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stm32/sdram: Add support for 32-bit wide data bus and 256MB in MPU cfg.

This commit is contained in:
Damien George 2018-09-20 11:29:37 +10:00
parent dc77fdb7d4
commit 9639e0d26f
1 changed files with 23 additions and 1 deletions
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24
ports/stm32/sdram.c
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@ -69,6 +69,10 @@ bool sdram_init(void) {
mp_hal_pin_config_alt_static(MICROPY_HW_FMC_BA1, MP_HAL_PIN_MODE_ALT, MP_HAL_PIN_PULL_NONE, STATIC_AF_FMC_BA1);
mp_hal_pin_config_alt_static(MICROPY_HW_FMC_NBL0, MP_HAL_PIN_MODE_ALT, MP_HAL_PIN_PULL_NONE, STATIC_AF_FMC_NBL0);
mp_hal_pin_config_alt_static(MICROPY_HW_FMC_NBL1, MP_HAL_PIN_MODE_ALT, MP_HAL_PIN_PULL_NONE, STATIC_AF_FMC_NBL1);
#ifdef MICROPY_HW_FMC_NBL2
mp_hal_pin_config_alt_static(MICROPY_HW_FMC_NBL2, MP_HAL_PIN_MODE_ALT, MP_HAL_PIN_PULL_NONE, STATIC_AF_FMC_NBL2);
mp_hal_pin_config_alt_static(MICROPY_HW_FMC_NBL3, MP_HAL_PIN_MODE_ALT, MP_HAL_PIN_PULL_NONE, STATIC_AF_FMC_NBL3);
#endif
mp_hal_pin_config_alt_static(MICROPY_HW_FMC_A0, MP_HAL_PIN_MODE_ALT, MP_HAL_PIN_PULL_NONE, STATIC_AF_FMC_A0);
mp_hal_pin_config_alt_static(MICROPY_HW_FMC_A1, MP_HAL_PIN_MODE_ALT, MP_HAL_PIN_PULL_NONE, STATIC_AF_FMC_A1);
mp_hal_pin_config_alt_static(MICROPY_HW_FMC_A2, MP_HAL_PIN_MODE_ALT, MP_HAL_PIN_PULL_NONE, STATIC_AF_FMC_A2);
@ -100,6 +104,24 @@ bool sdram_init(void) {
mp_hal_pin_config_alt_static(MICROPY_HW_FMC_D13, MP_HAL_PIN_MODE_ALT, MP_HAL_PIN_PULL_NONE, STATIC_AF_FMC_D13);
mp_hal_pin_config_alt_static(MICROPY_HW_FMC_D14, MP_HAL_PIN_MODE_ALT, MP_HAL_PIN_PULL_NONE, STATIC_AF_FMC_D14);
mp_hal_pin_config_alt_static(MICROPY_HW_FMC_D15, MP_HAL_PIN_MODE_ALT, MP_HAL_PIN_PULL_NONE, STATIC_AF_FMC_D15);
#ifdef MICROPY_HW_FMC_D16
mp_hal_pin_config_alt_static(MICROPY_HW_FMC_D16, MP_HAL_PIN_MODE_ALT, MP_HAL_PIN_PULL_NONE, STATIC_AF_FMC_D16);
mp_hal_pin_config_alt_static(MICROPY_HW_FMC_D17, MP_HAL_PIN_MODE_ALT, MP_HAL_PIN_PULL_NONE, STATIC_AF_FMC_D17);
mp_hal_pin_config_alt_static(MICROPY_HW_FMC_D18, MP_HAL_PIN_MODE_ALT, MP_HAL_PIN_PULL_NONE, STATIC_AF_FMC_D18);
mp_hal_pin_config_alt_static(MICROPY_HW_FMC_D19, MP_HAL_PIN_MODE_ALT, MP_HAL_PIN_PULL_NONE, STATIC_AF_FMC_D19);
mp_hal_pin_config_alt_static(MICROPY_HW_FMC_D20, MP_HAL_PIN_MODE_ALT, MP_HAL_PIN_PULL_NONE, STATIC_AF_FMC_D20);
mp_hal_pin_config_alt_static(MICROPY_HW_FMC_D21, MP_HAL_PIN_MODE_ALT, MP_HAL_PIN_PULL_NONE, STATIC_AF_FMC_D21);
mp_hal_pin_config_alt_static(MICROPY_HW_FMC_D22, MP_HAL_PIN_MODE_ALT, MP_HAL_PIN_PULL_NONE, STATIC_AF_FMC_D22);
mp_hal_pin_config_alt_static(MICROPY_HW_FMC_D23, MP_HAL_PIN_MODE_ALT, MP_HAL_PIN_PULL_NONE, STATIC_AF_FMC_D23);
mp_hal_pin_config_alt_static(MICROPY_HW_FMC_D24, MP_HAL_PIN_MODE_ALT, MP_HAL_PIN_PULL_NONE, STATIC_AF_FMC_D24);
mp_hal_pin_config_alt_static(MICROPY_HW_FMC_D25, MP_HAL_PIN_MODE_ALT, MP_HAL_PIN_PULL_NONE, STATIC_AF_FMC_D25);
mp_hal_pin_config_alt_static(MICROPY_HW_FMC_D26, MP_HAL_PIN_MODE_ALT, MP_HAL_PIN_PULL_NONE, STATIC_AF_FMC_D26);
mp_hal_pin_config_alt_static(MICROPY_HW_FMC_D27, MP_HAL_PIN_MODE_ALT, MP_HAL_PIN_PULL_NONE, STATIC_AF_FMC_D27);
mp_hal_pin_config_alt_static(MICROPY_HW_FMC_D28, MP_HAL_PIN_MODE_ALT, MP_HAL_PIN_PULL_NONE, STATIC_AF_FMC_D28);
mp_hal_pin_config_alt_static(MICROPY_HW_FMC_D29, MP_HAL_PIN_MODE_ALT, MP_HAL_PIN_PULL_NONE, STATIC_AF_FMC_D29);
mp_hal_pin_config_alt_static(MICROPY_HW_FMC_D30, MP_HAL_PIN_MODE_ALT, MP_HAL_PIN_PULL_NONE, STATIC_AF_FMC_D30);
mp_hal_pin_config_alt_static(MICROPY_HW_FMC_D31, MP_HAL_PIN_MODE_ALT, MP_HAL_PIN_PULL_NONE, STATIC_AF_FMC_D31);
#endif
/* SDRAM device configuration */
hsdram.Instance = FMC_SDRAM_DEVICE;
@ -225,7 +247,7 @@ static void sdram_init_seq(SDRAM_HandleTypeDef
/* Configure the MPU attributes as Write-Through for External SDRAM */
MPU_InitStruct.Enable = MPU_REGION_ENABLE;
MPU_InitStruct.BaseAddress = SDRAM_START_ADDRESS;
MPU_InitStruct.Size = MPU_REGION_SIZE_8MB;
MPU_InitStruct.Size = MPU_REGION_SIZE_256MB;
MPU_InitStruct.AccessPermission = MPU_REGION_FULL_ACCESS;
MPU_InitStruct.IsBufferable = MPU_ACCESS_NOT_BUFFERABLE;
MPU_InitStruct.IsCacheable = MPU_ACCESS_CACHEABLE;