M-Labs/artiq
2
0
Fork 2
mirror of https://github.com/m-labs/artiq.git synced 2024-12-28 20:53:35 +08:00
Code Issues Projects Releases Wiki Activity

flash_storage: cleanup and compile

Browse Source
This commit is contained in:
Sebastien Bourdeauducq 2015-04-27 17:48:31 +08:00
parent 13119eb9ee
commit bd7a031466
3 changed files with 37 additions and 23 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
soc/runtime/Makefile
View File

@ -1,6 +1,6 @@
include $(MSCDIR)/software/common.mak
OBJECTS := isr.o elf_loader.o services.o session.o log.o test_mode.o kloader.o main.o
OBJECTS := isr.o flash_storage.o elf_loader.o services.o session.o log.o test_mode.o kloader.o main.o
OBJECTS_KSUPPORT := exception_jmp.o exceptions.o rtio.o dds.o
# NOTE: this does not handle dependencies well. Run "make clean"

53
soc/runtime/flash_storage.c
View File

@ -2,21 +2,24 @@
* Yann Sionneau <ys@m-labs.hk>, 2015
*/
#include <spiflash.h>
#include <string.h>
#include <generated/flash_geometry.h>
#include <generated/mem.h>
#include <system.h>
#include <spiflash.h>
#include <generated/mem.h>
#include <generated/csr.h>
#include "flash_storage.h"
#define STORAGE_ADDRESS ((char *)(FLASH_BOOT_ADDRESS + 128*1024))
#define STORAGE_SIZE SECTOR_SIZE
#if (defined CSR_SPIFLASH_BASE && defined SPIFLASH_PAGE_SIZE)
#define STORAGE_ADDRESS ((char *)(FLASH_BOOT_ADDRESS + 256*1024))
#define STORAGE_SIZE SPIFLASH_SECTOR_SIZE
#define END_MARKER (0xFFFFFFFF)
#define min(a, b) (a>b?b:a)
#define max(a, b) (a>b?a:b)
#define goto_next_record(buff,addr) do { \
#define goto_next_record(buff, addr) do { \
unsigned int key_size = strlen(&buff[addr])+1; \
if (key_size % 4) \
key_size += 4 - (key_size % 4); \
@ -25,15 +28,13 @@
if (buflen % 4) \
buflen += 4 - (buflen % 4); \
addr += key_size + sizeof(int) + buflen; \
} while (0);
} while (0)
union seek {
unsigned int integer;
char bytes[4];
};
char sector_buff[STORAGE_SIZE];
static void write_at_offset(char *key, void *buffer, int buflen, unsigned int sector_offset);
static char key_exists(char *buff, char *key, char *end);
static char check_for_duplicates(char *buff);
@ -43,7 +44,8 @@ static char key_exists(char *buff, char *key, char *end)
{
unsigned int addr;
for(addr = 0; &buff[addr] < end && *(unsigned int*)&buff[addr] != END_MARKER;) {
addr = 0;
while(&buff[addr] < end && *(unsigned int*)&buff[addr] != END_MARKER) {
if(strcmp(&buff[addr], key) == 0)
return 1;
goto_next_record(buff, addr);
@ -56,7 +58,8 @@ static char check_for_duplicates(char *buff)
unsigned int addr;
char *key_name;
for(addr = 0; addr < STORAGE_SIZE && *(unsigned int *)&buff[addr] != END_MARKER;) {
addr = 0;
while(addr < STORAGE_SIZE && *(unsigned int *)&buff[addr] != END_MARKER) {
key_name = &buff[addr];
goto_next_record(buff, addr);
if(key_exists(&buff[addr], key_name, &buff[STORAGE_SIZE]))
@ -70,12 +73,12 @@ static unsigned int try_to_flush_duplicates(void)
{
unsigned int addr, i, key_size, buflen;
char *key_name, *last_duplicate;
char sector_buff[STORAGE_SIZE];
union seek *seeker = (union seek *)sector_buff;
memcpy(sector_buff, STORAGE_ADDRESS, STORAGE_SIZE);
if(check_for_duplicates(sector_buff)) {
erase_flash_sector((unsigned int)STORAGE_ADDRESS);
flush_cpu_dcache();
fs_erase();
for(addr = 0; addr < STORAGE_SIZE && seeker[addr >> 2].integer != END_MARKER;) {
key_name = &sector_buff[addr];
key_size = strlen(key_name)+1;
@ -89,7 +92,7 @@ static unsigned int try_to_flush_duplicates(void)
last_duplicate = &sector_buff[i];
}
buflen = *(unsigned int *)&last_duplicate[key_size];
write(key_name, &last_duplicate[key_size+sizeof(int)], buflen);
fs_write(key_name, &last_duplicate[key_size+sizeof(int)], buflen);
}
goto_next_record(sector_buff, addr);
}
@ -115,10 +118,11 @@ static void write_at_offset(char *key, void *buffer, int buflen, unsigned int se
write_to_flash(sector_offset+key_len+key_len_alignment, (unsigned char *)&buflen, sizeof(buflen));
write_to_flash(sector_offset+key_len+key_len_alignment+sizeof(buflen), buffer, buflen);
write_to_flash(sector_offset+key_len+key_len_alignment+sizeof(buflen)+buflen, padding, buflen_alignment);
flush_cpu_dcache();
}
void write(char *key, void *buffer, unsigned int buflen)
void fs_write(char *key, void *buffer, unsigned int buflen)
{
char *addr;
unsigned int key_size = strlen(key)+1;
@ -127,7 +131,6 @@ void write(char *key, void *buffer, unsigned int buflen)
for(addr = STORAGE_ADDRESS; addr < STORAGE_ADDRESS + STORAGE_SIZE - record_size; addr += 4) {
if(*(unsigned int *)addr == END_MARKER) {
write_at_offset(key, buffer, buflen, (unsigned int)addr);
flush_cpu_dcache();
break;
}
}
@ -139,21 +142,28 @@ void write(char *key, void *buffer, unsigned int buflen)
for(addr = STORAGE_ADDRESS; addr < STORAGE_ADDRESS + STORAGE_SIZE - record_size; addr += 4) {
if(*(unsigned int *)addr == END_MARKER) {
write_at_offset(key, buffer, buflen, (unsigned int)addr);
flush_cpu_dcache();
break;
}
}
}
}
unsigned int read(char *key, void *buffer, unsigned int buflen, unsigned int *remain)
void fs_erase(void)
{
erase_flash_sector((unsigned int)STORAGE_ADDRESS);
flush_cpu_dcache();
}
unsigned int fs_read(char *key, void *buffer, unsigned int buflen, unsigned int *remain)
{
unsigned int read_length = 0;
char *addr;
for(addr = STORAGE_ADDRESS; addr < (STORAGE_ADDRESS + STORAGE_SIZE) && (*addr != END_MARKER);) {
addr = STORAGE_ADDRESS;
while(addr < (STORAGE_ADDRESS + STORAGE_SIZE) && (*addr != END_MARKER)) {
unsigned int key_len, value_len;
char *key_addr = addr;
key_len = strlen(addr) + 1;
if(key_len % 4)
key_len += 4 - (key_len % 4);
@ -163,7 +173,8 @@ unsigned int read(char *key, void *buffer, unsigned int buflen, unsigned int *re
if(strcmp(key_addr, key) == 0) {
memcpy(buffer, addr, min(value_len, buflen));
read_length = min(value_len, buflen);
*remain = max(0, (int)value_len - (int)buflen);
if(remain)
*remain = max(0, (int)value_len - (int)buflen);
}
addr += value_len;
if((int)addr % 4)
@ -171,3 +182,5 @@ unsigned int read(char *key, void *buffer, unsigned int buflen, unsigned int *re
}
return read_length;
}
#endif /* CSR_SPIFLASH_BASE && SPIFLASH_PAGE_SIZE */

5
soc/runtime/flash_storage.h
View File

@ -5,7 +5,8 @@
#ifndef __FLASH_STORAGE_H
#define __FLASH_STORAGE_H
void write(char *key, void *buffer, unsigned int buflen);
unsigned int read(char *key, void *buffer, unsigned int buflen, unsigned int *remain);
void fs_write(char *key, void *buffer, unsigned int buflen);
unsigned int fs_read(char *key, void *buffer, unsigned int buflen, unsigned int *remain);
void fs_erase(void);
#endif /* __FLASH_STORAGE_H */