[U-Boot] [patch] csb337 board support (ARM at91rm9200)

12 Jun 2009

Add support for csb337, an older at91rm9200 board.  These boards
originally shipped with MicroMonitor, not U-Boot.  This config
supports boot from Ethernet, and talks over I2C and console.
Open issues:
  - Console refuses to start at 115200 baud, and misbehaves if it's
    later changed to that speed.  So, use 38400 (like MicroMonitor).
- USB didn't work; the software wouldn't detect usb-storage devices.
    So it's not yet enabled.
- There seems to be some issue copying lots of data from NOR flash.
    It works OK in chunks of up to 512 KB or so, but copying a kernel
    (1.4 MB) failed ... copying *way* over 15 MBytes, and trashing
    the DRAM image of U-Boot that was running.  (Compiler issue?)
Sending this along anyway; it basically works, bugs can be fixed later.
Signed-off-by: David Brownell dbrownell@users.sourceforge.net
---
NOTE:  depends on cpu/arm920t/at91rm9200/ether.c patch to change
how the Ethernet address is stored in chip registers so it matches
the old MicroMonitor bug that Linux is working around.
MAKEALL                  |    1 
 Makefile                 |    3 
 board/csb337/Makefile    |   49 +++++++++
 board/csb337/config.mk   |    1 
 board/csb337/csb337.c    |   74 +++++++++++++++
 board/csb337/u-boot.lds  |   56 +++++++++++
 include/configs/csb337.h |  222 +++++++++++++++++++++++++++++++++++++++++++++
 7 files changed, 406 insertions(+)

--- a/MAKEALL
+++ b/MAKEALL
@@ -579,6 +579,7 @@ LIST_at91="		\
    at91sam9g20ek	\
    at91sam9rlek	\
    cmc_pu2		\
+	csb337		\
    csb637		\
    kb9202		\
    mp2usb		\
--- a/Makefile
+++ b/Makefile
@@ -2638,6 +2638,9 @@ at91rm9200ek_config	:	unconfig
 cmc_pu2_config	:	unconfig
    @$(MKCONFIG) $(@:_config=) arm arm920t cmc_pu2 NULL at91rm9200
+csb337_config	:	unconfig
+	@$(MKCONFIG) $(@:_config=) arm arm920t csb337 NULL at91rm9200
+
 csb637_config	:	unconfig
    @$(MKCONFIG) $(@:_config=) arm arm920t csb637 NULL at91rm9200
--- /dev/null
+++ b/board/csb337/Makefile
@@ -0,0 +1,49 @@
+#
+# (C) Copyright 2003-2006
+# Wolfgang Denk, DENX Software Engineering, wd@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	+= $(BOARD).o
+
+SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
+OBJS	:= $(addprefix $(obj),$(COBJS))
+SOBJS	:= $(addprefix $(obj),$(SOBJS))
+
+$(LIB):	$(obj).depend $(OBJS) $(SOBJS)
+	$(AR) $(ARFLAGS) $@ $(OBJS) $(SOBJS)
+
+clean:
+	rm -f $(SOBJS) $(OBJS)
+
+distclean:	clean
+	rm -f $(LIB) core *.bak .depend
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
--- /dev/null
+++ b/board/csb337/config.mk
@@ -0,0 +1 @@
+TEXT_BASE = 0x21f00000
--- /dev/null
+++ b/board/csb337/csb337.c
@@ -0,0 +1,74 @@
+/*
+ * Copyright (C) 2009 David Brownell
+ *
+ * Based on csb637 support:
+ *
+ * (C) Copyright 2005
+ *	REA Elektronik GmbH <www.rea.de>
+ *	Anders Larsen alarsen@rea.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 <asm/arch/AT91RM9200.h>
+#include <at91rm9200_net.h>
+#include <lxt971a.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+
+int board_init(void)
+{
+	/* Enable Ctrlc */
+	console_init_f();
+
+	gd->bd->bi_arch_number = MACH_TYPE_CSB337;
+	gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
+
+	return 0;
+}
+
+int dram_init(void)
+{
+	gd->bd->bi_dram[0].start = PHYS_SDRAM;
+	gd->bd->bi_dram[0].size = PHYS_SDRAM_SIZE;
+	return 0;
+}
+
+#if defined(CONFIG_DRIVER_ETHER) && defined(CONFIG_CMD_NET)
+
+/* The AT91 lxt972 glue modified the original lxt971 code by
+ * changing names and generalizing a bit.  So we use "lxt972"
+ * names here even though the CSB337 has an lxt971 chip.
+ */
+extern unsigned char lxt972_InitPhy(AT91S_EMAC *mac);
+extern unsigned lxt972_IsPhyConnected(AT91S_EMAC *mac);
+extern unsigned char lxt972_GetLinkSpeed(AT91S_EMAC *mac);
+extern unsigned char lxt972_AutoNegotiate(AT91S_EMAC *mac, int *status);
+
+void at91rm9200_GetPhyInterface(AT91S_PhyOps *ops)
+{
+	ops->Init = lxt972_InitPhy;
+	ops->IsPhyConnected = lxt972_IsPhyConnected;
+	ops->GetLinkSpeed = lxt972_GetLinkSpeed;
+	ops->AutoNegotiate = lxt972_AutoNegotiate;
+}
+
+#endif
--- /dev/null
+++ b/board/csb337/u-boot.lds
@@ -0,0 +1,56 @@
+/*
+ * (C) Copyright 2002
+ * Gary Jennejohn, DENX Software Engineering, garyj@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-littlearm", "elf32-littlearm", "elf32-littlearm")
+/*OUTPUT_FORMAT("elf32-arm", "elf32-arm", "elf32-arm")*/
+OUTPUT_ARCH(arm)
+ENTRY(_start)
+SECTIONS
+{
+	. = 0x00000000;
+
+	. = ALIGN(4);
+	.text      :
+	{
+	  cpu/arm920t/start.o	(.text)
+	  *(.text)
+	}
+
+	. = ALIGN(4);
+	.rodata : { *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.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) . = ALIGN(4); }
+	_end = .;
+}
--- /dev/null
+++ b/include/configs/csb337.h
@@ -0,0 +1,222 @@
+/*
+ * (C) Copyright 2005 REA Elektronik GmbH <www.rea.de>
+ * Anders Larsen alarsen@rea.de
+ *
+ * Configuation settings for the Cogent CSB337 board.
+ * Modified from CSB637 settings.
+ *
+ * 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
+
+#include <asm/sizes.h>
+
+/* CSB337 board from Cogent */
+#define CONFIG_MACH_CSB337
+#define CONFIG_AT91RM9200
+
+//#define CONFIG_SKIP_LOWLEVEL_INIT
+
+#define AT91_SLOW_CLOCK		32768		/* slow clock crystal */
+#define AT91_MAIN_CLOCK		3686400		/* 3.6864 MHz crystal */
+
+#define CONFIG_SYS_USE_MAIN_OSCILLATOR
+
+/* default timings shipped by Cogent (PLLA --> MCK):
+ *  184.32 MHz for CPU (PLLA)
+ *   46.08 MHz for memory and peripherals (PLL/4)
+ *   96.00 MHz for USB (PLLB)
+ */
+#define AT91_PLLA_DIV		1
+#define AT91_PLLA_MULT		50
+#define AT91_PLLA_CLOCK	((AT91_MAIN_CLOCK / AT91_PLLA_DIV) * AT91_PLLA_MULT)
+
+#define AT91_PLLB_DIV		24
+#define AT91_PLLB_MULT		625
+#define AT91_PLLB_CLOCK	((AT91_MAIN_CLOCK / AT91_PLLB_DIV) * AT91_PLLB_MULT)
+
+#define AT91C_MASTER_CLOCK	(AT91_PLLA_CLOCK / 4)
+
+#define CONFIG_SYS_HZ		1000
+
+/* NOTE:  uses TC0, not system timer. */
+#define CONFIG_SYS_HZ_CLOCK	(AT91C_MASTER_CLOCK / 2)
+
+/* clocks */
+#if 0	/* can't use this from startup.S, sigh */
+#define CONFIG_SYS_PLLAR_VAL \
+	( AT91C_CKGR_SRCA | AT91C_CKGR_OUTA_2 | (0x3e << 8) \
+	| ((AT91_PLLA_MULT - 1) << 16) | (AT91_PLLA_DIV << 0))
+#define CONFIG_SYS_PLLBR_VAL \
+	( AT91C_CKGR_USB_PLL | AT91C_CKGR_OUTB_0 | (0x3e << 8) \
+	| ((AT91_PLLB_MULT - 1) << 16) | (AT91_PLLB_DIV << 0))
+#define CONFIG_SYS_MCKR_VAL \
+	(AT91C_PMC_MDIV_4 | AT91C_PMC_CSS_PLLA_CLK)
+#else
+#define CONFIG_SYS_PLLAR_VAL	0x20313e01	/* 184.32 MHz */
+#define CONFIG_SYS_PLLBR_VAL	0x12703e18	/* 96.00 MHz (+div2) */
+#define CONFIG_SYS_MCKR_VAL	0x00000302	/* 46.00 MHz */
+#endif
+
+#define CONFIG_SYS_MC_PUIA_VAL	0x00000000	/* NOTE:  RESERVED ADDR! */
+#define CONFIG_SYS_MC_PUP_VAL	0x00000000	/* NOTE:  RESERVED ADDR! */
+#define CONFIG_SYS_MC_PUER_VAL	0x00000000	/* NOTE:  RESERVED ADDR! */
+#define CONFIG_SYS_MC_ASR_VAL	0x00000000	/* NOTE:  READ-ONLY REG! */
+#define CONFIG_SYS_MC_AASR_VAL	0x00000000	/* NOTE:  READ-ONLY REG! */
+
+/* 32 bit bus */
+#define CONFIG_SYS_EBI_CSA_VAL	0x00000002	/* CS0=SMC, CS1=SDRAM */
+#define CONFIG_SYS_EBI_CFGR_VAL	0x00000000	/* internal d15..d0 pullups */
+#define CONFIG_SYS_PIOC_ASR_VAL	0Xffff0000	/* pc31..pc16 are d31..d16 */
+#define CONFIG_SYS_PIOC_BSR_VAL	0x00000000
+#define CONFIG_SYS_PIOC_PDR_VAL	0xffff0000	/* internal d31..d16 pullups */
+
+/* CS0 == 16 bit flash */
+#define CONFIG_SYS_SMC_CSR0_VAL	0x1100328b	/* 16 bit, 2 TDF, 10 WS */
+
+/* CS1 == 32 bit SDRAM; timings are a function of the master clock speed */
+#define CONFIG_SYS_SDRC_CR_VAL	0x2188b0d5	/* SDRAM timings */
+#define CONFIG_SYS_SDRC_TR_VAL	0x00000200	/* Write refresh rate */
+
+/* except maybe for SDRAM1, none of these are board-specic */
+#define CONFIG_SYS_SDRAM	0x20000000	/* address of SDRAM */
+#define CONFIG_SYS_SDRAM1	0x20000080	/* address of SDRAM + mode register value */
+#define CONFIG_SYS_SDRAM_VAL	0x00000000	/* scratch value written to SDRAM */
+#define CONFIG_SYS_SDRC_MR_VAL	0x00000002	/* Precharge All */
+#define CONFIG_SYS_SDRC_MR_VAL1	0x00000004	/* refresh */
+#define CONFIG_SYS_SDRC_MR_VAL2	0x00000003	/* Load Mode Register */
+#define CONFIG_SYS_SDRC_MR_VAL3	0x00000000	/* Normal Mode */
+
+/* define one of CONFIG_{DBGU,USART0,USART1} for console */
+#define CONFIG_AT91RM9200_USART
+#define CONFIG_DBGU
+
+#define CONFIG_BAUDRATE			38400
+#define CONFIG_SYS_BAUDRATE_TABLE	{115200, 57600, 38400, 19200, 9600,}
+
+/* RAM info */
+#define CONFIG_NR_DRAM_BANKS 1
+#define PHYS_SDRAM			0x20000000
+#define PHYS_SDRAM_SIZE			SZ_32M
+
+/* NOR flash (boot device) */
+#define CONFIG_FLASH_CFI_DRIVER
+#define CONFIG_SYS_FLASH_CFI
+#define CONFIG_SYS_FLASH_EMPTY_INFO
+#define CONFIG_SYS_FLASH_USE_BUFFER_WRITE
+
+/* NOR FLASH - one 28F640J03A, 16 bits */
+#define PHYS_FLASH_SIZE			SZ_8M
+#define CONFIG_SYS_FLASH_BASE		0x10000000
+#define CONFIG_SYS_FLASH_CFI_WIDTH      FLASH_CFI_16BIT
+#define CONFIG_SYS_FLASH_PROTECTION	1	/* hardware protection	*/
+#define CONFIG_SYS_MAX_FLASH_BANKS	1
+#define CONFIG_SYS_MAX_FLASH_SECT	64
+
+#define NOR_SECTOR_SIZE			SZ_128K
+
+#define CONFIG_MTD_PARTITIONS
+
+/* Ethernet, using full MII */
+#define CONFIG_DRIVER_ETHER
+
+#if 0
+/* REVISIT:  USB failed to enumerate devices of any kind ... sw issues */
+
+/* allow loading from USB media */
+#define CONFIG_USB_OHCI_NEW
+#define CONFIG_SYS_USB_OHCI_MAX_ROOT_PORTS	2
+#define CONFIG_SYS_USB_OHCI_REGS_BASE		AT91_USB_HOST_BASE
+#define CONFIG_SYS_USB_OHCI_SLOT_NAME		"at91-ohci"
+#define CONFIG_USB_STORAGE
+#endif
+
+/* I2C, RTC */
+#define CONFIG_HARD_I2C
+#define CONFIG_SYS_I2C_SPEED	100000
+#define CONFIG_SYS_I2C_SLAVE	0x08		/* SMBus host address */
+
+#define CONFIG_RTC_DS1307
+
+/* basic commands; and ones that need driver support */
+#include <config_cmd_default.h>
+
+#undef CONFIG_CMD_BDI
+#undef CONFIG_CMD_FPGA
+#undef CONFIG_CMD_XIMG
+
+#define CONFIG_CMD_DATE
+#define CONFIG_CMD_DHCP
+#define CONFIG_CMD_I2C
+#define CONFIG_CMD_JFFS2
+#define CONFIG_CMD_MTDPARTS
+#define CONFIG_CMD_PING
+
+#ifdef CONFIG_USB_OHCI_NEW
+#define CONFIG_CMD_USB
+#define CONFIG_DOS_PARTITION
+#define CONFIG_CMD_EXT2
+#define CONFIG_CMD_FAT
+#endif
+
+/* general U-Boot configuration */
+#undef  CONFIG_USE_IRQ			/* no IRQ/FIQ stuff	*/
+
+#define CONFIG_SYS_HUSH_PARSER
+#define CONFIG_SYS_CONSOLE_INFO_QUIET
+#define CONFIG_SYS_LONGHELP
+#define CONFIG_SYS_PROMPT		"CSB337# "
+#define CONFIG_SYS_PROMPT_HUSH_PS2	"> "
+
+#define CONFIG_CMDLINE_EDITING
+#define CONFIG_TIMESTAMP
+
+#define CONFIG_BOOTDELAY		3
+
+#define CONFIG_NET_RETRY_COUNT		10
+
+#define CONFIG_STACKSIZE		SZ_64K		/* regular stack */
+#define CONFIG_SYS_GBL_DATA_SIZE	128		/* for initial data */
+#define CONFIG_SYS_MALLOC_LEN		SZ_512K		/* heap */
+#define CONFIG_SYS_MEMTEST_END		(CONFIG_SYS_MEMTEST_START + SZ_16M)
+#define CONFIG_SYS_MEMTEST_START	PHYS_SDRAM
+
+#define CONFIG_SYS_CBSIZE		SZ_1K		/* Console I/O Buffer Size */
+#define CONFIG_SYS_MAXARGS		16
+#define CONFIG_SYS_PBSIZE		(2*CONFIG_SYS_CBSIZE)
+
+/* Linux interfacing */
+#define CONFIG_CMDLINE_TAG
+#define CONFIG_SETUP_MEMORY_TAGS
+#define CONFIG_SYS_LOAD_ADDR		0x21000000  /* default load address */
+
+/* flash layout: 3 sectors U-Boot, 1 sector env ... rest is configurable */
+#define UBOOT_SIZE			(3 * NOR_SECTOR_SIZE)
+#define CONFIG_ENV_SECT_SIZE		NOR_SECTOR_SIZE
+
+#define CONFIG_ENV_IS_IN_FLASH
+#define CONFIG_ENV_ADDR			(CONFIG_SYS_FLASH_BASE + UBOOT_SIZE)
+
+#define MTDIDS_DEFAULT			"nor0=physmap-flash.0"
+#define MTDPARTS_DEFAULT		"mtdparts=physmap-flash.0" \
+		":512k(bootloader)ro,-(filesystem)"
+
+#endif /* __CONFIG_H */

    