tools/binman/README.entries

150 This file contains microcode for some devices in a special format. An
151 example filename is 'Microcode/C0_22211.BIN'.
360 Entry: u-boot-dtb-with-ucode: A U-Boot device tree file, with the microcode removed
368 contains the microcode. If the microcode is not being collated into one
369 place then the offset and size of the microcode is recorded by this entry,
371 entry deletes the microcode from the device tree (to save space) and makes
496 Entry: u-boot-spl-with-ucode-ptr: U-Boot SPL with embedded microcode pointer
499 This is used when SPL must set up the microcode for U-Boot.
542 Entry: u-boot-tpl-dtb-with-ucode: U-Boot TPL with embedded microcode pointer
545 This is used when TPL must set up the microcode for U-Boot.
552 Entry: u-boot-tpl-with-ucode-ptr: U-Boot TPL with embedded microcode pointer
560 Entry: u-boot-ucode: U-Boot microcode block
569 U-Boot on x86 needs a single block of microcode. This is collected from
570 the various microcode update nodes in the device tree. It is also unable
571 to read the microcode from the device tree on platforms that use FSP
573 microcode is supplied before there is any SRAM available to use (i.e.
575 requires the microcode!). To keep things simple, all x86 platforms handle
576 microcode the same way in U-Boot (even non-FSP platforms). This is that
578 size of the microcode. This is either passed to the FSP (for FSP
579 platforms), or used to set up the microcode (for non-FSP platforms).
581 the microcode into a single blob and accessible without SRAM.
583 There are two cases to handle. If there is only one microcode blob in
587 entry (u-boot-dtb-with-ucode) is updated to remove the microcode. This
588 last step ensures that that the microcode appears in one contiguous
592 Entry types that have a part to play in handling microcode:
596         It updates it with the address and size of the microcode so that
599         Contains u-boot.dtb. It stores the microcode in a
601         obtain the microcode if needed. If collation is performed, it
602         removes the microcode from the device tree.
604         This class. If collation is enabled it reads the microcode from
610 Entry: u-boot-with-ucode-ptr: U-Boot with embedded microcode pointer
615     - optional-ucode: boolean property to make microcode optional. If the
616         u-boot.bin image does not include microcode, no error will
621 microcode, to allow early x86 boot code to find it without doing anything