見1系統(tǒng)移植實驗了解u boot代碼結構及方法

u-boot1、ubuntu10.103FS_4412平臺（EXYNOS我們可以在下面這個上的和以前任一版本的$$tarxvfu-boot-$cdu-boot-$vim 把ifeqifeqPILEPILE?=arm-none-linux-CPUexynosu-bootCPUboard配置修改,$$cp-rfboard/samsung/origen/$mvboard/samsung/fs4412/origen.c$vimorigen.o為$cpinclude/configs/origen.h$vim#defineCONFIG_SYS_PROMPT"ORIGEN為#defineCONFIG_SYS_PROMPT"fs4412#defineCONFIG_IDENT_STRINGfor為#defineCONFIG_IDENT_STRINGfor Origenarmarmv7origenSamsungfs4412armarmv7fs4412samsung$make$make$make$u-boot.binu-bootarch/arm/cpu/armv7/start.S134#if#ifldrr0,=0x11000c40@GPK2_7led2ldrr1,[r0]bicr1,r1,#0xforrr1,r1,#0xstrr1,[r0]ldrr0,=0x11000c44movr1,#0xffstrr1,添加三星exynosu-boot,$cpsdfuse_qu-boot-2013.01- 注：sdfuse_q三星提供的加$cpCodeSign4SecureBootu-boot-2013.01- $vim sdfuse_q的編譯 $(OBJCOPY)${OBJCFLAGS}-Obinary$<@split@split-b14336u-boot.binbl2@+make-Csdfuse_q/@#cpu-boot.binu-boot-4212.bin@#cpu-boot.binu-boot-4412.bin@rm$cpbuild.shu-boot- od777u-boot-2013.01/$注：build.sh方式完成自動添加，u-boot_fs4412.binldrldr @useiRomstackin在beq #if#if1/*forclosewatchdog/*PS-Holdhighldrr0,cldrr1,orrr1,r1,#0x300strr1,[r0] ldrr1,=0x0strr1,/*ClearMASK_WDT_RESET_REQUESTldrr0,cldrr1,=0x00strr1,[r0]uart_asm_initr1,[r0,ldrr0, r1,r2,r1,[r0,r1,r2,r1,[r0,trustzone bl bl $ $vim structexynos4_gpio_part2*gpio2;#ifdef#ifdef#defineEXYNOS4412_SROMC_BASE#defineDM9000_Tacs(0x1)#defineDM9000_Tcos(0x1)#defineDM9000_Tacc(0x5)#defineDM9000_Tcoh(0x1)#defineDM9000_Tah(0xC)#defineDM9000_Tacp(0x9)#defineDM9000_PMCstructexynos_sromc{unsignedintbw;unsignedintbc[6];s5p_config_sromc()-selecttheproperSROMCBankandconfigurebandwidthcontrolandbankcontrol -srom_bw_conf-SMCBandwitdhregconfigurationsrom_bc_conf-SMCBankControlregconfigurationvoidexynos_config_sromc(u32srom_bank,u32srom_bw_conf,u32{unsignedintstructexynos_sromc*srom=(structexynos_sromc/*ConfigureSMC_BWregistertohandleproperSROMCbank*/tmp=srom->bw;tmp&=~(0xF<<(srom_bank*4));tmp|=srom_bw_conf;srom->bw=/*ConfigureSMC_BCregister*/srom->bc[srom_bank]=srom_bc_conf;}staticvoid{unsignedintunsignedcharsmc_bank_num=1;unsignedint unsignedint /*gpioconfiguration , + , +/*16Bitbuswidth , + + , + + , + +smc_bw_conf&=smc_bw_conf|=(1<<7)|(1<<6)|(1<<5)|(1<<4);smc_bc_conf=((DM9000_Tacs<<28)|(DM9000_Tcos<<|(DM9000_Tacc<<|(DM9000_Tcoh<<|(DM9000_Tah<<|(DM9000_Tacp<<|} gd->bd->bi_boot_paramsPHYS_SDRAM_10x100UL);#ifdef#ifdef#ifdef#ifdefCONFIG_CMD_NETintboard_eth_init(bd_t{intrc=#ifdefrc=dm9000_initialize(bis);return}2$vim #undef為#define#undef 為#define /*CONFIG_H#ifdefCONFIG_CMD_NET#defineCONFIG_DRIVER_DM9000#define #defineDM9000_IO#define#define1(CONFIG_DM9000_BASE+4)#define#define#define#define#define$ 192.168.9.120 1pinmux.o$vim 在#include #include#include#include在#ifdef u32u32sclk_mmc4;/*clocksourceforemmccontroller*/#defineREGMY(x)(*((volatileu32*)(x)))#defineCLK_SRC_FSYSREGMY(EXYNOS4_CLOCK_BASE+#defineCLK_DIV_FSYS3REGMY(EXYNOS4_CLOCK_BASE+int{u32tmp;u32clock;u32i;/*setup_hsmmc_clock/*MMC4clocksrc=SCLKMPLLtmp=CLK_SRC_FSYS&CLK_SRC_FSYS=tmp|;/*MMC4clockdivtmp=CLK_DIV_FSYS3&~(0x0000ff0f);clock=get_pll_clk(MPLL)/ for(i=0;i<=0xf;i++){if(sclk_mmc4<=160){CLK_DIV_FSYS3=tmp|}}emmcdbg("[mjdbg]sclk_mmc4:%dMHZ;mmc_ratio:%d\n",sclk_mmc4,i);sclk_mmc4*= MMC4EMMCGPIO*GPK0[0]GPK0[1]GPK0[2] );//SD4CLK/SD4CMDpull-);//cdnsettobe);//cdnpull-down);//cdnoutput0toshutdownthe );//cdnsettobe );//cdnoutput , (0x00003FF0, (0x00002AAA,#ifdef , (0x00003FC0,#ifdefUSE_MMC4}intboard_mmc_init(bd_t*bis)intintboard_mmc_init(bd_t{inti,#ifdefCONFIG_EMMCerr=emmc_init();return}#ifdef#ifdef#includeintchk_bootdev(void)//mjforbootdevice{charrun_cmd[100];structmmc*mmc;intboot_dev=0;intcmp_off=0x10;ulong mmc=if(mmc=={printf("ThereisnoeMMCcard,BootingdeviceisSDcard\n");boot_dev=1;return}start_blk=(24*1024/MOVI_BLKSIZE);t=0x10;mand(run_cmd,sprintf(runcmd,"mmc0%lx%lx%lx",CFG_PHY_KERNEL_BAS mand(run_cmd,0);/*switchmmctonormalparitition*/sprintf(run_cmd,"emmcclose0");mand(run_cmd,return}}intboard_late_init{intboot_dev=0;charboot_cmd[100];boot_dev=chk_bootdev();{printf("\n\nCheckingBootMode...}return}2$$ cmd_movi.c$ cmd_mmc.c$cpcmd_mmc_fdisk.c$ 在 $$$cp$$cpmmc.h$cpmovi.h$cps5p_mshc.h$vim #defineCONFIG_EVT1 #defineCONFIG_EVT1 /*EVT1*/#ifdefCONFIG_EVT1#defineCONFIG_EMMC44_CH4//eMMC44_CH4(OMPIN[5:1]=#ifdefCONFIG_SDMMC_CH2#defineCONFIG_S3C_HSMMC#undefDEBUG_S3C_HSMMC#defineUSE_MMC2#ifdefCONFIG_EMMC44_CH4#defineCONFIG_S5P_MSHC#defineCONFIG_EMMC #define/*#defineCONFIG_EMMC_8Bit*/#defineCONFIG_EMMC_EMERGENCY/*#defineemmcdbg(fmt,args.)printf(fmt,##args)*///foremmc#defineemmcdbg(fmt,args.#endif/*end