bloblist: add API to check the register conventions
Add bloblist_check_reg_conv() to check whether the bloblist is compliant
to the register conventions defined in Firmware Handoff specification.
This API can be used for all Arm platforms.
Signed-off-by: Raymond Mao <raymond.mao@linaro.org>
diff --git a/include/bloblist.h b/include/bloblist.h
index 84fc943..f7e800f 100644
--- a/include/bloblist.h
+++ b/include/bloblist.h
@@ -78,6 +78,13 @@
BLOBLIST_VERSION = 1,
BLOBLIST_MAGIC = 0x4a0fb10b,
+ /*
+ * FIXME:
+ * Register convention version should be placed into a higher byte
+ * https://github.com/FirmwareHandoff/firmware_handoff/issues/32
+ */
+ BLOBLIST_REGCONV_VER = 1 << 24,
+
BLOBLIST_BLOB_ALIGN_LOG2 = 3,
BLOBLIST_BLOB_ALIGN = 1 << BLOBLIST_BLOB_ALIGN_LOG2,
@@ -461,4 +468,17 @@
}
#endif /* BLOBLIST */
+/**
+ * bloblist_check_reg_conv() - Check whether the bloblist is compliant to
+ * the register conventions according to the
+ * Firmware Handoff spec.
+ *
+ * @rfdt: Register that holds the FDT base address.
+ * @rzero: Register that must be zero.
+ * @rsig: Register that holds signature and register conventions version.
+ * Return: 0 if OK, -EIO if the bloblist is not compliant to the register
+ * conventions.
+ */
+int bloblist_check_reg_conv(ulong rfdt, ulong rzero, ulong rsig);
+
#endif /* __BLOBLIST_H */