[POWERPC] mpc512x: Basic platform support (e177edcd) · Commits · 戴 / test

arch/powerpc/Kconfig

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		@@ -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

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		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

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		#
		# Makefile for the Freescale PowerPC 512x linux kernel.
		#
		obj-$(CONFIG_MPC5121_ADS) += mpc5121_ads.o

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

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		/*
		* 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

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		@@ -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"

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