Index: head/sys/boot/pc98/boot2/boot2.c =================================================================== --- head/sys/boot/pc98/boot2/boot2.c (revision 284884) +++ head/sys/boot/pc98/boot2/boot2.c (revision 284885) @@ -1,842 +1,844 @@ /*- * Copyright (c) 2008-2009 TAKAHASHI Yoshihiro * Copyright (c) 1998 Robert Nordier * All rights reserved. * * Redistribution and use in source and binary forms are freely * permitted provided that the above copyright notice and this * paragraph and the following disclaimer are duplicated in all * such forms. * * This software is provided "AS IS" and without any express or * implied warranties, including, without limitation, the implied * warranties of merchantability and fitness for a particular * purpose. */ #include __FBSDID("$FreeBSD$"); #include #include #include #include #include #include #include #include #include #include #include #include "boot2.h" #include "lib.h" /* Define to 0 to omit serial support */ #ifndef SERIAL #define SERIAL 0 #endif #define IO_KEYBOARD 1 #define IO_SERIAL 2 #if SERIAL #define DO_KBD (ioctrl & IO_KEYBOARD) #define DO_SIO (ioctrl & IO_SERIAL) #else #define DO_KBD (1) #define DO_SIO (0) #endif #define SECOND 1 /* Circa that many ticks in a second. */ #define RBX_ASKNAME 0x0 /* -a */ #define RBX_SINGLE 0x1 /* -s */ /* 0x2 is reserved for log2(RB_NOSYNC). */ /* 0x3 is reserved for log2(RB_HALT). */ /* 0x4 is reserved for log2(RB_INITNAME). */ #define RBX_DFLTROOT 0x5 /* -r */ #define RBX_KDB 0x6 /* -d */ /* 0x7 is reserved for log2(RB_RDONLY). */ /* 0x8 is reserved for log2(RB_DUMP). */ /* 0x9 is reserved for log2(RB_MINIROOT). */ #define RBX_CONFIG 0xa /* -c */ #define RBX_VERBOSE 0xb /* -v */ #define RBX_SERIAL 0xc /* -h */ #define RBX_CDROM 0xd /* -C */ /* 0xe is reserved for log2(RB_POWEROFF). */ #define RBX_GDB 0xf /* -g */ #define RBX_MUTE 0x10 /* -m */ /* 0x11 is reserved for log2(RB_SELFTEST). */ /* 0x12 is reserved for boot programs. */ /* 0x13 is reserved for boot programs. */ #define RBX_PAUSE 0x14 /* -p */ #define RBX_QUIET 0x15 /* -q */ #define RBX_NOINTR 0x1c /* -n */ /* 0x1d is reserved for log2(RB_MULTIPLE) and is just misnamed here. */ #define RBX_DUAL 0x1d /* -D */ /* 0x1f is reserved for log2(RB_BOOTINFO). */ /* pass: -a, -s, -r, -d, -c, -v, -h, -C, -g, -m, -p, -D */ #define RBX_MASK (OPT_SET(RBX_ASKNAME) | OPT_SET(RBX_SINGLE) | \ OPT_SET(RBX_DFLTROOT) | OPT_SET(RBX_KDB ) | \ OPT_SET(RBX_CONFIG) | OPT_SET(RBX_VERBOSE) | \ OPT_SET(RBX_SERIAL) | OPT_SET(RBX_CDROM) | \ OPT_SET(RBX_GDB ) | OPT_SET(RBX_MUTE) | \ OPT_SET(RBX_PAUSE) | OPT_SET(RBX_DUAL)) #define PATH_DOTCONFIG "/boot.config" #define PATH_CONFIG "/boot/config" #define PATH_BOOT3 "/boot/loader" #define PATH_KERNEL "/boot/kernel/kernel" #define ARGS 0x900 #define NOPT 14 #define NDEV 3 #define DRV_DISK 0xf0 #define DRV_UNIT 0x0f #define TYPE_AD 0 #define TYPE_DA 1 #define TYPE_FD 2 #define OPT_SET(opt) (1 << (opt)) #define OPT_CHECK(opt) ((opts) & OPT_SET(opt)) extern uint32_t _end; static const char optstr[NOPT] = "DhaCcdgmnpqrsv"; /* Also 'P', 'S' */ static const unsigned char flags[NOPT] = { RBX_DUAL, RBX_SERIAL, RBX_ASKNAME, RBX_CDROM, RBX_CONFIG, RBX_KDB, RBX_GDB, RBX_MUTE, RBX_NOINTR, RBX_PAUSE, RBX_QUIET, RBX_DFLTROOT, RBX_SINGLE, RBX_VERBOSE }; static const char *const dev_nm[NDEV] = {"ad", "da", "fd"}; static const unsigned char dev_maj[NDEV] = {30, 4, 2}; static const unsigned char dev_daua[NDEV] = {0x80, 0xa0, 0x90}; static struct dsk { unsigned daua; unsigned type; unsigned disk; unsigned unit; unsigned head; unsigned sec; uint8_t slice; uint8_t part; unsigned start; } dsk; static char cmd[512], cmddup[512], knamebuf[1024]; static const char *kname; static uint32_t opts; static struct bootinfo bootinfo; #if SERIAL static int comspeed = SIOSPD; static uint8_t ioctrl = IO_KEYBOARD; #endif +int main(void); void exit(int); static void load(void); static int parse(void); static int dskread(void *, unsigned, unsigned); static void printf(const char *,...); static void putchar(int); static int drvread(void *, unsigned); static int keyhit(unsigned); static int xputc(int); static int xgetc(int); static inline int getc(int); static void memcpy(void *, const void *, int); static void memcpy(void *dst, const void *src, int len) { const char *s = src; char *d = dst; while (len--) *d++ = *s++; } static inline int strcmp(const char *s1, const char *s2) { for (; *s1 == *s2 && *s1; s1++, s2++); return (unsigned char)*s1 - (unsigned char)*s2; } #define UFS_SMALL_CGBASE #include "ufsread.c" static inline int xfsread(ufs_ino_t inode, void *buf, size_t nbyte) { if ((size_t)fsread(inode, buf, nbyte) != nbyte) { printf("Invalid %s\n", "format"); return -1; } return 0; } static inline void getstr(void) { char *s; int c; s = cmd; for (;;) { switch (c = xgetc(0)) { case 0: break; case '\177': case '\b': if (s > cmd) { s--; printf("\b \b"); } break; case '\n': case '\r': *s = 0; return; default: if (s - cmd < sizeof(cmd) - 1) *s++ = c; putchar(c); } } } static inline void putc(int c) { v86.ctl = V86_ADDR | V86_CALLF | V86_FLAGS; v86.addr = PUTCORG; /* call to putc in boot1 */ v86.eax = c; v86int(); v86.ctl = V86_FLAGS; } static inline int is_scsi_hd(void) { if ((*(u_char *)PTOV(0x482) >> dsk.unit) & 0x01) return 1; return 0; } static inline void fix_sector_size(void) { u_char *p; p = (u_char *)PTOV(0x460 + dsk.unit * 4); /* SCSI equipment parameter */ if ((p[0] & 0x1f) == 7) { /* SCSI MO */ if (!(p[3] & 0x30)) { /* 256B / sector */ p[3] |= 0x10; /* forced set 512B / sector */ p[3 + 0xa1000] |= 0x10; } } } static inline uint32_t get_diskinfo(void) { if (dsk.disk == 0x30) { /* 1440KB FD */ /* 80 cylinders, 2 heads, 18 sectors */ return (80 << 16) | (2 << 8) | 18; } else if (dsk.disk == 0x90) { /* 1200KB FD */ /* 80 cylinders, 2 heads, 15 sectors */ return (80 << 16) | (2 << 8) | 15; } else if (dsk.disk == 0x80 || is_scsi_hd()) { /* IDE or SCSI HDD */ v86.addr = 0x1b; v86.eax = 0x8400 | dsk.daua; v86int(); return (v86.ecx << 16) | v86.edx; } /* SCSI MO or CD */ fix_sector_size(); /* SCSI MO */ /* other SCSI devices */ return (65535 << 16) | (8 << 8) | 32; } static void set_dsk(void) { uint32_t di; di = get_diskinfo(); dsk.head = (di >> 8) & 0xff; dsk.sec = di & 0xff; dsk.start = 0; } #ifdef GET_BIOSGEOM static uint32_t bd_getbigeom(int bunit) { int hds = 0; int unit = 0x80; /* IDE HDD */ u_int addr = 0x55d; while (unit < 0xa7) { if (*(u_char *)PTOV(addr) & (1 << (unit & 0x0f))) if (hds++ == bunit) break; if (unit >= 0xA0) { int media = ((unsigned *)PTOV(0x460))[unit & 0x0F] & 0x1F; if (media == 7 && hds++ == bunit) /* SCSI MO */ return(0xFFFE0820); /* C:65535 H:8 S:32 */ } if (++unit == 0x84) { unit = 0xA0; /* SCSI HDD */ addr = 0x482; } } if (unit == 0xa7) return 0x4F020F; /* 1200KB FD C:80 H:2 S:15 */ v86.addr = 0x1b; v86.eax = 0x8400 | unit; v86int(); if (v86.efl & 0x1) return 0x4F020F; /* 1200KB FD C:80 H:2 S:15 */ return ((v86.ecx & 0xffff) << 16) | (v86.edx & 0xffff); } #endif static int check_slice(void) { struct pc98_partition *dp; char *sec; unsigned i, cyl; sec = dmadat->secbuf; cyl = *(uint16_t *)PTOV(ARGS); set_dsk(); if (dsk.type == TYPE_FD) return (WHOLE_DISK_SLICE); if (drvread(sec, PC98_BBSECTOR)) return (WHOLE_DISK_SLICE); /* Read error */ dp = (void *)(sec + PC98_PARTOFF); for (i = 0; i < PC98_NPARTS; i++) { if (dp[i].dp_mid == DOSMID_386BSD) { if (dp[i].dp_scyl <= cyl && cyl <= dp[i].dp_ecyl) return (BASE_SLICE + i); } } return (WHOLE_DISK_SLICE); } int main(void) { #ifdef GET_BIOSGEOM int i; #endif uint8_t autoboot; ufs_ino_t ino; size_t nbyte; dmadat = (void *)(roundup2(__base + (int32_t)&_end, 0x10000) - __base); v86.ctl = V86_FLAGS; v86.efl = PSL_RESERVED_DEFAULT | PSL_I; dsk.daua = *(uint8_t *)PTOV(0x584); dsk.disk = dsk.daua & DRV_DISK; dsk.unit = dsk.daua & DRV_UNIT; if (dsk.disk == 0x80) dsk.type = TYPE_AD; else if (dsk.disk == 0xa0) dsk.type = TYPE_DA; else /* if (dsk.disk == 0x30 || dsk.disk == 0x90) */ dsk.type = TYPE_FD; dsk.slice = check_slice(); #ifdef GET_BIOSGEOM for (i = 0; i < N_BIOS_GEOM; i++) bootinfo.bi_bios_geom[i] = bd_getbigeom(i); #endif bootinfo.bi_version = BOOTINFO_VERSION; bootinfo.bi_size = sizeof(bootinfo); /* Process configuration file */ autoboot = 1; if ((ino = lookup(PATH_CONFIG)) || (ino = lookup(PATH_DOTCONFIG))) { nbyte = fsread(ino, cmd, sizeof(cmd) - 1); cmd[nbyte] = '\0'; } if (*cmd) { memcpy(cmddup, cmd, sizeof(cmd)); if (parse()) autoboot = 0; if (!OPT_CHECK(RBX_QUIET)) printf("%s: %s", PATH_CONFIG, cmddup); /* Do not process this command twice */ *cmd = 0; } /* * Try to exec stage 3 boot loader. If interrupted by a keypress, * or in case of failure, try to load a kernel directly instead. */ if (!kname) { kname = PATH_BOOT3; if (autoboot && !keyhit(3*SECOND)) { load(); kname = PATH_KERNEL; } } /* Present the user with the boot2 prompt. */ for (;;) { if (!autoboot || !OPT_CHECK(RBX_QUIET)) printf("\nFreeBSD/pc98 boot\n" "Default: %u:%s(%u,%c)%s\n" "boot: ", dsk.unit, dev_nm[dsk.type], dsk.unit, 'a' + dsk.part, kname); if (DO_SIO) sio_flush(); if (!autoboot || keyhit(3*SECOND)) getstr(); else if (!autoboot || !OPT_CHECK(RBX_QUIET)) putchar('\n'); autoboot = 0; if (parse()) putchar('\a'); else load(); } } /* XXX - Needed for btxld to link the boot2 binary; do not remove. */ void exit(int x) { } static void load(void) { union { struct exec ex; Elf32_Ehdr eh; } hdr; static Elf32_Phdr ep[2]; static Elf32_Shdr es[2]; caddr_t p; ufs_ino_t ino; uint32_t addr; int k; uint8_t i, j; if (!(ino = lookup(kname))) { if (!ls) printf("No %s\n", kname); return; } if (xfsread(ino, &hdr, sizeof(hdr))) return; if (N_GETMAGIC(hdr.ex) == ZMAGIC) { addr = hdr.ex.a_entry & 0xffffff; p = PTOV(addr); fs_off = PAGE_SIZE; if (xfsread(ino, p, hdr.ex.a_text)) return; p += roundup2(hdr.ex.a_text, PAGE_SIZE); if (xfsread(ino, p, hdr.ex.a_data)) return; } else if (IS_ELF(hdr.eh)) { fs_off = hdr.eh.e_phoff; for (j = k = 0; k < hdr.eh.e_phnum && j < 2; k++) { if (xfsread(ino, ep + j, sizeof(ep[0]))) return; if (ep[j].p_type == PT_LOAD) j++; } for (i = 0; i < 2; i++) { p = PTOV(ep[i].p_paddr & 0xffffff); fs_off = ep[i].p_offset; if (xfsread(ino, p, ep[i].p_filesz)) return; } p += roundup2(ep[1].p_memsz, PAGE_SIZE); bootinfo.bi_symtab = VTOP(p); if (hdr.eh.e_shnum == hdr.eh.e_shstrndx + 3) { fs_off = hdr.eh.e_shoff + sizeof(es[0]) * (hdr.eh.e_shstrndx + 1); if (xfsread(ino, &es, sizeof(es))) return; for (i = 0; i < 2; i++) { *(Elf32_Word *)p = es[i].sh_size; p += sizeof(es[i].sh_size); fs_off = es[i].sh_offset; if (xfsread(ino, p, es[i].sh_size)) return; p += es[i].sh_size; } } addr = hdr.eh.e_entry & 0xffffff; bootinfo.bi_esymtab = VTOP(p); } else { printf("Invalid %s\n", "format"); return; } bootinfo.bi_kernelname = VTOP(kname); bootinfo.bi_bios_dev = dsk.daua; __exec((caddr_t)addr, RB_BOOTINFO | (opts & RBX_MASK), MAKEBOOTDEV(dev_maj[dsk.type], dsk.slice, dsk.unit, dsk.part), 0, 0, 0, VTOP(&bootinfo)); } static int parse() { char *arg = cmd; char *ep, *p, *q; const char *cp; unsigned int drv; int c, i, j; size_t k; while ((c = *arg++)) { if (c == ' ' || c == '\t' || c == '\n') continue; for (p = arg; *p && *p != '\n' && *p != ' ' && *p != '\t'; p++); ep = p; if (*p) *p++ = 0; if (c == '-') { while ((c = *arg++)) { if (c == 'P') { if (*(uint8_t *)PTOV(0x481) & 0x48) { cp = "yes"; } else { opts |= OPT_SET(RBX_DUAL) | OPT_SET(RBX_SERIAL); cp = "no"; } printf("Keyboard: %s\n", cp); continue; #if SERIAL } else if (c == 'S') { j = 0; while ((unsigned int)(i = *arg++ - '0') <= 9) j = j * 10 + i; if (j > 0 && i == -'0') { comspeed = j; break; } /* Fall through to error below ('S' not in optstr[]). */ #endif } for (i = 0; c != optstr[i]; i++) if (i == NOPT - 1) return -1; opts ^= OPT_SET(flags[i]); } #if SERIAL ioctrl = OPT_CHECK(RBX_DUAL) ? (IO_SERIAL|IO_KEYBOARD) : OPT_CHECK(RBX_SERIAL) ? IO_SERIAL : IO_KEYBOARD; if (DO_SIO) { if (sio_init(115200 / comspeed) != 0) ioctrl &= ~IO_SERIAL; } #endif } else { for (q = arg--; *q && *q != '('; q++); if (*q) { drv = -1; if (arg[1] == ':') { drv = *arg - '0'; if (drv > 9) return (-1); arg += 2; } if (q - arg != 2) return -1; for (i = 0; arg[0] != dev_nm[i][0] || arg[1] != dev_nm[i][1]; i++) if (i == NDEV - 1) return -1; dsk.type = i; arg += 3; dsk.unit = *arg - '0'; if (arg[1] != ',' || dsk.unit > 9) return -1; arg += 2; dsk.slice = WHOLE_DISK_SLICE; if (arg[1] == ',') { dsk.slice = *arg - '0' + 1; if (dsk.slice > PC98_NPARTS + 1) return -1; arg += 2; } if (arg[1] != ')') return -1; dsk.part = *arg - 'a'; if (dsk.part > 7) return (-1); arg += 2; if (drv == -1) drv = dsk.unit; dsk.disk = dev_daua[dsk.type]; dsk.daua = dsk.disk | dsk.unit; dsk_meta = 0; } - if (k = ep - arg) { + k = ep - arg; + if (k > 0) { if (k >= sizeof(knamebuf)) return -1; memcpy(knamebuf, arg, k + 1); kname = knamebuf; } } arg = p; } return 0; } static int dskread(void *buf, unsigned lba, unsigned nblk) { struct pc98_partition *dp; struct disklabel *d; char *sec; unsigned i; uint8_t sl; u_char *p; const char *reason; if (!dsk_meta) { sec = dmadat->secbuf; set_dsk(); if (dsk.type == TYPE_FD) goto unsliced; if (drvread(sec, PC98_BBSECTOR)) return -1; dp = (void *)(sec + PC98_PARTOFF); sl = dsk.slice; if (sl < BASE_SLICE) { for (i = 0; i < PC98_NPARTS; i++) if (dp[i].dp_mid == DOSMID_386BSD) { sl = BASE_SLICE + i; break; } dsk.slice = sl; } if (sl != WHOLE_DISK_SLICE) { dp += sl - BASE_SLICE; if (dp->dp_mid != DOSMID_386BSD) { reason = "slice"; goto error; } dsk.start = dp->dp_scyl * dsk.head * dsk.sec + dp->dp_shd * dsk.sec + dp->dp_ssect; } if (drvread(sec, dsk.start + LABELSECTOR)) return -1; d = (void *)(sec + LABELOFFSET); if (d->d_magic != DISKMAGIC || d->d_magic2 != DISKMAGIC) { if (dsk.part != RAW_PART) { reason = "label"; goto error; } } else { if (dsk.part >= d->d_npartitions || !d->d_partitions[dsk.part].p_size) { reason = "partition"; goto error; } dsk.start += d->d_partitions[dsk.part].p_offset; dsk.start -= d->d_partitions[RAW_PART].p_offset; } unsliced: ; } for (p = buf; nblk; p += 512, lba++, nblk--) { if ((i = drvread(p, dsk.start + lba))) return i; } return 0; error: printf("Invalid %s\n", reason); return -1; } static void printf(const char *fmt,...) { va_list ap; static char buf[10]; char *s; unsigned u; int c; va_start(ap, fmt); while ((c = *fmt++)) { if (c == '%') { c = *fmt++; switch (c) { case 'c': putchar(va_arg(ap, int)); continue; case 's': for (s = va_arg(ap, char *); *s; s++) putchar(*s); continue; case 'u': u = va_arg(ap, unsigned); s = buf; do *s++ = '0' + u % 10U; while (u /= 10U); while (--s >= buf) putchar(*s); continue; } } putchar(c); } va_end(ap); return; } static void putchar(int c) { if (c == '\n') xputc('\r'); xputc(c); } static int drvread(void *buf, unsigned lba) { static unsigned c = 0x2d5c7c2f; unsigned bpc, x, cyl, head, sec; bpc = dsk.sec * dsk.head; cyl = lba / bpc; x = lba % bpc; head = x / dsk.sec; sec = x % dsk.sec; if (!OPT_CHECK(RBX_QUIET)) { xputc(c = c << 8 | c >> 24); xputc('\b'); } v86.ctl = V86_ADDR | V86_CALLF | V86_FLAGS; v86.addr = READORG; /* call to read in boot1 */ v86.ecx = cyl; v86.edx = (head << 8) | sec; v86.edi = lba; v86.ebx = 512; v86.es = VTOPSEG(buf); v86.ebp = VTOPOFF(buf); v86int(); v86.ctl = V86_FLAGS; if (V86_CY(v86.efl)) { printf("error %u c/h/s %u/%u/%u lba %u\n", v86.eax >> 8 & 0xff, cyl, head, sec, lba); return -1; } return 0; } static inline void delay(void) { int i; i = 800; do { outb(0x5f, 0); /* about 600ns */ } while (--i >= 0); } static int keyhit(unsigned sec) { unsigned i; if (OPT_CHECK(RBX_NOINTR)) return 0; for (i = 0; i < sec * 1000; i++) { if (xgetc(1)) return 1; delay(); } return 0; } static int xputc(int c) { if (DO_KBD) putc(c); if (DO_SIO) sio_putc(c); return c; } static int getc(int fn) { v86.addr = 0x18; v86.eax = fn << 8; v86int(); if (fn) return (v86.ebx >> 8) & 0x01; else return v86.eax & 0xff; } static int xgetc(int fn) { if (OPT_CHECK(RBX_NOINTR)) return 0; for (;;) { if (DO_KBD && getc(1)) return fn ? 1 : getc(0); if (DO_SIO && sio_ischar()) return fn ? 1 : sio_getc(); if (fn) return 0; } }