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Move load_firmware() to separate file

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The idea is to share loading code between bootloaders and rolo().

Change-Id: I1656ed91946d7a05cb7c9fa7a16793c3c862a5cd
Reviewed-on: http://gerrit.rockbox.org/190
Reviewed-by: Marcin Bukat <marcin.bukat@gmail.com>
This commit is contained in:
Marcin Bukat 2012-03-04 15:34:29 +01:00
parent 46ea8bfe7c
commit 0b29691324
29 changed files with 727 additions and 608 deletions
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72
firmware/target/arm/rk27xx/rkw-loader.c
View file

@ -18,42 +18,22 @@
*
****************************************************************************/
#include <stdio.h>
#include "config.h"
#include "loader_strerror.h"
#include "rkw-loader.h"
#include "crc32-rkw.h"
#include "file.h"
#include "panic.h"
/* error strings sorted by number */
/* error 0 is empty */
static const char *err_str[] = {
"Loading OK",
"Can't open RKW file",
"Can't read RKW header",
"Invalid RKW magic number",
"RKW header CRC error",
"RKW file too big",
"RKW Load address mismatch",
"Bad model number",
"Error Reading File",
"RKW firmware CRC error"
};
const char *rkw_strerror(int8_t errno)
{
if ((uint8_t)-errno >= sizeof(err_str)/sizeof(err_str[0]) || errno > 0)
return "Unknown error";
return err_str[-errno];
}
/* loosely based on load_firmware()
* on success we return size loaded image
* on success we return size of loaded image
* on error we return negative value which can be deciphered by means
* of rkw_strerror() function
*/
int load_rkw(unsigned char* buf, const char* filename, int buffer_size)
int load_rkw(unsigned char* buf, const char* firmware, int buffer_size)
{
char filename[MAX_PATH];
int fd;
int rc;
int len;
@ -61,22 +41,42 @@ int load_rkw(unsigned char* buf, const char* filename, int buffer_size)
uint32_t crc, fw_crc;
struct rkw_header_t rkw_info;
fd = open(filename, O_RDONLY);
/* only filename passed */
if (firmware[0] != '/')
{
/* First check in BOOTDIR */
snprintf(filename, sizeof(filename), BOOTDIR "/%s",firmware);
if(fd < 0)
return -1;
fd = open(filename, O_RDONLY);
if(fd < 0)
{
/* Check in root dir */
snprintf(filename, sizeof(filename),"/%s",firmware);
fd = open(filename, O_RDONLY);
if (fd < 0)
return EFILE_NOT_FOUND;
}
}
else
{
/* full path passed */
fd = open(firmware, O_RDONLY);
if (fd < 0)
return EFILE_NOT_FOUND;
}
rc = read(fd, &rkw_info, sizeof(rkw_info));
if (rc < (int)sizeof(rkw_info))
{
ret = -2;
ret = EREAD_HEADER_FAILED;
goto end;
}
/* check if RKW is valid */
if (rkw_info.magic_number != RKLD_MAGIC)
{
ret = -3;
ret = EINVALID_FORMAT;
goto end;
}
@ -86,7 +86,7 @@ int load_rkw(unsigned char* buf, const char* filename, int buffer_size)
crc = crc32_rkw((uint8_t *)&rkw_info, sizeof(rkw_info)-sizeof(uint32_t));
if (rkw_info.crc != crc)
{
ret = -4;
ret = EBAD_HEADER_CHKSUM;
goto end;
}
}
@ -95,14 +95,14 @@ int load_rkw(unsigned char* buf, const char* filename, int buffer_size)
len = rkw_info.load_limit - rkw_info.load_address;
if (len > buffer_size)
{
ret = -5;
ret = EFILE_TOO_BIG;
goto end;
}
/* check load address - we support loading only at 0x60000000 */
if (rkw_info.load_address != 0x60000000)
{
ret = -6;
ret = EINVALID_LOAD_ADDR;
goto end;
}
@ -112,7 +112,7 @@ int load_rkw(unsigned char* buf, const char* filename, int buffer_size)
*/
if (rkw_info.reserved0 != 0 && rkw_info.reserved0 != MODEL_NUMBER)
{
ret = -7;
ret = EBAD_MODEL;
goto end;
}
@ -124,7 +124,7 @@ int load_rkw(unsigned char* buf, const char* filename, int buffer_size)
if(rc < len)
{
ret = -8;
ret = EREAD_IMAGE_FAILED;
goto end;
}
@ -136,7 +136,7 @@ int load_rkw(unsigned char* buf, const char* filename, int buffer_size)
if (fw_crc != crc)
{
ret = -9;
ret = EBAD_CHKSUM;
goto end;
}
}