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/*
* Copyright (C) 2011 Samsung Electronics
* Lukasz Majewski <l.majewski@samsung.com>
*
* Copyright (c) 2015, NVIDIA CORPORATION. All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <errno.h>
#include <common.h>
#include <command.h>
#include <console.h>
#include <g_dnl.h>
#include <part.h>
#include <usb.h>
#include <usb_mass_storage.h>
static int ums_read_sector(struct ums *ums_dev,
ulong start, lbaint_t blkcnt, void *buf)
{
struct blk_desc *block_dev = &ums_dev->block_dev;
lbaint_t blkstart = start + ums_dev->start_sector;
return blk_dread(block_dev, blkstart, blkcnt, buf);
}
static int ums_write_sector(struct ums *ums_dev,
ulong start, lbaint_t blkcnt, const void *buf)
{
struct blk_desc *block_dev = &ums_dev->block_dev;
lbaint_t blkstart = start + ums_dev->start_sector;
return blk_dwrite(block_dev, blkstart, blkcnt, buf);
}
static struct ums *ums;
static int ums_count;
static void ums_fini(void)
{
int i;
for (i = 0; i < ums_count; i++)
free((void *)ums[i].name);
free(ums);
ums = NULL;
ums_count = 0;
}
#define UMS_NAME_LEN 16
static int ums_init(const char *devtype, const char *devnums_part_str)
{
char *s, *t, *devnum_part_str, *name;
struct blk_desc *block_dev;
disk_partition_t info;
int partnum;
int ret = -1;
struct ums *ums_new;
s = strdup(devnums_part_str);
if (!s)
return -1;
t = s;
ums_count = 0;
for (;;) {
devnum_part_str = strsep(&t, ",");
if (!devnum_part_str)
break;
partnum = blk_get_device_part_str(devtype, devnum_part_str,
&block_dev, &info, 1);
if (partnum < 0)
goto cleanup;
/* Check if the argument is in legacy format. If yes,
* expose all partitions by setting the partnum = 0
* e.g. ums 0 mmc 0
*/
if (!strchr(devnum_part_str, ':'))
partnum = 0;
/* f_mass_storage.c assumes SECTOR_SIZE sectors */
if (block_dev->blksz != SECTOR_SIZE)
goto cleanup;
ums_new = realloc(ums, (ums_count + 1) * sizeof(*ums));
if (!ums_new)
goto cleanup;
ums = ums_new;
/* if partnum = 0, expose all partitions */
if (partnum == 0) {
ums[ums_count].start_sector = 0;
ums[ums_count].num_sectors = block_dev->lba;
} else {
ums[ums_count].start_sector = info.start;
ums[ums_count].num_sectors = info.size;
}
ums[ums_count].read_sector = ums_read_sector;
ums[ums_count].write_sector = ums_write_sector;
name = malloc(UMS_NAME_LEN);
if (!name)
goto cleanup;
snprintf(name, UMS_NAME_LEN, "UMS disk %d", ums_count);
ums[ums_count].name = name;
ums[ums_count].block_dev = *block_dev;
printf("UMS: LUN %d, dev %d, hwpart %d, sector %#x, count %#x\n",
ums_count, ums[ums_count].block_dev.devnum,
ums[ums_count].block_dev.hwpart,
ums[ums_count].start_sector,
ums[ums_count].num_sectors);
ums_count++;
}
if (ums_count)
ret = 0;
cleanup:
free(s);
if (ret < 0)
ums_fini();
return ret;
}
static int do_usb_mass_storage(cmd_tbl_t *cmdtp, int flag,
int argc, char * const argv[])
{
const char *usb_controller;
const char *devtype;
const char *devnum;
unsigned int controller_index;
int rc;
int cable_ready_timeout __maybe_unused;
if (argc < 3)
return CMD_RET_USAGE;
usb_controller = argv[1];
if (argc >= 4) {
devtype = argv[2];
devnum = argv[3];
} else {
devtype = "mmc";
devnum = argv[2];
}
rc = ums_init(devtype, devnum);
if (rc < 0)
return CMD_RET_FAILURE;
controller_index = (unsigned int)(simple_strtoul(
usb_controller, NULL, 0));
if (board_usb_init(controller_index, USB_INIT_DEVICE)) {
pr_err("Couldn't init USB controller.");
rc = CMD_RET_FAILURE;
goto cleanup_ums_init;
}
rc = fsg_init(ums, ums_count);
if (rc) {
pr_err("fsg_init failed");
rc = CMD_RET_FAILURE;
goto cleanup_board;
}
rc = g_dnl_register("usb_dnl_ums");
if (rc) {
pr_err("g_dnl_register failed");
rc = CMD_RET_FAILURE;
goto cleanup_board;
}
/* Timeout unit: seconds */
cable_ready_timeout = UMS_CABLE_READY_TIMEOUT;
if (!g_dnl_board_usb_cable_connected()) {
/*
* Won't execute if we don't know whether the cable is
* connected.
*/
puts("Please connect USB cable.\n");
while (!g_dnl_board_usb_cable_connected()) {
if (ctrlc()) {
puts("\rCTRL+C - Operation aborted.\n");
rc = CMD_RET_SUCCESS;
goto cleanup_register;
}
if (!cable_ready_timeout) {
puts("\rUSB cable not detected.\n" \
"Command exit.\n");
rc = CMD_RET_SUCCESS;
goto cleanup_register;
}
printf("\rAuto exit in: %.2d s.", cable_ready_timeout);
mdelay(1000);
cable_ready_timeout--;
}
puts("\r\n");
}
while (1) {
usb_gadget_handle_interrupts(controller_index);
rc = fsg_main_thread(NULL);
if (rc) {
/* Check I/O error */
if (rc == -EIO)
printf("\rCheck USB cable connection\n");
/* Check CTRL+C */
if (rc == -EPIPE)
printf("\rCTRL+C - Operation aborted\n");
rc = CMD_RET_SUCCESS;
goto cleanup_register;
}
}
cleanup_register:
g_dnl_unregister();
cleanup_board:
board_usb_cleanup(controller_index, USB_INIT_DEVICE);
cleanup_ums_init:
ums_fini();
return rc;
}
U_BOOT_CMD(ums, 4, 1, do_usb_mass_storage,
"Use the UMS [USB Mass Storage]",
"<USB_controller> [<devtype>] <dev[:part]> e.g. ums 0 mmc 0\n"
" devtype defaults to mmc"
);
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