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Diffstat (limited to 'tools/atmel_pmecc_params.c')
| -rw-r--r-- | tools/atmel_pmecc_params.c | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/tools/atmel_pmecc_params.c b/tools/atmel_pmecc_params.c new file mode 100644 index 0000000..8eaf27f --- /dev/null +++ b/tools/atmel_pmecc_params.c @@ -0,0 +1,51 @@ +/* + * (C) Copyright 2014 Andreas Bießmann <andreas.devel@googlemail.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +/* + * This is a host tool for generating an appropriate string out of board + * configuration. The string is required for correct generation of PMECC + * header which in turn is required for NAND flash booting of Atmel AT91 style + * hardware. + * + * See doc/README.atmel_pmecc for more information. + */ + +#include <config.h> +#include <stdlib.h> + +static int pmecc_get_ecc_bytes(int cap, int sector_size) +{ + int m = 12 + sector_size / 512; + return (m * cap + 7) / 8; +} + +int main(int argc, char *argv[]) +{ + unsigned int use_pmecc = 0; + unsigned int sector_per_page; + unsigned int sector_size = CONFIG_PMECC_SECTOR_SIZE; + unsigned int oob_size = CONFIG_SYS_NAND_OOBSIZE; + unsigned int ecc_bits = CONFIG_PMECC_CAP; + unsigned int ecc_offset; + +#ifdef CONFIG_ATMEL_NAND_HW_PMECC + use_pmecc = 1; +#endif + + sector_per_page = CONFIG_SYS_NAND_PAGE_SIZE / CONFIG_PMECC_SECTOR_SIZE; + ecc_offset = oob_size - + pmecc_get_ecc_bytes(ecc_bits, sector_size) * sector_per_page; + + printf("usePmecc=%d,", use_pmecc); + printf("sectorPerPage=%d,", sector_per_page); + printf("sectorSize=%d,", sector_size); + printf("spareSize=%d,", oob_size); + printf("eccBits=%d,", ecc_bits); + printf("eccOffset=%d", ecc_offset); + printf("\n"); + + exit(EXIT_SUCCESS); +} |