On Thu, Jun 1, 2017 at 11:07 AM Madhu K <madhu.sk89@xxxxxxxxx> wrote:
Hi All,I have a doubt, how kernel command line parameters are passed to kernel space. Before device tree, we used to pass command line parameters using ATAGS. But after device tree we are not using ATAGS. How we are passing command line parameters to kernel space?
If you are using uboot, please consult uEnv.txt docs.
_______________________________________________Thanks & regards,Madhu
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kernel_file=zImage
fdtfile=am335x-boneblack.dtb
loadzimage=load mmc ${mmcdev}:${mmcpart} ${loadaddr} ${kernel_file}
loadfdt=load mmc ${mmcdev}:${mmcpart} ${fdtaddr} ${fdtfile}
console=ttyO0,115200n8
mmcroot=/dev/mmcblk0p2 ro
mmcrootfstype=ext4 rootwait
mmcargs=setenv bootargs console=${console} root=${mmcroot} rootfstype=${mmcrootfstype} ${optargs}
uenvcmd=run loadzimage; run loadfdt; run mmcargs; bootz ${loadaddr} - ${fdtaddr}
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