52 lines
1.3 KiB
C
52 lines
1.3 KiB
C
/*
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* (C) Copyright 2014 Andreas Bießmann <andreas.devel@googlemail.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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/*
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* This is a host tool for generating an appropriate string out of board
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* configuration. The string is required for correct generation of PMECC
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* header which in turn is required for NAND flash booting of Atmel AT91 style
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* hardware.
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*
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* See doc/README.atmel_pmecc for more information.
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*/
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#include <config.h>
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#include <stdlib.h>
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static int pmecc_get_ecc_bytes(int cap, int sector_size)
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{
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int m = 12 + sector_size / 512;
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return (m * cap + 7) / 8;
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}
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int main(int argc, char *argv[])
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{
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unsigned int use_pmecc = 0;
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unsigned int sector_per_page;
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unsigned int sector_size = CONFIG_PMECC_SECTOR_SIZE;
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unsigned int oob_size = CONFIG_SYS_NAND_OOBSIZE;
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unsigned int ecc_bits = CONFIG_PMECC_CAP;
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unsigned int ecc_offset;
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#ifdef CONFIG_ATMEL_NAND_HW_PMECC
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use_pmecc = 1;
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#endif
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sector_per_page = CONFIG_SYS_NAND_PAGE_SIZE / CONFIG_PMECC_SECTOR_SIZE;
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ecc_offset = oob_size -
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pmecc_get_ecc_bytes(ecc_bits, sector_size) * sector_per_page;
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printf("usePmecc=%d,", use_pmecc);
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printf("sectorPerPage=%d,", sector_per_page);
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printf("sectorSize=%d,", sector_size);
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printf("spareSize=%d,", oob_size);
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printf("eccBits=%d,", ecc_bits);
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printf("eccOffset=%d", ecc_offset);
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printf("\n");
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exit(EXIT_SUCCESS);
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}
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