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
Signed-off-by: Marian Balakowicz <[EMAIL PROTECTED]>
---
arch/powerpc/boot/dts/lite5200.dts | 2 -
arch/powerpc/boot/dts/lite5200b.dts | 2 -
arch/powerpc/platforms/52xx/Kconfig | 18 ++++++-
arch/powerpc/platforms/52xx/Makefile | 1
arch/powerpc/platforms/52xx/mpc5200_simple.c | 72 ++++++++++++++++++++++++++
5 files changed, 91 insertions(+), 4 deletions(-)
create mode 100644 arch/powerpc/platforms/52xx/mpc5200_simple.c
diff --git a/arch/powerpc/boot/dts/lite5200.dts
b/arch/powerpc/boot/dts/lite5200.dts
index 6731763..5902362 100644
--- a/arch/powerpc/boot/dts/lite5200.dts
+++ b/arch/powerpc/boot/dts/lite5200.dts
@@ -19,7 +19,7 @@
/ {
model = "fsl,lite5200";
// revision = "1.0";
- compatible = "fsl,lite5200","generic-mpc5200";
+ compatible = "fsl,lite5200";
#address-cells = <1>;
#size-cells = <1>;
diff --git a/arch/powerpc/boot/dts/lite5200b.dts
b/arch/powerpc/boot/dts/lite5200b.dts
index b540388..b509129 100644
--- a/arch/powerpc/boot/dts/lite5200b.dts
+++ b/arch/powerpc/boot/dts/lite5200b.dts
@@ -19,7 +19,7 @@
/ {
model = "fsl,lite5200b";
// revision = "1.0";
- compatible = "fsl,lite5200b","generic-mpc5200";
+ compatible = "fsl,lite5200b";
#address-cells = <1>;
#size-cells = <1>;
diff --git a/arch/powerpc/platforms/52xx/Kconfig
b/arch/powerpc/platforms/52xx/Kconfig
index 2938d49..b8a6ebc 100644
--- a/arch/powerpc/platforms/52xx/Kconfig
+++ b/arch/powerpc/platforms/52xx/Kconfig
@@ -19,6 +19,22 @@ 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
+ 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
+
config PPC_EFIKA
bool "bPlan Efika 5k2. MPC5200B based computer"
depends on PPC_MULTIPLATFORM && PPC32
@@ -34,5 +50,3 @@ config PPC_LITE5200
select WANT_DEVICE_TREE
select PPC_MPC5200
default n
-
-
diff --git a/arch/powerpc/platforms/52xx/Makefile
b/arch/powerpc/platforms/52xx/Makefile
index 307dbc1..fe1b81b 100644
--- a/arch/powerpc/platforms/52xx/Makefile
+++ b/arch/powerpc/platforms/52xx/Makefile
@@ -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
diff --git a/arch/powerpc/platforms/52xx/mpc5200_simple.c
b/arch/powerpc/platforms/52xx/mpc5200_simple.c
new file mode 100644
index 0000000..618cf24
--- /dev/null
+++ b/arch/powerpc/platforms/52xx/mpc5200_simple.c
@@ -0,0 +1,72 @@
+/*
+ * Support for 'mpc5200-simple-platform' compatible boards.
+ *
+ * Written by Marian Balakowicz <[EMAIL PROTECTED]>
+ * 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
+ */
+
+#undef DEBUG
+#include <linux/init.h>
+#include <linux/pci.h>
+#include <linux/of.h>
+#include <asm/time.h>
+#include <asm/io.h>
+#include <asm/machdep.h>
+#include <asm/prom.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();
+}
+
+/*
+ * 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();
+
+ if (!of_flat_dt_is_compatible(node, "mpc5200-simple-platform"))
+ return 0;
+ return 1;
+}
+
+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,
+};
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