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>
diff --git a/tools/binman/missing-blob-help b/tools/binman/missing-blob-help
index 7cf1c34..f7bc80e 100644
--- a/tools/binman/missing-blob-help
+++ b/tools/binman/missing-blob-help
@@ -13,3 +13,7 @@
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