/trunk/kernel/generic/include/byteorder.h |
---|
41,7 → 41,7 |
((n & 0xff00) << 40) | |
((n & 0xff0000) << 24) | |
((n & 0xff000000LL) << 8) | |
((n & 0xff00000000LL) >>8) | |
((n & 0xff00000000LL) >> 8) | |
((n & 0xff0000000000LL) >> 24) | |
((n & 0xff000000000000LL) >> 40) | |
((n & 0xff00000000000000LL) >> 56); |
/trunk/kernel/generic/include/lib/rd.h |
---|
35,10 → 35,48 |
#ifndef KERN_RD_H_ |
#define KERN_RD_H_ |
#include <arch/types.h> |
#include <typedefs.h> |
extern bool init_rd(void * addr); |
/** |
* RAM disk version |
*/ |
#define RD_VERSION 0 |
/** |
* RAM disk magic number |
*/ |
#define RD_MAGIC_SIZE 4 |
#define RD_MAG0 'H' |
#define RD_MAG1 'O' |
#define RD_MAG2 'R' |
#define RD_MAG3 'D' |
/** |
* RAM disk data encoding types |
*/ |
#define RD_DATA_NONE 0 |
#define RD_DATA_LSB 1 /* Least significant byte first (little endian) */ |
#define RD_DATA_MSB 2 /* Most signigicant byte first (big endian) */ |
/** |
* RAM disk error return codes |
*/ |
#define RE_OK 0 /* No error */ |
#define RE_INVALID 1 /* Invalid RAM disk image */ |
#define RE_UNSUPPORTED 2 /* Non-supported image (e.g. wrong version) */ |
/** RAM disk header */ |
typedef struct { |
uint8_t magic[RD_MAGIC_SIZE]; |
uint8_t version; |
uint8_t data_type; |
uint32_t header_size; |
uint64_t data_size; |
} rd_header; |
extern int init_rd(rd_header * addr); |
#endif |
/** @} |
/trunk/kernel/generic/src/main/kinit.c |
---|
180,9 → 180,9 |
if (!ipc_phone_0) |
ipc_phone_0 = &utask->answerbox; |
} else { |
bool rd = init_rd((void *) init.tasks[i].addr); |
int rd = init_rd((void *) init.tasks[i].addr); |
if (!rd) |
if (rd != RE_OK) |
printf("Init binary %zd not used.\n", i); |
} |
} |
/trunk/kernel/generic/src/lib/rd.c |
---|
38,10 → 38,32 |
*/ |
#include <lib/rd.h> |
#include <arch/byteorder.h> |
bool init_rd(void * addr) |
int init_rd(rd_header * header) |
{ |
return false; |
/* Identify RAM disk */ |
if ((header->magic[0] != RD_MAG0) || (header->magic[1] != RD_MAG1) || (header->magic[2] != RD_MAG2) || (header->magic[3] != RD_MAG3)) |
return RE_INVALID; |
/* Identify version */ |
if (header->version != RD_VERSION) |
return RE_UNSUPPORTED; |
uint64_t hsize; |
switch (header->data_type) { |
case RD_DATA_LSB: |
hsize = uint64_t_le2host(header->header_size); |
break; |
// case RD_DATA_MSB: |
// hsize = uint64_t_be2host(header->header_size); |
// break; |
default: |
return RE_UNSUPPORTED; |
} |
return RE_OK; |
} |
/** @} |