dm: core: ofnode: Add ofnode_read_bootscript_address()
ofnode_read_bootscript_address() reads bootscript address from
/options/u-boot DT node. bootscr-address or bootscr-ram-offset properties
are read and values are filled. bootscr-address has higher priority than
bootscr-ram-offset and the only one should be described in DT.
Also add test to cover this new function.
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/23be3838502efef61803c90ef6e8b32bbd6ede41.1693465140.git.michal.simek@amd.com
diff --git a/arch/sandbox/dts/test.dts b/arch/sandbox/dts/test.dts
index e6a471e..d93c010 100644
--- a/arch/sandbox/dts/test.dts
+++ b/arch/sandbox/dts/test.dts
@@ -81,6 +81,13 @@
};
};
+ options {
+ u-boot {
+ compatible = "u-boot,config";
+ bootscr-ram-offset = /bits/ 64 <0x12345678>;
+ };
+ };
+
bootstd {
bootph-verify;
compatible = "u-boot,boot-std";
diff --git a/drivers/core/ofnode.c b/drivers/core/ofnode.c
index 8311282..5076054 100644
--- a/drivers/core/ofnode.c
+++ b/drivers/core/ofnode.c
@@ -1593,6 +1593,31 @@
return ofnode_read_string(node, prop_name);
}
+int ofnode_read_bootscript_address(u64 *bootscr_address, u64 *bootscr_offset)
+{
+ int ret;
+ ofnode uboot;
+
+ *bootscr_address = 0;
+ *bootscr_offset = 0;
+
+ uboot = ofnode_path("/options/u-boot");
+ if (!ofnode_valid(uboot)) {
+ printf("%s: Missing /u-boot node\n", __func__);
+ return -EINVAL;
+ }
+
+ ret = ofnode_read_u64(uboot, "bootscr-address", bootscr_address);
+ if (ret) {
+ ret = ofnode_read_u64(uboot, "bootscr-ram-offset",
+ bootscr_offset);
+ if (ret)
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
ofnode ofnode_get_phy_node(ofnode node)
{
/* DT node properties that reference a PHY node */
diff --git a/include/dm/ofnode.h b/include/dm/ofnode.h
index 0a85db3..c38596a 100644
--- a/include/dm/ofnode.h
+++ b/include/dm/ofnode.h
@@ -20,6 +20,7 @@
struct resource;
#include <dm/ofnode_decl.h>
+#include <linux/errno.h>
struct ofnode_phandle_args {
ofnode node;
@@ -1512,6 +1513,26 @@
*/
const char *ofnode_conf_read_str(const char *prop_name);
+/**
+ * ofnode_read_bootscript_address() - Read bootscr-address or bootscr-ram-offset
+ *
+ * @bootscr_address: pointer to 64bit address where bootscr-address property value
+ * is stored
+ * @bootscr_offset: pointer to 64bit offset address where bootscr-ram-offset
+ * property value is stored
+ *
+ * This reads a bootscr-address or bootscr-ram-offset property from
+ * the /options/u-boot/ node of the devicetree. bootscr-address holds the full
+ * address of the boot script file. bootscr-ram-offset holds the boot script
+ * file offset from the start of the ram base address. When bootscr-address is
+ * defined, bootscr-ram-offset property is ignored.
+ *
+ * This only works with the control FDT.
+ *
+ * Return: 0 if OK, -EINVAL if property is not found.
+ */
+int ofnode_read_bootscript_address(u64 *bootscr_address, u64 *bootscr_offset);
+
#else /* CONFIG_DM */
static inline bool ofnode_conf_read_bool(const char *prop_name)
{
@@ -1528,6 +1549,11 @@
return NULL;
}
+static inline int ofnode_read_bootscript_address(u64 *bootscr_address, u64 *bootscr_offset)
+{
+ return -EINVAL;
+}
+
#endif /* CONFIG_DM */
/**
diff --git a/test/dm/ofnode.c b/test/dm/ofnode.c
index b74f5c2..621a4b4 100644
--- a/test/dm/ofnode.c
+++ b/test/dm/ofnode.c
@@ -583,6 +583,20 @@
}
DM_TEST(dm_test_ofnode_conf, 0);
+static int dm_test_ofnode_options(struct unit_test_state *uts)
+{
+ u64 bootscr_address;
+ u64 bootscr_offset;
+
+ ut_assertok(ofnode_read_bootscript_address(&bootscr_address,
+ &bootscr_offset));
+ ut_asserteq_64(0, bootscr_address);
+ ut_asserteq_64(0x12345678, bootscr_offset);
+
+ return 0;
+}
+DM_TEST(dm_test_ofnode_options, 0);
+
static int dm_test_ofnode_for_each_compatible_node(struct unit_test_state *uts)
{
const char compatible[] = "denx,u-boot-fdt-test";