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fix(esp_hw_support): Fix the I/DCACHE region PMP protection

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This commit is contained in:
Laukik Hase 2024-01-17 13:40:49 +05:30
parent 929a8449bd
commit 5173ba1777
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GPG Key ID: D6F3208C06086AC8
2 changed files with 94 additions and 8 deletions
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51
components/esp_hw_support/port/esp32c6/cpu_region_protect.c
View File

@ -13,17 +13,45 @@
#ifdef BOOTLOADER_BUILD
// Without L bit set
#define CONDITIONAL_NONE 0x0
#define CONDITIONAL_R PMP_R
#define CONDITIONAL_RX PMP_R | PMP_X
#define CONDITIONAL_RW PMP_R | PMP_W
#define CONDITIONAL_RWX PMP_R | PMP_W | PMP_X
#else
// With L bit set
#define CONDITIONAL_NONE NONE
#define CONDITIONAL_R R
#define CONDITIONAL_RX RX
#define CONDITIONAL_RW RW
#define CONDITIONAL_RWX RWX
#endif
#define ALIGN_UP_TO_MMU_PAGE_SIZE(addr) (((addr) + (SOC_MMU_PAGE_SIZE) - 1) & ~((SOC_MMU_PAGE_SIZE) - 1))
#define ALIGN_DOWN_TO_MMU_PAGE_SIZE(addr) ((addr) & ~((SOC_MMU_PAGE_SIZE) - 1))
/**
* @brief Generate the PMP address field value for PMPCFG.A == NAPOT
*
* NOTE: Here, (end-start) must be a power of 2 size and start must
* be aligned to this size. This API returns UINT32_MAX on failing
* these conditions, which when plugged into the PMP entry registers
* does nothing. This skips the corresponding region's protection.
*
* @param start Region starting address
* @param end Region ending address
*
* @return uint32_t PMP address field value
*/
static inline uint32_t pmpaddr_napot(uint32_t start, uint32_t end)
{
uint32_t size = end - start;
if ((size & (size - 1)) || (start % size)) {
return UINT32_MAX;
}
return start | ((size - 1) >> 1);
}
static void esp_cpu_configure_invalid_regions(void)
{
const unsigned PMA_NONE = PMA_L | PMA_EN;
@ -155,15 +183,30 @@ void esp_cpu_configure_region_protection(void)
#endif
}
#if CONFIG_ESP_SYSTEM_PMP_IDRAM_SPLIT && !BOOTLOADER_BUILD
extern int _instruction_reserved_end;
extern int _rodata_reserved_start;
extern int _rodata_reserved_end;
const uint32_t irom_resv_end = ALIGN_UP_TO_MMU_PAGE_SIZE((uint32_t)(&_instruction_reserved_end));
const uint32_t drom_resv_start = ALIGN_DOWN_TO_MMU_PAGE_SIZE((uint32_t)(&_rodata_reserved_start));
const uint32_t drom_resv_end = ALIGN_UP_TO_MMU_PAGE_SIZE((uint32_t)(&_rodata_reserved_end));
// 4. I_Cache (flash)
const uint32_t pmpaddr8 = PMPADDR_NAPOT(SOC_IROM_LOW, SOC_IROM_HIGH);
PMP_ENTRY_CFG_RESET(8);
const uint32_t pmpaddr8 = pmpaddr_napot(SOC_IROM_LOW, irom_resv_end);
PMP_ENTRY_SET(8, pmpaddr8, PMP_NAPOT | RX);
_Static_assert(SOC_IROM_LOW < SOC_IROM_HIGH, "Invalid I_Cache region");
// 5. D_Cache (flash)
const uint32_t pmpaddr9 = PMPADDR_NAPOT(SOC_DROM_LOW, SOC_DROM_HIGH);
PMP_ENTRY_CFG_RESET(9);
const uint32_t pmpaddr9 = pmpaddr_napot(drom_resv_start, drom_resv_end);
PMP_ENTRY_SET(9, pmpaddr9, PMP_NAPOT | R);
_Static_assert(SOC_DROM_LOW < SOC_DROM_HIGH, "Invalid D_Cache region");
#else
// 4. I_Cache / D_Cache (flash)
const uint32_t pmpaddr8 = PMPADDR_NAPOT(SOC_IROM_LOW, SOC_IROM_HIGH);
PMP_ENTRY_SET(8, pmpaddr8, PMP_NAPOT | CONDITIONAL_RX);
_Static_assert(SOC_IROM_LOW < SOC_IROM_HIGH, "Invalid I/D_Cache region");
#endif
// 6. LP memory
#if CONFIG_ESP_SYSTEM_PMP_IDRAM_SPLIT && !BOOTLOADER_BUILD

51
components/esp_hw_support/port/esp32h2/cpu_region_protect.c
View File

@ -13,17 +13,45 @@
#ifdef BOOTLOADER_BUILD
// Without L bit set
#define CONDITIONAL_NONE 0x0
#define CONDITIONAL_R PMP_R
#define CONDITIONAL_RX PMP_R | PMP_X
#define CONDITIONAL_RW PMP_R | PMP_W
#define CONDITIONAL_RWX PMP_R | PMP_W | PMP_X
#else
// With L bit set
#define CONDITIONAL_NONE NONE
#define CONDITIONAL_R R
#define CONDITIONAL_RX RX
#define CONDITIONAL_RW RW
#define CONDITIONAL_RWX RWX
#endif
#define ALIGN_UP_TO_MMU_PAGE_SIZE(addr) (((addr) + (SOC_MMU_PAGE_SIZE) - 1) & ~((SOC_MMU_PAGE_SIZE) - 1))
#define ALIGN_DOWN_TO_MMU_PAGE_SIZE(addr) ((addr) & ~((SOC_MMU_PAGE_SIZE) - 1))
/**
* @brief Generate the PMP address field value for PMPCFG.A == NAPOT
*
* NOTE: Here, (end-start) must be a power of 2 size and start must
* be aligned to this size. This API returns UINT32_MAX on failing
* these conditions, which when plugged into the PMP entry registers
* does nothing. This skips the corresponding region's protection.
*
* @param start Region starting address
* @param end Region ending address
*
* @return uint32_t PMP address field value
*/
static inline uint32_t pmpaddr_napot(uint32_t start, uint32_t end)
{
uint32_t size = end - start;
if ((size & (size - 1)) || (start % size)) {
return UINT32_MAX;
}
return start | ((size - 1) >> 1);
}
static void esp_cpu_configure_invalid_regions(void)
{
const unsigned PMA_NONE = PMA_L | PMA_EN;
@ -155,15 +183,30 @@ void esp_cpu_configure_region_protection(void)
#endif
}
#if CONFIG_ESP_SYSTEM_PMP_IDRAM_SPLIT && !BOOTLOADER_BUILD
extern int _instruction_reserved_end;
extern int _rodata_reserved_start;
extern int _rodata_reserved_end;
const uint32_t irom_resv_end = ALIGN_UP_TO_MMU_PAGE_SIZE((uint32_t)(&_instruction_reserved_end));
const uint32_t drom_resv_start = ALIGN_DOWN_TO_MMU_PAGE_SIZE((uint32_t)(&_rodata_reserved_start));
const uint32_t drom_resv_end = ALIGN_UP_TO_MMU_PAGE_SIZE((uint32_t)(&_rodata_reserved_end));
// 4. I_Cache (flash)
const uint32_t pmpaddr8 = PMPADDR_NAPOT(SOC_IROM_LOW, SOC_IROM_HIGH);
PMP_ENTRY_CFG_RESET(8);
const uint32_t pmpaddr8 = pmpaddr_napot(SOC_IROM_LOW, irom_resv_end);
PMP_ENTRY_SET(8, pmpaddr8, PMP_NAPOT | RX);
_Static_assert(SOC_IROM_LOW < SOC_IROM_HIGH, "Invalid I_Cache region");
// 5. D_Cache (flash)
const uint32_t pmpaddr9 = PMPADDR_NAPOT(SOC_DROM_LOW, SOC_DROM_HIGH);
PMP_ENTRY_CFG_RESET(9);
const uint32_t pmpaddr9 = pmpaddr_napot(drom_resv_start, drom_resv_end);
PMP_ENTRY_SET(9, pmpaddr9, PMP_NAPOT | R);
_Static_assert(SOC_DROM_LOW < SOC_DROM_HIGH, "Invalid D_Cache region");
#else
// 4. I_Cache / D_Cache (flash)
const uint32_t pmpaddr8 = PMPADDR_NAPOT(SOC_IROM_LOW, SOC_IROM_HIGH);
PMP_ENTRY_SET(8, pmpaddr8, PMP_NAPOT | CONDITIONAL_RX);
_Static_assert(SOC_IROM_LOW < SOC_IROM_HIGH, "Invalid I/D_Cache region");
#endif
// 6. LP memory
#if CONFIG_ESP_SYSTEM_PMP_IDRAM_SPLIT && !BOOTLOADER_BUILD