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powerpc/mpc5121: Add generic board support for MPC5121 platforms
Move shared code from mpc5121_ads.c to new file mpc512x_shared.c - mpc512x_find_ips_freq -> unchanged - contents of mpc5121_ads_init_IRQ -> mpc512x_init_IRQ - looking for fsl,mpc5121-ipic instead of fsl,ipic - mpc5121_ads_declare_of_platform_devices -> mpc5121_declare_of_platform_devices - and use compatible for lookup instead of node name Add new generic board setup mpc5121_generic.c Signed-off-by: John Rigby <jrigby@freescale.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
This commit is contained in:
John Rigby
Grant Likely
parent
137e95906e
commit
fb1803224e
@ -3,12 +3,10 @@ config PPC_MPC512x
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select FSL_SOC
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select IPIC
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select PPC_CLOCK
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default n
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config PPC_MPC5121
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bool
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select PPC_MPC512x
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default n
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config MPC5121_ADS
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bool "Freescale MPC5121E ADS"
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@ -17,4 +15,15 @@ config MPC5121_ADS
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select PPC_MPC5121
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help
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This option enables support for the MPC5121E ADS board.
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default n
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config MPC5121_GENERIC
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bool "Generic support for simple MPC5121 based boards"
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depends on PPC_MULTIPLATFORM && PPC32
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select DEFAULT_UIMAGE
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select PPC_MPC5121
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help
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This option enables support for simple MPC5121 based boards
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which do not need custom platform specific setup.
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Compatible boards include: Protonic LVT base boards (ZANMCU
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and VICVT2).
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@ -1,5 +1,6 @@
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#
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# Makefile for the Freescale PowerPC 512x linux kernel.
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#
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obj-y += clock.o
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obj-y += clock.o mpc512x_shared.o
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obj-$(CONFIG_MPC5121_ADS) += mpc5121_ads.o
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obj-$(CONFIG_MPC5121_GENERIC) += mpc5121_generic.o
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@ -1,5 +1,5 @@
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/*
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* Copyright (C) 2007 Freescale Semiconductor, Inc. All rights reserved.
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* Copyright (C) 2007, 2008 Freescale Semiconductor, Inc. All rights reserved.
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*
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* Author: John Rigby, <jrigby@freescale.com>, Thur Mar 29 2007
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*
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@ -15,7 +15,6 @@
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#include <linux/kernel.h>
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#include <linux/io.h>
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#include <linux/irq.h>
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#include <linux/of_platform.h>
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#include <asm/machdep.h>
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@ -23,65 +22,11 @@
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#include <asm/prom.h>
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#include <asm/time.h>
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/**
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* mpc512x_find_ips_freq - Find the IPS bus frequency for a device
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* @node: device node
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*
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* Returns IPS bus frequency, or 0 if the bus frequency cannot be found.
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*/
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unsigned long
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mpc512x_find_ips_freq(struct device_node *node)
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{
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struct device_node *np;
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const unsigned int *p_ips_freq = NULL;
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of_node_get(node);
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while (node) {
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p_ips_freq = of_get_property(node, "bus-frequency", NULL);
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if (p_ips_freq)
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break;
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np = of_get_parent(node);
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of_node_put(node);
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node = np;
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}
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if (node)
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of_node_put(node);
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return p_ips_freq ? *p_ips_freq : 0;
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}
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EXPORT_SYMBOL(mpc512x_find_ips_freq);
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static struct of_device_id __initdata of_bus_ids[] = {
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{ .name = "soc", },
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{ .name = "localbus", },
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{},
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};
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static void __init mpc5121_ads_declare_of_platform_devices(void)
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{
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/* Find every child of the SOC node and add it to of_platform */
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if (of_platform_bus_probe(NULL, of_bus_ids, NULL))
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printk(KERN_ERR __FILE__ ": "
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"Error while probing of_platform bus\n");
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}
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#include "mpc512x.h"
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static void __init mpc5121_ads_init_IRQ(void)
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{
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struct device_node *np;
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np = of_find_compatible_node(NULL, NULL, "fsl,ipic");
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if (!np)
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return;
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ipic_init(np, 0);
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of_node_put(np);
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/*
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* Initialize the default interrupt mapping priorities,
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* in case the boot rom changed something on us.
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*/
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ipic_set_default_priority();
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mpc512x_init_IRQ();
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}
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/*
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@ -97,7 +42,8 @@ static int __init mpc5121_ads_probe(void)
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define_machine(mpc5121_ads) {
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.name = "MPC5121 ADS",
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.probe = mpc5121_ads_probe,
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.init = mpc5121_ads_declare_of_platform_devices,
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.setup_arch = mpc5121_ads_setup_arch,
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.init = mpc512x_declare_of_platform_devices,
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.init_IRQ = mpc5121_ads_init_IRQ,
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.get_irq = ipic_get_irq,
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.calibrate_decr = generic_calibrate_decr,
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58
arch/powerpc/platforms/512x/mpc5121_generic.c
Normal file
58
arch/powerpc/platforms/512x/mpc5121_generic.c
Normal file
@ -0,0 +1,58 @@
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/*
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* Copyright (C) 2007,2008 Freescale Semiconductor, Inc. All rights reserved.
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*
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* Author: John Rigby, <jrigby@freescale.com>
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*
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* Description:
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* MPC5121 SoC setup
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*
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* This is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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*/
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#include <linux/kernel.h>
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#include <linux/of_platform.h>
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#include <asm/machdep.h>
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#include <asm/ipic.h>
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#include <asm/prom.h>
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#include <asm/time.h>
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#include "mpc512x.h"
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/*
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* list of supported boards
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*/
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static char *board[] __initdata = {
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"prt,prtlvt",
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NULL
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};
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/*
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* Called very early, MMU is off, device-tree isn't unflattened
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*/
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static int __init mpc5121_generic_probe(void)
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{
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unsigned long node = of_get_flat_dt_root();
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int i = 0;
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while (board[i]) {
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if (of_flat_dt_is_compatible(node, board[i]))
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break;
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i++;
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}
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return board[i] != NULL;
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}
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define_machine(mpc5121_generic) {
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.name = "MPC5121 generic",
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.probe = mpc5121_generic_probe,
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.init = mpc512x_declare_of_platform_devices,
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.init_IRQ = mpc512x_init_IRQ,
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.get_irq = ipic_get_irq,
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.calibrate_decr = generic_calibrate_decr,
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};
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17
arch/powerpc/platforms/512x/mpc512x.h
Normal file
17
arch/powerpc/platforms/512x/mpc512x.h
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@ -0,0 +1,17 @@
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/*
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* Copyright (C) 2007 Freescale Semiconductor, Inc. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* Prototypes for MPC512x shared code
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*/
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#ifndef __MPC512X_H__
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#define __MPC512X_H__
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extern unsigned long mpc512x_find_ips_freq(struct device_node *node);
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extern void __init mpc512x_init_IRQ(void);
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void __init mpc512x_declare_of_platform_devices(void);
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#endif /* __MPC512X_H__ */
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83
arch/powerpc/platforms/512x/mpc512x_shared.c
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83
arch/powerpc/platforms/512x/mpc512x_shared.c
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@ -0,0 +1,83 @@
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/*
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* Copyright (C) 2007,2008 Freescale Semiconductor, Inc. All rights reserved.
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*
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* Author: John Rigby <jrigby@freescale.com>
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*
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* Description:
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* MPC512x Shared code
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*
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* This is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <linux/kernel.h>
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#include <linux/io.h>
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#include <linux/irq.h>
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#include <linux/of_platform.h>
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#include <asm/machdep.h>
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#include <asm/ipic.h>
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#include <asm/prom.h>
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#include <asm/time.h>
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#include "mpc512x.h"
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unsigned long
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mpc512x_find_ips_freq(struct device_node *node)
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{
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struct device_node *np;
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const unsigned int *p_ips_freq = NULL;
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of_node_get(node);
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while (node) {
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p_ips_freq = of_get_property(node, "bus-frequency", NULL);
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if (p_ips_freq)
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break;
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np = of_get_parent(node);
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of_node_put(node);
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node = np;
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}
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if (node)
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of_node_put(node);
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return p_ips_freq ? *p_ips_freq : 0;
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}
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EXPORT_SYMBOL(mpc512x_find_ips_freq);
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void __init mpc512x_init_IRQ(void)
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{
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struct device_node *np;
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np = of_find_compatible_node(NULL, NULL, "fsl,mpc5121-ipic");
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if (!np)
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return;
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ipic_init(np, 0);
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of_node_put(np);
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/*
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* Initialize the default interrupt mapping priorities,
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* in case the boot rom changed something on us.
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*/
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ipic_set_default_priority();
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}
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/*
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* Nodes to do bus probe on, soc and localbus
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*/
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static struct of_device_id __initdata of_bus_ids[] = {
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{ .compatible = "fsl,mpc5121-immr", },
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{ .compatible = "fsl,mpc5121-localbus", },
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{},
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};
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void __init mpc512x_declare_of_platform_devices(void)
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{
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if (of_platform_bus_probe(NULL, of_bus_ids, NULL))
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printk(KERN_ERR __FILE__ ": "
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"Error while probing of_platform bus\n");
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}
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