[POWERPC] 4xx: Base support for 440GX Taishan eval board

This patch adds base support for the AMCC Taishan 440GX evaluation
board.

Signed-off-by: Hugh Blemings <hugh@blemings.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>

3 files changed, 435 insertions, 1 deletions

diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile
index 8e5bdd35fd4..a20ad4bd735 100644
--- a/arch/powerpc/boot/Makefile
+++ b/arch/powerpc/boot/Makefile
@@ -37,8 +37,10 @@ BOOTCFLAGS	+= -I$(obj) -I$(srctree)/$(obj) -I$(srctree)/$(src)/libfdt
 
 $(obj)/4xx.o: BOOTCFLAGS += -mcpu=440
 $(obj)/ebony.o: BOOTCFLAGS += -mcpu=440
+$(obj)/cuboot-taishan.o: BOOTCFLAGS += -mcpu=440
 $(obj)/treeboot-walnut.o: BOOTCFLAGS += -mcpu=405
 
+
 zlib       := inffast.c inflate.c inftrees.c
 zlibheader := inffast.h inffixed.h inflate.h inftrees.h infutil.h
 zliblinuxheader := zlib.h zconf.h zutil.h
@@ -58,7 +60,7 @@ src-plat := of.c cuboot-52xx.c cuboot-83xx.c cuboot-85xx.c holly.c \
 		cuboot-ebony.c treeboot-ebony.c prpmc2800.c \
 		ps3-head.S ps3-hvcall.S ps3.c treeboot-bamboo.c cuboot-8xx.c \
 		cuboot-pq2.c cuboot-sequoia.c treeboot-walnut.c cuboot-bamboo.c \
-		fixed-head.S ep88xc.c cuboot-hpc2.c ep405.c
+		fixed-head.S ep88xc.c cuboot-hpc2.c ep405.c cuboot-taishan.c
 src-boot := $(src-wlib) $(src-plat) empty.c
 
 src-boot := $(addprefix $(obj)/, $(src-boot))
@@ -199,6 +201,7 @@ image-$(CONFIG_EBONY)			+= treeImage.ebony cuImage.ebony
 image-$(CONFIG_BAMBOO)			+= treeImage.bamboo cuImage.bamboo
 image-$(CONFIG_SEQUOIA)			+= cuImage.sequoia
 image-$(CONFIG_WALNUT)			+= treeImage.walnut
+image-$(CONFIG_TAISHAN)			+= cuImage.taishan
 endif
 
 # For 32-bit powermacs, build the COFF and miboot images
diff --git a/arch/powerpc/boot/cuboot-taishan.c b/arch/powerpc/boot/cuboot-taishan.c
new file mode 100644
index 00000000000..4ef92021d01
--- /dev/null
+++ b/arch/powerpc/boot/cuboot-taishan.c
@@ -0,0 +1,56 @@
+/*
+ * Old U-boot compatibility for Taishan
+ *
+ * Author: Hugh Blemings <hugh@au.ibm.com>
+ *
+ * Copyright 2007 Hugh Blemings, IBM Corporation.
+ *   Based on cuboot-ebony.c which is:
+ * Copyright 2007 David Gibson, IBM Corporation.
+ *   Based on cuboot-83xx.c, which is:
+ * Copyright (c) 2007 Freescale Semiconductor, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ */
+
+#include "ops.h"
+#include "stdio.h"
+#include "cuboot.h"
+#include "reg.h"
+#include "dcr.h"
+#include "4xx.h"
+
+#define TARGET_44x
+#include "ppcboot.h"
+
+static bd_t bd;
+
+BSS_STACK(4096);
+
+static void taishan_fixups(void)
+{
+	/* FIXME: sysclk should be derived by reading the FPGA
+	   registers */
+	unsigned long sysclk = 33000000;
+
+	/* 440EP Clock logic is all but identical to 440GX
+	   so we just use that code for now at least */
+	ibm440ep_fixup_clocks(sysclk, 6 * 1843200);
+
+	ibm4xx_fixup_memsize();
+
+	dt_fixup_mac_addresses(bd.bi_enetaddr, bd.bi_enet1addr);
+
+	ibm4xx_fixup_ebc_ranges("/plb/opb/ebc");
+}
+
+void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
+		   unsigned long r6, unsigned long r7)
+{
+	CUBOOT_INIT();
+
+	platform_ops.fixups = taishan_fixups;
+	fdt_init(_dtb_start);
+	serial_console_init();
+}
diff --git a/arch/powerpc/boot/dts/taishan.dts b/arch/powerpc/boot/dts/taishan.dts
new file mode 100644
index 00000000000..259972b594b
--- /dev/null
+++ b/arch/powerpc/boot/dts/taishan.dts
@@ -0,0 +1,375 @@
+/*
+ * Device Tree Source for IBM/AMCC Taishan
+ *
+ * Copyright 2007 IBM Corp.
+ * Hugh Blemings <hugh@au.ibm.com> based off code by
+ * Josh Boyer <jwboyer@linux.vnet.ibm.com>, David Gibson <dwg@au1.ibm.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2.  This program is licensed "as is" without
+ * any warranty of any kind, whether express or implied.
+ */
+
+/ {
+	#address-cells = <2>;
+	#size-cells = <1>;
+	model = "amcc,taishan";
+	compatible = "amcc,taishan";
+	dcr-parent = <&/cpus/PowerPC,440GX@0>;
+
+	cpus {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		PowerPC,440GX@0 {
+			device_type = "cpu";
+			reg = <0>;
+			clock-frequency = <2FAF0800>; // 800MHz
+			timebase-frequency = <0>; // Filled in by zImage
+			i-cache-line-size = <32>;
+			d-cache-line-size = <32>;
+			i-cache-size = <8000>; /* 32 kB */
+			d-cache-size = <8000>; /* 32 kB */
+			dcr-controller;
+			dcr-access-method = "native";
+		};
+	};
+
+	memory {
+		device_type = "memory";
+		reg = <0 0 0>; // Filled in by zImage
+	};
+
+
+	UICB0: interrupt-controller-base {
+		compatible = "ibm,uic-440gx", "ibm,uic";
+		interrupt-controller;
+		cell-index = <3>;
+		dcr-reg = <200 009>;
+		#address-cells = <0>;
+		#size-cells = <0>;
+		#interrupt-cells = <2>;
+	};
+
+
+	UIC0: interrupt-controller0 {
+		compatible = "ibm,uic-440gx", "ibm,uic";
+		interrupt-controller;
+		cell-index = <0>;
+		dcr-reg = <0c0 009>;
+		#address-cells = <0>;
+		#size-cells = <0>;
+		#interrupt-cells = <2>;
+		interrupts = <01 4 00 4>; /* cascade - first non-critical */
+		interrupt-parent = <&UICB0>;
+
+	};
+
+	UIC1: interrupt-controller1 {
+		compatible = "ibm,uic-440gx", "ibm,uic";
+		interrupt-controller;
+		cell-index = <1>;
+		dcr-reg = <0d0 009>;
+		#address-cells = <0>;
+		#size-cells = <0>;
+		#interrupt-cells = <2>;
+		interrupts = <03 4 02 4>; /* cascade */
+		interrupt-parent = <&UICB0>;
+	};
+
+	UIC2: interrupt-controller2 {
+		compatible = "ibm,uic-440gx", "ibm,uic";
+		interrupt-controller;
+		cell-index = <2>; /* was 1 */
+		dcr-reg = <210 009>;
+		#address-cells = <0>;
+		#size-cells = <0>;
+		#interrupt-cells = <2>;
+		interrupts = <05 4 04 4>; /* cascade */
+		interrupt-parent = <&UICB0>;
+	};
+
+
+	CPC0: cpc {
+		compatible = "ibm,cpc-440gp";
+		dcr-reg = <0b0 003 0e0 010>;
+		// FIXME: anything else?
+	};
+
+	plb {
+		compatible = "ibm,plb-440gx", "ibm,plb4";
+		#address-cells = <2>;
+		#size-cells = <1>;
+		ranges;
+		clock-frequency = <9896800>; // 160MHz
+
+		SDRAM0: memory-controller {
+			compatible = "ibm,sdram-440gp";
+			dcr-reg = <010 2>;
+			// FIXME: anything else?
+		};
+
+		SRAM0: sram {
+			compatible = "ibm,sram-440gp";
+			dcr-reg = <020 8 00a 1>;
+		};
+
+		DMA0: dma {
+			// FIXME: ???
+			compatible = "ibm,dma-440gp";
+			dcr-reg = <100 027>;
+		};
+
+		MAL0: mcmal {
+			compatible = "ibm,mcmal-440gx", "ibm,mcmal2";
+			dcr-reg = <180 62>;
+			num-tx-chans = <4>;
+			num-rx-chans = <4>;
+			interrupt-parent = <&MAL0>;
+			interrupts = <0 1 2 3 4>;
+			#interrupt-cells = <1>;
+			#address-cells = <0>;
+			#size-cells = <0>;
+			interrupt-map = </*TXEOB*/ 0 &UIC0 a 4
+					 /*RXEOB*/ 1 &UIC0 b 4
+					 /*SERR*/  2 &UIC1 0 4
+					 /*TXDE*/  3 &UIC1 1 4
+					 /*RXDE*/  4 &UIC1 2 4>;
+			interrupt-map-mask = <ffffffff>;
+		};
+
+		POB0: opb {
+			compatible = "ibm,opb-440gx", "ibm,opb";
+			#address-cells = <1>;
+			#size-cells = <1>;
+			/* Wish there was a nicer way of specifying a full 32-bit
+			   range */
+			ranges = <00000000 1 00000000 80000000
+				  80000000 1 80000000 80000000>;
+			dcr-reg = <090 00b>;
+			interrupt-parent = <&UIC1>;
+			interrupts = <7 4>;
+			clock-frequency = <4C4B400>; // 80MHz
+
+
+			EBC0: ebc {
+				compatible = "ibm,ebc-440gx", "ibm,ebc";
+				dcr-reg = <012 2>;
+				#address-cells = <2>;
+				#size-cells = <1>;
+				clock-frequency = <4C4B400>; // 80MHz
+
+				/* ranges property is supplied by zImage
+				 * based on firmware's configuration of the
+				 * EBC bridge */
+
+				interrupts = <5 4>;
+				interrupt-parent = <&UIC1>;
+
+				/* TODO: Add other EBC devices */
+			};
+
+
+
+			UART0: serial@40000200 {
+				device_type = "serial";
+				compatible = "ns16550";
+				reg = <40000200 8>;
+				virtual-reg = <e0000200>;
+ 				clock-frequency = <A8C000>;
+				current-speed = <1C200>; /* 115200 */
+				interrupt-parent = <&UIC0>;
+				interrupts = <0 4>;
+			};
+
+			UART1: serial@40000300 {
+				device_type = "serial";
+				compatible = "ns16550";
+				reg = <40000300 8>;
+				virtual-reg = <e0000300>;
+				clock-frequency = <A8C000>;
+				current-speed = <1C200>; /* 115200 */
+				interrupt-parent = <&UIC0>;
+				interrupts = <1 4>;
+			};
+
+			IIC0: i2c@40000400 {
+				/* FIXME */
+				device_type = "i2c";
+				compatible = "ibm,iic-440gp", "ibm,iic";
+				reg = <40000400 14>;
+				interrupt-parent = <&UIC0>;
+				interrupts = <2 4>;
+			};
+			IIC1: i2c@40000500 {
+				/* FIXME */
+				device_type = "i2c";
+				compatible = "ibm,iic-440gp", "ibm,iic";
+				reg = <40000500 14>;
+				interrupt-parent = <&UIC0>;
+				interrupts = <3 4>;
+			};
+
+			GPIO0: gpio@40000700 {
+				/* FIXME */
+				compatible = "ibm,gpio-440gp";
+				reg = <40000700 20>;
+			};
+
+			ZMII0: emac-zmii@40000780 {
+				device_type = "zgmii-interface";
+				compatible = "ibm,zmii-440gx", "ibm,zmii";
+				reg = <40000780 c>;
+			};
+
+			RGMII0: emac-rgmii@40000790 {
+				device_type = "rgmii-interface";
+				compatible = "ibm,rgmii";
+				reg = <40000790 8>;
+			};
+
+
+			EMAC0: ethernet@40000800 {
+				unused = <1>;
+				linux,network-index = <2>;
+				device_type = "network";
+				compatible = "ibm,emac-440gx", "ibm,emac4";
+				interrupt-parent = <&UIC1>;
+				interrupts = <1c 4 1d 4>;
+				reg = <40000800 70>;
+				local-mac-address = [000000000000]; // Filled in by zImage
+				mal-device = <&MAL0>;
+				mal-tx-channel = <0>;
+				mal-rx-channel = <0>;
+				cell-index = <0>;
+				max-frame-size = <5dc>;
+				rx-fifo-size = <1000>;
+				tx-fifo-size = <800>;
+				phy-mode = "rmii";
+				phy-map = <00000001>;
+				zmii-device = <&ZMII0>;
+				zmii-channel = <0>;
+			};
+		 	EMAC1: ethernet@40000900 {
+				unused = <1>;
+				linux,network-index = <3>;
+				device_type = "network";
+				compatible = "ibm,emac-440gx", "ibm,emac4";
+				interrupt-parent = <&UIC1>;
+				interrupts = <1e 4 1f 4>;
+				reg = <40000900 70>;
+				local-mac-address = [000000000000]; // Filled in by zImage
+				mal-device = <&MAL0>;
+				mal-tx-channel = <1>;
+				mal-rx-channel = <1>;
+				cell-index = <1>;
+				max-frame-size = <5dc>;
+				rx-fifo-size = <1000>;
+				tx-fifo-size = <800>;
+				phy-mode = "rmii";
+				phy-map = <00000001>;
+ 				zmii-device = <&ZMII0>;
+				zmii-channel = <1>;
+			};
+
+		 	EMAC2: ethernet@40000c00 {
+				linux,network-index = <0>;
+				device_type = "network";
+				compatible = "ibm,emac-440gx", "ibm,emac4";
+				interrupt-parent = <&UIC2>;
+				interrupts = <0 4 1 4>;
+				reg = <40000c00 70>;
+				local-mac-address = [000000000000]; // Filled in by zImage
+				mal-device = <&MAL0>;
+				mal-tx-channel = <2>;
+				mal-rx-channel = <2>;
+				cell-index = <2>;
+				max-frame-size = <5dc>;
+				rx-fifo-size = <1000>;
+				tx-fifo-size = <800>;
+				phy-mode = "rgmii";
+				phy-map = <00000001>;
+				rgmii-device = <&RGMII0>;
+				rgmii-channel = <0>;
+ 				zmii-device = <&ZMII0>;
+				zmii-channel = <2>;
+			};
+
+		 	EMAC3: ethernet@40000e00 {
+				linux,network-index = <1>;
+				device_type = "network";
+				compatible = "ibm,emac-440gx", "ibm,emac4";
+				interrupt-parent = <&UIC2>;
+				interrupts = <2 4 3 4>;
+				reg = <40000e00 70>;
+				local-mac-address = [000000000000]; // Filled in by zImage
+				mal-device = <&MAL0>;
+				mal-tx-channel = <3>;
+				mal-rx-channel = <3>;
+				cell-index = <3>;
+				max-frame-size = <5dc>;
+				rx-fifo-size = <1000>;
+				tx-fifo-size = <800>;
+				phy-mode = "rgmii";
+				phy-map = <00000003>;
+				rgmii-device = <&RGMII0>;
+				rgmii-channel = <1>;
+ 				zmii-device = <&ZMII0>;
+				zmii-channel = <3>;
+			};
+
+
+			GPT0: gpt@40000a00 {
+				/* FIXME */
+				reg = <40000a00 d4>;
+				interrupt-parent = <&UIC0>;
+				interrupts = <12 4 13 4 14 4 15 4 16 4>;
+			};
+
+		};
+
+		PCIX0: pci@20ec00000 {
+			device_type = "pci";
+			#interrupt-cells = <1>;
+			#size-cells = <2>;
+			#address-cells = <3>;
+			compatible = "ibm,plb440gp-pcix", "ibm,plb-pcix";
+			primary;
+			large-inbound-windows;
+			enable-msi-hole;
+			reg = <2 0ec00000   8	/* Config space access */
+			       0 0 0		/* no IACK cycles */
+			       2 0ed00000   4   /* Special cycles */
+			       2 0ec80000 100	/* Internal registers */
+			       2 0ec80100  fc>;	/* Internal messaging registers */
+
+			/* Outbound ranges, one memory and one IO,
+			 * later cannot be changed
+			 */
+			ranges = <02000000 0 80000000 00000003 80000000 0 80000000
+				  01000000 0 00000000 00000002 08000000 0 00010000>;
+
+			/* Inbound 2GB range starting at 0 */
+			dma-ranges = <42000000 0 0 0 0 0 80000000>;
+
+			interrupt-map-mask = <f800 0 0 7>;
+			interrupt-map = <
+				/* IDSEL 1 */
+				0800 0 0 1 &UIC0 17 8
+				0800 0 0 2 &UIC0 18 8
+				0800 0 0 3 &UIC0 19 8
+				0800 0 0 4 &UIC0 1a 8
+
+				/* IDSEL 2 */
+				1000 0 0 1 &UIC0 18 8
+				1000 0 0 2 &UIC0 19 8
+				1000 0 0 3 &UIC0 1a 8
+				1000 0 0 4 &UIC0 17 8
+			>;
+		};
+	};
+
+	chosen {
+		linux,stdout-path = "/plb/opb/serial@40000300";
+	};
+};