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sjoerd>
naobsd: which version are you using ?
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naobsd>
sjoerd: up-to-date mainline
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naobsd>
sjoerd: I commented out configure_emmc() as same as rock2, then I could get smaller(valid) spl.bin
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sjoerd>
hmm, guess master grew again
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naobsd>
sjoerd: can I try your "load u-boot by mask rom" for rk3288?
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sjoerd>
you can try :)
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naobsd>
well, is there any code/branch for it?
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naobsd>
or you just try current u-boot binary with stock spl(ddr init blob)?
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naobsd>
I see, thanks
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sjoerd>
biggest blocker i have is that linux will fail to boot properly with it :/
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naobsd>
oh interesting
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naobsd>
external USB ports are working on u-boot on rock2 by just enabling EHCI and some common USB options
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naobsd>
host power need to be turned on e.g. gpio toggle A14
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naobsd>
usb keyboard support can be added easily?
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naobsd>
in dts, there is no relation between ehci/usbphy and gpio0_14
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naobsd>
and generic-ehci handles only clk...
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naobsd>
so rk specific ehci driver is required to handle power/phy/etc...
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sjoerd>
naobsd: it's done as a trick in the dts
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sjoerd>
there is a rough note on my backlog to add a proper thing for it
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sjg1>
sjoerd: It would be great if we could figure out how to use the boot ROM to load from MMC (without it then jumping to the loaded image)
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naobsd>
sjg1: I guess save_boot_params/back_to_bootrom works
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sjg1>
But then we cannot tell it what to load, nor verify what it loaded
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naobsd>
maskrom refers header(64th sector on emmc/sd, idb sector 0) to get offset to read sram/dram code
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naobsd>
For evb_rk3036 board:
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naobsd>
./evb-rk3036/tools/mkimage -n rk3036 -T rksd -d evb-rk3036/spl/u-boot-spl.bin out && \
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naobsd>
cat evb-rk3036/u-boot-dtb.bin >> out && \
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naobsd>
sudo dd if=out of=/dev/sdc seek=64
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naobsd>
this should work
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naobsd>
u-boot(-dtb).bin should be loaded at beginning of physical dram space
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naobsd>
"-n rk3036" will not good for rk3288 spl
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naobsd>
I just said put u-boot.bin just after spl.bin will work
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sjoerd>
sjg1: Yeah having more controlover the maskrom would be nice
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sjg1>
naobsd: But it doesn't just read from MMC. It also jumps to the code!
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sjg1>
sjoerd: Hoping we can figure something out here with Rockchip's help
<
sjoerd>
sjg1: but atm i'd be happy if someone would figure out why why linux doesn't get timer interrupts letting maskrom load u-boot..
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sjoerd>
sjg1: lets hope :)
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bashintosh>
hi folks, can I boot ubuntu-core from a working initramfs (kernel 4.0.0-rc1) on RK3288 or I must use miniroot?