rtems support: Rudimentary test harness now working.

[yaffs2.git] / rtems / rtems-y-test / yaffs-rtems-test.c

diff --git a/rtems/rtems-y-test/yaffs-rtems-test.c b/rtems/rtems-y-test/yaffs-rtems-test.c
new file mode 100644 (file)
index 0000000..8e1c620
--- /dev/null
+++ b/rtems/rtems-y-test/yaffs-rtems-test.c
@@ -0,0 +1,191 @@
+/*
+ *  Simple test program -- demonstrating use of IMFS
+ */
+
+#include <bsp.h>
+
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include <rtems/libio.h>
+#include <yaffs/rtems_yaffs.h>
+
+#include "yaffs-rtems-flashsim.h"
+
+//#define YPATH "/yaffs_mount_pt/"
+#define YPATH ""
+
+void yaffs_bug_fn(const char *file_name, int line_no)
+{
+       printf("Yaffs bug at %s:%d\n", file_name, line_no);
+}
+
+int filesystem_init(const char *mount_target)
+{
+       struct yaffs_dev *device;
+       rtems_yaffs_default_os_context *os_context;
+       rtems_yaffs_mount_data mount_args;
+
+
+       rtems_filesystem_register(RTEMS_FILESYSTEM_TYPE_YAFFS,
+                                 rtems_yaffs_mount_handler);
+
+       // We mount the filesystem by passing an appropriate
+       // rtems_yaffs_mount_data as the last argument to mount(). mount_data is
+       // used to pass a yaffs_dev pointer by-value.
+
+
+       device = yaffs_rtems_flashsim_setup();
+
+       // Initialize callback storage for RTEMS's VFS inside the yaffs_dev.
+       os_context = malloc(sizeof(rtems_yaffs_default_os_context));
+       rtems_yaffs_initialize_default_os_context(os_context);
+
+       device->os_context = os_context;
+
+       mount_args.dev = device;
+
+       if (mount_and_make_target_path(NULL,
+                              NULL /*mount_target */,
+                              RTEMS_FILESYSTEM_TYPE_YAFFS,
+                              RTEMS_FILESYSTEM_READ_WRITE,
+                              &mount_args) < 0) {
+               return errno;
+       } else {
+               return 0;
+       }
+}
+
+
+void set_uint8_t_buffer(uint8_t *buf, uint32_t n, uint8_t start, uint8_t inc)
+{
+       while (n) {
+               *buf = start;
+               buf++;
+               start += inc;
+               n--;
+       }
+}
+
+int run_basic_file_test(void)
+{
+       int fd;
+       int ret;
+       uint8_t buf[100];
+       uint8_t buf2[100];
+
+       fd = open(YPATH"/test", O_RDWR | O_CREAT | O_TRUNC, 0666);
+       printf("open = %d\n", fd);
+
+       set_uint8_t_buffer(buf, sizeof(buf), 0xAA, 1);
+
+       ret = write(fd, buf, sizeof(buf));
+
+       printf("write returned %d\n", ret);
+
+       if (ret == -1)
+               perror("writing file");
+
+       ret = lseek(fd, 0, SEEK_END);
+
+       printf("lseek end ret = %d\n", ret);
+
+       ret = lseek(fd, 0, SEEK_SET);
+       printf("lseek start ret = %d\n", ret);
+
+       ret = read(fd, buf2, sizeof(buf2));
+
+       printf("reading file ret = %d\n", ret);
+
+       if (ret == -1)
+               perror("reading file");
+
+
+       return ret;
+
+#if 0
+
+
+   fd = open("test1", O_CREAT);
+   printf( "fcntl flags =0x%x\n", fcntl( fd, F_GETFL ) );
+   close(fd);
+
+   fd = open("test", O_RDONLY);
+   if (fd == -1) {
+     printf("Starting on the wrong foot....\n");
+     exit(-1);
+   }
+
+   printf( "fcntl flags =0x%x\n", fcntl( fd, F_GETFL ) );
+
+   fp = fdopen(fd, "r");
+   if (fp == NULL) {
+      printf("Nothing ever goes my way!\n");
+      close(fd);
+      exit(-1);
+   } else {
+      printf("Soon, I will be able to take over the world!\n");
+      fgets(str, 200, fp);
+      printf("%s\n", str);
+      fclose(fp);
+   }
+#endif
+}
+
+
+rtems_task Init(
+  rtems_task_argument ignored
+)
+{
+       int err;
+
+        printf("Starting\n");
+
+       err = filesystem_init(YPATH);
+
+       printf("filesystem_init(\"%s\") returned %d\n", YPATH, err);
+
+       run_basic_file_test();
+
+
+   exit(0);
+}
+
+
+
+
+#if 0
+So basically, we are registering our NAND-specific callbacks with YAFFS
+and registering the RTEMS-YAFFS filesystem callbacks with RTEMS.
+The rtems_filesystem_register() associates the mount() system call with
+a callback function to handle that system call, in this case
+rtems_yaffs_mount_handler().  rtems_yaffs_mount_handler() and
+RTEMS_FILESYSTEM_TYPE_YAFFS (just a string) are provided
+by the rtems-yaffs fork.
+
+mount_and_make_target_path() is provided by RTEMS: it combines a
+mkdir -p` with mount(), passing the mount_args to the
+previously-registered handler.
+#endif
+
+
+/* configuration information */
+
+/* NOTICE: the clock driver is explicitly disabled */
+#define CONFIGURE_APPLICATION_DOES_NOT_NEED_CLOCK_DRIVER
+#define CONFIGURE_APPLICATION_NEEDS_CONSOLE_DRIVER
+
+#define CONFIGURE_USE_IMFS_AS_BASE_FILESYSTEM
+#define CONFIGURE_MAXIMUM_FILE_DESCRIPTORS 6
+
+#define CONFIGURE_RTEMS_INIT_TASKS_TABLE
+#define CONFIGURE_MAXIMUM_TASKS 1
+
+#define CONFIGURE_MAXIMUM_SEMAPHORES        20
+
+#define CONFIGURE_INIT
+
+#include <rtems/confdefs.h>
+/* end of file */