Fw update smi2 #511
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Fw update smi2 #511
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This was referenced May 24, 2024
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With DRIVERS_EFI_UPDATE_CAPSULES enabled, SMMSTORE SMI handler can use commands with highest bit (0x80) set to access whole flash instead of just the SMMSTORE region. The rest of interface is identical to regular SMMSTORE v2. Change-Id: I7f3dbfa965b9dcbade8b2f06a5bd2ac1345c7972 Signed-off-by: Krystian Hebel <krystian.hebel@3mdeb.com>
This adds a call to SMMSTORE that saves information about availability of capsules in SMM memory. This new call is ignored when run more than once, which means that there should be no way of enabling full flash handling after it was disabled and vice versa. The call should be always made by the firmware to lock further calls, otherwise OS could gain full flash access. This is done on entry to BS_POST_DEVICE, after capsules are obtained in BS_DEV_INIT. Change-Id: I3dc175ea313aae1edae304520595b82db7206cbb Signed-off-by: Krystian Hebel <krystian.hebel@3mdeb.com>
This commit adds a description of capsule update commands implemented in SMMSTORE in previous patches. Change-Id: I94761d18be567e5302d1a836f09f0a7eecb4fb00 Signed-off-by: Krystian Hebel <krystian.hebel@3mdeb.com>
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SergiiDmytruk
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Jul 4, 2024
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Depends on Dasharo/edk2#133