2 * ----------------------------------------------------------------------------
3 * "THE BEER-WARE LICENSE" (Revision 42):
4 * <phk@FreeBSD.org> 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 * ----------------------------------------------------------------------------
10 #include <sys/cdefs.h>
11 __FBSDID("$FreeBSD$");
18 #include <sys/types.h>
20 #include <sys/disklabel.h>
21 #include <sys/diskmbr.h>
26 * XXX: A lot of hardcoded 512s probably should be foo->sector_size;
27 * I'm not sure which, so I leave it like it worked before. --schweikh
30 Write_FreeBSD(int fd, const struct disk *new, const struct chunk *c1)
37 for (i = 0; i < BBSIZE/512; i++) {
38 if (!(p = read_block(fd, i + c1->offset, 512)))
40 memcpy(buf + 512 * i, p, 512);
44 memcpy(buf, new->boot1, 512);
47 memcpy(buf + 512, new->boot2, BBSIZE - 512);
49 dl = (struct disklabel *)(buf + 512 * LABELSECTOR + LABELOFFSET);
50 Fill_Disklabel(dl, new, c1);
52 for (i = 0; i < BBSIZE / 512; i++)
53 write_block(fd, i + c1->offset, buf + 512 * i, 512);
59 Write_Int32(u_int32_t *p, u_int32_t v)
61 u_int8_t *bp = (u_int8_t *)p;
63 bp[0] = (v >> 0) & 0xff;
64 bp[1] = (v >> 8) & 0xff;
65 bp[2] = (v >> 16) & 0xff;
66 bp[3] = (v >> 24) & 0xff;
70 * Special install-time configuration for the i386 boot0 boot manager.
73 Cfg_Boot_Mgr(u_char *mbrblk, int edd)
76 if (mbrblk[0x1b0] == 0x66 && mbrblk[0x1b1] == 0xbb) {
78 mbrblk[0x1bb] |= 0x80; /* Packet mode on */
80 mbrblk[0x1bb] &= 0x7f; /* Packet mode off */
85 Write_Disk(const struct disk *d1)
93 struct dos_partition *dp,work[NDOSPART];
95 int need_edd = 0; /* Need EDD (packet interface) */
97 strcpy(device, _PATH_DEV);
98 strcat(device, d1->name);
100 fd = open(device, O_RDWR);
104 memset(s, 0, sizeof s);
105 if (!(mbrblk = read_block(fd, 0, d1->sector_size))) {
109 dp = (struct dos_partition *)(mbrblk + DOSPARTOFF);
110 memcpy(work, dp, sizeof work);
113 for (c1 = d1->chunks->part; c1; c1 = c1->next) {
114 if (c1->type == unused)
116 if (!strcmp(c1->name, "X"))
118 j = c1->name[strlen(d1->name) + 1] - '1';
122 if (c1->type == freebsd)
123 ret += Write_FreeBSD(fd, d1, c1);
125 Write_Int32(&dp[j].dp_start, c1->offset);
126 Write_Int32(&dp[j].dp_size, c1->size);
129 if (i >= 1024 * d1->bios_sect * d1->bios_hd) {
130 dp[j].dp_ssect = 0xff;
132 dp[j].dp_scyl = 0xff;
135 dp[j].dp_ssect = i % d1->bios_sect;
136 i -= dp[j].dp_ssect++;
138 dp[j].dp_shd = i % d1->bios_hd;
143 dp[j].dp_ssect |= i >> 2;
146 printf("S:%lu = (%x/%x/%x)", c1->offset,
147 dp[j].dp_scyl, dp[j].dp_shd, dp[j].dp_ssect);
151 dp[j].dp_esect = i % d1->bios_sect;
152 i -= dp[j].dp_esect++;
154 dp[j].dp_ehd = i % d1->bios_hd;
161 dp[j].dp_esect |= i >> 2;
163 printf(" E:%lu = (%x/%x/%x)\n", c1->end,
164 dp[j].dp_ecyl, dp[j].dp_ehd, dp[j].dp_esect);
167 dp[j].dp_typ = c1->subtype;
168 if (c1->flags & CHUNK_ACTIVE)
169 dp[j].dp_flag = 0x80;
174 for (i = 0; i < NDOSPART; i++) {
176 memset(dp + i, 0, sizeof *dp);
181 for(i = 0; i < NDOSPART; i++)
182 if (dp[i].dp_typ == 0xa5)
183 dp[i].dp_flag = 0x80;
185 if (!(mbrblk = read_block(fd, 0, d1->sector_size))) {
190 memcpy(mbrblk, d1->bootmgr, DOSPARTOFF);
191 Cfg_Boot_Mgr(mbrblk, need_edd);
193 memcpy(mbrblk + DOSPARTOFF, dp, sizeof *dp * NDOSPART);
194 mbrblk[512-2] = 0x55;
195 mbrblk[512-1] = 0xaa;
196 write_block(fd, 0, mbrblk, d1->sector_size);
197 if (d1->bootmgr && d1->bootmgr_size > d1->sector_size)
198 for (i = 1; i * d1->sector_size <= d1->bootmgr_size; i++)
199 write_block(fd, i, &d1->bootmgr[i * d1->sector_size],