LXR uboot/tools/atmel_pmecc

   1// SPDX-License-Identifier: GPL-2.0+
   2/*
   3 * (C) Copyright 2014 Andreas Bießmann <andreas@biessmann.org>
   4 */
   5
   6/*
   7 * This is a host tool for generating an appropriate string out of board
   8 * configuration. The string is required for correct generation of PMECC
   9 * header which in turn is required for NAND flash booting of Atmel AT91 style
  10 * hardware.
  11 *
  12 * See doc/README.atmel_pmecc for more information.
  13 */
  14
  15#include <config.h>
  16#include <stdlib.h>
  17
  18static int pmecc_get_ecc_bytes(int cap, int sector_size)
  19{
  20        int m = 12 + sector_size / 512;
  21        return (m * cap + 7) / 8;
  22}
  23
  24int main(int argc, char *argv[])
  25{
  26        unsigned int use_pmecc = 0;
  27        unsigned int sector_per_page;
  28        unsigned int sector_size = CONFIG_PMECC_SECTOR_SIZE;
  29        unsigned int oob_size = CONFIG_SYS_NAND_OOBSIZE;
  30        unsigned int ecc_bits = CONFIG_PMECC_CAP;
  31        unsigned int ecc_offset;
  32
  33#ifdef CONFIG_ATMEL_NAND_HW_PMECC
  34        use_pmecc = 1;
  35#endif
  36
  37        sector_per_page = CONFIG_SYS_NAND_PAGE_SIZE / CONFIG_PMECC_SECTOR_SIZE;
  38        ecc_offset = oob_size -
  39                pmecc_get_ecc_bytes(ecc_bits, sector_size) * sector_per_page;
  40
  41        printf("usePmecc=%d,", use_pmecc);
  42        printf("sectorPerPage=%d,", sector_per_page);
  43        printf("sectorSize=%d,", sector_size);
  44        printf("spareSize=%d,", oob_size);
  45        printf("eccBits=%d,", ecc_bits);
  46        printf("eccOffset=%d", ecc_offset);
  47        printf("\n");
  48
  49        exit(EXIT_SUCCESS);
  50}
  51