1 files changed, 39 insertions, 0 deletions
diff --git a/firmware/microblaze/usrp2p/bootloader_utils.c b/firmware/microblaze/usrp2p/bootloader_utils.c
new file mode 100644
index 000000000..fadd225bb
--- /dev/null
+++ b/firmware/microblaze/usrp2p/bootloader_utils.c
@@ -0,0 +1,39 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2010 Ettus Research LLC
+ *
+ */
+
+//contains routines for loading programs from Flash. depends on Flash libraries.
+//also contains routines for reading / writing EEPROM flags for the bootloader
+#include <stdbool.h>
+#include <string.h>
+#include <bootloader_utils.h>
+#include <spi_flash.h>
+
+int is_valid_fpga_image(uint32_t addr) {
+	uint8_t imgbuf[64];
+	spi_flash_read(addr, 64, imgbuf);
+	//we're just looking for leading 0xFF padding, followed by the sync bytes 0xAA 0x99
+	int i = 0;
+	for(i; i<63; i++) {
+		if(imgbuf[i] == 0xFF) continue;
+		if(imgbuf[i] == 0xAA && imgbuf[i+1] == 0x99) return 1;
+	}
+	
+	return 0;
+}
+
+int is_valid_fw_image(uint32_t addr) {
+	static const uint8_t fwheader[] = {0xB0, 0x00, 0x00, 0x00, 0xB8, 0x08}; //just lookin for a jump to anywhere located at the reset vector
+	uint8_t buf[12];
+	spi_flash_read(addr, 6, buf);
+	return memcmp(buf, fwheader, 6) == 0;
+}
+
+void start_program(uint32_t addr)
+{
+	memcpy(0x00000000, addr+0x00000000, 36); //copy the whole vector table, with the reset vector, into boot RAM
+	typedef void (*fptr_t)(void);
+	(*(fptr_t) 0x00000000)();	// most likely no return
+}