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                         ulong start, end;
  49                         ulong block;
  50
  51                         start = simple_strtoul(argv[2], NULL, 10);
  52                         end = simple_strtoul(argv[3], NULL, 10);
  53                         start -= (unsigned long)onenand_chip.base;
  54                         end -= (unsigned long)onenand_chip.base;
  55
  56                         if (!end || end < 0)
  57                                 end = start;
  58
  59                         printf("Erase block from %d to %d\n", start, end);
  60
  61                         for (block = start; block <= end; block++) {
  62                                 instr.addr = block << onenand_chip.erase_shift;
  63                                 instr.len = 1 << onenand_chip.erase_shift;
  64                                 ret = onenand_erase(&onenand_mtd, &instr);
  65                                 if (ret) {
  66                                         printf("erase failed %d\n", block);
  67                                         break;
  68                                 }
  69                         }
  70
  71                         return 0;
  72                 }
  73
  74                 if (strncmp(argv[1], "read", 4) == 0) {
  75                         ulong addr = simple_strtoul(argv[2], NULL, 16);
  76                         ulong ofs = simple_strtoul(argv[3], NULL, 16);
  77                         size_t len = simple_strtoul(argv[4], NULL, 16);
  78                         size_t retlen = 0;
  79                         int oob = strncmp(argv[1], "read.oob", 8) ? 0 : 1;
  80
  81                         ofs -= (unsigned long)onenand_chip.base;
  82
  83                         if (oob)
  84                                 onenand_read_oob(&onenand_mtd, ofs, len,
  85                                                  &retlen, (u_char *) addr);
  86                         else
  87                                 onenand_read(&onenand_mtd, ofs, len, &retlen,
  88                                              (u_char *) addr);
  89                         printf("Done\n");
  90
  91                         return 0;
  92                 }
  93
  94                 if (strncmp(argv[1], "write", 5) == 0) {
  95                         ulong addr = simple_strtoul(argv[2], NULL, 16);
  96                         ulong ofs = simple_strtoul(argv[3], NULL, 16);
  97                         size_t len = simple_strtoul(argv[4], NULL, 16);
  98                         size_t retlen = 0;
  99
 100                         ofs -= (unsigned long)onenand_chip.base;
 101
 102                         onenand_write(&onenand_mtd, ofs, len, &retlen,
 103                                       (u_char *) addr);
 104                         printf("Done\n");
 105
 106                         return 0;
 107                 }
 108
 109                 if (strncmp(argv[1], "block", 5) == 0) {
 110                         ulong addr = simple_strtoul(argv[2], NULL, 16);
 111                         ulong block = simple_strtoul(argv[3], NULL, 10);
 112                         ulong page = simple_strtoul(argv[4], NULL, 10);
 113                         size_t len = simple_strtol(argv[5], NULL, 10);
 114                         size_t retlen = 0;
 115                         ulong ofs;
 116                         int oob = strncmp(argv[1], "block.oob", 9) ? 0 : 1;
 117
 118                         ofs = block << onenand_chip.erase_shift;
 119                         if (page)
 120                                 ofs += page << onenand_chip.page_shift;
 121
 122                         if (!len) {
 123                                 if (oob)
 124                                         len = 64;
 125                                 else
 126                                         len = 512;
 127                         }
 128
 129                         if (oob)
 130                                 onenand_read_oob(&onenand_mtd, ofs, len,
 131                                                  &retlen, (u_char *) addr);
 132                         else
 133                                 onenand_read(&onenand_mtd, ofs, len, &retlen,
 134                                              (u_char *) addr);
 135                         return 0;
 136                 }
 137
 138                 break;
 139         }
 140
 141         return 0;
 142 }
 143
 144 U_BOOT_CMD(
 145         onenand,        6,      1,      do_onenand,
 146         "onenand - OneNAND sub-system\n",
 147         "info   - show available OneNAND devices\n"
 148         "onenand read[.oob] addr ofs len - read data at ofs with len to addr\n"
 149         "onenand write addr ofs len - write data at ofs with len from addr\n"
 150         "onenand erase saddr eaddr - erase block start addr to end addr\n"
 151         "onenand block[.oob] addr block [page] [len] - "
 152                 "read data with (block [, page]) to addr"
 153 );
 154
 155 #endif /* CONFIG_CMD_ONENAND */