u-boot/doc/README.rockchip

17    - Firefly RK3288 board or something else with a supported RockChip SoC
107 To create a suitable image and write it to the board:
122 in SPL then we could in principle load U-Boot and boot to a prompt from USB
162 load a second-stage bootloader (ie. U-Boot) as soon as the control is returned
175 If you have an HDMI cable attached you should see a video console.
208 described above, but the image creation needs a bit more care.
210 The bootrom of rk3188 expects to find a small 1kb loader which returns
213 handled by a single image (built as the SPL stage) that tests whether
273 If you have a Dediprog em100pro connected then you can write the image with:
320 over USB OTG. This is a very simple format - just the string RK32 (as 4 bytes)
329 rksd.c produces an image consisting of 32KB of empty space, a header and
332 signature, a flag and the block offset and size of the SPL image.
334 The header occupies a single block but we pad it out to 4 blocks. The header
339 or 0x40 blocks. This is a severe and annoying limitation. There may be a way
343 The image produced is padded up to a block boundary (512 bytes). It should be
353 rkspi.c produces an image consisting of a header and u-boot-spl-dtb.bin. The
359 See above for instructions on how to write a SPI image.
371 Where possible driver model is used to provide a structure to the
373 overhead and in SPL with a 32KB size limit some shortcuts have been taken.
380 Rockchip use a unified GPT partition layout  in open source support.