Save return address before calling putchar

bootrom/rbootrom.S

@@ -73,8 +73,8 @@ print_hello:
 	beq  t0, zero, 1f	// Print message on HART 0 only
 	ret
 1:
-	// Identify bootroom
-	PUTC '\n'
+	mv s0, ra		// Save return address
+	PUTC '\n'		// Identify bootroom
 	PUTC '\r'
 	PUTC 'R'
 	PUTC 'B'
@@ -89,6 +89,41 @@ print_hello:
 	PUTC '1'
 	PUTC '.'
 	PUTC '0'
+	PUTC ' '
+	PUTC ':'
+	PUTC '^'
+	PUTC ')'
 	PUTC '\n'
 	PUTC '\r'
+
+	// Print jumping address
+	PUTC 'J'
+	PUTC 'u'
+	PUTC 'm'
+	PUTC 'p'
+	PUTC 'i'
+	PUTC 'n'
+	PUTC 'g'
+	PUTC ' '
+	PUTC 't'
+	PUTC 'o'
+	PUTC ' '
+	PUTC '0' // TODO: Compute from DRAM_BASE
+	PUTC 'x'
+	PUTC '8'
+	PUTC '0'
+	PUTC '0'
+	PUTC '0'
+	PUTC '_'
+	PUTC '0'
+	PUTC '0'
+	PUTC '0'
+	PUTC '0'
+	PUTC '.'
+	PUTC '.'
+	PUTC '.'
+	PUTC '\n'
+	PUTC '\r'
+
+	mv ra, s0		// Restore return address
 	ret