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authorMike Frysinger <vapier@gentoo.org>2009-06-03 00:33:31 +0000
committerMike Frysinger <vapier@gentoo.org>2009-06-12 06:12:01 -0400
commit685a694f0653b7db49f663b2cd6953695214fb30 (patch)
tree2b75af85e5be0f32d521e66c12a9412ea55fb5c4 /arch/blackfin
parentf1db88d2a7f1c92284e64f5dbb5c7a316a22576d (diff)
downloadlinux-2.6.34-ux500-685a694f0653b7db49f663b2cd6953695214fb30.tar.gz
Blackfin: convert early_printk EVT init to a loop
The EVT registers are all contiguous in the memory map, so using a loop to initialize them all rather than hardcoding the list results in much better generated code (a hardware loop rather than a whole bunch of individual loads). Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Diffstat (limited to 'arch/blackfin')
-rw-r--r--arch/blackfin/kernel/early_printk.c16
1 files changed, 3 insertions, 13 deletions
diff --git a/arch/blackfin/kernel/early_printk.c b/arch/blackfin/kernel/early_printk.c
index c8ad051742e..3302719173c 100644
--- a/arch/blackfin/kernel/early_printk.c
+++ b/arch/blackfin/kernel/early_printk.c
@@ -178,25 +178,15 @@ int __init setup_early_printk(char *buf)
asmlinkage void __init init_early_exception_vectors(void)
{
+ u32 evt;
SSYNC();
/* cannot program in software:
* evt0 - emulation (jtag)
* evt1 - reset
*/
- bfin_write_EVT2(early_trap);
- bfin_write_EVT3(early_trap);
- bfin_write_EVT5(early_trap);
- bfin_write_EVT6(early_trap);
- bfin_write_EVT7(early_trap);
- bfin_write_EVT8(early_trap);
- bfin_write_EVT9(early_trap);
- bfin_write_EVT10(early_trap);
- bfin_write_EVT11(early_trap);
- bfin_write_EVT12(early_trap);
- bfin_write_EVT13(early_trap);
- bfin_write_EVT14(early_trap);
- bfin_write_EVT15(early_trap);
+ for (evt = EVT2; evt <= EVT15; evt += 4)
+ bfin_write32(evt, early_trap);
CSYNC();
/* Set all the return from interrupt, exception, NMI to a known place