Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit e177edcd authored by John Rigby's avatar John Rigby Committed by Grant Likely
Browse files

[POWERPC] mpc512x: Basic platform support 



512x is very similar to 83xx and most
of this is patterned after code from 83xx.

New platform:
    changed:
	arch/powerpc/Kconfig
	arch/powerpc/platforms/Kconfig
	arch/powerpc/platforms/Kconfig.cputype
	arch/powerpc/platforms/Makefile
    new:
	arch/powerpc/platforms/512x/*
	include/asm-powerpc/mpc512x.h

Signed-off-by: default avatarJohn Rigby <jrigby@freescale.com>
Signed-off-by: default avatarGrant Likely <grant.likely@secretlab.ca>
parent 99e13912

arch/powerpc/Kconfig

+1 −1
Original line number Diff line number Diff line
@@ -489,7 +489,7 @@ config PCI 
	bool "PCI support" if 40x || CPM2 || PPC_83xx || PPC_85xx || PPC_86xx \

		|| PPC_MPC52xx || (EMBEDDED && (PPC_PSERIES || PPC_ISERIES)) \

		|| PPC_PS3 || 44x

	default y if !40x && !CPM2 && !8xx && !PPC_83xx \

	default y if !40x && !CPM2 && !8xx && !PPC_MPC512x && !PPC_83xx \

		&& !PPC_85xx && !PPC_86xx

	default PCI_PERMEDIA if !4xx && !CPM2 && !8xx

	default PCI_QSPAN if !4xx && !CPM2 && 8xx

arch/powerpc/platforms/512x/Kconfig

0 → 100644
+20 −0
Original line number Diff line number Diff line 
config PPC_MPC512x

	bool

	select FSL_SOC

	select IPIC

	default n



config PPC_MPC5121

	bool

	select PPC_MPC512x

	default n



config MPC5121_ADS

	bool "Freescale MPC5121E ADS"

	depends on PPC_MULTIPLATFORM && PPC32

	select DEFAULT_UIMAGE

	select WANT_DEVICE_TREE

	select PPC_MPC5121

	help

	  This option enables support for the MPC5121E ADS board.

	default n

arch/powerpc/platforms/512x/Makefile

0 → 100644
+4 −0
Original line number Diff line number Diff line 
#

# Makefile for the Freescale PowerPC 512x linux kernel.

#

obj-$(CONFIG_MPC5121_ADS)	+= mpc5121_ads.o

arch/powerpc/platforms/512x/mpc5121_ads.c

0 → 100644
+104 −0
Original line number Diff line number Diff line 
/*

 * Copyright (C) 2007 Freescale Semiconductor, Inc. All rights reserved.

 *

 * Author: John Rigby, <jrigby@freescale.com>, Thur Mar 29 2007

 *

 * Description:

 * MPC5121 ADS board setup

 *

 * This 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.

 *

 */



#include <linux/kernel.h>

#include <linux/io.h>

#include <linux/irq.h>

#include <linux/of_platform.h>



#include <asm/machdep.h>

#include <asm/ipic.h>

#include <asm/prom.h>

#include <asm/time.h>



/**

 * 	mpc512x_find_ips_freq - Find the IPS bus frequency for a device

 * 	@node:	device node

 *

 * 	Returns IPS bus frequency, or 0 if the bus frequency cannot be found.

 */

unsigned long

mpc512x_find_ips_freq(struct device_node *node)

{

	struct device_node *np;

	const unsigned int *p_ips_freq = NULL;



	of_node_get(node);

	while (node) {

		p_ips_freq = of_get_property(node, "bus-frequency", NULL);

		if (p_ips_freq)

			break;



		np = of_get_parent(node);

		of_node_put(node);

		node = np;

	}

	if (node)

		of_node_put(node);



	return p_ips_freq ? *p_ips_freq : 0;

}

EXPORT_SYMBOL(mpc512x_find_ips_freq);



static struct of_device_id __initdata of_bus_ids[] = {

	{ .name = "soc", },

	{ .name = "localbus", },

	{},

};



static void __init mpc5121_ads_declare_of_platform_devices(void)

{

	/* Find every child of the SOC node and add it to of_platform */

	if (of_platform_bus_probe(NULL, of_bus_ids, NULL))

		printk(KERN_ERR __FILE__ ": "

			"Error while probing of_platform bus\n");

}



static void __init mpc5121_ads_init_IRQ(void)

{

	struct device_node *np;



	np = of_find_compatible_node(NULL, NULL, "fsl,ipic");

	if (!np)

		return;



	ipic_init(np, 0);

	of_node_put(np);



	/*

	 * Initialize the default interrupt mapping priorities,

	 * in case the boot rom changed something on us.

	 */

	ipic_set_default_priority();

}



/*

 * Called very early, MMU is off, device-tree isn't unflattened

 */

static int __init mpc5121_ads_probe(void)

{

	unsigned long root = of_get_flat_dt_root();



	return of_flat_dt_is_compatible(root, "fsl,mpc5121ads");

}



define_machine(mpc5121_ads) {

	.name			= "MPC5121 ADS",

	.probe			= mpc5121_ads_probe,

	.init			= mpc5121_ads_declare_of_platform_devices,

	.init_IRQ		= mpc5121_ads_init_IRQ,

	.get_irq		= ipic_get_irq,

	.calibrate_decr		= generic_calibrate_decr,

};

arch/powerpc/platforms/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -41,6 +41,7 @@ config CLASSIC32 
source "arch/powerpc/platforms/pseries/Kconfig"

source "arch/powerpc/platforms/iseries/Kconfig"

source "arch/powerpc/platforms/chrp/Kconfig"

source "arch/powerpc/platforms/512x/Kconfig"

source "arch/powerpc/platforms/52xx/Kconfig"

source "arch/powerpc/platforms/powermac/Kconfig"

source "arch/powerpc/platforms/prep/Kconfig"