common/cmd_onenand.c

   1 /*
   2  *  U-Boot command for OneNAND support
   3  *
   4  *  Copyright (C) 2005-2007 Samsung Electronics
   5  *  Kyungmin Park <kyungmin.park@samsung.com>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2 as
   9  * published by the Free Software Foundation.
  10  */
  11
  12 #include <common.h>
  13 #include <command.h>
  14
  15 #include <linux/mtd/compat.h>
  16 #include <linux/mtd/mtd.h>
  17 #include <linux/mtd/onenand.h>
  18
  19 #include <asm/io.h>
  20
  21 extern struct mtd_info onenand_mtd;
  22 extern struct onenand_chip onenand_chip;
  23
  24 int do_onenand(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
  25 {
  26         int ret = 0;
  27
  28         switch (argc) {
  29         case 0:
  30         case 1:
  31                 printf("Usage:\n%s\n", cmdtp->usage);
  32                 return 1;
  33
  34         case 2:
  35                 if (strncmp(argv[1], "open", 4) == 0) {
  36                         onenand_init();
  37                         return 0;
  38                 }
  39                 printf("%s\n", onenand_mtd.name);
  40                 return 0;
  41
  42         default:
  43                 /* At least 4 args */
  44                 if (strncmp(argv[1], "erase", 5) == 0) {
  45                         struct erase_info instr = {
  46                                 .callback       = NULL,
  47                         };
  48                         ulong start, end;
  49                         ulong block;
  50                         char *endtail;
  51
  52                         if (strncmp(argv[2], "block", 5) == 0) {
  53                                 start = simple_strtoul(argv[3], NULL, 10);
  54                                 endtail = strchr(argv[3], '-');
  55                                 end = simple_strtoul(endtail + 1, NULL, 10);
  56                         } else {
  57                                 start = simple_strtoul(argv[2], NULL, 10);
  58                                 end = simple_strtoul(argv[3], NULL, 10);
  59
  60                                 start >>= onenand_chip.erase_shift;
  61                                 end >>= onenand_chip.erase_shift;
  62                                 /* Don't include the end block */
  63                                 end--;
  64                         }
  65
  66                         if (!end || end < 0)
  67                                 end = start;
  68
  69                         printf("Erase block from %lu to %lu\n", start, end);
  70
  71                         for (block = start; block <= end; block++) {
  72                                 instr.addr = block << onenand_chip.erase_shift;
  73                                 instr.len = 1 << onenand_chip.erase_shift;
  74                                 ret = onenand_erase(&onenand_mtd, &instr);
  75                                 if (ret) {
  76                                         printf("erase failed %lu\n", block);
  77                                         break;
  78                                 }
  79                         }
  80
  81                         return 0;
  82                 }
  83
  84                 if (strncmp(argv[1], "read", 4) == 0) {
  85                         ulong addr = simple_strtoul(argv[2], NULL, 16);
  86                         ulong ofs = simple_strtoul(argv[3], NULL, 16);
  87                         size_t len = simple_strtoul(argv[4], NULL, 16);
  88                         size_t retlen = 0;
  89                         int oob = strncmp(argv[1], "read.oob", 8) ? 0 : 1;
  90
  91                         if (oob)
  92                                 onenand_read_oob(&onenand_mtd, ofs, len,
  93                                                  &retlen, (u_char *) addr);
  94                         else
  95                                 onenand_read(&onenand_mtd, ofs, len, &retlen,
  96                                              (u_char *) addr);
  97                         printf("Done\n");
  98
  99                         return 0;
 100                 }
 101
 102                 if (strncmp(argv[1], "write", 5) == 0) {
 103                         ulong addr = simple_strtoul(argv[2], NULL, 16);
 104                         ulong ofs = simple_strtoul(argv[3], NULL, 16);
 105                         size_t len = simple_strtoul(argv[4], NULL, 16);
 106                         size_t retlen = 0;
 107
 108                         onenand_write(&onenand_mtd, ofs, len, &retlen,
 109                                       (u_char *) addr);
 110                         printf("Done\n");
 111
 112                         return 0;
 113                 }
 114
 115                 if (strncmp(argv[1], "block", 5) == 0) {
 116                         ulong addr = simple_strtoul(argv[2], NULL, 16);
 117                         ulong block = simple_strtoul(argv[3], NULL, 10);
 118                         ulong page = simple_strtoul(argv[4], NULL, 10);
 119                         size_t len = simple_strtol(argv[5], NULL, 10);
 120                         size_t retlen = 0;
 121                         ulong ofs;
 122                         int oob = strncmp(argv[1], "block.oob", 9) ? 0 : 1;
 123
 124                         ofs = block << onenand_chip.erase_shift;
 125                         if (page)
 126                                 ofs += page << onenand_chip.page_shift;
 127
 128                         if (!len) {
 129                                 if (oob)
 130                                         len = 64;
 131                                 else
 132                                         len = 512;
 133                         }
 134
 135                         if (oob)
 136                                 onenand_read_oob(&onenand_mtd, ofs, len,
 137                                                  &retlen, (u_char *) addr);
 138                         else
 139                                 onenand_read(&onenand_mtd, ofs, len, &retlen,
 140                                              (u_char *) addr);
 141                         return 0;
 142                 }
 143
 144                 break;
 145         }
 146
 147         return 0;
 148 }
 149
 150 U_BOOT_CMD(
 151         onenand,        6,      1,      do_onenand,
 152         "onenand - OneNAND sub-system\n",
 153         "info   - show available OneNAND devices\n"
 154         "onenand read[.oob] addr ofs len - read data at ofs with len to addr\n"
 155         "onenand write addr ofs len - write data at ofs with len from addr\n"
 156         "onenand erase saddr eaddr - erase block start addr to end addr\n"
 157         "onenand block[.oob] addr block [page] [len] - "
 158                 "read data with (block [, page]) to addr"
 159 );