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Commit 1c0c13eb authored by Aurelien Jarno's avatar Aurelien Jarno Committed by Ralf Baechle
Browse files

[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: default avatarAurelien Jarno <aurelien@aurel32.net>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
parent ea202c63

arch/mips/Kconfig

+14 −0
Original line number Diff line number Diff line
@@ -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

arch/mips/Makefile

+7 −0
Original line number Diff line number Diff line
@@ -534,6 +534,13 @@ load-$(CONFIG_SIBYTE_SWARM) := 0xffffffff80100000 
libs-$(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

#

arch/mips/bcm47xx/Makefile

0 → 100644
+6 −0
Original line number Diff line number Diff line 
#

# Makefile for the BCM47XX specific kernel interface routines

# under Linux.

#



obj-y := irq.o prom.o serial.o setup.o time.o

arch/mips/bcm47xx/irq.c

0 → 100644
+55 −0
Original line number Diff line number Diff line 
/*

 *  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();

}

arch/mips/bcm47xx/prom.c

0 → 100644
+49 −0
Original line number Diff line number Diff line 
/*

 *  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)

{

}