[Pdbg] [PATCH 01/13] libpdbg: Cache device tree pointer and offset for each node

[Amitay Isaacs]

Signed-off-by: Amitay Isaacs <amitay at ozlabs.org>
---
 libpdbg/device.c | 9 ++++++---
 libpdbg/target.h | 2 ++
 2 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/libpdbg/device.c b/libpdbg/device.c
index ad498dc..ac2351d 100644
--- a/libpdbg/device.c
+++ b/libpdbg/device.c
@@ -115,7 +115,7 @@ static struct pdbg_target *dt_pdbg_target_new(const void *fdt, int node_offset)
 	return target;
 }
 
-static struct pdbg_target *dt_new_node(const char *name, const void *fdt, int node_offset)
+static struct pdbg_target *dt_new_node(const char *name, void *fdt, int node_offset)
 {
 	struct pdbg_target *node = NULL;
 	size_t size = sizeof(*node);
@@ -131,6 +131,9 @@ static struct pdbg_target *dt_new_node(const char *name, const void *fdt, int no
 		abort();
 	}
 
+	node->fdt = fdt;
+	node->fdt_offset = fdt ? node_offset : -1;
+
 	node->dn_name = take_name(name);
 	node->parent = NULL;
 	list_head_init(&node->properties);
@@ -547,7 +550,7 @@ static enum pdbg_target_status str_to_status(const char *status)
 		assert(0);
 }
 
-static int dt_expand_node(struct pdbg_target *node, const void *fdt, int fdt_node)
+static int dt_expand_node(struct pdbg_target *node, void *fdt, int fdt_node)
 {
 	const struct fdt_property *prop;
 	int offset, nextoffset, err;
@@ -604,7 +607,7 @@ static int dt_expand_node(struct pdbg_target *node, const void *fdt, int fdt_nod
 	return nextoffset;
 }
 
-static void dt_expand(struct pdbg_target *root, const void *fdt)
+static void dt_expand(struct pdbg_target *root, void *fdt)
 {
 	PR_DEBUG("FDT: Parsing fdt @%p\n", fdt);
 
diff --git a/libpdbg/target.h b/libpdbg/target.h
index a8f777d..9e25a43 100644
--- a/libpdbg/target.h
+++ b/libpdbg/target.h
@@ -39,6 +39,8 @@ struct pdbg_target {
 	int (*probe)(struct pdbg_target *target);
 	void (*release)(struct pdbg_target *target);
 	uint64_t (*translate)(struct pdbg_target *target, uint64_t addr);
+	void *fdt;
+	int fdt_offset;
 	int index;
 	enum pdbg_target_status status;
 	const char *dn_name;
-- 
2.21.1