Hi Samuel,
On Thu, 3 Sep 2020 at 00:08, Samuel Holland samuel@sholland.org wrote:
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 and shutdown 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.
Signed-off-by: Samuel Holland samuel@sholland.org
Changes since v1:
- None
board/sunxi/README.sunxi64 | 43 ++++++++++++++++++++++++++++------ board/sunxi/mksunxi_fit_atf.sh | 23 +++++++++++++++--- 2 files changed, 56 insertions(+), 10 deletions(-)
This needs to be done with binman. See u-boot-dm/next for the updated implementation.
Regards, Simon