xref: /rk3399_ARM-atf/include/drivers/marvell/uart/a3700_console.h (revision b8e637f49ea90d06b21f160eba3180717787730f)

/*
 * Copyright (C) 2016 Marvell International Ltd.
 *
 * SPDX-License-Identifier:	BSD-3-Clause
 * https://spdx.org/licenses
 */

#ifndef A3700_CONSOLE_H
#define A3700_CONSOLE_H

#include <drivers/console.h>

/* MVEBU UART Registers */
#define UART_RX_REG		0x00
#define UART_TX_REG		0x04
#define UART_CTRL_REG		0x08
#define UART_STATUS_REG		0x0c
#define UART_BAUD_REG		0x10
#define UART_POSSR_REG		0x14

/* FIFO Control Register bits */
#define UARTFCR_FIFOMD_16450	(0 << 6)
#define UARTFCR_FIFOMD_16550	(1 << 6)
#define UARTFCR_RXTRIG_1	(0 << 6)
#define UARTFCR_RXTRIG_4	(1 << 6)
#define UARTFCR_RXTRIG_8	(2 << 6)
#define UARTFCR_RXTRIG_16	(3 << 6)
#define UARTFCR_TXTRIG_1	(0 << 4)
#define UARTFCR_TXTRIG_4	(1 << 4)
#define UARTFCR_TXTRIG_8	(2 << 4)
#define UARTFCR_TXTRIG_16	(3 << 4)
#define UARTFCR_DMAEN		(1 << 3)	/* Enable DMA mode */
#define UARTFCR_TXCLR		(1 << 2)	/* Clear contents of Tx FIFO */
#define UARTFCR_RXCLR		(1 << 1)	/* Clear contents of Rx FIFO */
#define UARTFCR_FIFOEN		(1 << 0)	/* Enable the Tx/Rx FIFO */

/* Line Control Register bits */
#define UARTLCR_DLAB		(1 << 7)	/* Divisor Latch Access */
#define UARTLCR_SETB		(1 << 6)	/* Set BREAK Condition */
#define UARTLCR_SETP		(1 << 5)	/* Set Parity to LCR[4] */
#define UARTLCR_EVEN		(1 << 4)	/* Even Parity Format */
#define UARTLCR_PAR		(1 << 3)	/* Parity */
#define UARTLCR_STOP		(1 << 2)	/* Stop Bit */
#define UARTLCR_WORDSZ_5	0		/* Word Length of 5 */
#define UARTLCR_WORDSZ_6	1		/* Word Length of 6 */
#define UARTLCR_WORDSZ_7	2		/* Word Length of 7 */
#define UARTLCR_WORDSZ_8	3		/* Word Length of 8 */

/* Line Status Register bits */
#define UARTLSR_TXFIFOFULL	(1 << 11)	/* Tx Fifo Full */
#define UARTLSR_TXEMPTY		(1 << 6)	/* Tx Empty */
#define UARTLSR_RXRDY		(1 << 4)	/* Rx Ready */

/* UART Control Register bits */
#define UART_CTRL_RXFIFO_RESET	(1 << 14)
#define UART_CTRL_TXFIFO_RESET	(1 << 15)

#ifndef __ASSEMBLER__

#include <stdint.h>

/*
 * Initialize a new a3700 console instance and register it with the console
 * framework. The |console| pointer must point to storage that will be valid
 * for the lifetime of the console, such as a global or static local variable.
 * Its contents will be reinitialized from scratch.
 */
int console_a3700_register(uintptr_t baseaddr, uint32_t clock, uint32_t baud,
			   console_t *console);

#endif /*__ASSEMBLER__*/

#endif	/* A3700_CONSOLE_H */