feat(allwinner): add SMCCC SOCID support
The Allwinner SID device holds a 16-bit SoC identifier, which we already
use in our code.
Export this number through the generic SMCCC SOCID interface, to allow
an architectural identification of an Allwinner SoC. This enables access
to this information from non-secure world, simplifies generic drivers
(ACPI comes to mind), and gives easy and precise access to the SoC ID
from userland in OSes like Linux.
Change-Id: I91753046b2ae5408ca7bc0b864fcd97d24c8267c
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
diff --git a/plat/allwinner/common/include/sunxi_def.h b/plat/allwinner/common/include/sunxi_def.h
index ec50887..c17ef95 100644
--- a/plat/allwinner/common/include/sunxi_def.h
+++ b/plat/allwinner/common/include/sunxi_def.h
@@ -20,4 +20,7 @@
#define SUNXI_SOC_H616 0x1823
#define SUNXI_SOC_R329 0x1851
+#define JEDEC_ALLWINNER_BKID 9U
+#define JEDEC_ALLWINNER_MFID 0x9eU
+
#endif /* SUNXI_DEF_H */