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fdtdec: optionally add property no-map to created reserved memory node

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Add boolean input argument @no_map to helper function
fdtdec_add_reserved_memory() to add or not "no-map" property
for an added reserved memory node.

Property no-map is used by the Linux kernel to not not map memory
in its static memory mapping. It is needed for example for the|
consistency of system non-cached memory and to prevent speculative
accesses to some firewalled memory.

No functional change. A later change will update to OPTEE library to
add no-map property to OP-TEE reserved memory nodes.

Signed-off-by: Etienne Carriere <etienne.carriere@st.com>
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Etienne Carriere
2020-09-10 10:49:59 +02:00
committed by Simon Glass
parent 68de0679c9
commit ccaa5747bd
5 changed files with 16 additions and 9 deletions
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2
lib/optee/optee.c
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@@ -192,7 +192,7 @@ int optee_copy_fdt_nodes(const void *old_blob, void *new_blob)
ret = fdtdec_add_reserved_memory(new_blob,
nodename,
&carveout,
NULL);
NULL, false);
free(oldname);
if (ret < 0)