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doc: Update memory layout for firmware configuration area
Captured the increase in firmware configuration area from 4KB to 8kB in memory layout document. Updated the documentation to provide details about fw_config separately. Signed-off-by: Manish V Badarkhe <Manish.Badarkhe@arm.com> Change-Id: Ifbec443ced479301be65827b49ff4fe447e9109f
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@ -83,6 +83,10 @@ Each of the Boot Loader stages may be dynamically configured if required by the
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platform. The Boot Loader stage may optionally specify a firmware
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configuration file and/or hardware configuration file as listed below:
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- FW_CONFIG - The firmware configuration file. Holds properties shared across
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all BLx images.
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An example is the "dtb-registry" node, which contains the information about
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the other device tree configurations (load-address, size, image_id).
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- HW_CONFIG - The hardware configuration file. Can be shared by all Boot Loader
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stages and also by the Normal World Rich OS.
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- TB_FW_CONFIG - Trusted Boot Firmware configuration file. Shared between BL1
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@ -109,8 +113,8 @@ convention:
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the generic hardware configuration is passed the next available argument.
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For example,
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- If TB_FW_CONFIG is loaded by BL1, then its address is passed in ``arg0``
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to BL2.
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- FW_CONFIG is loaded by BL1, then its address is passed in ``arg0`` to BL2.
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- TB_FW_CONFIG address is retrieved by BL2 from FW_CONFIG device tree.
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- If HW_CONFIG is loaded by BL1, then its address is passed in ``arg2`` to
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BL2. Note, ``arg1`` is already used for meminfo_t.
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- If SOC_FW_CONFIG is loaded by BL2, then its address is passed in ``arg1``
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@ -1732,7 +1736,7 @@ CONFIG section in memory layouts shown below contains:
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``bl2_mem_params_descs`` contains parameters passed from BL2 to next the
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BL image during boot.
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``fw_configs`` includes soc_fw_config, tos_fw_config and tb_fw_config.
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``fw_configs`` includes soc_fw_config, tos_fw_config, tb_fw_config and fw_config.
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**FVP with TSP in Trusted SRAM with firmware configs :**
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(These diagrams only cover the AArch64 case)
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@ -1757,7 +1761,7 @@ BL image during boot.
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| | <<<<<<<<<<<<< | BL31 PROGBITS |
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| | <<<<<<<<<<<<< |----------------|
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| | <<<<<<<<<<<<< | BL32 |
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0x04002000 +----------+ +----------------+
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0x04003000 +----------+ +----------------+
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| CONFIG |
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0x04001000 +----------+
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| Shared |
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@ -1794,7 +1798,7 @@ BL image during boot.
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|--------------| <<<<<<<<<<<<< |----------------|
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| | <<<<<<<<<<<<< | BL31 PROGBITS |
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| | +----------------+
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+--------------+
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0x04003000 +--------------+
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| CONFIG |
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0x04001000 +--------------+
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| Shared |
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@ -1828,7 +1832,7 @@ BL image during boot.
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|----------| <<<<<<<<<<<<< |----------------|
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| | <<<<<<<<<<<<< | BL31 PROGBITS |
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| | +----------------+
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0x04002000 +----------+
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0x04003000 +----------+
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| CONFIG |
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0x04001000 +----------+
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| Shared |
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