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| author | Graeme Russ <graeme.russ@gmail.com> | 2010-04-24 00:05:50 +1000 |
|---|---|---|
| committer | Wolfgang Denk <wd@denx.de> | 2010-05-06 00:17:37 +0200 |
| commit | 5204566e53a3c519e8795480d056635bc64b11cd (patch) | |
| tree | 741a832ce94d7315a6dbbf02e3ca498c568624dc | |
| parent | 95ffaba39042064c5eb68404894fd6b0f1d6a3e3 (diff) | |
| download | u-boot-imx-5204566e53a3c519e8795480d056635bc64b11cd.zip u-boot-imx-5204566e53a3c519e8795480d056635bc64b11cd.tar.gz u-boot-imx-5204566e53a3c519e8795480d056635bc64b11cd.tar.bz2 | |
sc520: Allow boards to override udelay
If the board has a high precision mico-second timer, it maked sense to use
it instead of the on-chip one
Signed-off-by: Graeme Russ <graeme.russ@gmail.com>
| -rw-r--r-- | arch/i386/cpu/sc520/sc520_timer.c | 4 | ||||
| -rw-r--r-- | arch/i386/include/asm/ic/sc520.h | 1 |
2 files changed, 5 insertions, 0 deletions
diff --git a/arch/i386/cpu/sc520/sc520_timer.c b/arch/i386/cpu/sc520/sc520_timer.c index eca48e0..d5617e9 100644 --- a/arch/i386/cpu/sc520/sc520_timer.c +++ b/arch/i386/cpu/sc520/sc520_timer.c @@ -69,7 +69,11 @@ int timer_init(void) return 0; } +/* Allow boards to override udelay implementation */ void __udelay(unsigned long usec) + __attribute__((weak, alias("sc520_udelay"))); + +void sc520_udelay(unsigned long usec) { int m = 0; long u; diff --git a/arch/i386/include/asm/ic/sc520.h b/arch/i386/include/asm/ic/sc520.h index 57c9904..20384a4 100644 --- a/arch/i386/include/asm/ic/sc520.h +++ b/arch/i386/include/asm/ic/sc520.h @@ -28,6 +28,7 @@ void init_sc520(void); unsigned long init_sc520_dram(void); +void sc520_udelay(unsigned long usec); /* Memory mapped configuration registers */ typedef struct sc520_mmcr { |