[U-Boot] [patch] csb337 board support (ARM at91rm9200)
David Brownell
david-b at pacbell.net
Fri Jun 12 23:58:58 CEST 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 at 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 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 += $(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 at 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 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-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 at 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 */
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