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+What:           /sys/devices/*/<our-device>/eeprom
+Date:           August 2013
+Contact:        Oliver Schinagl <oliver@schinagl.nl>
+Description:    read-only access to the SID (Security-ID) on current
+                A-series SoC's from Allwinner. Currently supports A10, A10s, A13
+                and A20 CPU's. The earlier A1x series of SoCs exports 16 bytes,
+                whereas the newer A20 SoC exposes 512 bytes split into sections.
+                Besides the 16 bytes of SID, there's also an SJTAG area,
+                HDMI-HDCP key and some custom keys. Below a quick overview, for
+                details see the user manual:
+                0x000  128 bit root-key (sun[457]i)
+                0x010  128 bit boot-key (sun7i)
+                0x020   64 bit security-jtag-key (sun7i)
+                0x028   16 bit key configuration (sun7i)
+                0x02b   16 bit custom-vendor-key (sun7i)
+                0x02c  320 bit low general key (sun7i)
+                0x040   32 bit read-control access (sun7i)
+                0x064  224 bit low general key (sun7i)
+                0x080 2304 bit HDCP-key (sun7i)
+                0x1a0  768 bit high general key (sun7i)
+Users:          any user space application which wants to read the SID on
+                Allwinner's A-series of CPU's.