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* or1k/or1k_uart.c: Write bugfix and cleanup/documentation.

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* or1k/or1k_uart.h: Cleanup.
This commit is contained in:
Corinna Vinschen
2015-02-11 13:33:40 +00:00
parent 117b1b1edb
commit 19e714bcee
3 changed files with 105 additions and 57 deletions
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70
libgloss/or1k/or1k_uart.h
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@ -15,69 +15,29 @@
* they apply.
*/
/* This is the generic board support for the OpenCores UART device */
/* This is the generic board support for the OpenCores UART device, internal
* header. */
#include <stdint.h>
#include "board.h"
/**
* Registered callback function
*/
extern void (*_or1k_uart_read_cb)(char c);
/**
* The UART interrupt handler
*/
void _or1k_uart_interrupt_handler(uint32_t data);
/**
* Initialize UART
*/
int _or1k_uart_init(void);
/**
* Write character to UART
*/
void _or1k_uart_write(char c);
#define RB _or1k_board_uart_base + 0
#define THR _or1k_board_uart_base + 0
#define IER _or1k_board_uart_base + 1
#define IIR _or1k_board_uart_base + 2
#define FCR _or1k_board_uart_base + 2
#define LCR _or1k_board_uart_base + 3
#define MCR _or1k_board_uart_base + 4
#define LSR _or1k_board_uart_base + 5
#define MSR _or1k_board_uart_base + 6
#define DLB1 _or1k_board_uart_base + 0
#define DLB2 _or1k_board_uart_base + 1
#define IER_RDAI 0
#define IER_TEI 1
#define IER_RLSI 2
#define IER_MSI 3
#define IIR_RLS 0xC3
#define IIR_RDA 0xC2
#define IIR_TO 0xC6
#define IIR_THRE 0xC1
#define IIT_MS 0xC0
#define FCR_CLRRECV 0x1
#define FCR_CLRTMIT 0x2
#define FCR_TRIG_1 0x0
#define FCR_TRIG_4 0x40
#define FCR_TRIG_8 0x80
#define FCR_TRIG_14 0xC0
#define LCR_BPC_MASK 0x3
#define LCR_SB_MASK 0x4
#define LCR_BPC_5 0x0
#define LCR_BPC_6 0x1
#define LCR_BPC_7 0x2
#define LCR_BPC_8 0x3
#define LCR_SB_1 0x0
#define LCR_SB_2 0x4
#define LCR_PE 0x8
#define LCR_EPS 0x10
#define LCR_SP 0x20
#define LCR_BC 0x40
#define LCR_DLA 0x80
#define LSR_DR 0x0
#define LSR_OE 0x2
#define LSR_PE 0x4
#define LSR_FE 0x8
#define LSR_BI 0x10
#define LSR_TFE 0x20
#define LSR_TEI 0x40