--- /dev/null
+/*
+ * 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;
+}
projects / u-boot / commitdiff