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/*
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* (C) Copyright 2009
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* Stefano Babic, DENX Software Engineering, sbabic@denx.de.
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*
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* (C) Copyright 2008
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* Marvell Semiconductor <www.marvell.com>
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* Written-by: Prafulla Wadaskar <prafulla@marvell.com>
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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/* Required to obtain the getline prototype from stdio.h */
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#define _GNU_SOURCE
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#include "mkimage.h"
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#include <image.h>
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#include "imximage.h"
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/*
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* Supported commands for configuration file
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*/
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static table_entry_t imximage_cmds[] = {
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{CMD_BOOT_FROM, "BOOT_FROM", "boot comand", },
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{CMD_DATA, "DATA", "Reg Write Data", },
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{-1, "", "", },
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};
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/*
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* Supported Boot options for configuration file
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* this is needed to set the correct flash offset
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*/
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static table_entry_t imximage_bootops[] = {
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{FLASH_OFFSET_SPI, "spi", "SPI Flash", },
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{FLASH_OFFSET_NAND, "nand", "NAND Flash", },
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{FLASH_OFFSET_SD, "sd", "SD Card", },
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{FLASH_OFFSET_ONENAND, "onenand", "OneNAND Flash",},
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{-1, "", "Invalid", },
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};
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static struct imx_header imximage_header;
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static uint32_t get_cfg_value(char *token, char *name, int linenr)
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{
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char *endptr;
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uint32_t value;
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errno = 0;
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value = strtoul(token, &endptr, 16);
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if (errno || (token == endptr)) {
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fprintf(stderr, "Error: %s[%d] - Invalid hex data(%s)\n",
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name, linenr, token);
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exit(EXIT_FAILURE);
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}
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return value;
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}
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static int imximage_check_image_types(uint8_t type)
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{
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if (type == IH_TYPE_IMXIMAGE)
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return EXIT_SUCCESS;
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else
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return EXIT_FAILURE;
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}
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static int imximage_verify_header(unsigned char *ptr, int image_size,
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struct mkimage_params *params)
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{
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struct imx_header *imx_hdr = (struct imx_header *) ptr;
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flash_header_t *hdr = &imx_hdr->fhdr;
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/* Only a few checks can be done: search for magic numbers */
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if (hdr->app_code_barker != APP_CODE_BARKER)
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return -FDT_ERR_BADSTRUCTURE;
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if (imx_hdr->dcd_table.preamble.barker != DCD_BARKER)
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return -FDT_ERR_BADSTRUCTURE;
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return 0;
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}
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static void imximage_print_header(const void *ptr)
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{
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struct imx_header *imx_hdr = (struct imx_header *) ptr;
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flash_header_t *hdr = &imx_hdr->fhdr;
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uint32_t size;
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uint32_t length;
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dcd_t *dcd = &imx_hdr->dcd_table;
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size = imx_hdr->dcd_table.preamble.length;
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if (size > (MAX_HW_CFG_SIZE * sizeof(dcd_type_addr_data_t))) {
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fprintf(stderr,
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"Error: Image corrupt DCD size %d exceed maximum %d\n",
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(uint32_t)(size / sizeof(dcd_type_addr_data_t)),
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MAX_HW_CFG_SIZE);
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exit(EXIT_FAILURE);
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}
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length = dcd->preamble.length / sizeof(dcd_type_addr_data_t);
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printf("Image Type: Freescale IMX Boot Image\n");
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printf("Data Size: ");
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genimg_print_size(dcd->addr_data[length].type);
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printf("Load Address: %08x\n", (unsigned int)hdr->app_dest_ptr);
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printf("Entry Point: %08x\n", (unsigned int)hdr->app_code_jump_vector);
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}
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static uint32_t imximage_parse_cfg_file(struct imx_header *imxhdr, char *name)
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{
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FILE *fd = NULL;
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char *line = NULL;
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char *token, *saveptr1, *saveptr2;
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int lineno = 0;
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int fld, value;
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size_t len;
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int dcd_len = 0;
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dcd_t *dcd = &imxhdr->dcd_table;
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int32_t cmd;
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fd = fopen(name, "r");
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if (fd == 0) {
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fprintf(stderr, "Error: %s - Can't open DCD file\n", name);
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exit(EXIT_FAILURE);
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}
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/* Very simple parsing, line starting with # are comments
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* and are dropped
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*/
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while ((getline(&line, &len, fd)) > 0) {
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lineno++;
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token = strtok_r(line, "\r\n", &saveptr1);
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if (token == NULL)
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continue;
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/* Check inside the single line */
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for (fld = CFG_COMMAND, cmd = CMD_INVALID,
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line = token; ; line = NULL, fld++) {
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token = strtok_r(line, " \t", &saveptr2);
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if (token == NULL)
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break;
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/* Drop all text starting with '#' as comments */
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if (token[0] == '#')
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break;
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/* parse all fields in a single line */
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switch (fld) {
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case CFG_COMMAND:
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cmd = get_table_entry_id(imximage_cmds,
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"imximage commands", token);
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if (cmd < 0) {
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fprintf(stderr,
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"Error: %s[%d] - "
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"Invalid command (%s)\n",
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name, lineno, token);
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exit(EXIT_FAILURE);
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}
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break;
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case CFG_REG_SIZE:
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switch (cmd) {
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case CMD_BOOT_FROM:
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/* Get flash header offset */
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imxhdr->flash_offset =
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get_table_entry_id(
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imximage_bootops,
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"imximage boot option",
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token);
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if (imxhdr->flash_offset == -1) {
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fprintf(stderr,
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"Error: %s[%d] -"
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"Invalid boot device"
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"(%s)\n",
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name, lineno, token);
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exit(EXIT_FAILURE);
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}
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break;
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case CMD_DATA:
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value = get_cfg_value(token,
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name, lineno);
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/* Byte, halfword, word */
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if ((value != 1) &&
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(value != 2) && (value != 4)) {
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fprintf(stderr,
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"Error: %s[%d] - "
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"Invalid register size "
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"(%d)\n",
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name, lineno, value);
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exit(EXIT_FAILURE);
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}
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dcd->addr_data[dcd_len].type = value;
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break;
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}
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case CFG_REG_ADDRESS:
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if (cmd == CMD_DATA)
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dcd->addr_data[dcd_len].addr =
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get_cfg_value(token,
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name, lineno);
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break;
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case CFG_REG_VALUE:
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if (cmd == CMD_DATA) {
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dcd->addr_data[dcd_len].value =
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get_cfg_value(token,
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name, lineno);
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dcd_len++;
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}
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break;
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}
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}
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if (dcd_len > MAX_HW_CFG_SIZE) {
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fprintf(stderr,
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"Error: %s[%d] -"
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"DCD table exceeds maximum size(%d)\n",
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name, lineno, MAX_HW_CFG_SIZE);
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}
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}
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dcd->preamble.barker = DCD_BARKER;
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dcd->preamble.length = dcd_len * sizeof(dcd_type_addr_data_t);
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fclose(fd);
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return dcd_len;
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}
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static void imximage_set_header(void *ptr, struct stat *sbuf, int ifd,
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struct mkimage_params *params)
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{
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struct imx_header *hdr = (struct imx_header *)ptr;
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flash_header_t *fhdr = &hdr->fhdr;
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int dcd_len;
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dcd_t *dcd = &hdr->dcd_table;
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uint32_t base_offset;
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/* Set default offset */
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hdr->flash_offset = FLASH_OFFSET_STANDARD;
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/* Set magic number */
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fhdr->app_code_barker = APP_CODE_BARKER;
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/* Parse dcd configuration file */
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dcd_len = imximage_parse_cfg_file(hdr, params->imagename);
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fhdr->app_dest_ptr = params->addr;
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fhdr->app_dest_ptr = params->ep - hdr->flash_offset -
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sizeof(struct imx_header);
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fhdr->app_code_jump_vector = params->ep;
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base_offset = fhdr->app_dest_ptr + hdr->flash_offset ;
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fhdr->dcd_ptr_ptr = (uint32_t) (offsetof(flash_header_t, dcd_ptr) -
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offsetof(flash_header_t, app_code_jump_vector) +
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base_offset);
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fhdr->dcd_ptr = base_offset +
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offsetof(struct imx_header, dcd_table);
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/* The external flash header must be at the end of the DCD table */
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dcd->addr_data[dcd_len].type = sbuf->st_size +
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hdr->flash_offset +
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sizeof(struct imx_header);
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/* Security feature are not supported */
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fhdr->app_code_csf = 0;
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fhdr->super_root_key = 0;
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}
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int imximage_check_params(struct mkimage_params *params)
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{
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if (!params)
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return CFG_INVALID;
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if (!strlen(params->imagename)) {
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fprintf(stderr, "Error: %s - Configuration file not specified, "
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"it is needed for imximage generation\n",
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params->cmdname);
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return CFG_INVALID;
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}
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/*
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* Check parameters:
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* XIP is not allowed and verify that incompatible
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* parameters are not sent at the same time
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* For example, if list is required a data image must not be provided
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*/
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return (params->dflag && (params->fflag || params->lflag)) ||
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(params->fflag && (params->dflag || params->lflag)) ||
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(params->lflag && (params->dflag || params->fflag)) ||
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(params->xflag) || !(strlen(params->imagename));
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}
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/*
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* imximage parameters
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*/
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static struct image_type_params imximage_params = {
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.name = "Freescale i.MX 51 Boot Image support",
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.header_size = sizeof(struct imx_header),
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.hdr = (void *)&imximage_header,
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.check_image_type = imximage_check_image_types,
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.verify_header = imximage_verify_header,
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.print_header = imximage_print_header,
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.set_header = imximage_set_header,
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.check_params = imximage_check_params,
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};
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void init_imx_image_type(void)
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{
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mkimage_register(&imximage_params);
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}
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