TQ2440 u-boot-2012.04.01移植三支持NOR Flash

继 u-boot-2012.04.01移植二支持NAND启动，继续修改代码支持NAND Flash、NOR Flash。最后直接用NOR Flash里的u-boot烧写自己移植的u-boot到NAND，方便电脑没有并口或手上没有openjtag,照样能移植u-boot，当然有openjtag更方便。
开发环境：

系统：ubuntu 10.04.4

单板：tq2440

NAND FLASH：K9F1216U0A 256MB

NOR Flash：EN29LV160AB 2MB

SDRAM：HY57V561620 x2 64MB

NET：DM9000AEP

编译器：arm-linux-gcc-4.3.2

搭建开发环境详见ubuntu 10.04.4开发环境配置。

目标：

1.支持NOR Flash启动，串口正常输出

2.支持NAND启动

3.支持DM9000网卡

4.添加u-boot菜单

5.裁剪u-boot及制作补丁

虽然单板现在支持NAND Flash、NOR Flash启动，但u-boot还不支持读写NAND Flash、NOR Flash，继续完善u-boot.修改u-boot支持NOR Flash

1.定义DEBUG,输出调试信息

drivers/mtd/cfi_flash.c:增加宏定义

#define _DEBUG 1//*add print message

#define DEBUG 1//*add print message

change@change:~$ cd Si/TQ2440/u-boot-2012.04.01/

change@change:~/Si/TQ2440/u-boot-2012.04.01$ make distclean

change@change:~/Si/TQ2440/u-boot-2012.04.01$ make TQ2440_config

Configuring for TQ2440 board...

change@change:~/Si/TQ2440/u-boot-2012.04.01$ make

编译成功，烧写到NAND启动串口输出

U-Boot 2012.04.01 (May 03 2013 - 10:25:00)

CPUID: 32440001

FCLK: 400 MHz

HCLK: 100 MHz

PCLK: 50 MHz

DRAM: 64 MiB

WARNING: Caches not enabled

Flash: fwc addr (null) cmd f0 00f0 16bit x 16 bit

fwc addr 0000aaaa cmd aa 00aa 16bit x 16 bit

fwc addr 00005554 cmd 55 0055 16bit x 16 bit

fwc addr 0000aaaa cmd 90 0090 16bit x 16 bit

fwc addr (null) cmd f0 00f0 16bit x 16 bit

JEDEC PROBE: ID f0 ea00 0

fwc addr (null) cmd ff 00ff 16bit x 16 bit

fwc addr (null) cmd 90 0090 16bit x 16 bit

fwc addr (null) cmd ff 00ff 16bit x 16 bit

JEDEC PROBE: ID 90 ea00 0

0 KB

*** Warning - bad CRC, using default environment

In: serial

Out: serial

Err: serial

Net: no support

TQ2440 #

上面是NOR Flash发出的各种命令，识别出JEDEC PROBE: ID f0 ea00 0

2.修改代码

change@change:~/Si/TQ2440/u-boot-2012.04.01$ grep "JEDEC PROBE" * -nR

drivers/mtd/cfi_flash.c:1699: debug("JEDEC PROBE: ID %x %x %x\n",

Binary file drivers/mtd/libmtd.o matches

Binary file drivers/mtd/cfi_flash.o matches

Binary file u-boot matches

Binary file u-boot.bin matches

change@change:~/Si/TQ2440/u-boot-2012.04.01$

进入drivers/mtd/cfi_flash.c:1699，看到打印ID后会跟jedec_flash_mach匹配，找到数组jedec_table[],去找与之匹配的id f0 ea00 0，找不到就增加该设备ID

结合NOR Flash手册修改代码drivers/mtd/jedec_flash.c370：

{

.mfr_id
= 0xf0,//nanufaction id

.dev_id
= 0xea00,//device id

.name = "TQ2440 NOR",

.uaddr
= {/*Nor flash */

[1] = MTD_UADDR_0x0555_0x02AA /* x16 */

},

.DevSize
= SIZE_2MiB,

.CmdSet
= P_ID_AMD_STD,

.NumEraseRegions= 4,

.regions
= {

ERASEINFO(0x4000, 1),

ERASEINFO(0x2000, 2),

ERASEINFO(0x8000, 1),

ERASEINFO(0x10000, 31),

}

},

change@change:~/Si/TQ2440/u-boot-2012.04.01$ make distclean

change@change:~/Si/TQ2440/u-boot-2012.04.01$ make TQ2440_config

Configuring for TQ2440 board...

change@change:~/Si/TQ2440/u-boot-2012.04.01$ make

烧写测试，NAND启动串口输出

U-Boot 2012.04.01 (May 03 2013 - 11:21:29)

CPUID: 32440001

FCLK: 400 MHz

HCLK: 100 MHz

PCLK: 50 MHz

DRAM: 64 MiB

WARNING: Caches not enabled

Flash: fwc addr (null) cmd f0 00f0 16bit x 16 bit

fwc addr 0000aaaa cmd aa 00aa 16bit x 16 bit

fwc addr 00005554 cmd 55 0055 16bit x 16 bit

fwc addr 0000aaaa cmd 90 0090 16bit x 16 bit

fwc addr (null) cmd f0 00f0 16bit x 16 bit

JEDEC PROBE: ID f0 ea00 0

ERROR: too many flash sectors

1 MiB

*** Warning - bad CRC, using default environment

In: serial

Out: serial

Err: serial

Net: no support

TQ2440 #

change@change:~/Si/TQ2440/u-boot-2012.04.01$ grep "too many flash sectors" * -nR

drivers/mtd/cfi_flash.c:2020: printf("ERROR: too many flash sectors\n");

Binary file drivers/mtd/libmtd.o matches

drivers/mtd/jedec_flash.c:444: printf("ERROR: too many flash sectors\n");

Binary file drivers/mtd/jedec_flash.o matches

Binary file drivers/mtd/cfi_flash.o matches

Binary file u-boot matches

Binary file u-boot.bin matches

change@change:~/Si/TQ2440/u-boot-2012.04.01$

修改include/configs/TQ2440.h191:

//#define CONFIG_SYS_MAX_FLASH_SECT (19)

#define CONFIG_SYS_MAX_FLASH_SECT (128)

change@change:~/Si/TQ2440/u-boot-2012.04.01$ make distclean

change@change:~/Si/TQ2440/u-boot-2012.04.01$ make TQ2440_config

Configuring for TQ2440 board...

change@change:~/Si/TQ2440/u-boot-2012.04.01$ make

烧写测试，NAND启动串口输出

U-Boot 2012.04.01 (May 03 2013 - 11:33:35)

CPUID: 32440001

FCLK: 400 MHz

HCLK: 100 MHz

PCLK: 50 MHz

DRAM: 64 MiB

WARNING: Caches not enabled

Flash: 2 MiB

*** Warning - bad CRC, using default environment

In: serial

Out: serial

Err: serial

Net: no support

TQ2440 # flinfo

Bank # 1: TQ2440 NOR Flash flash (16 x 16) Size: 2 MB in 35 Sectors

AMD Legacy command set, Manufacturer ID: 0xF0, Device ID: 0xEA00

Erase timeout: 30000 ms, write timeout: 100 ms

Sector Start Addresses:

00000000 RO 00004000 RO 00006000 RO 00008000 RO 00010000 RO

00020000 RO 00030000 RO 00040000 RO 00050000 RO 00060000

00070000 RO 00080000 00090000 000A0000 000B0000

000C0000 000D0000 000E0000 000F0000 00100000

00110000 00120000 00130000 00140000 00150000

00160000 00170000 00180000 00190000 001A0000

001B0000 001C0000 001D0000 001E0000 001F0000

TQ2440 #

基本正常，可以看到单板支持NOR Flash