Merge changes from topic "hst/cs1k-add-gpt-support" into integration

* changes:
  feat(bl2): add gpt support
  fix(corstone-1000): modify boot device dependencies
  fix(corstone-1000): removing the signature area
diff --git a/plat/arm/board/corstone1000/common/corstone1000_plat.c b/plat/arm/board/corstone1000/common/corstone1000_plat.c
index 0235f8b..ed3801c 100644
--- a/plat/arm/board/corstone1000/common/corstone1000_plat.c
+++ b/plat/arm/board/corstone1000/common/corstone1000_plat.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2021-2022, Arm Limited and Contributors. All rights reserved.
+ * Copyright (c) 2021-2023, Arm Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -33,36 +33,16 @@
 static void set_fip_image_source(void)
 {
 	const struct plat_io_policy *policy;
-	/*
-	 * metadata for firmware update is written at 0x0000 offset of the flash.
-	 * PLAT_ARM_BOOT_BANK_FLAG contains the boot bank that TF-M is booted.
-	 * As per firmware update spec, at a given point of time, only one bank
-	 * is active. This means, TF-A should boot from the same bank as TF-M.
-	 */
-	volatile uint32_t *boot_bank_flag = (uint32_t *)(PLAT_ARM_BOOT_BANK_FLAG);
-
-	if (*boot_bank_flag > 1) {
-		VERBOSE("Boot_bank is set higher than possible values");
-	}
-
-	VERBOSE("Boot bank flag = %u.\n\r", *boot_bank_flag);
-
 	policy = FCONF_GET_PROPERTY(arm, io_policies, FIP_IMAGE_ID);
 
 	assert(policy != NULL);
 	assert(policy->image_spec != 0UL);
 
+	/* FIP Partition contains Signature area at the beginning which TF-A doesn't expect */
 	io_block_spec_t *spec = (io_block_spec_t *)policy->image_spec;
+	spec->offset += FIP_SIGNATURE_AREA_SIZE;
+	spec->length -= FIP_SIGNATURE_AREA_SIZE;
 
-	if ((*boot_bank_flag) == 0) {
-		VERBOSE("Booting from bank 0: fip offset = 0x%lx\n\r",
-						PLAT_ARM_FIP_BASE_BANK0);
-		spec->offset = PLAT_ARM_FIP_BASE_BANK0;
-	} else {
-		VERBOSE("Booting from bank 1: fip offset = 0x%lx\n\r",
-						PLAT_ARM_FIP_BASE_BANK1);
-		spec->offset = PLAT_ARM_FIP_BASE_BANK1;
-	}
 }
 
 void bl2_platform_setup(void)
diff --git a/plat/arm/board/corstone1000/common/include/platform_def.h b/plat/arm/board/corstone1000/common/include/platform_def.h
index 584d485..442d187 100644
--- a/plat/arm/board/corstone1000/common/include/platform_def.h
+++ b/plat/arm/board/corstone1000/common/include/platform_def.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2021-2022, Arm Limited and Contributors. All rights reserved.
+ * Copyright (c) 2021-2023, Arm Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -173,16 +173,15 @@
 
 /* NOR Flash */
 
-#define PLAT_ARM_BOOT_BANK_FLAG		UL(0x08002000)
-#define PLAT_ARM_FIP_BASE_BANK0		UL(0x081EF000)
-#define PLAT_ARM_FIP_BASE_BANK1		UL(0x0916F000)
-#define PLAT_ARM_FIP_MAX_SIZE		UL(0x1ff000)  /* 1.996 MB */
-
 #define PLAT_ARM_NVM_BASE		V2M_FLASH0_BASE
 #define PLAT_ARM_NVM_SIZE		(SZ_32M)  /* 32 MB */
-
-#define PLAT_ARM_FLASH_IMAGE_BASE	PLAT_ARM_FIP_BASE_BANK0
+#define PLAT_ARM_FIP_MAX_SIZE		UL(0x1ff000)  /* 1.996 MB */
+#define PLAT_ARM_FLASH_IMAGE_BASE	UL(0x08000000)
 #define PLAT_ARM_FLASH_IMAGE_MAX_SIZE	PLAT_ARM_FIP_MAX_SIZE
+#define PLAT_ARM_FIP_OFFSET_IN_GPT	(0x86000)
+
+/* FIP Information */
+#define FIP_SIGNATURE_AREA_SIZE         (0x1000)      /* 4 KB */
 
 /*
  * Some data must be aligned on the biggest cache line size in the platform.
diff --git a/plat/arm/common/arm_bl2_el3_setup.c b/plat/arm/common/arm_bl2_el3_setup.c
index b598c59..01e0db0 100644
--- a/plat/arm/common/arm_bl2_el3_setup.c
+++ b/plat/arm/common/arm_bl2_el3_setup.c
@@ -7,6 +7,7 @@
 #include <assert.h>
 
 #include <drivers/generic_delay_timer.h>
+#include <drivers/partition/partition.h>
 #include <plat/arm/common/plat_arm.h>
 #include <plat/common/platform.h>
 #include <platform_def.h>
@@ -94,7 +95,15 @@
 
 void bl2_el3_plat_arch_setup(void)
 {
+	int __maybe_unused ret;
 	arm_bl2_el3_plat_arch_setup();
+#if ARM_GPT_SUPPORT
+	ret = gpt_partition_init();
+	if (ret != 0) {
+		ERROR("GPT partition initialisation failed!\n");
+		panic();
+	}
+#endif /* ARM_GPT_SUPPORT */
 }
 
 void bl2_el3_plat_prepare_exit(void)