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*******************************************************************************/
#include <common.h>
#include <command.h>
#include <net.h>
#include <usb.h>
#include <mmc.h>
#include <ide.h>
#if defined(CONFIG_CMD_STAGE_BOOT)

#ifdef CONFIG_SYS_HUSH_PARSER
#include <hush.h>
#endif

#define LOAD_ADDR getenv("script_addr_r")
#define SCRIPT_PATH getenv("ide_path")
#define INTERFACE_HD "ide"
#define INTERFACE_MMC "mmc"
#define INTERFACE_USB "usb"
#define FLAG_EXIT_FROM_LOOP 1
#define FLAG_PARSE_SEMICOLON (1 << 1)	  /* symbol ';' is special for parser */
#define DEFAULT_DEVICE_NUMBER 0
#define DEFAULT_PART_NUMBER 1
#define MAX_MMC_DEV 1
	
char enviroment[10][22];

extern int marvell_recursive_parse;
extern int parse_string_outer(const char *s, int flag);
extern int do_pxe_boot(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
extern int do_pxe_get(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
extern int do_dhcp (cmd_tbl_t *cmdtp, 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_mmcops(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 void * malloc(__kernel_size_t);
extern int free(void *);
void save_env (void);
void restore_env(void);

int do_stage_boot(cmd_tbl_t * cmdtb, int flag, int argc, char * const argv[])
{
	char *path_to_image, *path_to_scr, *path_to_initrd;
        ulong addr;
	int j,i=1,step=0,device,initrd=0,devnum,partnum,dev_count,max_dev_count;
	char * kernel_addr, *bootargs;
	char dev_part[6], *dev_part_ptr;
        char * args_to_func[5];
	char boot_source_device[8];
	block_dev_desc_t * dev_desc;

	if(argc < 2){
		printf("No args, try help stage_boot\n");
		return 0;
	}
	path_to_initrd = (char *)malloc((strlen(SCRIPT_PATH)+strlen(getenv("initrd_name"))+1)*sizeof(char));
	strcpy(path_to_initrd,SCRIPT_PATH);
	strcat(path_to_initrd,getenv("initrd_name"));
	path_to_image = (char *)malloc((strlen(SCRIPT_PATH)+strlen(getenv("image_name"))+1)*sizeof(char));
	strcpy(path_to_image,SCRIPT_PATH);
	strcat(path_to_image,getenv("image_name"));
	path_to_scr = (char *)malloc((strlen(SCRIPT_PATH)+strlen(getenv("script_name"))+1)*sizeof(char));
	strcpy(path_to_scr,SCRIPT_PATH);
	strcat(path_to_scr,getenv("script_name"));

	kernel_addr = getenv("kernel_addr_r");

	/* initialize interfaces */
	ide_init();
	args_to_func[0]="usb";
	args_to_func[1]="start";
	do_usb(cmdtb, 1, 2, args_to_func);
	args_to_func[0]="mmc";
	args_to_func[1]="rescan";
	do_mmcops(cmdtb, 1, 2, args_to_func);

	/* get device and partition number from 'device_partition' variable */
	dev_part_ptr = getenv("device_partition");
	if (dev_part_ptr == NULL)
	{
		devnum = DEFAULT_DEVICE_NUMBER;
		printf("'device_partition' variable not set"
		    ", using default device number "
		    "%d\n", devnum);
		partnum = DEFAULT_PART_NUMBER;
		printf("'device_partition' variable not set"
		    ", using default partition number "
		    "%d\n", partnum);
	}
	else
	{
		devnum = simple_strtoul(dev_part_ptr, NULL, 0);
		dev_part_ptr = strchr(dev_part_ptr, ':');
		if (dev_part_ptr == NULL)
		{
			devnum = DEFAULT_DEVICE_NUMBER;
			printf("'device_partition' variable set "
			    "incorrectly, using default device number "
			    "%d\n", devnum);
		}
		dev_part_ptr++;
		partnum = simple_strtoul(dev_part_ptr, NULL, 0);
		if (partnum == 0)
		{
			partnum = DEFAULT_PART_NUMBER;
			printf("'device_partition' variable set "
			    "incorrectly, using default partition number "
			    "%d\n", partnum);
		}
	}

	for(device=1;device<argc;device++)
	{
		/* step 1 load script from storage device */
		if( i == 1 && (strcmp(argv[device],"hd_scr")==0 ||
		    strcmp(argv[device],"mmc_scr")==0 ||
		    strcmp(argv[device],"usb_scr")==0))
		{
			step=1;
			dev_count=0;
			args_to_func[0]="ext2load";
			args_to_func[3]=LOAD_ADDR;
			args_to_func[4]=path_to_scr;
			if (strcmp(argv[device],"hd_scr") == 0)
			{
				args_to_func[1] = INTERFACE_HD;
				max_dev_count = CONFIG_SYS_IDE_MAXDEVICE;
			}
			else if (strcmp(argv[device],"mmc_scr") == 0)
			{
				args_to_func[1] = INTERFACE_MMC;
				max_dev_count = MAX_MMC_DEV;
			}
			else
			{
				args_to_func[1] = INTERFACE_USB;
				max_dev_count = USB_MAX_STOR_DEV;
			}
			printf("\nscanning %s devices beginning from: %d:%d\n",
			    args_to_func[1], devnum, partnum);
			for ( j = devnum; i==1 && j < max_dev_count; j++ )
			{
				dev_desc = get_dev(args_to_func[1], j);
				if ((dev_desc == NULL) || (dev_desc->type==DEV_TYPE_UNKNOWN))
					continue;
				dev_count++;
				sprintf(dev_part, "%d:%d", j, partnum);
				args_to_func[2] = dev_part;
				printf("\ntry to load script from %s %s\n",
				    args_to_func[1], args_to_func[2]);
				i = do_ext2load(cmdtb, 1, 5 , args_to_func);
			}
			if (dev_count == 0)
				printf("No %s devices found\n", args_to_func[1]);
			addr = simple_strtoul(args_to_func[3], NULL, 16);
		}
		/* finish step 1 */
		/* step 2 boot PXE */
		if (i== 1 && strcmp(argv[device],"pxe") == 0)
		{
			step = 2;
			save_env();
			setenv("boot_from_pxe","1");
			setenv("autoload","no");
			setenv("pxefile_addr_r",LOAD_ADDR);
			args_to_func[0]="dhcp";
			args_to_func[1]=getenv("pxefile_addr_r");
			i = do_dhcp(cmdtb, 1, 1, args_to_func);
			if(i==0)
				i = do_pxe_get(cmdtb, 1 , 1, args_to_func);
			setenv("boot_from_pxe","0");
			if(i==1)
				restore_env();
		}
		/* finish step 2 */
		/* step 3 load linux image from storage device */
		if( i == 1 && (strcmp(argv[device],"hd_img")==0 ||
		    strcmp(argv[device],"mmc_img")==0 ||
		    strcmp(argv[device],"usb_img")==0))
		{
			step = 3;
			dev_count=0;
			args_to_func[0]="ext2load";
			args_to_func[3]=getenv("kernel_addr_r");
			args_to_func[4]=path_to_image;
			if (strcmp(argv[device],"hd_img") == 0)
			{
				args_to_func[1] = INTERFACE_HD;
				max_dev_count = CONFIG_SYS_IDE_MAXDEVICE;
			}
			else if (strcmp(argv[device],"mmc_img") == 0)
			{
				args_to_func[1] = INTERFACE_MMC;
				max_dev_count = MAX_MMC_DEV;
			}
			else
			{
				args_to_func[1] = INTERFACE_USB;
				max_dev_count = USB_MAX_STOR_DEV;
			}
			printf("\nscanning %s devices beginning from: %d:%d\n",
			    args_to_func[1], devnum, partnum);
			for ( j = devnum; i==1 && j < max_dev_count; j++ )
			{
				dev_desc = get_dev(args_to_func[1], j);
				if ((dev_desc == NULL) || (dev_desc->type==DEV_TYPE_UNKNOWN))
					continue;
				dev_count++;
				sprintf(dev_part, "%d:%d", j, partnum);
				args_to_func[2] = dev_part;
				printf("\ntry to load image from %s %s\n",
				    args_to_func[1], args_to_func[2]);
				i = do_ext2load(cmdtb, 1, 5 , args_to_func);
			}
			if (dev_count == 0)
				printf("No %s devices found\n", args_to_func[1]);
			addr = simple_strtoul(args_to_func[3], NULL, 16);
			if( i==0 ){
				int temp;
				args_to_func[3]=getenv("ramdisk_addr_r");
				args_to_func[4]=path_to_initrd;
				temp = do_ext2load(cmdtb, 1, 5 , args_to_func);
				if(temp == 0)
				{
					initrd = 1;
					args_to_func[1] = getenv("kernel_addr_r");
					args_to_func[2] = getenv("ramdisk_addr_r");
				}
			}
		}
		/* finish step 3 */
		/*step 4 load script from tftp */
		if( i == 1 && strcmp(argv[device],"net_scr")==0 )
		{
			printf("\ntry to load script from tftp\n");
			step = 4;
			args_to_func[0]="tftp";
			args_to_func[1]=LOAD_ADDR;
			args_to_func[2]=getenv("script_name");
		        i = do_tftpb(cmdtb, 1, 3,args_to_func);
			addr = simple_strtoul(args_to_func[1], NULL, 16);
		}
		/* finish step 4 */
		/*step 5 load linux image from tftp */
		if( i == 1 && strcmp(argv[device],"net_img")==0  )
		{
			printf("\ntry to load image from tftp\n");
			step = 5;
			args_to_func[0]="tftp";
			args_to_func[1]=getenv("kernel_addr_r");
			args_to_func[2]=getenv("image_name");
		        i = do_tftpb(cmdtb, 1, 3,args_to_func);
			addr = simple_strtoul(args_to_func[1], NULL, 16);
		}
		/* finish step 5 */
	}
	free(path_to_image);
	free(path_to_scr);
	free(path_to_initrd);
	path_to_image = getenv("bootargs_dflt");
	if(!path_to_image) {
		printf("missing environment variable: bootargs_dflt\n");
		return 0;
	}
	if (step == 3 && initrd ==1){
		setenv("bootargs_dflt","console=ttyS0,115200 earlyprintk=ttyS0 root=/dev/sda2 ro pm_disable");
	}
	bootargs = (char *)malloc(sizeof(char)*(strlen(getenv("bootargs_dflt"))+17));
	strcpy(bootargs,"setenv bootargs ");
	#ifndef CONFIG_SYS_HUSH_PARSER
		if (run_command(strcat(bootargs,getenv("bootargs_dflt")), flag) < 0) {
			printf("missing environment variable: bootargs_dflt\n");
			return 0;
		}
	#else
		marvell_recursive_parse = 1;
		if (parse_string_outer(strcat(bootargs,getenv("bootargs_dflt")),
			FLAG_PARSE_SEMICOLON | FLAG_EXIT_FROM_LOOP) != 0){
		printf("missing environment variable: bootargs_dflt\n");
		marvell_recursive_parse = 0;
		return 0;
		}
		marvell_recursive_parse = 0;
	#endif		
	if(i==0)
	{	
		if (step == 1)
		{
			sprintf(boot_source_device, "%s %s", args_to_func[1], args_to_func[2]);
			setenv("boot_source_device", boot_source_device);
			source(addr,NULL);
		}
		else if (step == 4)
			source(addr,NULL);
		else if ((step == 3 && initrd ==0 )|| step == 5)
			do_bootm(cmdtb, 1,1,(char * const*)kernel_addr);
		else if (step ==2)
			do_pxe_boot(cmdtb, 2, 1,(char * const *)NULL);
		else if (step == 3 && initrd ==1){
			do_bootm(cmdtb, 1,2,args_to_func);				
		}
			
	}	        
	else {
		printf("Unable to load image/script\n");
	}
        return 1;


}
U_BOOT_CMD(stage_boot, 10, 1,do_stage_boot, "command to load script/image from different devices\n\
	example: stage_boot hd_img pxe",
	"Usage:\n \
	 stage_boot hd_img - load and boot image from system installed on ide.\n \
	 stage_boot hd_scr - load and run script from system installed on ide.\n \
	 stage_boot pxe - boot from network (PXE-boot).\n \
	 stage_boot net_img - load and boot image from tftp server.\n \
	 stage_boot net_scr - load and run script from tftp server.\n \
	 stage_boot usb_img - load and boot image from system installed on usb.\n \
	 stage_boot usb_scr - load and run script from system installed on usb.\n \
	 stage_boot mmc_img - load and boot image from system installed on mmc.\n \
	 stage_boot mmc_scr - load and run script from system installed on mmc.\n \
");

void save_env (void)
{
	strcpy(enviroment[0],getenv("serverip"));
	strcpy(enviroment[1],getenv("ipaddr"));
	strcpy(enviroment[2],getenv("netmask"));
	strcpy(enviroment[3],getenv("rootpath"));
}

void restore_env(void)
{
	strcpy(getenv("serverip"),enviroment[0]);
	strcpy(getenv("ipaddr"),enviroment[1]);
	strcpy(getenv("netmask"),enviroment[2]);
	strcpy(getenv("rootpath"),enviroment[3]);
}


#endif