diff options
Diffstat (limited to 'bsps/riscv/riscv/include/bsp/fe310-uart.h')
| -rw-r--r-- | bsps/riscv/riscv/include/bsp/fe310-uart.h | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/bsps/riscv/riscv/include/bsp/fe310-uart.h b/bsps/riscv/riscv/include/bsp/fe310-uart.h new file mode 100644 index 0000000000..c6c6fcb876 --- /dev/null +++ b/bsps/riscv/riscv/include/bsp/fe310-uart.h @@ -0,0 +1,61 @@ +/* + * SPDX-License-Identifier: BSD-2-Clause + * + * Copyright (C) 2019 Pragnesh Patel <pragnesh.patel@sifive.com> + * Copyright (c) 2019 Sachin Ghadi <sachin.ghadi@sifive.com> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef FE310_UART_H +#define FE310_UART_H + +#define TXRXREADY (1 << 31) + +#include <rtems/termiostypes.h> +#include <rtems/irq.h> + +typedef struct { + uint32_t txdata; + uint32_t rxdata; + uint32_t txctrl; + uint32_t rxctrl; + uint32_t ie; + uint32_t ip; + uint32_t div; +} fe310_uart_t; + +/* Low-level driver specific data structure */ +typedef struct { + rtems_termios_device_context base; + const char *device_name; + volatile fe310_uart_t *regs; +} fe310_uart_context; + +int fe310_uart_read(rtems_termios_device_context *base); +void fe310_console_putchar(rtems_termios_device_context * context,char c); + +extern const rtems_termios_device_handler fe310_uart_handler; + +extern fe310_uart_context driver_context; + +#endif /* FE310_UART_H */ |