/*

   * SPDX-License-Identifier:	GPL-2.0+

   *
   * based on: cmd_jffs2.c
   *
   * 	Add support for a CRAMFS located in RAM
   */
  
  
  /*
   * CRAMFS support
   */
  #include <common.h>
  #include <command.h>
  #include <malloc.h>
  #include <linux/list.h>
  #include <linux/ctype.h>
  #include <jffs2/jffs2.h>
  #include <jffs2/load_kernel.h>
  #include <cramfs/cramfs_fs.h>
  
  /* enable/disable debugging messages */
  #define	DEBUG_CRAMFS
  #undef	DEBUG_CRAMFS
  
  #ifdef  DEBUG_CRAMFS
  # define DEBUGF(fmt, args...)	printf(fmt ,##args)
  #else
  # define DEBUGF(fmt, args...)
  #endif
  
  #ifdef CONFIG_CRAMFS_CMDLINE

  #include <flash.h>

  #ifdef CONFIG_SYS_NO_FLASH
  # define OFFSET_ADJUSTMENT	0
  #else
  # define OFFSET_ADJUSTMENT	(flash_info[id.num].start[0])
  #endif

  #ifndef CONFIG_CMD_JFFS2
  #include <linux/stat.h>
  char *mkmodestr(unsigned long mode, char *str)
  {
  	static const char *l = "xwr";
  	int mask = 1, i;
  	char c;
  
  	switch (mode & S_IFMT) {
  		case S_IFDIR:    str[0] = 'd'; break;
  		case S_IFBLK:    str[0] = 'b'; break;
  		case S_IFCHR:    str[0] = 'c'; break;
  		case S_IFIFO:    str[0] = 'f'; break;
  		case S_IFLNK:    str[0] = 'l'; break;
  		case S_IFSOCK:   str[0] = 's'; break;
  		case S_IFREG:    str[0] = '-'; break;
  		default:         str[0] = '?';
  	}
  
  	for(i = 0; i < 9; i++) {
  		c = l[i%3];
  		str[9-i] = (mode & mask)?c:'-';
  		mask = mask<<1;
  	}
  
  	if(mode & S_ISUID) str[3] = (mode & S_IXUSR)?'s':'S';
  	if(mode & S_ISGID) str[6] = (mode & S_IXGRP)?'s':'S';
  	if(mode & S_ISVTX) str[9] = (mode & S_IXOTH)?'t':'T';
  	str[10] = '\0';
  	return str;
  }
  #endif /* CONFIG_CMD_JFFS2 */
  
  extern int cramfs_check (struct part_info *info);
  extern int cramfs_load (char *loadoffset, struct part_info *info, char *filename);
  extern int cramfs_ls (struct part_info *info, char *filename);
  extern int cramfs_info (struct part_info *info);
  
  /***************************************************/
  /* U-boot commands				   */
  /***************************************************/
  
  /**
   * Routine implementing fsload u-boot command. This routine tries to load
   * a requested file from cramfs filesystem at location 'cramfsaddr'.
   * cramfsaddr is an evironment variable.
   *
   * @param cmdtp command internal data
   * @param flag command flag
   * @param argc number of arguments supplied to the command
   * @param argv arguments list
   * @return 0 on success, 1 otherwise
   */

  int do_cramfs_load(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])

  {
  	char *filename;
  	int size;
  	ulong offset = load_addr;
  
  	struct part_info part;
  	struct mtd_device dev;
  	struct mtdids id;
  
  	ulong addr;
  	addr = simple_strtoul(getenv("cramfsaddr"), NULL, 16);
  
  	/* hack! */
  	/* cramfs_* only supports NOR flash chips */
  	/* fake the device type */
  	id.type = MTD_DEV_TYPE_NOR;
  	id.num = 0;
  	dev.id = &id;
  	part.dev = &dev;
  	/* fake the address offset */

  	part.offset = addr - OFFSET_ADJUSTMENT;

  
  	/* pre-set Boot file name */
  	if ((filename = getenv("bootfile")) == NULL) {
  		filename = "uImage";
  	}
  
  	if (argc == 2) {
  		filename = argv[1];
  	}
  	if (argc == 3) {
  		offset = simple_strtoul(argv[1], NULL, 0);
  		load_addr = offset;
  		filename = argv[2];
  	}
  
  	size = 0;
  	if (cramfs_check(&part))
  		size = cramfs_load ((char *) offset, &part, filename);
  
  	if (size > 0) {

  		printf("### CRAMFS load complete: %d bytes loaded to 0x%lx
  ",
  			size, offset);

  		setenv_hex("filesize", size);

  	} else {
  		printf("### CRAMFS LOAD ERROR<%x> for %s!
  ", size, filename);
  	}
  
  	return !(size > 0);
  }
  
  /**
   * Routine implementing u-boot ls command which lists content of a given
   * directory at location 'cramfsaddr'.
   * cramfsaddr is an evironment variable.
   *
   * @param cmdtp command internal data
   * @param flag command flag
   * @param argc number of arguments supplied to the command
   * @param argv arguments list
   * @return 0 on success, 1 otherwise
   */

  int do_cramfs_ls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])

  {
  	char *filename = "/";
  	int ret;
  	struct part_info part;
  	struct mtd_device dev;
  	struct mtdids id;
  
  	ulong addr;
  	addr = simple_strtoul(getenv("cramfsaddr"), NULL, 16);
  
  	/* hack! */
  	/* cramfs_* only supports NOR flash chips */
  	/* fake the device type */
  	id.type = MTD_DEV_TYPE_NOR;
  	id.num = 0;
  	dev.id = &id;
  	part.dev = &dev;
  	/* fake the address offset */

  	part.offset = addr - OFFSET_ADJUSTMENT;

  
  	if (argc == 2)
  		filename = argv[1];
  
  	ret = 0;
  	if (cramfs_check(&part))
  		ret = cramfs_ls (&part, filename);
  
  	return ret ? 0 : 1;
  }
  
  /* command line only */
  
  /***************************************************/
  U_BOOT_CMD(
  	cramfsload,	3,	0,	do_cramfs_load,

  	"load binary file from a filesystem image",

  	"[ off ] [ filename ]
  "
  	"    - load binary file from address 'cramfsaddr'
  "
  	"      with offset 'off'
  "
  );
  U_BOOT_CMD(
  	cramfsls,	2,	1,	do_cramfs_ls,

  	"list files in a directory (default /)",

  	"[ directory ]
  "
  	"    - list files in a directory.
  "
  );
  
  #endif /* #ifdef CONFIG_CRAMFS_CMDLINE */
  
  /***************************************************/