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22 lines
372 B
22 lines
372 B
7 years ago
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#ifndef _RISCV_UART_H
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#define _RISCV_UART_H
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#include <stdint.h>
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extern volatile uint32_t* uart;
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#define UART_REG_TXFIFO 0
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#define UART_REG_RXFIFO 1
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#define UART_REG_TXCTRL 2
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#define UART_REG_RXCTRL 3
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#define UART_REG_DIV 4
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#define UART_TXEN 0x1
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#define UART_RXEN 0x1
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void uart_putchar(uint8_t ch);
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int uart_getchar();
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void query_uart(uintptr_t dtb);
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#endif
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