u-boot/tools/binman/missing-blob-help
Samuel Holland e72a6be4fc sunxi: binman: Add support for including SCP firmware
Allwinner sun50i SoCs contain an OpenRISC 1000 CPU that functions as a
System Control Processor, or SCP. ARM Trusted Firmware (ATF)
communicates with the SCP over SCPI to implement the PSCI system
suspend, shutdown and reset functionality. Currently, SCP firmware is
optional; the system will boot and run without it, but system suspend
will be unavailable.

Since all communication with the SCP is mediated by ATF, the only thing
U-Boot needs to do is load the firmware into SRAM. The SCP firmware
occupies the last 16KiB of SRAM A2, immediately following ATF.

Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2020-10-22 11:43:43 +05:30

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# This file contains help messages for missing external blobs. Each message has
# a tag (MUST be just lower-case text, digits and hyphens) starting in column 1,
# followed by a colon (:) to indicate its start. The message can include any
# number of lines, including blank lines.
#
# When looking for a tag, Binman uses the value of 'missing-msg' for the entry,
# the entry name or the entry type, in that order
atf-bl31:
See the documentation for your board. You may need to build ARM Trusted
Firmware and build with BL31=/path/to/bl31.bin
atf-bl31-sunxi:
Please read the section on ARM Trusted Firmware (ATF) in
board/sunxi/README.sunxi64
scp-sunxi:
SCP firmware is required for system suspend, but is otherwise optional.
Please read the section on SCP firmware in board/sunxi/README.sunxi64