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>
10 * SPDX-License-Identifier: GPL-2.0+
19 #include <dm/device-internal.h>
20 #include <dm/uclass-internal.h>
22 static int sata_curr_device = -1;
24 int sata_remove(int devnum)
30 rc = uclass_find_device(UCLASS_AHCI, devnum, &dev);
32 rc = uclass_find_first_device(UCLASS_AHCI, &dev);
34 printf("Cannot find SATA device %d (err=%d)\n", devnum, rc);
35 return CMD_RET_FAILURE;
38 rc = device_remove(dev, DM_REMOVE_NORMAL);
40 printf("Cannot remove SATA device '%s' (err=%d)\n", dev->name,
42 return CMD_RET_FAILURE;
51 int sata_probe(int devnum)
58 rc = uclass_get_device(UCLASS_AHCI, devnum, &dev);
60 rc = uclass_find_first_device(UCLASS_AHCI, &dev);
62 printf("Cannot probe SATA device %d (err=%d)\n", devnum, rc);
63 return CMD_RET_FAILURE;
67 printf("Cannot scan SATA device %d (err=%d)\n", devnum, rc);
68 return CMD_RET_FAILURE;
71 rc = blk_get_from_parent(dev, &blk);
73 struct blk_desc *desc = dev_get_uclass_platdata(blk);
75 if (desc->lba > 0 && desc->blksz > 0)
81 return sata_initialize() < 0 ? CMD_RET_FAILURE : CMD_RET_SUCCESS;
85 static int do_sata(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
93 devnum = (int)simple_strtoul(argv[2], NULL, 10);
94 if (!strcmp(argv[1], "stop"))
95 return sata_remove(devnum);
97 if (!strcmp(argv[1], "init")) {
98 if (sata_curr_device != -1) {
99 rc = sata_remove(devnum);
104 return sata_probe(devnum);
108 /* If the user has not yet run `sata init`, do it now */
109 if (sata_curr_device == -1) {
112 return CMD_RET_FAILURE;
113 sata_curr_device = 0;
116 return blk_common_cmd(argc, argv, IF_TYPE_SATA, &sata_curr_device);
122 "init - init SATA sub system\n"
123 "sata stop [dev] - disable SATA sub system or device\n"
124 "sata info - show available SATA devices\n"
125 "sata device [dev] - show or set current device\n"
126 "sata part [dev] - print partition table\n"
127 "sata read addr blk# cnt\n"
128 "sata write addr blk# cnt"