common/cmd_sata.c

   1 /*
   2  * Copyright (C) 2000-2005, DENX Software Engineering
   3  *              Wolfgang Denk <wd@denx.de>
   4  * Copyright (C) Procsys. All rights reserved.
   5  *              Mushtaq Khan <mushtaq_k@procsys.com>
   6  *                      <mushtaqk_921@yahoo.co.in>
   7  * Copyright (C) 2008 Freescale Semiconductor, Inc.
   8  *              Dave Liu <daveliu@freescale.com>
   9  *
  10  * This program is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU General Public License as
  12  * published by the Free Software Foundation; either version 2 of
  13  * the License, or (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  23  * MA 02111-1307 USA
  24  */
  25
  26 #include <common.h>
  27 #include <command.h>
  28 #include <part.h>
  29 #include <sata.h>
  30
  31 static int sata_curr_device = -1;
  32 block_dev_desc_t sata_dev_desc[CONFIG_SYS_SATA_MAX_DEVICE];
  33
  34 int __sata_initialize(void)
  35 {
  36         int rc;
  37         int i;
  38
  39         for (i = 0; i < CONFIG_SYS_SATA_MAX_DEVICE; i++) {
  40                 memset(&sata_dev_desc[i], 0, sizeof(struct block_dev_desc));
  41                 sata_dev_desc[i].if_type = IF_TYPE_SATA;
  42                 sata_dev_desc[i].dev = i;
  43                 sata_dev_desc[i].part_type = PART_TYPE_UNKNOWN;
  44                 sata_dev_desc[i].type = DEV_TYPE_HARDDISK;
  45                 sata_dev_desc[i].lba = 0;
  46                 sata_dev_desc[i].blksz = 512;
  47                 sata_dev_desc[i].log2blksz = LOG2(sata_dev_desc[i].blksz);
  48                 sata_dev_desc[i].block_read = sata_read;
  49                 sata_dev_desc[i].block_write = sata_write;
  50
  51                 rc = init_sata(i);
  52                 if (!rc) {
  53                         rc = scan_sata(i);
  54                         if (!rc && (sata_dev_desc[i].lba > 0) &&
  55                                 (sata_dev_desc[i].blksz > 0))
  56                                 init_part(&sata_dev_desc[i]);
  57                 }
  58         }
  59         sata_curr_device = 0;
  60         return rc;
  61 }
  62 int sata_initialize(void) __attribute__((weak,alias("__sata_initialize")));
  63
  64 #ifdef CONFIG_PARTITIONS
  65 block_dev_desc_t *sata_get_dev(int dev)
  66 {
  67         return (dev < CONFIG_SYS_SATA_MAX_DEVICE) ? &sata_dev_desc[dev] : NULL;
  68 }
  69 #endif
  70
  71 static int do_sata(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  72 {
  73         int rc = 0;
  74
  75         if (argc == 2 && strcmp(argv[1], "init") == 0)
  76                 return sata_initialize();
  77
  78         /* If the user has not yet run `sata init`, do it now */
  79         if (sata_curr_device == -1)
  80                 if (sata_initialize())
  81                         return 1;
  82
  83         switch (argc) {
  84         case 0:
  85         case 1:
  86                 return CMD_RET_USAGE;
  87         case 2:
  88                 if (strncmp(argv[1],"inf", 3) == 0) {
  89                         int i;
  90                         putc('\n');
  91                         for (i = 0; i < CONFIG_SYS_SATA_MAX_DEVICE; ++i) {
  92                                 if (sata_dev_desc[i].type == DEV_TYPE_UNKNOWN)
  93                                         continue;
  94                                 printf ("SATA device %d: ", i);
  95                                 dev_print(&sata_dev_desc[i]);
  96                         }
  97                         return 0;
  98                 } else if (strncmp(argv[1],"dev", 3) == 0) {
  99                         if ((sata_curr_device < 0) || (sata_curr_device >= CONFIG_SYS_SATA_MAX_DEVICE)) {
 100                                 puts("\nno SATA devices available\n");
 101                                 return 1;
 102                         }
 103                         printf("\nSATA device %d: ", sata_curr_device);
 104                         dev_print(&sata_dev_desc[sata_curr_device]);
 105                         return 0;
 106                 } else if (strncmp(argv[1],"part",4) == 0) {
 107                         int dev, ok;
 108
 109                         for (ok = 0, dev = 0; dev < CONFIG_SYS_SATA_MAX_DEVICE; ++dev) {
 110                                 if (sata_dev_desc[dev].part_type != PART_TYPE_UNKNOWN) {
 111                                         ++ok;
 112                                         if (dev)
 113                                                 putc ('\n');
 114                                         print_part(&sata_dev_desc[dev]);
 115                                 }
 116                         }
 117                         if (!ok) {
 118                                 puts("\nno SATA devices available\n");
 119                                 rc ++;
 120                         }
 121                         return rc;
 122                 }
 123                 return CMD_RET_USAGE;
 124         case 3:
 125                 if (strncmp(argv[1], "dev", 3) == 0) {
 126                         int dev = (int)simple_strtoul(argv[2], NULL, 10);
 127
 128                         printf("\nSATA device %d: ", dev);
 129                         if (dev >= CONFIG_SYS_SATA_MAX_DEVICE) {
 130                                 puts ("unknown device\n");
 131                                 return 1;
 132                         }
 133                         dev_print(&sata_dev_desc[dev]);
 134
 135                         if (sata_dev_desc[dev].type == DEV_TYPE_UNKNOWN)
 136                                 return 1;
 137
 138                         sata_curr_device = dev;
 139
 140                         puts("... is now current device\n");
 141
 142                         return 0;
 143                 } else if (strncmp(argv[1], "part", 4) == 0) {
 144                         int dev = (int)simple_strtoul(argv[2], NULL, 10);
 145
 146                         if (sata_dev_desc[dev].part_type != PART_TYPE_UNKNOWN) {
 147                                 print_part(&sata_dev_desc[dev]);
 148                         } else {
 149                                 printf("\nSATA device %d not available\n", dev);
 150                                 rc = 1;
 151                         }
 152                         return rc;
 153                 }
 154                 return CMD_RET_USAGE;
 155
 156         default: /* at least 4 args */
 157                 if (strcmp(argv[1], "read") == 0) {
 158                         ulong addr = simple_strtoul(argv[2], NULL, 16);
 159                         ulong cnt = simple_strtoul(argv[4], NULL, 16);
 160                         ulong n;
 161                         lbaint_t blk = simple_strtoul(argv[3], NULL, 16);
 162
 163                         printf("\nSATA read: device %d block # %ld, count %ld ... ",
 164                                 sata_curr_device, blk, cnt);
 165
 166                         n = sata_read(sata_curr_device, blk, cnt, (u32 *)addr);
 167
 168                         /* flush cache after read */
 169                         flush_cache(addr, cnt * sata_dev_desc[sata_curr_device].blksz);
 170
 171                         printf("%ld blocks read: %s\n",
 172                                 n, (n==cnt) ? "OK" : "ERROR");
 173                         return (n == cnt) ? 0 : 1;
 174                 } else if (strcmp(argv[1], "write") == 0) {
 175                         ulong addr = simple_strtoul(argv[2], NULL, 16);
 176                         ulong cnt = simple_strtoul(argv[4], NULL, 16);
 177                         ulong n;
 178
 179                         lbaint_t blk = simple_strtoul(argv[3], NULL, 16);
 180
 181                         printf("\nSATA write: device %d block # %ld, count %ld ... ",
 182                                 sata_curr_device, blk, cnt);
 183
 184                         n = sata_write(sata_curr_device, blk, cnt, (u32 *)addr);
 185
 186                         printf("%ld blocks written: %s\n",
 187                                 n, (n == cnt) ? "OK" : "ERROR");
 188                         return (n == cnt) ? 0 : 1;
 189                 } else {
 190                         return CMD_RET_USAGE;
 191                 }
 192
 193                 return rc;
 194         }
 195 }
 196
 197 U_BOOT_CMD(
 198         sata, 5, 1, do_sata,
 199         "SATA sub system",
 200         "init - init SATA sub system\n"
 201         "sata info - show available SATA devices\n"
 202         "sata device [dev] - show or set current device\n"
 203         "sata part [dev] - print partition table\n"
 204         "sata read addr blk# cnt\n"
 205         "sata write addr blk# cnt"
 206 );