powerpc/mpc5121: Add generic board support for MPC5121 platforms (fb180322) · Commits · 戴 / test

arch/powerpc/platforms/512x/Kconfig

+12 −3

Original line number	Diff line number	Diff line
		@@ -3,12 +3,10 @@ config PPC_MPC512x
		select FSL_SOC
		select IPIC
		select PPC_CLOCK
		default n

		config PPC_MPC5121
		bool
		select PPC_MPC512x
		default n

		config MPC5121_ADS
		bool "Freescale MPC5121E ADS"
		@@ -17,4 +15,15 @@ config MPC5121_ADS
		select PPC_MPC5121
		help
		This option enables support for the MPC5121E ADS board.
		default n

		config MPC5121_GENERIC
		bool "Generic support for simple MPC5121 based boards"
		depends on PPC_MULTIPLATFORM && PPC32
		select DEFAULT_UIMAGE
		select PPC_MPC5121
		help
		This option enables support for simple MPC5121 based boards
		which do not need custom platform specific setup.

		Compatible boards include: Protonic LVT base boards (ZANMCU
		and VICVT2).

arch/powerpc/platforms/512x/Makefile

+2 −1

Original line number	Diff line number	Diff line
		#
		# Makefile for the Freescale PowerPC 512x linux kernel.
		#
		obj-y += clock.o
		obj-y += clock.o mpc512x_shared.o
		obj-$(CONFIG_MPC5121_ADS) += mpc5121_ads.o
		obj-$(CONFIG_MPC5121_GENERIC) += mpc5121_generic.o

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

+5 −59

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2007 Freescale Semiconductor, Inc. All rights reserved.
		* Copyright (C) 2007, 2008 Freescale Semiconductor, Inc. All rights reserved.
		*
		* Author: John Rigby, <jrigby@freescale.com>, Thur Mar 29 2007
		*
		@@ -15,7 +15,6 @@

		#include <linux/kernel.h>
		#include <linux/io.h>
		#include <linux/irq.h>
		#include <linux/of_platform.h>

		#include <asm/machdep.h>
		@@ -23,65 +22,11 @@
		#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");
		}
		#include "mpc512x.h"

		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();
		mpc512x_init_IRQ();
		}

		/*
		@@ -97,7 +42,8 @@ static int __init mpc5121_ads_probe(void)
		define_machine(mpc5121_ads) {
		.name = "MPC5121 ADS",
		.probe = mpc5121_ads_probe,
		.init = mpc5121_ads_declare_of_platform_devices,
		.setup_arch = mpc5121_ads_setup_arch,
		.init = mpc512x_declare_of_platform_devices,
		.init_IRQ = mpc5121_ads_init_IRQ,
		.get_irq = ipic_get_irq,
		.calibrate_decr = generic_calibrate_decr,

arch/powerpc/platforms/512x/mpc5121_generic.c

0 → 100644

+58 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2007,2008 Freescale Semiconductor, Inc. All rights reserved.
		*
		* Author: John Rigby, <jrigby@freescale.com>
		*
		* Description:
		* MPC5121 SoC 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/of_platform.h>

		#include <asm/machdep.h>
		#include <asm/ipic.h>
		#include <asm/prom.h>
		#include <asm/time.h>

		#include "mpc512x.h"

		/*
		* list of supported boards
		*/
		static char *board[] __initdata = {
		"prt,prtlvt",
		NULL
		};

		/*
		* Called very early, MMU is off, device-tree isn't unflattened
		*/
		static int __init mpc5121_generic_probe(void)
		{
		unsigned long node = of_get_flat_dt_root();
		int i = 0;

		while (board[i]) {
		if (of_flat_dt_is_compatible(node, board[i]))
		break;
		i++;
		}

		return board[i] != NULL;
		}

		define_machine(mpc5121_generic) {
		.name = "MPC5121 generic",
		.probe = mpc5121_generic_probe,
		.init = mpc512x_declare_of_platform_devices,
		.init_IRQ = mpc512x_init_IRQ,
		.get_irq = ipic_get_irq,
		.calibrate_decr = generic_calibrate_decr,
		};

arch/powerpc/platforms/512x/mpc512x.h

0 → 100644

+17 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2007 Freescale Semiconductor, Inc. All rights reserved.
		*
		* 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.
		*
		* Prototypes for MPC512x shared code
		*/

		#ifndef __MPC512X_H__
		#define __MPC512X_H__
		extern unsigned long mpc512x_find_ips_freq(struct device_node *node);
		extern void __init mpc512x_init_IRQ(void);
		void __init mpc512x_declare_of_platform_devices(void);
		#endif /* __MPC512X_H__ */

Admin message