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/*
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* Copyright (c) 2013-2020, ARM Limited and Contributors. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <assert.h>
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#include <platform_def.h>
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#include <arch.h>
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#include <arch_features.h>
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#include <arch_helpers.h>
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#include <bl1/bl1.h>
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#include <common/bl_common.h>
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#include <common/debug.h>
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#include <drivers/auth/auth_mod.h>
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#include <drivers/console.h>
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#include <lib/cpus/errata_report.h>
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#include <lib/utils.h>
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#include <plat/common/platform.h>
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#include <smccc_helpers.h>
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#include <tools_share/uuid.h>
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#include "bl1_private.h"
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/* BL1 Service UUID */
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DEFINE_SVC_UUID2(bl1_svc_uid,
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U(0xd46739fd), 0xcb72, 0x9a4d, 0xb5, 0x75,
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0x67, 0x15, 0xd6, 0xf4, 0xbb, 0x4a);
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Add descriptor based image management support in BL1
As of now BL1 loads and execute BL2 based on hard coded information
provided in BL1. But due to addition of support for upcoming Firmware
Update feature, BL1 now require more flexible approach to load and
run different images using information provided by the platform.
This patch adds new mechanism to load and execute images based on
platform provided image id's. BL1 now queries the platform to fetch
the image id of the next image to be loaded and executed. In order
to achieve this, a new struct image_desc_t was added which holds the
information about images, such as: ep_info and image_info.
This patch introduces following platform porting functions:
unsigned int bl1_plat_get_next_image_id(void);
This is used to identify the next image to be loaded
and executed by BL1.
struct image_desc *bl1_plat_get_image_desc(unsigned int image_id);
This is used to retrieve the image_desc for given image_id.
void bl1_plat_set_ep_info(unsigned int image_id,
struct entry_point_info *ep_info);
This function allows platforms to update ep_info for given
image_id.
The plat_bl1_common.c file provides default weak implementations of
all above functions, the `bl1_plat_get_image_desc()` always return
BL2 image descriptor, the `bl1_plat_get_next_image_id()` always return
BL2 image ID and `bl1_plat_set_ep_info()` is empty and just returns.
These functions gets compiled into all BL1 platforms by default.
Platform setup in BL1, using `bl1_platform_setup()`, is now done
_after_ the initialization of authentication module. This change
provides the opportunity to use authentication while doing the
platform setup in BL1.
In order to store secure/non-secure context, BL31 uses percpu_data[]
to store context pointer for each core. In case of BL1 only the
primary CPU will be active hence percpu_data[] is not required to
store the context pointer.
This patch introduce bl1_cpu_context[] and bl1_cpu_context_ptr[] to
store the context and context pointers respectively. It also also
re-defines cm_get_context() and cm_set_context() for BL1 in
bl1/bl1_context_mgmt.c.
BL1 now follows the BL31 pattern of using SP_EL0 for the C runtime
environment, to support resuming execution from a previously saved
context.
NOTE: THE `bl1_plat_set_bl2_ep_info()` PLATFORM PORTING FUNCTION IS
NO LONGER CALLED BY BL1 COMMON CODE. PLATFORMS THAT OVERRIDE
THIS FUNCTION MAY NEED TO IMPLEMENT `bl1_plat_set_ep_info()`
INSTEAD TO MAINTAIN EXISTING BEHAVIOUR.
Change-Id: Ieee4c124b951c2e9bc1c1013fa2073221195d881
9 years ago
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static void bl1_load_bl2(void);
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#if ENABLE_PAUTH
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uint64_t bl1_apiakey[2];
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#endif
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/*******************************************************************************
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* Helper utility to calculate the BL2 memory layout taking into consideration
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* the BL1 RW data assuming that it is at the top of the memory layout.
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******************************************************************************/
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void bl1_calc_bl2_mem_layout(const meminfo_t *bl1_mem_layout,
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meminfo_t *bl2_mem_layout)
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{
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assert(bl1_mem_layout != NULL);
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assert(bl2_mem_layout != NULL);
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/*
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* Remove BL1 RW data from the scope of memory visible to BL2.
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* This is assuming BL1 RW data is at the top of bl1_mem_layout.
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*/
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assert(BL1_RW_BASE > bl1_mem_layout->total_base);
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bl2_mem_layout->total_base = bl1_mem_layout->total_base;
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bl2_mem_layout->total_size = BL1_RW_BASE - bl1_mem_layout->total_base;
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flush_dcache_range((uintptr_t)bl2_mem_layout, sizeof(meminfo_t));
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}
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/*******************************************************************************
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* Setup function for BL1.
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******************************************************************************/
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void bl1_setup(void)
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{
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/* Perform early platform-specific setup */
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bl1_early_platform_setup();
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/* Perform late platform-specific setup */
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bl1_plat_arch_setup();
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#if CTX_INCLUDE_PAUTH_REGS
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/*
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* Assert that the ARMv8.3-PAuth registers are present or an access
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* fault will be triggered when they are being saved or restored.
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*/
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assert(is_armv8_3_pauth_present());
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#endif /* CTX_INCLUDE_PAUTH_REGS */
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}
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/*******************************************************************************
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* Function to perform late architectural and platform specific initialization.
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Add descriptor based image management support in BL1
As of now BL1 loads and execute BL2 based on hard coded information
provided in BL1. But due to addition of support for upcoming Firmware
Update feature, BL1 now require more flexible approach to load and
run different images using information provided by the platform.
This patch adds new mechanism to load and execute images based on
platform provided image id's. BL1 now queries the platform to fetch
the image id of the next image to be loaded and executed. In order
to achieve this, a new struct image_desc_t was added which holds the
information about images, such as: ep_info and image_info.
This patch introduces following platform porting functions:
unsigned int bl1_plat_get_next_image_id(void);
This is used to identify the next image to be loaded
and executed by BL1.
struct image_desc *bl1_plat_get_image_desc(unsigned int image_id);
This is used to retrieve the image_desc for given image_id.
void bl1_plat_set_ep_info(unsigned int image_id,
struct entry_point_info *ep_info);
This function allows platforms to update ep_info for given
image_id.
The plat_bl1_common.c file provides default weak implementations of
all above functions, the `bl1_plat_get_image_desc()` always return
BL2 image descriptor, the `bl1_plat_get_next_image_id()` always return
BL2 image ID and `bl1_plat_set_ep_info()` is empty and just returns.
These functions gets compiled into all BL1 platforms by default.
Platform setup in BL1, using `bl1_platform_setup()`, is now done
_after_ the initialization of authentication module. This change
provides the opportunity to use authentication while doing the
platform setup in BL1.
In order to store secure/non-secure context, BL31 uses percpu_data[]
to store context pointer for each core. In case of BL1 only the
primary CPU will be active hence percpu_data[] is not required to
store the context pointer.
This patch introduce bl1_cpu_context[] and bl1_cpu_context_ptr[] to
store the context and context pointers respectively. It also also
re-defines cm_get_context() and cm_set_context() for BL1 in
bl1/bl1_context_mgmt.c.
BL1 now follows the BL31 pattern of using SP_EL0 for the C runtime
environment, to support resuming execution from a previously saved
context.
NOTE: THE `bl1_plat_set_bl2_ep_info()` PLATFORM PORTING FUNCTION IS
NO LONGER CALLED BY BL1 COMMON CODE. PLATFORMS THAT OVERRIDE
THIS FUNCTION MAY NEED TO IMPLEMENT `bl1_plat_set_ep_info()`
INSTEAD TO MAINTAIN EXISTING BEHAVIOUR.
Change-Id: Ieee4c124b951c2e9bc1c1013fa2073221195d881
9 years ago
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* It also queries the platform to load and run next BL image. Only called
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* by the primary cpu after a cold boot.
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******************************************************************************/
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void bl1_main(void)
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{
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Add descriptor based image management support in BL1
As of now BL1 loads and execute BL2 based on hard coded information
provided in BL1. But due to addition of support for upcoming Firmware
Update feature, BL1 now require more flexible approach to load and
run different images using information provided by the platform.
This patch adds new mechanism to load and execute images based on
platform provided image id's. BL1 now queries the platform to fetch
the image id of the next image to be loaded and executed. In order
to achieve this, a new struct image_desc_t was added which holds the
information about images, such as: ep_info and image_info.
This patch introduces following platform porting functions:
unsigned int bl1_plat_get_next_image_id(void);
This is used to identify the next image to be loaded
and executed by BL1.
struct image_desc *bl1_plat_get_image_desc(unsigned int image_id);
This is used to retrieve the image_desc for given image_id.
void bl1_plat_set_ep_info(unsigned int image_id,
struct entry_point_info *ep_info);
This function allows platforms to update ep_info for given
image_id.
The plat_bl1_common.c file provides default weak implementations of
all above functions, the `bl1_plat_get_image_desc()` always return
BL2 image descriptor, the `bl1_plat_get_next_image_id()` always return
BL2 image ID and `bl1_plat_set_ep_info()` is empty and just returns.
These functions gets compiled into all BL1 platforms by default.
Platform setup in BL1, using `bl1_platform_setup()`, is now done
_after_ the initialization of authentication module. This change
provides the opportunity to use authentication while doing the
platform setup in BL1.
In order to store secure/non-secure context, BL31 uses percpu_data[]
to store context pointer for each core. In case of BL1 only the
primary CPU will be active hence percpu_data[] is not required to
store the context pointer.
This patch introduce bl1_cpu_context[] and bl1_cpu_context_ptr[] to
store the context and context pointers respectively. It also also
re-defines cm_get_context() and cm_set_context() for BL1 in
bl1/bl1_context_mgmt.c.
BL1 now follows the BL31 pattern of using SP_EL0 for the C runtime
environment, to support resuming execution from a previously saved
context.
NOTE: THE `bl1_plat_set_bl2_ep_info()` PLATFORM PORTING FUNCTION IS
NO LONGER CALLED BY BL1 COMMON CODE. PLATFORMS THAT OVERRIDE
THIS FUNCTION MAY NEED TO IMPLEMENT `bl1_plat_set_ep_info()`
INSTEAD TO MAINTAIN EXISTING BEHAVIOUR.
Change-Id: Ieee4c124b951c2e9bc1c1013fa2073221195d881
9 years ago
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unsigned int image_id;
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/* Announce our arrival */
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NOTICE(FIRMWARE_WELCOME_STR);
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NOTICE("BL1: %s\n", version_string);
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NOTICE("BL1: %s\n", build_message);
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INFO("BL1: RAM %p - %p\n", (void *)BL1_RAM_BASE,
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(void *)BL1_RAM_LIMIT);
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print_errata_status();
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#if ENABLE_ASSERTIONS
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u_register_t val;
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/*
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* Ensure that MMU/Caches and coherency are turned on
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*/
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#ifdef __aarch64__
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val = read_sctlr_el3();
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#else
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val = read_sctlr();
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#endif
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assert(val & SCTLR_M_BIT);
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assert(val & SCTLR_C_BIT);
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assert(val & SCTLR_I_BIT);
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/*
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* Check that Cache Writeback Granule (CWG) in CTR_EL0 matches the
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* provided platform value
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*/
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val = (read_ctr_el0() >> CTR_CWG_SHIFT) & CTR_CWG_MASK;
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/*
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* If CWG is zero, then no CWG information is available but we can
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* at least check the platform value is less than the architectural
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* maximum.
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*/
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if (val != 0)
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assert(CACHE_WRITEBACK_GRANULE == SIZE_FROM_LOG2_WORDS(val));
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else
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assert(CACHE_WRITEBACK_GRANULE <= MAX_CACHE_LINE_SIZE);
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#endif /* ENABLE_ASSERTIONS */
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/* Perform remaining generic architectural setup from EL3 */
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bl1_arch_setup();
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Add descriptor based image management support in BL1
As of now BL1 loads and execute BL2 based on hard coded information
provided in BL1. But due to addition of support for upcoming Firmware
Update feature, BL1 now require more flexible approach to load and
run different images using information provided by the platform.
This patch adds new mechanism to load and execute images based on
platform provided image id's. BL1 now queries the platform to fetch
the image id of the next image to be loaded and executed. In order
to achieve this, a new struct image_desc_t was added which holds the
information about images, such as: ep_info and image_info.
This patch introduces following platform porting functions:
unsigned int bl1_plat_get_next_image_id(void);
This is used to identify the next image to be loaded
and executed by BL1.
struct image_desc *bl1_plat_get_image_desc(unsigned int image_id);
This is used to retrieve the image_desc for given image_id.
void bl1_plat_set_ep_info(unsigned int image_id,
struct entry_point_info *ep_info);
This function allows platforms to update ep_info for given
image_id.
The plat_bl1_common.c file provides default weak implementations of
all above functions, the `bl1_plat_get_image_desc()` always return
BL2 image descriptor, the `bl1_plat_get_next_image_id()` always return
BL2 image ID and `bl1_plat_set_ep_info()` is empty and just returns.
These functions gets compiled into all BL1 platforms by default.
Platform setup in BL1, using `bl1_platform_setup()`, is now done
_after_ the initialization of authentication module. This change
provides the opportunity to use authentication while doing the
platform setup in BL1.
In order to store secure/non-secure context, BL31 uses percpu_data[]
to store context pointer for each core. In case of BL1 only the
primary CPU will be active hence percpu_data[] is not required to
store the context pointer.
This patch introduce bl1_cpu_context[] and bl1_cpu_context_ptr[] to
store the context and context pointers respectively. It also also
re-defines cm_get_context() and cm_set_context() for BL1 in
bl1/bl1_context_mgmt.c.
BL1 now follows the BL31 pattern of using SP_EL0 for the C runtime
environment, to support resuming execution from a previously saved
context.
NOTE: THE `bl1_plat_set_bl2_ep_info()` PLATFORM PORTING FUNCTION IS
NO LONGER CALLED BY BL1 COMMON CODE. PLATFORMS THAT OVERRIDE
THIS FUNCTION MAY NEED TO IMPLEMENT `bl1_plat_set_ep_info()`
INSTEAD TO MAINTAIN EXISTING BEHAVIOUR.
Change-Id: Ieee4c124b951c2e9bc1c1013fa2073221195d881
9 years ago
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#if TRUSTED_BOARD_BOOT
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/* Initialize authentication module */
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auth_mod_init();
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#endif /* TRUSTED_BOARD_BOOT */
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/* Perform platform setup in BL1. */
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bl1_platform_setup();
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#if ENABLE_PAUTH
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/* Store APIAKey_EL1 key */
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bl1_apiakey[0] = read_apiakeylo_el1();
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bl1_apiakey[1] = read_apiakeyhi_el1();
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#endif /* ENABLE_PAUTH */
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Add descriptor based image management support in BL1
As of now BL1 loads and execute BL2 based on hard coded information
provided in BL1. But due to addition of support for upcoming Firmware
Update feature, BL1 now require more flexible approach to load and
run different images using information provided by the platform.
This patch adds new mechanism to load and execute images based on
platform provided image id's. BL1 now queries the platform to fetch
the image id of the next image to be loaded and executed. In order
to achieve this, a new struct image_desc_t was added which holds the
information about images, such as: ep_info and image_info.
This patch introduces following platform porting functions:
unsigned int bl1_plat_get_next_image_id(void);
This is used to identify the next image to be loaded
and executed by BL1.
struct image_desc *bl1_plat_get_image_desc(unsigned int image_id);
This is used to retrieve the image_desc for given image_id.
void bl1_plat_set_ep_info(unsigned int image_id,
struct entry_point_info *ep_info);
This function allows platforms to update ep_info for given
image_id.
The plat_bl1_common.c file provides default weak implementations of
all above functions, the `bl1_plat_get_image_desc()` always return
BL2 image descriptor, the `bl1_plat_get_next_image_id()` always return
BL2 image ID and `bl1_plat_set_ep_info()` is empty and just returns.
These functions gets compiled into all BL1 platforms by default.
Platform setup in BL1, using `bl1_platform_setup()`, is now done
_after_ the initialization of authentication module. This change
provides the opportunity to use authentication while doing the
platform setup in BL1.
In order to store secure/non-secure context, BL31 uses percpu_data[]
to store context pointer for each core. In case of BL1 only the
primary CPU will be active hence percpu_data[] is not required to
store the context pointer.
This patch introduce bl1_cpu_context[] and bl1_cpu_context_ptr[] to
store the context and context pointers respectively. It also also
re-defines cm_get_context() and cm_set_context() for BL1 in
bl1/bl1_context_mgmt.c.
BL1 now follows the BL31 pattern of using SP_EL0 for the C runtime
environment, to support resuming execution from a previously saved
context.
NOTE: THE `bl1_plat_set_bl2_ep_info()` PLATFORM PORTING FUNCTION IS
NO LONGER CALLED BY BL1 COMMON CODE. PLATFORMS THAT OVERRIDE
THIS FUNCTION MAY NEED TO IMPLEMENT `bl1_plat_set_ep_info()`
INSTEAD TO MAINTAIN EXISTING BEHAVIOUR.
Change-Id: Ieee4c124b951c2e9bc1c1013fa2073221195d881
9 years ago
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/* Get the image id of next image to load and run. */
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image_id = bl1_plat_get_next_image_id();
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/*
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* We currently interpret any image id other than
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* BL2_IMAGE_ID as the start of firmware update.
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*/
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Add descriptor based image management support in BL1
As of now BL1 loads and execute BL2 based on hard coded information
provided in BL1. But due to addition of support for upcoming Firmware
Update feature, BL1 now require more flexible approach to load and
run different images using information provided by the platform.
This patch adds new mechanism to load and execute images based on
platform provided image id's. BL1 now queries the platform to fetch
the image id of the next image to be loaded and executed. In order
to achieve this, a new struct image_desc_t was added which holds the
information about images, such as: ep_info and image_info.
This patch introduces following platform porting functions:
unsigned int bl1_plat_get_next_image_id(void);
This is used to identify the next image to be loaded
and executed by BL1.
struct image_desc *bl1_plat_get_image_desc(unsigned int image_id);
This is used to retrieve the image_desc for given image_id.
void bl1_plat_set_ep_info(unsigned int image_id,
struct entry_point_info *ep_info);
This function allows platforms to update ep_info for given
image_id.
The plat_bl1_common.c file provides default weak implementations of
all above functions, the `bl1_plat_get_image_desc()` always return
BL2 image descriptor, the `bl1_plat_get_next_image_id()` always return
BL2 image ID and `bl1_plat_set_ep_info()` is empty and just returns.
These functions gets compiled into all BL1 platforms by default.
Platform setup in BL1, using `bl1_platform_setup()`, is now done
_after_ the initialization of authentication module. This change
provides the opportunity to use authentication while doing the
platform setup in BL1.
In order to store secure/non-secure context, BL31 uses percpu_data[]
to store context pointer for each core. In case of BL1 only the
primary CPU will be active hence percpu_data[] is not required to
store the context pointer.
This patch introduce bl1_cpu_context[] and bl1_cpu_context_ptr[] to
store the context and context pointers respectively. It also also
re-defines cm_get_context() and cm_set_context() for BL1 in
bl1/bl1_context_mgmt.c.
BL1 now follows the BL31 pattern of using SP_EL0 for the C runtime
environment, to support resuming execution from a previously saved
context.
NOTE: THE `bl1_plat_set_bl2_ep_info()` PLATFORM PORTING FUNCTION IS
NO LONGER CALLED BY BL1 COMMON CODE. PLATFORMS THAT OVERRIDE
THIS FUNCTION MAY NEED TO IMPLEMENT `bl1_plat_set_ep_info()`
INSTEAD TO MAINTAIN EXISTING BEHAVIOUR.
Change-Id: Ieee4c124b951c2e9bc1c1013fa2073221195d881
9 years ago
|
|
|
if (image_id == BL2_IMAGE_ID)
|
|
|
|
|
bl1_load_bl2();
|
|
|
|
|
else
|
|
|
|
|
NOTICE("BL1-FWU: *******FWU Process Started*******\n");
|
Add descriptor based image management support in BL1
As of now BL1 loads and execute BL2 based on hard coded information
provided in BL1. But due to addition of support for upcoming Firmware
Update feature, BL1 now require more flexible approach to load and
run different images using information provided by the platform.
This patch adds new mechanism to load and execute images based on
platform provided image id's. BL1 now queries the platform to fetch
the image id of the next image to be loaded and executed. In order
to achieve this, a new struct image_desc_t was added which holds the
information about images, such as: ep_info and image_info.
This patch introduces following platform porting functions:
unsigned int bl1_plat_get_next_image_id(void);
This is used to identify the next image to be loaded
and executed by BL1.
struct image_desc *bl1_plat_get_image_desc(unsigned int image_id);
This is used to retrieve the image_desc for given image_id.
void bl1_plat_set_ep_info(unsigned int image_id,
struct entry_point_info *ep_info);
This function allows platforms to update ep_info for given
image_id.
The plat_bl1_common.c file provides default weak implementations of
all above functions, the `bl1_plat_get_image_desc()` always return
BL2 image descriptor, the `bl1_plat_get_next_image_id()` always return
BL2 image ID and `bl1_plat_set_ep_info()` is empty and just returns.
These functions gets compiled into all BL1 platforms by default.
Platform setup in BL1, using `bl1_platform_setup()`, is now done
_after_ the initialization of authentication module. This change
provides the opportunity to use authentication while doing the
platform setup in BL1.
In order to store secure/non-secure context, BL31 uses percpu_data[]
to store context pointer for each core. In case of BL1 only the
primary CPU will be active hence percpu_data[] is not required to
store the context pointer.
This patch introduce bl1_cpu_context[] and bl1_cpu_context_ptr[] to
store the context and context pointers respectively. It also also
re-defines cm_get_context() and cm_set_context() for BL1 in
bl1/bl1_context_mgmt.c.
BL1 now follows the BL31 pattern of using SP_EL0 for the C runtime
environment, to support resuming execution from a previously saved
context.
NOTE: THE `bl1_plat_set_bl2_ep_info()` PLATFORM PORTING FUNCTION IS
NO LONGER CALLED BY BL1 COMMON CODE. PLATFORMS THAT OVERRIDE
THIS FUNCTION MAY NEED TO IMPLEMENT `bl1_plat_set_ep_info()`
INSTEAD TO MAINTAIN EXISTING BEHAVIOUR.
Change-Id: Ieee4c124b951c2e9bc1c1013fa2073221195d881
9 years ago
|
|
|
|
|
|
|
|
bl1_prepare_next_image(image_id);
|
|
|
|
|
|
|
|
|
|
console_flush();
|
Add descriptor based image management support in BL1
As of now BL1 loads and execute BL2 based on hard coded information
provided in BL1. But due to addition of support for upcoming Firmware
Update feature, BL1 now require more flexible approach to load and
run different images using information provided by the platform.
This patch adds new mechanism to load and execute images based on
platform provided image id's. BL1 now queries the platform to fetch
the image id of the next image to be loaded and executed. In order
to achieve this, a new struct image_desc_t was added which holds the
information about images, such as: ep_info and image_info.
This patch introduces following platform porting functions:
unsigned int bl1_plat_get_next_image_id(void);
This is used to identify the next image to be loaded
and executed by BL1.
struct image_desc *bl1_plat_get_image_desc(unsigned int image_id);
This is used to retrieve the image_desc for given image_id.
void bl1_plat_set_ep_info(unsigned int image_id,
struct entry_point_info *ep_info);
This function allows platforms to update ep_info for given
image_id.
The plat_bl1_common.c file provides default weak implementations of
all above functions, the `bl1_plat_get_image_desc()` always return
BL2 image descriptor, the `bl1_plat_get_next_image_id()` always return
BL2 image ID and `bl1_plat_set_ep_info()` is empty and just returns.
These functions gets compiled into all BL1 platforms by default.
Platform setup in BL1, using `bl1_platform_setup()`, is now done
_after_ the initialization of authentication module. This change
provides the opportunity to use authentication while doing the
platform setup in BL1.
In order to store secure/non-secure context, BL31 uses percpu_data[]
to store context pointer for each core. In case of BL1 only the
primary CPU will be active hence percpu_data[] is not required to
store the context pointer.
This patch introduce bl1_cpu_context[] and bl1_cpu_context_ptr[] to
store the context and context pointers respectively. It also also
re-defines cm_get_context() and cm_set_context() for BL1 in
bl1/bl1_context_mgmt.c.
BL1 now follows the BL31 pattern of using SP_EL0 for the C runtime
environment, to support resuming execution from a previously saved
context.
NOTE: THE `bl1_plat_set_bl2_ep_info()` PLATFORM PORTING FUNCTION IS
NO LONGER CALLED BY BL1 COMMON CODE. PLATFORMS THAT OVERRIDE
THIS FUNCTION MAY NEED TO IMPLEMENT `bl1_plat_set_ep_info()`
INSTEAD TO MAINTAIN EXISTING BEHAVIOUR.
Change-Id: Ieee4c124b951c2e9bc1c1013fa2073221195d881
9 years ago
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*******************************************************************************
|
|
|
|
|
* This function locates and loads the BL2 raw binary image in the trusted SRAM.
|
|
|
|
|
* Called by the primary cpu after a cold boot.
|
|
|
|
|
* TODO: Add support for alternative image load mechanism e.g using virtio/elf
|
|
|
|
|
* loader etc.
|
|
|
|
|
******************************************************************************/
|
|
|
|
|
static void bl1_load_bl2(void)
|
Add descriptor based image management support in BL1
As of now BL1 loads and execute BL2 based on hard coded information
provided in BL1. But due to addition of support for upcoming Firmware
Update feature, BL1 now require more flexible approach to load and
run different images using information provided by the platform.
This patch adds new mechanism to load and execute images based on
platform provided image id's. BL1 now queries the platform to fetch
the image id of the next image to be loaded and executed. In order
to achieve this, a new struct image_desc_t was added which holds the
information about images, such as: ep_info and image_info.
This patch introduces following platform porting functions:
unsigned int bl1_plat_get_next_image_id(void);
This is used to identify the next image to be loaded
and executed by BL1.
struct image_desc *bl1_plat_get_image_desc(unsigned int image_id);
This is used to retrieve the image_desc for given image_id.
void bl1_plat_set_ep_info(unsigned int image_id,
struct entry_point_info *ep_info);
This function allows platforms to update ep_info for given
image_id.
The plat_bl1_common.c file provides default weak implementations of
all above functions, the `bl1_plat_get_image_desc()` always return
BL2 image descriptor, the `bl1_plat_get_next_image_id()` always return
BL2 image ID and `bl1_plat_set_ep_info()` is empty and just returns.
These functions gets compiled into all BL1 platforms by default.
Platform setup in BL1, using `bl1_platform_setup()`, is now done
_after_ the initialization of authentication module. This change
provides the opportunity to use authentication while doing the
platform setup in BL1.
In order to store secure/non-secure context, BL31 uses percpu_data[]
to store context pointer for each core. In case of BL1 only the
primary CPU will be active hence percpu_data[] is not required to
store the context pointer.
This patch introduce bl1_cpu_context[] and bl1_cpu_context_ptr[] to
store the context and context pointers respectively. It also also
re-defines cm_get_context() and cm_set_context() for BL1 in
bl1/bl1_context_mgmt.c.
BL1 now follows the BL31 pattern of using SP_EL0 for the C runtime
environment, to support resuming execution from a previously saved
context.
NOTE: THE `bl1_plat_set_bl2_ep_info()` PLATFORM PORTING FUNCTION IS
NO LONGER CALLED BY BL1 COMMON CODE. PLATFORMS THAT OVERRIDE
THIS FUNCTION MAY NEED TO IMPLEMENT `bl1_plat_set_ep_info()`
INSTEAD TO MAINTAIN EXISTING BEHAVIOUR.
Change-Id: Ieee4c124b951c2e9bc1c1013fa2073221195d881
9 years ago
|
|
|
{
|
|
|
|
|
image_desc_t *image_desc;
|
|
|
|
|
image_info_t *image_info;
|
|
|
|
|
int err;
|
|
|
|
|
|
|
|
|
|
/* Get the image descriptor */
|
|
|
|
|
image_desc = bl1_plat_get_image_desc(BL2_IMAGE_ID);
|
|
|
|
|
assert(image_desc != NULL);
|
Add descriptor based image management support in BL1
As of now BL1 loads and execute BL2 based on hard coded information
provided in BL1. But due to addition of support for upcoming Firmware
Update feature, BL1 now require more flexible approach to load and
run different images using information provided by the platform.
This patch adds new mechanism to load and execute images based on
platform provided image id's. BL1 now queries the platform to fetch
the image id of the next image to be loaded and executed. In order
to achieve this, a new struct image_desc_t was added which holds the
information about images, such as: ep_info and image_info.
This patch introduces following platform porting functions:
unsigned int bl1_plat_get_next_image_id(void);
This is used to identify the next image to be loaded
and executed by BL1.
struct image_desc *bl1_plat_get_image_desc(unsigned int image_id);
This is used to retrieve the image_desc for given image_id.
void bl1_plat_set_ep_info(unsigned int image_id,
struct entry_point_info *ep_info);
This function allows platforms to update ep_info for given
image_id.
The plat_bl1_common.c file provides default weak implementations of
all above functions, the `bl1_plat_get_image_desc()` always return
BL2 image descriptor, the `bl1_plat_get_next_image_id()` always return
BL2 image ID and `bl1_plat_set_ep_info()` is empty and just returns.
These functions gets compiled into all BL1 platforms by default.
Platform setup in BL1, using `bl1_platform_setup()`, is now done
_after_ the initialization of authentication module. This change
provides the opportunity to use authentication while doing the
platform setup in BL1.
In order to store secure/non-secure context, BL31 uses percpu_data[]
to store context pointer for each core. In case of BL1 only the
primary CPU will be active hence percpu_data[] is not required to
store the context pointer.
This patch introduce bl1_cpu_context[] and bl1_cpu_context_ptr[] to
store the context and context pointers respectively. It also also
re-defines cm_get_context() and cm_set_context() for BL1 in
bl1/bl1_context_mgmt.c.
BL1 now follows the BL31 pattern of using SP_EL0 for the C runtime
environment, to support resuming execution from a previously saved
context.
NOTE: THE `bl1_plat_set_bl2_ep_info()` PLATFORM PORTING FUNCTION IS
NO LONGER CALLED BY BL1 COMMON CODE. PLATFORMS THAT OVERRIDE
THIS FUNCTION MAY NEED TO IMPLEMENT `bl1_plat_set_ep_info()`
INSTEAD TO MAINTAIN EXISTING BEHAVIOUR.
Change-Id: Ieee4c124b951c2e9bc1c1013fa2073221195d881
9 years ago
|
|
|
|
|
|
|
|
/* Get the image info */
|
|
|
|
|
image_info = &image_desc->image_info;
|
|
|
|
|
INFO("BL1: Loading BL2\n");
|
|
|
|
|
|
|
|
|
|
err = bl1_plat_handle_pre_image_load(BL2_IMAGE_ID);
|
|
|
|
|
if (err) {
|
|
|
|
|
ERROR("Failure in pre image load handling of BL2 (%d)\n", err);
|
|
|
|
|
plat_error_handler(err);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
err = load_auth_image(BL2_IMAGE_ID, image_info);
|
|
|
|
|
if (err) {
|
|
|
|
|
ERROR("Failed to load BL2 firmware.\n");
|
|
|
|
|
plat_error_handler(err);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Allow platform to handle image information. */
|
|
|
|
|
err = bl1_plat_handle_post_image_load(BL2_IMAGE_ID);
|
|
|
|
|
if (err) {
|
|
|
|
|
ERROR("Failure in post image load handling of BL2 (%d)\n", err);
|
|
|
|
|
plat_error_handler(err);
|
|
|
|
|
}
|
|
|
|
|
|
Add descriptor based image management support in BL1
As of now BL1 loads and execute BL2 based on hard coded information
provided in BL1. But due to addition of support for upcoming Firmware
Update feature, BL1 now require more flexible approach to load and
run different images using information provided by the platform.
This patch adds new mechanism to load and execute images based on
platform provided image id's. BL1 now queries the platform to fetch
the image id of the next image to be loaded and executed. In order
to achieve this, a new struct image_desc_t was added which holds the
information about images, such as: ep_info and image_info.
This patch introduces following platform porting functions:
unsigned int bl1_plat_get_next_image_id(void);
This is used to identify the next image to be loaded
and executed by BL1.
struct image_desc *bl1_plat_get_image_desc(unsigned int image_id);
This is used to retrieve the image_desc for given image_id.
void bl1_plat_set_ep_info(unsigned int image_id,
struct entry_point_info *ep_info);
This function allows platforms to update ep_info for given
image_id.
The plat_bl1_common.c file provides default weak implementations of
all above functions, the `bl1_plat_get_image_desc()` always return
BL2 image descriptor, the `bl1_plat_get_next_image_id()` always return
BL2 image ID and `bl1_plat_set_ep_info()` is empty and just returns.
These functions gets compiled into all BL1 platforms by default.
Platform setup in BL1, using `bl1_platform_setup()`, is now done
_after_ the initialization of authentication module. This change
provides the opportunity to use authentication while doing the
platform setup in BL1.
In order to store secure/non-secure context, BL31 uses percpu_data[]
to store context pointer for each core. In case of BL1 only the
primary CPU will be active hence percpu_data[] is not required to
store the context pointer.
This patch introduce bl1_cpu_context[] and bl1_cpu_context_ptr[] to
store the context and context pointers respectively. It also also
re-defines cm_get_context() and cm_set_context() for BL1 in
bl1/bl1_context_mgmt.c.
BL1 now follows the BL31 pattern of using SP_EL0 for the C runtime
environment, to support resuming execution from a previously saved
context.
NOTE: THE `bl1_plat_set_bl2_ep_info()` PLATFORM PORTING FUNCTION IS
NO LONGER CALLED BY BL1 COMMON CODE. PLATFORMS THAT OVERRIDE
THIS FUNCTION MAY NEED TO IMPLEMENT `bl1_plat_set_ep_info()`
INSTEAD TO MAINTAIN EXISTING BEHAVIOUR.
Change-Id: Ieee4c124b951c2e9bc1c1013fa2073221195d881
9 years ago
|
|
|
NOTICE("BL1: Booting BL2\n");
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*******************************************************************************
|
|
|
|
|
* Function called just before handing over to the next BL to inform the user
|
|
|
|
|
* about the boot progress. In debug mode, also print details about the BL
|
|
|
|
|
* image's execution context.
|
|
|
|
|
******************************************************************************/
|
|
|
|
|
void bl1_print_next_bl_ep_info(const entry_point_info_t *bl_ep_info)
|
|
|
|
|
{
|
|
|
|
|
#ifdef __aarch64__
|
|
|
|
|
NOTICE("BL1: Booting BL31\n");
|
|
|
|
|
#else
|
|
|
|
|
NOTICE("BL1: Booting BL32\n");
|
|
|
|
|
#endif /* __aarch64__ */
|
|
|
|
|
print_entry_point_info(bl_ep_info);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
#if SPIN_ON_BL1_EXIT
|
|
|
|
|
void print_debug_loop_message(void)
|
|
|
|
|
{
|
|
|
|
|
NOTICE("BL1: Debug loop, spinning forever\n");
|
|
|
|
|
NOTICE("BL1: Please connect the debugger to continue\n");
|
|
|
|
|
}
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
/*******************************************************************************
|
|
|
|
|
* Top level handler for servicing BL1 SMCs.
|
|
|
|
|
******************************************************************************/
|
|
|
|
|
register_t bl1_smc_handler(unsigned int smc_fid,
|
|
|
|
|
register_t x1,
|
|
|
|
|
register_t x2,
|
|
|
|
|
register_t x3,
|
|
|
|
|
register_t x4,
|
|
|
|
|
void *cookie,
|
|
|
|
|
void *handle,
|
|
|
|
|
unsigned int flags)
|
|
|
|
|
{
|
|
|
|
|
|
|
|
|
|
#if TRUSTED_BOARD_BOOT
|
|
|
|
|
/*
|
|
|
|
|
* Dispatch FWU calls to FWU SMC handler and return its return
|
|
|
|
|
* value
|
|
|
|
|
*/
|
|
|
|
|
if (is_fwu_fid(smc_fid)) {
|
|
|
|
|
return bl1_fwu_smc_handler(smc_fid, x1, x2, x3, x4, cookie,
|
|
|
|
|
handle, flags);
|
|
|
|
|
}
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
switch (smc_fid) {
|
|
|
|
|
case BL1_SMC_CALL_COUNT:
|
|
|
|
|
SMC_RET1(handle, BL1_NUM_SMC_CALLS);
|
|
|
|
|
|
|
|
|
|
case BL1_SMC_UID:
|
|
|
|
|
SMC_UUID_RET(handle, bl1_svc_uid);
|
|
|
|
|
|
|
|
|
|
case BL1_SMC_VERSION:
|
|
|
|
|
SMC_RET1(handle, BL1_SMC_MAJOR_VER | BL1_SMC_MINOR_VER);
|
|
|
|
|
|
|
|
|
|
default:
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
WARN("Unimplemented BL1 SMC Call: 0x%x \n", smc_fid);
|
|
|
|
|
SMC_RET1(handle, SMC_UNK);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*******************************************************************************
|
|
|
|
|
* BL1 SMC wrapper. This function is only used in AArch32 mode to ensure ABI
|
|
|
|
|
* compliance when invoking bl1_smc_handler.
|
|
|
|
|
******************************************************************************/
|
|
|
|
|
register_t bl1_smc_wrapper(uint32_t smc_fid,
|
|
|
|
|
void *cookie,
|
|
|
|
|
void *handle,
|
|
|
|
|
unsigned int flags)
|
|
|
|
|
{
|
|
|
|
|
register_t x1, x2, x3, x4;
|
|
|
|
|
|
|
|
|
|
assert(handle != NULL);
|
|
|
|
|
|
|
|
|
|
get_smc_params_from_ctx(handle, x1, x2, x3, x4);
|
|
|
|
|
return bl1_smc_handler(smc_fid, x1, x2, x3, x4, cookie, handle, flags);
|
|
|
|
|
}
|
