[U-Boot] [PATCH 3/7] firmware: ti_sci: Modify auth_boot TI-SCI API to match new version

[Andrew F. Davis]

SYSFW version 2019.01 introduces a slightly modified version of this API,
add support for it here.

Signed-off-by: Andrew F. Davis <afd at ti.com>
---
 drivers/firmware/ti_sci.c              | 25 ++++++++++++++++---------
 drivers/firmware/ti_sci.h              |  9 +++++++--
 include/linux/soc/ti/ti_sci_protocol.h |  4 ++--
 3 files changed, 25 insertions(+), 13 deletions(-)

diff --git a/drivers/firmware/ti_sci.c b/drivers/firmware/ti_sci.c
index edd6e094df..d1612eb551 100644
--- a/drivers/firmware/ti_sci.c
+++ b/drivers/firmware/ti_sci.c
@@ -1700,16 +1700,19 @@ static int ti_sci_cmd_set_proc_boot_ctrl(const struct ti_sci_handle *handle,
  * ti_sci_cmd_proc_auth_boot_image() - Command to authenticate and load the
  *			image and then set the processor configuration flags.
  * @handle:	Pointer to TI SCI handle
- * @proc_id:	Processor ID this request is for
- * @cert_addr:	Memory address at which payload image certificate is located.
+ * @image_addr:	Memory address at which payload image and certificate is
+ *		located in memory, this is updated if the image data is
+ *		moved during authentication.
+ * @image_size: This is updated with the final size of the image after
+ *		authentication.
  *
  * Return: 0 if all went well, else returns appropriate error value.
  */
 static int ti_sci_cmd_proc_auth_boot_image(const struct ti_sci_handle *handle,
-					   u8 proc_id, u64 cert_addr)
+					   u64 *image_addr, u32 *image_size)
 {
 	struct ti_sci_msg_req_proc_auth_boot_image req;
-	struct ti_sci_msg_hdr *resp;
+	struct ti_sci_msg_resp_proc_auth_boot_image *resp;
 	struct ti_sci_info *info;
 	struct ti_sci_xfer *xfer;
 	int ret = 0;
@@ -1729,9 +1732,8 @@ static int ti_sci_cmd_proc_auth_boot_image(const struct ti_sci_handle *handle,
 		dev_err(info->dev, "Message alloc failed(%d)\n", ret);
 		return ret;
 	}
-	req.processor_id = proc_id;
-	req.cert_addr_low = cert_addr & TISCI_ADDR_LOW_MASK;
-	req.cert_addr_high = (cert_addr & TISCI_ADDR_HIGH_MASK) >>
+	req.cert_addr_low = *image_addr & TISCI_ADDR_LOW_MASK;
+	req.cert_addr_high = (*image_addr & TISCI_ADDR_HIGH_MASK) >>
 				TISCI_ADDR_HIGH_SHIFT;
 
 	ret = ti_sci_do_xfer(info, xfer);
@@ -1740,10 +1742,15 @@ static int ti_sci_cmd_proc_auth_boot_image(const struct ti_sci_handle *handle,
 		return ret;
 	}
 
-	resp = (struct ti_sci_msg_hdr *)xfer->tx_message.buf;
+	resp = (struct ti_sci_msg_resp_proc_auth_boot_image *)xfer->tx_message.buf;
 
 	if (!ti_sci_is_response_ack(resp))
-		ret = -ENODEV;
+		return -ENODEV;
+
+	*image_addr = (resp->image_addr_low & TISCI_ADDR_LOW_MASK) |
+			(((u64)resp->image_addr_high <<
+			  TISCI_ADDR_HIGH_SHIFT) & TISCI_ADDR_HIGH_MASK);
+	*image_size = resp->image_size;
 
 	return ret;
 }
diff --git a/drivers/firmware/ti_sci.h b/drivers/firmware/ti_sci.h
index 2c92f475ed..c49e8b6358 100644
--- a/drivers/firmware/ti_sci.h
+++ b/drivers/firmware/ti_sci.h
@@ -622,7 +622,6 @@ struct ti_sci_msg_req_set_proc_boot_ctrl {
 /**
  * struct ti_sci_msg_req_proc_auth_start_image - Authenticate and start image
  * @hdr:		Generic Header
- * @processor_id:	ID of processor
  * @cert_addr_low:	Lower 32bit (Little Endian) of certificate
  * @cert_addr_high:	Higher 32bit (Little Endian) of certificate
  *
@@ -631,11 +630,17 @@ struct ti_sci_msg_req_set_proc_boot_ctrl {
  */
 struct ti_sci_msg_req_proc_auth_boot_image {
 	struct ti_sci_msg_hdr hdr;
-	u8 processor_id;
 	u32 cert_addr_low;
 	u32 cert_addr_high;
 } __packed;
 
+struct ti_sci_msg_resp_proc_auth_boot_image {
+	struct ti_sci_msg_hdr hdr;
+	u32 image_addr_low;
+	u32 image_addr_high;
+	u32 image_size;
+} __packed;
+
 /**
  * struct ti_sci_msg_req_get_proc_boot_status - Get processor boot status
  * @hdr:		Generic Header
diff --git a/include/linux/soc/ti/ti_sci_protocol.h b/include/linux/soc/ti/ti_sci_protocol.h
index f3c5b72860..c3bfa57253 100644
--- a/include/linux/soc/ti/ti_sci_protocol.h
+++ b/include/linux/soc/ti/ti_sci_protocol.h
@@ -250,8 +250,8 @@ struct ti_sci_proc_ops {
 				 u64 bv, u32 cfg_set, u32 cfg_clr);
 	int (*set_proc_boot_ctrl)(const struct ti_sci_handle *handle, u8 pid,
 				  u32 ctrl_set, u32 ctrl_clr);
-	int (*proc_auth_boot_image)(const struct ti_sci_handle *handle, u8 pid,
-				    u64 caddr);
+	int (*proc_auth_boot_image)(const struct ti_sci_handle *handle,
+				    u64 *image_addr, u32 *image_size);
 	int (*get_proc_boot_status)(const struct ti_sci_handle *handle, u8 pid,
 				    u64 *bv, u32 *cfg_flags, u32 *ctrl_flags,
 				    u32 *sts_flags);
-- 
2.19.1