[U-Boot-Users] Linux Hangs

Ganesh Ramachandran pganeshramachandran at gmail.com
Wed Mar 29 06:02:36 CEST 2006

My Name is Ganesh Ramachandran. I have a Problem in U-Boot Loaders. As Follows,

I am using ARM Integrator CP Configuration for U-Boot Loader. I am
using ARM Real View Simulator and Real View Debugger. My kernel
Version is 2.6.16 and U-Boot Loader Version is 1.1.4.

I am attaching my Configuration Header File with this mail. Just have
a look. I am using ARM Cross Compiler for creating U-Boot Loader
files( u-boot.Bin, u-boot). That was getting created successfully.

I am using AFU.axf utility to dump the root file system and kernel. I
am getting the following messages in Telnet while executing..

U-Boot 1.1.4 (Mar 28 2006 - 19:02:25)

U-Boot code: 01000000 -> 010134B0  BSS: -> 01016F98

RAM Configuration:

Bank #0: 00000000 16 MB

Flash: 16 MB

*** Warning - bad CRC, using default environment

In:    serial

Out:   serial

Err:   serial

Hit any key to stop autoboot:  0

Integrator-CP # bootm 0x24040000

## Booting image at 24040000 ...

   Image Name:   Linux-2.6.16

   Image Type:   ARM Linux Kernel Image (uncompressed)

   Data Size:    1093092 Bytes =  1 MB

   Load Address: 00008000

   Entry Point:  00008000


Starting kernel ...

Uncompressing Linux.......................................................................
done, booting the kernel.

After that Linux Gets hanged. I read the FAQs from several websites,
They said me to do following changes,

* Check the IMAP_ADDR, CFG_IMMR for same.

But I don't find any IMAP_ADDR or CFG_IMMR variables in my ARM
configuration files. Since, Both are not for ARM that I read in
another website.

* Check the Kernel Command Line.

      I gave root=/dev/mtdblock0 console=ttyAMA0 mem=128M for both
Kernel and Configuration files. And Root File system also has those
two files.

No other Comments gave any good information than above one. More They
above comment is also for PPC Version with Kernel 2.4.X and U-Boot
0.4.X. But I am using latest versions.

Please let me know where I am doing mistakes, Where will be the
problem persists.

Sorry for the inconvenience.

Thanks & Regards,

P. Ganesh Ramachandran
-------------- next part --------------
 * (C) Copyright 2003
 * Texas Instruments.
 * Kshitij Gupta <kshitij at ti.com>
 * Configuation settings for the TI OMAP Innovator board.
 * (C) Copyright 2004
 * ARM Ltd.
 * Philippe Robin, <philippe.robin at arm.com>
 * Configuration for Compact Integrator 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
 * 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 CFG_MEMTEST_START	0x100000
#define CFG_MEMTEST_END		0x10000000
#define CFG_HZ			1000
#define CFG_HZ_CLOCK		1000000	/* Timer 1 is clocked at 1Mhz */
#define CFG_TIMERBASE		0x13000100

#define CONFIG_CMDLINE_TAG		1	/* enable passing of ATAGs  */
#define CONFIG_MISC_INIT_R		1	/* call misc_init_r during start up */
 * Size of malloc() pool
#define CFG_MALLOC_LEN		(CFG_ENV_SIZE + 128*1024)
#define CFG_GBL_DATA_SIZE	128	/* size in bytes reserved for initial data */

 * Hardware drivers
#define CONFIG_DRIVER_SMC91111
#define CONFIG_SMC91111_BASE    0xC8000000
#undef CONFIG_SMC91111_EXT_PHY

 * NS16550 Configuration
#define CFG_PL011_SERIAL
#define CONFIG_PL011_CLOCK	14745600
#define CONFIG_PL01x_PORTS	{ (void *)CFG_SERIAL0, (void *)CFG_SERIAL1 }
#define CONFIG_BAUDRATE		38400
#define CFG_BAUDRATE_TABLE	{ 9600, 19200, 38400, 57600, 115200 }
#define CFG_SERIAL0		0x16000000
#define CFG_SERIAL1		0x17000000



/* this must be included AFTER the definition of CONFIG_COMMANDS (if any) */
#include <cmd_confdefs.h>

//#if 0
//#define CONFIG_BOOTARGS	"root=/dev/nfs nfsroot=<IP address>:/<exported rootfs>  mem=128M ip=dhcp netdev=27,0,0xfc800000,0xfc800010,eth0 video=clcdfb:0"
//#define CONFIG_BOOTCOMMAND "bootp ; bootm"
/* The kernel command line & boot command below are for a platform flashed with afu.axf

Image 666 Block  0 End Block  0 address 0x24000000 exec 0x24000000- name u-boot
Image 667 Block  1 End Block 13 address 0x24040000 exec 0x24040000- name u-linux
Image 668 Block 14 End Block 33 address 0x24380000 exec 0x24380000- name rootfs
SIB at Block62 End Block62 address 0x24f80000

#define CONFIG_BOOTARGS		"root=/dev/mtdblock0 mem=128M console=ttyAMA0"

 * Miscellaneous configurable options
#define CFG_LONGHELP				/* undef to save memory */
#define CFG_PROMPT	"Integrator-CP # "	/* Monitor Command Prompt */
#define CFG_CBSIZE	256			/* Console I/O Buffer Size*/
/* Print Buffer Size */
#define CFG_MAXARGS	16			/* max number of command args */
#define CFG_BARGSIZE	CFG_CBSIZE		/* Boot Argument Buffer Size*/

#undef	CFG_CLKS_IN_HZ		/* everything, incl board info, in Hz */
#define CFG_LOAD_ADDR	0x7fc0	/* default load address */

 * Stack sizes
 * The stack sizes are set up in start.S using the settings below
#define CONFIG_STACKSIZE	(128*1024)	/* regular stack */
#define CONFIG_STACKSIZE_IRQ	(4*1024)	/* IRQ stack */
#define CONFIG_STACKSIZE_FIQ	(4*1024)	/* FIQ stack */

 * 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 	0x08000000	/* 128 MB */

 * FLASH and environment organization

 * Top varies according to amount fitted
 * Reserve top 4 blocks of flash
 * - ARM Boot Monitor
 * - Unused
 * - SIB block
 * - U-Boot environment
 * Base is always 0x24000000

#define CFG_FLASH_BASE		0x24000000
#define CFG_MAX_FLASH_SECT 	64
#define CFG_MAX_FLASH_BANKS	1		/* max number of memory banks */
#define PHYS_FLASH_SIZE 	0x01000000	/* 16MB */
#define CFG_FLASH_ERASE_TOUT	(2*CFG_HZ)	/* Timeout for Flash Erase */
#define CFG_FLASH_WRITE_TOUT	(2*CFG_HZ)	/* Timeout for Flash Write */

#define CFG_MONITOR_LEN		0x00100000
#define CFG_ENV_IS_IN_FLASH	(1)

 * Move up the U-Boot & monitor area if more flash is fitted.
 * If this U-Boot is to be run on Integrators with varying flash sizes,
 * drivers/cfi_flash.c::flash_init() can read the Integrator CP_FLASHPROG
 * register and dynamically assign CFG_ENV_ADDR & CFG_MONITOR_BASE
 * - CFG_MONITOR_BASE is set to indicate that the environment is not
 * embedded in the boot monitor(s) area
#if ( PHYS_FLASH_SIZE == 0x04000000 )

#define CFG_ENV_ADDR		0x27F00000
#define CFG_MONITOR_BASE	0x27F40000

#elif (PHYS_FLASH_SIZE == 0x02000000 )

#define CFG_ENV_ADDR		0x25F00000
#define CFG_MONITOR_BASE	0x25F40000


#define CFG_ENV_ADDR		0x24F00000
#define CFG_MONITOR_BASE	0x27F40000


#define CFG_ENV_SECT_SIZE	0x40000		/* 256KB */
#define CFG_ENV_SIZE		8192		/* 8KB */
 * CP control registers
#define CPCR_BASE		0xCB000000	/* CP Registers*/
#define OS_FLASHPROG		0x00000004	/* Flash register*/
#define CPMASK_FLWREN		0x2
#define CPMASK_FLVPPEN		0x1

 * The ARM boot monitor initializes the board.
 * However, the default U-Boot code also performs the initialization.
 * If desired, this can be prevented by defining SKIP_LOWLEVEL_INIT
 * - see documentation supplied with board for details of how to choose the
 * image to run at reset/power up
 * e.g. whether the ARM Boot Monitor runs before U-Boot



 * The ARM boot monitor does not relocate U-Boot.
 * However, the default U-Boot code performs the relocation check,
 * and may relocate the code if the memory map is changed.
 * If necessary this can be prevented by defining SKIP_RELOCATE_UBOOT


 * There are various dependencies on the core module (CM) fitted
 * Users should refer to their CM user guide
 * - when porting adjust u-boot/Makefile accordingly
 * to define the necessary CONFIG_ s for the CM involved
 * see e.g. cp_926ejs_config

#include "armcoremodule.h"

 * If CONFIG_SKIP_LOWLEVEL_INIT is not defined &
 * the core module has a CM_INIT register
 * then the U-Boot initialisation code will
 * e.g. ARM Boot Monitor or pre-loader is repeated once
 * (to re-initialise any existing CM_INIT settings to safe values).
 * This is usually not the desired behaviour since the platform
 * will either reboot into the ARM monitor (or pre-loader)
 * or continuously cycle thru it without U-Boot running,
 * depending upon the setting of Integrator/CP switch S2-4.
 * However it may be needed if Integrator/CP switch S2-1
 * is set OFF to boot direct into U-Boot.
 * In that case comment out the line below.

#endif /* __CONFIG_H */

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