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stm32f1: Add F1 XL with dual bank handling,

This commit is contained in:
Uwe Bonnes 2020-06-25 13:44:23 +02:00 committed by UweBonnes
parent fc6ca5bc06
commit 661f78033a
1 changed files with 102 additions and 31 deletions
src/target
stm32f1.c

133
src/target/stm32f1.c
View File

@ -65,6 +65,9 @@ static int stm32f1_flash_write(struct target_flash *f,
#define FLASH_OBR (FPEC_BASE+0x1C)
#define FLASH_WRPR (FPEC_BASE+0x20)
#define FLASH_BANK2_OFFSET 0x40
#define FLASH_BANK_SPLIT 0x08080000
#define FLASH_CR_OBL_LAUNCH (1<<13)
#define FLASH_CR_OPTWRE (1 << 9)
#define FLASH_CR_STRT (1 << 6)
@ -124,7 +127,7 @@ bool stm32f1_probe(target *t)
case 0x420: /* Value Line, Low-/Medium density */
target_add_ram(t, 0x20000000, 0x5000);
stm32f1_add_flash(t, 0x8000000, 0x20000, 0x400);
target_add_commands(t, stm32f1_cmd_list, "STM32 LD/MD");
target_add_commands(t, stm32f1_cmd_list, "STM32 LD/MD/VL-LD/VL-MD");
/* Test for non-genuine parts with Core rev 2*/
ADIv5_AP_t *ap = cortexm_ap(t);
if ((ap->idr >> 28) > 1) {
@ -139,11 +142,19 @@ bool stm32f1_probe(target *t)
case 0x414: /* High density */
case 0x418: /* Connectivity Line */
case 0x428: /* Value Line, High Density */
t->driver = "STM32F1 high density";
t->driver = "STM32F1 VL density";
target_add_ram(t, 0x20000000, 0x10000);
stm32f1_add_flash(t, 0x8000000, 0x80000, 0x800);
target_add_commands(t, stm32f1_cmd_list, "STM32 HD/CL");
target_add_commands(t, stm32f1_cmd_list, "STM32 HF/CL/VL-HD");
return true;
case 0x430: /* XL-density */
t->driver = "STM32F1 XL density";
target_add_ram(t, 0x20000000, 0x18000);
stm32f1_add_flash(t, 0x8000000, 0x80000, 0x800);
stm32f1_add_flash(t, 0x8080000, 0x80000, 0x800);
target_add_commands(t, stm32f1_cmd_list, "STM32 XL/VL-XL");
return true;
case 0x438: /* STM32F303x6/8 and STM32F328 */
case 0x422: /* STM32F30x */
case 0x446: /* STM32F303xD/E and STM32F398xE */
@ -192,29 +203,37 @@ bool stm32f1_probe(target *t)
return true;
}
static void stm32f1_flash_unlock(target *t)
static void stm32f1_flash_unlock(target *t, uint32_t bank_offset)
{
target_mem_write32(t, FLASH_KEYR, KEY1);
target_mem_write32(t, FLASH_KEYR, KEY2);
target_mem_write32(t, FLASH_KEYR + bank_offset, KEY1);
target_mem_write32(t, FLASH_KEYR + bank_offset, KEY2);
}
static int stm32f1_flash_erase(struct target_flash *f,
target_addr addr, size_t len)
{
target *t = f->t;
target_addr end = addr + len - 1;
target_addr start = addr;
stm32f1_flash_unlock(t);
if ((t->idcode == 0x430) && (end >= FLASH_BANK_SPLIT))
stm32f1_flash_unlock(t, FLASH_BANK2_OFFSET);
if (addr < FLASH_BANK_SPLIT)
stm32f1_flash_unlock(t, 0);
while(len) {
uint32_t bank_offset = 0;
if (addr >= FLASH_BANK_SPLIT)
bank_offset = FLASH_BANK2_OFFSET;
/* Flash page erase instruction */
target_mem_write32(t, FLASH_CR, FLASH_CR_PER);
target_mem_write32(t, FLASH_CR + bank_offset, FLASH_CR_PER);
/* write address to FMA */
target_mem_write32(t, FLASH_AR, addr);
target_mem_write32(t, FLASH_AR + bank_offset, addr);
/* Flash page erase start instruction */
target_mem_write32(t, FLASH_CR, FLASH_CR_STRT | FLASH_CR_PER);
target_mem_write32(t, FLASH_CR + bank_offset,
FLASH_CR_STRT | FLASH_CR_PER);
/* Read FLASH_SR to poll for BSY bit */
while (target_mem_read32(t, FLASH_SR) & FLASH_SR_BSY)
while (target_mem_read32(t, FLASH_SR + bank_offset) & FLASH_SR_BSY)
if(target_check_error(t)) {
DEBUG_WARN("stm32f1 flash erase: comm error\n");
return -1;
@ -227,12 +246,20 @@ static int stm32f1_flash_erase(struct target_flash *f,
}
/* Check for error */
uint32_t sr = target_mem_read32(t, FLASH_SR);
if ((sr & SR_ERROR_MASK) || !(sr & SR_EOP)) {
DEBUG_INFO("stm32f1 flash erase error 0x%" PRIx32 "\n", sr);
return -1;
if (start < FLASH_BANK_SPLIT) {
uint32_t sr = target_mem_read32(t, FLASH_SR);
if ((sr & SR_ERROR_MASK) || !(sr & SR_EOP)) {
DEBUG_INFO("stm32f1 flash erase error 0x%" PRIx32 "\n", sr);
return -1;
}
}
if ((t->idcode == 0x430) && (end >= FLASH_BANK_SPLIT)) {
uint32_t sr = target_mem_read32(t, FLASH_SR + FLASH_BANK2_OFFSET);
if ((sr & SR_ERROR_MASK) || !(sr & SR_EOP)) {
DEBUG_INFO("stm32f1 bank 2 flash erase error 0x%" PRIx32 "\n", sr);
return -1;
}
}
return 0;
}
@ -241,21 +268,49 @@ static int stm32f1_flash_write(struct target_flash *f,
{
target *t = f->t;
uint32_t sr;
target_mem_write32(t, FLASH_CR, FLASH_CR_PG);
cortexm_mem_write_sized(t, dest, src, len, ALIGN_HALFWORD);
/* Read FLASH_SR to poll for BSY bit */
/* Wait for completion or an error */
do {
sr = target_mem_read32(t, FLASH_SR);
if(target_check_error(t)) {
DEBUG_WARN("stm32f1 flash write: comm error\n");
size_t length = 0;
if (dest < FLASH_BANK_SPLIT) {
if ((dest + len - 1) >= FLASH_BANK_SPLIT)
length = FLASH_BANK_SPLIT - dest;
else
length = len;
target_mem_write32(t, FLASH_CR, FLASH_CR_PG);
cortexm_mem_write_sized(t, dest, src, length, ALIGN_HALFWORD);
/* Read FLASH_SR to poll for BSY bit */
/* Wait for completion or an error */
do {
sr = target_mem_read32(t, FLASH_SR);
if(target_check_error(t)) {
DEBUG_WARN("stm32f1 flash write: comm error\n");
return -1;
}
} while (sr & FLASH_SR_BSY);
if (sr & SR_ERROR_MASK) {
DEBUG_WARN("stm32f1 flash write error 0x%" PRIx32 "\n", sr);
return -1;
}
} while (sr & FLASH_SR_BSY);
dest += length;
src += length;
}
length = len - length;
if ((t->idcode == 0x430) && length) { /* Write on bank 2 */
target_mem_write32(t, FLASH_CR + FLASH_BANK2_OFFSET, FLASH_CR_PG);
cortexm_mem_write_sized(t, dest, src, length, ALIGN_HALFWORD);
/* Read FLASH_SR to poll for BSY bit */
/* Wait for completion or an error */
do {
sr = target_mem_read32(t, FLASH_SR + FLASH_BANK2_OFFSET);
if(target_check_error(t)) {
DEBUG_WARN("stm32f1 flash bank2 write: comm error\n");
return -1;
}
} while (sr & FLASH_SR_BSY);
if (sr & SR_ERROR_MASK) {
DEBUG_WARN("stm32f1 flash write error 0x%" PRIx32 "\n", sr);
return -1;
if (sr & SR_ERROR_MASK) {
DEBUG_WARN("stm32f1 flash bank2 write error 0x%" PRIx32 "\n", sr);
return -1;
}
}
return 0;
}
@ -264,7 +319,7 @@ static bool stm32f1_cmd_erase_mass(target *t, int argc, const char **argv)
{
(void)argc;
(void)argv;
stm32f1_flash_unlock(t);
stm32f1_flash_unlock(t, 0);
/* Flash mass erase start instruction */
target_mem_write32(t, FLASH_CR, FLASH_CR_MER);
@ -279,7 +334,23 @@ static bool stm32f1_cmd_erase_mass(target *t, int argc, const char **argv)
uint16_t sr = target_mem_read32(t, FLASH_SR);
if ((sr & SR_ERROR_MASK) || !(sr & SR_EOP))
return false;
if (t->idcode == 0x430) {
stm32f1_flash_unlock(t, FLASH_BANK2_OFFSET);
/* Flash mass erase start instruction on bank 2*/
target_mem_write32(t, FLASH_CR + FLASH_BANK2_OFFSET, FLASH_CR_MER);
target_mem_write32(t, FLASH_CR + FLASH_BANK2_OFFSET,
FLASH_CR_STRT | FLASH_CR_MER);
/* Read FLASH_SR to poll for BSY bit */
while (target_mem_read32(t, FLASH_SR + FLASH_BANK2_OFFSET) & FLASH_SR_BSY)
if(target_check_error(t))
return false;
/* Check for error */
uint16_t sr = target_mem_read32(t, FLASH_SR + FLASH_BANK2_OFFSET);
if ((sr & SR_ERROR_MASK) || !(sr & SR_EOP))
return false;
}
return true;
}
@ -359,7 +430,7 @@ static bool stm32f1_cmd_option(target *t, int argc, const char **argv)
default: flash_obp_rdp_key = FLASH_OBP_RDP_KEY;
}
rdprt = target_mem_read32(t, FLASH_OBR) & FLASH_OBR_RDPRT;
stm32f1_flash_unlock(t);
stm32f1_flash_unlock(t, 0);
target_mem_write32(t, FLASH_OPTKEYR, KEY1);
target_mem_write32(t, FLASH_OPTKEYR, KEY2);