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        EEPW首頁 > 嵌入式系統(tǒng) > 設(shè)計應(yīng)用 > 嵌入式Linux開發(fā)環(huán)境的搭建之:U-Boot移植

        嵌入式Linux開發(fā)環(huán)境的搭建之:U-Boot移植

        作者: 時間:2013-09-13 來源:網(wǎng)絡(luò) 收藏

        本文引用地址:http://www.antipu.com.cn/article/257139.htm

        (9)提供nandflash相關(guān)宏定義(include/configs/fs2410.h),具體參考源碼。

        (10)加入NandFlash設(shè)備(include/linux/mtd/nand_ids.h)

        staticstructnand_flash_devnand_flash_ids[]=

        {

        ......

        {SamsungKM29N16000,NAND_MFR_SAMSUNG,0x64,21,1,2,0x1000,0},

        {SamsungK9F1208U0M,NAND_MFR_SAMSUNG,0x76,26,0,3,0x4000,0},

        {Samsungunknown4Mb,NAND_MFR_SAMSUNG,0x6b,22,0,2,0x2000,0},

        ......

        {NULL,}

        };

        (11)設(shè)置NandFlash環(huán)境(common/env_nand.c)

        intnand_legacy_rw(structnand_chip*nand,intcmd,

        size_tstart,size_tlen,

        size_t*retlen,u_char*buf);

        externstructnand_chipnand_dev_desc[CFG_MAX_NAND_DEVICE];

        externintnand_legacy_erase(structnand_chip*nand,

        size_tofs,size_tlen,intclean);

        /*infoforNANDchips,definedindrivers/nand/nand.c*/

        externnand_info_tnand_info[CFG_MAX_NAND_DEVICE];

        ......

        #else/*!CFG_ENV_OFFSET_REDUND*/

        intsaveenv(void)

        {

        ulongtotal;

        intret=0;

        puts(ErasingNand...);

        if(nand_legacy_erase(nand_dev_desc+0,

        CFG_ENV_OFFSET,CFG_ENV_SIZE,0))

        {

        return1;

        }

        puts(WritingtoNand...);

        total=CFG_ENV_SIZE;

        ret=nand_legacy_rw(nand_dev_desc+0,0x00|0x02,CFG_ENV_OFFSET,

        CFG_ENV_SIZE,total,(u_char*)env_ptr);

        if(ret||total!=CFG_ENV_SIZE)

        {

        return1;

        }

        puts(donen);

        returnret;

        ......

        #else/*!CFG_ENV_OFFSET_REDUND*/

        voidenv_relocate_spec(void)

        {

        #if!defined(ENV_IS_EMBEDDED)

        ulongtotal;

        intret;

        total=CFG_ENV_SIZE;

        ret=nand_legacy_rw(nand_dev_desc+0,0x01|0x02,CFG_ENV_OFFSET,

        CFG_ENV_SIZE,total,(u_char*)env_ptr);

        c語言相關(guān)文章:c語言教程


        linux相關(guān)文章:linux教程



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