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flash/stm32l4x: fix segmentation fault with HLA adapters and STM32WLx devices 

CPU2 (Cortex-M0+) is supported only with non-hla adapters because it is on AP1.
Using HLA adapters armv7m.debug_ap is null, and checking ap_num triggers
a segfault.

Change-Id: I501f5b69e629aa8d2836b5194063d74d5bfddb12
Signed-off-by: Tarek BOCHKATI <tarek.bouchkati@gmail.com>
Fixes: https://github.com/STMicroelectronics/OpenOCD/issues/6
Reviewed-on: https://review.openocd.org/c/openocd/+/6535
Tested-by: jenkins
Reviewed-by: Oleksij Rempel <linux@rempel-privat.de>
This commit is contained in:
Tarek BOCHKATI 2021-08-29 16:33:55 +01:00 committed by Oleksij Rempel
parent f24a283ac7
commit cdb6ea4f9f
1 changed files with 8 additions and 2 deletions
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10
src/flash/nor/stm32l4x.c
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@ -1646,7 +1646,10 @@ static int stm32l4_read_idcode(struct flash_bank *bank, uint32_t *id)
struct cortex_m_common *cortex_m = target_to_cm(bank->target);
if (cortex_m->core_info->partno == CORTEX_M0P_PARTNO && cortex_m->armv7m.debug_ap->ap_num == 1) {
/* CPU2 (Cortex-M0+) is supported only with non-hla adapters because it is on AP1.
* Using HLA adapters armv7m.debug_ap is null, and checking ap_num triggers a segfault */
if (cortex_m->core_info->partno == CORTEX_M0P_PARTNO &&
cortex_m->armv7m.debug_ap && cortex_m->armv7m.debug_ap->ap_num == 1) {
uint32_t uid64_ids;
/* UID64 is contains
@ -1954,7 +1957,10 @@ static int stm32l4_probe(struct flash_bank *bank)
page_size_kb = 2;
num_pages = flash_size_kb / page_size_kb;
stm32l4_info->bank1_sectors = num_pages;
if (armv7m->debug_ap->ap_num == 1)
/* CPU2 (Cortex-M0+) is supported only with non-hla adapters because it is on AP1.
* Using HLA adapters armv7m->debug_ap is null, and checking ap_num triggers a segfault */
if (armv7m->debug_ap && armv7m->debug_ap->ap_num == 1)
stm32l4_info->flash_regs = stm32wl_cpu2_flash_regs;
break;
default: