int system_set_scratchpad(uint32_t value)
{
FILE *f = get_persistent_storage("scratchpad", "w");
fprintf(f, "%lu", value);
release_persistent_storage(f);
return EC_SUCCESS;
}
static void save_reset_flags(uint32_t flags)
{
FILE *f = get_persistent_storage("reset_flags", "wb");
ASSERT(f != NULL);
ASSERT(fwrite(&flags, sizeof(flags), 1, f) == 1);
release_persistent_storage(f);
}
static void set_image_copy(uint32_t copy)
{
FILE *f = get_persistent_storage("image_copy", "wb");
ASSERT(f != NULL);
ASSERT(fwrite(©, sizeof(copy), 1, f) == 1);
release_persistent_storage(f);
}
static void save_time(timestamp_t t)
{
FILE *f = get_persistent_storage("time", "wb");
ASSERT(f != NULL);
ASSERT(fwrite(&t, sizeof(t), 1, f) == 1);
release_persistent_storage(f);
}
static void flash_set_persistent(void)
{
FILE *f = get_persistent_storage("flash", "wb");
int sz;
ASSERT(f != NULL);
sz = fwrite(__host_flash, sizeof(__host_flash), 1, f);
ASSERT(sz == 1);
release_persistent_storage(f);
}
static void ramdata_set_persistent(void)
{
FILE *f = get_persistent_storage("ramdata", "wb");
int sz;
ASSERT(f != NULL);
sz = fwrite(__ram_data, sizeof(__ram_data), 1, f);
ASSERT(sz == 1);
release_persistent_storage(f);
}
static int load_time(timestamp_t *t)
{
FILE *f = get_persistent_storage("time", "rb");
if (f == NULL)
return 0;
fread(t, sizeof(*t), 1, f);
release_persistent_storage(f);
remove_persistent_storage("time");
return 1;
}
static uint32_t load_reset_flags(void)
{
FILE *f = get_persistent_storage("reset_flags", "rb");
uint32_t ret;
if (f == NULL)
return RESET_FLAG_POWER_ON;
fread(&ret, sizeof(ret), 1, f);
release_persistent_storage(f);
remove_persistent_storage("reset_flags");
return ret;
}
static uint32_t get_image_copy(void)
{
FILE *f = get_persistent_storage("image_copy", "rb");
uint32_t ret;
if (f == NULL)
return SYSTEM_IMAGE_UNKNOWN;
fread(&ret, sizeof(ret), 1, f);
release_persistent_storage(f);
remove_persistent_storage("image_copy");
return ret;
}
static void flash_get_persistent(void)
{
FILE *f = get_persistent_storage("flash", "rb");
if (f == NULL) {
fprintf(stderr,
"No flash storage found. Initializing to 0xff.\n");
memset(__host_flash, 0xff, sizeof(__host_flash));
return;
}
fread(__host_flash, sizeof(__host_flash), 1, f);
release_persistent_storage(f);
}
uint32_t system_get_scratchpad(void)
{
FILE *f = get_persistent_storage("scratchpad", "r");
uint32_t value;
int success;
if (f == NULL)
return 0;
success = fscanf(f, "%lu", &value);
release_persistent_storage(f);
if (success)
return value;
else
return 0;
}
static void ramdata_get_persistent(void)
{
FILE *f = get_persistent_storage("ramdata", "rb");
if (f == NULL) {
fprintf(stderr,
"No RAM data found. Initializing to 0x00.\n");
memset(__ram_data, 0, sizeof(__ram_data));
return;
}
fread(__ram_data, sizeof(__ram_data), 1, f);
release_persistent_storage(f);
/*
* Assumes RAM data doesn't preserve across reboot except for sysjump.
* Clear persistent data once it's read.
*/
remove_persistent_storage("ramdata");
}
