blk_common.c
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/*
* Handling of common block commands
*
* Copyright (c) 2017 Google, Inc
*
* (C) Copyright 2000-2011
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <blk.h>
#ifdef CONFIG_HAVE_BLOCK_DEVICE
int blk_common_cmd(int argc, char * const argv[], enum if_type if_type,
int *cur_devnump)
{
const char *if_name = blk_get_if_type_name(if_type);
switch (argc) {
case 0:
case 1:
return CMD_RET_USAGE;
case 2:
if (strncmp(argv[1], "inf", 3) == 0) {
blk_list_devices(if_type);
return 0;
} else if (strncmp(argv[1], "dev", 3) == 0) {
if (blk_print_device_num(if_type, *cur_devnump)) {
printf("\nno %s devices available\n", if_name);
return CMD_RET_FAILURE;
}
return 0;
} else if (strncmp(argv[1], "part", 4) == 0) {
if (blk_list_part(if_type))
printf("\nno %s devices available\n", if_name);
return 0;
}
return CMD_RET_USAGE;
case 3:
if (strncmp(argv[1], "dev", 3) == 0) {
int dev = (int)simple_strtoul(argv[2], NULL, 10);
if (!blk_show_device(if_type, dev)) {
*cur_devnump = dev;
printf("... is now current device\n");
} else {
return CMD_RET_FAILURE;
}
return 0;
} else if (strncmp(argv[1], "part", 4) == 0) {
int dev = (int)simple_strtoul(argv[2], NULL, 10);
if (blk_print_part_devnum(if_type, dev)) {
printf("\n%s device %d not available\n",
if_name, dev);
return CMD_RET_FAILURE;
}
return 0;
}
return CMD_RET_USAGE;
default: /* at least 4 args */
if (strcmp(argv[1], "read") == 0) {
ulong addr = simple_strtoul(argv[2], NULL, 16);
lbaint_t blk = simple_strtoul(argv[3], NULL, 16);
ulong cnt = simple_strtoul(argv[4], NULL, 16);
ulong n;
printf("\n%s read: device %d block # "LBAFU", count %lu ... ",
if_name, *cur_devnump, blk, cnt);
n = blk_read_devnum(if_type, *cur_devnump, blk, cnt,
(ulong *)addr);
printf("%ld blocks read: %s\n", n,
n == cnt ? "OK" : "ERROR");
return n == cnt ? 0 : 1;
} else if (strcmp(argv[1], "write") == 0) {
ulong addr = simple_strtoul(argv[2], NULL, 16);
lbaint_t blk = simple_strtoul(argv[3], NULL, 16);
ulong cnt = simple_strtoul(argv[4], NULL, 16);
ulong n;
printf("\n%s write: device %d block # "LBAFU", count %lu ... ",
if_name, *cur_devnump, blk, cnt);
n = blk_write_devnum(if_type, *cur_devnump, blk, cnt,
(ulong *)addr);
printf("%ld blocks written: %s\n", n,
n == cnt ? "OK" : "ERROR");
return n == cnt ? 0 : 1;
} else {
return CMD_RET_USAGE;
}
}
}
#endif