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wolfBoot
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Minor fixes to block-based claim procedure

pull/50/head
Daniele Lacamera 2020-09-30 17:44:40 +02:00
parent 9d09f61b40
commit 7e1773199d
2 changed files with 66 additions and 38 deletions
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8
config/examples/stm32l5.config
View File

@ -21,9 +21,9 @@ DUALBANK_SWAP?=0
IMAGE_HEADER_SIZE?=256
WOLFBOOT_PARTITION_SIZE?=0x1F800
WOLFBOOT_SECTOR_SIZE?=0x800
WOLFBOOT_PARTITION_BOOT_ADDRESS?=0x8040000
WOLFBOOT_PARTITION_BOOT_ADDRESS?=0x08040000
WOLFBOOT_PARTITION_UPDATE_ADDRESS?=0x805F800
WOLFBOOT_PARTITION_SWAP_ADDRESS?=0x807F800
FLAGS_HOME=1
DISABLE_BACKUP=1
WOLFBOOT_PARTITION_SWAP_ADDRESS?=0x0807F000
FLAGS_HOME=0
DISABLE_BACKUP=0

94
hal/stm32l5.c
View File

@ -162,43 +162,24 @@
#define FLASH_SECBB2 ((volatile uint32_t *)(FLASH_BASE + 0xA0)) /* Array */
#define FLASH_SECBB_NREGS 4 /* Array length for the two above */
/* Register values */
#define FLASH_SR_EOP (1 << 0)
#define FLASH_SR_OPERR (1 << 1)
#define FLASH_SR_PROGERR (1 << 3)
#define FLASH_SR_WRPERR (1 << 4)
#define FLASH_SR_PGAERR (1 << 5)
#define FLASH_SR_SIZERR (1 << 6)
#define FLASH_SR_PGSERR (1 << 7)
#define FLASH_SR_BSY (1 << 16)
#define FLASH_CR_PG (1 << 0)
#define FLASH_CR_PER (1 << 1)
#define FLASH_CR_MER1 (1 << 2)
#define FLASH_CR_PNB_SHIFT 3
#define FLASH_CR_PNB_MASK 0x7F
#define FLASH_CR_BKER (1 << 11)
#define FLASH_CR_MER2 (1 << 15)
#define FLASH_CR_STRT (1 << 16)
#define FLASH_CR_OPTSTRT (1 << 17)
#define FLASH_CR_EOPIE (1 << 24)
#define FLASH_CR_ERRIE (1 << 25)
#define FLASH_CR_INV (1 << 29)
#define FLASH_CR_OBL_LAUNCH (1 << 27)
#define FLASH_CR_OPTLOCK (1 << 30)
#define FLASH_CR_LOCK (1 << 31)
#define FLASH_NS_BASE (0x40022000) //RM0438 - Table 4
#define FLASH_NS_KEYR (*(volatile uint32_t *)(FLASH_NS_BASE + 0x08))
#define FLASH_NS_OPTKEYR (*(volatile uint32_t *)(FLASH_NS_BASE + 0x10))
#define FLASH_NS_SR (*(volatile uint32_t *)(FLASH_NS_BASE + 0x20))
#define FLASH_NS_CR (*(volatile uint32_t *)(FLASH_NS_BASE + 0x28))
#else
/*Non-Secure*/
/* Non-Secure only */
#define FLASH_BASE (0x40022000) //RM0438 - Table 4
#define FLASH_KEYR (*(volatile uint32_t *)(FLASH_BASE + 0x08))
#define FLASH_OPTKEYR (*(volatile uint32_t *)(FLASH_BASE + 0x10))
#define FLASH_SR (*(volatile uint32_t *)(FLASH_BASE + 0x20))
#define FLASH_CR (*(volatile uint32_t *)(FLASH_BASE + 0x28))
#endif
/* Register values */
/* Register values (for both secure and non secure registers) */
#define FLASH_SR_EOP (1 << 0)
#define FLASH_SR_OPERR (1 << 1)
#define FLASH_SR_PROGERR (1 << 3)
@ -221,9 +202,10 @@
#define FLASH_CR_EOPIE (1 << 24)
#define FLASH_CR_ERRIE (1 << 25)
#define FLASH_CR_OBL_LAUNCH (1 << 27)
#define FLASH_CR_INV (1 << 29)
#define FLASH_CR_OPTLOCK (1 << 30)
#define FLASH_CR_LOCK (1 << 31)
#endif
#define FLASH_ACR (*(volatile uint32_t *)(FLASH_BASE + 0x00))
#define FLASH_ACR_LATENCY_MASK (0x0F)
@ -277,6 +259,11 @@ static RAMFUNCTION void flash_wait_complete(uint8_t bank)
{
while ((FLASH_SR & FLASH_SR_BSY) == FLASH_SR_BSY)
;
#if (defined (__ARM_FEATURE_CMSE) && (__ARM_FEATURE_CMSE == 3U))
while ((FLASH_NS_SR & FLASH_SR_BSY) == FLASH_SR_BSY)
;
#endif
}
static void RAMFUNCTION flash_clear_errors(uint8_t bank)
@ -288,10 +275,33 @@ static void RAMFUNCTION flash_clear_errors(uint8_t bank)
FLASH_SR_OPTWERR
#endif
) ;
#if (defined (__ARM_FEATURE_CMSE) && (__ARM_FEATURE_CMSE == 3U))
FLASH_NS_SR |= ( FLASH_SR_OPERR | FLASH_SR_PROGERR | FLASH_SR_WRPERR |FLASH_SR_PGAERR | FLASH_SR_SIZERR | FLASH_SR_PGSERR | FLASH_SR_OPTWERR);
#endif
}
#if defined (__ARM_FEATURE_CMSE) && (__ARM_FEATURE_CMSE == 3U) && (!defined(FLAGS_HOME) || !defined(DISABLE_BACKUP))
static void RAMFUNCTION hal_flash_nonsecure_unlock(void)
{
flash_wait_complete(0);
if ((FLASH_NS_CR & FLASH_CR_LOCK) != 0) {
FLASH_NS_KEYR = FLASH_KEY1;
DMB();
FLASH_NS_KEYR = FLASH_KEY2;
DMB();
while ((FLASH_NS_CR & FLASH_CR_LOCK) != 0)
;
}
}
static void RAMFUNCTION hal_flash_nonsecure_lock(void)
{
flash_wait_complete(0);
if ((FLASH_NS_CR & FLASH_CR_LOCK) == 0)
FLASH_NS_CR |= FLASH_CR_LOCK;
}
static void claim_nonsecure_area(uint32_t address, int len)
{
int page_n, reg_idx;
@ -311,9 +321,12 @@ static void claim_nonsecure_area(uint32_t address, int len)
reg_idx = page_n / 32;
int pos;
pos = page_n % 32;
hal_flash_nonsecure_unlock();
FLASH_SECBB2[reg_idx] |= ( 1 << pos);
ISB();
/* Erase claimed non-secure page */
flash_wait_complete(0);
hal_flash_nonsecure_lock();
/* Erase claimed non-secure page, in secure mode */
reg = FLASH_CR & (~((FLASH_CR_PNB_MASK << FLASH_CR_PNB_SHIFT) | FLASH_CR_PER | FLASH_CR_BKER | FLASH_CR_PG | FLASH_CR_MER1 | FLASH_CR_MER2));
FLASH_CR = reg | ((page_n << FLASH_CR_PNB_SHIFT) | FLASH_CR_PER | FLASH_CR_BKER);
DMB();
@ -345,21 +358,32 @@ int RAMFUNCTION hal_flash_write(uint32_t address, const uint8_t *data, int len)
int i = 0;
uint32_t *src, *dst;
uint32_t dword[2];
volatile uint32_t *sr, *cr;
cr = &FLASH_CR;
sr = &FLASH_SR;
flash_clear_errors(0);
src = (uint32_t *)data;
dst = (uint32_t *)address;
#if defined (__ARM_FEATURE_CMSE) && (__ARM_FEATURE_CMSE == 3U)
if (address >= FLASH_BANK2_BASE)
claim_nonsecure_area(address, len);
#endif
while (i < len) {
dword[0] = src[i >> 2];
dword[1] = src[(i >> 2) + 1];
FLASH_CR |= FLASH_CR_PG;
*cr |= FLASH_CR_PG;
dst[i >> 2] = dword[0];
ISB();
dst[(i >> 2) + 1] = dword[1];
flash_wait_complete(0);
FLASH_CR &= ~FLASH_CR_PG;
while ((*sr & FLASH_SR_EOP) == 0)
;
*sr |= FLASH_SR_EOP;
*cr &= ~FLASH_CR_PG;
i+=8;
}
@ -367,6 +391,9 @@ int RAMFUNCTION hal_flash_write(uint32_t address, const uint8_t *data, int len)
return 0;
}
void RAMFUNCTION hal_flash_unlock(void)
{
flash_wait_complete(0);
@ -378,9 +405,10 @@ void RAMFUNCTION hal_flash_unlock(void)
while ((FLASH_CR & FLASH_CR_LOCK) != 0)
;
}
}
void RAMFUNCTION hal_flash_lock(void)
{
flash_wait_complete(0);