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Initial commit.

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nwert
2018-03-07 14:11:46 +13:00
commit 6f6683e05b
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43
hwinit/uart.h Normal file
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#ifndef _UART_H_
#define _UART_H_
#include "types.h"
#define UART_A 0
#define UART_B 1
#define UART_C 2
//TODO: define clock inits for those.
/*#define UART_D 3
#define UART_E 4*/
#define BAUD_115200 115200
#define UART_TX_IDLE 0x00000001
#define UART_RX_IDLE 0x00000002
#define UART_TX_FIFO_FULL 0x100
#define UART_RX_FIFO_EMPTY 0x200
typedef struct _uart_t
{
/* 0x00 */ u32 UART_THR_DLAB;
/* 0x04 */ u32 UART_IER_DLAB;
/* 0x08 */ u32 UART_IIR_FCR;
/* 0x0C */ u32 UART_LCR;
/* 0x10 */ u32 UART_MCR;
/* 0x14 */ u32 UART_LSR;
/* 0x18 */ u32 UART_MSR;
/* 0x1C */ u32 UART_SPR;
/* 0x20 */ u32 UART_IRDA_CSR;
/* 0x24 */ u32 UART_RX_FIFO_CFG;
/* 0x28 */ u32 UART_MIE;
/* 0x2C */ u32 UART_VENDOR_STATUS;
/* 0x30 */ u8 _pad_30[0x0C];
/* 0x3C */ u32 UART_ASR;
} uart_t;
void uart_init(u32 idx, u32 baud);
void uart_wait_idle(u32 idx, u32 which);
void uart_send(u32 idx, u8 *buf, u32 len);
void uart_recv(u32 idx, u8 *buf, u32 len);
#endif