[uboot-lantiq] add preliminary AR9 support

attention: if caches enabled the network is broken
attention: the network of the flash image doesn't work because of enabled caches



git-svn-id: svn://svn.openwrt.org/openwrt/trunk@20606 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 67 insertions, 0 deletions

diff --git a/package/uboot-lantiq/files/cpu/mips/ar9/clock.c b/package/uboot-lantiq/files/cpu/mips/ar9/clock.c
new file mode 100644
index 000000000..a8aecb422
--- /dev/null
+++ b/package/uboot-lantiq/files/cpu/mips/ar9/clock.c
@@ -0,0 +1,67 @@
+/*
+ * (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/ar9.h>
+
+ulong ifx_get_ddr_hz(void)
+{
+	switch((*AR9_CGU_SYS) & 0x05) {
+		case 0x01: 
+		case 0x05: 
+		return CLOCK_111M;
+	
+		case 0x00: 
+		case 0x04: 
+		return CLOCK_166M;
+	}
+
+	return 0;
+}
+
+ulong ifx_get_cpuclk(void)
+{
+	switch((*AR9_CGU_SYS) & 0x05) {
+		case 0x00: 
+		case 0x01: 
+		return CLOCK_333M;
+
+		case 0x04: 
+		return CLOCK_166M;
+
+		case 0x05: 
+		return CLOCK_111M;
+	}
+
+	return 0;
+}
+
+ulong get_bus_freq(ulong dummy)
+{
+	unsigned int ddr_clock=ifx_get_ddr_hz();
+	if((*AR9_CGU_SYS) & 0x40){
+		return ddr_clock/2;
+	} else {
+		return ddr_clock;
+	}
+}