[PATCH 3/7] Basic Freescale MPC512x support
Grant Likely
grant.likely at secretlab.ca
Wed Jan 9 04:19:20 EST 2008
Looks pretty good; major comment is that it should be multiplatform enabled.
Cheers,
g.
On 1/8/08, John Rigby <jrigby at freescale.com> wrote:
> 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/*
>
> Signed-off-by: John Rigby <jrigby at freescale.com>
> ---
> arch/powerpc/Kconfig | 2 +-
> arch/powerpc/platforms/512x/Kconfig | 20 ++++++
> arch/powerpc/platforms/512x/Makefile | 4 +
> arch/powerpc/platforms/512x/mpc5121_ads.c | 90 +++++++++++++++++++++++++++++
> arch/powerpc/platforms/Kconfig | 8 +++
> arch/powerpc/platforms/Kconfig.cputype | 6 +-
> arch/powerpc/platforms/Makefile | 1 +
> 7 files changed, 127 insertions(+), 4 deletions(-)
> create mode 100644 arch/powerpc/platforms/512x/Kconfig
> create mode 100644 arch/powerpc/platforms/512x/Makefile
> create mode 100644 arch/powerpc/platforms/512x/mpc5121_ads.c
>
> diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
> index 66a3d8c..81c3f05 100644
> --- a/arch/powerpc/Kconfig
> +++ b/arch/powerpc/Kconfig
> @@ -470,7 +470,7 @@ config PCI
> bool "PCI support" if 40x || CPM2 || PPC_83xx || PPC_85xx || PPC_86xx \
> || PPC_MPC52xx || (EMBEDDED && (PPC_PSERIES || PPC_ISERIES)) \
> || PPC_PS3
> - default y if !40x && !CPM2 && !8xx && !PPC_83xx \
> + default y if !40x && !CPM2 && !8xx && !PPC_512x && !PPC_83xx \
> && !PPC_85xx && !PPC_86xx
> default PCI_PERMEDIA if !4xx && !CPM2 && !8xx
> default PCI_QSPAN if !4xx && !CPM2 && 8xx
> diff --git a/arch/powerpc/platforms/512x/Kconfig b/arch/powerpc/platforms/512x/Kconfig
> new file mode 100644
> index 0000000..399d279
> --- /dev/null
> +++ b/arch/powerpc/platforms/512x/Kconfig
> @@ -0,0 +1,20 @@
> +menu "Platform support"
> + depends on PPC_512x
> +
> +choice
> + prompt "Machine Type"
> + default MPC5121_ADS
You should drop this choice and make mpc512x support multiplatform instead.
You might also want to consider renaming platforms/52xx to
platforms/5xxx and putting the 512x boards there instead.
> +
> +config MPC5121_ADS
> + bool "Freescale MPC5121E ADS"
> + select DEFAULT_UIMAGE
> + help
> + This option enables support for the MPC5121E ADS board.
Make this depend on PPC_MULTIPLATFORM and PPC32
> +
> +endchoice
> +
> +config MPC5121
> + bool
> + default y if MPC5121_ADS
Drop the default and make the MPC5121_ADS select MPC5121.
Also I recommend change this to PPC_MPC5121 instead of MPC5121 (better
namespace)
> +
> +endmenu
> diff --git a/arch/powerpc/platforms/512x/Makefile b/arch/powerpc/platforms/512x/Makefile
> new file mode 100644
> index 0000000..232c89f
> --- /dev/null
> +++ b/arch/powerpc/platforms/512x/Makefile
> @@ -0,0 +1,4 @@
> +#
> +# Makefile for the Freescale PowerPC 512x linux kernel.
> +#
> +obj-$(CONFIG_MPC5121_ADS) += mpc5121_ads.o
> diff --git a/arch/powerpc/platforms/512x/mpc5121_ads.c b/arch/powerpc/platforms/512x/mpc5121_ads.c
> new file mode 100644
> index 0000000..a860bf0
> --- /dev/null
> +++ b/arch/powerpc/platforms/512x/mpc5121_ads.c
> @@ -0,0 +1,90 @@
> +/*
> + * Copyright (C) 2007 Freescale Semiconductor, Inc. All rights reserved.
> + *
> + * Author: John Rigby, <jrigby at 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/stddef.h>
> +#include <linux/kernel.h>
> +#include <linux/init.h>
> +#include <linux/errno.h>
> +#include <linux/reboot.h>
> +#include <linux/kdev_t.h>
> +#include <linux/major.h>
> +#include <linux/console.h>
> +#include <linux/delay.h>
> +#include <linux/seq_file.h>
> +#include <linux/root_dev.h>
> +#include <linux/time.h>
> +#include <linux/io.h>
> +#include <linux/irq.h>
> +
> +#include <asm/system.h>
> +#include <asm/atomic.h>
> +#include <asm/machdep.h>
> +#include <asm/ipic.h>
> +#include <asm/prom.h>
> +#include <asm/time.h>
> +#include <asm/of_platform.h>
> +
> +static void __init mpc5121_ads_setup_arch(void)
> +{
> + if (ppc_md.progress)
> + ppc_md.progress("mpc5121_ads_setup_arch()", 0);
> +
> + printk(KERN_INFO "MPC5121 ADS board from Freescale Semiconductor\n");
> +}
This function doesn't do anything; just drop it
> +
> +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, NULL, 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_node_by_type(NULL, "ipic");
> + if (!np)
> + return;
> +
> + ipic_init(np, 0);
> +
> + /*
> + * 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, "MPC5121ADS");
Use "fsl,mpc5121ads" instead.
> +}
> +
> +define_machine(mpc5121_ads) {
> + .name = "MPC5121 ADS",
> + .probe = mpc5121_ads_probe,
> + .setup_arch = mpc5121_ads_setup_arch,
> + .init = mpc5121_ads_declare_of_platform_devices,
> + .init_IRQ = mpc5121_ads_init_IRQ,
> + .get_irq = ipic_get_irq,
> + .calibrate_decr = generic_calibrate_decr,
> +};
> diff --git a/arch/powerpc/platforms/Kconfig b/arch/powerpc/platforms/Kconfig
> index ad9b1c0..1daf47f 100644
> --- a/arch/powerpc/platforms/Kconfig
> +++ b/arch/powerpc/platforms/Kconfig
> @@ -25,6 +25,13 @@ config PPC_83xx
> select IPIC
> select WANT_DEVICE_TREE
>
> +config PPC_512x
> + bool "Freescale 512x"
> + depends on 6xx
> + select FSL_SOC
> + select IPIC
> + select WANT_DEVICE_TREE
> +
Drop this entry so that 512x can be multiplatform instead.
> config PPC_86xx
> bool "Freescale 86xx"
> depends on 6xx
> @@ -41,6 +48,7 @@ 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"
> diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype
> index c3ee0b5..e21ffa5 100644
> --- a/arch/powerpc/platforms/Kconfig.cputype
> +++ b/arch/powerpc/platforms/Kconfig.cputype
> @@ -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"
5xxx maybe?
> select PPC_FPU
>
> config PPC_85xx
> @@ -229,7 +229,7 @@ config NR_CPUS
>
> config NOT_COHERENT_CACHE
> bool
> - depends on 4xx || 8xx || E200
> + depends on 4xx || 8xx || E200 || PPC_512x
> default y
>
> config CHECK_CACHE_COHERENCY
> diff --git a/arch/powerpc/platforms/Makefile b/arch/powerpc/platforms/Makefile
> index 6d9079d..633a599 100644
> --- a/arch/powerpc/platforms/Makefile
> +++ b/arch/powerpc/platforms/Makefile
> @@ -11,6 +11,7 @@ endif
> obj-$(CONFIG_PPC_CHRP) += chrp/
> obj-$(CONFIG_40x) += 40x/
> obj-$(CONFIG_44x) += 44x/
> +obj-$(CONFIG_PPC_512x) += 512x/
> obj-$(CONFIG_PPC_MPC52xx) += 52xx/
> obj-$(CONFIG_PPC_8xx) += 8xx/
> obj-$(CONFIG_PPC_82xx) += 82xx/
> --
> 1.5.3.5.726.g41a7a
>
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--
Grant Likely, B.Sc., P.Eng.
Secret Lab Technologies Ltd.
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