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Diffstat (limited to 'tools/mxsboot.c')
| -rw-r--r-- | tools/mxsboot.c | 684 |
1 files changed, 684 insertions, 0 deletions
diff --git a/tools/mxsboot.c b/tools/mxsboot.c new file mode 100644 index 0000000..176753d --- /dev/null +++ b/tools/mxsboot.c @@ -0,0 +1,684 @@ +/* + * Freescale i.MX28 image generator + * + * Copyright (C) 2011 Marek Vasut <marek.vasut@gmail.com> + * on behalf of DENX Software Engineering GmbH + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <fcntl.h> +#include <sys/stat.h> +#include <sys/types.h> +#include <unistd.h> + +#include "compiler.h" + +/* + * Default BCB layout. + * + * TWEAK this if you have blown any OCOTP fuses. + */ +#define STRIDE_PAGES 64 +#define STRIDE_COUNT 4 + +/* + * Layout for 256Mb big NAND with 2048b page size, 64b OOB size and + * 128kb erase size. + * + * TWEAK this if you have different kind of NAND chip. + */ +uint32_t nand_writesize = 2048; +uint32_t nand_oobsize = 64; +uint32_t nand_erasesize = 128 * 1024; + +/* + * Sector on which the SigmaTel boot partition (0x53) starts. + */ +uint32_t sd_sector = 2048; + +/* + * Each of the U-Boot bootstreams is at maximum 1MB big. + * + * TWEAK this if, for some wild reason, you need to boot bigger image. + */ +#define MAX_BOOTSTREAM_SIZE (1 * 1024 * 1024) + +/* i.MX28 NAND controller-specific constants. DO NOT TWEAK! */ +#define MXS_NAND_DMA_DESCRIPTOR_COUNT 4 +#define MXS_NAND_CHUNK_DATA_CHUNK_SIZE 512 +#define MXS_NAND_METADATA_SIZE 10 +#define MXS_NAND_COMMAND_BUFFER_SIZE 32 + +struct mx28_nand_fcb { + uint32_t checksum; + uint32_t fingerprint; + uint32_t version; + struct { + uint8_t data_setup; + uint8_t data_hold; + uint8_t address_setup; + uint8_t dsample_time; + uint8_t nand_timing_state; + uint8_t rea; + uint8_t rloh; + uint8_t rhoh; + } timing; + uint32_t page_data_size; + uint32_t total_page_size; + uint32_t sectors_per_block; + uint32_t number_of_nands; /* Ignored */ + uint32_t total_internal_die; /* Ignored */ + uint32_t cell_type; /* Ignored */ + uint32_t ecc_block_n_ecc_type; + uint32_t ecc_block_0_size; + uint32_t ecc_block_n_size; + uint32_t ecc_block_0_ecc_type; + uint32_t metadata_bytes; + uint32_t num_ecc_blocks_per_page; + uint32_t ecc_block_n_ecc_level_sdk; /* Ignored */ + uint32_t ecc_block_0_size_sdk; /* Ignored */ + uint32_t ecc_block_n_size_sdk; /* Ignored */ + uint32_t ecc_block_0_ecc_level_sdk; /* Ignored */ + uint32_t num_ecc_blocks_per_page_sdk; /* Ignored */ + uint32_t metadata_bytes_sdk; /* Ignored */ + uint32_t erase_threshold; + uint32_t boot_patch; + uint32_t patch_sectors; + uint32_t firmware1_starting_sector; + uint32_t firmware2_starting_sector; + uint32_t sectors_in_firmware1; + uint32_t sectors_in_firmware2; + uint32_t dbbt_search_area_start_address; + uint32_t badblock_marker_byte; + uint32_t badblock_marker_start_bit; + uint32_t bb_marker_physical_offset; +}; + +struct mx28_nand_dbbt { + uint32_t checksum; + uint32_t fingerprint; + uint32_t version; + uint32_t number_bb; + uint32_t number_2k_pages_bb; +}; + +struct mx28_nand_bbt { + uint32_t nand; + uint32_t number_bb; + uint32_t badblock[510]; +}; + +struct mx28_sd_drive_info { + uint32_t chip_num; + uint32_t drive_type; + uint32_t tag; + uint32_t first_sector_number; + uint32_t sector_count; +}; + +struct mx28_sd_config_block { + uint32_t signature; + uint32_t primary_boot_tag; + uint32_t secondary_boot_tag; + uint32_t num_copies; + struct mx28_sd_drive_info drv_info[1]; +}; + +static inline uint32_t mx28_nand_ecc_size_in_bits(uint32_t ecc_strength) +{ + return ecc_strength * 13; +} + +static inline uint32_t mx28_nand_get_ecc_strength(uint32_t page_data_size, + uint32_t page_oob_size) +{ + if (page_data_size == 2048) + return 8; + + if (page_data_size == 4096) { + if (page_oob_size == 128) + return 8; + + if (page_oob_size == 218) + return 16; + } + + return 0; +} + +static inline uint32_t mx28_nand_get_mark_offset(uint32_t page_data_size, + uint32_t ecc_strength) +{ + uint32_t chunk_data_size_in_bits; + uint32_t chunk_ecc_size_in_bits; + uint32_t chunk_total_size_in_bits; + uint32_t block_mark_chunk_number; + uint32_t block_mark_chunk_bit_offset; + uint32_t block_mark_bit_offset; + + chunk_data_size_in_bits = MXS_NAND_CHUNK_DATA_CHUNK_SIZE * 8; + chunk_ecc_size_in_bits = mx28_nand_ecc_size_in_bits(ecc_strength); + + chunk_total_size_in_bits = + chunk_data_size_in_bits + chunk_ecc_size_in_bits; + + /* Compute the bit offset of the block mark within the physical page. */ + block_mark_bit_offset = page_data_size * 8; + + /* Subtract the metadata bits. */ + block_mark_bit_offset -= MXS_NAND_METADATA_SIZE * 8; + + /* + * Compute the chunk number (starting at zero) in which the block mark + * appears. + */ + block_mark_chunk_number = + block_mark_bit_offset / chunk_total_size_in_bits; + + /* + * Compute the bit offset of the block mark within its chunk, and + * validate it. + */ + block_mark_chunk_bit_offset = block_mark_bit_offset - + (block_mark_chunk_number * chunk_total_size_in_bits); + + if (block_mark_chunk_bit_offset > chunk_data_size_in_bits) + return 1; + + /* + * Now that we know the chunk number in which the block mark appears, + * we can subtract all the ECC bits that appear before it. + */ + block_mark_bit_offset -= + block_mark_chunk_number * chunk_ecc_size_in_bits; + + return block_mark_bit_offset; +} + +static inline uint32_t mx28_nand_mark_byte_offset(void) +{ + uint32_t ecc_strength; + ecc_strength = mx28_nand_get_ecc_strength(nand_writesize, nand_oobsize); + return mx28_nand_get_mark_offset(nand_writesize, ecc_strength) >> 3; +} + +static inline uint32_t mx28_nand_mark_bit_offset(void) +{ + uint32_t ecc_strength; + ecc_strength = mx28_nand_get_ecc_strength(nand_writesize, nand_oobsize); + return mx28_nand_get_mark_offset(nand_writesize, ecc_strength) & 0x7; +} + +static uint32_t mx28_nand_block_csum(uint8_t *block, uint32_t size) +{ + uint32_t csum = 0; + int i; + + for (i = 0; i < size; i++) + csum += block[i]; + + return csum ^ 0xffffffff; +} + +static struct mx28_nand_fcb *mx28_nand_get_fcb(uint32_t size) +{ + struct mx28_nand_fcb *fcb; + uint32_t bcb_size_bytes; + uint32_t stride_size_bytes; + uint32_t bootstream_size_pages; + uint32_t fw1_start_page; + uint32_t fw2_start_page; + + fcb = malloc(nand_writesize); + if (!fcb) { + printf("MX28 NAND: Unable to allocate FCB\n"); + return NULL; + } + + memset(fcb, 0, nand_writesize); + + fcb->fingerprint = 0x20424346; + fcb->version = 0x01000000; + + /* + * FIXME: These here are default values as found in kobs-ng. We should + * probably retrieve the data from NAND or something. + */ + fcb->timing.data_setup = 80; + fcb->timing.data_hold = 60; + fcb->timing.address_setup = 25; + fcb->timing.dsample_time = 6; + + fcb->page_data_size = nand_writesize; + fcb->total_page_size = nand_writesize + nand_oobsize; + fcb->sectors_per_block = nand_erasesize / nand_writesize; + + fcb->num_ecc_blocks_per_page = (nand_writesize / 512) - 1; + fcb->ecc_block_0_size = 512; + fcb->ecc_block_n_size = 512; + fcb->metadata_bytes = 10; + + if (nand_writesize == 2048) { + fcb->ecc_block_n_ecc_type = 4; + fcb->ecc_block_0_ecc_type = 4; + } else if (nand_writesize == 4096) { + if (nand_oobsize == 128) { + fcb->ecc_block_n_ecc_type = 4; + fcb->ecc_block_0_ecc_type = 4; + } else if (nand_oobsize == 218) { + fcb->ecc_block_n_ecc_type = 8; + fcb->ecc_block_0_ecc_type = 8; + } + } + + if (fcb->ecc_block_n_ecc_type == 0) { + printf("MX28 NAND: Unsupported NAND geometry\n"); + goto err; + } + + fcb->boot_patch = 0; + fcb->patch_sectors = 0; + + fcb->badblock_marker_byte = mx28_nand_mark_byte_offset(); + fcb->badblock_marker_start_bit = mx28_nand_mark_bit_offset(); + fcb->bb_marker_physical_offset = nand_writesize; + + stride_size_bytes = STRIDE_PAGES * nand_writesize; + bcb_size_bytes = stride_size_bytes * STRIDE_COUNT; + + bootstream_size_pages = (size + (nand_writesize - 1)) / + nand_writesize; + + fw1_start_page = 2 * bcb_size_bytes / nand_writesize; + fw2_start_page = (2 * bcb_size_bytes + MAX_BOOTSTREAM_SIZE) / + nand_writesize; + + fcb->firmware1_starting_sector = fw1_start_page; + fcb->firmware2_starting_sector = fw2_start_page; + fcb->sectors_in_firmware1 = bootstream_size_pages; + fcb->sectors_in_firmware2 = bootstream_size_pages; + + fcb->dbbt_search_area_start_address = STRIDE_PAGES * STRIDE_COUNT; + + return fcb; + +err: + free(fcb); + return NULL; +} + +static struct mx28_nand_dbbt *mx28_nand_get_dbbt(void) +{ + struct mx28_nand_dbbt *dbbt; + + dbbt = malloc(nand_writesize); + if (!dbbt) { + printf("MX28 NAND: Unable to allocate DBBT\n"); + return NULL; + } + + memset(dbbt, 0, nand_writesize); + + dbbt->fingerprint = 0x54424244; + dbbt->version = 0x1; + + return dbbt; +} + +static inline uint8_t mx28_nand_parity_13_8(const uint8_t b) +{ + uint32_t parity = 0, tmp; + + tmp = ((b >> 6) ^ (b >> 5) ^ (b >> 3) ^ (b >> 2)) & 1; + parity |= tmp << 0; + + tmp = ((b >> 7) ^ (b >> 5) ^ (b >> 4) ^ (b >> 2) ^ (b >> 1)) & 1; + parity |= tmp << 1; + + tmp = ((b >> 7) ^ (b >> 6) ^ (b >> 5) ^ (b >> 1) ^ (b >> 0)) & 1; + parity |= tmp << 2; + + tmp = ((b >> 7) ^ (b >> 4) ^ (b >> 3) ^ (b >> 0)) & 1; + parity |= tmp << 3; + + tmp = ((b >> 6) ^ (b >> 4) ^ (b >> 3) ^ + (b >> 2) ^ (b >> 1) ^ (b >> 0)) & 1; + parity |= tmp << 4; + + return parity; +} + +static uint8_t *mx28_nand_fcb_block(struct mx28_nand_fcb *fcb) +{ + uint8_t *block; + uint8_t *ecc; + int i; + + block = malloc(nand_writesize + nand_oobsize); + if (!block) { + printf("MX28 NAND: Unable to allocate FCB block\n"); + return NULL; + } + + memset(block, 0, nand_writesize + nand_oobsize); + + /* Update the FCB checksum */ + fcb->checksum = mx28_nand_block_csum(((uint8_t *)fcb) + 4, 508); + + /* Figure 12-11. in iMX28RM, rev. 1, says FCB is at offset 12 */ + memcpy(block + 12, fcb, sizeof(struct mx28_nand_fcb)); + + /* ECC is at offset 12 + 512 */ + ecc = block + 12 + 512; + + /* Compute the ECC parity */ + for (i = 0; i < sizeof(struct mx28_nand_fcb); i++) + ecc[i] = mx28_nand_parity_13_8(block[i + 12]); + + return block; +} + +static int mx28_nand_write_fcb(struct mx28_nand_fcb *fcb, char *buf) +{ + uint32_t offset; + uint8_t *fcbblock; + int ret = 0; + int i; + + fcbblock = mx28_nand_fcb_block(fcb); + if (!fcbblock) + return -1; + + for (i = 0; i < STRIDE_PAGES * STRIDE_COUNT; i += STRIDE_PAGES) { + offset = i * nand_writesize; + memcpy(buf + offset, fcbblock, nand_writesize + nand_oobsize); + } + + free(fcbblock); + return ret; +} + +static int mx28_nand_write_dbbt(struct mx28_nand_dbbt *dbbt, char *buf) +{ + uint32_t offset; + int i = STRIDE_PAGES * STRIDE_COUNT; + + for (; i < 2 * STRIDE_PAGES * STRIDE_COUNT; i += STRIDE_PAGES) { + offset = i * nand_writesize; + memcpy(buf + offset, dbbt, sizeof(struct mx28_nand_dbbt)); + } + + return 0; +} + +static int mx28_nand_write_firmware(struct mx28_nand_fcb *fcb, int infd, + char *buf) +{ + int ret; + off_t size; + uint32_t offset1, offset2; + + size = lseek(infd, 0, SEEK_END); + lseek(infd, 0, SEEK_SET); + + offset1 = fcb->firmware1_starting_sector * nand_writesize; + offset2 = fcb->firmware2_starting_sector * nand_writesize; + + ret = read(infd, buf + offset1, size); + if (ret != size) + return -1; + + memcpy(buf + offset2, buf + offset1, size); + + return 0; +} + +void usage(void) +{ + printf( + "Usage: mx28image [ops] <type> <infile> <outfile>\n" + "Augment BootStream file with a proper header for i.MX28 boot\n" + "\n" + " <type> type of image:\n" + " \"nand\" for NAND image\n" + " \"sd\" for SD image\n" + " <infile> input file, the u-boot.sb bootstream\n" + " <outfile> output file, the bootable image\n" + "\n"); + printf( + "For NAND boot, these options are accepted:\n" + " -w <size> NAND page size\n" + " -o <size> NAND OOB size\n" + " -e <size> NAND erase size\n" + "\n" + "For SD boot, these options are accepted:\n" + " -p <sector> Sector where the SGTL partition starts\n" + ); +} + +static int mx28_create_nand_image(int infd, int outfd) +{ + struct mx28_nand_fcb *fcb; + struct mx28_nand_dbbt *dbbt; + int ret = -1; + char *buf; + int size; + ssize_t wr_size; + + size = nand_writesize * 512 + 2 * MAX_BOOTSTREAM_SIZE; + + buf = malloc(size); + if (!buf) { + printf("Can not allocate output buffer of %d bytes\n", size); + goto err0; + } + + memset(buf, 0, size); + + fcb = mx28_nand_get_fcb(MAX_BOOTSTREAM_SIZE); + if (!fcb) { + printf("Unable to compile FCB\n"); + goto err1; + } + + dbbt = mx28_nand_get_dbbt(); + if (!dbbt) { + printf("Unable to compile DBBT\n"); + goto err2; + } + + ret = mx28_nand_write_fcb(fcb, buf); + if (ret) { + printf("Unable to write FCB to buffer\n"); + goto err3; + } + + ret = mx28_nand_write_dbbt(dbbt, buf); + if (ret) { + printf("Unable to write DBBT to buffer\n"); + goto err3; + } + + ret = mx28_nand_write_firmware(fcb, infd, buf); + if (ret) { + printf("Unable to write firmware to buffer\n"); + goto err3; + } + + wr_size = write(outfd, buf, size); + if (wr_size != size) { + ret = -1; + goto err3; + } + + ret = 0; + +err3: + free(dbbt); +err2: + free(fcb); +err1: + free(buf); +err0: + return ret; +} + +static int mx28_create_sd_image(int infd, int outfd) +{ + int ret = -1; + uint32_t *buf; + int size; + off_t fsize; + ssize_t wr_size; + struct mx28_sd_config_block *cb; + + fsize = lseek(infd, 0, SEEK_END); + lseek(infd, 0, SEEK_SET); + size = fsize + 512; + + buf = malloc(size); + if (!buf) { + printf("Can not allocate output buffer of %d bytes\n", size); + goto err0; + } + + ret = read(infd, (uint8_t *)buf + 512, fsize); + if (ret != fsize) { + ret = -1; + goto err1; + } + + cb = (struct mx28_sd_config_block *)buf; + + cb->signature = 0x00112233; + cb->primary_boot_tag = 0x1; + cb->secondary_boot_tag = 0x1; + cb->num_copies = 1; + cb->drv_info[0].chip_num = 0x0; + cb->drv_info[0].drive_type = 0x0; + cb->drv_info[0].tag = 0x1; + cb->drv_info[0].first_sector_number = sd_sector + 1; + cb->drv_info[0].sector_count = (size - 1) / 512; + + wr_size = write(outfd, buf, size); + if (wr_size != size) { + ret = -1; + goto err1; + } + + ret = 0; + +err1: + free(buf); +err0: + return ret; +} + +int parse_ops(int argc, char **argv) +{ + int i; + int tmp; + char *end; + enum param { + PARAM_WRITE, + PARAM_OOB, + PARAM_ERASE, + PARAM_PART, + PARAM_SD, + PARAM_NAND + }; + int type; + + for (i = 1; i < argc; i++) { + if (!strncmp(argv[i], "-w", 2)) + type = PARAM_WRITE; + else if (!strncmp(argv[i], "-o", 2)) + type = PARAM_OOB; + else if (!strncmp(argv[i], "-e", 2)) + type = PARAM_ERASE; + else if (!strncmp(argv[i], "-p", 2)) + type = PARAM_PART; + else /* SD/MMC */ + break; + + tmp = strtol(argv[++i], &end, 10); + if (tmp % 2) + return -1; + if (tmp <= 0) + return -1; + + if (type == PARAM_WRITE) + nand_writesize = tmp; + if (type == PARAM_OOB) + nand_oobsize = tmp; + if (type == PARAM_ERASE) + nand_erasesize = tmp; + if (type == PARAM_PART) + sd_sector = tmp; + } + + if (strcmp(argv[i], "sd") && strcmp(argv[i], "nand")) + return -1; + + if (i + 3 != argc) + return -1; + + return i; +} + +int main(int argc, char **argv) +{ + int infd, outfd; + int ret = 0; + int offset; + + offset = parse_ops(argc, argv); + if (offset < 0) { + usage(); + ret = 1; + goto err1; + } + + infd = open(argv[offset + 1], O_RDONLY); + if (infd < 0) { + printf("Input BootStream file can not be opened\n"); + ret = 2; + goto err1; + } + + outfd = open(argv[offset + 2], O_CREAT | O_TRUNC | O_WRONLY, + S_IRUSR | S_IWUSR); + if (outfd < 0) { + printf("Output file can not be created\n"); + ret = 3; + goto err2; + } + + if (!strcmp(argv[offset], "sd")) + ret = mx28_create_sd_image(infd, outfd); + else if (!strcmp(argv[offset], "nand")) + ret = mx28_create_nand_image(infd, outfd); + + close(outfd); +err2: + close(infd); +err1: + return ret; +} |