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Boot Linux via TFTP (using U-Boot)
==================================
Note: This boot flow requires a TFTP server.
Boot your system into U-Boot, using an alternative boot method (e.g. JTAG, SD).
Place the following images into the root of the TFTP server directory:
* core-image-minimal-<machine name>.cpio.gz.u-boot (RootFS)
* linux.bin.ub or uImage (Linux Kernel)
* <kernel binary>-<machine name>.dtb (DTB)
The serial console of the target board will display the U-Boot console.
Configure the 'ipaddr' and 'serverip' of the U-Boot environment.
U-Boot> set serverip <server ip>
U-Boot> set ipaddr <board ip>
Using the U-Boot console; load the Kernel, RootFS and the DTB into memory.
And then boot Linux using the 'bootm' command. (Note the load addresses will
be dependant on machine used)
For MicroBlaze (kc705-microblazeel):
U-Boot> tftpboot 0x85000000 linux.bin.ub
U-Boot> tftpboot 0x86000000 core-image-minimal-<machine name>.cpio.gz.u-boot
U-Boot> tftpboot 0x84000000 <machine name>.dtb
U-Boot> bootm 0x85000000 0x86000000 0x84000000
For Zynq:
U-Boot> tftpboot 0x2000000 uImage
U-Boot> tftpboot 0x3000000 core-image-minimal-<machine name>.cpio.gz.u-boot
U-Boot> tftpboot 0x2A00000 uImage-<machine name>.dtb
U-Boot> bootm 0x2000000 0x3000000 0x2A00000
U-Boot will prepare the Kernel for boot and then it will being to initialize.
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