GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

source/trusted-firmware/trusted-firmware-a-2.8/include/drivers/cadence/cdns_uart.h

@@ -0,0 +1,44 @@
+/*
+ * Copyright (c) 2016-2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef CDNS_UART_H
+#define CDNS_UART_H
+
+#include <drivers/console.h>
+
+/* This is very minimalistic and will only work in QEMU.  */
+
+/* CADENCE Registers */
+#define R_UART_CR	0
+#define R_UART_CR_RXRST	(1 << 0) /* RX logic reset */
+#define R_UART_CR_TXRST	(1 << 1) /* TX logic reset */
+#define R_UART_CR_RX_EN	(1 << 2) /* RX enabled */
+#define R_UART_CR_TX_EN	(1 << 4) /* TX enabled */
+
+#define R_UART_SR		0x2C
+#define UART_SR_INTR_REMPTY_BIT	1
+#define UART_SR_INTR_TFUL_BIT	4
+#define UART_SR_INTR_TEMPTY_BIT	3
+
+#define R_UART_TX	0x30
+#define R_UART_RX	0x30
+
+#ifndef __ASSEMBLER__
+
+#include <stdint.h>
+
+/*
+ * Initialize a new Cadence console instance and register it with the console
+ * framework. The |console| pointer must point to storage that will be valid
+ * for the lifetime of the console, such as a global or static local variable.
+ * Its contents will be reinitialized from scratch.
+ */
+int console_cdns_register(uintptr_t baseaddr, uint32_t clock, uint32_t baud,
+			  console_t *console);
+
+#endif /*__ASSEMBLER__*/
+
+#endif /* CDNS_UART_H */