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Cater for ECC failures in EFL wear-leveling. (#19749)

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Co-authored-by: Sergey Vlasov <sigprof@gmail.com>
This commit is contained in:
Nick Brassel 2023-11-26 22:59:38 +11:00 • committed by GitHub
parent 3ef06aa732
commit f96a7bbd63
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3 changed files with 78 additions and 2 deletions
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32
platforms/chibios/drivers/wear_leveling/wear_leveling_efl.c
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@ -17,6 +17,9 @@ static flash_sector_t first_sector = UINT16_MAX;
static flash_sector_t sector_count = UINT16_MAX;
static BaseFlash * flash;
static volatile bool is_issuing_read = false;
static volatile bool ecc_error_occurred = false;
// "Automatic" detection of the flash size -- ideally ChibiOS would have this already, but alas, it doesn't.
static inline uint32_t detect_flash_size(void) {
#if defined(WEAR_LEVELING_EFL_FLASH_SIZE)
@ -131,11 +134,38 @@ bool backing_store_lock(void) {
return true;
}
static backing_store_int_t backing_store_safe_read_from_location(backing_store_int_t *loc) {
backing_store_int_t value;
is_issuing_read = true;
ecc_error_occurred = false;
value = ~(*loc);
is_issuing_read = false;
return value;
}
bool backing_store_read(uint32_t address, backing_store_int_t *value) {
uint32_t offset = (base_offset + address);
backing_store_int_t *loc = (backing_store_int_t *)flashGetOffsetAddress(flash, offset);
*value = ~(*loc);
backing_store_int_t tmp = backing_store_safe_read_from_location(loc);
if (ecc_error_occurred) {
bs_dprintf("Failed to read from backing store, ECC error detected\n");
ecc_error_occurred = false;
*value = 0;
return false;
}
*value = tmp;
bs_dprintf("Read ");
wl_dump(offset, value, sizeof(backing_store_int_t));
return true;
}
bool backing_store_allow_ecc_errors(void) {
return is_issuing_read;
}
void backing_store_signal_ecc_error(void) {
ecc_error_occurred = true;
}