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driver/intel/ish: add ish chip driver support

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We want to be able to specify the firmware variant suffix
in the devicetree.cb configuration for particular firmware
builds. This driver allows us to specify the firmware_variant
property in the device tree and have it populate a _DST table
in the SSDT ACPI table for the ISH device, thus making the
suffix available to the kernel (See crrev.com/c/1433482 for kernel
change that uses the value)

BUG=b:122722008
TEST=decompile DDST table and verify that new firmware-variant value
is present. Also verfied that kernel can access this new field using
the shim loader kernel CLs

Change-Id: Id8be986185282521aee574027503eaf8968e1508
Signed-off-by: Jett Rink <jettrink@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/31682
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
This commit is contained in:
Jett Rink
2019-03-01 10:20:34 -07:00
committed by Patrick Georgi
parent 4e8dee51e3
commit 6bdfc8027b
5 changed files with 110 additions and 0 deletions
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1
src/include/device/pci_ids.h
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@@ -2091,6 +2091,7 @@
#define PCI_DEVICE_ID_INTEL_80960_RP 0x1960
#define PCI_DEVICE_ID_INTEL_82437VX 0x7030
#define PCI_DEVICE_ID_INTEL_82439TX 0x7100
#define PCI_DEVICE_ID_INTEL_CNL_ISHB 0x9dfc
/* Intel 82371FB (PIIX) */
#define PCI_DEVICE_ID_INTEL_82371FB_ISA 0x122e