mirror of
https://github.com/AsahiLinux/u-boot
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a57adacf50
This patch introduses config which allows interrupt run of usb mass storage with any key. This is especially useful on devices with limited input capabilities like tablets and smatphones which have only gpio keys in direct access. Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
261 lines
5.5 KiB
C
261 lines
5.5 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2011 Samsung Electronics
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* Lukasz Majewski <l.majewski@samsung.com>
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*
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* Copyright (c) 2015, NVIDIA CORPORATION. All rights reserved.
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*/
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#include <common.h>
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#include <blk.h>
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#include <command.h>
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#include <console.h>
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#include <errno.h>
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#include <g_dnl.h>
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#include <malloc.h>
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#include <part.h>
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#include <usb.h>
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#include <usb_mass_storage.h>
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#include <watchdog.h>
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#include <linux/delay.h>
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static int ums_read_sector(struct ums *ums_dev,
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ulong start, lbaint_t blkcnt, void *buf)
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{
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struct blk_desc *block_dev = &ums_dev->block_dev;
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lbaint_t blkstart = start + ums_dev->start_sector;
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return blk_dread(block_dev, blkstart, blkcnt, buf);
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}
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static int ums_write_sector(struct ums *ums_dev,
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ulong start, lbaint_t blkcnt, const void *buf)
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{
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struct blk_desc *block_dev = &ums_dev->block_dev;
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lbaint_t blkstart = start + ums_dev->start_sector;
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return blk_dwrite(block_dev, blkstart, blkcnt, buf);
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}
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static struct ums *ums;
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static int ums_count;
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static void ums_fini(void)
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{
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int i;
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for (i = 0; i < ums_count; i++)
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free((void *)ums[i].name);
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free(ums);
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ums = NULL;
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ums_count = 0;
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}
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#define UMS_NAME_LEN 16
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static int ums_init(const char *devtype, const char *devnums_part_str)
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{
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char *s, *t, *devnum_part_str, *name;
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struct blk_desc *block_dev;
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struct disk_partition info;
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int partnum;
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int ret = -1;
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struct ums *ums_new;
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s = strdup(devnums_part_str);
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if (!s)
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return -1;
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t = s;
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ums_count = 0;
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for (;;) {
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devnum_part_str = strsep(&t, ",");
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if (!devnum_part_str)
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break;
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partnum = part_get_info_by_dev_and_name_or_num(devtype, devnum_part_str,
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&block_dev, &info, 1);
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if (partnum < 0)
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goto cleanup;
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/* Check if the argument is in legacy format. If yes,
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* expose all partitions by setting the partnum = 0
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* e.g. ums 0 mmc 0
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*/
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if (!strchr(devnum_part_str, ':'))
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partnum = 0;
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/* f_mass_storage.c assumes SECTOR_SIZE sectors */
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if (block_dev->blksz != SECTOR_SIZE)
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goto cleanup;
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ums_new = realloc(ums, (ums_count + 1) * sizeof(*ums));
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if (!ums_new)
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goto cleanup;
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ums = ums_new;
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/* if partnum = 0, expose all partitions */
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if (partnum == 0) {
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ums[ums_count].start_sector = 0;
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ums[ums_count].num_sectors = block_dev->lba;
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} else {
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ums[ums_count].start_sector = info.start;
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ums[ums_count].num_sectors = info.size;
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}
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ums[ums_count].read_sector = ums_read_sector;
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ums[ums_count].write_sector = ums_write_sector;
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name = malloc(UMS_NAME_LEN);
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if (!name)
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goto cleanup;
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snprintf(name, UMS_NAME_LEN, "UMS disk %d", ums_count);
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ums[ums_count].name = name;
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ums[ums_count].block_dev = *block_dev;
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printf("UMS: LUN %d, dev %s %d, hwpart %d, sector %#x, count %#x\n",
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ums_count, devtype, ums[ums_count].block_dev.devnum,
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ums[ums_count].block_dev.hwpart,
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ums[ums_count].start_sector,
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ums[ums_count].num_sectors);
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ums_count++;
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}
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if (ums_count)
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ret = 0;
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cleanup:
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free(s);
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if (ret < 0)
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ums_fini();
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return ret;
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}
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static int do_usb_mass_storage(struct cmd_tbl *cmdtp, int flag,
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int argc, char *const argv[])
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{
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const char *usb_controller;
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const char *devtype;
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const char *devnum;
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unsigned int controller_index;
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int rc;
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int cable_ready_timeout __maybe_unused;
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if (argc < 3)
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return CMD_RET_USAGE;
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usb_controller = argv[1];
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if (argc >= 4) {
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devtype = argv[2];
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devnum = argv[3];
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} else {
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devtype = "mmc";
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devnum = argv[2];
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}
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rc = ums_init(devtype, devnum);
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if (rc < 0)
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return CMD_RET_FAILURE;
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controller_index = (unsigned int)(simple_strtoul(
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usb_controller, NULL, 0));
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if (usb_gadget_initialize(controller_index)) {
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pr_err("Couldn't init USB controller.\n");
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rc = CMD_RET_FAILURE;
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goto cleanup_ums_init;
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}
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rc = fsg_init(ums, ums_count, controller_index);
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if (rc) {
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pr_err("fsg_init failed\n");
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rc = CMD_RET_FAILURE;
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goto cleanup_board;
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}
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rc = g_dnl_register("usb_dnl_ums");
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if (rc) {
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pr_err("g_dnl_register failed\n");
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rc = CMD_RET_FAILURE;
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goto cleanup_board;
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}
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/* Timeout unit: seconds */
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cable_ready_timeout = UMS_CABLE_READY_TIMEOUT;
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if (!g_dnl_board_usb_cable_connected()) {
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/*
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* Won't execute if we don't know whether the cable is
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* connected.
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*/
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puts("Please connect USB cable.\n");
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while (!g_dnl_board_usb_cable_connected()) {
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if (ctrlc()) {
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puts("\rCTRL+C - Operation aborted.\n");
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rc = CMD_RET_SUCCESS;
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goto cleanup_register;
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}
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if (!cable_ready_timeout) {
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puts("\rUSB cable not detected.\n" \
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"Command exit.\n");
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rc = CMD_RET_SUCCESS;
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goto cleanup_register;
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}
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printf("\rAuto exit in: %.2d s.", cable_ready_timeout);
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mdelay(1000);
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cable_ready_timeout--;
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}
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puts("\r\n");
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}
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while (1) {
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usb_gadget_handle_interrupts(controller_index);
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rc = fsg_main_thread(NULL);
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if (rc) {
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/* Check I/O error */
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if (rc == -EIO)
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printf("\rCheck USB cable connection\n");
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/* Check CTRL+C */
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if (rc == -EPIPE)
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printf("\rCTRL+C - Operation aborted\n");
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rc = CMD_RET_SUCCESS;
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goto cleanup_register;
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}
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if (IS_ENABLED(CONFIG_CMD_UMS_ABORT_KEYED)) {
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/* Abort by pressing any key */
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if (tstc()) {
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getchar();
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printf("\rOperation aborted.\n");
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rc = CMD_RET_SUCCESS;
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goto cleanup_register;
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}
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}
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schedule();
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}
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cleanup_register:
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g_dnl_unregister();
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cleanup_board:
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usb_gadget_release(controller_index);
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cleanup_ums_init:
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ums_fini();
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return rc;
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}
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U_BOOT_CMD(ums, 4, 1, do_usb_mass_storage,
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"Use the UMS [USB Mass Storage]",
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"<USB_controller> [<devtype>] <dev[:part]> e.g. ums 0 mmc 0\n"
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" devtype defaults to mmc"
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);
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