summaryrefslogtreecommitdiff
path: root/payloads/libpayload/arch/powerpc
diff options
context:
space:
mode:
Diffstat (limited to 'payloads/libpayload/arch/powerpc')
-rw-r--r--payloads/libpayload/arch/powerpc/timer.c76
1 files changed, 7 insertions, 69 deletions
diff --git a/payloads/libpayload/arch/powerpc/timer.c b/payloads/libpayload/arch/powerpc/timer.c
index ba824b0d57..fb181a4d63 100644
--- a/payloads/libpayload/arch/powerpc/timer.c
+++ b/payloads/libpayload/arch/powerpc/timer.c
@@ -33,7 +33,6 @@
*/
#include <libpayload.h>
-// #include <arch/rdtsc.h>
/**
* @ingroup arch
@@ -48,80 +47,19 @@ u32 cpu_khz;
*/
unsigned int get_cpu_speed(void)
{
-#if 0
- unsigned long long start, end;
-
- /* Set up the PPC port - disable the speaker, enable the T2 gate. */
- outb((inb(0x61) & ~0x02) | 0x01, 0x61);
-
- /* Set the PIT to Mode 0, counter 2, word access. */
- outb(0xB0, 0x43);
-
- /* Load the counter with 0xffff. */
- outb(0xff, 0x42);
- outb(0xff, 0x42);
-
- /* Read the number of ticks during the period. */
- start = rdtsc();
- while (!(inb(0x61) & 0x20)) ;
- end = rdtsc();
-
- /*
- * The clock rate is 1193180 Hz, the number of milliseconds for a
- * period of 0xffff is 1193180 / (0xFFFF * 1000) or .0182.
- * Multiply that by the number of measured clocks to get the kHz value.
- */
- cpu_khz = (unsigned int)((end - start) * 1193180U / (1000 * 0xffff));
-#else
+ /* FIXME */
cpu_khz = 200 * 1024;
-#endif
return cpu_khz;
}
-static inline void _delay(unsigned long long delta)
-{
-#if 0
- unsigned long long timeout = rdtsc() + delta;
- while (rdtsc() < timeout) ;
-#endif
-}
-
-/**
- * Delay for a specified number of nanoseconds.
- *
- * @param n Number of nanoseconds to delay for.
- */
-void ndelay(unsigned int n)
-{
- _delay(n * cpu_khz / 1000000);
-}
-
-/**
- * Delay for a specified number of microseconds.
- *
- * @param n Number of microseconds to delay for.
- */
-void udelay(unsigned int n)
+uint64_t timer_hz(void)
{
- _delay(n * cpu_khz / 1000);
+ /* FIXME */
+ return 0;
}
-/**
- * Delay for a specified number of milliseconds.
- *
- * @param m Number of milliseconds to delay for.
- */
-void mdelay(unsigned int m)
-{
- _delay(m * cpu_khz);
-}
-
-/**
- * Delay for a specified number of seconds.
- *
- * @param s Number of seconds to delay for.
- */
-void delay(unsigned int s)
+uint64_t timer_raw_value(void)
{
- _delay(s * cpu_khz * 1000);
+ /* FIXME */
+ return 0;
}