src: Drop useless GPE1 settings from FADT

None of the currently-supported chips has a GPE1 block. The ACPI spec,
version 6.3, section 4.8.1.6 (General-Purpose Event Registers) says:

 If a generic register block is not supported then its respective
 block pointer and block length values in the FADT table contain zeros.

Since the FADT struct defaults to zero in coreboot, we don't need to do
anything with GPE1 for now. So, drop the unneeded writes to GPE1 fields.

Tested on Asus P8Z77-V LX2 with Linux 5.7.6 and Windows 10 at the end of
the patch train, both operating systems are able to boot successfully.

Change-Id: Iefc4bbc6e16fac12e0a9324d5a50b20aad59a6cd
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/43379
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
Reviewed-by: Michael Niewöhner
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

8 files changed, 0 insertions, 82 deletions

diff --git a/src/soc/intel/baytrail/fadt.c b/src/soc/intel/baytrail/fadt.c
index 80e287ddbe..4e57b3ca50 100644
--- a/src/soc/intel/baytrail/fadt.c
+++ b/src/soc/intel/baytrail/fadt.c
@@ -26,15 +26,12 @@ void acpi_fill_fadt(acpi_fadt_t *fadt)
 	fadt->pm2_cnt_blk = pmbase + PM2A_CNT_BLK;
 	fadt->pm_tmr_blk = pmbase + PM1_TMR;
 	fadt->gpe0_blk = pmbase + GPE0_STS;
-	fadt->gpe1_blk = 0;
 
 	fadt->pm1_evt_len = 4;
 	fadt->pm1_cnt_len = 2;
 	fadt->pm2_cnt_len = 1;
 	fadt->pm_tmr_len = 4;
 	fadt->gpe0_blk_len = 2 * (GPE0_EN - GPE0_STS);
-	fadt->gpe1_blk_len = 0;
-	fadt->gpe1_base = 0;
 	fadt->p_lvl2_lat = 1;
 	fadt->p_lvl3_lat = 87;
 	fadt->flush_size = 1024;
@@ -113,11 +110,4 @@ void acpi_fill_fadt(acpi_fadt_t *fadt)
 	fadt->x_gpe0_blk.access_size = ACPI_ACCESS_SIZE_BYTE_ACCESS;
 	fadt->x_gpe0_blk.addrl = pmbase + GPE0_STS;
 	fadt->x_gpe0_blk.addrh = 0x0;
-
-	fadt->x_gpe1_blk.space_id = 1;
-	fadt->x_gpe1_blk.bit_width = 0;
-	fadt->x_gpe1_blk.bit_offset = 0;
-	fadt->x_gpe1_blk.access_size = 0;
-	fadt->x_gpe1_blk.addrl = 0x0;
-	fadt->x_gpe1_blk.addrh = 0x0;
 }
diff --git a/src/soc/intel/braswell/fadt.c b/src/soc/intel/braswell/fadt.c
index 80e287ddbe..4e57b3ca50 100644
--- a/src/soc/intel/braswell/fadt.c
+++ b/src/soc/intel/braswell/fadt.c
@@ -26,15 +26,12 @@ void acpi_fill_fadt(acpi_fadt_t *fadt)
 	fadt->pm2_cnt_blk = pmbase + PM2A_CNT_BLK;
 	fadt->pm_tmr_blk = pmbase + PM1_TMR;
 	fadt->gpe0_blk = pmbase + GPE0_STS;
-	fadt->gpe1_blk = 0;
 
 	fadt->pm1_evt_len = 4;
 	fadt->pm1_cnt_len = 2;
 	fadt->pm2_cnt_len = 1;
 	fadt->pm_tmr_len = 4;
 	fadt->gpe0_blk_len = 2 * (GPE0_EN - GPE0_STS);
-	fadt->gpe1_blk_len = 0;
-	fadt->gpe1_base = 0;
 	fadt->p_lvl2_lat = 1;
 	fadt->p_lvl3_lat = 87;
 	fadt->flush_size = 1024;
@@ -113,11 +110,4 @@ void acpi_fill_fadt(acpi_fadt_t *fadt)
 	fadt->x_gpe0_blk.access_size = ACPI_ACCESS_SIZE_BYTE_ACCESS;
 	fadt->x_gpe0_blk.addrl = pmbase + GPE0_STS;
 	fadt->x_gpe0_blk.addrh = 0x0;
-
-	fadt->x_gpe1_blk.space_id = 1;
-	fadt->x_gpe1_blk.bit_width = 0;
-	fadt->x_gpe1_blk.bit_offset = 0;
-	fadt->x_gpe1_blk.access_size = 0;
-	fadt->x_gpe1_blk.addrl = 0x0;
-	fadt->x_gpe1_blk.addrh = 0x0;
 }
diff --git a/src/soc/intel/broadwell/fadt.c b/src/soc/intel/broadwell/fadt.c
index 614888097b..650a512880 100644
--- a/src/soc/intel/broadwell/fadt.c
+++ b/src/soc/intel/broadwell/fadt.c
@@ -25,15 +25,12 @@ void acpi_fill_fadt(acpi_fadt_t *fadt)
 	fadt->pm2_cnt_blk = pmbase + PM2_CNT;
 	fadt->pm_tmr_blk = pmbase + PM1_TMR;
 	fadt->gpe0_blk = pmbase + GPE0_STS(0);
-	fadt->gpe1_blk = 0;
 
 	fadt->pm1_evt_len = 4;
 	fadt->pm1_cnt_len = 2;
 	fadt->pm2_cnt_len = 1;
 	fadt->pm_tmr_len = 4;
 	fadt->gpe0_blk_len = 32;
-	fadt->gpe1_blk_len = 0;
-	fadt->gpe1_base = 0;
 	fadt->p_lvl2_lat = 1;
 	fadt->p_lvl3_lat = 87;
 	fadt->flush_size = 1024;
@@ -112,12 +109,4 @@ void acpi_fill_fadt(acpi_fadt_t *fadt)
 	fadt->x_gpe0_blk.access_size = ACPI_ACCESS_SIZE_BYTE_ACCESS;
 	fadt->x_gpe0_blk.addrl = fadt->gpe0_blk;
 	fadt->x_gpe0_blk.addrh = 0;
-
-
-	fadt->x_gpe1_blk.space_id = 1;
-	fadt->x_gpe1_blk.bit_width = 0;
-	fadt->x_gpe1_blk.bit_offset = 0;
-	fadt->x_gpe1_blk.access_size = 0;
-	fadt->x_gpe1_blk.addrl = 0x0;
-	fadt->x_gpe1_blk.addrh = 0x0;
 }
diff --git a/src/soc/intel/common/block/acpi/acpi.c b/src/soc/intel/common/block/acpi/acpi.c
index 05d14ecd70..96f654e975 100644
--- a/src/soc/intel/common/block/acpi/acpi.c
+++ b/src/soc/intel/common/block/acpi/acpi.c
@@ -159,8 +159,6 @@ void acpi_fill_fadt(acpi_fadt_t *fadt)
 	fadt->x_gpe0_blk.access_size = ACPI_ACCESS_SIZE_BYTE_ACCESS;
 	fadt->x_gpe0_blk.addrl = fadt->gpe0_blk;
 	fadt->x_gpe0_blk.addrh = 0;
-
-	fadt->x_gpe1_blk.space_id = 1;
 }
 
 unsigned long southbridge_write_acpi_tables(const struct device *device,
diff --git a/src/soc/intel/denverton_ns/acpi.c b/src/soc/intel/denverton_ns/acpi.c
index 92a9c2a771..7d2d759032 100644
--- a/src/soc/intel/denverton_ns/acpi.c
+++ b/src/soc/intel/denverton_ns/acpi.c
@@ -121,14 +121,11 @@ void soc_fill_fadt(acpi_fadt_t *fadt)
 	/* Power Control */
 	fadt->pm2_cnt_blk = pmbase + PM2_CNT;
 	fadt->pm_tmr_blk = pmbase + PM1_TMR;
-	fadt->gpe1_blk = 0;
 
 	/* Control Registers - Length */
 	fadt->pm2_cnt_len = 1;
 	fadt->pm_tmr_len = 4;
 	fadt->gpe0_blk_len = 8;
-	fadt->gpe1_blk_len = 0;
-	fadt->gpe1_base = 0;
 
 	fadt->p_lvl2_lat = ACPI_FADT_C2_NOT_SUPPORTED;
 	fadt->p_lvl3_lat = ACPI_FADT_C3_NOT_SUPPORTED;
@@ -210,13 +207,6 @@ void soc_fill_fadt(acpi_fadt_t *fadt)
 	fadt->x_gpe0_blk.access_size = ACPI_ACCESS_SIZE_BYTE_ACCESS;
 	fadt->x_gpe0_blk.addrl = fadt->gpe0_blk;
 	fadt->x_gpe0_blk.addrh = 0x00;
-
-	fadt->x_gpe1_blk.space_id = ACPI_ADDRESS_SPACE_IO;
-	fadt->x_gpe1_blk.bit_width = 0;
-	fadt->x_gpe1_blk.bit_offset = 0;
-	fadt->x_gpe1_blk.access_size = 0;
-	fadt->x_gpe1_blk.addrl = fadt->gpe1_blk;
-	fadt->x_gpe1_blk.addrh = 0x00;
 }
 
 static acpi_tstate_t denverton_tss_table[] = {
diff --git a/src/soc/intel/skylake/fadt.c b/src/soc/intel/skylake/fadt.c
index 39149691b2..0103f4e2b0 100644
--- a/src/soc/intel/skylake/fadt.c
+++ b/src/soc/intel/skylake/fadt.c
@@ -28,7 +28,6 @@ void acpi_fill_fadt(acpi_fadt_t *fadt)
 	fadt->pm2_cnt_blk = pmbase + PM2_CNT;
 	fadt->pm_tmr_blk = pmbase + PM1_TMR;
 	fadt->gpe0_blk = pmbase + GPE0_STS(0);
-	fadt->gpe1_blk = 0;
 
 	fadt->pm1_evt_len = 4;
 	fadt->pm1_cnt_len = 2;
@@ -36,8 +35,6 @@ void acpi_fill_fadt(acpi_fadt_t *fadt)
 	fadt->pm_tmr_len = 4;
 	/* There are 4 GPE0 STS/EN pairs each 32 bits wide. */
 	fadt->gpe0_blk_len = 2 * GPE0_REG_MAX * sizeof(uint32_t);
-	fadt->gpe1_blk_len = 0;
-	fadt->gpe1_base = 0;
 	fadt->p_lvl2_lat = 1;
 	fadt->p_lvl3_lat = 87;
 	fadt->flush_size = 1024;
@@ -121,11 +118,4 @@ void acpi_fill_fadt(acpi_fadt_t *fadt)
 	fadt->x_gpe0_blk.access_size = ACPI_ACCESS_SIZE_BYTE_ACCESS;
 	fadt->x_gpe0_blk.addrl = fadt->gpe0_blk;
 	fadt->x_gpe0_blk.addrh = 0;
-
-	fadt->x_gpe1_blk.space_id = 1;
-	fadt->x_gpe1_blk.bit_width = 0;
-	fadt->x_gpe1_blk.bit_offset = 0;
-	fadt->x_gpe1_blk.access_size = 0;
-	fadt->x_gpe1_blk.addrl = 0x0;
-	fadt->x_gpe1_blk.addrh = 0x0;
 }
diff --git a/src/soc/intel/xeon_sp/cpx/acpi.c b/src/soc/intel/xeon_sp/cpx/acpi.c
index c554977e22..c02fb70434 100644
--- a/src/soc/intel/xeon_sp/cpx/acpi.c
+++ b/src/soc/intel/xeon_sp/cpx/acpi.c
@@ -321,8 +321,6 @@ void acpi_fill_fadt(acpi_fadt_t *fadt)
 
 	fadt->x_pm1b_cnt_blk.space_id = 1;
 
-	fadt->x_gpe1_blk.space_id = 1;
-
 	if (permanent_smi_handler()) {
 		fadt->smi_cmd = APM_CNT;
 		fadt->acpi_enable = APM_CNT_ACPI_ENABLE;
@@ -336,13 +334,6 @@ void acpi_fill_fadt(acpi_fadt_t *fadt)
 	fadt->x_gpe0_blk.access_size = ACPI_ACCESS_SIZE_BYTE_ACCESS;
 	fadt->x_gpe0_blk.addrl = fadt->gpe0_blk;
 	fadt->x_gpe0_blk.addrh = 0;
-
-	fadt->x_gpe1_blk.space_id = ACPI_ADDRESS_SPACE_IO;
-	fadt->x_gpe1_blk.bit_width = 0;
-	fadt->x_gpe1_blk.bit_offset = 0;
-	fadt->x_gpe1_blk.access_size = 0;
-	fadt->x_gpe1_blk.addrl = 0;
-	fadt->x_gpe1_blk.addrh = 0;
 }
 
 unsigned long acpi_create_srat_lapics(unsigned long current)
diff --git a/src/soc/intel/xeon_sp/skx/acpi.c b/src/soc/intel/xeon_sp/skx/acpi.c
index 903fc732cd..8999312a94 100644
--- a/src/soc/intel/xeon_sp/skx/acpi.c
+++ b/src/soc/intel/xeon_sp/skx/acpi.c
@@ -228,15 +228,12 @@ void soc_fill_fadt(acpi_fadt_t *fadt)
 	/* Power Control */
 	fadt->pm2_cnt_blk = pmbase + PM2_CNT;
 	fadt->pm_tmr_blk = pmbase + PM1_TMR;
-	fadt->gpe1_blk = 0;
 
 	/* Control Registers - Length */
 	fadt->pm2_cnt_len = 1;
 	fadt->pm_tmr_len = 4;
 	/* There are 4 GPE0 STS/EN pairs each 32 bits wide. */
 	fadt->gpe0_blk_len = 2 * GPE0_REG_MAX * sizeof(uint32_t);
-	fadt->gpe1_blk_len = 0;
-	fadt->gpe1_base = 0;
 	fadt->p_lvl2_lat = ACPI_FADT_C2_NOT_SUPPORTED;
 	fadt->p_lvl3_lat = ACPI_FADT_C3_NOT_SUPPORTED;
 	fadt->flush_size = 0;   /* set to 0 if WBINVD is 1 in flags */
@@ -317,13 +314,6 @@ void soc_fill_fadt(acpi_fadt_t *fadt)
 	fadt->x_gpe0_blk.access_size = ACPI_ACCESS_SIZE_BYTE_ACCESS;
 	fadt->x_gpe0_blk.addrl = fadt->gpe0_blk;
 	fadt->x_gpe0_blk.addrh = 0x00;
-
-	fadt->x_gpe1_blk.space_id = ACPI_ADDRESS_SPACE_IO;
-	fadt->x_gpe1_blk.bit_width = 0;
-	fadt->x_gpe1_blk.bit_offset = 0;
-	fadt->x_gpe1_blk.access_size = 0;
-	fadt->x_gpe1_blk.addrl = fadt->gpe1_blk;
-	fadt->x_gpe1_blk.addrh = 0x00;
 }
 
 void acpi_fill_fadt(acpi_fadt_t *fadt)
@@ -348,7 +338,6 @@ void acpi_fill_fadt(acpi_fadt_t *fadt)
 	fadt->pm2_cnt_blk = pmbase + PM2_CNT;
 	fadt->pm_tmr_blk = pmbase + PM1_TMR;
 	fadt->gpe0_blk = pmbase + GPE0_STS(0);
-	fadt->gpe1_blk = 0;
 
 	fadt->pm1_evt_len = 4;
 	fadt->pm1_cnt_len = 2;
@@ -356,8 +345,6 @@ void acpi_fill_fadt(acpi_fadt_t *fadt)
 	fadt->pm_tmr_len = 4;
 	/* There are 4 GPE0 STS/EN pairs each 32 bits wide. */
 	fadt->gpe0_blk_len = 2 * GPE0_REG_MAX * sizeof(uint32_t);
-	fadt->gpe1_blk_len = 0;
-	fadt->gpe1_base = 0;
 	fadt->p_lvl2_lat = 1;
 	fadt->p_lvl3_lat = 87;
 	fadt->flush_size = 1024;
@@ -432,13 +419,6 @@ void acpi_fill_fadt(acpi_fadt_t *fadt)
 	fadt->x_gpe0_blk.access_size = ACPI_ACCESS_SIZE_BYTE_ACCESS;
 	fadt->x_gpe0_blk.addrl = fadt->gpe0_blk;
 	fadt->x_gpe0_blk.addrh = 0;
-
-	fadt->x_gpe1_blk.space_id = 1;
-	fadt->x_gpe1_blk.bit_width = 0;
-	fadt->x_gpe1_blk.bit_offset = 0;
-	fadt->x_gpe1_blk.access_size = 0;
-	fadt->x_gpe1_blk.addrl = 0x0;
-	fadt->x_gpe1_blk.addrh = 0x0;
 }
 
 static acpi_tstate_t xeon_sp_tss_table[] = {