1、没修改之前，u-boot.bin烧入板中，在dnw终端显示操作如下：
U-Boot 1.1.6 (Nov 25 2009 - 22:15:51)
DRAM: 64 MB Flash: 1 MB NAND: 64 MiB *** Warning - bad CRC, using default environment
In: serial Out: serial Err: serial UPLLVal [M:28h,P:1h,S:2h] MPLLVal [M:5ch,P:4h,S:0h] CLKDIVN:3h
+---------------------------------------------+ | S3C2440A USB Downloader ver R0.03 2004 Jan | +---------------------------------------------+ USB: IN_ENDPOINT:1 OUT_ENDPOINT:3 FORMAT: <ADDR(DATA):4>+<SIZE(n+10):4>+<DATA:n>+<CS:2> NOTE: Power off/on or press the reset button for 1 sec in order to get a valid USB device address.
Hit any key to stop autoboot: 0 Booting Linux ...
NAND read: device 0 offset 0x0, size 0x200000
reading NAND page at offset 0x0 failed Could not read entire image due to bad blocks 2097152 bytes read: ERROR ## Booting image at 32000000 ... Bad Magic Number
##### 100ask Bootloader for OpenJTAG ##### Download u-boot [k] Download Linux kernel [j] Download JFFS2 image [y] Download YAFFS image [d] Download to SDRAM & Run Boot the system [f] Format the Nand Flash [s] Set the boot parameters
Reboot u-boot [q] Quit from menu Enter your selection:
在上面输入q后，再输入saveenv、reset保存不了变量。。。。
可能是没把新的环境变量保存到nandflash，由于我的ylp2410没有norflash。所以不修改100ask24x0.h，就是默认把它保存到norflash中，这个也是在事后修改程序后才发觉的。修改100ask24x0.h如下：
#ifndef __CONFIG_H #define __CONFIG_H
/* * High Level Configuration Options * (easy to change) */
#define CONFIG_ARM920T 1 /* This is an ARM920T Core */
#define CONFIG_S3C2410 1 /* in a SAMSUNG S3C2410 SoC */
#define CONFIG_SMDK2410 1 /* on a SAMSUNG SMDK2410 Board */
/* input clock of PLL */
#define CONFIG_SYS_CLK_FREQ 12000000/* the SMDK2410 has 12MHz input clock */
#define USE_920T_MMU 1
#define CONFIG_USB_DEVICE 1
#ifdef CONFIG_USB_DEVICE
#define CONFIG_USE_IRQ 1
#endif
#define CONFIG_JFFS2_CMDLINE 1
#define CONFIG_JFFS2_NAND 1
#define MTDIDS_DEFAULT "nand0=nandflash0"
#define MTDPARTS_DEFAULT "mtdparts=nandflash0:2m@0(kernel)," \
"8m(jffs2)," \
"-(yaffs)"
/*
* 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 */
#if 0
#define CONFIG_DRIVER_CS8900 1
/* we have a CS8900 on-board */
#define CS8900_BASE 0x19000300
#define CS8900_BUS16 1
/* the Linux driver does accesses as shorts */
#endif
#if !defined(CONFIG_DRIVER_CS8900)
#define CONFIG_DRIVER_DM9000 1
#define CONFIG_DM9000_USE_16BIT 1
#define CONFIG_DM9000_BASE 0x20000000
#define DM9000_IO 0x20000000
#define DM9000_DATA 0x20000004
#endif
/* * select serial console configuration */
#define CONFIG_SERIAL1 1 /* we use SERIAL 1 on SMDK2410 */
/************************************************************ * RTC ************************************************************/
#define CONFIG_RTC_S3C24X0 1
/* allow to overwrite serial and ethaddr */
#define CONFIG_ENV_OVERWRITE
#define CONFIG_BAUDRATE 115200
/* for tag(s) to transfer message to kernel, www.100ask.net */
#define CONFIG_SETUP_MEMORY_TAGS 1
#define CONFIG_CMDLINE_TAG 1
/*********************************************************** * Command definition ***********************************************************/
#define CONFIG_COMMANDS \
((CONFIG_CMD_DFL | \
CFG_CMD_CACHE | \
/* Start: by www.100ask.net */ \
/* CFG_CMD_PING | */ \
CFG_CMD_JFFS2 | \
CFG_CMD_NAND | \
/* End: by www.100ask.net */ \
/*CFG_CMD_EEPROM |*/ \
/*CFG_CMD_I2C |*/ \
/*CFG_CMD_USB |*/ \
CFG_CMD_REGINFO | \
CFG_CMD_DATE | \
CFG_CMD_ELF))
/* this must be included AFTER the definition of CONFIG_COMMANDS (if any) */
#include <cmd_confdefs.h>
#define CONFIG_BOOTDELAY 3
#define CONFIG_BOOTARGS "noinitrd root=/dev/mtdblock2 init=/linuxrc console=ttySAC0"
#define CONFIG_ETHADDR 08:00:3e:26:0a:5b #define CONFIG_NETMASK 255.255.255.0
#define CONFIG_IPADDR 192.168.7.17
#define CONFIG_SERVERIP 192.168.7.11 /*
#define CONFIG_BOOTFILE "elinos-lart" */
#define CONFIG_BOOTCOMMAND "nand read.jffs2 0x32000000 kernel; bootm 0x32000000"
#if (CONFIG_COMMANDS & CFG_CMD_KGDB) #define CONFIG_KGDB_BAUDRATE 115200 /* speed to run kgdb serial port */
/* what's this ? it's not used anywhere */
#define CONFIG_KGDB_SER_INDEX 1 /* which serial port to use */
#endif
/*
* Miscellaneous configurable options
*/
#define CFG_LONGHELP /* undef to save memory */
#define CFG_PROMPT "OpenJTAG> " /* 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_MEMTEST_START 0x30000000 /* memtest works on */
#define CFG_MEMTEST_END 0x33F00000 /* 63 MB in DRAM */
#undef CFG_CLKS_IN_HZ /* everything, incl board info, in Hz */
#define CFG_LOAD_ADDR 0x33000000 /* default load address */
/* the PWM TImer 4 uses a counter of 15625 for 10 ms, so we need */
/* it to wrap 100 times (total 1562500) to get 1 sec. */
#define CFG_HZ 1562500
/* valid baudrates */ #define CFG_BAUDRATE_TABLE { 9600, 19200, 38400, 57600, 115200 }
/*----------------------------------------------------------------------- * Stack sizes * * The stack sizes are set up in start.S using the settings below */
#define CONFIG_STACKSIZE (128*1024) /* regular stack */
#ifdef CONFIG_USE_IRQ
#define CONFIG_STACKSIZE_IRQ (4*1024) /* IRQ stack */
#define CONFIG_STACKSIZE_FIQ (4*1024) /* FIQ stack */
#endif
/*----------------------------------------------------------------------- * Physical Memory Map */ #define CONFIG_NR_DRAM_BANKS 1 /* we have 1 bank of DRAM */
#define PHYS_SDRAM_1 0x30000000 /* SDRAM Bank #1 */
#define PHYS_SDRAM_1_SIZE 0x04000000 /* 64 MB */
#define PHYS_FLASH_1 0x00000000 /* Flash Bank #1 */
#define CFG_FLASH_BASE PHYS_FLASH_1
//#define CONFIG_SURPORT_WINCE 1
/*----------------------------------------------------------------------- * FLASH and environment organization */
#if 0
#define CONFIG_AMD_LV400 1 /* uncomment this if you have a LV400 flash */
#endif
#define CONFIG_AMD_LV800 1 /* uncomment this if you have a LV800 flash */
#define CFG_MAX_FLASH_BANKS 1 /* max number of memory banks */
#ifdef CONFIG_AMD_LV800
#define PHYS_FLASH_SIZE 0x00100000 /* 1MB */
#define CFG_MAX_FLASH_SECT (19) /* max number of sectors on one chip */
#define CFG_ENV_ADDR (CFG_FLASH_BASE + 0x0F0000) /* addr of environment */
#endif
#ifdef CONFIG_AMD_LV400
#define PHYS_FLASH_SIZE 0x00080000 /* 512KB */
#define CFG_MAX_FLASH_SECT (11) /* max number of sectors on one chip */
#define CFG_ENV_ADDR (CFG_FLASH_BASE + 0x070000) /* addr of environment */
#endif
/* timeout values are in ticks */
#define CFG_FLASH_ERASE_TOUT (5*CFG_HZ) /* Timeout for Flash Erase */
#define CFG_FLASH_WRITE_TOUT (5*CFG_HZ) /* Timeout for Flash Write */
#define CFG_ENV_IS_IN_FLASH 1 /*enviroment is in the norflash*/
//#define CFG_ENV_IS_IN_NAND 1 /*enviroment is in the nandflash*/这里为修改的。。
改为：
//#define CFG_ENV_IS_IN_FLASH 1 /*enviroment is in the norflash*/
#define CFG_ENV_IS_IN_NAND 1
#define CFG_ENV_OFFSET 0x40000
#define CFG_ENV_SIZE 0x10000 /* Total Size of Environment Sector */
/*----------------------------------------------------------------------- * NAND flash settings */
#define CFG_NAND_BASE 0
#define CFG_MAX_NAND_DEVICE 1
#define NAND_MAX_CHIPS 1
#endif /* __CONFIG_H */ ~
修改完再生成u-boot.bin再烧入板中，在dnw下观察信息，竟然第一次的warning都没有，有点不可思议。
直接是下面的信息。
U-Boot 1.1.6 (Nov 29 2009 - 15:05:35)
DRAM: 64 MB
Flash: 1 MB
NAND: 64 MiB
In: serial
Out: serial
Err: serial
UPLLVal [M:28h,P:1h,S:2h]
MPLLVal [M:5ch,P:4h,S:0h]
CLKDIVN:3h
+---------------------------------------------+
| S3C2440A USB Downloader ver R0.03 2004 Jan |
+---------------------------------------------+
USB: IN_ENDPOINT:1 OUT_ENDPOINT:3
FORMAT: <ADDR(DATA):4>+<SIZE(n+10):4>+<DATA:n>+<CS:2>
NOTE: Power off/on or press the reset button for 1 sec
in order to get a valid USB device address.
Hit any key to stop autoboot: 0
Booting Linux ...
NAND read: device 0 offset 0x60000, size 0x200000
Reading data from 0x60000 -- 0ete.
Reading data from 0x65000 -- 1ete.
Reading data from 0x6a200 -- 2ete.
Reading data from 0x6f400 -- 3ete.
Reading data from 0x74600 -- 4ete.
Reading data from 0x79800 -- 5ete.
Reading data from 0x7ea00 -- 6ete.
Reading data from 0x83c00 -- 7ete.
Reading data from 0x88e00 -- 8ete.
Reading data from 0x8e000 -- 9ete.
Reading data from 0x93200 -- 10ete.
Reading data from 0x98400 -- 11ete.
Reading data from 0x9d600 -- 12ete.
Reading data from 0xa2800 -- 13ete.
Reading data from 0xa7a00 -- 14ete.
Reading data from 0xacc00 -- 15ete.
Reading data from 0xb1e00 -- 16ete.
Reading data from 0xb7000 -- 17ete.
Reading data from 0xbc200 -- 18ete.
Reading data from 0xc1400 -- 19ete.
Reading data from 0xc6600 -- 20ete.
Reading data from 0xcb800 -- 21ete.
Reading data from 0xd0a00 -- 22ete.
Reading data from 0xd5c00 -- 23ete.
Reading data from 0xdae00 -- 24ete.
Reading data from 0xdfe00 -- 25ete.
Reading data from 0xe5000 -- 26
Reading data from 0xea200 -- 27ete.
Reading data from 0xef400 -- 28ete.
Reading data from 0xf4600 -- 29ete.
Reading data from 0xf9800 -- 30ete.
Reading data from 0xfea00 -- 31
Reading data from 0x103c00 -- 32lete.
Reading data from 0x108e00 -- 33lete.
Reading data from 0x10e000 -- 34lete.
Reading data from 0x113200 -- 35lete.
Reading data from 0x118400 -- 36lete.
Reading data from 0x11d600 -- 37lete.
Reading data from 0x122800 -- 38lete.
Reading data from 0x127a00 -- 39lete.
Reading data from 0x12cc00 -- 40lete.
Reading data from 0x131e00 -- 41lete.
Reading data from 0x137000 -- 42lete.
Reading data from 0x13c200 -- 43lete.
Reading data from 0x141400 -- 44
Reading data from 0x146600 -- 45lete.
Reading data from 0x14b800 -- 46lete.
Reading data from 0x150a00 -- 47lete.
Reading data from 0x155c00 -- 48lete.
Reading data from 0x15ae00 -- 49
Reading data from 0x15fe00 -- 50lete.
Reading data from 0x165000 -- 51
Reading data from 0x16a200 -- 52lete.
Reading data from 0x16f400 -- 53lete.
Reading data from 0x174600 -- 54lete.
Reading data from 0x179800 -- 55lete.
Reading data from 0x17ea00 -- 56lete.
Reading data from 0x183c00 -- 57
Reading data from 0x188e00 -- 58lete.
Reading data from 0x18e000 -- 59lete.
Reading data from 0x193200 -- 60lete.
Reading data from 0x198400 -- 61
Reading data from 0x19d600 -- 62lete.
Reading data from 0x1a2800 -- 63lete.
Reading data from 0x1a7a00 -- 64lete.
Reading data from 0x1acc00 -- 65lete.
Reading data from 0x1b1e00 -- 66lete.
Reading data from 0x1b7000 -- 67lete.
Reading data from 0x1bc200 -- 68
Reading data from 0x1c1400 -- 69lete.
Reading data from 0x1c6600 -- 70lete.
Reading data from 0x1cb800 -- 71lete.
Reading data from 0x1d0a00 -- 72lete.
Reading data from 0x1d5c00 -- 73lete.
Reading data from 0x1dae00 -- 74lete.
Reading data from 0x1dfe00 -- 75
Reading data from 0x1e5000 -- 76lete.
Reading data from 0x1ea200 -- 77lete.
Reading data from 0x1ef400 -- 78lete.
Reading data from 0x1f4600 -- 79lete.
Reading data from 0x1f9800 -- 80lete.
Reading data from 0x1fea00 -- 81lete.
Reading data from 0x203c00 -- 82lete.
Reading data from 0x208e00 -- 83
Reading data from 0x20e000 -- 84lete.
Reading data from 0x213200 -- 85lete.
Reading data from 0x218400 -- 86lete.
Reading data from 0x21d600 -- 87
Reading data from 0x222800 -- 88lete.
Reading data from 0x227a00 -- 89lete.
Reading data from 0x22cc00 -- 90lete.
Reading data from 0x231e00 -- 91lete.
Reading data from 0x237000 -- 92lete.
Reading data from 0x23c200 -- 93lete.
Reading data from 0x241400 -- 94lete.
Reading data from 0x246600 -- 95lete.
Reading data from 0x24b800 -- 96
Reading data from 0x250a00 -- 97lete.
Reading data from 0x255c00 -- 98lete.
Reading data from 0x25ae00 -- 99lete.
Reading data from 0x25fe00 -- 1002097152 bytes read: OK
## Booting image at 30007fc0 ...
Bad Magic Number
##### 100ask Bootloader for OpenJTAG #####
[u] Download u-boot
[k] Download Linux kernel
[j] Download JFFS2 image
[y] Download YAFFS image
[d] Download to SDRAM & Run
[b] Boot the system
[f] Format the Nand Flash
[s] Set the boot parameters
Reboot u-boot
[q] Quit from menu
Enter your selection:
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