LXR uboot/tools/lpc32xximage.c

   1/*
   2 * Image manipulator for LPC32XX SoCs
   3 *
   4 * (C) Copyright 2015  DENX Software Engineering GmbH
   5 * Written-by: Albert ARIBAUD <albert.aribaud@3adev.fr>
   6 *
   7 * Derived from omapimage.c:
   8 *
   9 * (C) Copyright 2010
  10 * Linaro LTD, www.linaro.org
  11 * Author: John Rigby <john.rigby@linaro.org>
  12 * Based on TI's signGP.c
  13 *
  14 * (C) Copyright 2009
  15 * Stefano Babic, DENX Software Engineering, sbabic@denx.de.
  16 *
  17 * (C) Copyright 2008
  18 * Marvell Semiconductor <www.marvell.com>
  19 * Written-by: Prafulla Wadaskar <prafulla@marvell.com>
  20 *
  21 * SPDX-License-Identifier:     GPL-2.0+
  22 */
  23
  24#include "imagetool.h"
  25#include <compiler.h>
  26#include <image.h>
  27
  28/*
  29 * NAND page 0 boot header
  30 */
  31
  32struct nand_page_0_boot_header {
  33        uint32_t data[129];
  34        uint32_t pad[383];
  35};
  36
  37/*
  38 * Default ICC (interface configuration data [sic]) if none specified
  39 * in board config
  40 */
  41
  42#ifndef LPC32XX_BOOT_ICR
  43#define LPC32XX_BOOT_ICR 0x00000096
  44#endif
  45
  46/*
  47 * Default boot NAND page size if none specified in board config
  48 */
  49
  50#ifndef LPC32XX_BOOT_NAND_PAGESIZE
  51#define LPC32XX_BOOT_NAND_PAGESIZE 2048
  52#endif
  53
  54/*
  55 * Default boot NAND pages per sector if none specified in board config
  56 */
  57
  58#ifndef LPC32XX_BOOT_NAND_PAGES_PER_SECTOR
  59#define LPC32XX_BOOT_NAND_PAGES_PER_SECTOR 64
  60#endif
  61
  62/*
  63 * Maximum size for boot code is 56K unless defined in board config
  64 */
  65
  66#ifndef LPC32XX_BOOT_CODESIZE
  67#define LPC32XX_BOOT_CODESIZE (56*1024)
  68#endif
  69
  70/* signature byte for a readable block */
  71
  72#define LPC32XX_BOOT_BLOCK_OK 0xaa
  73
  74static struct nand_page_0_boot_header lpc32xximage_header;
  75
  76static int lpc32xximage_check_image_types(uint8_t type)
  77{
  78        if (type == IH_TYPE_LPC32XXIMAGE)
  79                return EXIT_SUCCESS;
  80        return EXIT_FAILURE;
  81}
  82
  83static int lpc32xximage_verify_header(unsigned char *ptr, int image_size,
  84                        struct image_tool_params *params)
  85{
  86        struct nand_page_0_boot_header *hdr =
  87                (struct nand_page_0_boot_header *)ptr;
  88
  89        /* turn image size from bytes to NAND pages, page 0 included */
  90        int image_size_in_pages = ((image_size - 1)
  91                                  / LPC32XX_BOOT_NAND_PAGESIZE);
  92
  93        if (hdr->data[0] != (0xff & LPC32XX_BOOT_ICR))
  94                return -1;
  95        if (hdr->data[1] != (0xff & ~LPC32XX_BOOT_ICR))
  96                return -1;
  97        if (hdr->data[2] != (0xff & LPC32XX_BOOT_ICR))
  98                return -1;
  99        if (hdr->data[3] != (0xff & ~LPC32XX_BOOT_ICR))
 100                return -1;
 101        if (hdr->data[4] != (0xff & image_size_in_pages))
 102                return -1;
 103        if (hdr->data[5] != (0xff & ~image_size_in_pages))
 104                return -1;
 105        if (hdr->data[6] != (0xff & image_size_in_pages))
 106                return -1;
 107        if (hdr->data[7] != (0xff & ~image_size_in_pages))
 108                return -1;
 109        if (hdr->data[8] != (0xff & image_size_in_pages))
 110                return -1;
 111        if (hdr->data[9] != (0xff & ~image_size_in_pages))
 112                return -1;
 113        if (hdr->data[10] != (0xff & image_size_in_pages))
 114                return -1;
 115        if (hdr->data[11] != (0xff & ~image_size_in_pages))
 116                return -1;
 117        if (hdr->data[12] != LPC32XX_BOOT_BLOCK_OK)
 118                return -1;
 119        if (hdr->data[128] != LPC32XX_BOOT_BLOCK_OK)
 120                return -1;
 121        return 0;
 122}
 123
 124static void print_hdr_byte(struct nand_page_0_boot_header *hdr, int ofs)
 125{
 126        printf("header[%d] = %02x\n", ofs, hdr->data[ofs]);
 127}
 128
 129static void lpc32xximage_print_header(const void *ptr)
 130{
 131        struct nand_page_0_boot_header *hdr =
 132                (struct nand_page_0_boot_header *)ptr;
 133        int ofs;
 134
 135        for (ofs = 0; ofs <= 12; ofs++)
 136                print_hdr_byte(hdr, ofs);
 137        print_hdr_byte(hdr, 128);
 138}
 139
 140static void lpc32xximage_set_header(void *ptr, struct stat *sbuf, int ifd,
 141                                struct image_tool_params *params)
 142{
 143        struct nand_page_0_boot_header *hdr =
 144                (struct nand_page_0_boot_header *)ptr;
 145
 146        /* turn image size from bytes to NAND pages, page 0 included */
 147        int image_size_in_pages = ((sbuf->st_size
 148                                  + LPC32XX_BOOT_NAND_PAGESIZE - 1)
 149                                  / LPC32XX_BOOT_NAND_PAGESIZE);
 150
 151        /* fill header -- default byte value is 0x00, not 0xFF */
 152        memset((void *)hdr, 0, sizeof(*hdr));
 153        hdr->data[0] = (hdr->data[2] = 0xff & LPC32XX_BOOT_ICR);
 154        hdr->data[1] = (hdr->data[3] = 0xff & ~LPC32XX_BOOT_ICR);
 155        hdr->data[4] = (hdr->data[6] = (hdr->data[8]
 156                       = (hdr->data[10] = 0xff & image_size_in_pages)));
 157        hdr->data[5] = (hdr->data[7] = (hdr->data[9]
 158                       = (hdr->data[11] = 0xff & ~image_size_in_pages)));
 159        hdr->data[12] = (hdr->data[128] = LPC32XX_BOOT_BLOCK_OK);
 160}
 161
 162/*
 163 * lpc32xximage parameters
 164 */
 165U_BOOT_IMAGE_TYPE(
 166        lpc32xximage,
 167        "LPC32XX Boot Image",
 168        sizeof(lpc32xximage_header),
 169        (void *)&lpc32xximage_header,
 170        NULL,
 171        lpc32xximage_verify_header,
 172        lpc32xximage_print_header,
 173        lpc32xximage_set_header,
 174        NULL,
 175        lpc32xximage_check_image_types,
 176        NULL,
 177        NULL
 178);
 179