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-rw-r--r--include/hw/char/nrf51_uart.h78
1 files changed, 78 insertions, 0 deletions
diff --git a/include/hw/char/nrf51_uart.h b/include/hw/char/nrf51_uart.h
new file mode 100644
index 0000000000..e3ecb7c81c
--- /dev/null
+++ b/include/hw/char/nrf51_uart.h
@@ -0,0 +1,78 @@
+/*
+ * 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"
+
+#define UART_FIFO_LENGTH 6
+#define UART_BASE 0x40002000
+#define UART_SIZE 0x1000
+
+#define TYPE_NRF51_UART "nrf51_soc.uart"
+#define NRF51_UART(obj) OBJECT_CHECK(NRF51UARTState, (obj), TYPE_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)
+
+typedef 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;
+} NRF51UARTState;
+
+#endif