summaryrefslogtreecommitdiffstats
path: root/arch/powerpc/platforms/44x
diff options
context:
space:
mode:
Diffstat (limited to 'arch/powerpc/platforms/44x')
-rw-r--r--arch/powerpc/platforms/44x/44x.h8
-rw-r--r--arch/powerpc/platforms/44x/Kconfig56
-rw-r--r--arch/powerpc/platforms/44x/Makefile2
-rw-r--r--arch/powerpc/platforms/44x/ebony.c73
-rw-r--r--arch/powerpc/platforms/44x/misc_44x.S57
5 files changed, 196 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/44x/44x.h b/arch/powerpc/platforms/44x/44x.h
new file mode 100644
index 00000000000..42eabf87fea
--- /dev/null
+++ b/arch/powerpc/platforms/44x/44x.h
@@ -0,0 +1,8 @@
+#ifndef __POWERPC_PLATFORMS_44X_44X_H
+#define __POWERPC_PLATFORMS_44X_44X_H
+
+extern u8 as1_readb(volatile u8 __iomem *addr);
+extern void as1_writeb(u8 data, volatile u8 __iomem *addr);
+extern void ppc44x_reset_system(char *cmd);
+
+#endif /* __POWERPC_PLATFORMS_44X_44X_H */
diff --git a/arch/powerpc/platforms/44x/Kconfig b/arch/powerpc/platforms/44x/Kconfig
new file mode 100644
index 00000000000..8e66949e7c6
--- /dev/null
+++ b/arch/powerpc/platforms/44x/Kconfig
@@ -0,0 +1,56 @@
+#config BAMBOO
+# bool "Bamboo"
+# depends on 44x
+# default n
+# select 440EP
+# help
+# This option enables support for the IBM PPC440EP evaluation board.
+
+config EBONY
+ bool "Ebony"
+ depends on 44x
+ default y
+ select 440GP
+ help
+ This option enables support for the IBM PPC440GP evaluation board.
+
+#config LUAN
+# bool "Luan"
+# depends on 44x
+# default n
+# select 440SP
+# help
+# This option enables support for the IBM PPC440SP evaluation board.
+
+#config OCOTEA
+# bool "Ocotea"
+# depends on 44x
+# default n
+# select 440GX
+# help
+# This option enables support for the IBM PPC440GX evaluation board.
+
+# 44x specific CPU modules, selected based on the board above.
+config 440EP
+ bool
+ select PPC_FPU
+ select IBM440EP_ERR42
+
+config 440GP
+ bool
+ select IBM_NEW_EMAC_ZMII
+
+config 440GX
+ bool
+
+config 440SP
+ bool
+
+config 440A
+ bool
+ depends on 440GX
+ default y
+
+# 44x errata/workaround config symbols, selected by the CPU models above
+config IBM440EP_ERR42
+ bool
diff --git a/arch/powerpc/platforms/44x/Makefile b/arch/powerpc/platforms/44x/Makefile
new file mode 100644
index 00000000000..41d0a18a0e4
--- /dev/null
+++ b/arch/powerpc/platforms/44x/Makefile
@@ -0,0 +1,2 @@
+obj-$(CONFIG_44x) := misc_44x.o
+obj-$(CONFIG_EBONY) += ebony.o
diff --git a/arch/powerpc/platforms/44x/ebony.c b/arch/powerpc/platforms/44x/ebony.c
new file mode 100644
index 00000000000..ad526eafc90
--- /dev/null
+++ b/arch/powerpc/platforms/44x/ebony.c
@@ -0,0 +1,73 @@
+/*
+ * Ebony board specific routines
+ *
+ * Matt Porter <mporter@kernel.crashing.org>
+ * Copyright 2002-2005 MontaVista Software Inc.
+ *
+ * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net>
+ * Copyright (c) 2003-2005 Zultys Technologies
+ *
+ * Rewritten and ported to the merged powerpc tree:
+ * Copyright 2007 David Gibson <dwg@au1.ibm.com>, IBM Corporation.
+ *
+ * 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.
+ */
+
+#include <linux/init.h>
+#include <asm/machdep.h>
+#include <asm/prom.h>
+#include <asm/udbg.h>
+#include <asm/time.h>
+#include <asm/uic.h>
+#include <asm/of_platform.h>
+
+#include "44x.h"
+
+static struct of_device_id ebony_of_bus[] = {
+ { .type = "ibm,plb", },
+ { .type = "ibm,opb", },
+ { .type = "ibm,ebc", },
+ {},
+};
+
+static int __init ebony_device_probe(void)
+{
+ if (!machine_is(ebony))
+ return 0;
+
+ of_platform_bus_probe(NULL, ebony_of_bus, NULL);
+
+ return 0;
+}
+device_initcall(ebony_device_probe);
+
+/*
+ * Called very early, MMU is off, device-tree isn't unflattened
+ */
+static int __init ebony_probe(void)
+{
+ unsigned long root = of_get_flat_dt_root();
+
+ if (!of_flat_dt_is_compatible(root, "ibm,ebony"))
+ return 0;
+
+ return 1;
+}
+
+static void __init ebony_setup_arch(void)
+{
+}
+
+define_machine(ebony) {
+ .name = "Ebony",
+ .probe = ebony_probe,
+ .setup_arch = ebony_setup_arch,
+ .progress = udbg_progress,
+ .init_IRQ = uic_init_tree,
+ .get_irq = uic_get_irq,
+ .restart = ppc44x_reset_system,
+ .calibrate_decr = generic_calibrate_decr,
+};
diff --git a/arch/powerpc/platforms/44x/misc_44x.S b/arch/powerpc/platforms/44x/misc_44x.S
new file mode 100644
index 00000000000..3bce71d5d75
--- /dev/null
+++ b/arch/powerpc/platforms/44x/misc_44x.S
@@ -0,0 +1,57 @@
+/*
+ * This file contains miscellaneous low-level functions for PPC 44x.
+ * Copyright 2007 David Gibson <dwg@au1.ibm.com>, IBM Corporation.
+ *
+ * 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.
+ *
+ */
+
+#include <asm/reg.h>
+#include <asm/ppc_asm.h>
+
+ .text
+
+/*
+ * Do an IO access in AS1
+ */
+_GLOBAL(as1_readb)
+ mfmsr r7
+ ori r0,r7,MSR_DS
+ sync
+ mtmsr r0
+ sync
+ isync
+ lbz r3,0(r3)
+ sync
+ mtmsr r7
+ sync
+ isync
+ blr
+
+_GLOBAL(as1_writeb)
+ mfmsr r7
+ ori r0,r7,MSR_DS
+ sync
+ mtmsr r0
+ sync
+ isync
+ stb r3,0(r4)
+ sync
+ mtmsr r7
+ sync
+ isync
+ blr
+
+/*
+ * void ppc44x_reset_system(char *cmd)
+ *
+ * At present, this routine just applies a system reset.
+ */
+_GLOBAL(ppc44x_reset_system)
+ mfspr r13,SPRN_DBCR0
+ oris r13,r13,DBCR0_RST_SYSTEM@h
+ mtspr SPRN_DBCR0,r13
+ b . /* Just in case the reset doesn't work */