Patrick Georgi (pgeorgi@google.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/9415
-gerrit
commit 91f75a7c6387a9e658113b92af0ac4e5095db05c Author: Ionela Voinescu ionela.voinescu@imgtec.com Date: Fri Oct 31 17:21:41 2014 +0000
util/bimgtool: Use CRC 16 instead of CRC x25.
Switched to CRC 16 as it's 40% faster than CRC x25. Both CRC 16 and CRC x25 are supported and either can be selected through define directives.
BUG=chrome-os-partner:31438 TEST=built urara bootblock and verified content of bootblock.bin, observed expected content; ran it on Pistachio FPGA and observed that its content is read properly by bootrom. BRANCH=none
Change-Id: I36dec6ec2d6616343f97cc8b6486c0a3e4ea49ba Signed-off-by: Patrick Georgi pgeorgi@chromium.org Original-Commit-Id: 6d9318097ca9270bc245e7de4aff5f78dfbc1606 Original-Change-Id: If1a78350e0b48d91bfe64ead45f852f44ba3cf9a Original-Signed-off-by: Ionela Voinescu ionela.voinescu@imgtec.com Original-Reviewed-on: https://chromium-review.googlesource.com/226840 Original-Reviewed-by: Vadim Bendebury vbendeb@chromium.org Original-Commit-Queue: Vadim Bendebury vbendeb@chromium.org Original-Tested-by: Vadim Bendebury vbendeb@chromium.org --- util/bimgtool/bimgtool.c | 98 ++++++++++++++++++++++++++++++++++++++++++++---- 1 file changed, 90 insertions(+), 8 deletions(-)
diff --git a/util/bimgtool/bimgtool.c b/util/bimgtool/bimgtool.c index 72de6db..acbfdfb 100644 --- a/util/bimgtool/bimgtool.c +++ b/util/bimgtool/bimgtool.c @@ -40,9 +40,18 @@ struct bimg_header { struct bimg_data_header { uint32_t size; uint32_t dest_addr; + uint16_t dummy; uint16_t crc; } __attribute__((packed));
+struct crc_t { + uint16_t (*crc_f)(uint16_t crc, void *void_buf, size_t size); + uint32_t crc_init; + uint16_t ver_major; + uint16_t ver_minor; +}; + + #define BIMG_MAGIC /* y */ 0xabbadaba /* doo! */
#define BIMG_OP_MASK (0xf << 0) @@ -52,7 +61,7 @@ struct bimg_data_header {
#define MAX_RECORD_BYTES 0x8000
-#define CRC_INIT 0xffff +#define CRC_16
#define error(msg...) fprintf(stderr, "ERROR: " msg)
@@ -80,6 +89,72 @@ static uint16_t crc_x25(uint16_t crc, void *void_buf, size_t size) return crc; }
+static uint16_t crc_16(uint16_t crc, void *void_buf, size_t size) +{ + /* + * CRC table for the CRC-16. + * The poly is 0x8005 (x^16 + x^15 + x^2 + 1) + */ + static const uint16_t crc16_table[256] = { + 0x0000, 0xC0C1, 0xC181, 0x0140, 0xC301, 0x03C0, 0x0280, 0xC241, + 0xC601, 0x06C0, 0x0780, 0xC741, 0x0500, 0xC5C1, 0xC481, 0x0440, + 0xCC01, 0x0CC0, 0x0D80, 0xCD41, 0x0F00, 0xCFC1, 0xCE81, 0x0E40, + 0x0A00, 0xCAC1, 0xCB81, 0x0B40, 0xC901, 0x09C0, 0x0880, 0xC841, + 0xD801, 0x18C0, 0x1980, 0xD941, 0x1B00, 0xDBC1, 0xDA81, 0x1A40, + 0x1E00, 0xDEC1, 0xDF81, 0x1F40, 0xDD01, 0x1DC0, 0x1C80, 0xDC41, + 0x1400, 0xD4C1, 0xD581, 0x1540, 0xD701, 0x17C0, 0x1680, 0xD641, + 0xD201, 0x12C0, 0x1380, 0xD341, 0x1100, 0xD1C1, 0xD081, 0x1040, + 0xF001, 0x30C0, 0x3180, 0xF141, 0x3300, 0xF3C1, 0xF281, 0x3240, + 0x3600, 0xF6C1, 0xF781, 0x3740, 0xF501, 0x35C0, 0x3480, 0xF441, + 0x3C00, 0xFCC1, 0xFD81, 0x3D40, 0xFF01, 0x3FC0, 0x3E80, 0xFE41, + 0xFA01, 0x3AC0, 0x3B80, 0xFB41, 0x3900, 0xF9C1, 0xF881, 0x3840, + 0x2800, 0xE8C1, 0xE981, 0x2940, 0xEB01, 0x2BC0, 0x2A80, 0xEA41, + 0xEE01, 0x2EC0, 0x2F80, 0xEF41, 0x2D00, 0xEDC1, 0xEC81, 0x2C40, + 0xE401, 0x24C0, 0x2580, 0xE541, 0x2700, 0xE7C1, 0xE681, 0x2640, + 0x2200, 0xE2C1, 0xE381, 0x2340, 0xE101, 0x21C0, 0x2080, 0xE041, + 0xA001, 0x60C0, 0x6180, 0xA141, 0x6300, 0xA3C1, 0xA281, 0x6240, + 0x6600, 0xA6C1, 0xA781, 0x6740, 0xA501, 0x65C0, 0x6480, 0xA441, + 0x6C00, 0xACC1, 0xAD81, 0x6D40, 0xAF01, 0x6FC0, 0x6E80, 0xAE41, + 0xAA01, 0x6AC0, 0x6B80, 0xAB41, 0x6900, 0xA9C1, 0xA881, 0x6840, + 0x7800, 0xB8C1, 0xB981, 0x7940, 0xBB01, 0x7BC0, 0x7A80, 0xBA41, + 0xBE01, 0x7EC0, 0x7F80, 0xBF41, 0x7D00, 0xBDC1, 0xBC81, 0x7C40, + 0xB401, 0x74C0, 0x7580, 0xB541, 0x7700, 0xB7C1, 0xB681, 0x7640, + 0x7200, 0xB2C1, 0xB381, 0x7340, 0xB101, 0x71C0, 0x7080, 0xB041, + 0x5000, 0x90C1, 0x9181, 0x5140, 0x9301, 0x53C0, 0x5280, 0x9241, + 0x9601, 0x56C0, 0x5780, 0x9741, 0x5500, 0x95C1, 0x9481, 0x5440, + 0x9C01, 0x5CC0, 0x5D80, 0x9D41, 0x5F00, 0x9FC1, 0x9E81, 0x5E40, + 0x5A00, 0x9AC1, 0x9B81, 0x5B40, 0x9901, 0x59C0, 0x5880, 0x9841, + 0x8801, 0x48C0, 0x4980, 0x8941, 0x4B00, 0x8BC1, 0x8A81, 0x4A40, + 0x4E00, 0x8EC1, 0x8F81, 0x4F40, 0x8D01, 0x4DC0, 0x4C80, 0x8C41, + 0x4400, 0x84C1, 0x8581, 0x4540, 0x8701, 0x47C0, 0x4680, 0x8641, + 0x8201, 0x42C0, 0x4380, 0x8341, 0x4100, 0x81C1, 0x8081, 0x4040 + }; + uint8_t *buf, data; + + for (buf = void_buf; size; size--) { + data = *buf++; + crc = (crc >> 8) ^ crc16_table[(crc ^ data) & 0xff]; + } + + return crc; + +} + + +static struct crc_t crc_type = { +#if defined(CRC_16) + .crc_f = crc_16, + .crc_init = 0, + .ver_major = 2, + .ver_minor = 0 +#elif defined(CRC_X25) + .crc_f = crc_x25, + .crc_init = 0xffff, + .ver_major = 1, + .ver_minor = 0 +#endif +}; + static int write_binary(FILE *out, FILE *in, struct bimg_header *hdr) { static uint8_t file_buf[MAX_RECORD_BYTES]; @@ -88,8 +163,13 @@ static int write_binary(FILE *out, FILE *in, struct bimg_header *hdr)
data_hdr.dest_addr = hdr->entry_addr;
+ /* + * The read binary data has to be split in chunks of max 64KiB - 1 byte + * (SPI controller limitation). Each chunk will have its own header in + * order to respect the BIMG format. + */ while ((data_hdr.size = fread(file_buf, 1, sizeof(file_buf), in))) { - data_hdr.crc = crc_x25(CRC_INIT, &data_hdr, + data_hdr.crc = crc_type.crc_f(crc_type.crc_init, &data_hdr, sizeof(data_hdr) - sizeof(data_hdr.crc));
if (fwrite(&data_hdr, sizeof(data_hdr), 1, out) != 1) @@ -103,7 +183,8 @@ static int write_binary(FILE *out, FILE *in, struct bimg_header *hdr)
data_hdr.dest_addr += n_written; hdr->data_size += sizeof(data_hdr) + n_written; - hdr->data_crc = crc_x25(hdr->data_crc, file_buf, n_written); + hdr->data_crc = crc_type.crc_f(hdr->data_crc, + file_buf, n_written); }
if (ferror(in)) @@ -119,7 +200,7 @@ static int write_final(FILE *out, struct bimg_header *hdr) .dest_addr = ~0, };
- data_hdr.crc = crc_x25(CRC_INIT, &data_hdr, + data_hdr.crc = crc_type.crc_f(crc_type.crc_init, &data_hdr, sizeof(data_hdr) - sizeof(data_hdr.crc));
if (fwrite(&data_hdr, sizeof(data_hdr), 1, out) != 1) @@ -153,10 +234,10 @@ int main(int argc, char *argv[]) int err; struct bimg_header hdr = { .magic = BIMG_MAGIC, - .ver_major = 1, - .ver_minor = 0, + .ver_major = crc_type.ver_major, + .ver_minor = crc_type.ver_minor, .flags = BIMG_OP_EXEC_NO_RETURN | BIMG_DATA_CHECKSUM, - .data_crc = CRC_INIT, + .data_crc = crc_type.crc_init, };
if (argc != 4) { @@ -197,7 +278,8 @@ int main(int argc, char *argv[]) goto out_err_close_out; }
- hdr.crc = crc_x25(CRC_INIT, &hdr, sizeof(hdr) - sizeof(hdr.crc)); + hdr.crc = crc_type.crc_f(crc_type.crc_init, &hdr, + sizeof(hdr) - sizeof(hdr.crc));
if (fseek(out_file, 0, SEEK_SET)) { error("Failed to seek to header: %d\n", errno);