[PATCH v2 11/17] common: tlv: default decoder for signed TLV

[Jonas Rebmann <jre@pengutronix.de>]

Introduce a second default decoder that behaves just like barebox_tlv_v1
but uses the "tlv-generic" keyring.

Signed-off-by: Jonas Rebmann <jre@pengutronix.de>
---
 .../devicetree/bindings/nvmem/barebox,tlv.yaml     |  1 +
 common/tlv/barebox.c                               | 25 +++++++++++++++++++++-
 include/tlv/format.h                               |  1 +
 3 files changed, 26 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/nvmem/barebox,tlv.yaml b/Documentation/devicetree/bindings/nvmem/barebox,tlv.yaml
index 7a77b9a0b4..7d678ee04a 100644
--- a/Documentation/devicetree/bindings/nvmem/barebox,tlv.yaml
+++ b/Documentation/devicetree/bindings/nvmem/barebox,tlv.yaml
@@ -22,6 +22,7 @@ properties:
     items:
       - enum:
         - barebox,tlv-v1        # magic: 0x61bb95f2
+        - barebox,tlv-v1-signed # magic: 0x61bb95f3
         - lxa,tlv-baseboard-v1  # magic: 0xbc288dfe
         - lxa,tlv-powerboard-v1 # magic: 0xdca5a870
       - const: barebox,tlv
diff --git a/common/tlv/barebox.c b/common/tlv/barebox.c
index b941463b31..24de3eeaaa 100644
--- a/common/tlv/barebox.c
+++ b/common/tlv/barebox.c
@@ -177,16 +177,39 @@ static struct of_device_id of_matches[] = {
 	{ .compatible = "barebox,tlv-v1" },
 	{ /* sentinel */}
 };
+static struct of_device_id of_matches_signed[] = {
+	{ .compatible = "barebox,tlv-v1-signed" },
+	{ /* sentinel */ }
+};
 
 static struct tlv_decoder barebox_tlv_v1 = {
 	.magic = TLV_MAGIC_BAREBOX_V1,
 	.driver.name = "barebox-tlv-v1",
 	.driver.of_compatible = of_matches,
 	.mappings = mappings,
+	.signature_keyring = NULL,
+};
+
+static struct tlv_decoder barebox_tlv_v1_signed = {
+	.magic = TLV_MAGIC_BAREBOX_V1_SIGNED,
+	.driver.name = "barebox-tlv-v1-signed",
+	.driver.of_compatible = of_matches_signed,
+	.mappings = mappings,
+	.signature_keyring = "tlv-generic",
 };
 
 static int tlv_register_default(void)
 {
-	return tlv_register_decoder(&barebox_tlv_v1);
+	int err;
+
+	err = tlv_register_decoder(&barebox_tlv_v1);
+	if (err)
+		return err;
+	if (IS_ENABLED(CONFIG_TLV_SIGNATURE)) {
+		err = tlv_register_decoder(&barebox_tlv_v1_signed);
+		if (err)
+			return err;
+	}
+	return 0;
 }
 device_initcall(tlv_register_default);
diff --git a/include/tlv/format.h b/include/tlv/format.h
index cbe0a132b1..ab12f0c9bb 100644
--- a/include/tlv/format.h
+++ b/include/tlv/format.h
@@ -23,6 +23,7 @@
 #include <linux/build_bug.h>
 
 #define TLV_MAGIC_BAREBOX_V1		0x61bb95f2
+#define TLV_MAGIC_BAREBOX_V1_SIGNED	0x61bb95f3
 #define TLV_MAGIC_LXA_BASEBOARD_V1	0xbc288dfe
 #define TLV_MAGIC_LXA_POWERBOARD_V1	0xc6895c21
 #define TLV_MAGIC_LXA_IOBOARD_V1	0xdca5a870

-- 
2.51.2.535.g419c72cb8a