a try to add support of FreeRTOS riscV-64 (k210 cpu). first step

1 files changed, 26 insertions, 0 deletions

diff --git a/emu/FreeRTOS/devfs.c b/emu/FreeRTOS/devfs.c
new file mode 100644
index 0000000..d697d7b
--- /dev/null
+++ b/emu/FreeRTOS/devfs.c
@@ -0,0 +1,26 @@
+#include "devfs-posix.c"
+
+#include	<linux/hdreg.h>
+#include	<linux/fs.h>
+#include	<sys/ioctl.h>
+
+static vlong
+osdisksize(int fd)
+{
+	uvlong u64;
+	long l;
+	struct hd_geometry geo;
+	
+	memset(&geo, 0, sizeof geo);
+	l = 0;
+	u64 = 0;
+#ifdef BLKGETSIZE64
+	if(ioctl(fd, BLKGETSIZE64, &u64) >= 0)
+		return u64;
+#endif
+	if(ioctl(fd, BLKGETSIZE, &l) >= 0)
+		return l*512;
+	if(ioctl(fd, HDIO_GETGEO, &geo) >= 0)
+		return (vlong)geo.heads*geo.sectors*geo.cylinders*512;
+	return 0;
+}