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Code Issues Releases Wiki Activity

add TC4 EVER retry

pull/890/head
Brett Nicholas 2026-09-14 10:40:31 -06:00
parent 6d652d444f
commit ade42b51fa
1 changed files with 21 additions and 5 deletions
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26
hal/aurix_tc4xx.c
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@ -133,6 +133,11 @@ _Static_assert(WOLFBOOT_WOLFHSM_CLIENT_ID == TCHSM_HSMHOST_CLIENT_APP0,
#define TC4_ERR_EVER (1u << 7)
#define TC4_CLRERR_ALL (0xF7u) /* OPER (bit16) has no clear bit */
/* Erase attempts per sector. Infineon AN0019 says to repeat an erase that
* reports EVER at least once, since slow cells may need more erase time.
* A second EVER means the sector is bad. */
#define TC4_ERASE_ATTEMPTS (2u)
/* Bounded wait limits for flash commands */
#define TC4_BUSY_SPIN_LIMIT (50000000u)
#define TC4_REQDONE_SPIN_LIMIT (1000000u)
@ -219,14 +224,25 @@ static int RAMFUNCTION flashIsPageErased(uint32_t pageAddr)
}
/* Erase one 16KB logical sector. Sectors are erased one at a time due to issues
* with multi-sector erases leaving the busy flag set. Returns 0 on success. */
* with multi-sector erases leaving the busy flag set. The erase command runs
* its own erase verify and reports EVER if the sector did not fully erase. The
* erase is retried on EVER. Returns 0 on success. */
static int RAMFUNCTION flashEraseSector(uint32_t sectorAddr)
{
uint32_t err = flashCommand(sectorAddr, 1u, 0x80u, 0x50u);
if ((err & TC4_ERR_OPFAIL_MASK) != 0u) {
return -1;
uint32_t attempt;
for (attempt = 0; attempt < TC4_ERASE_ATTEMPTS; attempt++) {
uint32_t err = flashCommand(sectorAddr, 1u, 0x80u, 0x50u);
if ((err & TC4_ERR_OPFAIL_MASK) != 0u) {
/* Sequence, protection, address or timeout: not retryable */
return -1;
}
if ((err & TC4_ERR_EVER) == 0u) {
return 0;
}
}
return 0;
/* EVER persisted: the sector is not reliably erased */
return -1;
}
/* Program a naturally aligned group of pages (one page or one burst) that