diff options
| author | Stefan Reinauer <stepan@openbios.org> | 2005-12-04 17:50:32 +0000 |
|---|---|---|
| committer | Stefan Reinauer <stepan@openbios.org> | 2005-12-04 17:50:32 +0000 |
| commit | 453dfdfdafbc2d10ec9289699a22e8c4fd8c2ad6 (patch) | |
| tree | ed7e246a34073a368c8195bd0748fa9daffb4a01 /src/pc80 | |
| parent | a09ab6dc531aa7d14706b6a912e5feb476426ab2 (diff) | |
implement io based udelay function for all mainboards that lack an apic
timer (or just failed otherwise due to missing udelay)
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2131 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'src/pc80')
| -rw-r--r-- | src/pc80/Config.lb | 5 | ||||
| -rw-r--r-- | src/pc80/udelay_io.c | 9 |
2 files changed, 14 insertions, 0 deletions
diff --git a/src/pc80/Config.lb b/src/pc80/Config.lb index 1750a83bde..7eb32b239f 100644 --- a/src/pc80/Config.lb +++ b/src/pc80/Config.lb @@ -1,11 +1,16 @@ uses CONFIG_IDE uses CONFIG_CONSOLE_VGA +uses CONFIG_UDELAY_IO object mc146818rtc.o object isa-dma.o object i8259.o #object udelay_timer2.o CONFIG_UDELAY_TIMER2 +if CONFIG_UDELAY_IO + object udelay_io.o +end + if CONFIG_IDE dir ide end diff --git a/src/pc80/udelay_io.c b/src/pc80/udelay_io.c new file mode 100644 index 0000000000..870af079cf --- /dev/null +++ b/src/pc80/udelay_io.c @@ -0,0 +1,9 @@ +#include <arch/io.h> + +void udelay(int usecs) +{ + int i; + for(i = 0; i < usecs; i++) + outb(i&0xff, 0x80); +} + |