5e732b8bf0
$ git stripspace < util/runfw/googlesnow.c > /tmp/bla
$ mv /tmp/bla util/runfw/googlesnow.c
Introduced with original commit.
commit b867281a07
Author: Ronald G. Minnich <rminnich@gmail.com>
Date: Wed Jan 16 11:59:34 2013 -0600
Utility to run the snow bios in user mode
Change-Id: I146c07a918ef99e8ae3c0dd72cf28fae22312e43
Signed-off-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-on: http://review.coreboot.org/2183
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
138 lines
4.3 KiB
C
138 lines
4.3 KiB
C
/*
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* googlesnow - run google snow firmware in user mode
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*
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* Copyright (C) 2013 The ChromiumOS Authors. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA, 02110-1301 USA
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*/
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#include <stdio.h>
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#include <err.h>
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#include <sys/mman.h>
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#include <string.h>
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enum addresses {
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regs = 0x10000000,
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sram = 0x2020000,
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sramsize = 0x77fff,
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};
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// 0x20234b0
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main(int argc, char *argv[])
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{
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int fd;
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int devmem;
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void *regbase;
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void *srambase;
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void (*coreboot)(void) = (void *)0x2023400;
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if (argc != 3)
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errx(1, "usage: runbios rom-file start-address");
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fd = open(argv[1], 2);
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if (fd < 0)
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err(1, argv[1]);
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devmem = open("/dev/mem", 2);
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if (devmem < 0)
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err(1, argv[1]);
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srambase = mmap((void *)sram, sramsize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
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if (-1 == (int)sram)
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err(1, "mmap");
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memset((void *)sram, 0xff, sramsize);
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/* now sort of do what bl1 does: read the 'rom' into the sram */
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/* skip the bl1. We don't run it. */
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if (pread(fd, coreboot, 30*1024, 0x2000) < 30*1024)
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err(1, "read 'rom'");
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/* you want to be in gdb at this point. */
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coreboot = (void *) (strtoul(argv[2], 0, 0));
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coreboot();
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}
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#if 0
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/* cc -g googlesnow.c */
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/* typical run
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gdb a.out
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(gdb) list 50
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45 i2c = mmap((void *)0x12c60000, 0x10000, PROT_READ|PROT_WRITE, MAP_ANONYMOUS|MAP_PRIVATE, devmem, (off_t) 0x12c60000);
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46 if (-1 == (int)i2c)
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47 err(1, "mmap i2c");
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48
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49 /* now sort of do what bl1 does: read the 'rom' into the sram */
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50 if (pread(fd, coreboot, 30*1024, 0x2000) < 30*1024)
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51 err(1, "read 'rom'");
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52 /* you want to be in gdb at this point. */
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53 coreboot = (void *) strtoull(argv[2], 0, 0);
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54 coreboot();
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(gdb) br 54
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Breakpoint 3 at 0x8798: file runbios.c, line 54.
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(gdb) run ~/coreboot/build/coreboot.rom 0x020234b0
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The program being debugged has been started already.
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Start it from the beginning? (y or n) y
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Starting program: /root/coreboot/util/runarmbios/a.out ~/coreboot/build/coreboot.rom 0x020234b0
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Breakpoint 3, main (argc=3, argv=0x7efff7c4) at runbios.c:54
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54 coreboot();
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(gdb) symbol-file ~/coreboot/build/cbfs/fallback/bootblock.debug
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Load new symbol table from "/root/coreboot/build/cbfs/fallback/bootblock.debug"? (y or n) y
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Reading symbols from /root/coreboot/build/cbfs/fallback/bootblock.debug...done.
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Error in re-setting breakpoint 3: No source file named runbios.c.
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(gdb) display/i $pc
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1: x/i $pc
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=> 0x8798: ldr r3, [r11, #-8]
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(gdb) stepi
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0x0000879c in ?? ()
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1: x/i $pc
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=> 0x879c: blx r3
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(gdb)
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0x020234b0 in call_bootblock ()
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1: x/i $pc
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=> 0x20234b0 <call_bootblock>: ldr sp, [pc, #3800] ; 0x2024390
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(gdb)
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0x020234b4 in call_bootblock ()
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1: x/i $pc
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=> 0x20234b4 <call_bootblock+4>: bic sp, sp, #7
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(gdb)
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0x020234b8 in call_bootblock ()
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1: x/i $pc
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=> 0x20234b8 <call_bootblock+8>: mov r0, #0
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(gdb)
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0x020234bc in call_bootblock ()
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1: x/i $pc
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=> 0x20234bc <call_bootblock+12>: blx 0x20244b8 <main>
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(gdb)
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main (bist=0) at src/arch/armv7/bootblock_simple.c:37
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37 {
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1: x/i $pc
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=> 0x20244b8 <main>: push {r3, lr}
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(gdb)
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42 bootblock_mainboard_init();
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1: x/i $pc
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=> 0x20244ba <main+2>: bl 0x2023c08 <bootblock_mainboard_init>
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(gdb)
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bootblock_mainboard_init () at src/mainboard/google/snow/bootblock.c:2124
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2124 {
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1: x/i $pc
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=> 0x2023c08 <bootblock_mainboard_init>: stmdb sp!, {r4, r5, r6, r7, r9, r10, r11, lr}
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(gdb)
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2127 i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
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1: x/i $pc
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=> 0x2023c0c <bootblock_mainboard_init+4>: movs r1, #0
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Note you are now debugging source, and pretty much all commands work.
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*/
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#endif
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