meta-arm/meta-arm-bsp/recipes-bsp/u-boot/u-boot/corstone1000/0022-efi_loader-send-bootcomplete-message-to-secure-encla.patch

From 902d5c499b6627a505986d298986a4ac430592b8 Mon Sep 17 00:00:00 2001
From: Vishnu Banavath <vishnu.banavath@arm.com>
Date: Wed, 5 Jan 2022 17:56:09 +0000
Subject: [PATCH 22/24] efi_loader: send bootcomplete message to secure enclave

On corstone1000 platform, Secure Enclave will be expecting
an event from uboot when it performs capsule update. Previously,
an event is sent at exitbootservice level. This will create a problem
when user wants to interrupt at UEFI shell, hence, it is required
to send an uboot efi initialized event at efi sub-system initialization
stage.

Signed-off-by: Rui Miguel Silva <rui.silva@linaro.org>
---
 include/configs/corstone1000.h |  2 +-
 lib/efi_loader/efi_boottime.c  | 49 ----------------------------------
 lib/efi_loader/efi_firmware.c  |  2 +-
 lib/efi_loader/efi_setup.c     | 48 +++++++++++++++++++++++++++++++++
 4 files changed, 50 insertions(+), 51 deletions(-)

diff --git a/include/configs/corstone1000.h b/include/configs/corstone1000.h
index a7445e61348b..06b605e43bdf 100644
--- a/include/configs/corstone1000.h
+++ b/include/configs/corstone1000.h
@@ -22,7 +22,7 @@
 
 /* Notification events used with SE Proxy update service */
 #define CORSTONE1000_BUFFER_READY_EVT		(0x1)
-#define CORSTONE1000_KERNEL_STARTED_EVT		(0x2)
+#define CORSTONE1000_UBOOT_EFI_STARTED_EVT	(0x2)
 
 #define PREP_SEPROXY_SVC_ID_MASK	GENMASK(31, 16)
 #define PREP_SEPROXY_SVC_ID(x)	 (FIELD_PREP(PREP_SEPROXY_SVC_ID_MASK, (x)))
diff --git a/lib/efi_loader/efi_boottime.c b/lib/efi_loader/efi_boottime.c
index 140d0f4f71da..6b9f5cf272b8 100644
--- a/lib/efi_loader/efi_boottime.c
+++ b/lib/efi_loader/efi_boottime.c
@@ -2100,46 +2100,6 @@ static void efi_exit_caches(void)
 #endif
 }
 
-#if IS_ENABLED(CONFIG_TARGET_CORSTONE1000)
-/**
- * efi_corstone1000_kernel_started_event - notifies SE Proxy FW update service
- *
- * This function notifies the SE Proxy update service that the kernel has already started
- *
- * Return:
- *
- * 0: on success, otherwise failure
- */
-static int efi_corstone1000_kernel_started_event(void)
-{
-	struct ffa_interface_data func_data = {0};
-	struct ffa_send_direct_data msg = {0};
-	u16 part_id = CORSTONE1000_SEPROXY_PART_ID;
-
-	log_debug("[%s]\n", __func__);
-
-	/*
-	 * telling the driver which partition to use
-	 */
-	func_data.data0_size = sizeof(part_id);
-	func_data.data0 = &part_id;
-
-	/*
-	 * setting the kernel started  event arguments:
-	 * setting capsule update interface ID(31:16)
-	 * the kernel started event ID(15:0)
-	 */
-	msg.a4 = PREP_SEPROXY_SVC_ID(CORSTONE1000_SEPROXY_UPDATE_SVC_ID) |
-	PREP_SEPROXY_EVT(CORSTONE1000_KERNEL_STARTED_EVT);
-
-	func_data.data1_size = sizeof(msg);
-	func_data.data1 = &msg;
-
-	return ffa_helper_msg_send_direct_req(&func_data);
-}
-
-#endif
-
 /**
  * efi_exit_boot_services() - stop all boot services
  * @image_handle: handle of the loaded image
@@ -2253,15 +2213,6 @@ static efi_status_t EFIAPI efi_exit_boot_services(efi_handle_t image_handle,
 	/* Recalculate CRC32 */
 	efi_update_table_header_crc32(&systab.hdr);
 
-#if IS_ENABLED(CONFIG_TARGET_CORSTONE1000)
-	/* Notifying SE Proxy FW update service */
-	ffa_ret = efi_corstone1000_kernel_started_event();
-	if (ffa_ret)
-		debug("[efi_boottime][ERROR]: Failure to notify SE Proxy FW update service\n");
-	else
-		debug("[efi_boottime][INFO]: SE Proxy FW update service notified\n");
-#endif
-
 	/* Give the payload some time to boot */
 	efi_set_watchdog(0);
 	WATCHDOG_RESET();
diff --git a/lib/efi_loader/efi_firmware.c b/lib/efi_loader/efi_firmware.c
index af43d4502f92..25f427b93669 100644
--- a/lib/efi_loader/efi_firmware.c
+++ b/lib/efi_loader/efi_firmware.c
@@ -47,7 +47,7 @@ static efi_status_t efi_corstone1000_img_info_get (
 		*package_version_name = NULL; /* not supported */
 
 	if(image_info == NULL) {
-		log_warning("image_info is null\n");
+		log_info("image_info is null\n");
 		return EFI_BUFFER_TOO_SMALL;
 	}
 
diff --git a/lib/efi_loader/efi_setup.c b/lib/efi_loader/efi_setup.c
index bfd4687e10b5..a20128e9b582 100644
--- a/lib/efi_loader/efi_setup.c
+++ b/lib/efi_loader/efi_setup.c
@@ -17,6 +17,9 @@
 efi_status_t efi_obj_list_initialized = OBJ_LIST_NOT_INITIALIZED;
 
 #if IS_ENABLED(CONFIG_TARGET_CORSTONE1000)
+#include <linux/bitfield.h>
+#include <linux/bitops.h>
+#include <arm_ffa_helper.h>
 /**
  * efi_corstone1000_alloc_capsule_shared_buf - allocate capsule shared buffer
  */
@@ -126,6 +129,44 @@ static efi_status_t efi_init_secure_boot(void)
 }
 #endif /* CONFIG_EFI_SECURE_BOOT */
 
+#if IS_ENABLED(CONFIG_TARGET_CORSTONE1000)
+/**
+ * efi_corstone1000_uboot-efi_started_event - notifies SE Proxy FW update service
+ *
+ * This function notifies the SE Proxy update service that uboot efi has already started
+ *
+ * Return:
+ *
+ * 0: on success, otherwise failure
+ * */
+static int efi_corstone1000_uboot_efi_started_event(void)
+{
+	struct ffa_interface_data func_data = {0};
+	struct ffa_send_direct_data msg = {0};
+	u16 part_id = CORSTONE1000_SEPROXY_PART_ID;
+
+	log_debug("[%s]\n", __func__);
+
+	/*
+	 * telling the driver which partition to use
+	 */
+	func_data.data0_size = sizeof(part_id);
+	func_data.data0 = &part_id;
+	/*
+	 * setting the uboot efi subsystem started  event arguments:
+	 * setting capsule update interface ID(31:16)
+	 * the uboot efi subsystem started event ID(15:0)
+	 */
+	msg.a4 = PREP_SEPROXY_SVC_ID(CORSTONE1000_SEPROXY_UPDATE_SVC_ID) |
+			PREP_SEPROXY_EVT(CORSTONE1000_UBOOT_EFI_STARTED_EVT);
+
+	func_data.data1_size = sizeof(msg);
+	func_data.data1 = &msg;
+
+	return ffa_helper_msg_send_direct_req(&func_data);
+}
+#endif
+
 /**
  * efi_init_capsule - initialize capsule update state
  *
@@ -134,8 +175,15 @@ static efi_status_t efi_init_secure_boot(void)
 static efi_status_t efi_init_capsule(void)
 {
 	efi_status_t ret = EFI_SUCCESS;
+	int ffa_ret;
 
 #if IS_ENABLED(CONFIG_TARGET_CORSTONE1000)
+	ffa_ret = efi_corstone1000_uboot_efi_started_event();
+	if (ffa_ret)
+		debug("[efi_boottime][ERROR]: Failure to notify SE Proxy FW update service\n");
+	else
+		debug("[efi_boottime][INFO]: SE Proxy FW update service notified\n");
+
 	ret = efi_corstone1000_alloc_capsule_shared_buf();
 	if (ret != EFI_SUCCESS) {
 		printf("EFI: Corstone-1000: cannot allocate caspsule shared buffer\n");
-- 
2.37.1