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fix meizu_dfu endianness issues

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@18508 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Frank Gevaerts 2008-09-13 16:23:01 +00:00
parent 5b4df4a72e
commit c487c01d46
1 changed files with 20 additions and 2 deletions
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22
utils/meizu_dfu/meizu_dfu.c
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@ -16,6 +16,16 @@
#include <usb.h> #include <usb.h>
#define bswap_16(value) \
((((value) & 0xff) << 8) | ((value) >> 8))
#define bswap_32(value) \
(((uint32_t)bswap_16((uint16_t)((value) & 0xffff)) << 16) | \
(uint32_t)bswap_16((uint16_t)((value) >> 16)))
#define host_to_le32(_x) bswap_32(htonl(_x))
#define host_to_le16(_x) bswap_16(htons(_x))
void usage() void usage()
{ {
fprintf(stderr, "usage: meizu_dfu m3 <SST39VF800.dfu> <M3.EBN>\n"); fprintf(stderr, "usage: meizu_dfu m3 <SST39VF800.dfu> <M3.EBN>\n");
@ -82,6 +92,7 @@ void init_img(image_data_t *img, const char *filename, image_attr_t *attr)
struct stat statbuf; struct stat statbuf;
char buf[BLOCK_SIZE]; char buf[BLOCK_SIZE];
uint32_t dfu_crc; uint32_t dfu_crc;
uint32_t le_len;
printf("Reading %s...", filename); printf("Reading %s...", filename);
@ -100,8 +111,15 @@ void init_img(image_data_t *img, const char *filename, image_attr_t *attr)
} }
close(fd); close(fd);
le_len = host_to_le32(img->len);
// patch the data size in after the signature // patch the data size in after the signature
memcpy(img->data + attr->pre_off + 4, &img->len, 4); memcpy(img->data + attr->pre_off + 4, &le_len, 4);
/* convert to little endian */
attr->suf_dev = host_to_le16(attr->suf_dev);
attr->suf_prod = host_to_le16(attr->suf_prod);
attr->suf_ven = host_to_le16(attr->suf_ven);
attr->suf_dfu = host_to_le16(attr->suf_dfu);
// append the suffix (excluding the checksum) // append the suffix (excluding the checksum)
memcpy(img->data + len, &attr->suf_dev, 2); memcpy(img->data + len, &attr->suf_dev, 2);
@ -111,7 +129,7 @@ void init_img(image_data_t *img, const char *filename, image_attr_t *attr)
memcpy(img->data + len + 8, &attr->suf_sig, 3); memcpy(img->data + len + 8, &attr->suf_sig, 3);
memcpy(img->data + len + 11, &attr->suf_len, 1); memcpy(img->data + len + 11, &attr->suf_len, 1);
dfu_crc = crc32(img->data, len + 12, DFU_CRC_POLY, DFU_INIT_CRC); dfu_crc = host_to_le32(crc32(img->data, len + 12, DFU_CRC_POLY, DFU_INIT_CRC));
memcpy(img->data + len + 12, &dfu_crc, 4); memcpy(img->data + len + 12, &dfu_crc, 4);
#if 0 #if 0