[PATCH v2 02/14] cpu-uclass: relocate ops pointers for CONFIG_NEEDS_MANUAL_RELOC

Ovidiu Panait ovpanait at gmail.com
Tue May 31 20:14:23 CEST 2022


Relocate cpu_ops pointers when CONFIG_NEEDS_MANUAL_RELOC is enabled.

The (gd->flags & GD_FLG_RELOC) check was added to make sure the reloc_done
logic works for drivers that use DM_FLAG_PRE_RELOC.

Signed-off-by: Ovidiu Panait <ovpanait at gmail.com>
---

Changes in v2:
- New patch.

 drivers/cpu/cpu-uclass.c | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/drivers/cpu/cpu-uclass.c b/drivers/cpu/cpu-uclass.c
index a5cda6a62c..71e5900d70 100644
--- a/drivers/cpu/cpu-uclass.c
+++ b/drivers/cpu/cpu-uclass.c
@@ -14,6 +14,9 @@
 #include <dm/lists.h>
 #include <dm/root.h>
 #include <linux/err.h>
+#include <relocate.h>
+
+DECLARE_GLOBAL_DATA_PTR;
 
 int cpu_probe_all(void)
 {
@@ -136,9 +139,36 @@ static int uclass_cpu_init(struct uclass *uc)
 	return ret;
 }
 
+static int uclass_cpu_post_bind(struct udevice *dev)
+{
+	if (IS_ENABLED(CONFIG_NEEDS_MANUAL_RELOC) &&
+	    (gd->flags & GD_FLG_RELOC)) {
+		struct cpu_ops *ops = cpu_get_ops(dev);
+		static int reloc_done;
+
+		if (!reloc_done) {
+			if (ops->get_desc)
+				MANUAL_RELOC(ops->get_desc);
+			if (ops->get_info)
+				MANUAL_RELOC(ops->get_info);
+			if (ops->get_count)
+				MANUAL_RELOC(ops->get_count);
+			if (ops->get_vendor)
+				MANUAL_RELOC(ops->get_vendor);
+			if (ops->is_current)
+				MANUAL_RELOC(ops->is_current);
+
+			reloc_done++;
+		}
+	}
+
+	return 0;
+}
+
 UCLASS_DRIVER(cpu) = {
 	.id		= UCLASS_CPU,
 	.name		= "cpu",
 	.flags		= DM_UC_FLAG_SEQ_ALIAS,
 	.init		= uclass_cpu_init,
+	.post_bind	= uclass_cpu_post_bind,
 };
-- 
2.25.1



More information about the U-Boot mailing list