diff options
Diffstat (limited to 'stand/sparc64/boot1/boot1.c')
| -rw-r--r-- | stand/sparc64/boot1/boot1.c | 751 |
1 files changed, 751 insertions, 0 deletions
diff --git a/stand/sparc64/boot1/boot1.c b/stand/sparc64/boot1/boot1.c new file mode 100644 index 000000000000..4724ca165fd4 --- /dev/null +++ b/stand/sparc64/boot1/boot1.c @@ -0,0 +1,751 @@ +/*- + * Copyright (c) 1998 Robert Nordier + * All rights reserved. + * Copyright (c) 2001 Robert Drehmel + * 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 <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/param.h> +#include <sys/dirent.h> + +#include <machine/elf.h> +#include <machine/stdarg.h> + +#include "paths.h" + +#define READ_BUF_SIZE 8192 + +typedef int putc_func_t(char c, void *arg); +typedef int32_t ofwh_t; + +struct sp_data { + char *sp_buf; + u_int sp_len; + u_int sp_size; +}; + +static const char digits[] = "0123456789abcdef"; + +static char bootpath[128]; +static char bootargs[128]; + +static ofwh_t bootdev; + +static uint32_t fs_off; + +int main(int ac, char **av); +static void exit(int) __dead2; +static void usage(void); + +#ifdef ZFSBOOT +static void loadzfs(void); +static int zbread(char *buf, off_t off, size_t bytes); +#else +static void load(const char *); +#endif + +static void bcopy(const void *src, void *dst, size_t len); +static void bzero(void *b, size_t len); + +static int domount(const char *device); +static int dskread(void *buf, u_int64_t lba, int nblk); + +static void panic(const char *fmt, ...) __dead2; +static int printf(const char *fmt, ...); +static int putchar(char c, void *arg); +static int vprintf(const char *fmt, va_list ap); +static int vsnprintf(char *str, size_t sz, const char *fmt, va_list ap); + +static int __printf(const char *fmt, putc_func_t *putc, void *arg, va_list ap); +static int __puts(const char *s, putc_func_t *putc, void *arg); +static int __sputc(char c, void *arg); +static char *__uitoa(char *buf, u_int val, int base); +static char *__ultoa(char *buf, u_long val, int base); + +/* + * Open Firmware interface functions + */ +typedef u_int64_t ofwcell_t; +typedef u_int32_t u_ofwh_t; +typedef int (*ofwfp_t)(ofwcell_t []); +static ofwfp_t ofw; /* the PROM Open Firmware entry */ + +void ofw_init(int, int, int, int, ofwfp_t); +static ofwh_t ofw_finddevice(const char *); +static ofwh_t ofw_open(const char *); +static int ofw_getprop(ofwh_t, const char *, void *, size_t); +static int ofw_read(ofwh_t, void *, size_t); +static int ofw_write(ofwh_t, const void *, size_t); +static int ofw_seek(ofwh_t, u_int64_t); +static void ofw_exit(void) __dead2; + +static ofwh_t stdinh, stdouth; + +/* + * This has to stay here, as the PROM seems to ignore the + * entry point specified in the a.out header. (or elftoaout is broken) + */ + +void +ofw_init(int d, int d1, int d2, int d3, ofwfp_t ofwaddr) +{ + ofwh_t chosenh; + char *av[16]; + char *p; + int ac; + + ofw = ofwaddr; + + chosenh = ofw_finddevice("/chosen"); + ofw_getprop(chosenh, "stdin", &stdinh, sizeof(stdinh)); + ofw_getprop(chosenh, "stdout", &stdouth, sizeof(stdouth)); + ofw_getprop(chosenh, "bootargs", bootargs, sizeof(bootargs)); + ofw_getprop(chosenh, "bootpath", bootpath, sizeof(bootpath)); + + bootargs[sizeof(bootargs) - 1] = '\0'; + bootpath[sizeof(bootpath) - 1] = '\0'; + + ac = 0; + p = bootargs; + for (;;) { + while (*p == ' ' && *p != '\0') + p++; + if (*p == '\0' || ac >= 16) + break; + av[ac++] = p; + while (*p != ' ' && *p != '\0') + p++; + if (*p != '\0') + *p++ = '\0'; + } + + exit(main(ac, av)); +} + +static ofwh_t +ofw_finddevice(const char *name) +{ + ofwcell_t args[] = { + (ofwcell_t)"finddevice", + 1, + 1, + (ofwcell_t)name, + 0 + }; + + if ((*ofw)(args)) { + printf("ofw_finddevice: name=\"%s\"\n", name); + return (1); + } + return (args[4]); +} + +static int +ofw_getprop(ofwh_t ofwh, const char *name, void *buf, size_t len) +{ + ofwcell_t args[] = { + (ofwcell_t)"getprop", + 4, + 1, + (u_ofwh_t)ofwh, + (ofwcell_t)name, + (ofwcell_t)buf, + len, + 0 + }; + + if ((*ofw)(args)) { + printf("ofw_getprop: ofwh=0x%x buf=%p len=%u\n", + ofwh, buf, len); + return (1); + } + return (0); +} + +static ofwh_t +ofw_open(const char *path) +{ + ofwcell_t args[] = { + (ofwcell_t)"open", + 1, + 1, + (ofwcell_t)path, + 0 + }; + + if ((*ofw)(args)) { + printf("ofw_open: path=\"%s\"\n", path); + return (-1); + } + return (args[4]); +} + +static int +ofw_close(ofwh_t devh) +{ + ofwcell_t args[] = { + (ofwcell_t)"close", + 1, + 0, + (u_ofwh_t)devh + }; + + if ((*ofw)(args)) { + printf("ofw_close: devh=0x%x\n", devh); + return (1); + } + return (0); +} + +static int +ofw_read(ofwh_t devh, void *buf, size_t len) +{ + ofwcell_t args[] = { + (ofwcell_t)"read", + 3, + 1, + (u_ofwh_t)devh, + (ofwcell_t)buf, + len, + 0 + }; + + if ((*ofw)(args)) { + printf("ofw_read: devh=0x%x buf=%p len=%u\n", devh, buf, len); + return (1); + } + return (0); +} + +static int +ofw_write(ofwh_t devh, const void *buf, size_t len) +{ + ofwcell_t args[] = { + (ofwcell_t)"write", + 3, + 1, + (u_ofwh_t)devh, + (ofwcell_t)buf, + len, + 0 + }; + + if ((*ofw)(args)) { + printf("ofw_write: devh=0x%x buf=%p len=%u\n", devh, buf, len); + return (1); + } + return (0); +} + +static int +ofw_seek(ofwh_t devh, u_int64_t off) +{ + ofwcell_t args[] = { + (ofwcell_t)"seek", + 3, + 1, + (u_ofwh_t)devh, + off >> 32, + off, + 0 + }; + + if ((*ofw)(args)) { + printf("ofw_seek: devh=0x%x off=0x%lx\n", devh, off); + return (1); + } + return (0); +} + +static void +ofw_exit(void) +{ + ofwcell_t args[3]; + + args[0] = (ofwcell_t)"exit"; + args[1] = 0; + args[2] = 0; + + for (;;) + (*ofw)(args); +} + +static void +bcopy(const void *src, void *dst, size_t len) +{ + const char *s = src; + char *d = dst; + + while (len-- != 0) + *d++ = *s++; +} + +static void +memcpy(void *dst, const void *src, size_t len) +{ + + bcopy(src, dst, len); +} + +static void +bzero(void *b, size_t len) +{ + char *p = b; + + while (len-- != 0) + *p++ = 0; +} + +static int +strcmp(const char *s1, const char *s2) +{ + + for (; *s1 == *s2 && *s1; s1++, s2++) + ; + return ((u_char)*s1 - (u_char)*s2); +} + +int +main(int ac, char **av) +{ + const char *path; + int i; + + path = PATH_LOADER; + for (i = 0; i < ac; i++) { + switch (av[i][0]) { + case '-': + switch (av[i][1]) { + default: + usage(); + } + break; + default: + path = av[i]; + break; + } + } + +#ifdef ZFSBOOT + printf(" \n>> FreeBSD/sparc64 ZFS boot block\n Boot path: %s\n", + bootpath); +#else + printf(" \n>> FreeBSD/sparc64 boot block\n Boot path: %s\n" + " Boot loader: %s\n", bootpath, path); +#endif + + if (domount(bootpath) == -1) + panic("domount"); + +#ifdef ZFSBOOT + loadzfs(); +#else + load(path); +#endif + return (1); +} + +static void +usage(void) +{ + + printf("usage: boot device [/path/to/loader]\n"); + exit(1); +} + +static void +exit(int code) +{ + + ofw_exit(); +} + +#ifdef ZFSBOOT + +#define VDEV_BOOT_OFFSET (2 * 256 * 1024) +static char zbuf[READ_BUF_SIZE]; + +static int +zbread(char *buf, off_t off, size_t bytes) +{ + size_t len; + off_t poff; + off_t soff; + char *p; + unsigned int nb; + unsigned int lb; + + p = buf; + soff = VDEV_BOOT_OFFSET + off; + lb = howmany(soff + bytes, DEV_BSIZE); + poff = soff; + while (poff < soff + bytes) { + nb = lb - poff / DEV_BSIZE; + if (nb > READ_BUF_SIZE / DEV_BSIZE) + nb = READ_BUF_SIZE / DEV_BSIZE; + if (dskread(zbuf, poff / DEV_BSIZE, nb)) + break; + if ((poff / DEV_BSIZE + nb) * DEV_BSIZE > soff + bytes) + len = soff + bytes - poff; + else + len = (poff / DEV_BSIZE + nb) * DEV_BSIZE - poff; + memcpy(p, zbuf + poff % DEV_BSIZE, len); + p += len; + poff += len; + } + return (poff - soff); +} + +static void +loadzfs(void) +{ + Elf64_Ehdr eh; + Elf64_Phdr ph; + caddr_t p; + int i; + + if (zbread((char *)&eh, 0, sizeof(eh)) != sizeof(eh)) { + printf("Can't read elf header\n"); + return; + } + if (!IS_ELF(eh)) { + printf("Not an ELF file\n"); + return; + } + for (i = 0; i < eh.e_phnum; i++) { + fs_off = eh.e_phoff + i * eh.e_phentsize; + if (zbread((char *)&ph, fs_off, sizeof(ph)) != sizeof(ph)) { + printf("Can't read program header %d\n", i); + return; + } + if (ph.p_type != PT_LOAD) + continue; + fs_off = ph.p_offset; + p = (caddr_t)ph.p_vaddr; + if (zbread(p, fs_off, ph.p_filesz) != ph.p_filesz) { + printf("Can't read content of section %d\n", i); + return; + } + if (ph.p_filesz != ph.p_memsz) + bzero(p + ph.p_filesz, ph.p_memsz - ph.p_filesz); + } + ofw_close(bootdev); + (*(void (*)(int, int, int, int, ofwfp_t))eh.e_entry)(0, 0, 0, 0, ofw); +} + +#else + +#include "ufsread.c" + +static struct dmadat __dmadat; + +static void +load(const char *fname) +{ + Elf64_Ehdr eh; + Elf64_Phdr ph; + caddr_t p; + ufs_ino_t ino; + int i; + + if ((ino = lookup(fname)) == 0) { + printf("File %s not found\n", fname); + return; + } + if (fsread(ino, &eh, sizeof(eh)) != sizeof(eh)) { + printf("Can't read elf header\n"); + return; + } + if (!IS_ELF(eh)) { + printf("Not an ELF file\n"); + return; + } + for (i = 0; i < eh.e_phnum; i++) { + fs_off = eh.e_phoff + i * eh.e_phentsize; + if (fsread(ino, &ph, sizeof(ph)) != sizeof(ph)) { + printf("Can't read program header %d\n", i); + return; + } + if (ph.p_type != PT_LOAD) + continue; + fs_off = ph.p_offset; + p = (caddr_t)ph.p_vaddr; + if (fsread(ino, p, ph.p_filesz) != ph.p_filesz) { + printf("Can't read content of section %d\n", i); + return; + } + if (ph.p_filesz != ph.p_memsz) + bzero(p + ph.p_filesz, ph.p_memsz - ph.p_filesz); + } + ofw_close(bootdev); + (*(void (*)(int, int, int, int, ofwfp_t))eh.e_entry)(0, 0, 0, 0, ofw); +} + +#endif /* ZFSBOOT */ + +static int +domount(const char *device) +{ + + if ((bootdev = ofw_open(device)) == -1) { + printf("domount: can't open device\n"); + return (-1); + } +#ifndef ZFSBOOT + dmadat = &__dmadat; + if (fsread(0, NULL, 0)) { + printf("domount: can't read superblock\n"); + return (-1); + } +#endif + return (0); +} + +static int +dskread(void *buf, u_int64_t lba, int nblk) +{ + + /* + * The Open Firmware should open the correct partition for us. + * That means, if we read from offset zero on an open instance handle, + * we should read from offset zero of that partition. + */ + ofw_seek(bootdev, lba * DEV_BSIZE); + ofw_read(bootdev, buf, nblk * DEV_BSIZE); + return (0); +} + +static void +panic(const char *fmt, ...) +{ + char buf[128]; + va_list ap; + + va_start(ap, fmt); + vsnprintf(buf, sizeof buf, fmt, ap); + printf("panic: %s\n", buf); + va_end(ap); + + exit(1); +} + +static int +printf(const char *fmt, ...) +{ + va_list ap; + int ret; + + va_start(ap, fmt); + ret = vprintf(fmt, ap); + va_end(ap); + return (ret); +} + +static int +putchar(char c, void *arg) +{ + char buf; + + if (c == '\n') { + buf = '\r'; + ofw_write(stdouth, &buf, 1); + } + buf = c; + ofw_write(stdouth, &buf, 1); + return (1); +} + +static int +vprintf(const char *fmt, va_list ap) +{ + int ret; + + ret = __printf(fmt, putchar, 0, ap); + return (ret); +} + +static int +vsnprintf(char *str, size_t sz, const char *fmt, va_list ap) +{ + struct sp_data sp; + int ret; + + sp.sp_buf = str; + sp.sp_len = 0; + sp.sp_size = sz; + ret = __printf(fmt, __sputc, &sp, ap); + return (ret); +} + +static int +__printf(const char *fmt, putc_func_t *putc, void *arg, va_list ap) +{ + char buf[(sizeof(long) * 8) + 1]; + char *nbuf; + u_long ul; + u_int ui; + int lflag; + int sflag; + char *s; + int pad; + int ret; + int c; + + nbuf = &buf[sizeof buf - 1]; + ret = 0; + while ((c = *fmt++) != 0) { + if (c != '%') { + ret += putc(c, arg); + continue; + } + lflag = 0; + sflag = 0; + pad = 0; +reswitch: c = *fmt++; + switch (c) { + case '#': + sflag = 1; + goto reswitch; + case '%': + ret += putc('%', arg); + break; + case 'c': + c = va_arg(ap, int); + ret += putc(c, arg); + break; + case 'd': + if (lflag == 0) { + ui = (u_int)va_arg(ap, int); + if (ui < (int)ui) { + ui = -ui; + ret += putc('-', arg); + } + s = __uitoa(nbuf, ui, 10); + } else { + ul = (u_long)va_arg(ap, long); + if (ul < (long)ul) { + ul = -ul; + ret += putc('-', arg); + } + s = __ultoa(nbuf, ul, 10); + } + ret += __puts(s, putc, arg); + break; + case 'l': + lflag = 1; + goto reswitch; + case 'o': + if (lflag == 0) { + ui = (u_int)va_arg(ap, u_int); + s = __uitoa(nbuf, ui, 8); + } else { + ul = (u_long)va_arg(ap, u_long); + s = __ultoa(nbuf, ul, 8); + } + ret += __puts(s, putc, arg); + break; + case 'p': + ul = (u_long)va_arg(ap, void *); + s = __ultoa(nbuf, ul, 16); + ret += __puts("0x", putc, arg); + ret += __puts(s, putc, arg); + break; + case 's': + s = va_arg(ap, char *); + ret += __puts(s, putc, arg); + break; + case 'u': + if (lflag == 0) { + ui = va_arg(ap, u_int); + s = __uitoa(nbuf, ui, 10); + } else { + ul = va_arg(ap, u_long); + s = __ultoa(nbuf, ul, 10); + } + ret += __puts(s, putc, arg); + break; + case 'x': + if (lflag == 0) { + ui = va_arg(ap, u_int); + s = __uitoa(nbuf, ui, 16); + } else { + ul = va_arg(ap, u_long); + s = __ultoa(nbuf, ul, 16); + } + if (sflag) + ret += __puts("0x", putc, arg); + ret += __puts(s, putc, arg); + break; + case '0': case '1': case '2': case '3': case '4': + case '5': case '6': case '7': case '8': case '9': + pad = pad * 10 + c - '0'; + goto reswitch; + default: + break; + } + } + return (ret); +} + +static int +__sputc(char c, void *arg) +{ + struct sp_data *sp; + + sp = arg; + if (sp->sp_len < sp->sp_size) + sp->sp_buf[sp->sp_len++] = c; + sp->sp_buf[sp->sp_len] = '\0'; + return (1); +} + +static int +__puts(const char *s, putc_func_t *putc, void *arg) +{ + const char *p; + int ret; + + ret = 0; + for (p = s; *p != '\0'; p++) + ret += putc(*p, arg); + return (ret); +} + +static char * +__uitoa(char *buf, u_int ui, int base) +{ + char *p; + + p = buf; + *p = '\0'; + do + *--p = digits[ui % base]; + while ((ui /= base) != 0); + return (p); +} + +static char * +__ultoa(char *buf, u_long ul, int base) +{ + char *p; + + p = buf; + *p = '\0'; + do + *--p = digits[ul % base]; + while ((ul /= base) != 0); + return (p); +} |