vc/google/chromeos: Drop <acpi/vpd.asl>
This was used as a means to read the MAC address and dynamically return it to the ethernet driver via ACPI. The kernel team ended up going another direction so this became obsolete. Change-Id: I7065bea4b288c689b41cc969989ec6fd87c75f1f Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/49902 Reviewed-by: EricR Lai <ericr_lai@compal.corp-partner.google.com> Reviewed-by: Duncan Laurie <dlaurie@chromium.org> Reviewed-by: Furquan Shaikh <furquan@google.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Kyösti Mälkki
parent
07bce4ba36
commit
dc15505795
4 changed files with 0 additions and 225 deletions
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@ -30,9 +30,6 @@ DefinitionBlock(
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}
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}
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/* VPD support */
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#include <vendorcode/google/chromeos/acpi/vpd.asl>
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/* Chrome OS Embedded Controller */
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Scope (\_SB.PCI0.LPCB)
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{
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@ -31,11 +31,6 @@ DefinitionBlock(
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#include <variant/acpi/mainboard.asl>
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}
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#if CONFIG(CHROMEOS)
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/* VPD support */
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#include <vendorcode/google/chromeos/acpi/vpd.asl>
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#endif
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#include <southbridge/intel/common/acpi/sleepstates.asl>
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/* Chrome OS Embedded Controller */
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@ -31,11 +31,6 @@ DefinitionBlock(
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#include <variant/acpi/mainboard.asl>
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}
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#if CONFIG(CHROMEOS)
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/* VPD support */
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#include <vendorcode/google/chromeos/acpi/vpd.asl>
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#endif
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#include <southbridge/intel/common/acpi/sleepstates.asl>
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#if CONFIG(EC_GOOGLE_WILCO)
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@ -1,212 +0,0 @@
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/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* This device provides an ACPI interface to read VPD keys from either
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* the RO_VPD or RW_VPD region. For example:
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*
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* VPD.VPDF ("RO", "ro_key_name")
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* VPD.VPDF ("RW", "rw_key_name")
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*/
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Device (VPD)
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{
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Name (_HID, "GOOG000F")
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Name (_UID, 1)
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Name (_STA, 0xf)
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Name (VOFS, 0x600) /* Start of VPD header in VPD region */
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Name (VIHL, 0x10) /* Length of VPD info header */
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Name (VPET, 0x00) /* VPD Entry Type: Terminator */
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Name (VPES, 0x01) /* VPD Entry Type: String */
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Name (VPEI, 0xfe) /* VPD Entry Type: Info (header) */
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Name (MORE, 0x80) /* Bit to indicate more length bytes */
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Name (VPTR, Zero) /* Pointer to current byte in VPD for parser */
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Name (VEND, Zero) /* End of VPD region */
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/*
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* VLOC() - Return location and length of VPD region in memory.
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* These values must be initialized in GNVS by coreboot.
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*
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* Returns: Package indicating start and length of region:
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* [0] = Address of the start of VPD region.
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* [1] = Length of the VPD region.
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*/
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Method (VLOC, 1, Serialized)
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{
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Switch (ToString (Arg0))
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{
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Case ("RO") {
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Return (Package () { \ROVP, \ROVL })
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}
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Case ("RW") {
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Return (Package () { \RWVP, \RWVL })
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}
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Default {
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Return (Package () { Zero, Zero })
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}
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}
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}
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/*
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* VVPD() - Verify VPD info header.
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* Arg0: VPD partition base address.
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* Returns: VPD length or Zero if VPD header is not valid.
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*/
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Method (VVPD, 1, Serialized)
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{
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Local0 = Arg0 + ^VOFS
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OperationRegion (VPDH, SystemMemory, Local0, ^VIHL)
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Field (VPDH, DWordAcc, NoLock, Preserve)
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{
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TYPE, 8, /* VPD Header Tag (=0xfe) */
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KLEN, 8, /* Key length (=9) */
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IVER, 8, /* Info version (=1) */
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SIGN, 64, /* Signature (="gVpdInfo") */
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VLEN, 8, /* Value length (=4) */
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SIZE, 32, /* VPD length */
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}
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If (TYPE != ^VPEI) {
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Return (Zero)
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}
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If (KLEN != 9) {
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Return (Zero)
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}
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If (IVER != 1) {
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Return (Zero)
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}
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If (ToString (SIGN) != "gVpdInfo") {
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Return (Zero)
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}
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If (VLEN != 4) {
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Return (Zero)
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}
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Return (SIZE)
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}
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/* Return next byte from VPD at pointer VPTR, and increment VPTR. */
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Method (VPRB, 0, Serialized)
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{
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If (^VPTR > ^VEND) {
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Printf ("Access beyond end of VPD region")
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Return (Zero)
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}
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Local0 = ^VPTR
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OperationRegion (VPDR, SystemMemory, Local0, One)
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Field (VPDR, DWordAcc, NoLock, Preserve)
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{
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BYTE, 8,
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}
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/* Increment address pointer */
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^VPTR++
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Return (BYTE)
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}
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/* Extract and return next string from VPD. */
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Method (VPDE, 0, Serialized)
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{
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Local0 = One /* Indicates if there are more bytes */
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Local1 = Zero /* Length */
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/* Decode the string length */
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While (Local0) {
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/* Read the next byte at indicated address */
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Local2 = ^VPRB ()
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/* Update the more bit from the byte in Local2 */
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Local0 = Local2 >> 7
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/* Save the length bits from Local2 */
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Local1 <<= 7
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Local1 |= Local2 & 0x7f
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}
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If (Local1 == Zero) {
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Return (Zero)
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}
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/* Extract the string */
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Local3 = Zero
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Local4 = ""
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While (Local3 < Local1) {
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Concatenate (Local4, ToString (^VPRB ()), Local4)
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Local3++
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}
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Return (Local4)
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}
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/*
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* VPDS() - Find next VPD key and value.
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* Returns: Package containing key and value:
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* [0] = VPD key string
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* [1] = VPD value string
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*/
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Method (VPDS, 0, Serialized)
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{
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Name (VPKV, Package () { "", "" })
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/* Read the VPD type and ensure it is a string */
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If (^VPRB () != ^VPES) {
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Printf ("VPDS: Type is not a string")
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Return (VPKV)
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}
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/* Extract the key string and value */
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VPKV[0] = VPDE ()
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VPKV[1] = VPDE ()
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Return (VPKV)
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}
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/*
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* VPDF() - Find VPD key with matching name.
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* Arg0: VPD Partition, either "RO" or "RW".
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* Arg1: VPD key name to search for.
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* Returns: VPD string corresponding to VPD key, or Zero if not found.
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*/
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Method (VPDF, 2, Serialized)
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{
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Local0 = VLOC (Arg0)
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/* Start of VPD region */
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^VPTR = DerefOf (Local0[0])
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/* End address of VPD region */
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^VEND = ^VPTR + DerefOf (Local0[1])
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If (^VPTR == Zero || ^VEND == Zero) {
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Printf ("Unable to find VPD region")
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Return (Zero)
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}
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/* Verify VPD info header and save size */
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Local0 = VVPD (^VPTR)
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If (Local0 == Zero) {
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Printf ("VPD region %o did not verify", Arg0)
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Return (Zero)
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}
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/* Set VPD pointer to start of VPD entries */
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^VPTR += ^VOFS + ^VIHL
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/* Search through VPD entries until key is found */
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Local1 = ""
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While (Local1 != ToString (Arg1)) {
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Local2 = VPDS ()
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Local1 = DerefOf (Local2[0])
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If (Local1 == "") {
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Printf ("VPD KEY %o not found", Arg1)
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Return (Zero)
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}
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}
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Local3 = DerefOf (Local2[1])
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Printf ("Found VPD KEY %o = %o", Local1, Local3)
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Return (Local3)
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}
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}
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