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authorAurelien Jarno <aurelien@aurel32.net>2007-09-25 15:40:12 +0200
committerRalf Baechle <ralf@linux-mips.org>2007-10-11 23:46:02 +0100
commit1c0c13eb935c95fd2ca0b0aca6dd4860487fb242 (patch)
treea274a6e2e56f519900fb35c544ddf279f38ca8d6
parentea202c632a52c4a83f1bd82d8d06bc8e04f2689a (diff)
downloadop-kernel-dev-1c0c13eb935c95fd2ca0b0aca6dd4860487fb242.zip
op-kernel-dev-1c0c13eb935c95fd2ca0b0aca6dd4860487fb242.tar.gz
[MIPS] Add support for BCM47XX CPUs.
Note that the BCM4710 does not support the wait instruction, this is not a mistake in the code. It originally comes from the OpenWrt patches. Cc: Michael Buesch <mb@bu3sch.de> Cc: Felix Fietkau <nbd@openwrt.org> Cc: Florian Schirmer <jolt@tuxbox.org> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
-rw-r--r--arch/mips/Kconfig14
-rw-r--r--arch/mips/Makefile7
-rw-r--r--arch/mips/bcm47xx/Makefile6
-rw-r--r--arch/mips/bcm47xx/irq.c55
-rw-r--r--arch/mips/bcm47xx/prom.c49
-rw-r--r--arch/mips/bcm47xx/serial.c52
-rw-r--r--arch/mips/bcm47xx/setup.c79
-rw-r--r--arch/mips/bcm47xx/time.c56
-rw-r--r--arch/mips/kernel/cpu-probe.c20
-rw-r--r--arch/mips/kernel/proc.c2
-rw-r--r--arch/mips/mm/tlbex.c2
-rw-r--r--include/asm-mips/bootinfo.h6
-rw-r--r--include/asm-mips/cpu.h12
-rw-r--r--include/asm-mips/mach-bcm47xx/bcm47xx.h27
14 files changed, 385 insertions, 2 deletions
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index a8bdc08..6648f9b 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -44,6 +44,20 @@ config BASLER_EXCITE_PROTOTYPE
note that a kernel built with this option selected will not be
able to run on normal units.
+config BCM47XX
+ bool "BCM47XX based boards"
+ select DMA_NONCOHERENT
+ select HW_HAS_PCI
+ select IRQ_CPU
+ select SYS_HAS_CPU_MIPS32_R1
+ select SYS_SUPPORTS_32BIT_KERNEL
+ select SYS_SUPPORTS_LITTLE_ENDIAN
+ select SSB
+ select SSB_DRIVER_MIPS
+ select GENERIC_GPIO
+ help
+ Support for BCM47XX based boards
+
config MIPS_COBALT
bool "Cobalt Server"
select DMA_NONCOHERENT
diff --git a/arch/mips/Makefile b/arch/mips/Makefile
index 6dcdbfb..7b936ed 100644
--- a/arch/mips/Makefile
+++ b/arch/mips/Makefile
@@ -535,6 +535,13 @@ libs-$(CONFIG_SIBYTE_BIGSUR) += arch/mips/sibyte/swarm/
load-$(CONFIG_SIBYTE_BIGSUR) := 0xffffffff80100000
#
+# Broadcom BCM47XX boards
+#
+core-$(CONFIG_BCM47XX) += arch/mips/bcm47xx/
+cflags-$(CONFIG_BCM47XX) += -Iinclude/asm-mips/mach-bcm47xx
+load-$(CONFIG_BCM47XX) := 0xffffffff80001000
+
+#
# SNI RM
#
core-$(CONFIG_SNI_RM) += arch/mips/sni/
diff --git a/arch/mips/bcm47xx/Makefile b/arch/mips/bcm47xx/Makefile
new file mode 100644
index 0000000..dc035f9
--- /dev/null
+++ b/arch/mips/bcm47xx/Makefile
@@ -0,0 +1,6 @@
+#
+# Makefile for the BCM47XX specific kernel interface routines
+# under Linux.
+#
+
+obj-y := irq.o prom.o serial.o setup.o time.o
diff --git a/arch/mips/bcm47xx/irq.c b/arch/mips/bcm47xx/irq.c
new file mode 100644
index 0000000..325757a
--- /dev/null
+++ b/arch/mips/bcm47xx/irq.c
@@ -0,0 +1,55 @@
+/*
+ * 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/types.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <asm/irq_cpu.h>
+
+void plat_irq_dispatch(void)
+{
+ u32 cause;
+
+ cause = read_c0_cause() & read_c0_status() & CAUSEF_IP;
+
+ clear_c0_status(cause);
+
+ if (cause & CAUSEF_IP7)
+ do_IRQ(7);
+ if (cause & CAUSEF_IP2)
+ do_IRQ(2);
+ if (cause & CAUSEF_IP3)
+ do_IRQ(3);
+ if (cause & CAUSEF_IP4)
+ do_IRQ(4);
+ if (cause & CAUSEF_IP5)
+ do_IRQ(5);
+ if (cause & CAUSEF_IP6)
+ do_IRQ(6);
+}
+
+void __init arch_init_irq(void)
+{
+ mips_cpu_irq_init();
+}
diff --git a/arch/mips/bcm47xx/prom.c b/arch/mips/bcm47xx/prom.c
new file mode 100644
index 0000000..41ac9dd
--- /dev/null
+++ b/arch/mips/bcm47xx/prom.c
@@ -0,0 +1,49 @@
+/*
+ * 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 <asm/bootinfo.h>
+
+const char *get_system_type(void)
+{
+ return "Broadcom BCM47XX";
+}
+
+void __init prom_init(void)
+{
+ unsigned long mem;
+
+ /* Figure out memory size by finding aliases */
+ for (mem = (1 << 20); mem < (128 << 20); mem += (1 << 20)) {
+ if (*(unsigned long *)((unsigned long)(prom_init) + mem) ==
+ *(unsigned long *)(prom_init))
+ break;
+ }
+
+ add_memory_region(0, mem, BOOT_MEM_RAM);
+}
+
+void __init prom_free_prom_memory(void)
+{
+}
diff --git a/arch/mips/bcm47xx/serial.c b/arch/mips/bcm47xx/serial.c
new file mode 100644
index 0000000..59c11af
--- /dev/null
+++ b/arch/mips/bcm47xx/serial.c
@@ -0,0 +1,52 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2007 Aurelien Jarno <aurelien@aurel32.net>
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/serial.h>
+#include <linux/serial_8250.h>
+#include <linux/ssb/ssb.h>
+#include <bcm47xx.h>
+
+static struct plat_serial8250_port uart8250_data[5];
+
+static struct platform_device uart8250_device = {
+ .name = "serial8250",
+ .id = PLAT8250_DEV_PLATFORM,
+ .dev = {
+ .platform_data = uart8250_data,
+ },
+};
+
+static int __init uart8250_init(void)
+{
+ int i;
+ struct ssb_mipscore *mcore = &(ssb_bcm47xx.mipscore);
+
+ memset(&uart8250_data, 0, sizeof(uart8250_data));
+
+ for (i = 0; i < mcore->nr_serial_ports; i++) {
+ struct plat_serial8250_port *p = &(uart8250_data[i]);
+ struct ssb_serial_port *ssb_port = &(mcore->serial_ports[i]);
+
+ p->mapbase = (unsigned int) ssb_port->regs;
+ p->membase = (void *) ssb_port->regs;
+ p->irq = ssb_port->irq + 2;
+ p->uartclk = ssb_port->baud_base;
+ p->regshift = ssb_port->reg_shift;
+ p->iotype = UPIO_MEM;
+ p->flags = UPF_BOOT_AUTOCONF | UPF_SHARE_IRQ;
+ }
+ return platform_device_register(&uart8250_device);
+}
+
+module_init(uart8250_init);
+
+MODULE_AUTHOR("Aurelien Jarno <aurelien@aurel32.net>");
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("8250 UART probe driver for the BCM47XX platforms");
diff --git a/arch/mips/bcm47xx/setup.c b/arch/mips/bcm47xx/setup.c
new file mode 100644
index 0000000..dfc580a
--- /dev/null
+++ b/arch/mips/bcm47xx/setup.c
@@ -0,0 +1,79 @@
+/*
+ * Copyright (C) 2004 Florian Schirmer <jolt@tuxbox.org>
+ * Copyright (C) 2005 Waldemar Brodkorb <wbx@openwrt.org>
+ * Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
+ * Copyright (C) 2006 Michael Buesch <mb@bu3sch.de>
+ *
+ * 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/types.h>
+#include <linux/ssb/ssb.h>
+#include <asm/reboot.h>
+#include <asm/time.h>
+#include <bcm47xx.h>
+
+struct ssb_bus ssb_bcm47xx;
+EXPORT_SYMBOL(ssb_bcm47xx);
+
+static void bcm47xx_machine_restart(char *command)
+{
+ printk(KERN_ALERT "Please stand by while rebooting the system...\n");
+ local_irq_disable();
+ /* Set the watchdog timer to reset immediately */
+ ssb_chipco_watchdog_timer_set(&ssb_bcm47xx.chipco, 1);
+ while (1)
+ cpu_relax();
+}
+
+static void bcm47xx_machine_halt(void)
+{
+ /* Disable interrupts and watchdog and spin forever */
+ local_irq_disable();
+ ssb_chipco_watchdog_timer_set(&ssb_bcm47xx.chipco, 0);
+ while (1)
+ cpu_relax();
+}
+
+static int bcm47xx_get_invariants(struct ssb_bus *bus,
+ struct ssb_init_invariants *iv)
+{
+ /* TODO: fill ssb_init_invariants using boardtype/boardrev
+ * CFE environment variables.
+ */
+ return 0;
+}
+
+void __init plat_mem_setup(void)
+{
+ int err;
+
+ err = ssb_bus_ssbbus_register(&ssb_bcm47xx, SSB_ENUM_BASE,
+ bcm47xx_get_invariants);
+ if (err)
+ panic("Failed to initialize SSB bus (err %d)\n", err);
+
+ _machine_restart = bcm47xx_machine_restart;
+ _machine_halt = bcm47xx_machine_halt;
+ pm_power_off = bcm47xx_machine_halt;
+ board_time_init = bcm47xx_time_init;
+}
+
diff --git a/arch/mips/bcm47xx/time.c b/arch/mips/bcm47xx/time.c
new file mode 100644
index 0000000..b27d07f
--- /dev/null
+++ b/arch/mips/bcm47xx/time.c
@@ -0,0 +1,56 @@
+/*
+ * 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/ssb/ssb.h>
+#include <asm/time.h>
+#include <bcm47xx.h>
+
+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_bcm47xx.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);
+}
diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c
index 3e00416..97c0386 100644
--- a/arch/mips/kernel/cpu-probe.c
+++ b/arch/mips/kernel/cpu-probe.c
@@ -159,6 +159,7 @@ static inline void check_wait(void)
case CPU_5KC:
case CPU_25KF:
case CPU_PR4450:
+ case CPU_BCM3302:
cpu_wait = r4k_wait;
break;
@@ -793,6 +794,22 @@ static inline void cpu_probe_philips(struct cpuinfo_mips *c)
}
+static inline void cpu_probe_broadcom(struct cpuinfo_mips *c)
+{
+ decode_configs(c);
+ switch (c->processor_id & 0xff00) {
+ case PRID_IMP_BCM3302:
+ c->cputype = CPU_BCM3302;
+ break;
+ case PRID_IMP_BCM4710:
+ c->cputype = CPU_BCM4710;
+ break;
+ default:
+ c->cputype = CPU_UNKNOWN;
+ break;
+ }
+}
+
__init void cpu_probe(void)
{
struct cpuinfo_mips *c = &current_cpu_data;
@@ -815,6 +832,9 @@ __init void cpu_probe(void)
case PRID_COMP_SIBYTE:
cpu_probe_sibyte(c);
break;
+ case PRID_COMP_BROADCOM:
+ cpu_probe_broadcom(c);
+ break;
case PRID_COMP_SANDCRAFT:
cpu_probe_sandcraft(c);
break;
diff --git a/arch/mips/kernel/proc.c b/arch/mips/kernel/proc.c
index ec04f5a..accd520 100644
--- a/arch/mips/kernel/proc.c
+++ b/arch/mips/kernel/proc.c
@@ -82,6 +82,8 @@ static const char *cpu_name[] = {
[CPU_VR4181] = "NEC VR4181",
[CPU_VR4181A] = "NEC VR4181A",
[CPU_SR71000] = "Sandcraft SR71000",
+ [CPU_BCM3302] = "Broadcom BCM3302",
+ [CPU_BCM4710] = "Broadcom BCM4710",
[CPU_PR4450] = "Philips PR4450",
[CPU_LOONGSON2] = "ICT Loongson-2",
};
diff --git a/arch/mips/mm/tlbex.c b/arch/mips/mm/tlbex.c
index 6c425b0..b2c6b9e 100644
--- a/arch/mips/mm/tlbex.c
+++ b/arch/mips/mm/tlbex.c
@@ -908,6 +908,8 @@ static __init void build_tlb_write_entry(u32 **p, struct label **l,
case CPU_4KSC:
case CPU_20KC:
case CPU_25KF:
+ case CPU_BCM3302:
+ case CPU_BCM4710:
case CPU_LOONGSON2:
if (m4kc_tlbp_war())
i_nop(p);
diff --git a/include/asm-mips/bootinfo.h b/include/asm-mips/bootinfo.h
index 1bb4bf6..efa8158 100644
--- a/include/asm-mips/bootinfo.h
+++ b/include/asm-mips/bootinfo.h
@@ -215,6 +215,12 @@
#define MACH_GROUP_WINDRIVER 28 /* Windriver boards */
#define MACH_WRPPMC 1
+/*
+ * Valid machtype for group Broadcom
+ */
+#define MACH_GROUP_BRCM 23 /* Broadcom */
+#define MACH_BCM47XX 1 /* Broadcom BCM47XX */
+
#define CL_SIZE COMMAND_LINE_SIZE
const char *get_system_type(void);
diff --git a/include/asm-mips/cpu.h b/include/asm-mips/cpu.h
index 3857358..d67f43b 100644
--- a/include/asm-mips/cpu.h
+++ b/include/asm-mips/cpu.h
@@ -106,6 +106,13 @@
#define PRID_IMP_SR71000 0x0400
/*
+ * These are the PRID's for when 23:16 == PRID_COMP_BROADCOM
+ */
+
+#define PRID_IMP_BCM4710 0x4000
+#define PRID_IMP_BCM3302 0x9000
+
+/*
* Definitions for 7:0 on legacy processors
*/
@@ -217,8 +224,9 @@
#define CPU_R14000 64
#define CPU_LOONGSON1 65
#define CPU_LOONGSON2 66
-
-#define CPU_LAST 66
+#define CPU_BCM3302 67
+#define CPU_BCM4710 68
+#define CPU_LAST 68
/*
* ISA Level encodings
diff --git a/include/asm-mips/mach-bcm47xx/bcm47xx.h b/include/asm-mips/mach-bcm47xx/bcm47xx.h
new file mode 100644
index 0000000..a2fb5e8
--- /dev/null
+++ b/include/asm-mips/mach-bcm47xx/bcm47xx.h
@@ -0,0 +1,27 @@
+/*
+ * Copyright (C) 2007 Aurelien Jarno <aurelien@aurel32.net>
+ *
+ * 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.
+ */
+
+#ifndef __ASM_BCM47XX_H
+#define __ASM_BCM47XX_H
+
+/* SSB bus */
+extern struct ssb_bus ssb_bcm47xx;
+
+extern void bcm47xx_time_init(void);
+
+#endif /* __ASM_BCM47XX_H */
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