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This change adds support to lock down the DMI configuration
in dmi_lockdown_cfg() by setting Secure Register Lock (SRL)
bit in DMI control register.
BUG=b:171534504
Signed-off-by: Srinidhi N Kaushik <srinidhi.n.kaushik@intel.com>
Change-Id: I98a82ce4a2f73f8a1504e5ddf77ff2e81ae3f53f
Reviewed-on: https://review.coreboot.org/c/coreboot/+/48258
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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Move definitions of DMI control register and Secure Register
Lock (SRL) bit into common/block/dmi driver header file.
BUG=b:171534504
Signed-off-by: Srinidhi N Kaushik <srinidhi.n.kaushik@intel.com>
Change-Id: Iefee818f58f399d4a127662a300b6e132494bad0
Reviewed-on: https://review.coreboot.org/c/coreboot/+/48257
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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This change allows configuring the General Purpose
Memory Range(GPMR) register in BIOS to set up the decoding in DMI.
This driver provides the following functionality:
1. Add a helper function dmi_enable_gpmr which takes as input base,
limit and destination ID to configure in general purpose memory range
registers and then set the GPMR registers in the next available
free GMPR and enable the decoding.
2. Add helper function get_available_gpmr which returns available free
GPMR.
3. This helper function can be utilized by the fast SPI driver to
configure the window for the extended BIOS region.
BUG=b:171534504
Signed-off-by: Srinidhi N Kaushik <srinidhi.n.kaushik@intel.com>
Change-Id: I34a894e295ecb98fbc4a81282361e851c436a403
Reviewed-on: https://review.coreboot.org/c/coreboot/+/47988
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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