6b13f685e
김민수
BSP 최초 추가
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#include "pbl_crc32.h"
#include "imagetool.h"
#include "mkimage.h"
#include <image.h>
#define HEADER_OFFSET 0x40
#define VALIDATION_WORD 0x31305341
#define PADDED_SIZE 0x10000
#define MAX_INPUT_SIZE (PADDED_SIZE - sizeof(uint32_t))
static uint8_t buffer[PADDED_SIZE];
static struct socfpga_header {
uint32_t validation;
uint8_t version;
uint8_t flags;
uint16_t length_u32;
uint16_t zero;
uint16_t checksum;
} header;
static uint16_t hdr_checksum(struct socfpga_header *header)
{
int len = sizeof(*header) - sizeof(header->checksum);
uint8_t *buf = (uint8_t *)header;
uint16_t ret = 0;
while (--len)
ret += *buf++;
return ret;
}
static void build_header(uint8_t *buf, uint8_t version, uint8_t flags,
uint16_t length_bytes)
{
header.validation = cpu_to_le32(VALIDATION_WORD);
header.version = version;
header.flags = flags;
header.length_u32 = cpu_to_le16(length_bytes/4);
header.zero = 0;
header.checksum = cpu_to_le16(hdr_checksum(&header));
memcpy(buf, &header, sizeof(header));
}
static int verify_header(const uint8_t *buf)
{
memcpy(&header, buf, sizeof(header));
if (le32_to_cpu(header.validation) != VALIDATION_WORD)
return -1;
if (le16_to_cpu(header.checksum) != hdr_checksum(&header))
return -1;
return le16_to_cpu(header.length_u32) * 4;
}
static int sign_buffer(uint8_t *buf,
uint8_t version, uint8_t flags,
int len, int pad_64k)
{
uint32_t calc_crc;
len = (len + 3) & (~3);
build_header(buf + HEADER_OFFSET, version, flags, len + 4);
calc_crc = ~pbl_crc32(0, (char *)buf, len);
*((uint32_t *)(buf + len)) = cpu_to_le32(calc_crc);
if (!pad_64k)
return len + 4;
return PADDED_SIZE;
}
static int verify_buffer(const uint8_t *buf)
{
int len;
uint32_t calc_crc;
uint32_t buf_crc;
len = verify_header(buf + HEADER_OFFSET);
if (len < 0) {
debug("Invalid header
");
return -1;
}
if (len < HEADER_OFFSET || len > PADDED_SIZE) {
debug("Invalid header length (%i)
", len);
return -1;
}
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)
",
buf_crc, calc_crc);
return -1;
}
return 0;
}
static int socfpgaimage_verify_header(unsigned char *ptr, int image_size,
struct image_tool_params *params)
{
if (image_size != PADDED_SIZE)
return -1;
return verify_buffer(ptr);
}
static void socfpgaimage_print_header(const void *ptr)
{
if (verify_buffer(ptr) == 0)
printf("Looks like a sane SOCFPGA preloader
");
else
printf("Not a sane SOCFPGA preloader
");
}
static int socfpgaimage_check_params(struct image_tool_params *params)
{
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(uint8_t type)
{
if (type == IH_TYPE_SOCFPGAIMAGE)
return EXIT_SUCCESS;
return EXIT_FAILURE;
}
static int data_size;
#define FAKE_HEADER_SIZE (PADDED_SIZE - data_size)
static int socfpgaimage_vrec_header(struct image_tool_params *params,
struct image_type_params *tparams)
{
struct stat sbuf;
if (params->datafile &&
stat(params->datafile, &sbuf) == 0 &&
sbuf.st_size <= MAX_INPUT_SIZE) {
data_size = sbuf.st_size;
tparams->header_size = FAKE_HEADER_SIZE;
}
return 0;
}
static void socfpgaimage_set_header(void *ptr, struct stat *sbuf, int ifd,
struct image_tool_params *params)
{
uint8_t *buf = (uint8_t *)ptr;
memmove(buf, buf + FAKE_HEADER_SIZE, data_size);
memset(buf + data_size, 0, FAKE_HEADER_SIZE);
sign_buffer(buf, 0, 0, data_size, 0);
}
U_BOOT_IMAGE_TYPE(
socfpgaimage,
"Altera SOCFPGA preloader support",
0,
(void *)buffer,
socfpgaimage_check_params,
socfpgaimage_verify_header,
socfpgaimage_print_header,
socfpgaimage_set_header,
NULL,
socfpgaimage_check_image_types,
NULL,
socfpgaimage_vrec_header
);
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