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<mkorpershoek>
Tartarus: I just answered on the original email, but you can sign me up for helping with moderating the mailing list queue.
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<catcream>
hey, can I somehow embed a fit (.itb) image with kernel, dtb and initramfs into u-boot? It'd be nice to just have rootfs and nothing else on sd card
<urja>
I mean... maybe somehow, but to get the result you want, i dont see that as necessary
<urja>
like for most boot methods (SPI NOR, or a NAND flash) you can partition that media and load the kernel from there, but now i'm thinking maybe it'd be of use for like mask-rom USB stuff?
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<catcream>
Thanks! Falcon seems interesting
<catcream>
otherwise I'll just format the spi nor yea
<marex>
catcream: why not just write the fitImage somewhere at page aligned location in SPI NOR past the bootloader ?
<marex>
you can update parts of the SPI NOR, all you have to make sure is, that the start of the update is at erase block aligned address (you can do without it, but you risk corrupting the bootloader)
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<catcream>
marex: oh true, so just append itb to u-boot-rockchip-spi.bin and making sure it's aligned. Then just load it to $loadaddr in memory and boot with bootm?
<catcream>
is there some config I can set to do it "cleanly" or should I make some manual bootcmd?
<catcream>
spi chip datasheet says: Uniform Sector/Block Erase (4K/32K/64K-Byte). Should I align to 64K?
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<marex>
catcream: re cleanly, this is custom boot command, so no, script it
<marex>
sszy: re sector size, it could be the chip supports 4k erase blocks, but if you align it to 64k, then you would be sure even software which does not have CONFIG_MTD_SPI_NOR_USE_4K_SECTORS=y set would work
<marex>
(that's a linux config option)
<marex>
and I suspect internally, the flash really does have 4k sectors and the state machine in the device does read-modify-write
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<urja>
I mean yeah, the performance (of some random chip I remember, but seemed common) seems to hint to them having 4k sectors but ability to erase 32k in parallel (so, same time to erase 4k as 32k), but yeah 64k alignment is pretty fool-proof
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