mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-11-24 16:11:54 +02:00
66 lines
1.6 KiB
C
66 lines
1.6 KiB
C
|
/*
|
||
|
|
* (C) Copyright 2003
|
||
|
|
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
|
||
|
|
*
|
||
|
|
* See file CREDITS for list of people who contributed to this
|
||
|
|
* project.
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or
|
||
|
|
* modify it under the terms of the GNU General Public License as
|
||
|
|
* published by the Free Software Foundation; either version 2 of
|
||
|
|
* the License, or (at your option) any later version.
|
||
|
|
*
|
||
|
|
* This program is distributed in the hope that it will be useful,
|
||
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
* GNU General Public License for more details.
|
||
|
|
*
|
||
|
|
* You should have received a copy of the GNU General Public License
|
||
|
|
* along with this program; if not, write to the Free Software
|
||
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
|
||
|
|
* MA 02111-1307 USA
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <common.h>
|
||
|
|
#include <asm/danube.h>
|
||
|
|
|
||
|
|
ulong ifx_get_ddr_hz(void)
|
||
|
|
{
|
||
|
|
static const ulong ddr_freq[] = {166666667,133333333,111111111,83333333};
|
||
|
|
return ddr_freq[((*DANUBE_CGU_SYS) & 0x3)];
|
||
|
|
}
|
||
|
|
|
||
|
|
ulong ifx_get_cpuclk(void)
|
||
|
|
{
|
||
|
|
#ifdef CONFIG_USE_EMULATOR
|
||
|
|
return EMULATOR_CPU_SPEED;
|
||
|
|
#else //NOT CONFIG_USE_EMULATOR
|
||
|
|
unsigned int ddr_clock=ifx_get_ddr_hz();
|
||
|
|
switch((*DANUBE_CGU_SYS) & 0xc){
|
||
|
|
case 0:
|
||
|
|
default:
|
||
|
|
return 323333333;
|
||
|
|
case 4:
|
||
|
|
return ddr_clock;
|
||
|
|
case 8:
|
||
|
|
return ddr_clock << 1;
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
ulong get_bus_freq(ulong dummy)
|
||
|
|
{
|
||
|
|
#ifdef CONFIG_USE_EMULATOR
|
||
|
|
unsigned int clkCPU;
|
||
|
|
clkCPU = ifx_get_cpuclk();
|
||
|
|
return clkCPU >> 2;
|
||
|
|
#else //NOT CONFIG_USE_EMULATOR
|
||
|
|
unsigned int ddr_clock=ifx_get_ddr_hz();
|
||
|
|
if ((*DANUBE_CGU_SYS) & 0x40){
|
||
|
|
return ddr_clock >> 1;
|
||
|
|
}
|
||
|
|
return ddr_clock;
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|