xlat: Make function to calculate TCR PA bits public
This function can be useful to setup TCR_ELx by callers that don't use
the translation tables library to setup the system registers related
to them. By making it common, it can be reused whenever it is needed
without duplicating code.
Change-Id: Ibfada9e846d2a6cd113b1925ac911bb27327d375
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
diff --git a/include/lib/xlat_tables/aarch64/xlat_tables_aarch64.h b/include/lib/xlat_tables/aarch64/xlat_tables_aarch64.h
index 7381bc8..6021e40 100644
--- a/include/lib/xlat_tables/aarch64/xlat_tables_aarch64.h
+++ b/include/lib/xlat_tables/aarch64/xlat_tables_aarch64.h
@@ -16,6 +16,11 @@
#endif
/*
+ * Encode a Physical Address Space size for its use in TCR_ELx.
+ */
+unsigned long long tcr_physical_addr_size_bits(unsigned long long max_addr);
+
+/*
* In AArch64 state, the MMU may support 4 KB, 16 KB and 64 KB page
* granularity. For 4KB granularity, a level 0 table descriptor doesn't support
* block translation. For 16KB, the same thing happens to levels 0 and 1. For