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soc/intel/common/acpi: Add IOE PS2B access APIs 

This patch implements APIs to access PCR registers from IOE die.

BUG=b:290856936
TEST=Able to build and boot google/rex.

Change-Id: Ief7a00c4e81048f87ee308e659faeba3fde4c9cd
Signed-off-by: Subrata Banik <subratabanik@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/76409
Reviewed-by: Kapil Porwal <kapilporwal@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Werner Zeh <werner.zeh@siemens.com>
This commit is contained in:
Subrata Banik 2023-07-12 11:35:01 +05:30
parent 5557fbe406
commit 649709c6fc
2 changed files with 53 additions and 3 deletions
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46
src/soc/intel/common/acpi/ioe_pcr.asl Normal file
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@ -0,0 +1,46 @@
/* SPDX-License-Identifier: GPL-2.0-only */
#include "pcrlib.asl"
/* APIs to access P2SB inside IOE die */
/*
* Calculate PCR register base at specified PID
* Arg0 - PCR Port ID
*/
Method (ICRB, 1, NotSerialized)
{
Return (GPCR(IOE_P2SB, Arg0))
}
/*
* Read a PCR register at specified PID and offset
* Arg0 - PCR Port ID
* Arg1 - Register Offset
*/
Method (ICRR, 2, Serialized)
{
Return (RPCR(IOE_P2SB, Arg0, Arg1))
}
/*
* AND a value with PCR register at specified PID and offset
* Arg0 - PCR Port ID
* Arg1 - Register Offset
* Arg2 - Value to AND
*/
Method (ICRA, 3, Serialized)
{
APCR(IOE_P2SB, Arg0, Arg1, Arg2)
}
/*
* OR a value with PCR register at specified PID and offset
* Arg0 - PCR Port ID
* Arg1 - Register Offset
* Arg2 - Value to OR
*/
Method (ICRO, 3, Serialized)
{
OPCR(IOE_P2SB, Arg0, Arg1, Arg2)
}

10
src/soc/intel/common/acpi/pcrlib.asl
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@ -8,7 +8,7 @@
/* Die Index */
#define PCH_P2SB 0x00
/* TODO: Add index for P2SB which belongs to IOE Die" */
#define IOE_P2SB 0x01
/*
* Get PCR register base for specified Die at given PID
@ -20,8 +20,12 @@ Method (GPCR, 2, NotSerialized)
if (Arg0 == PCH_P2SB) {
Local0 = CONFIG_PCR_BASE_ADDRESS;
} else {
Printf ("Invalid Die index (%o)\n", Arg0)
Return (0)
if (Arg0 == IOE_P2SB) {
Local0 = CONFIG_IOE_PCR_BASE_ADDRESS;
} else {
Printf ("Invalid Die index (%o)\n", Arg0)
Return (0)
}
}
Return (Local0 + (Arg1 << PCR_PORTID_SHIFT))