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| author | Etienne Carriere <etienne.carriere@st.com> | 2020-09-10 11:49:59 +0300 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2020-09-22 21:54:13 +0300 |
| commit | ccaa5747bdeae4261199dd7e80771e4de1c550ca (patch) | |
| tree | ab94e7a90a9402304aa0c5d0377992e74186ce4b /include/fdtdec.h | |
| parent | 68de0679c940276b97c31b809168052f9d905505 (diff) | |
| download | u-boot-ccaa5747bdeae4261199dd7e80771e4de1c550ca.tar.xz | |
fdtdec: optionally add property no-map to created reserved memory node
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>
Diffstat (limited to 'include/fdtdec.h')
| -rw-r--r-- | include/fdtdec.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/include/fdtdec.h b/include/fdtdec.h index 152eb07b9e..62d1660973 100644 --- a/include/fdtdec.h +++ b/include/fdtdec.h @@ -1029,7 +1029,7 @@ static inline int fdtdec_set_phandle(void *blob, int node, uint32_t phandle) * }; * uint32_t phandle; * - * fdtdec_add_reserved_memory(fdt, "framebuffer", &fb, &phandle); + * fdtdec_add_reserved_memory(fdt, "framebuffer", &fb, &phandle, false); * * This results in the following subnode being added to the top-level * /reserved-memory node: @@ -1056,11 +1056,12 @@ static inline int fdtdec_set_phandle(void *blob, int node, uint32_t phandle) * @param carveout information about the carveout region * @param phandlep return location for the phandle of the carveout region * can be NULL if no phandle should be added + * @param no_map add "no-map" property if true * @return 0 on success or a negative error code on failure */ int fdtdec_add_reserved_memory(void *blob, const char *basename, const struct fdt_memory *carveout, - uint32_t *phandlep); + uint32_t *phandlep, bool no_map); /** * fdtdec_get_carveout() - reads a carveout from an FDT |