!strcmp(c2->name, "X")) continue;
75 j = c2->name[strlen(c2->name) - 1] - 'a';
77 j = c2->name[strlen(new->name) + 2] - 'a';
79 if (j < 0 || j >= MAXPARTITIONS || j == RAW_PART) {
81 warn("weird partition letter %c", c2->name[strlen(new->name) + 2]);
85 dl->d_partitions[j].p_size = c2->size;
86 dl->d_partitions[j].p_offset = c2->offset;
87 dl->d_partitions[j].p_fstype = c2->subtype;
90 dl->d_bbsize = BBSIZE;
92 * Add in defaults for superblock size, interleave, and rpms
94 dl->d_sbsize = SBSIZE;
95 dl->d_interleave = DEF_INTERLEAVE;
98 strcpy(dl->d_typename, c1->name);
101 dl->d_secperunit = new->chunks->size;
102 dl->d_ncylinders = new->bios_cyl;
103 dl->d_ntracks = new->bios_hd;
104 dl->d_nsectors = new->bios_sect;
105 dl->d_secpercyl = dl->d_ntracks * dl->d_nsectors;
107 dl->d_npartitions = MAXPARTITIONS;
109 dl->d_type = new->name[0] == 's' || new->name[0] == 'd' ||
110 new->name[0] == 'o' ? DTYPE_SCSI : DTYPE_ESDI;
111 dl->d_partitions[RAW_PART].p_size = c1->size;
112 dl->d_partitions[RAW_PART].p_offset = c1->offset;
115 dl->d_interleave = 1;
119 if(new->flags & DISK_ON_TRACK)
120 for(i=0;i<MAXPARTITIONS;i++)
121 if (dl->d_partitions[i].p_size)
122 dl->d_partitions[i].p_offset += 63;
124 dl->d_magic = DISKMAGIC;
125 dl->d_magic2 = DISKMAGIC;
126 dl->d_checksum = dkcksum(dl);
130 * Tell SRM where the bootstrap is.
138 * Generate the bootblock checksum for the SRM console.
140 for (lp = (u_long *)buf, i = 0, sum = 0; i < 63; i++)
145 for(i=0;i<BBSIZE/512;i++) {
146 write_block(fd,WHERE(i + c1->offset, new), buf + 512 * i, 512);
153 Write_Extended(int fd, struct disk *new, struct disk *old, struct chunk *c1)
158 #if defined(__i386__) && !defined(PC98)
160 Write_Int32(u_int32_t *p, u_int32_t v)
162 u_int8_t *bp = (u_int8_t *)p;
163 bp[0] = (v >> 0) & 0xff;
164 bp[1] = (v >> 8) & 0xff;
165 bp[2] = (v >> 16) & 0xff;
166 bp[3] = (v >> 24) & 0xff;
170 #if defined(__i386__) && !defined(PC98)
172 * Special install-time configuration for the i386 boot0 boot manager.
175 Cfg_Boot_Mgr(u_char *mbr, int edd)
177 if (mbr[0x1b0] == 0x66 && mbr[0x1b1] == 0xbb) {
179 mbr[0x1bb] |= 0x80; /* Packet mode on */
181 mbr[0x1bb] &= 0x7f; /* Packet mode off */
187 Write_Disk(struct disk *d1)
193 struct disk *old = 0;
198 struct dos_partition *dp,work[NDOSPART];
201 int PC98_EntireDisk = 0;
205 int need_edd = 0; /* Need EDD (packet interface) */
211 strcpy(device,_PATH_DEV);
212 strcat(device,d1->name);
215 /* XXX - for entire FreeBSD(98) */
216 for (c1 = d1->chunks->part; c1; c1 = c1->next) {
217 if ((c1->type == freebsd) || (c1->offset == 0))
222 fd = open(device,O_RDWR);
225 warn("open(%s) failed", device);
229 ioctl(fd, DIOCWLABEL, &one);
231 memset(s,0,sizeof s);
233 mbr = read_block(fd, WHERE(1, d1), d1->sector_size);
235 mbr = read_block(fd, WHERE(0, d1), d1->sector_size);
237 dp = (struct dos_partition*)(mbr + DOSPARTOFF);
238 memcpy(work, dp, sizeof work);
241 for (c1 = d1->chunks->part; c1; c1 = c1->next) {
242 if (c1->type == unused) continue;
243 if (!strcmp(c1->name, "X")) continue;
245 j = c1->name[4] - '1';
246 j = c1->name[strlen(d1->name) + 1] - '1';
256 if (c1->type == extended)
257 ret += Write_Extended(fd, d1, old, c1);
259 if (c1->type == freebsd)
260 ret += Write_FreeBSD(fd, d1, old, c1);
264 Write_Int32(&dp[j].dp_start, c1->offset);
265 Write_Int32(&dp[j].dp_size, c1->size);
270 dp[j].dp_ssect = dp[j].dp_ipl_sct = i % d1->bios_sect;
273 dp[j].dp_shd = dp[j].dp_ipl_head = i % d1->bios_hd;
276 dp[j].dp_scyl = dp[j].dp_ipl_cyl = i;
278 if (i >= 1024*d1->bios_sect*d1->bios_hd) {
279 dp[j].dp_ssect = 0xff;
281 dp[j].dp_scyl = 0xff;
284 dp[j].dp_ssect = i % d1->bios_sect;
285 i -= dp[j].dp_ssect++;
287 dp[j].dp_shd = i % d1->bios_hd;
292 dp[j].dp_ssect |= i >> 2;
297 printf("S:%lu = (%x/%x/%x)",
298 c1->offset, dp[j].dp_scyl, dp[j].dp_shd, dp[j].dp_ssect);
304 dp[j].dp_esect = dp[j].dp_ehd = 0;
305 dp[j].dp_ecyl = i / (d1->bios_sect * d1->bios_hd);
307 dp[j].dp_esect = i % d1->bios_sect;
310 dp[j].dp_ehd = i % d1->bios_hd;
316 dp[j].dp_esect = i % d1->bios_sect;
317 i -= dp[j].dp_esect++;
319 dp[j].dp_ehd = i % d1->bios_hd;
322 if (i>1023) i = 1023;
325 dp[j].dp_esect |= i >> 2;
329 printf(" E:%lu = (%x/%x/%x)\n",
330 c1->end, dp[j].dp_ecyl, dp[j].dp_ehd, dp[j].dp_esect);
334 dp[j].dp_mid = c1->subtype & 0xff;
335 dp[j].dp_sid = c1->subtype >> 8;
336 if (c1->flags & CHUNK_ACTIVE)
337 dp[j].dp_mid |= 0x80;
339 strncpy(dp[j].dp_name, c1->sname, 16);
341 dp[j].dp_typ = c1->subtype;
342 if (c1->flags & CHUNK_ACTIVE)
343 dp[j].dp_flag = 0x80;
351 for(i = 0; i < NDOSPART; i++) {
353 memset(dp + i, 0, sizeof *dp);
361 for(i = 0; i < NDOSPART; i++)
362 if (dp[i].dp_typ == 0xa5)
363 dp[i].dp_flag = 0x80;
368 write_block(fd, WHERE(0, d1), d1->bootipl, d1->sector_size);
370 mbr = read_block(fd, WHERE(1, d1), d1->sector_size);
371 memcpy(mbr + DOSPARTOFF, dp, sizeof *dp * NDOSPART);
372 /* XXX - for entire FreeBSD(98) */
373 for (c1 = d1->chunks->part; c1; c1 = c1->next)
374 if (((c1->type == freebsd) || (c1->type == fat))
375 && (c1->offset == 0))
377 if (PC98_EntireDisk == 0)
378 write_block(fd, WHERE(1, d1), mbr, d1->sector_size);
381 for (i = 0; i * d1->sector_size < d1->bootmenu_size; i++)
382 write_block(fd, WHERE(2 + i, d1), &d1->bootmenu[i * d1->sector_size], d1->sector_size);
384 mbr = read_block(fd, WHERE(0, d1), d1->sector_size);
386 memcpy(mbr, d1->bootmgr, DOSPARTOFF);
387 Cfg_Boot_Mgr(mbr, need_edd);
389 memcpy(mbr + DOSPARTOFF, dp, sizeof *dp * NDOSPART);
392 write_block(fd, WHERE(0, d1), mbr, d1->sector_size);
393 if (d1->bootmgr && d1->bootmgr_size > d1->sector_size)
394 for(i = 1; i * d1->sector_size <= d1->bootmgr_size; i++)
395 write_block(fd, WHERE(i, d1), &d1->bootmgr[i * d1->sector_size], d1->sector_size);
400 i = ioctl(fd, DIOCSYNCSLICEINFO, &i);
403 warn("ioctl(DIOCSYNCSLICEINFO)");
405 ioctl(fd, DIOCWLABEL, &zero);