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// SPDX-License-Identifier: GPL-2.0+
/*
* Image manipulator for LPC32XX SoCs
*
* (C) Copyright 2015 DENX Software Engineering GmbH
* Written-by: Albert ARIBAUD <albert.aribaud@3adev.fr>
*
* Derived from omapimage.c:
*
* (C) Copyright 2010
* Linaro LTD, www.linaro.org
* Author: John Rigby <john.rigby@linaro.org>
* Based on TI's signGP.c
*
* (C) Copyright 2009
* Stefano Babic, DENX Software Engineering, sbabic@denx.de.
*
* (C) Copyright 2008
* Marvell Semiconductor <www.marvell.com>
* Written-by: Prafulla Wadaskar <prafulla@marvell.com>
*/
#include "imagetool.h"
#include <compiler.h>
#include <image.h>
/*
* NAND page 0 boot header
*/
struct nand_page_0_boot_header {
uint32_t data[129];
uint32_t pad[383];
};
/*
* Default ICC (interface configuration data [sic]) if none specified
* in board config
*/
#ifndef LPC32XX_BOOT_ICR
#define LPC32XX_BOOT_ICR 0x00000096
#endif
/*
* Default boot NAND page size if none specified in board config
*/
#ifndef LPC32XX_BOOT_NAND_PAGESIZE
#define LPC32XX_BOOT_NAND_PAGESIZE 2048
#endif
/*
* Default boot NAND pages per sector if none specified in board config
*/
#ifndef LPC32XX_BOOT_NAND_PAGES_PER_SECTOR
#define LPC32XX_BOOT_NAND_PAGES_PER_SECTOR 64
#endif
/*
* Maximum size for boot code is 56K unless defined in board config
*/
#ifndef LPC32XX_BOOT_CODESIZE
#define LPC32XX_BOOT_CODESIZE (56*1024)
#endif
/* signature byte for a readable block */
#define LPC32XX_BOOT_BLOCK_OK 0xaa
static struct nand_page_0_boot_header lpc32xximage_header;
static int lpc32xximage_check_image_types(uint8_t type)
{
if (type == IH_TYPE_LPC32XXIMAGE)
return EXIT_SUCCESS;
return EXIT_FAILURE;
}
static int lpc32xximage_verify_header(unsigned char *ptr, int image_size,
struct image_tool_params *params)
{
struct nand_page_0_boot_header *hdr =
(struct nand_page_0_boot_header *)ptr;
/* turn image size from bytes to NAND pages, page 0 included */
int image_size_in_pages = ((image_size - 1)
/ LPC32XX_BOOT_NAND_PAGESIZE);
if (hdr->data[0] != (0xff & LPC32XX_BOOT_ICR))
return -1;
if (hdr->data[1] != (0xff & ~LPC32XX_BOOT_ICR))
return -1;
if (hdr->data[2] != (0xff & LPC32XX_BOOT_ICR))
return -1;
if (hdr->data[3] != (0xff & ~LPC32XX_BOOT_ICR))
return -1;
if (hdr->data[4] != (0xff & image_size_in_pages))
return -1;
if (hdr->data[5] != (0xff & ~image_size_in_pages))
return -1;
if (hdr->data[6] != (0xff & image_size_in_pages))
return -1;
if (hdr->data[7] != (0xff & ~image_size_in_pages))
return -1;
if (hdr->data[8] != (0xff & image_size_in_pages))
return -1;
if (hdr->data[9] != (0xff & ~image_size_in_pages))
return -1;
if (hdr->data[10] != (0xff & image_size_in_pages))
return -1;
if (hdr->data[11] != (0xff & ~image_size_in_pages))
return -1;
if (hdr->data[12] != LPC32XX_BOOT_BLOCK_OK)
return -1;
if (hdr->data[128] != LPC32XX_BOOT_BLOCK_OK)
return -1;
return 0;
}
static void print_hdr_byte(struct nand_page_0_boot_header *hdr, int ofs)
{
printf("header[%d] = %02x\n", ofs, hdr->data[ofs]);
}
static void lpc32xximage_print_header(const void *ptr)
{
struct nand_page_0_boot_header *hdr =
(struct nand_page_0_boot_header *)ptr;
int ofs;
for (ofs = 0; ofs <= 12; ofs++)
print_hdr_byte(hdr, ofs);
print_hdr_byte(hdr, 128);
}
static void lpc32xximage_set_header(void *ptr, struct stat *sbuf, int ifd,
struct image_tool_params *params)
{
struct nand_page_0_boot_header *hdr =
(struct nand_page_0_boot_header *)ptr;
/* turn image size from bytes to NAND pages, page 0 included */
int image_size_in_pages = ((sbuf->st_size
+ LPC32XX_BOOT_NAND_PAGESIZE - 1)
/ LPC32XX_BOOT_NAND_PAGESIZE);
/* fill header -- default byte value is 0x00, not 0xFF */
memset((void *)hdr, 0, sizeof(*hdr));
hdr->data[0] = (hdr->data[2] = 0xff & LPC32XX_BOOT_ICR);
hdr->data[1] = (hdr->data[3] = 0xff & ~LPC32XX_BOOT_ICR);
hdr->data[4] = (hdr->data[6] = (hdr->data[8]
= (hdr->data[10] = 0xff & image_size_in_pages)));
hdr->data[5] = (hdr->data[7] = (hdr->data[9]
= (hdr->data[11] = 0xff & ~image_size_in_pages)));
hdr->data[12] = (hdr->data[128] = LPC32XX_BOOT_BLOCK_OK);
}
/*
* lpc32xximage parameters
*/
U_BOOT_IMAGE_TYPE(
lpc32xximage,
"LPC32XX Boot Image",
sizeof(lpc32xximage_header),
(void *)&lpc32xximage_header,
NULL,
lpc32xximage_verify_header,
lpc32xximage_print_header,
lpc32xximage_set_header,
NULL,
lpc32xximage_check_image_types,
NULL,
NULL
);
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