cmd/sata.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (C) 2000-2005, DENX Software Engineering
   4  *              Wolfgang Denk <wd@denx.de>
   5  * Copyright (C) Procsys. All rights reserved.
   6  *              Mushtaq Khan <mushtaq_k@procsys.com>
   7  *                      <mushtaqk_921@yahoo.co.in>
   8  * Copyright (C) 2008 Freescale Semiconductor, Inc.
   9  *              Dave Liu <daveliu@freescale.com>
  10  */
  11
  12 #include <common.h>
  13 #include <ahci.h>
  14 #include <dm.h>
  15 #include <command.h>
  16 #include <part.h>
  17 #include <sata.h>
  18 #include <dm/device-internal.h>
  19 #include <dm/uclass-internal.h>
  20
  21 static int sata_curr_device = -1;
  22
  23 int sata_remove(int devnum)
  24 {
  25 #ifdef CONFIG_AHCI
  26         struct udevice *dev;
  27         int rc;
  28
  29         blk_unbind_all(IF_TYPE_SATA);
  30
  31         rc = uclass_find_device(UCLASS_AHCI, devnum, &dev);
  32         if (!rc && !dev)
  33                 rc = uclass_find_first_device(UCLASS_AHCI, &dev);
  34         if (rc || !dev) {
  35                 printf("Cannot find SATA device %d (err=%d)\n", devnum, rc);
  36                 return CMD_RET_FAILURE;
  37         }
  38
  39         rc = device_remove(dev, DM_REMOVE_NORMAL);
  40         if (rc) {
  41                 printf("Cannot remove SATA device '%s' (err=%d)\n", dev->name,
  42                        rc);
  43                 return CMD_RET_FAILURE;
  44         }
  45
  46         return 0;
  47 #else
  48         return sata_stop();
  49 #endif
  50 }
  51
  52 int sata_probe(int devnum)
  53 {
  54 #ifdef CONFIG_AHCI
  55         struct udevice *dev;
  56         int rc;
  57
  58         rc = uclass_get_device(UCLASS_AHCI, devnum, &dev);
  59         if (rc)
  60                 rc = uclass_find_first_device(UCLASS_AHCI, &dev);
  61         if (rc) {
  62                 printf("Cannot probe SATA device %d (err=%d)\n", devnum, rc);
  63                 return CMD_RET_FAILURE;
  64         }
  65         if (!dev) {
  66                 printf("No SATA device found!\n");
  67                 return CMD_RET_FAILURE;
  68         }
  69         rc = sata_scan(dev);
  70         if (rc) {
  71                 printf("Cannot scan SATA device %d (err=%d)\n", devnum, rc);
  72                 return CMD_RET_FAILURE;
  73         }
  74
  75         return 0;
  76 #else
  77         return sata_initialize() < 0 ? CMD_RET_FAILURE : CMD_RET_SUCCESS;
  78 #endif
  79 }
  80
  81 static int do_sata(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  82 {
  83         int rc = 0;
  84
  85         if (argc >= 2) {
  86                 int devnum = 0;
  87
  88                 if (argc == 3)
  89                         devnum = (int)simple_strtoul(argv[2], NULL, 10);
  90                 if (!strcmp(argv[1], "stop"))
  91                         return sata_remove(devnum);
  92
  93                 if (!strcmp(argv[1], "init")) {
  94                         if (sata_curr_device != -1) {
  95                                 rc = sata_remove(devnum);
  96                                 if (rc)
  97                                         return rc;
  98                         }
  99
 100                         return sata_probe(devnum);
 101                 }
 102         }
 103
 104         /* If the user has not yet run `sata init`, do it now */
 105         if (sata_curr_device == -1) {
 106                 rc = sata_probe(0);
 107                 if (rc)
 108                         return rc;
 109                 sata_curr_device = 0;
 110         }
 111
 112         return blk_common_cmd(argc, argv, IF_TYPE_SATA, &sata_curr_device);
 113 }
 114
 115 U_BOOT_CMD(
 116         sata, 5, 1, do_sata,
 117         "SATA sub system",
 118         "init - init SATA sub system\n"
 119         "sata stop [dev] - disable SATA sub system or device\n"
 120         "sata info - show available SATA devices\n"
 121         "sata device [dev] - show or set current device\n"
 122         "sata part [dev] - print partition table\n"
 123         "sata read addr blk# cnt\n"
 124         "sata write addr blk# cnt"
 125 );