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authorSubrata Banik <subratabanik@google.com>2022-01-28 02:05:15 +0530
committerSubrata Banik <subratabanik@google.com>2022-02-02 07:09:28 +0000
commit32e06732322765819e5bf54167d3159275f7dfa8 (patch)
treec5e67bf063d178ed1c6cf1c0a82b46600e38c49b /Documentation
parent736f9cced0f060a333a5efdc499607350554b9c7 (diff)
soc/intel/common/cse: Rework heci_disable function
This patch provides the possible options for SoC users to choose the applicable interface to make HECI1 function disable at pre-boot. `SOC_INTEL_COMMON_BLOCK_HECI_DISABLE_USING_SBI` config is used for disabling heci1 using non-posted sideband write (inside SMM) after FSP-S sets the postboot_sai attribute. Applicable from CNL PCH onwards. `SOC_INTEL_COMMON_BLOCK_HECI_DISABLE_USING_PMC_IPC` config is used for disabling heci1 using PMC IPC command `0xA9`. Applicable from TGL PCH onwards. `SOC_INTEL_COMMON_BLOCK_HECI_DISABLE_USING_PCR` config is used for disabling heci1 using private configuration register (PCR) write. Applicable for SoC platform prior to CNL PCH. Additionally, add PID_CSME0 macro for SKL, Xeon_SP and APL to fix the compilation failure. Finally, rename heci_disable() function to heci1_disable() to make it more meaningful. BUG=none TEST=Able to build and boot brya. Signed-off-by: Subrata Banik <subratabanik@google.com> Change-Id: I7e0bab0004013b999ec1e054310763427d7b9348 Reviewed-on: https://review.coreboot.org/c/coreboot/+/61431 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Werner Zeh <werner.zeh@siemens.com> Reviewed-by: EricR Lai <ericr_lai@compal.corp-partner.google.com>
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