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| author | Haavard Skinnemoen <haavard.skinnemoen@atmel.com> | 2008-05-02 15:32:57 +0200 |
|---|---|---|
| committer | Haavard Skinnemoen <haavard.skinnemoen@atmel.com> | 2008-05-27 15:27:30 +0200 |
| commit | caf83ea888a0220f41747d0b7748fa43b4a4bd49 (patch) | |
| tree | 3ac20bbef11f75760e772c74b07ef99f8a466908 /board/atmel | |
| parent | 0c16eed2189a190bd5655b33c029f809a9b31128 (diff) | |
| download | u-boot-caf83ea888a0220f41747d0b7748fa43b4a4bd49.tar.gz u-boot-caf83ea888a0220f41747d0b7748fa43b4a4bd49.tar.xz u-boot-caf83ea888a0220f41747d0b7748fa43b4a4bd49.zip | |
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>
Diffstat (limited to 'board/atmel')
| -rw-r--r-- | board/atmel/atngw100/u-boot.lds | 1 | ||||
| -rw-r--r-- | board/atmel/atstk1000/u-boot.lds | 1 |
2 files changed, 2 insertions, 0 deletions
diff --git a/board/atmel/atngw100/u-boot.lds b/board/atmel/atngw100/u-boot.lds index 3c878d8657..e736adf0fc 100644 --- a/board/atmel/atngw100/u-boot.lds +++ b/board/atmel/atngw100/u-boot.lds @@ -29,6 +29,7 @@ SECTIONS . = 0; _text = .; .text : { + *(.exception.text) *(.text) *(.text.*) } diff --git a/board/atmel/atstk1000/u-boot.lds b/board/atmel/atstk1000/u-boot.lds index f63bc4ff27..0d3b19c640 100644 --- a/board/atmel/atstk1000/u-boot.lds +++ b/board/atmel/atstk1000/u-boot.lds @@ -29,6 +29,7 @@ SECTIONS . = 0; _text = .; .text : { + *(.exception.text) *(.text) *(.text.*) } |