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#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include "config_marvell.h"
#include "soc_spec.h"
#include "bootstrap_def.h"

#ifdef DEBUG
#define DB(x...)	printf(x)
#else
#define DB(x...)
#endif

/* Utility version */
#define VH	1
#define VL	0

#define  BUFSIZE	80

#ifndef ARRAY_SIZE
#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
#endif

typedef struct _boardDef {
	char 	*bdName;
	char 	*memory;
	char 	*sections;
	MV_U32	memLen;

} boardDef;

static boardDef boards[] = {
	{ "gen",
		0,
			"\t. = %#08x;\n"
			"\t.text : { *(.text) }\n"
			"\t.data : { *(.data) }\n"
			"\t.bss : { *(.bss) }\n",
	},
	{ "a375_alp_zx",	/* Used for Zx revision */
		"\tram1 : ORIGIN = %#08x, LENGTH = %#x\n"
		"\tram2 : ORIGIN = 0x40008500, LENGTH = 0x47a0\n"
		"\tram3 : ORIGIN = 0x4000Cca0, LENGTH = 0x3780\n"
		"\tram4 : ORIGIN = 0x40010500, LENGTH = 0x8ac0\n",
			"\t. = %#08x;\n"
			"\t.text1 : {\n"
			"\t\tbin_entry.o (.text)\n"
			"\t\tddr3_hw_training*.o (.text)\n"
			"\t\tddr3_init*.o (.text)\n"
			"\t\tddr3_pbs*.o (.text)\n"
			"\t} > ram1 = 0x0\n\n"
			"\t.text3 : {\n"
			"\t\tmvHighSpeedEnvSpec*.o (.text)\n"
			"\t\tmv*.o (.text)\n"
			"\t} > ram3 = 0x0\n\n"
			"\t.text2 : {\n"
			"\t\t*.o (.text)\n"
			"\t} > ram4 = 0x0\n\n"
			"\t.data : {\n"
			"\t\t*(.data)\n"
			"\t} > ram2 = 0x0\n\n"
			"\t.bss : {\n"
			"\t\t*(.bss)\n"
			"\t} > ram2 = 0x0\n",
		0x8500
	},
	{ "tip_ld_100kb",
		"\tram1 : ORIGIN = %#08x, LENGTH = %#x\n"
		"\tram2 : ORIGIN = 0x40020000, LENGTH = 0x8000\n",
			"\t. = %#08x;\n"
			"\t.text1 : {\n"
			"\t\t*(.text)\n"
			"\t} > ram1 = 0x0\n\n"
			"\t.data : {\n"
			"\t\t*(.data)\n"
			"\t} > ram1 = 0x0\n\n"
			"\t.bss : {\n"
			"\t\t*(.bss)\n"
			"\t} > ram2 = 0x0\n",
		0x19000
	},
	{ "tip_ld_128kb",
		"\tram1 : ORIGIN = %#08x, LENGTH = %#x\n"
		"\tram2 : ORIGIN = 0x40020000, LENGTH = 0x8000\n",
			"\t. = %#08x;\n"
			"\t.text1 : {\n"
			"\t\t*(.text)\n"
			"\t} > ram1 = 0x0\n\n"
			"\t.data : {\n"
			"\t\t*(.data)\n"
			"\t} > ram1 = 0x0\n\n"
			"\t.bss : {\n"
			"\t\t*(.bss)\n"
			"\t} > ram2 = 0x0\n",
		0x20000
	},
};

void printusage(char *name)
{
	printf("Marvell utility for BIN header preparation (parameters and linker script). Version %d.%d:\n", VH, VL);
	printf("%s [options] <parameters output file name> <linker script output file name>\n", name);
	printf("Options:\n");
	printf("-S		Secure mode (secure header is included in the boot image)\n");
	printf("-R <reg file>	REG header is present and produced from \"reg file\" content\n");
	printf("-P <par file>	Text file with BIN header parameters. The text file contains\n");
	printf("		one parametes per line, up to 256 lines total. Each parameter is\n");
	printf("		a hexadecimal number in range of 0 to 2^32.\n");
	printf("-B <board_type>	The target board type. Supported bards: \n");
	printf("-		gen - generic board, used also if the requested board is not known\n");
	printf("-		alp  - Avanta LP.\n");
	printf("-		a375 - Armada 375.\n");
	printf("-		tip_ld_100k - TIP devices family which are limited to 100KB in SRAM.\n");
	printf("-		tip_ld_128k - TIP devices family which are limited to 128KB in SRAM.\n");
	printf("-d yes	Build the bin_hdr.elf using default linker.scr \n");
}

int main(int argc, char **argv)
{

	int		err = -1;
	int		secure = 0;
	char		buf[BUFSIZE];
	unsigned long	args[256] = {0};
	unsigned long	offset, argsnum = 0, reghdr_argsnum = 0;
	unsigned long	memalign;
	FILE		*f_outparm = NULL, *f_outlink = NULL;
	FILE		*f_reg = NULL, *f_param = NULL;
	char		*board_name = NULL;
	char		*temp_board_name = NULL;
	int 		optch; /* command-line option char */
	static char	optstring[] = "SR:P:B:d:";
	int		bIdx;
	int debug_mode_flag = 0;

	offset  = HDR_BLK_OFFSET;

	while ((optch = getopt(argc, argv, optstring)) != -1) {
		switch (optch) {
		case 'S': /* secure mode */
			secure = 1;
			break;

		case 'R': /* Register config file */
			f_reg = fopen(optarg, "r");
			if (f_reg == NULL) {
				printf("Error opening register config. file %s!\n", optarg);
				goto parse_error;
			}
			break;

		case 'P': /* Parameters file */
			f_param = fopen(optarg, "r");
			if (f_param == NULL) {
				printf("Error opening input parameters file %s!\n", optarg);
				goto parse_error;
			}
			break;

		case 'B': /* Board type */
			board_name = optarg;
			break;

		case 'd': /* Debug Mode */
			if(!strcmp(optarg,"yes")){
				debug_mode_flag = 1;
			}
			break;

		default:
			goto parse_error;
		}
	}

	printf("Building linker script for board %s", board_name);
#ifdef CONFIG_ALP_A375_ZX_REV
	board_name = "a375_alp_zx";
	printf("-Zx");
#endif

#if defined(TIP_BUILD_LD_100KB)
	/* build linker script for 100KB size limitation of bin header */
	temp_board_name = "tip_ld_100kb";
#elif defined(TIP_BUILD_LD_128KB)
	/* build linker script for 128KB size limitation of bin header */
	temp_board_name = "tip_ld_128kb";
#else
	/* build linker script for 'legacy' (DDR wise) devices
	   where there are not limitation on the image structure */
	temp_board_name = board_name;
#endif


	printf(", %s mode\n", secure == 1 ? "Secure" : "Non-secure");
	f_outparm = fopen(argv[optind], "w");
	if (f_outparm == NULL) {
		printf("Error opening output parameters file - %s!\n", argv[optind]);
		goto parse_error;
	}

	optind++;
	f_outlink = fopen(argv[optind], "w");
	if (f_outlink == NULL) {
		printf("Error opening output linker script file -- %s!\n", argv[optind]);
		goto parse_error;
	}

	/* Count number of REG header parameters */
	if (f_reg != NULL) {
		while (1) {
			int addr, val;

			if (fscanf(f_reg, "%x %x\n", (unsigned int *)&addr, (unsigned int *)&val) == EOF)
				break;
			else if ((addr == 0x0) && (val == 0x0))
				break;
			else
				reghdr_argsnum++;
		}
	}

	/* Count number of BIN header parameters */
	if (f_param != NULL) {
		while (fgets(buf, BUFSIZE-2, f_param) != NULL) {
			if (strncmp(buf, "0x", 2) != 0)
				continue;

			args[argsnum] = strtoul(buf, 0, 16);
			argsnum++;
		}
	}
	DB("Supplied %ld parameters in TXT file\n", argsnum);

	/* main and secure headers */
	offset += sizeof(BHR_t) + secure * sizeof(secExtBHR_t);
	/* register header */
	if (reghdr_argsnum != 0) {
		offset += EXT_HDR_BASE_SIZE + reghdr_argsnum * 8;
		DB("The REG configuration consists %ld (ADDR,VAL) pairs\n", reghdr_argsnum);
	}
	/* binary header - one additional word is for number of arguments field */
	offset += sizeof(headExtBHR_t) + 4 + argsnum * 4;
	DB("Offset before alignment is %#08lx \n", offset + RAM_TOP);

	/* The start address of executable code should be aligned to 128bit boundary using dumb arguments
	   Otherwise the linker will silently align it and the execution will start at the wrong place */
	memalign = offset & 0xF;
	if (memalign != 0) {
		argsnum += (0x10 - memalign) / 4;
		offset = (offset & 0xFFFFFFF0UL) + 0x10;
		DB("Code section aligned with %ld empty parameters added to BIN header\n", (0x10 - memalign) / 4);
	} else
		DB("No alignment is needed\n");

	/* Number of arguments field always presents in BIN header */
	fwrite(&argsnum, 4, 1, f_outparm);
	if (argsnum != 0)
		fwrite(args, 4, argsnum, f_outparm);

	/* Seek for the board in parameters array */
	for (bIdx = 0; bIdx < ARRAY_SIZE(boards); bIdx++) {
		if(debug_mode_flag == 1)
			break; /*Use generic linker.scr anyway*/
		if ((strcmp(boards[bIdx].bdName, temp_board_name) == 0) ||
		     /* alp should use the same parameters as a375 */
		    ((strcmp(boards[bIdx].bdName, "a375") == 0) && (strcmp(temp_board_name, "alp") == 0)))
			break;
	}
	/* Select generic linker script for unknown board */
	if (bIdx == ARRAY_SIZE(boards)) {
		DB("Board %s was not found in database, using generic script\n", board_name);
		bIdx = 0;
	}

	fprintf(f_outlink, "OUTPUT_FORMAT(\"elf32-littlearm\", \"elf32-bigarm\", \"elf32-littlearm\")\n");
	fprintf(f_outlink, "OUTPUT_ARCH(arm)\n\n");
	if (boards[bIdx].memory != 0) {
		fprintf(f_outlink, "MEMORY\n{\n");
		fprintf(f_outlink, boards[bIdx].memory, offset + RAM_TOP, boards[bIdx].memLen - offset);
		fprintf(f_outlink, "}\n");
	}
	fprintf(f_outlink, "SECTIONS\n{\n");
	fprintf(f_outlink, boards[bIdx].sections, offset + RAM_TOP);
	fprintf(f_outlink, "}\n");

	err = 0;

parse_error:
	if (f_reg)
		fclose(f_reg);
	if (f_param)
		fclose(f_param);
	if (f_outparm)
		fclose(f_outparm);
	if (f_outlink)
		fclose(f_outlink);
	if (err != 0)
		printusage(argv[0]);

	return err;
}