1 /* 2 * Copyright (C) 2016 Marvell International Ltd. 3 * 4 * SPDX-License-Identifier: BSD-3-Clause 5 * https://spdx.org/licenses 6 */ 7 8 #ifndef A3700_CONSOLE_H 9 #define A3700_CONSOLE_H 10 11 #include <drivers/console.h> 12 #include <platform_def.h> 13 14 /* MVEBU UART Registers */ 15 #define UART_RX_REG 0x00 16 #define UART_TX_REG 0x04 17 #define UART_CTRL_REG 0x08 18 #define UART_STATUS_REG 0x0c 19 #define UART_BAUD_REG 0x10 20 #define UART_POSSR_REG 0x14 21 22 /* FIFO Control Register bits */ 23 #define UARTFCR_FIFOMD_16450 (0 << 6) 24 #define UARTFCR_FIFOMD_16550 (1 << 6) 25 #define UARTFCR_RXTRIG_1 (0 << 6) 26 #define UARTFCR_RXTRIG_4 (1 << 6) 27 #define UARTFCR_RXTRIG_8 (2 << 6) 28 #define UARTFCR_RXTRIG_16 (3 << 6) 29 #define UARTFCR_TXTRIG_1 (0 << 4) 30 #define UARTFCR_TXTRIG_4 (1 << 4) 31 #define UARTFCR_TXTRIG_8 (2 << 4) 32 #define UARTFCR_TXTRIG_16 (3 << 4) 33 #define UARTFCR_DMAEN (1 << 3) /* Enable DMA mode */ 34 #define UARTFCR_TXCLR (1 << 2) /* Clear contents of Tx FIFO */ 35 #define UARTFCR_RXCLR (1 << 1) /* Clear contents of Rx FIFO */ 36 #define UARTFCR_FIFOEN (1 << 0) /* Enable the Tx/Rx FIFO */ 37 38 /* Line Control Register bits */ 39 #define UARTLCR_DLAB (1 << 7) /* Divisor Latch Access */ 40 #define UARTLCR_SETB (1 << 6) /* Set BREAK Condition */ 41 #define UARTLCR_SETP (1 << 5) /* Set Parity to LCR[4] */ 42 #define UARTLCR_EVEN (1 << 4) /* Even Parity Format */ 43 #define UARTLCR_PAR (1 << 3) /* Parity */ 44 #define UARTLCR_STOP (1 << 2) /* Stop Bit */ 45 #define UARTLCR_WORDSZ_5 0 /* Word Length of 5 */ 46 #define UARTLCR_WORDSZ_6 1 /* Word Length of 6 */ 47 #define UARTLCR_WORDSZ_7 2 /* Word Length of 7 */ 48 #define UARTLCR_WORDSZ_8 3 /* Word Length of 8 */ 49 50 /* Line Status Register bits */ 51 #define UARTLSR_TXFIFOFULL (1 << 11) /* Tx Fifo Full */ 52 #define UARTLSR_TXEMPTY (1 << 6) /* Tx Empty */ 53 #define UARTLSR_RXRDY (1 << 4) /* Rx Ready */ 54 55 /* UART Control Register bits */ 56 #define UART_CTRL_RXFIFO_RESET (1 << 14) 57 #define UART_CTRL_TXFIFO_RESET (1 << 15) 58 59 #ifndef __ASSEMBLER__ 60 61 #include <stdint.h> 62 63 /* 64 * Initialize a new a3700 console instance and register it with the console 65 * framework. The |console| pointer must point to storage that will be valid 66 * for the lifetime of the console, such as a global or static local variable. 67 * Its contents will be reinitialized from scratch. 68 */ 69 int console_a3700_register(uintptr_t baseaddr, uint32_t clock, uint32_t baud, 70 console_t *console); 71 72 #endif /*__ASSEMBLER__*/ 73 74 #endif /* A3700_CONSOLE_H */ 75