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authornoz <noz@3c298f89-4303-0410-b956-a3cf2f4a3e73>2008-04-25 20:49:40 +0000
committernoz <noz@3c298f89-4303-0410-b956-a3cf2f4a3e73>2008-04-25 20:49:40 +0000
commit320dc1ed4043cd83e7f4237464b332c928d18f0d (patch)
tree9de7a05b3f0a09ed9fc8186aca4942555e55da20 /target/linux/brcm47xx/files-2.6.25/arch/mips/bcm947xx/time.c
parent7f578ee838a96c7e40733b1446850f545d70b989 (diff)
First step to upgrade of brcm47xx to kernel version 2.6.25
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@10939 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux/brcm47xx/files-2.6.25/arch/mips/bcm947xx/time.c')
-rw-r--r--target/linux/brcm47xx/files-2.6.25/arch/mips/bcm947xx/time.c62
1 files changed, 62 insertions, 0 deletions
diff --git a/target/linux/brcm47xx/files-2.6.25/arch/mips/bcm947xx/time.c b/target/linux/brcm47xx/files-2.6.25/arch/mips/bcm947xx/time.c
new file mode 100644
index 000000000..62120ebc7
--- /dev/null
+++ b/target/linux/brcm47xx/files-2.6.25/arch/mips/bcm947xx/time.c
@@ -0,0 +1,62 @@
+/*
+ * Copyright (C) 2004 Florian Schirmer (jolt@tuxbox.org)
+ *
+ * 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 SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
+ * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * 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.,
+ * 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/serial_reg.h>
+#include <linux/interrupt.h>
+#include <linux/ssb/ssb.h>
+#include <asm/addrspace.h>
+#include <asm/io.h>
+#include <asm/time.h>
+
+extern struct ssb_bus ssb;
+
+void __init
+bcm47xx_time_init(void)
+{
+ unsigned long hz;
+
+ /*
+ * Use deterministic values for initial counter interrupt
+ * so that calibrate delay avoids encountering a counter wrap.
+ */
+ write_c0_count(0);
+ write_c0_compare(0xffff);
+
+ hz = ssb_cpu_clock(&ssb.mipscore) / 2;
+ if (!hz)
+ hz = 100000000;
+
+ /* Set MIPS counter frequency for fixed_rate_gettimeoffset() */
+ mips_hpt_frequency = hz;
+}
+
+void __init
+plat_timer_setup(struct irqaction *irq)
+{
+ /* Enable the timer interrupt */
+ setup_irq(7, irq);
+}