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*******************************************************************************/
#include <common.h>
#include <command.h>
#include <menu.h>
#include <malloc.h>

#include <ext4fs.h>
#include <ide.h>
#include <ata.h>

#if defined(CONFIG_CMD_BOOT_MENU)

extern int do_stage_boot(cmd_tbl_t * cmdtb, int flag, int argc, char * const argv[]);
extern int do_ext2load (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
extern int do_ext2ls (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
extern int do_usb(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
extern int do_mmcops(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);

#define BM_TIMEOUT		(5)
#define BM_SCRIPTS_LOCATION	"/boot_scripts/"
#define BM_OUT_BUF_SIZE		(1024)
#define BM_MAX_LIST_ITEM	(8)
struct bm_item {
	char key[4];
	char *name;
} bm_item_list[BM_MAX_LIST_ITEM];

void bm_item_print(void *item_data)
{
	struct bm_item *item = (struct bm_item *)item_data;

	printf("    %s : %s\n", item->key, item->name);
}

int do_boot_menu(cmd_tbl_t * cmdtb, int flag, int argc, char * const argv[])
{
	char *out_buffer, *filename, *ifname, *dst;
	char source_device[10];
	char dev_part[10];
	struct bm_item *choice;
	int j, i, device, part, len;
	block_dev_desc_t * dev_desc;
	struct menu *m = NULL;
	char *args_to_func[3];
	disk_partition_t info;

	out_buffer = (char *)malloc(BM_OUT_BUF_SIZE);
	if (out_buffer == NULL) {
		printf("boot_menu: Failed to allocate memory!");
		return 0;
	}

	/* Read interface name, device number and partition from boot_source_device
	   environment variable. It should be set by stage_boot command. */
	ifname = getenv("boot_source_device");
	if (ifname == NULL) {
		printf("boot_menu: Environment variable 'boot_source_device' must be defined.\n");
		goto error;
	}
	strncpy(source_device, ifname, sizeof(source_device));
	source_device[sizeof(source_device) - 1] = '\0';
	ifname = strchr(source_device, ' ');
	if (ifname == NULL) {
		printf("boot_menu: Incorrect format of 'boot_source_device' variable.\n");
		goto error;
	}
	*ifname = '\0';
	ifname++;

	len = strstr(ifname, ":") - ifname;
	strncpy(dev_part, ifname, len);
	dev_part[len] = '\0';
	device = simple_strtoul(ifname, NULL, 0);
	ifname = strchr(ifname, ':');
	if (ifname == NULL) {
		printf("boot_menu: Incorrect format of 'boot_source_device' variable.\n");
		goto error;
	}
	ifname++;
	part = simple_strtoul(ifname, NULL, 0);
	ifname = source_device;

	/* Initialize proper interface and check if the device exists. */
	if (strcmp(ifname, "ide") == 0)
		ide_init();
	else if (strcmp(ifname, "usb") == 0) {
		args_to_func[0]=ifname;
		args_to_func[1]="start";
		do_usb(cmdtb, 1, 2, args_to_func);
	} else if (strcmp(ifname, "mmc") == 0) {
		args_to_func[0]=ifname;
		args_to_func[1]="rescan";
		do_mmcops(cmdtb, 1, 2, args_to_func);
		args_to_func[0]=ifname;
		args_to_func[1]="dev";
		args_to_func[2]=dev_part;
		do_mmcops(cmdtb, 1, 3, args_to_func);

	}
	filename = BM_SCRIPTS_LOCATION;

	printf("Search for boot scripts in %s directory, on %s %d:%d [%s] device.\n",
		filename, ifname, device, part, dev_part);

	/* Read list of files in /boot_scripts/ directory. */
	out_buffer[0] = '\0';

	part = get_device_and_partition(args_to_func[0], dev_part, &dev_desc, &info, 1);
	if (part < 0)
		return 1;

	/* set the device as block device */
	ext4fs_set_blk_dev(dev_desc, &info);

	if (ext4fs_mount(info.size))
		ext4fs_ls (filename, out_buffer, BM_OUT_BUF_SIZE);
	ext4fs_close();

	/* Prepare a menu to select one of boot scripts. */
	putc('\n');
	putc('\n');
	m = menu_create("Select boot script:", BM_TIMEOUT * 10,
			0, bm_item_print);
	filename = out_buffer;
	j = 0;
	while (1) {
		filename = strstr(filename, ".scr");
		if (filename == NULL)
			break;
		if ((*(filename + 4) > 32) && (*(filename + 4) < 127)) {
			filename += 4;
			continue;
		}

		i = 4;
		while ((*(filename - 1) != ' ') && (*(filename - 1) != '\n')) {
			filename--;
			i++;
		}

		if (*(filename + i) == '\0')
			i = -1;
		else {
			*(filename + i) = '\0';
			i++;
		}

		sprintf(bm_item_list[j].key, "%d", j + 1);
		bm_item_list[j].name = filename;
		menu_item_add(m, bm_item_list[j].key, &bm_item_list[j]);

		j++;
		if (i < 0)
			break;
		if (j >= BM_MAX_LIST_ITEM)
			break;
		filename += i;
	}
	if (j == 0) {
		printf("boot_menu: No boot scripts found.\n");
		goto error;
	}

	/* Choose default value. If the bootmenu_default variable does not
	   exists or is invalid, the first option will be the default. */
	filename = getenv("bootmenu_default");
	i = j;
	if (filename) {
		for (i = 0; i < j; i++)
			if (strcmp(filename, bm_item_list[i].name) == 0) {
				menu_default_set(m, bm_item_list[i].key);
				break;
			}
	}
	if (i == j) {
		menu_default_set(m, bm_item_list[0].key);
		filename = bm_item_list[0].name;
	}

	/* Show the menu and save the default option. */
	printf("\nPress any key to stop the count-down or the default boot "
		"script\n    (%s) will be used.\n", filename);

	if (menu_get_choice(m, (void**)&choice) != 1) {
		printf("boot_menu: Incorrect choice.\n");
		goto error;
	}
	menu_destroy(m);

	if ((!filename) || (strcmp(choice->name, filename) != 0)) {
		setenv("bootmenu_default", choice->name);
		saveenv();
	}

	/* Set device_partition and script_name to point to the chosen script and
	   call do_stage_boot. Copy original values and restore them after use. */
	ifname = getenv("device_partition");
	if (ifname) {
		dst = out_buffer + BM_OUT_BUF_SIZE - 1 - strlen(ifname);
		ifname = strcpy(dst, ifname);
	}
	filename = getenv("script_name");
	if (filename) {
		dst = ifname - 1 - strlen(filename);
		filename = strcpy(dst, filename);
	}

	sprintf(out_buffer, "%d:%d", device, part);
	setenv("device_partition", out_buffer);
	sprintf(out_buffer, "%s%s", BM_SCRIPTS_LOCATION, choice->name);
	setenv("script_name", out_buffer);

	args_to_func[0] = "stage_boot";
	if (strcmp(source_device, "ide") == 0)
		args_to_func[1] = "hd_scr";
	else if (strcmp(source_device, "usb") == 0)
		args_to_func[1] = "usb_scr";
	else if (strcmp(source_device, "mmc") == 0)
		args_to_func[1] = "mmc_scr";
	do_stage_boot(cmdtb, 1, 2, args_to_func);

	if (ifname)
		setenv("device_partition", ifname);
	if (filename)
		setenv("script_name", filename);

	free(out_buffer);
	return 1;

error:
	if (m)
		menu_destroy(m);
	free(out_buffer);
	return 0;
}

U_BOOT_CMD(boot_menu, 1, 1, do_boot_menu, "command allows to select boot script from boot device\n\
	example: boot_menu",
	"Usage:\n \
	 boot_menu - search device defined in boot_source_device variable for boot scripts and show menu.\n \
");

#endif