On Thu, Aug 20, 2020 at 08:55:30AM +0200, Teresa Remmet wrote: > Add support PHYTEC phyCORE-i.MX8MM SOM. > > Supported features: > - 2GB LPDDR4 RAM > - 1x 1Gbit Ethernet > - eMMC > - external SD > - debug UART3 > - watchdog > - i2c eeprom [snip] > +#define CONFIG_EXTRA_ENV_SETTINGS \ > + "image=Image\0" \ > + "console=ttymxc2,115200\0" \ > + "fdt_addr=0x44000000\0" \ > + "fdt_high=0xffffffffffffffff\0" \
Disabling fdt relocation is a bad idea. If U-Boot is moving it to outside of kernel visible memory you want to use bootm_size to limit the window to what will be visible to the kernel. [snip] > +/* Link Definitions */ > +#define CONFIG_LOADADDR 0x40480000 > +#define CONFIG_SYS_LOAD_ADDR CONFIG_LOADADDR This ends up with a fairly small gap between the kernel and the device tree and is a good way to end up with the kernel corrupting the device tree. https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/arm64/booting.rst is a good reference but I think in short I think you might want to move fdt_addr up to 0x48000000. Thanks! -- Tom
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