2 * Copyright (c) 2013-2014 Robert N. M. Watson
5 * This software was developed by SRI International and the University of
6 * Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237)
7 * ("CTSRD"), as part of the DARPA CRASH research programme.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * Copyright (c) 1998 Robert Nordier
31 * All rights reserved.
33 * Redistribution and use in source and binary forms are freely
34 * permitted provided that the above copyright notice and this
35 * paragraph and the following disclaimer are duplicated in all
38 * This software is provided "AS IS" and without any express or
39 * implied warranties, including, without limitation, the implied
40 * warranties of merchantability and fitness for a particular
44 #include <sys/cdefs.h>
45 __FBSDID("$FreeBSD$");
47 #include <sys/param.h>
48 #include <sys/disklabel.h>
49 #include <sys/diskmbr.h>
50 #include <sys/dirent.h>
51 #include <sys/endian.h>
52 #include <sys/reboot.h>
54 #include <machine/bootinfo.h>
55 #include <machine/elf.h>
71 static const char **beri_argv, **beri_envv;
72 static uint64_t beri_memsize;
77 #define SECOND 1 /* Circa that many ticks in a second. */
85 * XXXRW: I think this has to do with whether boot2 expects a partition
91 /* Default to using CFI flash. */
92 #define TYPE_DEFAULT BOOTINFO_DEV_TYPE_SDCARD
94 /* Hard-coded assumption about location of JTAG-loaded kernel. */
95 #define DRAM_KERNEL_ADDR ((void *)mips_phys_to_cached(0x20000))
99 static const char optstr[NOPT] = "DhaCcdgmnpqrsv"; /* Also 'P', 'S' */
100 static const unsigned char flags[NOPT] = {
117 /* These must match BOOTINFO_DEV_TYPE constants. */
118 static const char *const dev_nm[] = {"dram", "cfi", "sdcard"};
119 static const u_int dev_nm_count = nitems(dev_nm);
122 unsigned type; /* BOOTINFO_DEV_TYPE_x object type. */
123 uintptr_t unitptr; /* Unit number or pointer to object. */
131 static char cmd[512], cmddup[512], knamebuf[1024];
132 static const char *kname;
135 static int comspeed = SIOSPD;
137 struct bootinfo bootinfo;
138 static uint8_t ioctrl = IO_KEYBOARD;
141 static void boot_fromdram(void);
142 static void boot_fromfs(void);
143 static void load(void);
144 static int parse(void);
145 static int dskread(void *, unsigned, unsigned);
146 static int xputc(int);
147 static int xgetc(int);
149 #define UFS_SMALL_CGBASE
152 static struct dmadat __dmadat;
155 xfsread(ufs_ino_t inode, void *buf, size_t nbyte)
157 if ((size_t)fsread(inode, buf, nbyte) != nbyte) {
158 printf("Invalid %s\n", "format");
172 switch (c = xgetc(0)) {
188 if (s - cmd < sizeof(cmd) - 1)
196 main(u_int argc, const char *argv[], const char *envv[], uint64_t memsize)
202 /* Arguments from Miniboot. */
206 beri_memsize = memsize;
210 /* XXXRW: more here. */
212 v86.efl = PSL_RESERVED_DEFAULT | PSL_I;
213 dsk.drive = *(uint8_t *)PTOV(ARGS);
215 dsk.type = TYPE_DEFAULT;
217 dsk.unit = dsk.drive & DRV_MASK;
218 dsk.slice = *(uint8_t *)PTOV(ARGS + 1) + 1;
220 bootinfo.bi_version = BOOTINFO_VERSION;
221 bootinfo.bi_size = sizeof(bootinfo);
223 /* Process configuration file */
227 if ((ino = lookup(PATH_CONFIG)) ||
228 (ino = lookup(PATH_DOTCONFIG))) {
229 nbyte = fsread(ino, cmd, sizeof(cmd) - 1);
234 memcpy(cmddup, cmd, sizeof(cmd));
237 if (!OPT_CHECK(RBX_QUIET))
238 printf("%s: %s", PATH_CONFIG, cmddup);
239 /* Do not process this command twice */
244 * Try to exec stage 3 boot loader. If interrupted by a keypress,
245 * or in case of failure, try to load a kernel directly instead.
250 if (autoboot && !keyhit(3*SECOND)) {
256 /* Present the user with the boot2 prompt. */
259 if (!autoboot || !OPT_CHECK(RBX_QUIET))
260 printf("\nFreeBSD/mips boot\n"
261 "Default: %s%ju:%s\n"
263 dev_nm[dsk.type], dsk.unitptr, kname);
265 if (ioctrl & IO_SERIAL)
268 if (!autoboot || keyhit(3*SECOND))
270 else if (!autoboot || !OPT_CHECK(RBX_QUIET))
281 boot(void *entryp, int argc, const char *argv[], const char *envv[])
284 bootinfo.bi_kernelname = (bi_ptr_t)kname;
285 bootinfo.bi_boot2opts = opts & RBX_MASK;
286 bootinfo.bi_boot_dev_type = dsk.type;
287 bootinfo.bi_boot_dev_unitptr = dsk.unitptr;
288 bootinfo.bi_memsize = beri_memsize;
291 * XXXRW: A possible future way to distinguish Miniboot passing a memory
294 if (beri_memsize <= BERI_MEMVSDTB)
295 bootinfo.bi_memsize = beri_memsize;
297 bootinfo.bi_dtb = beri_memsize;
299 ((void(*)(int, const char **, const char **, void *))entryp)(argc, argv,
304 * Boot a kernel that has mysteriously (i.e., by JTAG) appeared in DRAM;
305 * assume that it is already properly relocated, etc, and invoke its entry
306 * address without question or concern.
311 void *kaddr = DRAM_KERNEL_ADDR; /* XXXRW: Something better here. */
312 Elf64_Ehdr *ehp = kaddr;
315 printf("Invalid %s\n", "format");
318 boot((void *)ehp->e_entry, beri_argc, beri_argv, beri_envv);
327 static Elf64_Phdr ep[2];
329 static Elf64_Shdr es[2];
336 if (!(ino = lookup(kname))) {
338 printf("No %s\n", kname);
341 if (xfsread(ino, &hdr, sizeof(hdr)))
344 if (IS_ELF(hdr.eh)) {
345 fs_off = hdr.eh.e_phoff;
346 for (j = i = 0; i < hdr.eh.e_phnum && j < 2; i++) {
347 if (xfsread(ino, ep + j, sizeof(ep[0])))
349 if (ep[j].p_type == PT_LOAD)
352 for (i = 0; i < 2; i++) {
353 p = (caddr_t)ep[i].p_paddr;
354 fs_off = ep[i].p_offset;
355 if (xfsread(ino, p, ep[i].p_filesz))
358 p += roundup2(ep[1].p_memsz, PAGE_SIZE);
360 bootinfo.bi_symtab = VTOP(p);
361 if (hdr.eh.e_shnum == hdr.eh.e_shstrndx + 3) {
362 fs_off = hdr.eh.e_shoff + sizeof(es[0]) *
363 (hdr.eh.e_shstrndx + 1);
364 if (xfsread(ino, &es, sizeof(es)))
366 for (i = 0; i < 2; i++) {
367 *(Elf32_Word *)p = es[i].sh_size;
368 p += sizeof(es[i].sh_size);
369 fs_off = es[i].sh_offset;
370 if (xfsread(ino, p, es[i].sh_size))
376 addr = hdr.eh.e_entry;
378 bootinfo.bi_esymtab = VTOP(p);
381 printf("Invalid %s\n", "format");
384 boot((void *)addr, beri_argc, beri_argv, beri_envv);
392 case BOOTINFO_DEV_TYPE_DRAM:
416 while ((c = *arg++)) {
417 if (c == ' ' || c == '\t' || c == '\n')
419 for (p = arg; *p && *p != '\n' && *p != ' ' && *p != '\t'; p++);
424 while ((c = *arg++)) {
429 opts |= OPT_SET(RBX_DUAL) | OPT_SET(RBX_SERIAL);
433 printf("Keyboard: %s\n", cp);
436 } else if (c == 'S') {
438 while ((unsigned int)(i = *arg++ - '0') <= 9)
440 if (j > 0 && i == -'0') {
444 /* Fall through to error below ('S' not in optstr[]). */
447 for (i = 0; c != optstr[i]; i++)
450 opts ^= OPT_SET(flags[i]);
452 ioctrl = OPT_CHECK(RBX_DUAL) ? (IO_SERIAL|IO_KEYBOARD) :
453 OPT_CHECK(RBX_SERIAL) ? IO_SERIAL : IO_KEYBOARD;
455 if (ioctrl & IO_SERIAL) {
456 if (sio_init(115200 / comspeed) != 0)
457 ioctrl &= ~IO_SERIAL;
462 * Parse a device/kernel name. Format(s):
467 * NB: Utterly incomprehensible but space-efficient ARM/i386
468 * parsing removed in favour of larger but easier-to-read C. This
469 * is still not great, however -- e.g., relating to unit handling.
471 * TODO: it would be nice if a DRAM pointer could be specified
474 * XXXRW: Pick up pieces here.
478 * Search for a parens; if none, then it's just a path.
479 * Otherwise, it's a devicename.
482 q = strsep(&arg, ":");
486 printf("Invalid device: name too short\n");
491 * First, handle one-digit unit.
494 if (unit < '0' || unit > '9') {
495 printf("Invalid device: invalid unit %c\n",
503 * Next, find matching device.
505 for (i = 0; i < dev_nm_count; i++) {
506 if (strcmp(q, dev_nm[i]) == 0)
509 if (i == dev_nm_count) {
510 printf("Invalid device: no driver match\n");
514 dsk.unitptr = unit; /* Someday: also a DRAM pointer? */
517 if ((i = ep - arg)) {
518 if ((size_t)i >= sizeof(knamebuf))
520 memcpy(knamebuf, arg, i + 1);
530 drvread(void *buf, unsigned lba, unsigned nblk)
533 /* XXXRW: eventually, we may want to pass 'drive' and 'unit' here. */
535 case BOOTINFO_DEV_TYPE_CFI:
536 return (cfi_read(buf, lba, nblk));
538 case BOOTINFO_DEV_TYPE_SDCARD:
539 return (altera_sdcard_read(buf, lba, nblk));
547 dskread(void *buf, unsigned lba, unsigned nblk)
551 * XXXRW: For now, assume no partition table around the file system; it's
554 struct dos_partition *dp;
561 sec = dmadat->secbuf;
563 if (drvread(sec, DOSBBSECTOR, 1))
565 dp = (void *)(sec + DOSPARTOFF);
567 if (sl < BASE_SLICE) {
568 for (i = 0; i < NDOSPART; i++)
569 if (dp[i].dp_typ == DOSPTYP_386BSD &&
570 (dp[i].dp_flag & 0x80 || sl < BASE_SLICE)) {
572 if (dp[i].dp_flag & 0x80 ||
573 dsk.slice == COMPATIBILITY_SLICE)
576 if (dsk.slice == WHOLE_DISK_SLICE)
579 if (sl != WHOLE_DISK_SLICE) {
580 if (sl != COMPATIBILITY_SLICE)
581 dp += sl - BASE_SLICE;
582 if (dp->dp_typ != DOSPTYP_386BSD) {
583 printf("Invalid %s\n", "slice");
586 dsk.start = le32toh(dp->dp_start);
588 if (drvread(sec, dsk.start + LABELSECTOR, 1))
590 d = (void *)(sec + LABELOFFSET);
591 if (le32toh(d->d_magic) != DISKMAGIC ||
592 le32toh(d->d_magic2) != DISKMAGIC) {
593 if (dsk.part != RAW_PART) {
594 printf("Invalid %s\n", "label");
599 if (le16toh(d->d_type) == DTYPE_SCSI)
603 if (dsk.part >= le16toh(d->d_npartitions) ||
604 !(le32toh(d->d_partitions[dsk.part].p_size))) {
605 printf("Invalid %s\n", "partition");
608 dsk.start += le32toh(d->d_partitions[dsk.part].p_offset);
609 dsk.start -= le32toh(d->d_partitions[RAW_PART].p_offset);
612 return drvread(buf, dsk.start + lba, nblk);
614 return drvread(buf, lba, nblk);
629 if (ioctrl & IO_KEYBOARD)
632 if (ioctrl & IO_SERIAL)
641 if (OPT_CHECK(RBX_NOINTR))
644 if (ioctrl & IO_KEYBOARD && keyhit(0))
645 return fn ? 1 : beri_getc();
647 if (ioctrl & IO_SERIAL && sio_ischar())
648 return fn ? 1 : sio_getc();
666 printf("error: loader exit\n");