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[POWERPC] mpc5200: Add generic support for simple MPC5200 based boards

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This patch adds support for 'mpc5200-simple-platform' compatible
boards which do not need a platform specific setup. Such boards
are supported assuming the following:

- GPIO pins are configured by the firmware,
- CDM configuration (clocking) is setup correctly by firmware,
- if the 'fsl,has-wdt' property is present in one of the
  gpt nodes, then it is safe to use such gpt to reset the board,
- PCI is supported if enabled in the kernel configuration
  and if there is a PCI bus node defined in the device tree.

Signed-off-by: Marian Balakowicz <m8@semihalf.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
This commit is contained in:
Marian Balakowicz 2007-11-15 22:40:21 +11:00 committed by Grant Likely
parent 0238aa54b5
commit 5b5820d08b
5 changed files with 112 additions and 5 deletions
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2
arch/powerpc/boot/dts/lite5200.dts
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@ -19,7 +19,7 @@
/ {
model = "fsl,lite5200";
// revision = "1.0";
compatible = "fsl,lite5200","generic-mpc5200";
compatible = "fsl,lite5200";
#address-cells = <1>;
#size-cells = <1>;

2
arch/powerpc/boot/dts/lite5200b.dts
View File

@ -19,7 +19,7 @@
/ {
model = "fsl,lite5200b";
// revision = "1.0";
compatible = "fsl,lite5200b","generic-mpc5200";
compatible = "fsl,lite5200b";
#address-cells = <1>;
#size-cells = <1>;

27
arch/powerpc/platforms/52xx/Kconfig
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@ -19,6 +19,28 @@ config PPC_MPC5200_BUGFIX
It is safe to say 'Y' here
config PPC_MPC5200_SIMPLE
bool "Generic support for simple MPC5200 based boards"
depends on PPC_MULTIPLATFORM && PPC32
select PPC_MPC5200
select DEFAULT_UIMAGE
select WANT_DEVICE_TREE
default n
help
This option enables support for a simple MPC52xx based boards which
do not need a custom platform specific setup. Such boards are
supported assuming the following:
- GPIO pins are configured by the firmware,
- CDM configuration (clocking) is setup correctly by firmware,
- if the 'fsl,has-wdt' property is present in one of the
gpt nodes, then it is safe to use such gpt to reset the board,
- PCI is supported if enabled in the kernel configuration
and if there is a PCI bus node defined in the device tree.
Boards that are compatible with this generic platform support
are: 'tqc,tqm5200', 'promess,motionpro', 'schindler,cm5200'.
config PPC_EFIKA
bool "bPlan Efika 5k2. MPC5200B based computer"
depends on PPC_MULTIPLATFORM && PPC32
@ -31,8 +53,7 @@ config PPC_EFIKA
config PPC_LITE5200
bool "Freescale Lite5200 Eval Board"
depends on PPC_MULTIPLATFORM && PPC32
select WANT_DEVICE_TREE
select PPC_MPC5200
select DEFAULT_UIMAGE
select WANT_DEVICE_TREE
default n

1
arch/powerpc/platforms/52xx/Makefile
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@ -6,6 +6,7 @@ obj-y += mpc52xx_pic.o mpc52xx_common.o
obj-$(CONFIG_PCI) += mpc52xx_pci.o
endif
obj-$(CONFIG_PPC_MPC5200_SIMPLE) += mpc5200_simple.o
obj-$(CONFIG_PPC_EFIKA) += efika.o
obj-$(CONFIG_PPC_LITE5200) += lite5200.o

85
arch/powerpc/platforms/52xx/mpc5200_simple.c Normal file
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@ -0,0 +1,85 @@
/*
* Support for 'mpc5200-simple-platform' compatible boards.
*
* Written by Marian Balakowicz <m8@semihalf.com>
* Copyright (C) 2007 Semihalf
*
* 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.
*
* Description:
* This code implements support for a simple MPC52xx based boards which
* do not need a custom platform specific setup. Such boards are
* supported assuming the following:
*
* - GPIO pins are configured by the firmware,
* - CDM configuration (clocking) is setup correctly by firmware,
* - if the 'fsl,has-wdt' property is present in one of the
* gpt nodes, then it is safe to use such gpt to reset the board,
* - PCI is supported if enabled in the kernel configuration
* and if there is a PCI bus node defined in the device tree.
*
* Boards that are compatible with this generic platform support
* are listed in a 'board' table.
*/
#undef DEBUG
#include <asm/time.h>
#include <asm/prom.h>
#include <asm/machdep.h>
#include <asm/mpc52xx.h>
/*
* Setup the architecture
*/
static void __init mpc5200_simple_setup_arch(void)
{
if (ppc_md.progress)
ppc_md.progress("mpc5200_simple_setup_arch()", 0);
/* Some mpc5200 & mpc5200b related configuration */
mpc5200_setup_xlb_arbiter();
/* Map wdt for mpc52xx_restart() */
mpc52xx_map_wdt();
mpc52xx_setup_pci();
}
/* list of the supported boards */
static char *board[] __initdata = {
"promess,motionpro",
"schindler,cm5200",
"tqc,tqm5200",
NULL
};
/*
* Called very early, MMU is off, device-tree isn't unflattened
*/
static int __init mpc5200_simple_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(mpc5200_simple_platform) {
.name = "mpc5200-simple-platform",
.probe = mpc5200_simple_probe,
.setup_arch = mpc5200_simple_setup_arch,
.init = mpc52xx_declare_of_platform_devices,
.init_IRQ = mpc52xx_init_irq,
.get_irq = mpc52xx_get_irq,
.restart = mpc52xx_restart,
.calibrate_decr = generic_calibrate_decr,
};