avr32: Use the same entry point for reset and exception handling
Since the reset vector is always aligned to a very large boundary, we
can save a couple of KB worth of alignment padding by placing the
exception vectors at the same address.
Deciding which one it is is easy: If we're handling an exception, the
CPU is in Exception mode. If we're starting up after reset, the CPU is
in Supervisor mode. So this adds a very minimal overhead to the reset
path (only executed once) and the exception handling path (normally
never executed at all.)
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
diff --git a/board/atmel/atstk1000/u-boot.lds b/board/atmel/atstk1000/u-boot.lds
index f63bc4f..0d3b19c 100644
--- a/board/atmel/atstk1000/u-boot.lds
+++ b/board/atmel/atstk1000/u-boot.lds
@@ -29,6 +29,7 @@
. = 0;
_text = .;
.text : {
+ *(.exception.text)
*(.text)
*(.text.*)
}