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         rc = uclass_find_device(UCLASS_AHCI, devnum, &dev);
  30         if (!rc && !dev)
  31                 rc = uclass_find_first_device(UCLASS_AHCI, &dev);
  32         if (rc || !dev) {
  33                 printf("Cannot find SATA device %d (err=%d)\n", devnum, rc);
  34                 return CMD_RET_FAILURE;
  35         }
  36
  37         rc = device_remove(dev, DM_REMOVE_NORMAL);
  38         if (rc) {
  39                 printf("Cannot remove SATA device '%s' (err=%d)\n", dev->name,
  40                        rc);
  41                 return CMD_RET_FAILURE;
  42         }
  43
  44         return 0;
  45 #else
  46         return sata_stop();
  47 #endif
  48 }
  49
  50 int sata_probe(int devnum)
  51 {
  52 #ifdef CONFIG_AHCI
  53         struct udevice *dev;
  54         struct udevice *blk;
  55         int rc;
  56
  57         rc = uclass_get_device(UCLASS_AHCI, devnum, &dev);
  58         if (rc)
  59                 rc = uclass_find_first_device(UCLASS_AHCI, &dev);
  60         if (rc) {
  61                 printf("Cannot probe SATA device %d (err=%d)\n", devnum, rc);
  62                 return CMD_RET_FAILURE;
  63         }
  64         rc = sata_scan(dev);
  65         if (rc) {
  66                 printf("Cannot scan SATA device %d (err=%d)\n", devnum, rc);
  67                 return CMD_RET_FAILURE;
  68         }
  69
  70         rc = blk_get_from_parent(dev, &blk);
  71         if (!rc) {
  72                 struct blk_desc *desc = dev_get_uclass_platdata(blk);
  73
  74                 if (desc->lba > 0 && desc->blksz > 0)
  75                         part_init(desc);
  76         }
  77
  78         return 0;
  79 #else
  80         return sata_initialize() < 0 ? CMD_RET_FAILURE : CMD_RET_SUCCESS;
  81 #endif
  82 }
  83
  84 static int do_sata(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  85 {
  86         int rc = 0;
  87
  88         if (argc >= 2) {
  89                 int devnum = 0;
  90
  91                 if (argc == 3)
  92                         devnum = (int)simple_strtoul(argv[2], NULL, 10);
  93                 if (!strcmp(argv[1], "stop"))
  94                         return sata_remove(devnum);
  95
  96                 if (!strcmp(argv[1], "init")) {
  97                         if (sata_curr_device != -1) {
  98                                 rc = sata_remove(devnum);
  99                                 if (rc)
 100                                         return rc;
 101                         }
 102
 103                         return sata_probe(devnum);
 104                 }
 105         }
 106
 107         /* If the user has not yet run `sata init`, do it now */
 108         if (sata_curr_device == -1) {
 109                 rc = sata_probe(0);
 110                 if (rc < 0)
 111                         return CMD_RET_FAILURE;
 112                 sata_curr_device = 0;
 113         }
 114
 115         return blk_common_cmd(argc, argv, IF_TYPE_SATA, &sata_curr_device);
 116 }
 117
 118 U_BOOT_CMD(
 119         sata, 5, 1, do_sata,
 120         "SATA sub system",
 121         "init - init SATA sub system\n"
 122         "sata stop [dev] - disable SATA sub system or device\n"
 123         "sata info - show available SATA devices\n"
 124         "sata device [dev] - show or set current device\n"
 125         "sata part [dev] - print partition table\n"
 126         "sata read addr blk# cnt\n"
 127         "sata write addr blk# cnt"
 128 );