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/*
* This file is part of the coreboot project.
*
* Copyright (c) 2013-2014, ARM Limited and Contributors. All rights reserved.
* Copyright 2018-present Facebook, Inc.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#ifndef __DRIVERS_UART_PL011_H
#define __DRIVERS_UART_PL011_H
#include <inttypes.h>
#include <types.h>
/* PL011 r1p5 registers */
struct pl011_uart {
u32 dr;
u32 rsr_ecr;
u8 rsvd1[0x10];
u32 fr;
u8 rsvd2[0x4];
u32 ilpr;
u32 ibrd;
u32 fbrd;
u32 lcr_h;
u32 cr;
u32 ifls;
u32 imsc;
u32 ris;
u32 mis;
u32 icr;
u32 dmacr;
u8 rsvd3[0xf94];
u32 periphid0;
u32 periphid1;
u32 periphid2;
u32 periphid3;
u32 cellid0;
u32 cellid1;
u32 cellid2;
u32 cellid3;
};
check_member(pl011_uart, cellid3, 0xffc);
/*************************************************************************/
/* Bit definitions from arm-trusted-firmware/include/drivers/arm/pl011.h */
/*************************************************************************/
/* Flag reg bits */
#define PL011_UARTFR_RI (1 << 8) /* Ring indicator */
#define PL011_UARTFR_TXFE (1 << 7) /* Transmit FIFO empty */
#define PL011_UARTFR_RXFF (1 << 6) /* Receive FIFO full */
#define PL011_UARTFR_TXFF (1 << 5) /* Transmit FIFO full */
#define PL011_UARTFR_RXFE (1 << 4) /* Receive FIFO empty */
#define PL011_UARTFR_BUSY (1 << 3) /* UART busy */
#define PL011_UARTFR_DCD (1 << 2) /* Data carrier detect */
#define PL011_UARTFR_DSR (1 << 1) /* Data set ready */
#define PL011_UARTFR_CTS (1 << 0) /* Clear to send */
#define PL011_UARTFR_TXFF_BIT 5 /* Transmit FIFO full bit in
UARTFR register */
#define PL011_UARTFR_RXFE_BIT 4 /* Receive FIFO empty bit in
UARTFR register */
#define PL011_UARTFR_BUSY_BIT 3 /* UART busy bit in UARTFR
register */
/* Control reg bits */
#define PL011_UARTCR_CTSEN (1 << 15) /* CTS hardware flow control
enable */
#define PL011_UARTCR_RTSEN (1 << 14) /* RTS hardware flow control
enable */
#define PL011_UARTCR_RTS (1 << 11) /* Request to send */
#define PL011_UARTCR_DTR (1 << 10) /* Data transmit ready. */
#define PL011_UARTCR_RXE (1 << 9) /* Receive enable */
#define PL011_UARTCR_TXE (1 << 8) /* Transmit enable */
#define PL011_UARTCR_LBE (1 << 7) /* Loopback enable */
#define PL011_UARTCR_UARTEN (1 << 0) /* UART Enable */
/* FIFO Enabled / No Parity / 8 Data bit / One Stop Bit */
#define PL011_LINE_CONTROL (PL011_UARTLCR_H_FEN | PL011_UARTLCR_H_WLEN_8)
/* Line Control Register Bits */
#define PL011_UARTLCR_H_SPS (1 << 7) /* Stick parity select */
#define PL011_UARTLCR_H_WLEN_8 (3 << 5)
#define PL011_UARTLCR_H_WLEN_7 (2 << 5)
#define PL011_UARTLCR_H_WLEN_6 (1 << 5)
#define PL011_UARTLCR_H_WLEN_5 (0 << 5)
#define PL011_UARTLCR_H_FEN (1 << 4) /* FIFOs Enable */
#define PL011_UARTLCR_H_STP2 (1 << 3) /* Two stop bits select */
#define PL011_UARTLCR_H_EPS (1 << 2) /* Even parity select */
#define PL011_UARTLCR_H_PEN (1 << 1) /* Parity Enable */
#define PL011_UARTLCR_H_BRK (1 << 0) /* Send break */
#endif /* ! __DRIVERS_UART_PL011_H */
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