建立工程，成功创建两个虚拟串口

2023-06-21 18:00:56 +08:00
commit 3604192d8f
872 changed files with 428764 additions and 0 deletions
--- a/source/OpenAMP/libmetal/lib/system/linux/sys.h
+++ b/source/OpenAMP/libmetal/lib/system/linux/sys.h
@@ -0,0 +1,145 @@
+/*
+ * Copyright (c) 2015, Xilinx Inc. and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+/*
+ * @file	linux/sys.h
+ * @brief	Linux system primitives for libmetal.
+ */
+
+#ifndef __METAL_SYS__H__
+#error "Include metal/sys.h instead of metal/linux/sys.h"
+#endif
+
+#ifndef __METAL_LINUX_SYS__H__
+#define __METAL_LINUX_SYS__H__
+
+#include <metal/errno.h>
+#include <fcntl.h>
+#include <libgen.h>
+#include <limits.h>
+#include <pthread.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <syslog.h>
+#include <sys/file.h>
+#include <sys/mman.h>
+#include <sys/stat.h>
+#include <sys/syscall.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <unistd.h>
+
+#include <linux/futex.h>
+#include <sysfs/libsysfs.h>
+#ifdef HAVE_HUGETLBFS_H
+#include <hugetlbfs.h>
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define METAL_INVALID_VADDR     NULL
+#define MAX_PAGE_SIZES		32
+
+struct metal_device;
+
+/** Structure of shared page or hugepage sized data. */
+struct metal_page_size {
+	/** Page size. */
+	size_t	page_size;
+
+	/** Page shift. */
+	unsigned long page_shift;
+
+	/** Path to hugetlbfs (or tmpfs) mount point. */
+	char path[PATH_MAX];
+
+	/** Flags to use for mmap. */
+	int mmap_flags;
+};
+
+/** Structure of linux specific libmetal runtime state. */
+struct metal_state {
+
+	/** Common (system independent) data. */
+	struct metal_common_state common;
+
+	/** file descriptor for shared data. */
+	int			data_fd;
+
+	/** system page size. */
+	unsigned long		page_size;
+
+	/** system page shift. */
+	unsigned long		page_shift;
+
+	/** sysfs mount point. */
+	const char		*sysfs_path;
+
+	/** sysfs mount point. */
+	const char		*tmp_path;
+
+	/** available page sizes. */
+	struct metal_page_size	page_sizes[MAX_PAGE_SIZES];
+
+	/** number of available page sizes. */
+	int			num_page_sizes;
+
+	/** File descriptor for /proc/self/pagemap (or -1). */
+	int			pagemap_fd;
+};
+
+#ifdef METAL_INTERNAL
+extern int metal_linux_bus_init(void);
+extern void metal_linux_bus_finish(void);
+
+extern int metal_open(const char *path, int shm);
+extern int metal_open_unlinked(const char *path, int shm);
+extern int metal_mktemp(char *template, int fifo);
+extern int metal_mktemp_unlinked(char *template);
+
+extern int metal_map(int fd, off_t offset, size_t size, int expand,
+		     int flags, void **result);
+extern int metal_unmap(void *mem, size_t size);
+extern int metal_mlock(void *mem, size_t size);
+
+extern void metal_randomize_string(char *template);
+extern void metal_mktemp_template(char template[PATH_MAX],
+				  const char *name);
+extern int metal_virt2phys(void *addr, unsigned long *phys);
+
+/**
+ * @brief	Read a device tree property of a device
+ *
+ * @param[in]	device metal_device of the intended DT node
+ * @param[in]	property_name name of the property to be read
+ * @param[out]	output output buffer to store read data
+ * @param[in]	len number of bytes to be read
+ * @return	0 on success, or -errno on error.
+ */
+extern int metal_linux_get_device_property(struct metal_device *device,
+					   const char *property_name,
+					   void *output, int len);
+
+#define metal_for_each_page_size_up(ps)					\
+	for ((ps) = &_metal.page_sizes[0];				\
+	     (ps) <= &_metal.page_sizes[_metal.num_page_sizes - 1];	\
+	     (ps)++)
+
+#define metal_for_each_page_size_down(ps)				\
+	for ((ps) = &_metal.page_sizes[_metal.num_page_sizes - 1];	\
+	     (ps) >= &_metal.page_sizes[0];				\
+	     (ps)--)
+
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __METAL_LINUX_SYS__H__ */