soc/intel/tigerlake: Add config option for S3 ACPI
Add Kconfig option `SOC_INTEL_TIGERLAKE_S3` which will adjust the ACPI to not offer D3Cold when using S3. Signed-off-by: Sean Rhodes <sean@starlabs.systems> Change-Id: Ieb1cc3d6a03cb452ff38ae393a993e881d9b5ff4 Reviewed-on: https://review.coreboot.org/c/coreboot/+/59024 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
This commit is contained in:
Sean Rhodes
committed by
Tim Wawrzynczak
Tim Wawrzynczak
parent
e72e857168
commit
5622666396
@@ -41,6 +41,12 @@
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Scope (\_SB)
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{
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#if CONFIG(SOC_INTEL_TIGERLAKE_S3)
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Name (S0IX, 0)
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#else
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Name (S0IX, 1)
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#endif
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/* Device base address */
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Method (BASE, 1)
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{
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@@ -673,116 +679,118 @@ Scope (\_SB.PCI0)
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}
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}
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Method (TCON, 0)
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{
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/* Reset IOM D3 cold bit if it is in D3 cold now. */
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If (TD3C == 1) /* It was in D3 cold before. */
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If (S0IX == 1) {
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Method (TCON, 0)
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{
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/* Reset IOM D3 cold bit. */
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TD3C = 0 /* Request IOM for D3 cold exit sequence. */
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Local0 = 0 /* Time check counter variable */
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/* Wait for ack, the maximum wait time for the ack is 100 msec. */
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While ((TACK != 0) && (Local0 < TCSS_IOM_ACK_TIMEOUT_IN_MS)) {
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/*
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* Wait in this loop until TACK becomes 0 with timeout
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* TCSS_IOM_ACK_TIMEOUT_IN_MS by default.
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*/
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Sleep (1) /* Delay of 1ms. */
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Local0++
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}
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If (Local0 == TCSS_IOM_ACK_TIMEOUT_IN_MS) {
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Printf("Error: Timeout occurred.")
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}
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Else
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/* Reset IOM D3 cold bit if it is in D3 cold now. */
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If (TD3C == 1) /* It was in D3 cold before. */
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{
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/*
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* Program IOP MCTP Drop (TCSS_IN_D3) after D3 cold exit and
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* acknowledgement by IOM.
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*/
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TCD3 = 0
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/*
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* If the TCSS Deven is cleared by BIOS Mailbox request, then
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* restore to previously saved value of TCSS DEVNE.
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*/
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Local0 = 0
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While (\_SB.PCI0.TXHC.VDID == 0xFFFFFFFF) {
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If (DSGS () == 1) {
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DSCR (0)
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}
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/* Reset IOM D3 cold bit. */
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TD3C = 0 /* Request IOM for D3 cold exit sequence. */
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Local0 = 0 /* Time check counter variable */
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/* Wait for ack, the maximum wait time for the ack is 100 msec. */
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While ((TACK != 0) && (Local0 < TCSS_IOM_ACK_TIMEOUT_IN_MS)) {
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/*
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* Wait in this loop until TACK becomes 0 with timeout
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* TCSS_IOM_ACK_TIMEOUT_IN_MS by default.
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*/
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Sleep (1) /* Delay of 1ms. */
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Local0++
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If (Local0 == 5) {
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Printf("pCode mailbox command failed.")
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Break
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}
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If (Local0 == TCSS_IOM_ACK_TIMEOUT_IN_MS) {
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Printf("Error: Timeout occurred.")
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}
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Else
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{
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/*
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* Program IOP MCTP Drop (TCSS_IN_D3) after D3 cold exit and
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* acknowledgement by IOM.
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*/
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TCD3 = 0
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/*
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* If the TCSS Deven is cleared by BIOS Mailbox request, then
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* restore to previously saved value of TCSS DEVNE.
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*/
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Local0 = 0
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While (\_SB.PCI0.TXHC.VDID == 0xFFFFFFFF) {
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If (DSGS () == 1) {
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DSCR (0)
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}
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Local0++
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If (Local0 == 5) {
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Printf("pCode mailbox command failed.")
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Break
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}
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}
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}
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}
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}
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Else {
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Printf("Drop TCON due to it is already exit D3 cold.")
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}
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}
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Method (TCOF, 0)
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{
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If ((\_SB.PCI0.TXHC.SD3C != 0) || (\_SB.PCI0.TDM0.SD3C != 0)
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|| (\_SB.PCI0.TDM1.SD3C != 0))
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{
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Printf("Skip D3C entry.")
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Return
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}
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/*
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* If the TCSS Deven in normal state, then Save current TCSS DEVEN value and
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* clear it.
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*/
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Local0 = 0
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While (\_SB.PCI0.TXHC.VDID != 0xFFFFFFFF) {
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If (DSGS () == 0) {
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DSCR (1)
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}
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Local0++
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If (Local0 == 5) {
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Printf("pCode mailbox command failed.")
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Break
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Else {
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Printf("Drop TCON due to it is already exit D3 cold.")
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}
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}
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/*
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* Program IOM MCTP Drop (TCSS_IN_D3) in D3Cold entry before entering D3 cold.
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*/
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TCD3 = 1
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/* Request IOM for D3 cold entry sequence. */
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TD3C = 1
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}
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PowerResource (D3C, 5, 0)
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{
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/*
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* Variable to save power state
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* 1 - TC Cold request cleared.
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* 0 - TC Cold request sent.
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*/
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Name (STAT, 0x1)
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Method (_STA, 0)
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Method (TCOF, 0)
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{
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Return (STAT)
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If ((\_SB.PCI0.TXHC.SD3C != 0) || (\_SB.PCI0.TDM0.SD3C != 0)
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|| (\_SB.PCI0.TDM1.SD3C != 0))
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{
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Printf("Skip D3C entry.")
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Return
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}
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/*
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* If the TCSS Deven in normal state, then Save current TCSS DEVEN value and
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* clear it.
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*/
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Local0 = 0
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While (\_SB.PCI0.TXHC.VDID != 0xFFFFFFFF) {
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If (DSGS () == 0) {
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DSCR (1)
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}
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Local0++
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If (Local0 == 5) {
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Printf("pCode mailbox command failed.")
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Break
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}
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}
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/*
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* Program IOM MCTP Drop (TCSS_IN_D3) in D3Cold entry before entering D3 cold.
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*/
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TCD3 = 1
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/* Request IOM for D3 cold entry sequence. */
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TD3C = 1
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}
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Method (_ON, 0)
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PowerResource (D3C, 5, 0)
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{
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\_SB.PCI0.TCON()
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STAT = 1
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}
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/*
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* Variable to save power state
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* 1 - TC Cold request cleared.
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* 0 - TC Cold request sent.
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*/
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Name (STAT, 0x1)
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Method (_OFF, 0)
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{
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\_SB.PCI0.TCOF()
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STAT = 0
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Method (_STA, 0)
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{
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Return (STAT)
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}
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Method (_ON, 0)
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{
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\_SB.PCI0.TCON()
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STAT = 1
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}
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Method (_OFF, 0)
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{
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\_SB.PCI0.TCOF()
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STAT = 0
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}
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}
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}
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} /* End: S0IX */
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/*
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* TCSS xHCI device
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