diff options
Diffstat (limited to 'package/uboot-lantiq/files/cpu/mips/danube')
| -rw-r--r-- | package/uboot-lantiq/files/cpu/mips/danube/Makefile | 46 | ||||
| -rw-r--r-- | package/uboot-lantiq/files/cpu/mips/danube/clock.c | 65 | ||||
| -rw-r--r-- | package/uboot-lantiq/files/cpu/mips/danube/ifx_cache.S | 60 |
3 files changed, 171 insertions, 0 deletions
diff --git a/package/uboot-lantiq/files/cpu/mips/danube/Makefile b/package/uboot-lantiq/files/cpu/mips/danube/Makefile new file mode 100644 index 000000000..c48d02eaa --- /dev/null +++ b/package/uboot-lantiq/files/cpu/mips/danube/Makefile @@ -0,0 +1,46 @@ +######################################################################### +# +# (C) Copyright 2000-2006 +# 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 $(TOPDIR)/config.mk + +LIB = $(obj)lib$(SOC).a + +COBJS = clock.o + +SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c) +OBJS := $(addprefix $(obj),$(SOBJS) $(COBJS)) + +all: $(obj).depend $(LIB) + +$(LIB): $(OBJS) + $(AR) $(ARFLAGS) $@ $(OBJS) + +######################################################################### + +# defines $(obj).depend target +include $(SRCTREE)/rules.mk + +sinclude $(obj).depend + +######################################################################### 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 000000000..4219f8f92 --- /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 +} + diff --git a/package/uboot-lantiq/files/cpu/mips/danube/ifx_cache.S b/package/uboot-lantiq/files/cpu/mips/danube/ifx_cache.S new file mode 100644 index 000000000..fc482dcd6 --- /dev/null +++ b/package/uboot-lantiq/files/cpu/mips/danube/ifx_cache.S @@ -0,0 +1,60 @@ + +#define IFX_CACHE_EXTRA_INVALID_TAG \ + mtc0 zero, CP0_TAGLO, 1; \ + mtc0 zero, CP0_TAGLO, 2; \ + mtc0 zero, CP0_TAGLO, 3; \ + mtc0 zero, CP0_TAGLO, 4; + +#define IFX_CACHE_EXTRA_OPERATION \ + /* set WST bit */ \ + mfc0 a0, CP0_ECC; \ + li a1, ECCF_WST; \ + or a0, a1; \ + mtc0 a0, CP0_ECC; \ + \ + li a0, K0BASE; \ + move a2, t2; /* icacheSize */ \ + move a3, t4; /* icacheLineSize */ \ + move a1, a2; \ + icacheop(a0,a1,a2,a3,(Index_Store_Tag_I)); \ + \ + /* clear WST bit */ \ + mfc0 a0, CP0_ECC; \ + li a1, ~ECCF_WST; \ + and a0, a1; \ + mtc0 a0, CP0_ECC; \ + \ + /* 1: initialise dcache tags. */ \ + \ + /* cache line size */ \ + li a2, CFG_CACHELINE_SIZE; \ + /* kseg0 mem address */ \ + li a1, 0; \ + li a3, CFG_CACHE_SETS * CFG_CACHE_WAYS; \ +1: \ + /* store tag (invalid, not locked) */ \ + cache 0x8, 0(a1); \ + cache 0x9, 0(a1); \ + \ + add a3, -1; \ + bne a3, zero, 1b; \ + add a1, a2; \ + \ + /* set WST bit */ \ + mfc0 a0, CP0_ECC; \ + li a1, ECCF_WST; \ + or a0, a1; \ + mtc0 a0, CP0_ECC; \ + \ + li a0, K0BASE; \ + move a2, t3; /* dcacheSize */ \ + move a3, t5; /* dcacheLineSize */ \ + move a1, a2; \ + icacheop(a0,a1,a2,a3,(Index_Store_Tag_D)); \ + \ + /* clear WST bit */ \ + mfc0 a0, CP0_ECC; \ + li a1, ~ECCF_WST; \ + and a0, a1; \ + mtc0 a0, CP0_ECC; + |