mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-21 01:18:52 +09:00
![Marek Vasut](/assets/img/avatar_default.png)
Add support for the SoCFPGA header v1 , which is used on Arria 10. Thus far the mkimage-socfpga image only supported header format v0 used on Cyclone V and Arria V, but is not supported on Arria 10. The layout of the v0 and v1 header is similar, yet there are a few differences, see the patch body for details. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Dinh Nguyen <dinguyen@kernel.org> Cc: Chin Liang See <chin.liang.see@intel.com>
402 lines
11 KiB
C
402 lines
11 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright (C) 2014 Charles Manning <cdhmanning@gmail.com>
|
|
*
|
|
* Reference documents:
|
|
* Cyclone V SoC: https://www.altera.com/content/dam/altera-www/global/en_US/pdfs/literature/hb/cyclone-v/cv_5400a.pdf
|
|
* Arria V SoC: https://www.altera.com/content/dam/altera-www/global/en_US/pdfs/literature/hb/arria-v/av_5400a.pdf
|
|
* Arria 10 SoC: https://www.altera.com/content/dam/altera-www/global/en_US/pdfs/literature/hb/arria-10/a10_5400a.pdf
|
|
*
|
|
* Bootable SoCFPGA image requires a structure of the following format
|
|
* positioned at offset 0x40 of the bootable image. Endian is LSB.
|
|
*
|
|
* There are two versions of the SoCFPGA header format, v0 and v1.
|
|
* The version 0 is used by Cyclone V SoC and Arria V SoC, while
|
|
* the version 1 is used by the Arria 10 SoC.
|
|
*
|
|
* Version 0:
|
|
* Offset Length Usage
|
|
* -----------------------
|
|
* 0x40 4 Validation word (0x31305341)
|
|
* 0x44 1 Version (0x0)
|
|
* 0x45 1 Flags (unused, zero is fine)
|
|
* 0x46 2 Length (in units of u32, including the end checksum).
|
|
* 0x48 2 Zero (0x0)
|
|
* 0x4A 2 Checksum over the header. NB Not CRC32
|
|
*
|
|
* Version 1:
|
|
* Offset Length Usage
|
|
* -----------------------
|
|
* 0x40 4 Validation word (0x31305341)
|
|
* 0x44 1 Version (0x1)
|
|
* 0x45 1 Flags (unused, zero is fine)
|
|
* 0x46 2 Header length (in units of u8).
|
|
* 0x48 4 Length (in units of u8).
|
|
* 0x4C 4 Image entry offset from standard of header
|
|
* 0x50 2 Zero (0x0)
|
|
* 0x52 2 Checksum over the header. NB Not CRC32
|
|
*
|
|
* At the end of the code we have a 32-bit CRC checksum over whole binary
|
|
* excluding the CRC.
|
|
*
|
|
* Note that the CRC used here is **not** the zlib/Adler crc32. It is the
|
|
* CRC-32 used in bzip2, ethernet and elsewhere.
|
|
*
|
|
* The Image entry offset in version 1 image is relative the the start of
|
|
* the header, 0x40, and must not be a negative number. Therefore, it is
|
|
* only possible to make the SoCFPGA jump forward. The U-Boot bootloader
|
|
* places a trampoline instruction at offset 0x5c, 0x14 bytes from the
|
|
* start of the SoCFPGA header, which jumps to the reset vector.
|
|
*
|
|
* The image is padded out to 64k, because that is what is
|
|
* typically used to write the image to the boot medium.
|
|
*/
|
|
|
|
#include "pbl_crc32.h"
|
|
#include "imagetool.h"
|
|
#include "mkimage.h"
|
|
|
|
#include <image.h>
|
|
|
|
#define HEADER_OFFSET 0x40
|
|
#define VALIDATION_WORD 0x31305341
|
|
|
|
static uint8_t buffer_v0[0x10000];
|
|
static uint8_t buffer_v1[0x40000];
|
|
|
|
struct socfpga_header_v0 {
|
|
uint32_t validation;
|
|
uint8_t version;
|
|
uint8_t flags;
|
|
uint16_t length_u32;
|
|
uint16_t zero;
|
|
uint16_t checksum;
|
|
};
|
|
|
|
struct socfpga_header_v1 {
|
|
uint32_t validation;
|
|
uint8_t version;
|
|
uint8_t flags;
|
|
uint16_t header_u8;
|
|
uint32_t length_u8;
|
|
uint32_t entry_offset;
|
|
uint16_t zero;
|
|
uint16_t checksum;
|
|
};
|
|
|
|
static unsigned int sfp_hdr_size(uint8_t ver)
|
|
{
|
|
if (ver == 0)
|
|
return sizeof(struct socfpga_header_v0);
|
|
if (ver == 1)
|
|
return sizeof(struct socfpga_header_v1);
|
|
return 0;
|
|
}
|
|
|
|
static unsigned int sfp_pad_size(uint8_t ver)
|
|
{
|
|
if (ver == 0)
|
|
return sizeof(buffer_v0);
|
|
if (ver == 1)
|
|
return sizeof(buffer_v1);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* The header checksum is just a very simple checksum over
|
|
* the header area.
|
|
* There is still a crc32 over the whole lot.
|
|
*/
|
|
static uint16_t sfp_hdr_checksum(uint8_t *buf, unsigned char ver)
|
|
{
|
|
uint16_t ret = 0;
|
|
int len = sfp_hdr_size(ver) - sizeof(ret);
|
|
|
|
while (--len)
|
|
ret += *buf++;
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void sfp_build_header(uint8_t *buf, uint8_t ver, uint8_t flags,
|
|
uint32_t length_bytes)
|
|
{
|
|
struct socfpga_header_v0 header_v0 = {
|
|
.validation = cpu_to_le32(VALIDATION_WORD),
|
|
.version = 0,
|
|
.flags = flags,
|
|
.length_u32 = cpu_to_le16(length_bytes / 4),
|
|
.zero = 0,
|
|
};
|
|
|
|
struct socfpga_header_v1 header_v1 = {
|
|
.validation = cpu_to_le32(VALIDATION_WORD),
|
|
.version = 1,
|
|
.flags = flags,
|
|
.header_u8 = cpu_to_le16(sizeof(header_v1)),
|
|
.length_u8 = cpu_to_le32(length_bytes),
|
|
.entry_offset = cpu_to_le32(0x14), /* Trampoline offset */
|
|
.zero = 0,
|
|
};
|
|
|
|
uint16_t csum;
|
|
|
|
if (ver == 0) {
|
|
csum = sfp_hdr_checksum((uint8_t *)&header_v0, 0);
|
|
header_v0.checksum = cpu_to_le16(csum);
|
|
memcpy(buf, &header_v0, sizeof(header_v0));
|
|
} else {
|
|
csum = sfp_hdr_checksum((uint8_t *)&header_v1, 1);
|
|
header_v1.checksum = cpu_to_le16(csum);
|
|
memcpy(buf, &header_v1, sizeof(header_v1));
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Perform a rudimentary verification of header and return
|
|
* size of image.
|
|
*/
|
|
static int sfp_verify_header(const uint8_t *buf, uint8_t *ver)
|
|
{
|
|
struct socfpga_header_v0 header_v0;
|
|
struct socfpga_header_v1 header_v1;
|
|
uint16_t hdr_csum, sfp_csum;
|
|
uint32_t img_len;
|
|
|
|
/*
|
|
* Header v0 is always smaller than Header v1 and the validation
|
|
* word and version field is at the same place, so use Header v0
|
|
* to check for version during verifiction and upgrade to Header
|
|
* v1 if needed.
|
|
*/
|
|
memcpy(&header_v0, buf, sizeof(header_v0));
|
|
|
|
if (le32_to_cpu(header_v0.validation) != VALIDATION_WORD)
|
|
return -1;
|
|
|
|
if (header_v0.version == 0) {
|
|
hdr_csum = le16_to_cpu(header_v0.checksum);
|
|
sfp_csum = sfp_hdr_checksum((uint8_t *)&header_v0, 0);
|
|
img_len = le16_to_cpu(header_v0.length_u32) * 4;
|
|
} else if (header_v0.version == 1) {
|
|
memcpy(&header_v1, buf, sizeof(header_v1));
|
|
hdr_csum = le16_to_cpu(header_v1.checksum);
|
|
sfp_csum = sfp_hdr_checksum((uint8_t *)&header_v1, 1);
|
|
img_len = le32_to_cpu(header_v1.length_u8);
|
|
} else { /* Invalid version */
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* Verify checksum */
|
|
if (hdr_csum != sfp_csum)
|
|
return -EINVAL;
|
|
|
|
return img_len;
|
|
}
|
|
|
|
/* Sign the buffer and return the signed buffer size */
|
|
static int sfp_sign_buffer(uint8_t *buf, uint8_t ver, uint8_t flags,
|
|
int len, int pad_64k)
|
|
{
|
|
uint32_t calc_crc;
|
|
|
|
/* Align the length up */
|
|
len = (len + 3) & ~3;
|
|
|
|
/* Build header, adding 4 bytes to length to hold the CRC32. */
|
|
sfp_build_header(buf + HEADER_OFFSET, ver, flags, len + 4);
|
|
|
|
/* Calculate and apply the CRC */
|
|
calc_crc = ~pbl_crc32(0, (char *)buf, len);
|
|
|
|
*((uint32_t *)(buf + len)) = cpu_to_le32(calc_crc);
|
|
|
|
if (!pad_64k)
|
|
return len + 4;
|
|
|
|
return sfp_pad_size(ver);
|
|
}
|
|
|
|
/* Verify that the buffer looks sane */
|
|
static int sfp_verify_buffer(const uint8_t *buf)
|
|
{
|
|
int len; /* Including 32bit CRC */
|
|
uint32_t calc_crc;
|
|
uint32_t buf_crc;
|
|
uint8_t ver = 0;
|
|
|
|
len = sfp_verify_header(buf + HEADER_OFFSET, &ver);
|
|
if (len < 0) {
|
|
debug("Invalid header\n");
|
|
return -1;
|
|
}
|
|
|
|
if (len < HEADER_OFFSET || len > sfp_pad_size(ver)) {
|
|
debug("Invalid header length (%i)\n", len);
|
|
return -1;
|
|
}
|
|
|
|
/*
|
|
* Adjust length to the base of the CRC.
|
|
* Check the CRC.
|
|
*/
|
|
len -= 4;
|
|
|
|
calc_crc = ~pbl_crc32(0, (const char *)buf, len);
|
|
|
|
buf_crc = le32_to_cpu(*((uint32_t *)(buf + len)));
|
|
|
|
if (buf_crc != calc_crc) {
|
|
fprintf(stderr, "CRC32 does not match (%08x != %08x)\n",
|
|
buf_crc, calc_crc);
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* mkimage glue functions */
|
|
static int socfpgaimage_verify_header(unsigned char *ptr, int image_size,
|
|
struct image_tool_params *params)
|
|
{
|
|
if (image_size < 0x80)
|
|
return -1;
|
|
|
|
return sfp_verify_buffer(ptr);
|
|
}
|
|
|
|
static void socfpgaimage_print_header(const void *ptr)
|
|
{
|
|
if (sfp_verify_buffer(ptr) == 0)
|
|
printf("Looks like a sane SOCFPGA preloader\n");
|
|
else
|
|
printf("Not a sane SOCFPGA preloader\n");
|
|
}
|
|
|
|
static int socfpgaimage_check_params(struct image_tool_params *params)
|
|
{
|
|
/* Not sure if we should be accepting fflags */
|
|
return (params->dflag && (params->fflag || params->lflag)) ||
|
|
(params->fflag && (params->dflag || params->lflag)) ||
|
|
(params->lflag && (params->dflag || params->fflag));
|
|
}
|
|
|
|
static int socfpgaimage_check_image_types_v0(uint8_t type)
|
|
{
|
|
if (type == IH_TYPE_SOCFPGAIMAGE)
|
|
return EXIT_SUCCESS;
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
static int socfpgaimage_check_image_types_v1(uint8_t type)
|
|
{
|
|
if (type == IH_TYPE_SOCFPGAIMAGE_V1)
|
|
return EXIT_SUCCESS;
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
/*
|
|
* To work in with the mkimage framework, we do some ugly stuff...
|
|
*
|
|
* First, socfpgaimage_vrec_header() is called.
|
|
* We prepend a fake header big enough to make the file sfp_pad_size().
|
|
* This gives us enough space to do what we want later.
|
|
*
|
|
* Next, socfpgaimage_set_header() is called.
|
|
* We fix up the buffer by moving the image to the start of the buffer.
|
|
* We now have some room to do what we need (add CRC and padding).
|
|
*/
|
|
|
|
static int data_size;
|
|
|
|
static int sfp_fake_header_size(unsigned int size, uint8_t ver)
|
|
{
|
|
return sfp_pad_size(ver) - size;
|
|
}
|
|
|
|
static int sfp_vrec_header(struct image_tool_params *params,
|
|
struct image_type_params *tparams, uint8_t ver)
|
|
{
|
|
struct stat sbuf;
|
|
|
|
if (params->datafile &&
|
|
stat(params->datafile, &sbuf) == 0 &&
|
|
sbuf.st_size <= (sfp_pad_size(ver) - sizeof(uint32_t))) {
|
|
data_size = sbuf.st_size;
|
|
tparams->header_size = sfp_fake_header_size(data_size, ver);
|
|
}
|
|
return 0;
|
|
|
|
}
|
|
|
|
static int socfpgaimage_vrec_header_v0(struct image_tool_params *params,
|
|
struct image_type_params *tparams)
|
|
{
|
|
return sfp_vrec_header(params, tparams, 0);
|
|
}
|
|
|
|
static int socfpgaimage_vrec_header_v1(struct image_tool_params *params,
|
|
struct image_type_params *tparams)
|
|
{
|
|
return sfp_vrec_header(params, tparams, 1);
|
|
}
|
|
|
|
static void sfp_set_header(void *ptr, unsigned char ver)
|
|
{
|
|
uint8_t *buf = (uint8_t *)ptr;
|
|
|
|
/*
|
|
* This function is called after vrec_header() has been called.
|
|
* At this stage we have the sfp_fake_header_size() dummy bytes
|
|
* followed by data_size image bytes. Total = sfp_pad_size().
|
|
* We need to fix the buffer by moving the image bytes back to
|
|
* the beginning of the buffer, then actually do the signing stuff...
|
|
*/
|
|
memmove(buf, buf + sfp_fake_header_size(data_size, ver), data_size);
|
|
memset(buf + data_size, 0, sfp_fake_header_size(data_size, ver));
|
|
|
|
sfp_sign_buffer(buf, ver, 0, data_size, 0);
|
|
}
|
|
|
|
static void socfpgaimage_set_header_v0(void *ptr, struct stat *sbuf, int ifd,
|
|
struct image_tool_params *params)
|
|
{
|
|
sfp_set_header(ptr, 0);
|
|
}
|
|
|
|
static void socfpgaimage_set_header_v1(void *ptr, struct stat *sbuf, int ifd,
|
|
struct image_tool_params *params)
|
|
{
|
|
sfp_set_header(ptr, 1);
|
|
}
|
|
|
|
U_BOOT_IMAGE_TYPE(
|
|
socfpgaimage,
|
|
"Altera SoCFPGA Cyclone V / Arria V image support",
|
|
0, /* This will be modified by vrec_header() */
|
|
(void *)buffer_v0,
|
|
socfpgaimage_check_params,
|
|
socfpgaimage_verify_header,
|
|
socfpgaimage_print_header,
|
|
socfpgaimage_set_header_v0,
|
|
NULL,
|
|
socfpgaimage_check_image_types_v0,
|
|
NULL,
|
|
socfpgaimage_vrec_header_v0
|
|
);
|
|
|
|
U_BOOT_IMAGE_TYPE(
|
|
socfpgaimage_v1,
|
|
"Altera SoCFPGA Arria10 image support",
|
|
0, /* This will be modified by vrec_header() */
|
|
(void *)buffer_v1,
|
|
socfpgaimage_check_params,
|
|
socfpgaimage_verify_header,
|
|
socfpgaimage_print_header,
|
|
socfpgaimage_set_header_v1,
|
|
NULL,
|
|
socfpgaimage_check_image_types_v1,
|
|
NULL,
|
|
socfpgaimage_vrec_header_v1
|
|
);
|