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
sata_remove(int devnum)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
sata_probe(int devnum)50 int sata_probe(int devnum)
51 {
52 #ifdef CONFIG_AHCI
53 struct udevice *dev;
54 int rc;
55
56 rc = uclass_get_device(UCLASS_AHCI, devnum, &dev);
57 if (rc)
58 rc = uclass_find_first_device(UCLASS_AHCI, &dev);
59 if (rc) {
60 printf("Cannot probe SATA device %d (err=%d)\n", devnum, rc);
61 return CMD_RET_FAILURE;
62 }
63 if (!dev) {
64 printf("No SATA device found!\n");
65 return CMD_RET_FAILURE;
66 }
67 rc = sata_scan(dev);
68 if (rc) {
69 printf("Cannot scan SATA device %d (err=%d)\n", devnum, rc);
70 return CMD_RET_FAILURE;
71 }
72
73 return 0;
74 #else
75 return sata_initialize() < 0 ? CMD_RET_FAILURE : CMD_RET_SUCCESS;
76 #endif
77 }
78
do_sata(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])79 static int do_sata(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
80 {
81 int rc = 0;
82
83 if (argc >= 2) {
84 int devnum = 0;
85
86 if (argc == 3)
87 devnum = (int)simple_strtoul(argv[2], NULL, 10);
88 if (!strcmp(argv[1], "stop"))
89 return sata_remove(devnum);
90
91 if (!strcmp(argv[1], "init")) {
92 if (sata_curr_device != -1) {
93 rc = sata_remove(devnum);
94 if (rc)
95 return rc;
96 }
97
98 return sata_probe(devnum);
99 }
100 }
101
102 /* If the user has not yet run `sata init`, do it now */
103 if (sata_curr_device == -1) {
104 rc = sata_probe(0);
105 if (rc)
106 return rc;
107 sata_curr_device = 0;
108 }
109
110 return blk_common_cmd(argc, argv, IF_TYPE_SATA, &sata_curr_device);
111 }
112
113 U_BOOT_CMD(
114 sata, 5, 1, do_sata,
115 "SATA sub system",
116 "init - init SATA sub system\n"
117 "sata stop [dev] - disable SATA sub system or device\n"
118 "sata info - show available SATA devices\n"
119 "sata device [dev] - show or set current device\n"
120 "sata part [dev] - print partition table\n"
121 "sata read addr blk# cnt\n"
122 "sata write addr blk# cnt"
123 );
124