145 lines
5.0 KiB
C
145 lines
5.0 KiB
C
/*
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* Copyright (c) 2015 Travis Geiselbrecht
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files
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* (the "Software"), to deal in the Software without restriction,
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* including without limitation the rights to use, copy, modify, merge,
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* publish, distribute, sublicense, and/or sell copies of the Software,
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* and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include <err.h>
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#include <debug.h>
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#include <trace.h>
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#include <target.h>
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#include <compiler.h>
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#include <dev/gpio.h>
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#include <platform/stm32.h>
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#include <platform/sdram.h>
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#include <platform/gpio.h>
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#include <target/debugconfig.h>
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#include <target/gpioconfig.h>
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#include <reg.h>
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static void MPU_RegionConfig(void);
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void target_early_init(void)
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{
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#if DEBUG_UART == 1
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/* configure usart 1 pins */
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gpio_config(GPIO_USART1_TX, GPIO_STM32_AF | GPIO_STM32_AFn(GPIO_AF7_USART1) | GPIO_PULLUP);
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gpio_config(GPIO_USART1_RX, GPIO_STM32_AF | GPIO_STM32_AFn(GPIO_AF7_USART1) | GPIO_PULLUP);
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#else
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#error need to configure gpio pins for debug uart
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#endif
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/* now that the uart gpios are configured, enable the debug uart */
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stm32_debug_early_init();
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#if defined(ENABLE_SDRAM)
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/* initialize SDRAM */
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sdram_config_t sdram_config;
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sdram_config.bus_width = SDRAM_BUS_WIDTH_16;
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sdram_config.cas_latency = SDRAM_CAS_LATENCY_2;
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sdram_config.col_bits_num = SDRAM_COLUMN_BITS_8;
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stm32_sdram_init(&sdram_config);
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MPU_RegionConfig();
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#endif
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}
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void target_init(void)
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{
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stm32_debug_init();
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}
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static void MPU_RegionConfig(void)
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{
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MPU_Region_InitTypeDef MPU_InitStruct;
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HAL_MPU_Disable();
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uint region_num = 0;
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/* configure SDRAM */
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MPU_InitStruct.Enable = MPU_REGION_ENABLE;
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MPU_InitStruct.BaseAddress = SDRAM_BASE;
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MPU_InitStruct.Size = MPU_REGION_SIZE_32MB;
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MPU_InitStruct.AccessPermission = MPU_REGION_PRIV_RW;
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MPU_InitStruct.IsBufferable = MPU_ACCESS_BUFFERABLE;
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MPU_InitStruct.IsCacheable = MPU_ACCESS_CACHEABLE;
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MPU_InitStruct.IsShareable = MPU_ACCESS_NOT_SHAREABLE;
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MPU_InitStruct.Number = region_num++;
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MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL1;
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MPU_InitStruct.SubRegionDisable = 0x00;
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MPU_InitStruct.DisableExec = MPU_INSTRUCTION_ACCESS_ENABLE;
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HAL_MPU_ConfigRegion(&MPU_InitStruct);
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HAL_MPU_Enable(MPU_HFNMI_PRIVDEF);
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}
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/**
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* @brief Initializes SDRAM GPIO.
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* called back from stm32_sdram_init
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*/
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void stm_sdram_GPIO_init(void)
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{
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GPIO_InitTypeDef gpio_init_structure;
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/* Enable GPIOs clock */
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__HAL_RCC_GPIOC_CLK_ENABLE();
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__HAL_RCC_GPIOD_CLK_ENABLE();
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__HAL_RCC_GPIOE_CLK_ENABLE();
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__HAL_RCC_GPIOF_CLK_ENABLE();
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__HAL_RCC_GPIOG_CLK_ENABLE();
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__HAL_RCC_GPIOH_CLK_ENABLE();
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/* Common GPIO configuration */
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gpio_init_structure.Mode = GPIO_MODE_AF_PP;
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gpio_init_structure.Pull = GPIO_PULLUP;
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gpio_init_structure.Speed = GPIO_SPEED_FAST;
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gpio_init_structure.Alternate = GPIO_AF12_FMC;
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/* GPIOC configuration */
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gpio_init_structure.Pin = GPIO_PIN_3;
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HAL_GPIO_Init(GPIOC, &gpio_init_structure);
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/* GPIOD configuration */
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gpio_init_structure.Pin = GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_3 | GPIO_PIN_8| GPIO_PIN_9 | GPIO_PIN_10 |\
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GPIO_PIN_14 | GPIO_PIN_15;
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HAL_GPIO_Init(GPIOD, &gpio_init_structure);
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/* GPIOE configuration */
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gpio_init_structure.Pin = GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_7| GPIO_PIN_8 | GPIO_PIN_9 |\
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GPIO_PIN_10 | GPIO_PIN_11 | GPIO_PIN_12 | GPIO_PIN_13 | GPIO_PIN_14 |\
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GPIO_PIN_15;
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HAL_GPIO_Init(GPIOE, &gpio_init_structure);
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/* GPIOF configuration */
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gpio_init_structure.Pin = GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_2| GPIO_PIN_3 | GPIO_PIN_4 |\
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GPIO_PIN_5 | GPIO_PIN_11 | GPIO_PIN_12 | GPIO_PIN_13 | GPIO_PIN_14 |\
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GPIO_PIN_15;
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HAL_GPIO_Init(GPIOF, &gpio_init_structure);
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/* GPIOG configuration */
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gpio_init_structure.Pin = GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_4| GPIO_PIN_5 | GPIO_PIN_8 |\
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GPIO_PIN_15;
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HAL_GPIO_Init(GPIOG, &gpio_init_structure);
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/* GPIOH configuration */
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gpio_init_structure.Pin = GPIO_PIN_3 | GPIO_PIN_5;
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HAL_GPIO_Init(GPIOH, &gpio_init_structure);
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}
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