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add fdt fixes patch

This commit is contained in:
Peter Robinson 2017-10-17 13:10:24 +01:00
parent 405df49197
commit c09f014d7f
1 changed files with 159 additions and 0 deletions
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@ -0,0 +1,159 @@
From 03569f3ef44fd1208a68030c1740d7347bcf3fa3 Mon Sep 17 00:00:00 2001
From: Rob Clark <robdclark@gmail.com>
Date: Fri, 23 Jun 2017 15:36:33 -0400
Subject: [PATCH 03/23] dm: core: also parse chosen node
This is the node that would contain, for example, the framebuffer setup
by an earlier stage.
Signed-off-by: Rob Clark <robdclark@gmail.com>
---
drivers/core/root.c | 22 +++++++++++++++++++++-
1 file changed, 21 insertions(+), 1 deletion(-)
diff --git a/drivers/core/root.c b/drivers/core/root.c
index d691d6ff94..5e6b2da248 100644
--- a/drivers/core/root.c
+++ b/drivers/core/root.c
@@ -266,6 +266,26 @@ static int dm_scan_fdt_node(struct udevice *parent, const void *blob,
for (offset = fdt_first_subnode(blob, offset);
offset > 0;
offset = fdt_next_subnode(blob, offset)) {
+ ofnode node = offset_to_ofnode(offset);
+
+ /* "chosen" node isn't a device itself but may contain some: */
+ if (strcmp(ofnode_get_name(node), "chosen") == 0) {
+ dm_dbg("parsing subnodes of \"chosen\"\n");
+
+ for (node = ofnode_first_subnode(node);
+ ofnode_valid(node);
+ node = ofnode_next_subnode(node)) {
+ dm_dbg("subnode: %s\n", ofnode_get_name(node));
+ err = lists_bind_fdt(parent, node, NULL);
+ if (err && !ret) {
+ ret = err;
+ dm_dbg("%s: ret=%d\n", ofnode_get_name(node), ret);
+ }
+ }
+
+ continue;
+ }
+
if (pre_reloc_only &&
!dm_fdt_pre_reloc(blob, offset))
continue;
@@ -273,7 +293,7 @@ static int dm_scan_fdt_node(struct udevice *parent, const void *blob,
pr_debug(" - ignoring disabled device\n");
continue;
}
- err = lists_bind_fdt(parent, offset_to_ofnode(offset), NULL);
+ err = lists_bind_fdt(parent, node, NULL);
if (err && !ret) {
ret = err;
debug("%s: ret=%d\n", fdt_get_name(blob, offset, NULL),
--
2.13.3
From d031c039a18b3a76a4ef16fb4ff8581a79f42fe3 Mon Sep 17 00:00:00 2001
From: Rob Clark <robdclark@gmail.com>
Date: Thu, 3 Aug 2017 09:52:14 -0400
Subject: [PATCH 06/23] fdtdec: allow board to provide fdt for
CONFIG_OF_SEPARATE
Similar to CONFIG_OF_BOARD, but in this case the fdt is still built by
u-boot build. This allows the board to patch the fdt, etc.
In the specific case of dragonboard 410c, we pass the u-boot generated
fdt to the previous stage of bootloader (by embedding it in the
u-boot.img that is loaded by lk/aboot), which patches the fdt and passes
it back to u-boot.
Signed-off-by: Rob Clark <robdclark@gmail.com>
---
include/fdtdec.h | 3 ++-
lib/fdtdec.c | 45 ++++++++++++++++++++++++++-------------------
2 files changed, 28 insertions(+), 20 deletions(-)
diff --git a/include/fdtdec.h b/include/fdtdec.h
index 4a0947c626..b9acec735a 100644
--- a/include/fdtdec.h
+++ b/include/fdtdec.h
@@ -988,7 +988,8 @@ int fdtdec_setup(void);
/**
* Board-specific FDT initialization. Returns the address to a device tree blob.
- * Called when CONFIG_OF_BOARD is defined.
+ * Called when CONFIG_OF_BOARD is defined, or if CONFIG_OF_SEPARATE is defined
+ * and the board implements it.
*/
void *board_fdt_blob_setup(void);
diff --git a/lib/fdtdec.c b/lib/fdtdec.c
index d2dbd0f122..07c458673c 100644
--- a/lib/fdtdec.c
+++ b/lib/fdtdec.c
@@ -1203,34 +1203,41 @@ int fdtdec_setup_memory_banksize(void)
}
#endif
-int fdtdec_setup(void)
+#ifdef CONFIG_OF_SEPARATE
+/*
+ * For CONFIG_OF_SEPARATE, the board may optionally implement this to
+ * provide and/or fixup the fdt.
+ */
+__weak void *board_fdt_blob_setup(void)
{
-#if CONFIG_IS_ENABLED(OF_CONTROL)
-# ifdef CONFIG_OF_EMBED
- /* Get a pointer to the FDT */
- gd->fdt_blob = __dtb_dt_begin;
-# elif defined CONFIG_OF_SEPARATE
-# ifdef CONFIG_SPL_BUILD
+ void *fdt_blob = NULL;
+#ifdef CONFIG_SPL_BUILD
/* FDT is at end of BSS unless it is in a different memory region */
if (IS_ENABLED(CONFIG_SPL_SEPARATE_BSS))
- gd->fdt_blob = (ulong *)&_image_binary_end;
+ fdt_blob = (ulong *)&_image_binary_end;
else
- gd->fdt_blob = (ulong *)&__bss_end;
+ fdt_blob = (ulong *)&__bss_end;
-# elif defined CONFIG_FIT_EMBED
- gd->fdt_blob = locate_dtb_in_fit(&_end);
+#elif defined CONFIG_FIT_EMBED
+ fdt_blob = locate_dtb_in_fit(&_end);
- if (gd->fdt_blob == NULL || gd->fdt_blob <= ((void *)&_end)) {
+ if (fdt_blob == NULL || fdt_blob <= ((void *)&_end))
puts("Failed to find proper dtb in embedded FIT Image\n");
- return -1;
- }
-
-# else
+#else
/* FDT is at end of image */
- gd->fdt_blob = (ulong *)&_end;
+ fdt_blob = (ulong *)&_end;
# endif
-# elif defined(CONFIG_OF_BOARD)
- /* Allow the board to override the fdt address. */
+ return fdt_blob;
+}
+#endif
+
+int fdtdec_setup(void)
+{
+#if CONFIG_IS_ENABLED(OF_CONTROL)
+# ifdef CONFIG_OF_EMBED
+ /* Get a pointer to the FDT */
+ gd->fdt_blob = __dtb_dt_begin;
+# elif defined(CONFIG_OF_SEPARATE) || defined(CONFIG_OF_BOARD)
gd->fdt_blob = board_fdt_blob_setup();
# elif defined(CONFIG_OF_HOSTFILE)
if (sandbox_read_fdt_from_file()) {
--
2.13.3