1/* 2 * Copyright (c) 2011 The Chromium OS Authors. All rights reserved. 3 * Use of this source code is governed by a BSD-style license that can be 4 * found in the LICENSE file. 5 * 6 * Alternatively, this software may be distributed under the terms of the 7 * GNU General Public License ("GPL") version 2 as published by the Free 8 * Software Foundation. 9 */ 10 11#include <common.h> 12#include <command.h> 13#include <mapmem.h> 14#include <part.h> 15 16static int 17do_rw(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) 18{ 19 struct blk_desc *dev_desc = NULL; 20 struct disk_partition part_info; 21 ulong offset, limit; 22 uint blk, cnt, res; 23 void *addr; 24 int part; 25 26 if (argc != 6) { 27 cmd_usage(cmdtp); 28 return 1; 29 } 30 31 part = part_get_info_by_dev_and_name_or_num(argv[1], argv[2], 32 &dev_desc, &part_info, 1); 33 if (part < 0) 34 return 1; 35 36 addr = map_sysmem(hextoul(argv[3], NULL), 0); 37 blk = hextoul(argv[4], NULL); 38 cnt = hextoul(argv[5], NULL); 39 40 if (part > 0) { 41 offset = part_info.start; 42 limit = part_info.size; 43 } else { 44 /* Largest address not available in struct blk_desc. */ 45 offset = 0; 46 limit = ~0; 47 } 48 49 if (cnt + blk > limit) { 50 printf("%s out of range\n", cmdtp->name); 51 return 1; 52 } 53 54 if (IS_ENABLED(CONFIG_CMD_WRITE) && !strcmp(cmdtp->name, "write")) 55 res = blk_dwrite(dev_desc, offset + blk, cnt, addr); 56 else 57 res = blk_dread(dev_desc, offset + blk, cnt, addr); 58 59 if (res != cnt) { 60 printf("%s error\n", cmdtp->name); 61 return 1; 62 } 63 64 return 0; 65} 66 67#ifdef CONFIG_CMD_READ 68U_BOOT_CMD( 69 read, 6, 0, do_rw, 70 "Load binary data from a partition", 71 "<interface> <dev[:part|#partname]> addr blk# cnt" 72); 73#endif 74 75#ifdef CONFIG_CMD_WRITE 76U_BOOT_CMD( 77 write, 6, 0, do_rw, 78 "Store binary data to a partition", 79 "<interface> <dev[:part|#partname]> addr blk# cnt" 80); 81#endif 82