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Diffstat (limited to 'package/uboot-lantiq/files/cpu/mips/danube-clock.c')
| -rw-r--r-- | package/uboot-lantiq/files/cpu/mips/danube-clock.c | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/package/uboot-lantiq/files/cpu/mips/danube-clock.c b/package/uboot-lantiq/files/cpu/mips/danube-clock.c new file mode 100644 index 0000000000..4219f8f921 --- /dev/null +++ b/package/uboot-lantiq/files/cpu/mips/danube-clock.c @@ -0,0 +1,65 @@ +/* + * (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 +} + |