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fix(esp_hw_support): run ESP32-P4 PMA programming from IRAM

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The bootloader locks PMA entries on core 0 only (PMA is per-hart), so
core 1 applies its PMA configuration with effective writes. Executing
that from flash momentarily makes the flash aperture non-cacheable
while reprogramming its entry, which executes ciphertext with flash
encryption enabled (illegal instruction -> CPU lockup).
This commit is contained in:
Mahavir Jain
2026-08-28 18:06:56 +05:30
committed by harshal.patil
parent 939043ea83
commit e7499410fa
1 changed files with 1 additions and 1 deletions
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components/esp_hw_support/port/esp32p4/cpu_region_protect.c
+1 -1
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@@ -38,7 +38,7 @@
#define ALIGN_DOWN_TO_MMU_PAGE_SIZE(addr) ((addr) & ~((SOC_MMU_PAGE_SIZE) - 1))
#define ALIGN_UP(addr, align) (((addr) + (align) - 1) & ~((align) - 1))
static void esp_cpu_configure_invalid_regions(void)
NOINLINE_ATTR IRAM_ATTR static void esp_cpu_configure_invalid_regions(void)
{
const unsigned PMA_NONE = PMA_L | PMA_EN;
__attribute__((unused)) const unsigned PMA_RW = PMA_L | PMA_EN | PMA_R | PMA_W;