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authorPatrick Delaunay2020-02-18 15:43:46 +0100
committerSimon Glass2020-04-16 08:07:57 -0600
commit0544ecbfe92e909dd8ac6795d4399a65d6727d9b (patch)
treed837720790d5c05e62b57966a5576c0f543c6987 /drivers/core
parent67817b3b7a885b86b02b222675e0e29b1a2f25bf (diff)
dm: core: Move "/chosen" and "/firmware" node scan
Use the new function dm_scan_fdt_ofnode_path() to scan all the nodes which aren't devices themselves but may contain some: - "/chosen" - "/clocks" - "/firmware" The patch removes the strcmp call in recursive function dm_scan_fdt_live() and also corrects a conflict with the 2 applied patches in the commit 1712ca21924b ("dm: core: Scan /firmware node by default") and in the commit 747558d01457 ("dm: fdt: scan for devices under /firmware too"): the subnodes of "/firmware" (optee for example) are bound 2 times. For example the dm tree command result on STM32MP1 is: STM32MP> dm tree Class Index Probed Driver Name ----------------------------------------------------------- root 0 [ + ] root_driver root_driver firmware 0 [ ] psci |-- psci sysreset 0 [ ] psci-sysreset | `-- psci-sysreset simple_bus 0 [ + ] generic_simple_bus |-- soc ... tee 0 [ + ] optee |-- optee ... tee 1 [ ] optee `-- optee Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com> Tested-by: Michal Simek <michal.simek@xilinx.com> Reviewed-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'drivers/core')
-rw-r--r--drivers/core/root.c52
1 files changed, 17 insertions, 35 deletions
diff --git a/drivers/core/root.c b/drivers/core/root.c
index e85643819e7..14df16c280d 100644
--- a/drivers/core/root.c
+++ b/drivers/core/root.c
@@ -203,15 +203,6 @@ static int dm_scan_fdt_live(struct udevice *parent,
int ret = 0, err;
for (np = node_parent->child; np; np = np->sibling) {
- /* "chosen" node isn't a device itself but may contain some: */
- if (!strcmp(np->name, "chosen")) {
- pr_debug("parsing subnodes of \"chosen\"\n");
-
- err = dm_scan_fdt_live(parent, np, pre_reloc_only);
- if (err && !ret)
- ret = err;
- continue;
- }
if (!of_device_is_available(np)) {
pr_debug(" - ignoring disabled device\n");
@@ -256,21 +247,6 @@ static int dm_scan_fdt_node(struct udevice *parent, const void *blob,
offset = fdt_next_subnode(blob, offset)) {
const char *node_name = fdt_get_name(blob, offset, NULL);
- /*
- * The "chosen" and "firmware" nodes aren't devices
- * themselves but may contain some:
- */
- if (!strcmp(node_name, "chosen") ||
- !strcmp(node_name, "firmware")) {
- pr_debug("parsing subnodes of \"%s\"\n", node_name);
-
- err = dm_scan_fdt_node(parent, blob, offset,
- pre_reloc_only);
- if (err && !ret)
- ret = err;
- continue;
- }
-
if (!fdtdec_get_is_enabled(blob, offset)) {
pr_debug(" - ignoring disabled device\n");
continue;
@@ -315,7 +291,8 @@ int dm_scan_fdt(const void *blob, bool pre_reloc_only)
return dm_scan_fdt_node(gd->dm_root, blob, 0, pre_reloc_only);
}
-static int dm_scan_fdt_ofnode_path(const char *path, bool pre_reloc_only)
+static int dm_scan_fdt_ofnode_path(const void *blob, const char *path,
+ bool pre_reloc_only)
{
ofnode node;
@@ -327,13 +304,18 @@ static int dm_scan_fdt_ofnode_path(const char *path, bool pre_reloc_only)
if (of_live_active())
return dm_scan_fdt_live(gd->dm_root, node.np, pre_reloc_only);
#endif
- return dm_scan_fdt_node(gd->dm_root, gd->fdt_blob, node.of_offset,
+ return dm_scan_fdt_node(gd->dm_root, blob, node.of_offset,
pre_reloc_only);
}
int dm_extended_scan_fdt(const void *blob, bool pre_reloc_only)
{
- int ret;
+ int ret, i;
+ const char * const nodes[] = {
+ "/chosen",
+ "/clocks",
+ "/firmware"
+ };
ret = dm_scan_fdt(blob, pre_reloc_only);
if (ret) {
@@ -341,16 +323,16 @@ int dm_extended_scan_fdt(const void *blob, bool pre_reloc_only)
return ret;
}
- ret = dm_scan_fdt_ofnode_path("/clocks", pre_reloc_only);
- if (ret) {
- debug("scan for /clocks failed: %d\n", ret);
- return ret;
+ /* Some nodes aren't devices themselves but may contain some */
+ for (i = 0; i < ARRAY_SIZE(nodes); i++) {
+ ret = dm_scan_fdt_ofnode_path(blob, nodes[i], pre_reloc_only);
+ if (ret) {
+ debug("dm_scan_fdt() scan for %s failed: %d\n",
+ nodes[i], ret);
+ return ret;
+ }
}
- ret = dm_scan_fdt_ofnode_path("/firmware", pre_reloc_only);
- if (ret)
- debug("scan for /firmware failed: %d\n", ret);
-
return ret;
}
#endif