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2022-10-31Rename CONFIG_SYS_TEXT_BASE to CONFIG_TEXT_BASESimon Glass
The current name is inconsistent with SPL which uses CONFIG_SPL_TEXT_BASE and this makes it imposible to use CONFIG_VAL(). Rename it to resolve this problem. Signed-off-by: Simon Glass <[email protected]>
2021-07-15x86: coreboot: Document the memory mapSimon Glass
Add information about memory usage when U-Boot is started from coreboot. This is useful when debugging. Also, since coreboot takes a chunk of memory in the middle of SDRAM for use by PCI devices, it can help avoid overwriting this with a loaded kernel by accident. Signed-off-by: Simon Glass <[email protected]> Reviewed-by: Bin Meng <[email protected]>
2020-05-04x86: Add a 64-bit 'coreboot64' buildSimon Glass
Coreboot is a first-stage bootloader mostly used on x86 devices as an alternative to UEFI. Coreboot runs in 32-bit mode. U-Boot currently supports booting from coreboot as a second-stage bootloader, also in 32-bit mode. However it is useful to be able to run U-Boot in 64-bit mode. To do this we can have a 32-bit SPL which switches over the CPU and jumps to a 64-bit U-Boot proper. Add a new 'coreboot64' board for running 64-bit U-Boot from coreboot. This uses binman to create an image with a 32-bit SPL and a 64-bit U-Boot. This allows running 64-bit EFI images on x86, for example, without needing a native U-Boot port for a board. Signed-off-by: Simon Glass <[email protected]> Reviewed-by: Bin Meng <[email protected]> Tested-by: Bin Meng <[email protected]>
2019-07-24doc: board: Add coreboot board docBin Meng
This extracts coreboot board specific information from README.x86, converts plain text documentation to reST format and adds it to Sphinx TOC tree. No essential content change. Signed-off-by: Bin Meng <[email protected]>