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#include <stdint.h>
#include "../../../northbridge/ibm/cpc710/cpc710.h"
/*
* Bus clock jumper settings on SIOR0 27:28
*/
static uint32_t BusClockSpeed[] = {
66000000, /* 00 */
83000000, /* 01 */
100000000, /* 10 */
133000000 /* 11 */
};
/*
* Timer frequency is 1/4 of the bus clock frequency.
*
* For the briQ, bits 27:28 of SIOR0 encode bus clock frequency.
*/
unsigned long
get_timer_freq(void)
{
uint32_t sior0 = getCPC710(CPC710_SDRAM0_SIOR0);
return BusClockSpeed[(sior0 >> 3) & 0x2] / 4;
}
/*
* Frequency of PCI bus.
*
* For the briQ, bit 29 of SIOR0 is 66MHz enable (active low).
*/
unsigned long
get_pci_bus_freq(void)
{
uint32_t sior0 = getCPC710(CPC710_SDRAM0_SIOR0);
if (sior0 & 0x4 == 0x4)
return 33000000;
return 66000000;
}
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