2008-10-06 19:38:10 +00:00
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/*-
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* Copyright (c) 2008 John Hay
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* Copyright (c) 1998 Robert Nordier
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms are freely
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* permitted provided that the above copyright notice and this
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* paragraph and the following disclaimer are duplicated in all
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* such forms.
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*
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* This software is provided "AS IS" and without any express or
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* implied warranties, including, without limitation, the implied
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* warranties of merchantability and fitness for a particular
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* purpose.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/disklabel.h>
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#include <sys/diskmbr.h>
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#include <sys/dirent.h>
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#include <sys/reboot.h>
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#include <machine/elf.h>
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#include <stdarg.h>
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#include "lib.h"
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#define RBX_ASKNAME 0x0 /* -a */
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#define RBX_SINGLE 0x1 /* -s */
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/* 0x2 is reserved for log2(RB_NOSYNC). */
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/* 0x3 is reserved for log2(RB_HALT). */
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/* 0x4 is reserved for log2(RB_INITNAME). */
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#define RBX_DFLTROOT 0x5 /* -r */
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/* #define RBX_KDB 0x6 -d */
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/* 0x7 is reserved for log2(RB_RDONLY). */
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/* 0x8 is reserved for log2(RB_DUMP). */
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/* 0x9 is reserved for log2(RB_MINIROOT). */
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#define RBX_CONFIG 0xa /* -c */
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#define RBX_VERBOSE 0xb /* -v */
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/* #define RBX_SERIAL 0xc -h */
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/* #define RBX_CDROM 0xd -C */
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/* 0xe is reserved for log2(RB_POWEROFF). */
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#define RBX_GDB 0xf /* -g */
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/* #define RBX_MUTE 0x10 -m */
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/* 0x11 is reserved for log2(RB_SELFTEST). */
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/* 0x12 is reserved for boot programs. */
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/* 0x13 is reserved for boot programs. */
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/* #define RBX_PAUSE 0x14 -p */
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/* #define RBX_QUIET 0x15 -q */
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#define RBX_NOINTR 0x1c /* -n */
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/* 0x1d is reserved for log2(RB_MULTIPLE) and is just misnamed here. */
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/* #define RBX_DUAL 0x1d -D */
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/* 0x1f is reserved for log2(RB_BOOTINFO). */
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/* pass: -a, -s, -r, -v, -g */
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#define RBX_MASK (OPT_SET(RBX_ASKNAME) | OPT_SET(RBX_SINGLE) | \
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OPT_SET(RBX_DFLTROOT) | \
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OPT_SET(RBX_VERBOSE) | \
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OPT_SET(RBX_GDB))
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2011-10-18 09:46:52 +00:00
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#define PATH_DOTCONFIG "/boot.config"
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#define PATH_CONFIG "/boot/config"
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2008-10-06 19:38:10 +00:00
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#define PATH_KERNEL "/boot/kernel/kernel"
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extern uint32_t _end;
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#define NOPT 6
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#define OPT_SET(opt) (1 << (opt))
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#define OPT_CHECK(opt) ((opts) & OPT_SET(opt))
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static const char optstr[NOPT] = "agnrsv";
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static const unsigned char flags[NOPT] = {
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RBX_ASKNAME,
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RBX_GDB,
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RBX_NOINTR,
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RBX_DFLTROOT,
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RBX_SINGLE,
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RBX_VERBOSE
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};
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static unsigned dsk_start;
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static char cmd[512];
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static char kname[1024];
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static uint32_t opts;
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2011-10-04 00:15:40 +00:00
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static uint8_t dsk_meta;
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2008-10-06 19:38:10 +00:00
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static int bootslice;
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static int bootpart;
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static int disk_layout;
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#define DL_UNKNOWN 0
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#define DL_RAW 1 /* Dangerously dedicated */
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#define DL_SLICE 2 /* Use only slices (DOS partitions) */
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#define DL_SLICEPART 3 /* Use slices and partitions */
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static void load(void);
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static int parse(void);
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static int dskread(void *, unsigned, unsigned);
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static int drvread(void *, unsigned, unsigned);
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#ifdef FIXUP_BOOT_DRV
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static void fixup_boot_drv(caddr_t, int, int, int);
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#endif
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#include "ufsread.c"
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#ifdef DEBUG
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#define DPRINTF(fmt, ...) printf(fmt, __VA_ARGS__)
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#else
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#define DPRINTF(fmt, ...)
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#endif
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static inline int
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2012-05-25 09:36:39 +00:00
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xfsread(ufs_ino_t inode, void *buf, size_t nbyte)
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2008-10-06 19:38:10 +00:00
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{
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if ((size_t)fsread(inode, buf, nbyte) != nbyte)
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return -1;
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return 0;
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}
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static inline void
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getstr(int c)
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{
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char *s;
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s = cmd;
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if (c == 0)
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c = getc(10000);
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for (;;) {
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switch (c) {
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case 0:
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break;
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case '\177':
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case '\b':
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if (s > cmd) {
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s--;
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printf("\b \b");
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}
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break;
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case '\n':
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case '\r':
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*s = 0;
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return;
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default:
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if (s - cmd < sizeof(cmd) - 1)
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*s++ = c;
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xputchar(c);
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}
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2008-10-07 17:27:37 +00:00
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c = getc(10000);
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2008-10-06 19:38:10 +00:00
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}
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}
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int
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main(void)
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{
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const char *bt;
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int autoboot, c = 0;
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2012-05-25 09:36:39 +00:00
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ufs_ino_t ino;
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2008-10-06 19:38:10 +00:00
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dmadat = (void *)(0x1c0000);
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p_memset((char *)dmadat, 0, 32 * 1024);
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bt = board_init();
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2008-12-13 02:56:08 +00:00
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printf("FreeBSD ARM (%s) boot2 v%d.%d\n", bt, 0, 4);
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2008-10-06 19:38:10 +00:00
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autoboot = 1;
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/* Process configuration file */
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2011-10-18 09:46:52 +00:00
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if ((ino = lookup(PATH_CONFIG)) ||
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(ino = lookup(PATH_DOTCONFIG)))
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2008-10-06 19:38:10 +00:00
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fsread(ino, cmd, sizeof(cmd));
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if (*cmd) {
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if (parse())
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autoboot = 0;
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printf("%s: %s\n", PATH_CONFIG, cmd);
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/* Do not process this command twice */
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*cmd = 0;
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}
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if (*kname == '\0')
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strcpy(kname, PATH_KERNEL);
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/* Present the user with the boot2 prompt. */
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for (;;) {
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printf("\nDefault: %s\nboot: ", kname);
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if (!autoboot ||
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(OPT_CHECK(RBX_NOINTR) == 0 && (c = getc(2)) != 0))
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getstr(c);
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xputchar('\n');
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autoboot = 0;
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c = 0;
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DPRINTF("cmd is '%s'\n", cmd);
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if (parse())
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xputchar('\a');
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else
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load();
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}
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}
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static void
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load(void)
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{
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Elf32_Ehdr eh;
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static Elf32_Phdr ep[2];
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caddr_t p;
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2012-05-25 09:36:39 +00:00
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ufs_ino_t ino;
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2008-10-06 19:38:10 +00:00
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uint32_t addr;
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int i, j;
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#ifdef FIXUP_BOOT_DRV
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caddr_t staddr;
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int klen;
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staddr = (caddr_t)0xffffffff;
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klen = 0;
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#endif
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if (!(ino = lookup(kname))) {
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if (!ls)
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printf("No %s\n", kname);
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return;
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}
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DPRINTF("Found %s\n", kname);
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if (xfsread(ino, &eh, sizeof(eh)))
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return;
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if (!IS_ELF(eh)) {
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printf("Invalid %s\n", "format");
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return;
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}
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fs_off = eh.e_phoff;
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for (j = i = 0; i < eh.e_phnum && j < 2; i++) {
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if (xfsread(ino, ep + j, sizeof(ep[0])))
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return;
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if (ep[j].p_type == PT_LOAD)
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j++;
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}
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for (i = 0; i < 2; i++) {
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p = (caddr_t)(ep[i].p_paddr & 0x0fffffff);
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fs_off = ep[i].p_offset;
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#ifdef FIXUP_BOOT_DRV
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if (staddr == (caddr_t)0xffffffff)
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staddr = p;
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klen += ep[i].p_filesz;
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#endif
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if (xfsread(ino, p, ep[i].p_filesz))
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return;
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}
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addr = eh.e_entry & 0x0fffffff;
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DPRINTF("Entry point %x for %s\n", addr, kname);
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clr_board();
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#ifdef FIXUP_BOOT_DRV
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fixup_boot_drv(staddr, klen, bootslice, bootpart);
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#endif
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((void(*)(int))addr)(RB_BOOTINFO /* XXX | (opts & RBX_MASK) */);
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}
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static int
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parse()
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{
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char *arg = cmd;
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char *ep, *p;
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int c, i;
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while ((c = *arg++)) {
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if (c == ' ' || c == '\t' || c == '\n')
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continue;
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for (p = arg; *p && *p != '\n' && *p != ' ' && *p != '\t'; p++);
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ep = p;
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if (*p)
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*p++ = 0;
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if (c == '-') {
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while ((c = *arg++)) {
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for (i = 0; c != optstr[i]; i++)
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if (i == NOPT - 1)
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return -1;
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opts ^= OPT_SET(flags[i]);
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}
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} else {
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arg--;
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/* look for ad0s1a:... | ad0s1:... */
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if (strlen(arg) > 6 && arg[0] == 'a' &&
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arg[1] == 'd' && arg[3] == 's' &&
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(arg[5] == ':' || arg[6] == ':')) {
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/* XXX Should also handle disk. */
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bootslice = arg[4] - '0';
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if (bootslice < 1 || bootslice > 4)
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return (-1);
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bootpart = 0;
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if (arg[5] != ':')
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bootpart = arg[5] - 'a';
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if (bootpart < 0 || bootpart > 7)
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return (-1);
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dsk_meta = 0;
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if (arg[5] == ':')
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arg += 6;
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else
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arg += 7;
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/* look for ad0a:... */
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} else if (strlen(arg) > 4 && arg[0] == 'a' &&
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arg[1] == 'd' && arg[2] == '0' && arg[4] == ':') {
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bootslice = 0;
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bootpart = arg[3] - 'a';
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if (bootpart < 0 || bootpart > 7)
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return (-1);
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dsk_meta = 0;
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arg += 5;
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}
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if ((i = ep - arg)) {
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if ((size_t)i >= sizeof(kname))
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return -1;
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memcpy(kname, arg, i + 1);
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}
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}
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arg = p;
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}
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return 0;
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}
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/*
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* dskread() will try to handle the disk layouts that are typically
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* encountered.
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* - raw or "Dangerously Dedicated" mode. No real slice table, just the
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* default one that is included with bsdlabel -B. Typically this is
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* used with ROOTDEVNAME=\"ufs:ad0a\".
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* - slice only. Only a slice table is installed with no bsd label or
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* bsd partition table. This is typically used with
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* ROOTDEVNAME=\"ufs:ad0s1\".
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* - slice + bsd label + partition table. This is typically done with
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* with fdisk + bsdlabel and is used with ROOTDEVNAME=\"ufs:ad0s1a\".
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*/
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static int
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dskread(void *buf, unsigned lba, unsigned nblk)
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{
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struct dos_partition *dp;
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struct disklabel *d;
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char *sec;
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int i;
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if (!dsk_meta) {
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sec = dmadat->secbuf;
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dsk_start = 0;
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if (drvread(sec, DOSBBSECTOR, 1))
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return -1;
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dp = (void *)(sec + DOSPARTOFF);
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if (bootslice != 0) {
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i = bootslice - 1;
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if (dp[i].dp_typ != DOSPTYP_386BSD)
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return -1;
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} else {
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for (i = 0; i < NDOSPART; i++) {
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if ((dp[i].dp_typ == DOSPTYP_386BSD) &&
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(dp[i].dp_flag == 0x80))
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break;
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}
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}
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if (i != NDOSPART) {
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bootslice = i + 1;
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DPRINTF("Found an active fbsd slice. (%d)\n", i + 1);
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/*
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* Although dp_start is aligned within the disk
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* partition structure, DOSPARTOFF is 446, which
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* is only word (2) aligned, not longword (4)
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* aligned. Cope by using memcpy to fetch the
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|
|
* start of this partition.
|
|
|
|
*/
|
|
|
|
memcpy(&dsk_start, &dp[i].dp_start, 4);
|
|
|
|
dsk_start = swap32(dsk_start);
|
|
|
|
DPRINTF("dsk_start %x\n", dsk_start);
|
|
|
|
if ((bootslice == 4) && (dsk_start == 0)) {
|
|
|
|
disk_layout = DL_RAW;
|
|
|
|
bootslice = 0;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if (drvread(sec, dsk_start + LABELSECTOR, 1))
|
|
|
|
return -1;
|
|
|
|
d = (void *)(sec + LABELOFFSET);
|
|
|
|
if ((d->d_magic == DISKMAGIC && d->d_magic2 == DISKMAGIC) ||
|
|
|
|
(swap32(d->d_magic) == DISKMAGIC &&
|
|
|
|
swap32(d->d_magic2) == DISKMAGIC)) {
|
|
|
|
DPRINTF("p_size = %x\n",
|
|
|
|
!d->d_partitions[bootpart].p_size);
|
|
|
|
if (!d->d_partitions[bootpart].p_size) {
|
|
|
|
printf("Invalid partition\n");
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
DPRINTF("p_offset %x, RAW %x\n",
|
|
|
|
swap32(d->d_partitions[bootpart].p_offset),
|
|
|
|
swap32(d->d_partitions[RAW_PART].p_offset));
|
|
|
|
dsk_start += swap32(d->d_partitions[bootpart].p_offset);
|
|
|
|
dsk_start -= swap32(d->d_partitions[RAW_PART].p_offset);
|
|
|
|
if ((disk_layout == DL_UNKNOWN) && (bootslice == 0))
|
|
|
|
disk_layout = DL_RAW;
|
|
|
|
else if (disk_layout == DL_UNKNOWN)
|
|
|
|
disk_layout = DL_SLICEPART;
|
|
|
|
} else {
|
|
|
|
disk_layout = DL_SLICE;
|
|
|
|
DPRINTF("Invalid %s\n", "label");
|
|
|
|
}
|
|
|
|
DPRINTF("bootslice %d, bootpart %d, dsk_start %u\n", bootslice,
|
|
|
|
bootpart, dsk_start);
|
|
|
|
dsk_meta++;
|
|
|
|
}
|
|
|
|
return drvread(buf, dsk_start + lba, nblk);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
drvread(void *buf, unsigned lba, unsigned nblk)
|
|
|
|
{
|
|
|
|
static unsigned c = 0x2d5c7c2f;
|
|
|
|
|
|
|
|
printf("%c\b", c = c << 8 | c >> 24);
|
|
|
|
return (avila_read((char *)buf, lba, nblk));
|
|
|
|
}
|
|
|
|
|
|
|
|
#ifdef FIXUP_BOOT_DRV
|
|
|
|
/*
|
|
|
|
* fixup_boot_drv() will try to find the ROOTDEVNAME spec in the kernel
|
|
|
|
* and change it to what was specified on the comandline or /boot.conf
|
|
|
|
* file or to what was encountered on the disk. It will try to handle 3
|
|
|
|
* different disk layouts, raw (dangerously dedicated), slice only and
|
|
|
|
* slice + partition. It will look for the following strings in the
|
|
|
|
* kernel, but if it is one of the first three, the string in the kernel
|
|
|
|
* must use the correct form to match the actual disk layout:
|
|
|
|
* - ufs:ad0a
|
|
|
|
* - ufs:ad0s1
|
|
|
|
* - ufs:ad0s1a
|
|
|
|
* - ufs:ROOTDEVNAME
|
|
|
|
* In the case of the first three strings, only the "a" at the end and
|
|
|
|
* the "1" after the "s" will be modified, if they exist. The string
|
|
|
|
* length will not be changed. In the case of the last string, the
|
|
|
|
* whole string will be built up and nul, '\0' terminated.
|
|
|
|
*/
|
|
|
|
static void
|
|
|
|
fixup_boot_drv(caddr_t addr, int klen, int bs, int bp)
|
|
|
|
{
|
|
|
|
const u_int8_t op[] = "ufs:ROOTDEVNAME";
|
|
|
|
const u_int8_t op2[] = "ufs:ad0";
|
|
|
|
u_int8_t *p, *ps;
|
|
|
|
|
|
|
|
DPRINTF("fixup_boot_drv: 0x%x, %d, slice %d, partition %d\n",
|
|
|
|
(int)addr, klen, bs, bp);
|
|
|
|
if (bs > 4)
|
|
|
|
return;
|
|
|
|
if (bp > 7)
|
|
|
|
return;
|
|
|
|
ps = memmem(addr, klen, op, sizeof(op));
|
|
|
|
if (ps != NULL) {
|
|
|
|
p = ps + 4; /* past ufs: */
|
|
|
|
DPRINTF("Found it at 0x%x\n", (int)ps);
|
|
|
|
p[0] = 'a'; p[1] = 'd'; p[2] = '0'; /* ad0 */
|
|
|
|
p += 3;
|
|
|
|
if (bs > 0) {
|
|
|
|
/* append slice */
|
|
|
|
*p++ = 's';
|
|
|
|
*p++ = bs + '0';
|
|
|
|
}
|
|
|
|
if (disk_layout != DL_SLICE) {
|
|
|
|
/* append partition */
|
|
|
|
*p++ = bp + 'a';
|
|
|
|
}
|
|
|
|
*p = '\0';
|
|
|
|
} else {
|
|
|
|
ps = memmem(addr, klen, op2, sizeof(op2) - 1);
|
|
|
|
if (ps != NULL) {
|
|
|
|
p = ps + sizeof(op2) - 1;
|
|
|
|
DPRINTF("Found it at 0x%x\n", (int)ps);
|
|
|
|
if (*p == 's') {
|
|
|
|
/* fix slice */
|
|
|
|
p++;
|
|
|
|
*p++ = bs + '0';
|
|
|
|
}
|
|
|
|
if (*p == 'a')
|
|
|
|
*p = bp + 'a';
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if (ps == NULL) {
|
|
|
|
printf("Could not locate \"%s\" to fix kernel boot device, "
|
|
|
|
"check ROOTDEVNAME is set\n", op);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
DPRINTF("Changed boot device to %s\n", ps);
|
|
|
|
}
|
|
|
|
#endif
|