1 files changed, 74 insertions, 0 deletions
diff --git a/util/flash_and_burn/m29f400bt.h b/util/flash_and_burn/m29f400bt.h
new file mode 100644
index 0000000000..3d1799f4e2
--- /dev/null
+++ b/util/flash_and_burn/m29f400bt.h
@@ -0,0 +1,74 @@
+#ifndef __M29F400BT_H__
+#define __M29F400BT_H__ 1
+
+#include <stdio.h>
+
+extern int probe_m29f400bt (struct flashchip * flash);
+extern int erase_m29f400bt (struct flashchip * flash);
+extern int block_erase_m29f400bt (volatile char * bios, volatile char * dst);
+extern int write_m29f400bt (struct flashchip * flash, unsigned char * buf);
+extern int write_linuxbios_m29f400bt (struct flashchip * flash, unsigned char * buf);
+
+extern __inline__ void toggle_ready_m29f400bt (volatile char * dst)
+{
+	unsigned int i = 0;
+	char tmp1, tmp2;
+
+	tmp1 = *dst & 0x40;
+
+	while (i++ < 0xFFFFFF) {
+		tmp2 = *dst & 0x40;
+		if (tmp1 == tmp2) {
+			break;
+		}
+		tmp1 = tmp2;
+	}
+}
+
+extern __inline__ void data_polling_m29f400bt (volatile char * dst, unsigned char data)
+{
+	unsigned int i = 0;
+	char tmp;
+
+	data &= 0x80;
+
+	while (i++ < 0xFFFFFF) {
+		tmp = *dst & 0x80;
+		if (tmp == data) {
+			break;
+		}
+	}
+}
+
+extern __inline__ void protect_m29f400bt (volatile char * bios)
+{
+	*(volatile char *) (bios + 0xAAA) = 0xAA;
+	*(volatile char *) (bios + 0x555) = 0x55;
+	*(volatile char *) (bios + 0xAAA) = 0xA0;
+
+	usleep(200);
+}
+
+extern __inline__ void write_page_m29f400bt (volatile char * bios, char * src, volatile char * dst,
+					 int page_size)
+{
+	int i;
+	
+	for (i = 0; i < page_size; i++) {
+		*(volatile char *) (bios + 0xAAA) = 0xAA;
+		*(volatile char *) (bios + 0x555) = 0x55;
+		*(volatile char *) (bios + 0xAAA) = 0xA0;
+
+		/* transfer data from source to destination */
+		*dst = *src;
+		//*(volatile char *) (bios) = 0xF0;
+		//usleep(5);
+		toggle_ready_m29f400bt(dst);
+		printf("Value in the flash at address %p = %#x, want %#x\n",(char *)(dst-bios), *dst, *src);
+		dst++;
+		src++;
+	}
+
+}
+
+#endif /* !__M29F400BT_H__ */