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docs: remove redundant Measured Boot interface info
A separate design document for Measured Boot covers the porting guidelines for the Measured Boot interfaces. As a result, the Measured Boot interfaces have been removed from the porting guide and a link to the Measured Boot design document has been provided. Change-Id: Ia6bd2620d830aea6aececab4af7e10a6d737f025 Signed-off-by: Manish V Badarkhe <Manish.Badarkhe@arm.com>
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Manish V Badarkhe
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1 changed files with 6 additions and 109 deletions
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@ -1509,43 +1509,6 @@ This function returns SMC_ARCH_CALL_SUCCESS if the platform supports
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the SMCCC function specified in the argument; otherwise returns
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the SMCCC function specified in the argument; otherwise returns
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SMC_ARCH_CALL_NOT_SUPPORTED.
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SMC_ARCH_CALL_NOT_SUPPORTED.
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Function : plat_mboot_measure_image()
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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::
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Argument : unsigned int, image_info_t *
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Return : int
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When the MEASURED_BOOT flag is enabled:
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- This function measures the given image and records its measurement using
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the measured boot backend driver.
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- On the Arm FVP port, this function measures the given image using its
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passed id and information and then records that measurement in the
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Event Log buffer.
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- This function must return 0 on success, a signed integer error code
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otherwise.
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When the MEASURED_BOOT flag is disabled, this function doesn't do anything.
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Function : plat_mboot_measure_critical_data()
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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::
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Argument : unsigned int, const void *, size_t
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Return : int
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When the MEASURED_BOOT flag is enabled:
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- This function measures the given critical data structure and records its
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measurement using the measured boot backend driver.
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- This function must return 0 on success, a signed integer error code
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otherwise.
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When the MEASURED_BOOT flag is disabled, this function doesn't do anything.
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Function : plat_can_cmo()
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Function : plat_can_cmo()
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~~~~~~~~~~~~~~~~~~~~~~~~~
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~~~~~~~~~~~~~~~~~~~~~~~~~
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@ -1813,42 +1776,6 @@ This function must return 0 on success, a non-null error code otherwise.
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The default implementation of this function asserts therefore platforms must
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The default implementation of this function asserts therefore platforms must
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override it when using the FWU feature.
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override it when using the FWU feature.
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Function : bl1_plat_mboot_init() [optional]
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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::
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Argument : void
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Return : void
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When the MEASURED_BOOT flag is enabled:
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- This function is used to initialize the backend driver(s) of measured boot.
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- On the Arm FVP port, this function is used to initialize the Event Log
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backend driver, and also to write header information in the Event Log buffer.
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When the MEASURED_BOOT flag is disabled, this function doesn't do anything.
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Function : bl1_plat_mboot_finish() [optional]
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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::
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Argument : void
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Return : void
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When the MEASURED_BOOT flag is enabled:
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- This function is used to finalize the measured boot backend driver(s),
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and also, set the information for the next bootloader component to
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extend the measurement if needed.
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- On the Arm FVP port, this function is used to pass the base address of
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the Event Log buffer and its size to BL2 via tb_fw_config to extend the
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Event Log buffer with the measurement of various images loaded by BL2.
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It results in panic on error.
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When the MEASURED_BOOT flag is disabled, this function doesn't do anything.
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Boot Loader Stage 2 (BL2)
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Boot Loader Stage 2 (BL2)
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-------------------------
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-------------------------
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@ -1980,42 +1907,6 @@ element in the boot sequence. If there are no more boot sources then it
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must return 0, otherwise it must return 1. The default implementation
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must return 0, otherwise it must return 1. The default implementation
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of this always returns 0.
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of this always returns 0.
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Function : bl2_plat_mboot_init() [optional]
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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::
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Argument : void
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Return : void
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When the MEASURED_BOOT flag is enabled:
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- This function is used to initialize the backend driver(s) of measured boot.
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- On the Arm FVP port, this function is used to initialize the Event Log
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backend driver with the Event Log buffer information (base address and
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size) received from BL1. It results in panic on error.
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When the MEASURED_BOOT flag is disabled, this function doesn't do anything.
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Function : bl2_plat_mboot_finish() [optional]
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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::
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Argument : void
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Return : void
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When the MEASURED_BOOT flag is enabled:
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- This function is used to finalize the measured boot backend driver(s),
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and also, set the information for the next bootloader component to extend
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the measurement if needed.
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- On the Arm FVP port, this function is used to pass the Event Log buffer
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information (base address and size) to non-secure(BL33) and trusted OS(BL32)
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via nt_fw and tos_fw config respectively. It results in panic on error.
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When the MEASURED_BOOT flag is disabled, this function doesn't do anything.
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Boot Loader Stage 2 (BL2) at EL3
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Boot Loader Stage 2 (BL2) at EL3
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--------------------------------
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--------------------------------
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@ -3664,6 +3555,12 @@ by the drivers and callers, as the system does not yet provide a means of
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dynamically allocating memory. This may also have the affect of limiting the
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dynamically allocating memory. This may also have the affect of limiting the
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amount of open resources per driver.
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amount of open resources per driver.
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Measured Boot Platform Interface
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--------------------------------
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Enabling the MEASURED_BOOT flag adds extra platform requirements. Please refer
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to :ref:`Measured Boot Design` for more details.
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--------------
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--------------
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*Copyright (c) 2013-2023, Arm Limited and Contributors. All rights reserved.*
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*Copyright (c) 2013-2023, Arm Limited and Contributors. All rights reserved.*
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