arch/arm/include/asm/arch-stm32f4/stm32.h

   1 /*
   2  * (C) Copyright 2011
   3  * Yuri Tikhonov, Emcraft Systems, yur@emcraft.com
   4  *
   5  * (C) Copyright 2015
   6  * Kamil Lulko, <kamil.lulko@gmail.com>
   7  *
   8  * SPDX-License-Identifier:     GPL-2.0+
   9  */
  10
  11 #ifndef _MACH_STM32_H_
  12 #define _MACH_STM32_H_
  13
  14 /*
  15  * Peripheral memory map
  16  */
  17 #define STM32_SYSMEM_BASE       0x1FFF0000
  18 #define STM32_PERIPH_BASE       0x40000000
  19 #define STM32_APB1PERIPH_BASE   (STM32_PERIPH_BASE + 0x00000000)
  20 #define STM32_APB2PERIPH_BASE   (STM32_PERIPH_BASE + 0x00010000)
  21 #define STM32_AHB1PERIPH_BASE   (STM32_PERIPH_BASE + 0x00020000)
  22 #define STM32_AHB2PERIPH_BASE   (STM32_PERIPH_BASE + 0x10000000)
  23
  24 #define STM32_BUS_MASK          0xFFFF0000
  25
  26 #define STM32_GPIOA_BASE        (STM32_AHB1PERIPH_BASE + 0x0000)
  27 #define STM32_GPIOB_BASE        (STM32_AHB1PERIPH_BASE + 0x0400)
  28 #define STM32_GPIOC_BASE        (STM32_AHB1PERIPH_BASE + 0x0800)
  29 #define STM32_GPIOD_BASE        (STM32_AHB1PERIPH_BASE + 0x0C00)
  30 #define STM32_GPIOE_BASE        (STM32_AHB1PERIPH_BASE + 0x1000)
  31 #define STM32_GPIOF_BASE        (STM32_AHB1PERIPH_BASE + 0x1400)
  32 #define STM32_GPIOG_BASE        (STM32_AHB1PERIPH_BASE + 0x1800)
  33 #define STM32_GPIOH_BASE        (STM32_AHB1PERIPH_BASE + 0x1C00)
  34 #define STM32_GPIOI_BASE        (STM32_AHB1PERIPH_BASE + 0x2000)
  35
  36 /*
  37  * Register maps
  38  */
  39 struct stm32_u_id_regs {
  40         u32 u_id_low;
  41         u32 u_id_mid;
  42         u32 u_id_high;
  43 };
  44
  45 struct stm32_rcc_regs {
  46         u32 cr;         /* RCC clock control */
  47         u32 pllcfgr;    /* RCC PLL configuration */
  48         u32 cfgr;       /* RCC clock configuration */
  49         u32 cir;        /* RCC clock interrupt */
  50         u32 ahb1rstr;   /* RCC AHB1 peripheral reset */
  51         u32 ahb2rstr;   /* RCC AHB2 peripheral reset */
  52         u32 ahb3rstr;   /* RCC AHB3 peripheral reset */
  53         u32 rsv0;
  54         u32 apb1rstr;   /* RCC APB1 peripheral reset */
  55         u32 apb2rstr;   /* RCC APB2 peripheral reset */
  56         u32 rsv1[2];
  57         u32 ahb1enr;    /* RCC AHB1 peripheral clock enable */
  58         u32 ahb2enr;    /* RCC AHB2 peripheral clock enable */
  59         u32 ahb3enr;    /* RCC AHB3 peripheral clock enable */
  60         u32 rsv2;
  61         u32 apb1enr;    /* RCC APB1 peripheral clock enable */
  62         u32 apb2enr;    /* RCC APB2 peripheral clock enable */
  63         u32 rsv3[2];
  64         u32 ahb1lpenr;  /* RCC AHB1 periph clk enable in low pwr mode */
  65         u32 ahb2lpenr;  /* RCC AHB2 periph clk enable in low pwr mode */
  66         u32 ahb3lpenr;  /* RCC AHB3 periph clk enable in low pwr mode */
  67         u32 rsv4;
  68         u32 apb1lpenr;  /* RCC APB1 periph clk enable in low pwr mode */
  69         u32 apb2lpenr;  /* RCC APB2 periph clk enable in low pwr mode */
  70         u32 rsv5[2];
  71         u32 bdcr;       /* RCC Backup domain control */
  72         u32 csr;        /* RCC clock control & status */
  73         u32 rsv6[2];
  74         u32 sscgr;      /* RCC spread spectrum clock generation */
  75         u32 plli2scfgr; /* RCC PLLI2S configuration */
  76         u32 pllsaicfgr;
  77         u32 dckcfgr;
  78 };
  79
  80 struct stm32_pwr_regs {
  81         u32 cr;
  82         u32 csr;
  83 };
  84
  85 struct stm32_flash_regs {
  86         u32 acr;
  87         u32 key;
  88         u32 optkeyr;
  89         u32 sr;
  90         u32 cr;
  91         u32 optcr;
  92         u32 optcr1;
  93 };
  94
  95 /*
  96  * Registers access macros
  97  */
  98 #define STM32_U_ID_BASE         (STM32_SYSMEM_BASE + 0x7A10)
  99 #define STM32_U_ID              ((struct stm32_u_id_regs *)STM32_U_ID_BASE)
 100
 101 #define STM32_RCC_BASE          (STM32_AHB1PERIPH_BASE + 0x3800)
 102 #define STM32_RCC               ((struct stm32_rcc_regs *)STM32_RCC_BASE)
 103
 104 #define STM32_PWR_BASE          (STM32_APB1PERIPH_BASE + 0x7000)
 105 #define STM32_PWR               ((struct stm32_pwr_regs *)STM32_PWR_BASE)
 106
 107 #define STM32_FLASH_BASE        (STM32_AHB1PERIPH_BASE + 0x3C00)
 108 #define STM32_FLASH             ((struct stm32_flash_regs *)STM32_FLASH_BASE)
 109
 110 #define STM32_FLASH_SR_BSY              (1 << 16)
 111
 112 #define STM32_FLASH_CR_PG               (1 << 0)
 113 #define STM32_FLASH_CR_SER              (1 << 1)
 114 #define STM32_FLASH_CR_STRT             (1 << 16)
 115 #define STM32_FLASH_CR_LOCK             (1 << 31)
 116 #define STM32_FLASH_CR_SNB_OFFSET       3
 117 #define STM32_FLASH_CR_SNB_MASK         (15 << STM32_FLASH_CR_SNB_OFFSET)
 118
 119 /*
 120  * Peripheral base addresses
 121  */
 122 #define STM32_USART1_BASE       (STM32_APB2PERIPH_BASE + 0x1000)
 123 #define STM32_USART2_BASE       (STM32_APB1PERIPH_BASE + 0x4400)
 124 #define STM32_USART3_BASE       (STM32_APB1PERIPH_BASE + 0x4800)
 125 #define STM32_USART6_BASE       (STM32_APB2PERIPH_BASE + 0x1400)
 126
 127 enum clock {
 128         CLOCK_CORE,
 129         CLOCK_AHB,
 130         CLOCK_APB1,
 131         CLOCK_APB2
 132 };
 133
 134 int configure_clocks(void);
 135 unsigned long clock_get(enum clock clck);
 136
 137 #endif /* _MACH_STM32_H_ */