Merge changes from topic "fw-update" into integration

* changes:
  docs: add build options for GPT support enablement
  feat(plat/arm): add GPT parser support

docs/plat/arm/arm-build-options.rst

@@ -104,6 +104,14 @@ Arm Platform Build Options
    device tree. This flag is defined only when ``ARM_SPMC_MANIFEST_DTS`` manifest
    file name contains pattern optee_sp.
 
+-  ``ARM_GPT_SUPPORT``: Enable GPT parser to get the entry address and length of
+   the various partitions present in the GPT image. This support is available
+   only for the BL2 component, and it is disabled by default.
+   The following diagram shows the view of the FIP partition inside the GPT
+   image:
+
+   |FIP in a GPT image|
+
 For a better understanding of these options, the Arm development platform memory
 map is explained in the :ref:`Firmware Design`.
 
@@ -140,4 +148,6 @@ Arm CSS Platform-Specific Build Options
 
 --------------
 
+.. |FIP in a GPT image| image:: ../../resources/diagrams/FIP_in_a_GPT_image.png
+
 *Copyright (c) 2019-2021, Arm Limited. All rights reserved.*

include/plat/arm/board/common/board_css_def.h

 /*
- * Copyright (c) 2015-2020, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2015-2021, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -47,6 +47,16 @@
 #define PLAT_ARM_FLASH_IMAGE_BASE	V2M_FLASH0_BASE
 #define PLAT_ARM_FLASH_IMAGE_MAX_SIZE	(V2M_FLASH0_SIZE - V2M_FLASH_BLOCK_SIZE)
 
+#if ARM_GPT_SUPPORT
+/*
+ * Offset of the FIP in the GPT image. BL1 component uses this option
+ * as it does not load the partition table to get the FIP base
+ * address. At sector 34 by default (i.e. after reserved sectors 0-33)
+ * Offset = 34 * 512(sector size) = 17408 i.e. 0x4400
+ */
+#define PLAT_ARM_FIP_OFFSET_IN_GPT		0x4400
+#endif /* ARM_GPT_SUPPORT */
+
 #define PLAT_ARM_NVM_BASE		V2M_FLASH0_BASE
 #define PLAT_ARM_NVM_SIZE		(V2M_FLASH0_SIZE - V2M_FLASH_BLOCK_SIZE)
 

include/plat/arm/common/plat_arm.h

 /*
- * Copyright (c) 2015-2020, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2015-2021, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -152,6 +152,9 @@ void arm_setup_romlib(void);
 /* IO storage utility functions */
 int arm_io_setup(void);
 
+/* Set image specification in IO block policy */
+int arm_set_image_source(unsigned int image_id, const char *part_name);
+
 /* Security utility functions */
 void arm_tzc400_setup(uintptr_t tzc_base,
 			const arm_tzc_regions_info_t *tzc_regions);

plat/arm/board/fvp/include/platform_def.h

 /*
- * Copyright (c) 2014-2020, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2014-2021, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -115,7 +115,7 @@
 #if USE_ROMLIB
 #define PLAT_ARM_MAX_ROMLIB_RW_SIZE	UL(0x1000)
 #define PLAT_ARM_MAX_ROMLIB_RO_SIZE	UL(0xe000)
-#define FVP_BL2_ROMLIB_OPTIMIZATION UL(0x6000)
+#define FVP_BL2_ROMLIB_OPTIMIZATION	UL(0x5000)
 #else
 #define PLAT_ARM_MAX_ROMLIB_RW_SIZE	UL(0)
 #define PLAT_ARM_MAX_ROMLIB_RO_SIZE	UL(0)
@@ -188,6 +188,16 @@
 #define PLAT_ARM_FLASH_IMAGE_BASE	V2M_FLASH0_BASE
 #define PLAT_ARM_FLASH_IMAGE_MAX_SIZE	(V2M_FLASH0_SIZE - V2M_FLASH_BLOCK_SIZE)
 
+#if ARM_GPT_SUPPORT
+/*
+ * Offset of the FIP in the GPT image. BL1 component uses this option
+ * as it does not load the partition table to get the FIP base
+ * address. At sector 34 by default (i.e. after reserved sectors 0-33)
+ * Offset = 34 * 512(sector size) = 17408 i.e. 0x4400
+ */
+#define PLAT_ARM_FIP_OFFSET_IN_GPT	0x4400
+#endif /* ARM_GPT_SUPPORT */
+
 #define PLAT_ARM_NVM_BASE		V2M_FLASH0_BASE
 #define PLAT_ARM_NVM_SIZE		(V2M_FLASH0_SIZE - V2M_FLASH_BLOCK_SIZE)
 

plat/arm/common/arm_bl2_setup.c

 /*
- * Copyright (c) 2015-2020, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2015-2021, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -14,6 +14,7 @@
 #include <common/debug.h>
 #include <common/desc_image_load.h>
 #include <drivers/generic_delay_timer.h>
+#include <drivers/partition/partition.h>
 #include <lib/fconf/fconf.h>
 #include <lib/fconf/fconf_dyn_cfg_getter.h>
 #ifdef SPD_opteed
@@ -70,6 +71,12 @@ void arm_bl2_early_platform_setup(uintptr_t fw_config,
 
 	/* Initialise the IO layer and register platform IO devices */
 	plat_arm_io_setup();
+
+	/* Load partition table */
+#if ARM_GPT_SUPPORT
+	partition_init(GPT_IMAGE_ID);
+#endif /* ARM_GPT_SUPPORT */
+
 }
 
 void bl2_early_platform_setup2(u_register_t arg0, u_register_t arg1, u_register_t arg2, u_register_t arg3)
@@ -86,6 +93,14 @@ void bl2_early_platform_setup2(u_register_t arg0, u_register_t arg1, u_register_
 void bl2_plat_preload_setup(void)
 {
 	arm_bl2_dyn_cfg_init();
+
+#if ARM_GPT_SUPPORT
+	int result = arm_set_image_source(FIP_IMAGE_ID, "FIP_A");
+
+	if (result != 0) {
+		panic();
+	}
+#endif /* ARM_GPT_SUPPORT */
 }
 
 /*

plat/arm/common/arm_common.mk

@@ -167,6 +167,17 @@ ifeq (${ARM_CRYPTOCELL_INTEG},1)
     endif
 endif
 
+# Disable GPT parser support, use FIP image by default
+ARM_GPT_SUPPORT			:=	0
+$(eval $(call assert_boolean,ARM_GPT_SUPPORT))
+$(eval $(call add_define,ARM_GPT_SUPPORT))
+
+# Include necessary sources to parse GPT image
+ifeq (${ARM_GPT_SUPPORT}, 1)
+  BL2_SOURCES	+=	drivers/partition/gpt.c		\
+			drivers/partition/partition.c
+endif
+
 ifeq (${ARCH}, aarch64)
 PLAT_INCLUDES		+=	-Iinclude/plat/arm/common/aarch64
 endif

plat/arm/common/arm_io_storage.c

 /*
- * Copyright (c) 2015-2020, ARM Limited. All rights reserved.
+ * Copyright (c) 2015-2021, ARM Limited. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -9,6 +9,7 @@
 #include <drivers/io/io_fip.h>
 #include <drivers/io/io_memmap.h>
 #include <drivers/io/io_storage.h>
+#include <drivers/partition/partition.h>
 #include <lib/utils.h>
 
 #include <plat/arm/common/arm_fconf_getter.h>
@@ -136,3 +137,40 @@ bool arm_io_is_toc_valid(void)
 {
 	return (io_dev_init(fip_dev_handle, (uintptr_t)FIP_IMAGE_ID) == 0);
 }
+
+#if ARM_GPT_SUPPORT
+/**********************************************************************
+ * arm_set_image_source: Set image specification in IO policy
+ *
+ * @image_id: id of the image whose specification to be set
+ *
+ * @part_name: name of the partition that to be read for entry details
+ *
+ * set the entry and offset details of partition in global IO policy
+ * of the image
+ *********************************************************************/
+int arm_set_image_source(unsigned int image_id, const char *part_name)
+{
+	const partition_entry_t *entry = get_partition_entry(part_name);
+
+	if (entry == NULL) {
+		ERROR("Unable to find the %s partition\n", part_name);
+		return -ENOENT;
+	}
+
+	const struct plat_io_policy *policy = FCONF_GET_PROPERTY(arm,
+								 io_policies,
+								 image_id);
+
+	assert(policy != NULL);
+	assert(policy->image_spec != 0UL);
+
+	/* set offset and length of the image */
+	io_block_spec_t *image_spec = (io_block_spec_t *)policy->image_spec;
+
+	image_spec->offset = PLAT_ARM_FLASH_IMAGE_BASE + entry->start;
+	image_spec->length = entry->length;
+
+	return 0;
+}
+#endif

plat/arm/common/fconf/arm_fconf_io.c

@@ -9,6 +9,7 @@
 #include <common/debug.h>
 #include <common/fdt_wrappers.h>
 #include <drivers/io/io_storage.h>
+#include <drivers/partition/partition.h>
 #include <lib/object_pool.h>
 #include <libfdt.h>
 #include <tools_share/firmware_image_package.h>
@@ -17,11 +18,35 @@
 #include <plat/arm/common/arm_fconf_io_storage.h>
 #include <platform_def.h>
 
-const io_block_spec_t fip_block_spec = {
+io_block_spec_t fip_block_spec = {
+/*
+ * This is fixed FIP address used by BL1, BL2 loads partition table
+ * to get FIP address.
+ */
+#if ARM_GPT_SUPPORT
+	.offset = PLAT_ARM_FLASH_IMAGE_BASE + PLAT_ARM_FIP_OFFSET_IN_GPT,
+#else
 	.offset = PLAT_ARM_FLASH_IMAGE_BASE,
+#endif /* ARM_GPT_SUPPORT */
 	.length = PLAT_ARM_FLASH_IMAGE_MAX_SIZE
 };
 
+#if ARM_GPT_SUPPORT
+static const io_block_spec_t gpt_spec = {
+	.offset         = PLAT_ARM_FLASH_IMAGE_BASE,
+	/*
+	 * PLAT_PARTITION_BLOCK_SIZE = 512
+	 * PLAT_PARTITION_MAX_ENTRIES = 128
+	 * each sector has 4 partition entries, and there are
+	 * 2 reserved sectors i.e. protective MBR and primary
+	 * GPT header hence length gets calculated as,
+	 * length = 512 * (128/4 + 2)
+	 */
+	.length         = PLAT_PARTITION_BLOCK_SIZE *
+			  (PLAT_PARTITION_MAX_ENTRIES / 4 + 2),
+};
+#endif /* ARM_GPT_SUPPORT */
+
 const io_uuid_spec_t arm_uuid_spec[MAX_NUMBER_IDS] = {
 	[BL2_IMAGE_ID] = {UUID_TRUSTED_BOOT_FIRMWARE_BL2},
 	[TB_FW_CONFIG_ID] = {UUID_TB_FW_CONFIG},
@@ -60,6 +85,13 @@ const io_uuid_spec_t arm_uuid_spec[MAX_NUMBER_IDS] = {
 
 /* By default, ARM platforms load images from the FIP */
 struct plat_io_policy policies[MAX_NUMBER_IDS] = {
+#if ARM_GPT_SUPPORT
+	[GPT_IMAGE_ID] = {
+		&memmap_dev_handle,
+		(uintptr_t)&gpt_spec,
+		open_memmap
+	},
+#endif /* ARM_GPT_SUPPORT */
 	[FIP_IMAGE_ID] = {
 		&memmap_dev_handle,
 		(uintptr_t)&fip_block_spec,

plat/arm/css/sgi/include/sgi_soc_css_def_v2.h

@@ -187,6 +187,16 @@
 #define PLAT_ARM_FLASH_IMAGE_BASE	V2M_FLASH0_BASE
 #define PLAT_ARM_FLASH_IMAGE_MAX_SIZE	(V2M_FLASH0_SIZE - V2M_FLASH_BLOCK_SIZE)
 
+#if ARM_GPT_SUPPORT
+/*
+ * Offset of the FIP in the GPT image. BL1 component uses this option
+ * as it does not load the partition table to get the FIP base
+ * address. At sector 34 by default (i.e. after reserved sectors 0-33)
+ * Offset = 34 * 512(sector size) = 17408 i.e. 0x4400
+ */
+#define PLAT_ARM_FIP_OFFSET_IN_GPT		0x4400
+#endif /* ARM_GPT_SUPPORT */
+
 #define PLAT_ARM_NVM_BASE		V2M_FLASH0_BASE
 #define PLAT_ARM_NVM_SIZE		(V2M_FLASH0_SIZE - V2M_FLASH_BLOCK_SIZE)