File: [local] / sys / lib / libsa / loadfile.c (download)
Revision 1.1.1.1 (vendor branch), Tue Mar 4 16:15:15 2008 UTC (16 years, 4 months ago) by nbrk
Branch: OPENBSD_4_2_BASE, MAIN
CVS Tags: jornada-partial-support-wip, HEAD Changes since 1.1: +0 -0 lines
Import of OpenBSD 4.2 release kernel tree with initial code to support
Jornada 720/728, StrongARM 1110-based handheld PC.
At this point kernel roots on NFS and boots into vfs_mountroot() and traps.
What is supported:
- glass console, Jornada framebuffer (jfb) works in 16bpp direct color mode
(needs some palette tweaks for non black/white/blue colors, i think)
- saic, SA11x0 interrupt controller (needs cleanup)
- sacom, SA11x0 UART (supported only as boot console for now)
- SA11x0 GPIO controller fully supported (but can't handle multiple interrupt
handlers on one gpio pin)
- sassp, SSP port on SA11x0 that attaches spibus
- Jornada microcontroller (jmcu) to control kbd, battery, etc throught
the SPI bus (wskbd attaches on jmcu, but not tested)
- tod functions seem work
- initial code for SA-1111 (chip companion) : this is TODO
Next important steps, i think:
- gpio and intc on sa1111
- pcmcia support for sa11x0 (and sa1111 help logic)
- REAL root on nfs when we have PCMCIA support (we may use any of supported pccard NICs)
- root on wd0! (using already supported PCMCIA-ATA)
|
/* $NetBSD: loadfile.c,v 1.10 2000/12/03 02:53:04 tsutsui Exp $ */
/* $OpenBSD: loadfile.c,v 1.14 2007/06/26 10:32:50 tom Exp $ */
/*-
* Copyright (c) 1997 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
* NASA Ames Research Center and by Christos Zoulas.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Ralph Campbell.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)boot.c 8.1 (Berkeley) 6/10/93
*/
#ifdef _STANDALONE
#include <lib/libkern/libkern.h>
#include <lib/libsa/stand.h>
#else
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <err.h>
#endif
#include <sys/param.h>
#include <sys/exec.h>
#include "loadfile.h"
#ifdef BOOT_ECOFF
#include <sys/exec_ecoff.h>
static int coff_exec(int, struct ecoff_exechdr *, u_long *, int);
#endif
#ifdef BOOT_AOUT
#include <sys/exec_aout.h>
static int aout_exec(int, struct exec *, u_long *, int);
#endif
#ifdef BOOT_ELF
#include <sys/exec_elf.h>
#if defined(BOOT_ELF32) && defined(BOOT_ELF64)
/*
* Both defined, so elf32_exec() and elf64_exec() need to be separately
* created (can't do it by including loadfile_elf.c here).
*/
int elf32_exec(int, Elf32_Ehdr *, u_long *, int);
int elf64_exec(int, Elf64_Ehdr *, u_long *, int);
#else
#include "loadfile_elf.c"
#endif
#endif
/*
* Open 'filename', read in program and return -1 on error otherwise fd,
* with file still open.
* Also fills in marks.
*/
int
loadfile(const char *fname, u_long *marks, int flags)
{
union {
#ifdef BOOT_ECOFF
struct ecoff_exechdr coff;
#endif
#if defined(BOOT_ELF32) || (defined(BOOT_ELF) && ELFSIZE == 32)
Elf32_Ehdr elf32;
#endif
#if defined(BOOT_ELF64) || (defined(BOOT_ELF) && ELFSIZE == 64)
Elf64_Ehdr elf64;
#endif
#ifdef BOOT_AOUT
struct exec aout;
#endif
} hdr;
ssize_t nr;
int fd, rval;
/* Open the file. */
if ((fd = open(fname, 0)) < 0) {
WARN(("open %s", fname ? fname : "<default>"));
return -1;
}
/* Read the exec header. */
if ((nr = read(fd, &hdr, sizeof(hdr))) != sizeof(hdr)) {
WARN(("read header"));
goto err;
}
#ifdef BOOT_ECOFF
if (!ECOFF_BADMAG(&hdr.coff)) {
rval = coff_exec(fd, &hdr.coff, marks, flags);
} else
#endif
#if defined(BOOT_ELF32) || (defined(BOOT_ELF) && ELFSIZE == 32)
if (memcmp(hdr.elf32.e_ident, ELFMAG, SELFMAG) == 0 &&
hdr.elf32.e_ident[EI_CLASS] == ELFCLASS32) {
rval = elf32_exec(fd, &hdr.elf32, marks, flags);
} else
#endif
#if defined(BOOT_ELF64) || (defined(BOOT_ELF) && ELFSIZE == 64)
if (memcmp(hdr.elf64.e_ident, ELFMAG, SELFMAG) == 0 &&
hdr.elf64.e_ident[EI_CLASS] == ELFCLASS64) {
rval = elf64_exec(fd, &hdr.elf64, marks, flags);
} else
#endif
#ifdef BOOT_AOUT
if (OKMAGIC(N_GETMAGIC(hdr.aout))
#ifndef NO_MID_CHECK
&& N_GETMID(hdr.aout) == MID_MACHINE
#endif
) {
rval = aout_exec(fd, &hdr.aout, marks, flags);
} else
#endif
{
rval = 1;
errno = EFTYPE;
WARN(("%s", fname ? fname : "<default>"));
}
if (rval == 0) {
PROGRESS(("=0x%lx\n", marks[MARK_END] - marks[MARK_START]));
return fd;
}
err:
(void)close(fd);
return -1;
}
#ifdef BOOT_ECOFF
static int
coff_exec(int fd, struct ecoff_exechdr *coff, u_long *marks, int flags)
{
paddr_t offset = marks[MARK_START];
paddr_t minp = ~0, maxp = 0, pos;
/* Read in text. */
if (lseek(fd, ECOFF_TXTOFF(coff), SEEK_SET) == -1) {
WARN(("lseek text"));
return 1;
}
if (coff->a.tsize != 0) {
if (flags & LOAD_TEXT) {
PROGRESS(("%lu", coff->a.tsize));
if (READ(fd, coff->a.text_start, coff->a.tsize) !=
coff->a.tsize) {
return 1;
}
}
else {
if (lseek(fd, coff->a.tsize, SEEK_CUR) == -1) {
WARN(("read text"));
return 1;
}
}
if (flags & (COUNT_TEXT|LOAD_TEXT)) {
pos = coff->a.text_start;
if (minp > pos)
minp = pos;
pos += coff->a.tsize;
if (maxp < pos)
maxp = pos;
}
}
/* Read in data. */
if (coff->a.dsize != 0) {
if (flags & LOAD_DATA) {
PROGRESS(("+%lu", coff->a.dsize));
if (READ(fd, coff->a.data_start, coff->a.dsize) !=
coff->a.dsize) {
WARN(("read data"));
return 1;
}
}
if (flags & (COUNT_DATA|LOAD_DATA)) {
pos = coff->a.data_start;
if (minp > pos)
minp = pos;
pos += coff->a.dsize;
if (maxp < pos)
maxp = pos;
}
}
/* Zero out bss. */
if (coff->a.bsize != 0) {
if (flags & LOAD_BSS) {
PROGRESS(("+%lu", coff->a.bsize));
BZERO(coff->a.bss_start, coff->a.bsize);
}
if (flags & (COUNT_BSS|LOAD_BSS)) {
pos = coff->a.bss_start;
if (minp > pos)
minp = pos;
pos = coff->a.bsize;
if (maxp < pos)
maxp = pos;
}
}
marks[MARK_START] = LOADADDR(minp);
marks[MARK_ENTRY] = LOADADDR(coff->a.entry);
marks[MARK_NSYM] = 1; /* XXX: Kernel needs >= 0 */
marks[MARK_SYM] = LOADADDR(maxp);
marks[MARK_END] = LOADADDR(maxp);
return 0;
}
#endif /* BOOT_ECOFF */
#ifdef BOOT_AOUT
static int
aout_exec(int fd, struct exec *x, u_long *marks, int flags)
{
u_long entry = x->a_entry;
paddr_t aoutp = 0;
paddr_t minp, maxp;
int cc;
paddr_t offset = marks[MARK_START];
u_long magic = N_GETMAGIC(*x);
int sub;
/* In OMAGIC and NMAGIC, exec header isn't part of text segment */
if (magic == OMAGIC || magic == NMAGIC)
sub = 0;
else
sub = sizeof(*x);
minp = maxp = ALIGNENTRY(entry);
if (lseek(fd, sizeof(*x), SEEK_SET) == -1) {
WARN(("lseek text"));
return 1;
}
/*
* Leave a copy of the exec header before the text.
* The kernel may use this to verify that the
* symbols were loaded by this boot program.
*/
if (magic == OMAGIC || magic == NMAGIC) {
if (flags & LOAD_HDR && maxp >= sizeof(*x))
BCOPY(x, maxp - sizeof(*x), sizeof(*x));
}
else {
if (flags & LOAD_HDR)
BCOPY(x, maxp, sizeof(*x));
if (flags & (LOAD_HDR|COUNT_HDR))
maxp += sizeof(*x);
}
/*
* Read in the text segment.
*/
if (flags & LOAD_TEXT) {
PROGRESS(("%ld", x->a_text));
if (READ(fd, maxp, x->a_text - sub) != x->a_text - sub) {
WARN(("read text"));
return 1;
}
} else {
if (lseek(fd, x->a_text - sub, SEEK_CUR) == -1) {
WARN(("seek text"));
return 1;
}
}
if (flags & (LOAD_TEXT|COUNT_TEXT))
maxp += x->a_text - sub;
/*
* Provide alignment if required
*/
if (magic == ZMAGIC || magic == NMAGIC) {
int size = -(unsigned int)maxp & (__LDPGSZ - 1);
if (flags & LOAD_TEXTA) {
PROGRESS(("/%d", size));
BZERO(maxp, size);
}
if (flags & (LOAD_TEXTA|COUNT_TEXTA))
maxp += size;
}
/*
* Read in the data segment.
*/
if (flags & LOAD_DATA) {
PROGRESS(("+%ld", x->a_data));
if (READ(fd, maxp, x->a_data) != x->a_data) {
WARN(("read data"));
return 1;
}
}
else {
if (lseek(fd, x->a_data, SEEK_CUR) == -1) {
WARN(("seek data"));
return 1;
}
}
if (flags & (LOAD_DATA|COUNT_DATA))
maxp += x->a_data;
/*
* Zero out the BSS section.
* (Kernel doesn't care, but do it anyway.)
*/
if (flags & LOAD_BSS) {
PROGRESS(("+%ld", x->a_bss));
BZERO(maxp, x->a_bss);
}
if (flags & (LOAD_BSS|COUNT_BSS))
maxp += x->a_bss;
/*
* Read in the symbol table and strings.
* (Always set the symtab size word.)
*/
if (flags & LOAD_SYM)
BCOPY(&x->a_syms, maxp, sizeof(x->a_syms));
if (flags & (LOAD_SYM|COUNT_SYM)) {
maxp += sizeof(x->a_syms);
aoutp = maxp;
}
if (x->a_syms > 0) {
/* Symbol table and string table length word. */
if (flags & LOAD_SYM) {
PROGRESS(("+[%ld", x->a_syms));
if (READ(fd, maxp, x->a_syms) != x->a_syms) {
WARN(("read symbols"));
return 1;
}
} else {
if (lseek(fd, x->a_syms, SEEK_CUR) == -1) {
WARN(("seek symbols"));
return 1;
}
}
if (flags & (LOAD_SYM|COUNT_SYM))
maxp += x->a_syms;
if (read(fd, &cc, sizeof(cc)) != sizeof(cc)) {
WARN(("read string table"));
return 1;
}
if (flags & LOAD_SYM) {
BCOPY(&cc, maxp, sizeof(cc));
/* String table. Length word includes itself. */
PROGRESS(("+%d]", cc));
}
if (flags & (LOAD_SYM|COUNT_SYM))
maxp += sizeof(cc);
cc -= sizeof(int);
if (cc <= 0) {
WARN(("symbol table too short"));
return 1;
}
if (flags & LOAD_SYM) {
if (READ(fd, maxp, cc) != cc) {
WARN(("read strings"));
return 1;
}
} else {
if (lseek(fd, cc, SEEK_CUR) == -1) {
WARN(("seek strings"));
return 1;
}
}
if (flags & (LOAD_SYM|COUNT_SYM))
maxp += cc;
}
marks[MARK_START] = LOADADDR(minp);
marks[MARK_ENTRY] = LOADADDR(entry);
marks[MARK_NSYM] = x->a_syms;
marks[MARK_SYM] = LOADADDR(aoutp);
marks[MARK_END] = LOADADDR(maxp);
return 0;
}
#endif /* BOOT_AOUT */