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[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: John Rigby <jrigby@freescale.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
This commit is contained in:
John Rigby 2008-01-29 04:28:53 +11:00 committed by Grant Likely
parent 99e139126a
commit e177edcd15
8 changed files with 156 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
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

20
arch/powerpc/platforms/512x/Kconfig Normal file
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@ -0,0 +1,20 @@
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

4
arch/powerpc/platforms/512x/Makefile Normal file
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@ -0,0 +1,4 @@
#
# Makefile for the Freescale PowerPC 512x linux kernel.
#
obj-$(CONFIG_MPC5121_ADS) += mpc5121_ads.o

104
arch/powerpc/platforms/512x/mpc5121_ads.c Normal file
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@ -0,0 +1,104 @@
/*
* 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,
};

1
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"

6
arch/powerpc/platforms/Kconfig.cputype
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@ -14,7 +14,7 @@ choice
There are five families of 32 bit PowerPC chips supported.
The most common ones are the desktop and server CPUs (601, 603,
604, 740, 750, 74xx) CPUs from Freescale and IBM, with their
embedded 52xx/82xx/83xx/86xx counterparts.
embedded 512x/52xx/82xx/83xx/86xx counterparts.
The other embeeded parts, namely 4xx, 8xx, e200 (55xx) and e500
(85xx) each form a family of their own that is not compatible
with the others.
@ -22,7 +22,7 @@ choice
If unsure, select 52xx/6xx/7xx/74xx/82xx/83xx/86xx.
config 6xx
bool "52xx/6xx/7xx/74xx/82xx/83xx/86xx"
bool "512x/52xx/6xx/7xx/74xx/82xx/83xx/86xx"
select PPC_FPU
config PPC_85xx
@ -221,7 +221,7 @@ config NR_CPUS
config NOT_COHERENT_CACHE
bool
depends on 4xx || 8xx || E200
depends on 4xx || 8xx || E200 || PPC_MPC512x
default y
config CHECK_CACHE_COHERENCY

1
arch/powerpc/platforms/Makefile
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@ -11,6 +11,7 @@ endif
obj-$(CONFIG_PPC_CHRP) += chrp/
obj-$(CONFIG_40x) += 40x/
obj-$(CONFIG_44x) += 44x/
obj-$(CONFIG_PPC_MPC512x) += 512x/
obj-$(CONFIG_PPC_MPC52xx) += 52xx/
obj-$(CONFIG_PPC_8xx) += 8xx/
obj-$(CONFIG_PPC_82xx) += 82xx/

22
include/asm-powerpc/mpc512x.h Normal file
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@ -0,0 +1,22 @@
/*
* Copyright (C) 2007 Freescale Semiconductor, Inc. All rights reserved.
*
* Author: John Rigby, <jrigby@freescale.com>, Friday Apr 13 2007
*
* Description:
* MPC5121 Prototypes and definitions
*
* 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.
*
*/
#ifndef __ASM_POWERPC_MPC512x_H__
#define __ASM_POWERPC_MPC512x_H__
extern unsigned long mpc512x_find_ips_freq(struct device_node *node);
#endif /* __ASM_POWERPC_MPC512x_H__ */