[U-Boot-Users] [PATCH] ixp: Support for NSLU2

[Rod Whitby <rod@whitby.id.au>]

This patch adds support for the Linksys NSLU2.

Signed-off-by: Rod Whitby <rod@whitby.id.au>

---
 MAINTAINERS                       |    4 +
 MAKEALL                           |    1 +
 Makefile                          |    3 +
 board/nslu2/Makefile              |   53 +++++++++
 board/nslu2/config.mk             |    1 +
 board/nslu2/load_sernum_ethaddr.c |   67 +++++++++++
 board/nslu2/nslu2.c               |   96 +++++++++++++++
 board/nslu2/u-boot.lds            |   56 +++++++++
 include/configs/nslu2.h           |  230 +++++++++++++++++++++++++++++++++++++
 lib_arm/board.c                   |    4 +-
 10 files changed, 513 insertions(+), 2 deletions(-)
 create mode 100644 board/nslu2/Makefile
 create mode 100644 board/nslu2/config.mk
 create mode 100644 board/nslu2/load_sernum_ethaddr.c
 create mode 100644 board/nslu2/nslu2.c
 create mode 100644 board/nslu2/u-boot.lds
 create mode 100644 include/configs/nslu2.h

diff --git a/MAINTAINERS b/MAINTAINERS
index dc13580..891ae00 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -564,6 +564,10 @@ Michael Schwingen <michael@schwingen.org>
 	actux3			xscale
 	actux4			xscale
 
+Rod Whitby <rod@whitby.id.au>
+
+	nslu2			xscale
+
 #########################################################################
 # x86 Systems:								#
 #									#
diff --git a/MAKEALL b/MAKEALL
index 0e1c0cb..2088e78 100755
--- a/MAKEALL
+++ b/MAKEALL
@@ -529,6 +529,7 @@ LIST_ixp="		\
 	actux4		\
 	ixdp425		\
 	ixdpg425	\
+	nslu2		\
 	pdnb3		\
 	scpu		\
 "
diff --git a/Makefile b/Makefile
index 2790865..ec3661e 100644
--- a/Makefile
+++ b/Makefile
@@ -2563,6 +2563,9 @@ ixdp425_config	:	unconfig
 ixdpg425_config	:	unconfig
 	@$(MKCONFIG) $(@:_config=) arm ixp ixdp425
 
+nslu2_config	:	unconfig
+	@$(MKCONFIG) $(@:_config=) arm ixp nslu2
+
 lubbock_config	:	unconfig
 	@$(MKCONFIG) $(@:_config=) arm pxa lubbock
 
diff --git a/board/nslu2/Makefile b/board/nslu2/Makefile
new file mode 100644
index 0000000..934bc1a
--- /dev/null
+++ b/board/nslu2/Makefile
@@ -0,0 +1,53 @@
+#
+# (C) Copyright 2008
+# Rod Whitby <rod@whitby.id.au>
+#
+# (C) Copyright 2000-2006
+# Wolfgang Denk, DENX Software Engineering, wd at denx.de.
+#
+# See file CREDITS for list of people who contributed to this
+# project.
+#
+# 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.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+# MA 02111-1307 USA
+#
+
+include $(TOPDIR)/config.mk
+
+LIB	= $(obj)lib$(BOARD).a
+
+COBJS	:= nslu2.o load_sernum_ethaddr.o
+
+SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
+OBJS	:= $(addprefix $(obj),$(COBJS))
+SOBJS	:= $(addprefix $(obj),$(SOBJS))
+
+$(LIB):	$(obj).depend $(OBJS)
+	$(AR) $(ARFLAGS) $@ $(OBJS)
+
+clean:
+	rm -f $(SOBJS) $(OBJS)
+
+distclean:	clean
+	rm -f $(LIB) core *.bak .depend
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
diff --git a/board/nslu2/config.mk b/board/nslu2/config.mk
new file mode 100644
index 0000000..6510cc4
--- /dev/null
+++ b/board/nslu2/config.mk
@@ -0,0 +1 @@
+TEXT_BASE = 0x01d00000
diff --git a/board/nslu2/load_sernum_ethaddr.c b/board/nslu2/load_sernum_ethaddr.c
new file mode 100644
index 0000000..5992fa8
--- /dev/null
+++ b/board/nslu2/load_sernum_ethaddr.c
@@ -0,0 +1,67 @@
+/*
+ * (C) Copyright 2008
+ * Rod Whitby <rod@whitby.id.au>
+ *
+ * (C) Copyright 2000, 2001, 2002
+ * Wolfgang Denk, DENX Software Engineering, wd at denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+
+/*-----------------------------------------------------------------------
+ * Linksys NSLU2 RedBoot Trailer Block:
+ *
+ * If we boot from RAM on a system which still contains the original
+ * RedBoot bootloader, check if the trailer signature exists and save
+ * the MAC address information it contains.
+ *
+ * 0x3ffb0: six byte binary mac address
+ * 0x3fff8: ' sErCoMm'
+ */
+
+void load_sernum_ethaddr (void)
+{
+	unsigned char *hwi;
+	unsigned char  ethaddr[19]; /* 6 x "%02X", + 1 */
+	unsigned short ih, ie;
+
+	/* Check for signature at the end of RedBoot partition */
+	/* If RedBoot has been replaced, this will not exist. */
+	hwi = (unsigned char *)(CFG_FLASH_BASE + CFG_SERCOMM_OFFSET);
+	if (strncmp((char *)hwi, " sErCoMm", 8)) {
+		return;
+	}
+
+	hwi = (unsigned char *)(CFG_FLASH_BASE + CFG_ETHADDR_OFFSET);
+	ie = 0;
+
+	/* copy MAC address */
+	for (ih = 0; ih < 6; ih++) {
+		sprintf((char *)&ethaddr[ie], "%02X:", hwi[ih]);
+		ie += 3;
+	}
+	ethaddr[--ie] = '\0';
+
+	/* set ethaddr if not yet defined */
+	if (getenv("ethaddr") == NULL) {
+		setenv ((char *)"ethaddr", (char *)ethaddr);
+	}
+}
diff --git a/board/nslu2/nslu2.c b/board/nslu2/nslu2.c
new file mode 100644
index 0000000..ca1a716
--- /dev/null
+++ b/board/nslu2/nslu2.c
@@ -0,0 +1,96 @@
+/*
+ * (C) Copyright 2008
+ * Rod Whitby <rod@whitby.id.au>
+ *
+ * (C) Copyright 2006
+ * Stefan Roese, DENX Software Engineering, sr at denx.de.
+ *
+ * (C) Copyright 2002
+ * Kyle Harris, Nexus Technologies, Inc. kharris at nexus-tech.net
+ *
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Marius Groeger <mgroeger@sysgo.de>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <command.h>
+#include <malloc.h>
+#include <asm/arch/ixp425.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/*
+ * Miscelaneous platform dependent initialisations
+ */
+int board_init (void)
+{
+	/* arch number of NSLU2 */
+	gd->bd->bi_arch_number = MACH_TYPE_NSLU2;
+
+	/* adress of boot parameters */
+	gd->bd->bi_boot_params = 0x00000100;
+
+	/*
+	 * Setup GPIO's for PCI interrupts
+	 */
+	GPIO_OUTPUT_DISABLE(CFG_GPIO_PCI_INTA_N);
+	GPIO_INT_ACT_LOW_SET(CFG_GPIO_PCI_INTA_N);
+	GPIO_OUTPUT_DISABLE(CFG_GPIO_PCI_INTB_N);
+	GPIO_INT_ACT_LOW_SET(CFG_GPIO_PCI_INTB_N);
+	GPIO_OUTPUT_DISABLE(CFG_GPIO_PCI_INTC_N);
+	GPIO_INT_ACT_LOW_SET(CFG_GPIO_PCI_INTC_N);
+
+	/*
+	 * Setup GPIO's for 33MHz clock output
+	 */
+	*IXP425_GPIO_GPCLKR = 0x01FF01FF;
+	GPIO_OUTPUT_ENABLE(CFG_GPIO_PCI_CLK);
+	GPIO_OUTPUT_ENABLE(CFG_GPIO_EXTBUS_CLK);
+
+	return 0;
+}
+
+/*
+ * Check Board Identity
+ */
+int checkboard(void)
+{
+	char *s = getenv("serial#");
+
+	puts("Board: NSLU2 - Linksys NSLU2");
+
+	if (s != NULL) {
+		puts(", serial# ");
+		puts(s);
+	}
+	putc('\n');
+
+	return (0);
+}
+
+int dram_init (void)
+{
+	gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
+	gd->bd->bi_dram[0].size  = PHYS_SDRAM_1_SIZE;
+
+	return (0);
+}
diff --git a/board/nslu2/u-boot.lds b/board/nslu2/u-boot.lds
new file mode 100644
index 0000000..58393d0
--- /dev/null
+++ b/board/nslu2/u-boot.lds
@@ -0,0 +1,56 @@
+/*
+ * (C) Copyright 2000
+ * Wolfgang Denk, DENX Software Engineering, wd at denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+OUTPUT_FORMAT("elf32-bigarm", "elf32-bigarm", "elf32-bigarm")
+OUTPUT_ARCH(arm)
+ENTRY(_start)
+SECTIONS
+{
+	. = 0x00000000;
+
+	. = ALIGN(4);
+	.text      :
+	{
+	  cpu/ixp/start.o	(.text)
+	  *(.text)
+	}
+
+	. = ALIGN(4);
+	.rodata : { *(.rodata) }
+
+	. = ALIGN(4);
+	.data : { *(.data) }
+
+	. = ALIGN(4);
+	.got : { *(.got) }
+
+	. = .;
+	__u_boot_cmd_start = .;
+	.u_boot_cmd : { *(.u_boot_cmd) }
+	__u_boot_cmd_end = .;
+
+	. = ALIGN(4);
+	__bss_start = .;
+	.bss (NOLOAD) : { *(.bss) }
+	_end = .;
+}
diff --git a/include/configs/nslu2.h b/include/configs/nslu2.h
new file mode 100644
index 0000000..879ca22
--- /dev/null
+++ b/include/configs/nslu2.h
@@ -0,0 +1,230 @@
+/*
+ * (C) Copyright 2008
+ * Rod Whitby <rod@whitby.id.au>
+ *
+ * (C) Copyright 2005-2006
+ * Stefan Roese, DENX Software Engineering, sr at denx.de.
+ *
+ * (C) Copyright 2003
+ * Martijn de Gouw, Prodrive B.V., martijn.de.gouw at prodrive.nl
+ *
+ * Configuation settings for the NSLU2 board.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef __CONFIG_H
+#define __CONFIG_H
+
+/*
+ * High Level Configuration Options (easy to change)
+ */
+#define CONFIG_IXP425		1	/* This is an IXP425 CPU	*/
+#define CONFIG_NSLU2		1	/* on a Linksys NSLU2 Board	*/
+
+#define CONFIG_DISPLAY_CPUINFO	1	/* display cpu info (and speed)	*/
+#define CONFIG_DISPLAY_BOARDINFO 1	/* display board info		*/
+
+/*
+ * Serial Console (soldering skills required)
+ */
+#define CONFIG_BAUDRATE		115200
+#define CFG_IXP425_CONSOLE	IXP425_UART1   /* we use UART1 for console */
+
+/*
+ * Network Console (no hardware modifications required)
+ */
+#define CONFIG_NETCONSOLE	1	/* UDP port 6666 on dhcp server */
+#define CFG_CONSOLE_IS_IN_ENV	1	/* Allow console to be changed	*/
+
+/*
+ * Boot Delay
+ */
+#define CONFIG_BOOTDELAY	5	/* autoboot after 5 seconds	*/
+#define CONFIG_ZERO_BOOTDELAY_CHECK 1	/* check for keypress on bootdelay==0 */
+
+/*
+ * Autoboot Command
+ */
+#define CONFIG_BOOTCOMMAND	"echo;"
+#undef	CONFIG_BOOTARGS
+
+/*
+ * Pre-boot Commands
+ */
+#define CONFIG_PREBOOT	"run setncip"
+
+/*
+ * Monitor Functions
+ */
+#include <config_cmd_default.h>
+
+#define CONFIG_CMD_DHCP
+#define CONFIG_CMD_ELF
+#define CONFIG_CMD_MII
+#define CONFIG_CMD_NET
+#define CONFIG_CMD_PING
+
+/*
+ * Ethernet (requires IxNpeMicrocode.c from Intel IXP4xx NPE Microcode package)
+ */
+#define CONFIG_IXP4XX_NPE	1	/* include IXP4xx NPE support	*/
+#define	CONFIG_PHY_ADDR		1	/* NPE0 PHY address		*/
+#define CONFIG_MII		1	/* MII PHY management		*/
+#define CONFIG_NET_MULTI	1	/* Required for netconsole support */
+#define CFG_RX_ETH_BUFFER	16	/* Number of ethernet rx buffers & descriptors */
+
+/*
+ * DHCP Advanced Options
+ */
+#define CONFIG_BOOTP_SUBNETMASK		1
+#define CONFIG_BOOTP_GATEWAY		1
+#define CONFIG_BOOTP_HOSTNAME		1
+#define CONFIG_BOOTP_NISDOMAIN		1
+#define CONFIG_BOOTP_BOOTPATH		1
+#define CONFIG_BOOTP_BOOTFILESIZE	1
+#define CONFIG_BOOTP_DNS		1
+#define CONFIG_BOOTP_SEND_HOSTNAME	1
+
+/*
+ * Vendor Parameter Protection
+ */
+#define CONFIG_ENV_OVERWRITE	1	/* Allow changing of the MAC address */
+
+/*
+ * Default Environment
+ */
+#define	CONFIG_EXTRA_ENV_SETTINGS					\
+	"hostname=nslu2\0"						\
+	"setncip=setenv autoload no;dhcp;setenv autoload;"		\
+		"setenv ncip ${serverip}\0"				\
+	"setnc=setenv stdin nc;setenv stdout nc;setenv stderr nc\0"	\
+	"setser=setenv stdin serial;setenv stdout serial;"		\
+		"setenv stderr serial\0"				\
+	"bootfile=/tftpboot/nslu2/uImage\0"				\
+	"rootpath=/tftpboot/nslu2/rootfs\0"				\
+	"nfsargs=setenv bootargs root=/dev/nfs rw "			\
+		"nfsroot=${serverip}:${rootpath}\0"			\
+	"addip=setenv bootargs ${bootargs} "				\
+		"ip=${ipaddr}:${serverip}:${gatewayip}:${netmask}"	\
+		":${hostname}:eth0:off panic=1\0"			\
+	"addtty=setenv bootargs ${bootargs} console=ttyS0,${baudrate}\0"\
+	"net_nfs=tftp 10000 ${bootfile};run nfsargs addip addtty;"	\
+		"bootm\0"						\
+	""
+
+/*
+ * Configuration Settings
+ */
+#define CFG_LONGHELP		1		/* undef to save memory		*/
+#define CFG_PROMPT		"=> "	/* Monitor Command Prompt	*/
+
+#define CFG_CBSIZE		256		/* Console I/O Buffer Size	*/
+#define CFG_PBSIZE (CFG_CBSIZE+sizeof(CFG_PROMPT)+16) /* Print Buffer Size */
+#define CFG_MAXARGS		16		/* max number of command args	*/
+#define CFG_BARGSIZE		CFG_CBSIZE	/* Boot Argument Buffer Size	*/
+
+#define CFG_BAUDRATE_TABLE	{ 9600, 19200, 38400, 57600, 115200 }
+
+#define CFG_MEMTEST_START	0x00400000	/* memtest works on	*/
+#define CFG_MEMTEST_END		0x00800000	/* 4 ... 8 MB in DRAM	*/
+
+#define CFG_LOAD_ADDR		0x00010000	/* default load address */
+
+#define CFG_MONITOR_BASE	CFG_FLASH_BASE
+#define CFG_MONITOR_LEN		(256 << 10)	/* Reserve 256 kB for Monitor	*/
+
+#define CFG_MALLOC_LEN		(256 << 10)
+
+#define CFG_FLASH_BASE		0x50000000
+
+#define CFG_MAX_FLASH_BANKS	1	/* max number of memory banks		*/
+#define CFG_MAX_FLASH_SECT	128	/* max number of sectors on one chip	*/
+
+#define CFG_FLASH_CFI		1	/* The flash is CFI compatible	*/
+#define CFG_FLASH_CFI_DRIVER	1	/* Use common CFI driver	*/
+
+#define CFG_FLASH_CFI_WIDTH	FLASH_CFI_16BIT	/* no byte writes on IXP4xx	*/
+
+#define CFG_FLASH_EMPTY_INFO	1	/* print 'E' for empty sector on flinfo */
+#define CFG_FLASH_USE_BUFFER_WRITE 1	/* use buffered writes (20x faster)	*/
+
+#define CFG_ENV_IS_IN_FLASH	1
+#define CFG_ENV_OFFSET		0x40000	/* use the sysconfig partition */
+#define CFG_ENV_SECT_SIZE	0x20000	/* size of one complete sector	*/
+#define CFG_ENV_SIZE		0x2000	/* Total Size of Environment Sector	*/
+
+#define CFG_ETHADDR_OFFSET	0x3FFB0	/* Location of MAC address in flash */
+#define CFG_SERCOMM_OFFSET	0x3FFF8	/* Location of " sErCoMm" signature */
+
+#define CFG_CACHELINE_SIZE	32
+
+#define CFG_HZ			33000000	/* NSLU2 has a 33.000 MHz crystal */
+
+#define CONFIG_STACKSIZE	(128*1024)	/* regular stack */
+
+#define CFG_GBL_DATA_SIZE	128	/* size in bytes reserved for initial data */
+
+/*
+ * Platform/Board Specific Defines
+ */
+#define CONFIG_SETUP_MEMORY_TAGS 1
+#define CONFIG_CMDLINE_TAG	1
+#define CONFIG_INITRD_TAG	1
+
+/*
+ * Physical Memory Map
+ */
+#define CONFIG_NR_DRAM_BANKS	1	   /* we have 1 bank of DRAM */
+#define PHYS_SDRAM_1		0x00000000 /* SDRAM Bank #1 */
+#define PHYS_SDRAM_1_SIZE	0x02000000 /* 32 MB */
+
+/*
+ * Expansion bus settings
+ */
+#define CFG_EXP_CS0		0xbcd23c42
+
+/*
+ * SDRAM settings
+ */
+#define CFG_SDR_CONFIG		0x18
+#define CFG_SDR_MODE_CONFIG	0x1
+#define CFG_SDRAM_REFRESH_CNT	0x81a
+
+/*
+ * GPIO settings
+ */
+#define CFG_GPIO_STATUS_LED	 0
+#define CFG_GPIO_READY_LED	 1
+#define CFG_GPIO_DISK2_LED	 2
+#define CFG_GPIO_DISK1_LED	 3
+#define CFG_GPIO_BUZZER		 4
+#define CFG_GPIO_POWER_IN	 5
+#define CFG_GPIO_I2C_SCL	 6
+#define CFG_GPIO_I2C_SDA	 7
+#define CFG_GPIO_POWER_OFF	 8
+#define CFG_GPIO_PCI_INTC_N	 9
+#define CFG_GPIO_PCI_INTB_N	10
+#define CFG_GPIO_PCI_INTA_N	11
+#define CFG_GPIO_RESET_IN	12
+#define CFG_GPIO_PCI_RESET	13
+#define CFG_GPIO_PCI_CLK	14
+#define CFG_GPIO_EXTBUS_CLK	15
+
+#endif	/* __CONFIG_H */
diff --git a/lib_arm/board.c b/lib_arm/board.c
index 22d573a..a388d5d 100644
--- a/lib_arm/board.c
+++ b/lib_arm/board.c
@@ -396,9 +396,9 @@ void start_armboot (void)
 
 	devices_init ();	/* get the devices list going. */
 
-#ifdef CONFIG_CMC_PU2
+#if defined(CONFIG_CMC_PU2) || defined (CONFIG_NSLU2)
 	load_sernum_ethaddr ();
-#endif /* CONFIG_CMC_PU2 */
+#endif /* CONFIG_CMC_PU2 || CONFIG_NSLU2 */
 
 	jumptable_init ();
 
-- 
1.5.2.5