Andreas Bießmann | 68a30be | 2014-05-19 14:23:40 +0200 | [diff] [blame] | 1 | /* |
| 2 | * (C) Copyright 2014 Andreas Bießmann <andreas.devel@googlemail.com> |
| 3 | * |
| 4 | * SPDX-License-Identifier: GPL-2.0+ |
| 5 | */ |
| 6 | |
| 7 | /* |
| 8 | * This is a host tool for generating an appropriate string out of board |
| 9 | * configuration. The string is required for correct generation of PMECC |
| 10 | * header which in turn is required for NAND flash booting of Atmel AT91 style |
| 11 | * hardware. |
| 12 | * |
| 13 | * See doc/README.atmel_pmecc for more information. |
| 14 | */ |
| 15 | |
| 16 | #include <config.h> |
| 17 | #include <stdlib.h> |
| 18 | |
| 19 | static int pmecc_get_ecc_bytes(int cap, int sector_size) |
| 20 | { |
| 21 | int m = 12 + sector_size / 512; |
| 22 | return (m * cap + 7) / 8; |
| 23 | } |
| 24 | |
| 25 | int main(int argc, char *argv[]) |
| 26 | { |
| 27 | unsigned int use_pmecc = 0; |
| 28 | unsigned int sector_per_page; |
| 29 | unsigned int sector_size = CONFIG_PMECC_SECTOR_SIZE; |
| 30 | unsigned int oob_size = CONFIG_SYS_NAND_OOBSIZE; |
| 31 | unsigned int ecc_bits = CONFIG_PMECC_CAP; |
| 32 | unsigned int ecc_offset; |
| 33 | |
| 34 | #ifdef CONFIG_ATMEL_NAND_HW_PMECC |
| 35 | use_pmecc = 1; |
| 36 | #endif |
| 37 | |
| 38 | sector_per_page = CONFIG_SYS_NAND_PAGE_SIZE / CONFIG_PMECC_SECTOR_SIZE; |
| 39 | ecc_offset = oob_size - |
| 40 | pmecc_get_ecc_bytes(ecc_bits, sector_size) * sector_per_page; |
| 41 | |
| 42 | printf("usePmecc=%d,", use_pmecc); |
| 43 | printf("sectorPerPage=%d,", sector_per_page); |
| 44 | printf("sectorSize=%d,", sector_size); |
| 45 | printf("spareSize=%d,", oob_size); |
| 46 | printf("eccBits=%d,", ecc_bits); |
| 47 | printf("eccOffset=%d", ecc_offset); |
| 48 | printf("\n"); |
| 49 | |
| 50 | exit(EXIT_SUCCESS); |
| 51 | } |