sata.c
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/*
* Copyright (C) 2000-2005, DENX Software Engineering
* Wolfgang Denk <wd@denx.de>
* Copyright (C) Procsys. All rights reserved.
* Mushtaq Khan <mushtaq_k@procsys.com>
* <mushtaqk_921@yahoo.co.in>
* Copyright (C) 2008 Freescale Semiconductor, Inc.
* Dave Liu <daveliu@freescale.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <ahci.h>
#include <dm.h>
#include <command.h>
#include <part.h>
#include <sata.h>
#include <dm/device-internal.h>
#include <dm/uclass-internal.h>
static int sata_curr_device = -1;
int sata_remove(int devnum)
{
#ifdef CONFIG_AHCI
struct udevice *dev;
int rc;
rc = uclass_find_device(UCLASS_AHCI, devnum, &dev);
if (!rc && !dev)
rc = uclass_find_first_device(UCLASS_AHCI, &dev);
if (rc || !dev) {
printf("Cannot find SATA device %d (err=%d)\n", devnum, rc);
return CMD_RET_FAILURE;
}
rc = device_remove(dev, DM_REMOVE_NORMAL);
if (rc) {
printf("Cannot remove SATA device '%s' (err=%d)\n", dev->name,
rc);
return CMD_RET_FAILURE;
}
return 0;
#else
return sata_stop();
#endif
}
int sata_probe(int devnum)
{
#ifdef CONFIG_AHCI
struct udevice *dev;
struct udevice *blk;
int rc;
rc = uclass_get_device(UCLASS_AHCI, devnum, &dev);
if (rc)
rc = uclass_find_first_device(UCLASS_AHCI, &dev);
if (rc) {
printf("Cannot probe SATA device %d (err=%d)\n", devnum, rc);
return CMD_RET_FAILURE;
}
rc = sata_scan(dev);
if (rc) {
printf("Cannot scan SATA device %d (err=%d)\n", devnum, rc);
return CMD_RET_FAILURE;
}
rc = blk_get_from_parent(dev, &blk);
if (!rc) {
struct blk_desc *desc = dev_get_uclass_platdata(blk);
if (desc->lba > 0 && desc->blksz > 0)
part_init(desc);
}
return 0;
#else
return sata_initialize() < 0 ? CMD_RET_FAILURE : CMD_RET_SUCCESS;
#endif
}
static int do_sata(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
int rc = 0;
if (argc >= 2) {
int devnum = 0;
if (argc == 3)
devnum = (int)simple_strtoul(argv[2], NULL, 10);
if (!strcmp(argv[1], "stop")) {
sata_curr_device = -1;
return sata_remove(devnum);
}
if (!strcmp(argv[1], "init")) {
if (sata_curr_device != -1) {
rc = sata_remove(devnum);
if (rc)
return rc;
}
rc = sata_probe(devnum);
if (rc < 0)
return CMD_RET_FAILURE;
sata_curr_device = rc;
return CMD_RET_SUCCESS;
}
}
/* If the user has not yet run `sata init`, do it now */
if (sata_curr_device == -1) {
rc = sata_probe(0);
if (rc < 0)
return CMD_RET_FAILURE;
sata_curr_device = 0;
}
return blk_common_cmd(argc, argv, IF_TYPE_SATA, &sata_curr_device);
}
U_BOOT_CMD(
sata, 5, 1, do_sata,
"SATA sub system",
"init - init SATA sub system\n"
"sata stop [dev] - disable SATA sub system or device\n"
"sata info - show available SATA devices\n"
"sata device [dev] - show or set current device\n"
"sata part [dev] - print partition table\n"
"sata read addr blk# cnt\n"
"sata write addr blk# cnt"
);