about burning sd card image in lsdk2012

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about burning sd card image in lsdk2012

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niexuzhong
Contributor II

Hi:

 As we know, if we want to burn sd card in uboot, first we should use command line :

tftp a0000000 firmware_<machine>_uboot_sdboot.img

then we will use command

  mmc write a0000000 8 1f000 to burn it.

 So my question is why the start block is 8?, Is the first 8 block is for RCW binary and PBL? So I think that we had burned a U-boot image before if we use this command?

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ufedor
NXP TechSupport
NXP TechSupport

By design during eSDHC boot RCW is fetched from the address 0x1000 which corresponds to 8th 512-byte block.

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