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Merge tag 'xilinx-for-v2018.03' of git://git.denx.de/u-boot-microblaze
[u-boot] / 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  * SPDX-License-Identifier:     GPL-2.0+
11  */
12
13 #include <common.h>
14 #include <ahci.h>
15 #include <dm.h>
16 #include <command.h>
17 #include <part.h>
18 #include <sata.h>
19 #include <dm/device-internal.h>
20 #include <dm/uclass-internal.h>
21
22 static int sata_curr_device = -1;
23
24 int sata_remove(int devnum)
25 {
26 #ifdef CONFIG_AHCI
27         struct udevice *dev;
28         int rc;
29
30         rc = uclass_find_device(UCLASS_AHCI, devnum, &dev);
31         if (!rc && !dev)
32                 rc = uclass_find_first_device(UCLASS_AHCI, &dev);
33         if (rc || !dev) {
34                 printf("Cannot find SATA device %d (err=%d)\n", devnum, rc);
35                 return CMD_RET_FAILURE;
36         }
37
38         rc = device_remove(dev, DM_REMOVE_NORMAL);
39         if (rc) {
40                 printf("Cannot remove SATA device '%s' (err=%d)\n", dev->name,
41                        rc);
42                 return CMD_RET_FAILURE;
43         }
44
45         return 0;
46 #else
47         return sata_stop();
48 #endif
49 }
50
51 int sata_probe(int devnum)
52 {
53 #ifdef CONFIG_AHCI
54         struct udevice *dev;
55         struct udevice *blk;
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         rc = sata_scan(dev);
66         if (rc) {
67                 printf("Cannot scan SATA device %d (err=%d)\n", devnum, rc);
68                 return CMD_RET_FAILURE;
69         }
70
71         rc = blk_get_from_parent(dev, &blk);
72         if (!rc) {
73                 struct blk_desc *desc = dev_get_uclass_platdata(blk);
74
75                 if (desc->lba > 0 && desc->blksz > 0)
76                         part_init(desc);
77         }
78
79         return 0;
80 #else
81         return sata_initialize() < 0 ? CMD_RET_FAILURE : CMD_RET_SUCCESS;
82 #endif
83 }
84
85 static int do_sata(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
86 {
87         int rc = 0;
88
89         if (argc >= 2) {
90                 int devnum = 0;
91
92                 if (argc == 3)
93                         devnum = (int)simple_strtoul(argv[2], NULL, 10);
94                 if (!strcmp(argv[1], "stop"))
95                         return sata_remove(devnum);
96
97                 if (!strcmp(argv[1], "init")) {
98                         if (sata_curr_device != -1) {
99                                 rc = sata_remove(devnum);
100                                 if (rc)
101                                         return rc;
102                         }
103
104                         return sata_probe(devnum);
105                 }
106         }
107
108         /* If the user has not yet run `sata init`, do it now */
109         if (sata_curr_device == -1) {
110                 rc = sata_probe(0);
111                 if (rc < 0)
112                         return CMD_RET_FAILURE;
113                 sata_curr_device = 0;
114         }
115
116         return blk_common_cmd(argc, argv, IF_TYPE_SATA, &sata_curr_device);
117 }
118
119 U_BOOT_CMD(
120         sata, 5, 1, do_sata,
121         "SATA sub system",
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"
129 );