Add exit and getchar functions to beri/boot2 code. They are required by panic_action functin introduced in r328437
670 lines
14 KiB
C
670 lines
14 KiB
C
/*-
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* Copyright (c) 2013-2014 Robert N. M. Watson
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* All rights reserved.
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*
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* This software was developed by SRI International and the University of
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* Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237)
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* ("CTSRD"), as part of the DARPA CRASH research programme.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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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/endian.h>
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#include <sys/reboot.h>
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#include <machine/bootinfo.h>
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#include <machine/elf.h>
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#include <stand.h>
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#include <stdarg.h>
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#include <string.h>
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#include <beri.h>
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#include <cfi.h>
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#include <cons.h>
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#include <mips.h>
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#include <sdcard.h>
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#include "paths.h"
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#include "rbx.h"
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static int beri_argc;
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static const char **beri_argv, **beri_envv;
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static uint64_t beri_memsize;
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#define IO_KEYBOARD 1
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#define IO_SERIAL 2
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#define SECOND 1 /* Circa that many ticks in a second. */
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#define ARGS 0x900
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#define NOPT 14
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#define MEM_BASE 0x12
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#define MEM_EXT 0x15
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/*
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* XXXRW: I think this has to do with whether boot2 expects a partition
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* table?
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*/
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#define DRV_HARD 0x80
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#define DRV_MASK 0x7f
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/* Default to using CFI flash. */
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#define TYPE_DEFAULT BOOTINFO_DEV_TYPE_SDCARD
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/* Hard-coded assumption about location of JTAG-loaded kernel. */
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#define DRAM_KERNEL_ADDR ((void *)mips_phys_to_cached(0x20000))
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extern uint32_t _end;
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static const char optstr[NOPT] = "DhaCcdgmnpqrsv"; /* Also 'P', 'S' */
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static const unsigned char flags[NOPT] = {
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RBX_DUAL,
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RBX_SERIAL,
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RBX_ASKNAME,
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RBX_CDROM,
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RBX_CONFIG,
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RBX_KDB,
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RBX_GDB,
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RBX_MUTE,
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RBX_NOINTR,
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RBX_PAUSE,
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RBX_QUIET,
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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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/* These must match BOOTINFO_DEV_TYPE constants. */
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static const char *const dev_nm[] = {"dram", "cfi", "sdcard"};
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static const u_int dev_nm_count = nitems(dev_nm);
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static struct dsk {
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unsigned type; /* BOOTINFO_DEV_TYPE_x object type. */
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uintptr_t unitptr; /* Unit number or pointer to object. */
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uint8_t slice;
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uint8_t part;
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#if 0
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unsigned start;
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int init;
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#endif
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} dsk;
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static char cmd[512], cmddup[512], knamebuf[1024];
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static const char *kname;
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uint32_t opts;
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#if 0
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static int comspeed = SIOSPD;
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#endif
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struct bootinfo bootinfo;
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static uint8_t ioctrl = IO_KEYBOARD;
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void putchar(int);
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static void boot_fromdram(void);
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static void boot_fromfs(void);
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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 xputc(int);
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static int xgetc(int);
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#define UFS_SMALL_CGBASE
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#include "ufsread.c"
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static struct dmadat __dmadat;
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static inline int
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xfsread(ufs_ino_t inode, void *buf, size_t nbyte)
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{
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if ((size_t)fsread(inode, buf, nbyte) != nbyte) {
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printf("Invalid %s\n", "format");
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return -1;
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}
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return 0;
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}
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static inline void
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getstr(void)
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{
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char *s;
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int c;
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s = cmd;
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for (;;) {
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switch (c = xgetc(0)) {
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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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putchar('\n');
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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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putchar(c);
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}
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}
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}
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int
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main(u_int argc, const char *argv[], const char *envv[], uint64_t memsize)
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{
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uint8_t autoboot;
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ufs_ino_t ino;
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size_t nbyte;
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/* Arguments from Miniboot. */
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beri_argc = argc;
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beri_argv = argv;
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beri_envv = envv;
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beri_memsize = memsize;
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dmadat = &__dmadat;
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#if 0
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/* XXXRW: more here. */
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v86.ctl = V86_FLAGS;
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v86.efl = PSL_RESERVED_DEFAULT | PSL_I;
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dsk.drive = *(uint8_t *)PTOV(ARGS);
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#endif
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dsk.type = TYPE_DEFAULT;
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#if 0
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dsk.unit = dsk.drive & DRV_MASK;
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dsk.slice = *(uint8_t *)PTOV(ARGS + 1) + 1;
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#endif
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bootinfo.bi_version = BOOTINFO_VERSION;
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bootinfo.bi_size = sizeof(bootinfo);
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/* Process configuration file */
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autoboot = 1;
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if ((ino = lookup(PATH_CONFIG)) ||
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(ino = lookup(PATH_DOTCONFIG))) {
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nbyte = fsread(ino, cmd, sizeof(cmd) - 1);
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cmd[nbyte] = '\0';
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}
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if (*cmd) {
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memcpy(cmddup, cmd, sizeof(cmd));
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if (parse())
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autoboot = 0;
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if (!OPT_CHECK(RBX_QUIET))
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printf("%s: %s", PATH_CONFIG, cmddup);
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/* Do not process this command twice */
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*cmd = 0;
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}
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/*
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* Try to exec stage 3 boot loader. If interrupted by a keypress,
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* or in case of failure, try to load a kernel directly instead.
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*/
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if (!kname) {
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kname = PATH_LOADER;
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if (autoboot && !keyhit(3*SECOND)) {
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boot_fromfs();
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kname = PATH_KERNEL;
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}
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}
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/* Present the user with the boot2 prompt. */
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for (;;) {
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if (!autoboot || !OPT_CHECK(RBX_QUIET))
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printf("\nFreeBSD/mips boot\n"
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"Default: %s%ju:%s\n"
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"boot: ",
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dev_nm[dsk.type], dsk.unitptr, kname);
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#if 0
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if (ioctrl & IO_SERIAL)
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sio_flush();
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#endif
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if (!autoboot || keyhit(3*SECOND))
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getstr();
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else if (!autoboot || !OPT_CHECK(RBX_QUIET))
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putchar('\n');
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autoboot = 0;
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if (parse())
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putchar('\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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boot(void *entryp, int argc, const char *argv[], const char *envv[])
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{
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bootinfo.bi_kernelname = (bi_ptr_t)kname;
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bootinfo.bi_boot2opts = opts & RBX_MASK;
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bootinfo.bi_boot_dev_type = dsk.type;
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bootinfo.bi_boot_dev_unitptr = dsk.unitptr;
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bootinfo.bi_memsize = beri_memsize;
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#if 0
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/*
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* XXXRW: A possible future way to distinguish Miniboot passing a memory
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* size vs DTB..?
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*/
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if (beri_memsize <= BERI_MEMVSDTB)
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bootinfo.bi_memsize = beri_memsize;
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else
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bootinfo.bi_dtb = beri_memsize;
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#endif
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((void(*)(int, const char **, const char **, void *))entryp)(argc, argv,
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envv, &bootinfo);
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}
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/*
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* Boot a kernel that has mysteriously (i.e., by JTAG) appeared in DRAM;
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* assume that it is already properly relocated, etc, and invoke its entry
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* address without question or concern.
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*/
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static void
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boot_fromdram(void)
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{
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void *kaddr = DRAM_KERNEL_ADDR; /* XXXRW: Something better here. */
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Elf64_Ehdr *ehp = kaddr;
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if (!IS_ELF(*ehp)) {
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printf("Invalid %s\n", "format");
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return;
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}
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boot((void *)ehp->e_entry, beri_argc, beri_argv, beri_envv);
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}
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static void
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boot_fromfs(void)
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{
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union {
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Elf64_Ehdr eh;
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} hdr;
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static Elf64_Phdr ep[2];
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#if 0
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static Elf64_Shdr es[2];
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#endif
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caddr_t p;
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ufs_ino_t ino;
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uint64_t addr;
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int i, j;
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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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if (xfsread(ino, &hdr, sizeof(hdr)))
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return;
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if (IS_ELF(hdr.eh)) {
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fs_off = hdr.eh.e_phoff;
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for (j = i = 0; i < hdr.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;
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fs_off = ep[i].p_offset;
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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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p += roundup2(ep[1].p_memsz, PAGE_SIZE);
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#if 0
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bootinfo.bi_symtab = VTOP(p);
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if (hdr.eh.e_shnum == hdr.eh.e_shstrndx + 3) {
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fs_off = hdr.eh.e_shoff + sizeof(es[0]) *
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(hdr.eh.e_shstrndx + 1);
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if (xfsread(ino, &es, sizeof(es)))
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return;
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for (i = 0; i < 2; i++) {
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*(Elf32_Word *)p = es[i].sh_size;
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p += sizeof(es[i].sh_size);
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fs_off = es[i].sh_offset;
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if (xfsread(ino, p, es[i].sh_size))
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return;
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p += es[i].sh_size;
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}
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}
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#endif
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addr = hdr.eh.e_entry;
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#if 0
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bootinfo.bi_esymtab = VTOP(p);
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#endif
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} else {
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printf("Invalid %s\n", "format");
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return;
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}
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boot((void *)addr, beri_argc, beri_argv, beri_envv);
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}
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static void
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load(void)
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{
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switch (dsk.type) {
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case BOOTINFO_DEV_TYPE_DRAM:
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boot_fromdram();
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break;
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default:
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boot_fromfs();
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break;
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}
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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, *q;
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char unit;
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size_t len;
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const char *cp;
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#if 0
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int c, i, j;
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#else
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int c, i;
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#endif
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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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if (c == 'P') {
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cp = "yes";
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#if 0
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} else {
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opts |= OPT_SET(RBX_DUAL) | OPT_SET(RBX_SERIAL);
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cp = "no";
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}
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#endif
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printf("Keyboard: %s\n", cp);
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continue;
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#if 0
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} else if (c == 'S') {
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j = 0;
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while ((unsigned int)(i = *arg++ - '0') <= 9)
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j = j * 10 + i;
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if (j > 0 && i == -'0') {
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comspeed = j;
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break;
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}
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/* Fall through to error below ('S' not in optstr[]). */
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#endif
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}
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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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ioctrl = OPT_CHECK(RBX_DUAL) ? (IO_SERIAL|IO_KEYBOARD) :
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OPT_CHECK(RBX_SERIAL) ? IO_SERIAL : IO_KEYBOARD;
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#if 0
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if (ioctrl & IO_SERIAL) {
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if (sio_init(115200 / comspeed) != 0)
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ioctrl &= ~IO_SERIAL;
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}
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#endif
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} else {
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/*-
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* Parse a device/kernel name. Format(s):
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*
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* path
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* deviceX:path
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*
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* NB: Utterly incomprehensible but space-efficient ARM/i386
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* parsing removed in favour of larger but easier-to-read C. This
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* is still not great, however -- e.g., relating to unit handling.
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*
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* TODO: it would be nice if a DRAM pointer could be specified
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* here.
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*
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* XXXRW: Pick up pieces here.
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*/
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/*
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* Search for a parens; if none, then it's just a path.
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* Otherwise, it's a devicename.
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*/
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arg--;
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q = strsep(&arg, ":");
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if (arg != NULL) {
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len = strlen(q);
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if (len < 2) {
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printf("Invalid device: name too short\n");
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return (-1);
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}
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/*
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* First, handle one-digit unit.
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*/
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unit = q[len-1];
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if (unit < '0' || unit > '9') {
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printf("Invalid device: invalid unit %c\n",
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unit);
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return (-1);
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}
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unit -= '0';
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q[len-1] = '\0';
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/*
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* Next, find matching device.
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*/
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for (i = 0; i < dev_nm_count; i++) {
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if (strcmp(q, dev_nm[i]) == 0)
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break;
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}
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if (i == dev_nm_count) {
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printf("Invalid device: no driver match\n");
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return (-1);
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}
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dsk.type = i;
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dsk.unitptr = unit; /* Someday: also a DRAM pointer? */
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} else
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arg = q;
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if ((i = ep - arg)) {
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if ((size_t)i >= sizeof(knamebuf))
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return -1;
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memcpy(knamebuf, arg, i + 1);
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kname = knamebuf;
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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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static int
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drvread(void *buf, unsigned lba, unsigned nblk)
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{
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/* XXXRW: eventually, we may want to pass 'drive' and 'unit' here. */
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switch (dsk.type) {
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case BOOTINFO_DEV_TYPE_CFI:
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return (cfi_read(buf, lba, nblk));
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case BOOTINFO_DEV_TYPE_SDCARD:
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return (altera_sdcard_read(buf, lba, nblk));
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default:
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return (-1);
|
|
}
|
|
}
|
|
|
|
static int
|
|
dskread(void *buf, unsigned lba, unsigned nblk)
|
|
{
|
|
#if 0
|
|
/*
|
|
* XXXRW: For now, assume no partition table around the file system; it's
|
|
* just in raw flash.
|
|
*/
|
|
struct dos_partition *dp;
|
|
struct disklabel *d;
|
|
char *sec;
|
|
unsigned i;
|
|
uint8_t sl;
|
|
|
|
if (!dsk_meta) {
|
|
sec = dmadat->secbuf;
|
|
dsk.start = 0;
|
|
if (drvread(sec, DOSBBSECTOR, 1))
|
|
return -1;
|
|
dp = (void *)(sec + DOSPARTOFF);
|
|
sl = dsk.slice;
|
|
if (sl < BASE_SLICE) {
|
|
for (i = 0; i < NDOSPART; i++)
|
|
if (dp[i].dp_typ == DOSPTYP_386BSD &&
|
|
(dp[i].dp_flag & 0x80 || sl < BASE_SLICE)) {
|
|
sl = BASE_SLICE + i;
|
|
if (dp[i].dp_flag & 0x80 ||
|
|
dsk.slice == COMPATIBILITY_SLICE)
|
|
break;
|
|
}
|
|
if (dsk.slice == WHOLE_DISK_SLICE)
|
|
dsk.slice = sl;
|
|
}
|
|
if (sl != WHOLE_DISK_SLICE) {
|
|
if (sl != COMPATIBILITY_SLICE)
|
|
dp += sl - BASE_SLICE;
|
|
if (dp->dp_typ != DOSPTYP_386BSD) {
|
|
printf("Invalid %s\n", "slice");
|
|
return -1;
|
|
}
|
|
dsk.start = le32toh(dp->dp_start);
|
|
}
|
|
if (drvread(sec, dsk.start + LABELSECTOR, 1))
|
|
return -1;
|
|
d = (void *)(sec + LABELOFFSET);
|
|
if (le32toh(d->d_magic) != DISKMAGIC ||
|
|
le32toh(d->d_magic2) != DISKMAGIC) {
|
|
if (dsk.part != RAW_PART) {
|
|
printf("Invalid %s\n", "label");
|
|
return -1;
|
|
}
|
|
} else {
|
|
if (!dsk.init) {
|
|
if (le16toh(d->d_type) == DTYPE_SCSI)
|
|
dsk.type = TYPE_DA;
|
|
dsk.init++;
|
|
}
|
|
if (dsk.part >= le16toh(d->d_npartitions) ||
|
|
!(le32toh(d->d_partitions[dsk.part].p_size))) {
|
|
printf("Invalid %s\n", "partition");
|
|
return -1;
|
|
}
|
|
dsk.start += le32toh(d->d_partitions[dsk.part].p_offset);
|
|
dsk.start -= le32toh(d->d_partitions[RAW_PART].p_offset);
|
|
}
|
|
}
|
|
return drvread(buf, dsk.start + lba, nblk);
|
|
#else
|
|
return drvread(buf, lba, nblk);
|
|
#endif
|
|
}
|
|
|
|
void
|
|
putchar(int c)
|
|
{
|
|
if (c == '\n')
|
|
xputc('\r');
|
|
xputc(c);
|
|
}
|
|
|
|
static int
|
|
xputc(int c)
|
|
{
|
|
if (ioctrl & IO_KEYBOARD)
|
|
beri_putc(c);
|
|
#if 0
|
|
if (ioctrl & IO_SERIAL)
|
|
sio_putc(c);
|
|
#endif
|
|
return c;
|
|
}
|
|
|
|
static int
|
|
xgetc(int fn)
|
|
{
|
|
if (OPT_CHECK(RBX_NOINTR))
|
|
return 0;
|
|
for (;;) {
|
|
if (ioctrl & IO_KEYBOARD && keyhit(0))
|
|
return fn ? 1 : beri_getc();
|
|
#if 0
|
|
if (ioctrl & IO_SERIAL && sio_ischar())
|
|
return fn ? 1 : sio_getc();
|
|
#endif
|
|
if (fn)
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
int
|
|
getchar(void)
|
|
{
|
|
|
|
return xgetc(0);
|
|
}
|
|
|
|
void
|
|
exit(int code)
|
|
{
|
|
|
|
printf("error: loader exit\n");
|
|
while (1);
|
|
__unreachable();
|
|
}
|