/*
 * at32/f4.h
 * 
 * Core and peripheral registers.
 * 
 * Written & released by Keir Fraser <keir.xen@gmail.com>
 * 
 * This is free and unencumbered software released into the public domain.
 * See the file COPYING for more details, or visit <http://unlicense.org>.
 */

#define CORTEX_M3 1

/* C pointer types */
#define ACC volatile struct acc * const
#define BKP volatile struct bkp * const
#define AFIO volatile struct afio * const
#define DMA_CHN volatile struct dma_chn * const

/* C-accessible registers. */
static ACC acc = (struct acc *)ACC_BASE;
static STK stk = (struct stk *)STK_BASE;
static SCB scb = (struct scb *)SCB_BASE;
static NVIC nvic = (struct nvic *)NVIC_BASE;
static DBG dbg = (struct dbg *)DBG_BASE;
static FLASH flash = (struct flash *)FLASH_BASE;
static PWR pwr = (struct pwr *)PWR_BASE;
static BKP bkp = (struct bkp *)BKP_BASE;
static RCC rcc = (struct rcc *)RCC_BASE;
static IWDG iwdg = (struct iwdg *)IWDG_BASE;
static GPIO gpioa = (struct gpio *)GPIOA_BASE;
static GPIO gpiob = (struct gpio *)GPIOB_BASE;
static GPIO gpioc = (struct gpio *)GPIOC_BASE;
static GPIO gpiod = (struct gpio *)GPIOD_BASE;
static GPIO gpioe = (struct gpio *)GPIOE_BASE;
static GPIO gpiof = (struct gpio *)GPIOF_BASE;
static GPIO gpiog = (struct gpio *)GPIOG_BASE;
static AFIO afio = (struct afio *)AFIO_BASE;
static EXTI exti = (struct exti *)EXTI_BASE;
static DMA dma1 = (struct dma *)DMA1_BASE;
static DMA dma2 = (struct dma *)DMA2_BASE;
static TIM tim1 = (struct tim *)TIM1_BASE;
static TIM tim2 = (struct tim *)TIM2_BASE;
static TIM tim3 = (struct tim *)TIM3_BASE;
static TIM tim4 = (struct tim *)TIM4_BASE;
static TIM tim5 = (struct tim *)TIM5_BASE;
static TIM tim6 = (struct tim *)TIM6_BASE;
static TIM tim7 = (struct tim *)TIM7_BASE;
static SPI spi1 = (struct spi *)SPI1_BASE;
static SPI spi2 = (struct spi *)SPI2_BASE;
static SPI spi3 = (struct spi *)SPI3_BASE;
static I2C i2c1 = (struct i2c *)I2C1_BASE;
static I2C i2c2 = (struct i2c *)I2C2_BASE;
static USART usart1 = (struct usart *)USART1_BASE;
static USART usart2 = (struct usart *)USART2_BASE;
static USART usart3 = (struct usart *)USART3_BASE;
static SER_ID ser_id = (uint32_t *)0x1ffff7e8;

#define AT32F403  0x02
#define AT32F413  0x04
#define AT32F415  0x05
#define AT32F403A 0x07
#define AT32F407  0x08
extern unsigned int at32f4_series;

void identify_board_config(void);

/* On reset, SYSCLK=HSI at 8MHz. SYSCLK runs at 1MHz. */
void early_fatal(int blinks) __attribute__((noreturn));
#define early_delay_ms(ms) (delay_ticks((ms)*1000))
#define early_delay_us(us) (delay_ticks((us)*1))

extern unsigned int sysclk_mhz;
extern unsigned int apb_mhz;
#define SYSCLK_MHZ sysclk_mhz
#define AHB_MHZ    sysclk_mhz
#define APB1_MHZ   apb_mhz
#define APB2_MHZ   apb_mhz

extern unsigned int FLASH_PAGE_SIZE;

/* No delay required after enabling a peripheral clock, before accessing it. */
#define peripheral_clock_delay() ((void)0)

/* No secondary RAM region */
#define section_ext_ram

extern unsigned int sram_kb;

enum {
    F4SM_v4 = 0,
    F4SM_v4_slim,
    F4SM_v4_1,
};

/* Core floppy pin assignments vary between F4 submodels (except INDEX, RDATA, 
 * and WDATA). All the following assignments are within GPIOB. */
struct core_floppy_pins {
    uint8_t trk0;
    uint8_t wrprot;
    uint8_t dir;
    uint8_t step;
    uint8_t wgate;
    uint8_t head;
};
extern const struct core_floppy_pins *core_floppy_pins;

/*
 * Local variables:
 * mode: C
 * c-file-style: "Linux"
 * c-basic-offset: 4
 * tab-width: 4
 * indent-tabs-mode: nil
 * End:
 */