summaryrefslogtreecommitdiff
path: root/cmd/usb_mass_storage.c
diff options
context:
space:
mode:
Diffstat (limited to 'cmd/usb_mass_storage.c')
-rw-r--r--cmd/usb_mass_storage.c235
1 files changed, 235 insertions, 0 deletions
diff --git a/cmd/usb_mass_storage.c b/cmd/usb_mass_storage.c
new file mode 100644
index 0000000..0415591
--- /dev/null
+++ b/cmd/usb_mass_storage.c
@@ -0,0 +1,235 @@
+/*
+ * 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)
+{
+ block_dev_desc_t *block_dev = &ums_dev->block_dev;
+ lbaint_t blkstart = start + ums_dev->start_sector;
+
+ return block_dev->block_read(block_dev, blkstart, blkcnt, buf);
+}
+
+static int ums_write_sector(struct ums *ums_dev,
+ ulong start, lbaint_t blkcnt, const void *buf)
+{
+ block_dev_desc_t *block_dev = &ums_dev->block_dev;
+ lbaint_t blkstart = start + ums_dev->start_sector;
+
+ return block_dev->block_write(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 = 0;
+ ums_count = 0;
+}
+
+#define UMS_NAME_LEN 16
+
+static int ums_init(const char *devtype, const char *devnums)
+{
+ char *s, *t, *devnum, *name;
+ block_dev_desc_t *block_dev;
+ int ret;
+ struct ums *ums_new;
+
+ s = strdup(devnums);
+ if (!s)
+ return -1;
+
+ t = s;
+ ums_count = 0;
+
+ for (;;) {
+ devnum = strsep(&t, ",");
+ if (!devnum)
+ break;
+
+ ret = get_device(devtype, devnum, &block_dev);
+ if (ret < 0)
+ goto cleanup;
+
+ /* f_mass_storage.c assumes SECTOR_SIZE sectors */
+ if (block_dev->blksz != SECTOR_SIZE) {
+ ret = -1;
+ goto cleanup;
+ }
+
+ ums_new = realloc(ums, (ums_count + 1) * sizeof(*ums));
+ if (!ums_new) {
+ ret = -1;
+ goto cleanup;
+ }
+ ums = ums_new;
+
+ ums[ums_count].read_sector = ums_read_sector;
+ ums[ums_count].write_sector = ums_write_sector;
+ ums[ums_count].start_sector = 0;
+ ums[ums_count].num_sectors = block_dev->lba;
+ name = malloc(UMS_NAME_LEN);
+ if (!name) {
+ ret = -1;
+ 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.dev,
+ ums[ums_count].block_dev.hwpart,
+ ums[ums_count].start_sector,
+ ums[ums_count].num_sectors);
+
+ ums_count++;
+ }
+
+ if (!ums_count)
+ ret = -1;
+ else
+ ret = 0;
+
+cleanup:
+ free(s);
+
+ if (ret < 0)
+ ums_fini();
+
+ return ret;
+}
+
+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)) {
+ error("Couldn't init USB controller.");
+ rc = CMD_RET_FAILURE;
+ goto cleanup_ums_init;
+ }
+
+ rc = fsg_init(ums, ums_count);
+ if (rc) {
+ error("fsg_init failed");
+ rc = CMD_RET_FAILURE;
+ goto cleanup_board;
+ }
+
+ rc = g_dnl_register("usb_dnl_ums");
+ if (rc) {
+ error("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>] <devnum> e.g. ums 0 mmc 0\n"
+ " devtype defaults to mmc"
+);