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 #ifdef CONFIG_CMD_ONENAND
  16
  17 #include <linux/mtd/compat.h>
  18 #include <linux/mtd/mtd.h>
  19 #include <linux/mtd/onenand.h>
  20
  21 #include <asm/io.h>
  22
  23 extern struct mtd_info onenand_mtd;
  24 extern struct onenand_chip onenand_chip;
  25
  26 int do_onenand(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
  27 {
  28         int ret = 0;
  29
  30         switch (argc) {
  31         case 0:
  32         case 1:
  33                 printf("Usage:\n%s\n", cmdtp->usage);
  34                 return 1;
  35
  36         case 2:
  37                 if (strncmp(argv[1], "open", 4) == 0) {
  38                         onenand_init();
  39                         return 0;
  40                 }
  41                 onenand_print_device_info(onenand_chip.device_id, 1);
  42                 return 0;
  43
  44         default:
  45                 /* At least 4 args */
  46                 if (strncmp(argv[1], "erase", 5) == 0) {
  47                         struct erase_info instr = {
  48                                 .callback       = NULL,
  49                         };
  50                         ulong start, end;
  51                         ulong block;
  52                         char *endtail;
  53
  54                         if (strncmp(argv[2], "block", 5) == 0) {
  55                                 start = simple_strtoul(argv[3], NULL, 10);
  56                                 endtail = strchr(argv[3], '-');
  57                                 end = simple_strtoul(endtail + 1, NULL, 10);
  58                         } else {
  59                                 start = simple_strtoul(argv[2], NULL, 10);
  60                                 end = simple_strtoul(argv[3], NULL, 10);
  61                                 start -= (unsigned long)onenand_chip.base;
  62                                 end -= (unsigned long)onenand_chip.base;
  63
  64                                 start >>= onenand_chip.erase_shift;
  65                                 end >>= onenand_chip.erase_shift;
  66                                 /* Don't include the end block */
  67                                 end--;
  68                         }
  69
  70                         if (!end || end < 0)
  71                                 end = start;
  72
  73                         printf("Erase block from %d to %d\n", start, end);
  74
  75                         for (block = start; block <= end; block++) {
  76                                 instr.addr = block << onenand_chip.erase_shift;
  77                                 instr.len = 1 << onenand_chip.erase_shift;
  78                                 ret = onenand_erase(&onenand_mtd, &instr);
  79                                 if (ret) {
  80                                         printf("erase failed %d\n", block);
  81                                         break;
  82                                 }
  83                         }
  84
  85                         return 0;
  86                 }
  87
  88                 if (strncmp(argv[1], "read", 4) == 0) {
  89                         ulong addr = simple_strtoul(argv[2], NULL, 16);
  90                         ulong ofs = simple_strtoul(argv[3], NULL, 16);
  91                         size_t len = simple_strtoul(argv[4], NULL, 16);
  92                         size_t retlen = 0;
  93                         int oob = strncmp(argv[1], "read.oob", 8) ? 0 : 1;
  94
  95                         ofs -= (unsigned long)onenand_chip.base;
  96
  97                         if (oob)
  98                                 onenand_read_oob(&onenand_mtd, ofs, len,
  99                                                  &retlen, (u_char *) addr);
 100                         else
 101                                 onenand_read(&onenand_mtd, ofs, len, &retlen,
 102                                              (u_char *) addr);
 103                         printf("Done\n");
 104
 105                         return 0;
 106                 }
 107
 108                 if (strncmp(argv[1], "write", 5) == 0) {
 109                         ulong addr = simple_strtoul(argv[2], NULL, 16);
 110                         ulong ofs = simple_strtoul(argv[3], NULL, 16);
 111                         size_t len = simple_strtoul(argv[4], NULL, 16);
 112                         size_t retlen = 0;
 113
 114                         ofs -= (unsigned long)onenand_chip.base;
 115
 116                         onenand_write(&onenand_mtd, ofs, len, &retlen,
 117                                       (u_char *) addr);
 118                         printf("Done\n");
 119
 120                         return 0;
 121                 }
 122
 123                 if (strncmp(argv[1], "block", 5) == 0) {
 124                         ulong addr = simple_strtoul(argv[2], NULL, 16);
 125                         ulong block = simple_strtoul(argv[3], NULL, 10);
 126                         ulong page = simple_strtoul(argv[4], NULL, 10);
 127                         size_t len = simple_strtol(argv[5], NULL, 10);
 128                         size_t retlen = 0;
 129                         ulong ofs;
 130                         int oob = strncmp(argv[1], "block.oob", 9) ? 0 : 1;
 131
 132                         ofs = block << onenand_chip.erase_shift;
 133                         if (page)
 134                                 ofs += page << onenand_chip.page_shift;
 135
 136                         if (!len) {
 137                                 if (oob)
 138                                         len = 64;
 139                                 else
 140                                         len = 512;
 141                         }
 142
 143                         if (oob)
 144                                 onenand_read_oob(&onenand_mtd, ofs, len,
 145                                                  &retlen, (u_char *) addr);
 146                         else
 147                                 onenand_read(&onenand_mtd, ofs, len, &retlen,
 148                                              (u_char *) addr);
 149                         return 0;
 150                 }
 151
 152                 break;
 153         }
 154
 155         return 0;
 156 }
 157
 158 U_BOOT_CMD(
 159         onenand,        6,      1,      do_onenand,
 160         "onenand - OneNAND sub-system\n",
 161         "info   - show available OneNAND devices\n"
 162         "onenand read[.oob] addr ofs len - read data at ofs with len to addr\n"
 163         "onenand write addr ofs len - write data at ofs with len from addr\n"
 164         "onenand erase saddr eaddr - erase block start addr to end addr\n"
 165         "onenand block[.oob] addr block [page] [len] - "
 166                 "read data with (block [, page]) to addr"
 167 );
 168
 169 #endif /* CONFIG_CMD_ONENAND */