| /* |
| * nRF51 SoC UART emulation |
| * |
| * Copyright (c) 2018 Julia Suvorova <jusual@mail.ru> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 or |
| * (at your option) any later version. |
| */ |
| |
| #ifndef NRF51_UART_H |
| #define NRF51_UART_H |
| |
| #include "hw/sysbus.h" |
| #include "chardev/char-fe.h" |
| #include "hw/registerfields.h" |
| #include "qom/object.h" |
| |
| #define UART_FIFO_LENGTH 6 |
| #define UART_SIZE 0x1000 |
| |
| #define TYPE_NRF51_UART "nrf51_soc.uart" |
| OBJECT_DECLARE_SIMPLE_TYPE(NRF51UARTState, NRF51_UART) |
| |
| REG32(UART_STARTRX, 0x000) |
| REG32(UART_STOPRX, 0x004) |
| REG32(UART_STARTTX, 0x008) |
| REG32(UART_STOPTX, 0x00C) |
| REG32(UART_SUSPEND, 0x01C) |
| |
| REG32(UART_CTS, 0x100) |
| REG32(UART_NCTS, 0x104) |
| REG32(UART_RXDRDY, 0x108) |
| REG32(UART_TXDRDY, 0x11C) |
| REG32(UART_ERROR, 0x124) |
| REG32(UART_RXTO, 0x144) |
| |
| REG32(UART_INTEN, 0x300) |
| FIELD(UART_INTEN, CTS, 0, 1) |
| FIELD(UART_INTEN, NCTS, 1, 1) |
| FIELD(UART_INTEN, RXDRDY, 2, 1) |
| FIELD(UART_INTEN, TXDRDY, 7, 1) |
| FIELD(UART_INTEN, ERROR, 9, 1) |
| FIELD(UART_INTEN, RXTO, 17, 1) |
| REG32(UART_INTENSET, 0x304) |
| REG32(UART_INTENCLR, 0x308) |
| REG32(UART_ERRORSRC, 0x480) |
| REG32(UART_ENABLE, 0x500) |
| REG32(UART_PSELRTS, 0x508) |
| REG32(UART_PSELTXD, 0x50C) |
| REG32(UART_PSELCTS, 0x510) |
| REG32(UART_PSELRXD, 0x514) |
| REG32(UART_RXD, 0x518) |
| REG32(UART_TXD, 0x51C) |
| REG32(UART_BAUDRATE, 0x524) |
| REG32(UART_CONFIG, 0x56C) |
| |
| struct NRF51UARTState { |
| SysBusDevice parent_obj; |
| |
| MemoryRegion iomem; |
| CharBackend chr; |
| qemu_irq irq; |
| guint watch_tag; |
| |
| uint8_t rx_fifo[UART_FIFO_LENGTH]; |
| unsigned int rx_fifo_pos; |
| unsigned int rx_fifo_len; |
| |
| uint32_t reg[0x56C]; |
| |
| bool rx_started; |
| bool tx_started; |
| bool pending_tx_byte; |
| bool enabled; |
| }; |
| |
| #endif |
