move ifxmips uboot to package/

[openwrt-10.03/.git] / package / uboot-ifxmips / files / cpu / mips / danube / ifx_clock.c

diff --git a/package/uboot-ifxmips/files/cpu/mips/danube/ifx_clock.c b/package/uboot-ifxmips/files/cpu/mips/danube/ifx_clock.c
new file mode 100644 (file)
index 0000000..0a1cdac
--- /dev/null
+++ b/package/uboot-ifxmips/files/cpu/mips/danube/ifx_clock.c
@@ -0,0 +1,91 @@
+/*
+ * (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-mips/danube.h>
+
+
+
+/*******************************************************************************
+*
+* get_cpuclk - returns the frequency of the CPU. 
+*
+* NOTE:
+*   This functions should be used by the hardware driver to get the correct
+*   frequency of the CPU. 
+*/
+
+unsigned int danube_get_ddr_hz(void)
+{
+        switch((*DANUBE_CGU_SYS) & 0x3){
+                case 0:
+                        return 166666667;
+                case 1:
+                        return 133333333;
+                case 2:
+                        return 111111111;
+                case 3:
+                        return 83333333;
+        }
+}
+
+
+uint danube_get_cpuclk(void)
+{
+#ifdef CONFIG_USE_EMULATOR
+        return EMULATOR_CPU_SPEED;
+#else //NOT CONFIG_USE_EMULATOR
+        unsigned int ddr_clock=danube_get_ddr_hz();
+        switch((*DANUBE_CGU_SYS) & 0xc){
+                case 0:
+                        return 333333333;
+                case 4:
+                        return ddr_clock;
+                case 8:
+                        return ddr_clock << 1;
+                default:
+                       break;
+                        /*reserved*/
+        }
+#endif
+
+}
+
+
+uint danube_get_fpiclk(void)
+{
+#ifdef CONFIG_USE_EMULATOR
+        unsigned int  clkCPU;
+        clkCPU = danube_get_cpu_hz();
+        return clkCPU >> 2;
+#else //NOT CONFIG_USE_EMULATOR
+        unsigned int ddr_clock=danube_get_ddr_hz();
+        if ((*DANUBE_CGU_SYS) & 0x40){
+                return ddr_clock >> 1;
+        }
+        return ddr_clock;
+#endif
+
+}
+
+