📄 at91_init.h
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/* * linux/include/asm-arm/arch-atmel/hardware.h * for Atmel AT91 series * 2001 Erwin Authried *//* chy 2002-12-12*/#define HZ 100/* 0=TC0, 1=TC1, 2=TC2 */#define KERNEL_TIMER 1 /* ******************* AT91x40xxx ******************** */#define NR_IRQS 24#define VALID_IRQ(i) (i<=8 ||(i>=16 && i<NR_IRQS))#define IRQ_FIQ 0#define IRQ_SWI 1#define IRQ_USART0 2#define IRQ_USART1 3#define IRQ_TC0 4#define IRQ_TC1 5#define IRQ_TC2 6#define IRQ_WD 7#define IRQ_PIOA 8#define IRQ_EXT0 16#define IRQ_EXT1 17#define IRQ_EXT2 18#define ARM_CLK (32768000)#define AT91_USART_CNT 2#define AT91_USART0_BASE (0xfffd0000)#define AT91_USART1_BASE (0xfffcc000)#define AT91_TC_BASE (0xfffe0000)#define AIC_BASE (0xfffff000) #define AT91_PIOA_BASE (0xffff0000)#define AT91_SF_CIDR (0xfff00000)#define HARD_RESET_NOW()#define HW_AT91_TIMER_INIT(timer) /* no PMC *//* enable US0,US1 */#define HW_AT91_USART_INIT ((volatile struct pio_regs *)AT91_PIOA_BASE)->pdr = \ PIOA_RXD0|PIOA_TXD0|PIOA_RXD1|PIOA_TXD1; /* PIOA bit allocation */#define PIOA_TCLK0 (1<<0) #define PIOA_TI0A0 (1<<1) #define PIOA_TI0B0 (1<<2) #define PIOA_TCLK1 (1<<3) #define PIOA_TIOA1 (1<<4) #define PIOA_TIOB1 (1<<5) #define PIOA_TCLK2 (1<<6) #define PIOA_TIOA2 (1<<7) #define PIOA_TIOB2 (1<<8) #define PIOA_IRQ0 (1<<9) #define PIOA_IRQ1 (1<<10) #define PIOA_IRQ2 (1<<11) #define PIOA_FIQ (1<<12) #define PIOA_SCK0 (1<<13) #define PIOA_TXD0 (1<<14) #define PIOA_RXD0 (1<<15)#define PIOA_SCK1 (1<<20) #define PIOA_TXD1 (1<<21) #define PIOA_RXD1 (1<<22)#define PIOA_MCK0 (1<<25) #define PIOA_NCS2 (1<<26)#define PIOA_NCS3 (1<<27) #define PIOA_A20_CS7 (1<<28)#define PIOA_A21_CS6 (1<<29) #define PIOA_A22_CS5 (1<<30)#define PIOA_A23_CS4 (1<<31)/* ******************* COMMON PART ******************** */#define AIC_SMR(i) (AIC_BASE+i*4)#define AIC_IVR (AIC_BASE+0x100)#define AIC_FVR (AIC_BASE+0x104)#define AIC_ISR (AIC_BASE+0x108)#define AIC_IPR (AIC_BASE+0x10C)#define AIC_IMR (AIC_BASE+0x110)#define AIC_CISR (AIC_BASE+0x114)#define AIC_IECR (AIC_BASE+0x120)#define AIC_IDCR (AIC_BASE+0x124)#define AIC_ICCR (AIC_BASE+0x128)#define AIC_ISCR (AIC_BASE+0x12C)#define AIC_EOICR (AIC_BASE+0x130)#ifndef __ASSEMBLER__struct at91_timer_channel{ unsigned long ccr; // channel control register (WO) unsigned long cmr; // channel mode register (RW) unsigned long reserved[2]; unsigned long cv; // counter value (RW) unsigned long ra; // register A (RW) unsigned long rb; // register B (RW) unsigned long rc; // register C (RW) unsigned long sr; // status register (RO) unsigned long ier; // interrupt enable register (WO) unsigned long idr; // interrupt disable register (WO) unsigned long imr; // interrupt mask register (RO)};struct at91_timers{ struct { struct at91_timer_channel ch; unsigned char padding[0x40-sizeof(struct at91_timer_channel)]; } chans[3]; unsigned long bcr; // block control register (WO) unsigned long bmr; // block mode register (RW)};#endif/* TC control register */#define TC_SYNC (1)/* TC mode register */#define TC2XC2S(x) (x & 0x3)#define TC1XC1S(x) (x<<2 & 0xc)#define TC0XC0S(x) (x<<4 & 0x30)#define TCNXCNS(timer,v) ((v) << (timer<<1))/* TC channel control */#define TC_CLKEN (1) #define TC_CLKDIS (1<<1) #define TC_SWTRG (1<<2) /* TC interrupts enable/disable/mask and status registers */#define TC_MTIOB (1<<18)#define TC_MTIOA (1<<17)#define TC_CLKSTA (1<<16)#define TC_ETRGS (1<<7)#define TC_LDRBS (1<<6)#define TC_LDRAS (1<<5)#define TC_CPCS (1<<4)#define TC_CPBS (1<<3)#define TC_CPAS (1<<2)#define TC_LOVRS (1<<1)#define TC_COVFS (1)/* * USART registers */#ifndef __ASSEMBLER__struct atmel_usart_regs{ unsigned long cr; // control unsigned long mr; // mode unsigned long ier; // interrupt enable unsigned long idr; // interrupt disable unsigned long imr; // interrupt mask unsigned long csr; // channel status unsigned long rhr; // receive holding unsigned long thr; // tramsmit holding unsigned long brgr; // baud rate generator unsigned long rtor; // rx time-out unsigned long ttgr; // tx time-guard unsigned long res1; unsigned long rpr; // rx pointer unsigned long rcr; // rx counter unsigned long tpr; // tx pointer unsigned long tcr; // tx counter};#endif/* US control register */#define US_SENDA (1<<12)#define US_STTO (1<<11)#define US_STPBRK (1<<10)#define US_STTBRK (1<<9)#define US_RSTSTA (1<<8)#define US_TXDIS (1<<7)#define US_TXEN (1<<6)#define US_RXDIS (1<<5)#define US_RXEN (1<<4)#define US_RSTTX (1<<3)#define US_RSTRX (1<<2)/* US mode register */#define US_CLK0 (1<<18)#define US_MODE9 (1<<17)#define US_CHMODE(x)(x<<14 & 0xc000)#define US_NBSTOP(x)(x<<12 & 0x3000)#define US_PAR(x) (x<<9 & 0xe00)#define US_SYNC (1<<8)#define US_CHRL(x) (x<<6 & 0xc0)#define US_USCLKS(x)(x<<4 & 0x30)/* US interrupts enable/disable/mask and status register */#define US_DMSI (1<<10)#define US_TXEMPTY (1<<9)#define US_TIMEOUT (1<<8)#define US_PARE (1<<7)#define US_FRAME (1<<6)#define US_OVRE (1<<5)#define US_ENDTX (1<<4)#define US_ENDRX (1<<3)#define US_RXBRK (1<<2)#define US_TXRDY (1<<1)#define US_RXRDY (1)#define US_ALL_INTS (US_DMSI|US_TXEMPTY|US_TIMEOUT|US_PARE|US_FRAME|US_OVRE|US_ENDTX|US_ENDRX|US_RXBRK|US_TXRDY|US_RXRDY) #define PIO(i) (1<<i)#ifndef __ASSEMBLER__struct pio_regs{ unsigned long per; unsigned long pdr; unsigned long psr; unsigned long res1; unsigned long oer; unsigned long odr; unsigned long osr; unsigned long res2; unsigned long ifer; unsigned long ifdr; unsigned long ifsr; unsigned long res3; unsigned long sodr; unsigned long codr; unsigned long odsr; unsigned long pdsr; unsigned long ier; unsigned long idr; unsigned long imr; unsigned long isr;};#endif#ifndef __ASSEMBLER__struct pmc_regs{ unsigned long scer; unsigned long scdr; unsigned long scsr; unsigned long reserved; unsigned long pcer; unsigned long pcdr; unsigned long pcsr;};#endif/* chy 2002-12-12 */#define USR26_MODE 0x00#define FIQ26_MODE 0x01#define IRQ26_MODE 0x02#define SVC26_MODE 0x03#define USR_MODE 0x10#define FIQ_MODE 0x11#define IRQ_MODE 0x12#define SVC_MODE 0x13#define ABT_MODE 0x17#define UND_MODE 0x1b#define SYSTEM_MODE 0x1f#define MODE_MASK 0x1f#define T_BIT 0x20#define F_BIT 0x40#define I_BIT 0x80#define CC_V_BIT (1 << 28)#define CC_C_BIT (1 << 29)#define CC_Z_BIT (1 << 30)#define CC_N_BIT (1 << 31)#define PCMASK 0#define __sti() \ ({ \ unsigned long temp; \ __asm__ __volatile__( \ "mrs %0, cpsr @ sti\n" \ "bic %0, %0, #128\n" \ "msr cpsr_c, %0" \ : "=r" (temp) \ : \ : "memory"); \ })/* * Disable IRQs*/ #define __cli() \ ({ \ unsigned long temp; \ __asm__ __volatile__( \ "mrs %0, cpsr @ cli\n" \ "orr %0, %0, #128\n" \ "msr cpsr_c, %0" \ : "=r" (temp) \ : \ : "memory"); \ })#ifndef __ASSEMBLER__extern void ARMDisableInt(void);extern void ARMEnableInt(void);#endif#if (KERNEL_TIMER==0)# define KERNEL_TIMER_IRQ_NUM IRQ_TC0#elif (KERNEL_TIMER==1)# define KERNEL_TIMER_IRQ_NUM IRQ_TC1#elif (KERNEL_TIMER==2)# define KERNEL_TIMER_IRQ_NUM IRQ_TC2#else#error Wierd -- KERNEL_TIMER is not defined or something....#endif⌨️ 快捷键说明
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