linux-kernel - [PATCH 1/4] arch/powerpc/44x/fsp2: platform support for fsp2(476fpe) board

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Message-Id: <20170515130754.59363-2-ivan@de.ibm.com>
Date:   Mon, 15 May 2017 16:07:51 +0300
From:   Ivan Mikhaylov <ivan@...ibm.com>
To:     Alistair Popple <alistair@...ple.id.au>,
        Matt Porter <mporter@...nel.crashing.org>
Cc:     linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Joel Stanley <joel@...abs.au.ibm.com>,
        Paul Mackerras <paulus@...ba.org>,
        Michael Ellerman <mpe@...erman.id.au>
Subject: [PATCH 1/4] arch/powerpc/44x/fsp2: platform support for fsp2(476fpe) board

Add platform code support for FSP2 (476fpe) board.

Signed-off-by: Ivan Mikhaylov <ivan@...ibm.com>
---
 arch/powerpc/platforms/44x/Kconfig  |   12 +++++++
 arch/powerpc/platforms/44x/Makefile |    1 +
 arch/powerpc/platforms/44x/fsp2.c   |   62 +++++++++++++++++++++++++++++++++++
 3 files changed, 75 insertions(+), 0 deletions(-)
 create mode 100644 arch/powerpc/platforms/44x/fsp2.c

diff --git a/arch/powerpc/platforms/44x/Kconfig b/arch/powerpc/platforms/44x/Kconfig
index 9b0afe9..01cb109 100644
--- a/arch/powerpc/platforms/44x/Kconfig
+++ b/arch/powerpc/platforms/44x/Kconfig
@@ -199,6 +199,18 @@ config CURRITUCK
 	help
 	  This option enables support for the IBM Currituck (476fpe) evaluation board
 
+config FSP2
+	bool "IBM FSP2 (476fpe) Support"
+	depends on PPC_47x
+	default n
+	select 476FPE
+	select IBM_EMAC_EMAC4 if IBM_EMAC
+	select IBM_EMAC_RGMII if IBM_EMAC
+	select COMMON_CLK
+	select DEFAULT_UIMAGE
+	help
+	  This option enables support for the IBM FSP2 (476fpe) board
+
 config AKEBONO
 	bool "IBM Akebono (476gtr) Support"
 	depends on PPC_47x
diff --git a/arch/powerpc/platforms/44x/Makefile b/arch/powerpc/platforms/44x/Makefile
index 26d35b5..72b8241 100644
--- a/arch/powerpc/platforms/44x/Makefile
+++ b/arch/powerpc/platforms/44x/Makefile
@@ -12,3 +12,4 @@ obj-$(CONFIG_ISS4xx)	+= iss4xx.o
 obj-$(CONFIG_CANYONLANDS)+= canyonlands.o
 obj-$(CONFIG_CURRITUCK)	+= ppc476.o
 obj-$(CONFIG_AKEBONO)	+= ppc476.o
+obj-$(CONFIG_FSP2)	+= fsp2.o
diff --git a/arch/powerpc/platforms/44x/fsp2.c b/arch/powerpc/platforms/44x/fsp2.c
new file mode 100644
index 0000000..92e9804
--- /dev/null
+++ b/arch/powerpc/platforms/44x/fsp2.c
@@ -0,0 +1,62 @@
+/*
+ * FSP-2 board specific routines
+ *
+ * Based on earlier code:
+ *    Matt Porter <mporter@...nel.crashing.org>
+ *    Copyright 2002-2005 MontaVista Software Inc.
+ *
+ *    Eugene Surovegin <eugene.surovegin@...tys.com> or <ebs@...home.net>
+ *    Copyright (c) 2003-2005 Zultys Technologies
+ *
+ *    Rewritten and ported to the merged powerpc tree:
+ *    Copyright 2007 David Gibson <dwg@....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 <linux/of_platform.h>
+#include <linux/rtc.h>
+
+#include <asm/machdep.h>
+#include <asm/prom.h>
+#include <asm/udbg.h>
+#include <asm/time.h>
+#include <asm/uic.h>
+#include <asm/ppc4xx.h>
+
+static __initdata struct of_device_id fsp2_of_bus[] = {
+	{ .compatible = "ibm,plb4", },
+	{ .compatible = "ibm,plb6", },
+	{ .compatible = "ibm,opb", },
+	{},
+};
+
+static int __init fsp2_device_probe(void)
+{
+	of_platform_bus_probe(NULL, fsp2_of_bus, NULL);
+	return 0;
+}
+machine_device_initcall(fsp2, fsp2_device_probe);
+
+static int __init fsp2_probe(void)
+{
+	unsigned long root = of_get_flat_dt_root();
+
+	if (!of_flat_dt_is_compatible(root, "ibm,fsp2"))
+		return 0;
+	return 1;
+}
+
+define_machine(fsp2) {
+	.name			= "FSP-2",
+	.probe			= fsp2_probe,
+	.progress		= udbg_progress,
+	.init_IRQ		= uic_init_tree,
+	.get_irq		= uic_get_irq,
+	.restart		= ppc4xx_reset_system,
+	.calibrate_decr		= generic_calibrate_decr,
+};
-- 
1.7.1