fdtdec: Support reserved-memory flags
Reserved memory nodes can have additional flags. Support reading and
writing these flags to ensure that reserved memory nodes can be properly
parsed and emitted.
This converts support for the existing "no-map" flag to avoid extending
the argument list for fdtdec_add_reserved_memory() to excessive length.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
diff --git a/lib/fdtdec.c b/lib/fdtdec.c
index a0ecc72..ad090ea 100644
--- a/lib/fdtdec.c
+++ b/lib/fdtdec.c
@@ -1294,7 +1294,7 @@
int fdtdec_add_reserved_memory(void *blob, const char *basename,
const struct fdt_memory *carveout,
const char **compatibles, unsigned int count,
- uint32_t *phandlep, bool no_map)
+ uint32_t *phandlep, unsigned long flags)
{
fdt32_t cells[4] = {}, *ptr = cells;
uint32_t upper, lower, phandle;
@@ -1364,6 +1364,12 @@
if (node < 0)
return node;
+ if (flags & FDTDEC_RESERVED_MEMORY_NO_MAP) {
+ err = fdt_setprop(blob, node, "no-map", NULL, 0);
+ if (err < 0)
+ return err;
+ }
+
if (phandlep) {
err = fdt_generate_phandle(blob, &phandle);
if (err < 0)
@@ -1394,12 +1400,6 @@
if (err < 0)
return err;
- if (no_map) {
- err = fdt_setprop(blob, node, "no-map", NULL, 0);
- if (err < 0)
- return err;
- }
-
if (compatibles && count > 0) {
size_t length = 0, len = 0;
unsigned int i;
@@ -1432,7 +1432,8 @@
int fdtdec_get_carveout(const void *blob, const char *node,
const char *prop_name, unsigned int index,
struct fdt_memory *carveout, const char **name,
- const char ***compatiblesp, unsigned int *countp)
+ const char ***compatiblesp, unsigned int *countp,
+ unsigned long *flags)
{
const fdt32_t *prop;
uint32_t phandle;
@@ -1519,13 +1520,20 @@
carveout->end = carveout->start + size - 1;
+ if (flags) {
+ *flags = 0;
+
+ if (fdtdec_get_bool(blob, offset, "no-map"))
+ *flags |= FDTDEC_RESERVED_MEMORY_NO_MAP;
+ }
+
return 0;
}
int fdtdec_set_carveout(void *blob, const char *node, const char *prop_name,
unsigned int index, const struct fdt_memory *carveout,
const char *name, const char **compatibles,
- unsigned int count)
+ unsigned int count, unsigned long flags)
{
uint32_t phandle;
int err, offset, len;
@@ -1533,7 +1541,7 @@
void *prop;
err = fdtdec_add_reserved_memory(blob, name, carveout, compatibles,
- count, &phandle, false);
+ count, &phandle, flags);
if (err < 0) {
debug("failed to add reserved memory: %d\n", err);
return err;