From 685a694f0653b7db49f663b2cd6953695214fb30 Mon Sep 17 00:00:00 2001 From: Mike Frysinger Date: Wed, 3 Jun 2009 00:33:31 +0000 Subject: [PATCH] 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 --- arch/blackfin/kernel/early_printk.c | 16 +++------------- 1 file changed, 3 insertions(+), 13 deletions(-) diff --git a/arch/blackfin/kernel/early_printk.c b/arch/blackfin/kernel/early_printk.c index c8ad051742e2..3302719173ca 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 -- 2.20.1