ffbc3b5f5f
* Add chips ops for IPMI KCS.
* Get IPMI version over KCS.
* Generates ACPI SPMI table for IPMI KCS.
* Generates SMBIOS type 38 for IPMI KCS.
* Generates ACPI SPMI device for IPMI KCS on LPC device.
* Add documentation
To use this driver on BMC that support KCS on I/O:
1. Add an entry to the devicetree.cb:
chip drivers/ipmi
device pnp ca2.0 on end # IPMI KCS
end
2. Select IPMI_KCS in Kconfig.
3. (Optional) enable LPC I/O decode for the given address.
Tested on Wedge100s.
Change-Id: I73cbd2058ccdc5395baf244f31345a85eb0047d7
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/33255
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
1.4 KiB
1.4 KiB
IPMI KCS driver
The driver can be found in src/drivers/ipmi/. It works with BMC that provide
a KCS I/O interface as specified in the IPMI standard.
The driver detects the IPMI version, reserves the I/O space in coreboot's resource allocator and writes the required ACPI and SMBIOS tables.
For developers
To use the driver, select the IPMI_KCS Kconfig and add the following PNP
device under the LPC bridge device (in example for the KCS at 0xca2):
chip drivers/ipmi
device pnp ca2.0 on end # IPMI KCS
end
Note: The I/O base address needs to be aligned to 2.
The following registers can be set:
have_nv_storage- Boolean
- If true
nv_storage_device_addresswill be added to SMBIOS type 38.
nv_storage_device_address- Integer
- The NV storage address as defined in SMBIOS spec for type 38.
bmc_i2c_address- Integer
- The i2c address of the BMC. zero if not applicable.
have_apic- Boolean
- If true the
apic_interruptwill be added to SPMI table.
apic_interrupt- Integer
- The APIC interrupt used to notify about a change on the KCS.
have_gpe- Boolean
- If true the
gpe_interruptwill be added to SPMI table.
gpe_interrupt- Integer
- The bit in GPE (SCI) used to notify about a change on the KCS.