aboutsummaryrefslogtreecommitdiff
path: root/arch/powerpc/platforms
diff options
context:
space:
mode:
authorMarian Balakowicz <m8@semihalf.com>2007-11-15 22:40:21 +1100
committerGrant Likely <grant.likely@secretlab.ca>2008-01-18 20:57:09 -0700
commit5b5820d08b8cc90ba0148bf8d4a5a1f792e9e8ba (patch)
tree6c5e744f235ea8dcf24fc937bdb015b75bedabdd /arch/powerpc/platforms
parent0238aa54b598af5919d82f6b196fd34f0182c78d (diff)
[POWERPC] mpc5200: Add generic support for simple MPC5200 based boards
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>
Diffstat (limited to 'arch/powerpc/platforms')
-rw-r--r--arch/powerpc/platforms/52xx/Kconfig27
-rw-r--r--arch/powerpc/platforms/52xx/Makefile1
-rw-r--r--arch/powerpc/platforms/52xx/mpc5200_simple.c85
3 files changed, 110 insertions, 3 deletions
diff --git a/arch/powerpc/platforms/52xx/Kconfig b/arch/powerpc/platforms/52xx/Kconfig
index 2938d4927b8..733a8063d40 100644
--- a/arch/powerpc/platforms/52xx/Kconfig
+++ b/arch/powerpc/platforms/52xx/Kconfig
@@ -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
-
-
diff --git a/arch/powerpc/platforms/52xx/Makefile b/arch/powerpc/platforms/52xx/Makefile
index 307dbc17809..fe1b81bb522 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 00000000000..754aa932f59
--- /dev/null
+++ b/arch/powerpc/platforms/52xx/mpc5200_simple.c
@@ -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,
+};