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https://github.com/brain-hackers/u-boot-brain
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![Stephen Warren](/assets/img/avatar_default.png)
Rework get_device_and_partition() to: a) Implement a new partition ID of "auto", which requests that U-Boot search for the first "bootable" partition, and fall back to the first valid partition if none is found. This way, users don't need to specify an explicit partition in their commands. b) Make use of get_device(). c) Add parameter to indicate whether returning a whole device is acceptable, or whether a partition is mandatory. d) Make error-checking of the user's device-/partition-specification more complete. In particular, if strtoul() doesn't convert all characters, it's an error rather than just ignored. The resultant device/partition returned by the function will be as follows, based on whether the disk has a partition table (ptable) or not, and whether the calling command allows the whole device to be returned or not. (D and P are integers, P >= 1) D D: No ptable: !allow_whole_dev: error allow_whole_dev: device D ptable: device D partition 1 D:0 !allow_whole_dev: error allow_whole_dev: device D D:P No ptable: error ptable: device D partition P D:auto No ptable: !allow_whole_dev: error allow_whole_dev: device D ptable: first partition in device D with bootable flag set. If none, first valid paratition in device D. Note: In order to review this patch, it's probably easiest to simply look at the file contents post-application, rather than reading the patch itself. Signed-off-by: Rob Herring <rob.herring@calxeda.com> [swarren: Rob implemented scanning for bootable partitions. I fixed a couple of issues there, switched the syntax to ":auto", added the error-checking rework, and ":0" syntax for the whole device] Signed-off-by: Stephen Warren <swarren@nvidia.com>
191 lines
4.5 KiB
C
191 lines
4.5 KiB
C
/*
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* (C) Copyright 2003 - 2004
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* Sysgo Real-Time Solutions, AG <www.elinos.com>
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* Pavel Bartusek <pba@sysgo.com>
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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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., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*
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*/
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/*
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* Reiserfs support
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*/
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#include <common.h>
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#include <config.h>
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#include <command.h>
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#include <image.h>
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#include <linux/ctype.h>
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#include <asm/byteorder.h>
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#include <reiserfs.h>
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#include <part.h>
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#ifndef CONFIG_DOS_PARTITION
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#error DOS partition support must be selected
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#endif
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/* #define REISER_DEBUG */
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#ifdef REISER_DEBUG
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#define PRINTF(fmt,args...) printf (fmt ,##args)
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#else
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#define PRINTF(fmt,args...)
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#endif
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int do_reiserls (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
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{
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char *filename = "/";
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int dev, part;
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block_dev_desc_t *dev_desc=NULL;
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disk_partition_t info;
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if (argc < 3)
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return CMD_RET_USAGE;
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part = get_device_and_partition(argv[1], argv[2], &dev_desc, &info, 1);
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if (part < 0)
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return 1;
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if (argc == 4) {
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filename = argv[3];
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}
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dev = dev_desc->dev;
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PRINTF("Using device %s %d:%d, directory: %s\n", argv[1], dev, part, filename);
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reiserfs_set_blk_dev(dev_desc, &info);
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if (!reiserfs_mount(info.size)) {
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printf ("** Bad Reiserfs partition or disk - %s %d:%d **\n", argv[1], dev, part);
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return 1;
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}
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if (reiserfs_ls (filename)) {
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printf ("** Error reiserfs_ls() **\n");
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return 1;
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};
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return 0;
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}
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U_BOOT_CMD(
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reiserls, 4, 1, do_reiserls,
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"list files in a directory (default /)",
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"<interface> <dev[:part]> [directory]\n"
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" - list files from 'dev' on 'interface' in a 'directory'"
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);
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/******************************************************************************
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* Reiserfs boot command intepreter. Derived from diskboot
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*/
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int do_reiserload (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
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{
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char *filename = NULL;
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int dev, part;
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ulong addr = 0, filelen;
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disk_partition_t info;
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block_dev_desc_t *dev_desc = NULL;
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char buf [12];
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unsigned long count;
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char *addr_str;
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switch (argc) {
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case 3:
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addr_str = getenv("loadaddr");
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if (addr_str != NULL) {
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addr = simple_strtoul (addr_str, NULL, 16);
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} else {
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addr = CONFIG_SYS_LOAD_ADDR;
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}
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filename = getenv ("bootfile");
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count = 0;
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break;
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case 4:
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addr = simple_strtoul (argv[3], NULL, 16);
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filename = getenv ("bootfile");
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count = 0;
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break;
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case 5:
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addr = simple_strtoul (argv[3], NULL, 16);
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filename = argv[4];
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count = 0;
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break;
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case 6:
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addr = simple_strtoul (argv[3], NULL, 16);
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filename = argv[4];
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count = simple_strtoul (argv[5], NULL, 16);
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break;
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default:
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return CMD_RET_USAGE;
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}
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if (!filename) {
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puts ("\n** No boot file defined **\n");
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return 1;
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}
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part = get_device_and_partition(argv[1], argv[2], &dev_desc, &info, 1);
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if (part < 0)
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return 1;
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dev = dev_desc->dev;
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printf("Loading file \"%s\" from %s device %d%c%c\n",
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filename, argv[1], dev,
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part ? ':' : ' ', part ? part + '0' : ' ');
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reiserfs_set_blk_dev(dev_desc, &info);
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if (!reiserfs_mount(info.size)) {
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printf ("** Bad Reiserfs partition or disk - %s %d:%d **\n", argv[1], dev, part);
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return 1;
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}
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filelen = reiserfs_open(filename);
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if (filelen < 0) {
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printf("** File not found %s\n", filename);
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return 1;
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}
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if ((count < filelen) && (count != 0)) {
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filelen = count;
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}
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if (reiserfs_read((char *)addr, filelen) != filelen) {
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printf("\n** Unable to read \"%s\" from %s %d:%d **\n", filename, argv[1], dev, part);
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return 1;
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}
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/* Loading ok, update default load address */
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load_addr = addr;
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printf ("\n%ld bytes read\n", filelen);
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sprintf(buf, "%lX", filelen);
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setenv("filesize", buf);
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return filelen;
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}
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U_BOOT_CMD(
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reiserload, 6, 0, do_reiserload,
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"load binary file from a Reiser filesystem",
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"<interface> <dev[:part]> [addr] [filename] [bytes]\n"
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" - load binary file 'filename' from 'dev' on 'interface'\n"
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" to address 'addr' from dos filesystem"
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);
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