1 files changed, 273 insertions, 0 deletions
diff --git a/cmd/host.c b/cmd/host.c
new file mode 100644
index 00000000000..e03576b4d2d
--- /dev/null
+++ b/cmd/host.c
@@ -0,0 +1,273 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2012, Google Inc.
+ */
+
+#include <command.h>
+#include <dm.h>
+#include <fs.h>
+#include <part.h>
+#include <sandbox_host.h>
+#include <dm/device_compat.h>
+#include <dm/device-internal.h>
+#include <dm/uclass-internal.h>
+#include <linux/errno.h>
+#include <linux/log2.h>
+
+static int do_host_load(struct cmd_tbl *cmdtp, int flag, int argc,
+			char *const argv[])
+{
+	return do_load(cmdtp, flag, argc, argv, FS_TYPE_SANDBOX);
+}
+
+static int do_host_ls(struct cmd_tbl *cmdtp, int flag, int argc,
+		      char *const argv[])
+{
+	return do_ls(cmdtp, flag, argc, argv, FS_TYPE_SANDBOX);
+}
+
+static int do_host_size(struct cmd_tbl *cmdtp, int flag, int argc,
+			char *const argv[])
+{
+	return do_size(cmdtp, flag, argc, argv, FS_TYPE_SANDBOX);
+}
+
+static int do_host_save(struct cmd_tbl *cmdtp, int flag, int argc,
+			char *const argv[])
+{
+	return do_save(cmdtp, flag, argc, argv, FS_TYPE_SANDBOX);
+}
+
+static int do_host_bind(struct cmd_tbl *cmdtp, int flag, int argc,
+			char *const argv[])
+{
+	bool removable = false;
+	struct udevice *dev;
+	const char *label;
+	char *file;
+	unsigned long blksz = DEFAULT_BLKSZ;
+	int ret;
+
+	/* Skip 'bind' */
+	argc--;
+	argv++;
+	if (argc < 2)
+		return CMD_RET_USAGE;
+
+	if (!strcmp(argv[0], "-r")) {
+		removable = true;
+		argc--;
+		argv++;
+	}
+
+	if (argc < 2 || argc > 3)
+		return CMD_RET_USAGE;
+	label = argv[0];
+	file = argv[1];
+	if (argc > 2) {
+		blksz = dectoul(argv[2], NULL);
+		if (blksz < DEFAULT_BLKSZ || !is_power_of_2(blksz)) {
+			printf("blksz must be >= 512 and power of 2\n");
+			return CMD_RET_FAILURE;
+		}
+	}
+
+	ret = host_create_attach_file(label, file, removable, blksz, &dev);
+	if (ret) {
+		printf("Cannot create device / bind file\n");
+		return CMD_RET_FAILURE;
+	}
+
+	return 0;
+}
+
+/**
+ * parse_host_label() - Parse a device label or sequence number
+ *
+ * This shows an error if it returns NULL
+ *
+ * @label: String containing the label or sequence number
+ * Returns: Associated device, or NULL if not found
+ */
+static struct udevice *parse_host_label(const char *label)
+{
+	struct udevice *dev;
+
+	dev = host_find_by_label(label);
+	if (!dev) {
+		int devnum;
+		char *ep;
+
+		devnum = hextoul(label, &ep);
+		if (*ep ||
+		    uclass_find_device_by_seq(UCLASS_HOST, devnum, &dev)) {
+			printf("No such device '%s'\n", label);
+			return NULL;
+		}
+	}
+
+	return dev;
+}
+
+static int do_host_unbind(struct cmd_tbl *cmdtp, int flag, int argc,
+			  char *const argv[])
+{
+	struct udevice *dev;
+	const char *label;
+	int ret;
+
+	if (argc < 2)
+		return CMD_RET_USAGE;
+
+	label = argv[1];
+	dev = parse_host_label(label);
+	if (!dev)
+		return CMD_RET_FAILURE;
+
+	ret = host_detach_file(dev);
+	if (ret) {
+		printf("Cannot detach file (err=%d)\n", ret);
+		return CMD_RET_FAILURE;
+	}
+
+	ret = device_unbind(dev);
+	if (ret) {
+		printf("Cannot attach file\n");
+		ret = device_unbind(dev);
+		if (ret)
+			printf("Cannot unbind device '%s'\n", dev->name);
+		return CMD_RET_FAILURE;
+	}
+
+	return 0;
+}
+
+static void show_host_dev(struct udevice *dev)
+{
+	struct host_sb_plat *plat = dev_get_plat(dev);
+	struct blk_desc *desc;
+	struct udevice *blk;
+	int ret;
+
+	printf("%3d ", dev_seq(dev));
+	if (!plat->fd) {
+		printf("Not bound to a backing file\n");
+		return;
+	}
+	ret = blk_get_from_parent(dev, &blk);
+	if (ret)  /* cannot happen */
+		return;
+
+	desc = dev_get_uclass_plat(blk);
+	printf("%12lu %6lu %-15s %s\n", (unsigned long)desc->lba, desc->blksz,
+	       plat->label, plat->filename);
+}
+
+static int do_host_info(struct cmd_tbl *cmdtp, int flag, int argc,
+			char *const argv[])
+{
+	struct udevice *dev;
+
+	if (argc < 1)
+		return CMD_RET_USAGE;
+
+	dev = NULL;
+	if (argc >= 2) {
+		dev = parse_host_label(argv[1]);
+		if (!dev)
+			return CMD_RET_FAILURE;
+	}
+
+	printf("%3s %12s %6s %-15s %s\n",
+	       "dev", "blocks", "blksz", "label", "path");
+	if (dev) {
+		show_host_dev(dev);
+	} else {
+		struct uclass *uc;
+
+		uclass_id_foreach_dev(UCLASS_HOST, dev, uc)
+			show_host_dev(dev);
+	}
+
+	return 0;
+}
+
+static int do_host_dev(struct cmd_tbl *cmdtp, int flag, int argc,
+		       char *const argv[])
+{
+	struct udevice *dev;
+	const char *label;
+
+	if (argc < 1 || argc > 3)
+		return CMD_RET_USAGE;
+
+	if (argc == 1) {
+		struct host_sb_plat *plat;
+
+		dev = host_get_cur_dev();
+		if (!dev) {
+			printf("No current host device\n");
+			return CMD_RET_FAILURE;
+		}
+		plat = dev_get_plat(dev);
+		printf("Current host device: %d: %s\n", dev_seq(dev),
+		       plat->label);
+		return 0;
+	}
+
+	label = argv[1];
+	dev = parse_host_label(argv[1]);
+	if (!dev)
+		return CMD_RET_FAILURE;
+
+	host_set_cur_dev(dev);
+
+	return 0;
+}
+
+static struct cmd_tbl cmd_host_sub[] = {
+	U_BOOT_CMD_MKENT(load, 7, 0, do_host_load, "", ""),
+	U_BOOT_CMD_MKENT(ls, 3, 0, do_host_ls, "", ""),
+	U_BOOT_CMD_MKENT(save, 6, 0, do_host_save, "", ""),
+	U_BOOT_CMD_MKENT(size, 3, 0, do_host_size, "", ""),
+	U_BOOT_CMD_MKENT(bind, 4, 0, do_host_bind, "", ""),
+	U_BOOT_CMD_MKENT(unbind, 4, 0, do_host_unbind, "", ""),
+	U_BOOT_CMD_MKENT(info, 3, 0, do_host_info, "", ""),
+	U_BOOT_CMD_MKENT(dev, 0, 1, do_host_dev, "", ""),
+};
+
+static int do_host(struct cmd_tbl *cmdtp, int flag, int argc,
+		   char *const argv[])
+{
+	struct cmd_tbl *c;
+
+	/* Skip past 'host' */
+	argc--;
+	argv++;
+
+	c = find_cmd_tbl(argv[0], cmd_host_sub, ARRAY_SIZE(cmd_host_sub));
+
+	if (c)
+		return c->cmd(cmdtp, flag, argc, argv);
+	else
+		return CMD_RET_USAGE;
+}
+
+U_BOOT_CMD(
+	host, 8, 1, do_host,
+	"Miscellaneous host commands",
+	"load hostfs - <addr> <filename> [<bytes> <offset>]  - "
+		"load a file from host\n"
+	"host ls hostfs - <filename>                    - list files on host\n"
+	"host save hostfs - <addr> <filename> <bytes> [<offset>] - "
+		"save a file to host\n"
+	"host size hostfs - <filename> - determine size of file on host\n"
+	"host bind [-r] <label> <filename> [<blksz>] - bind \"host\" device to file,\n"
+	"     and optionally set the device's logical block size\n"
+	"     -r = mark as removable\n"
+	"host unbind <label>     - unbind file from \"host\" device\n"
+	"host info [<label>]     - show device binding & info\n"
+	"host dev [<label>]      - set or retrieve the current host device\n"
+	"host commands use the \"hostfs\" device. The \"host\" device is used\n"
+	"with standard IO commands such as fatls or ext2load"
+);