arch/x86/acpi: Remove obsolete acpi_gen_regaddr resv field

Since ACPI v2.c, this field is access_size.
Currently, coreboot is using ACPI v3,so we can drop '.resv' field.

Change-Id: I7b3b930861669bb05cdc8e81f6502476a0568fe0
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/31701
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>

34 files changed, 196 insertions, 211 deletions

diff --git a/src/arch/x86/acpigen.c b/src/arch/x86/acpigen.c
index 0eacf05d8e..3f9f99422d 100644
--- a/src/arch/x86/acpigen.c
+++ b/src/arch/x86/acpigen.c
@@ -580,14 +580,12 @@ void acpigen_write_empty_PTC(void)
 	})
 */
 	acpi_addr_t addr = {
-		.space_id   = ACPI_ADDRESS_SPACE_FIXED,
-		.bit_width  = 0,
-		.bit_offset = 0,
-		{
-			.resv       = 0
-		},
-		.addrl      = 0,
-		.addrh      = 0,
+		.space_id    = ACPI_ADDRESS_SPACE_FIXED,
+		.bit_width   = 0,
+		.bit_offset  = 0,
+		.access_size = 0,
+		.addrl       = 0,
+		.addrh       = 0,
 	};
 
 	acpigen_write_name("_PTC");
@@ -845,7 +843,7 @@ static void acpigen_write_register(const acpi_addr_t *addr)
 	acpigen_emit_byte(addr->space_id);	/* Address Space ID */
 	acpigen_emit_byte(addr->bit_width);	/* Register Bit Width */
 	acpigen_emit_byte(addr->bit_offset);	/* Register Bit Offset */
-	acpigen_emit_byte(addr->resv);		/* Register Access Size */
+	acpigen_emit_byte(addr->access_size);	/* Register Access Size */
 	acpigen_emit_dword(addr->addrl);	/* Register Address Low */
 	acpigen_emit_dword(addr->addrh);	/* Register Address High */
 }
diff --git a/src/arch/x86/include/arch/acpi.h b/src/arch/x86/include/arch/acpi.h
index b3a5ce796a..63f3045ee0 100644
--- a/src/arch/x86/include/arch/acpi.h
+++ b/src/arch/x86/include/arch/acpi.h
@@ -103,10 +103,7 @@ typedef struct acpi_gen_regaddr {
 	u8  space_id;		/* Address space ID */
 	u8  bit_width;		/* Register size in bits */
 	u8  bit_offset;		/* Register bit offset */
-	union {
-		u8  resv;		/* Reserved in ACPI 2.0 - 2.0b */
-		u8  access_size;	/* Access size since ACPI 2.0c */
-	};
+	u8  access_size;	/* Access size since ACPI 2.0c */
 	u32 addrl;		/* Register address, low 32 bits */
 	u32 addrh;		/* Register address, high 32 bits */
 } __packed acpi_addr_t;
diff --git a/src/cpu/amd/family_10h-family_15h/powernow_acpi.c b/src/cpu/amd/family_10h-family_15h/powernow_acpi.c
index 2ce472215f..15b655028c 100644
--- a/src/cpu/amd/family_10h-family_15h/powernow_acpi.c
+++ b/src/cpu/amd/family_10h-family_15h/powernow_acpi.c
@@ -114,7 +114,7 @@ static void write_cstates_for_core(int coreID)
 		cstate.resource.bit_offset = 0;
 		cstate.resource.addrl = rdmsr(MSR_CSTATE_ADDRESS).lo + 1;
 		cstate.resource.addrh = 0;
-		cstate.resource.resv = 1;
+		cstate.resource.access_size = 1;
 	} else {
 		cstate.ctype = 2;
 		cstate.latency = 75;
@@ -124,7 +124,7 @@ static void write_cstates_for_core(int coreID)
 		cstate.resource.bit_offset = 0;
 		cstate.resource.addrl = rdmsr(MSR_CSTATE_ADDRESS).lo;
 		cstate.resource.addrh = 0;
-		cstate.resource.resv = 1;
+		cstate.resource.access_size = 1;
 	}
 
 	acpigen_write_CST_package(&cstate, cstate_count);
diff --git a/src/cpu/intel/common/common_init.c b/src/cpu/intel/common/common_init.c
index 321c56cf3f..a568ea14e5 100644
--- a/src/cpu/intel/common/common_init.c
+++ b/src/cpu/intel/common/common_init.c
@@ -113,9 +113,7 @@ void cpu_init_cppc_config(struct cppc_config *config, u32 version)
 		.space_id   = ACPI_ADDRESS_SPACE_FIXED,
 		.bit_width  = 8,
 		.bit_offset = 0,
-		{
-			.access_size = 4
-		},
+		.access_size = 4,
 		.addrl      = 0,
 		.addrh      = 0,
 	};
@@ -123,9 +121,7 @@ void cpu_init_cppc_config(struct cppc_config *config, u32 version)
 		.space_id   = ACPI_ADDRESS_SPACE_MEMORY,
 		.bit_width  = 0,
 		.bit_offset = 0,
-		{
-			.resv = 0
-		},
+		.access_size = 0,
 		.addrl      = 0,
 		.addrh      = 0,
 	};
diff --git a/src/cpu/intel/model_2065x/model_2065x_init.c b/src/cpu/intel/model_2065x/model_2065x_init.c
index 240bf50737..fd34229688 100644
--- a/src/cpu/intel/model_2065x/model_2065x_init.c
+++ b/src/cpu/intel/model_2065x/model_2065x_init.c
@@ -49,7 +49,7 @@ static acpi_cstate_t cstate_map[] = {
 			.space_id = ACPI_ADDRESS_SPACE_FIXED,
 			.bit_width = ACPI_FFIXEDHW_VENDOR_INTEL,
 			.bit_offset = ACPI_FFIXEDHW_CLASS_MWAIT,
-			.resv = ACPI_FFIXEDHW_FLAG_HW_COORD,
+			.access_size = ACPI_FFIXEDHW_FLAG_HW_COORD,
 		}
 	},
 	{	/* 2: C1E */
@@ -60,7 +60,7 @@ static acpi_cstate_t cstate_map[] = {
 			.space_id = ACPI_ADDRESS_SPACE_FIXED,
 			.bit_width = ACPI_FFIXEDHW_VENDOR_INTEL,
 			.bit_offset = ACPI_FFIXEDHW_CLASS_MWAIT,
-			.resv = ACPI_FFIXEDHW_FLAG_HW_COORD,
+			.access_size = ACPI_FFIXEDHW_FLAG_HW_COORD,
 		}
 	},
 	{	/* 3: C3 */
@@ -71,7 +71,7 @@ static acpi_cstate_t cstate_map[] = {
 			.space_id = ACPI_ADDRESS_SPACE_FIXED,
 			.bit_width = ACPI_FFIXEDHW_VENDOR_INTEL,
 			.bit_offset = ACPI_FFIXEDHW_CLASS_MWAIT,
-			.resv = ACPI_FFIXEDHW_FLAG_HW_COORD,
+			.access_size = ACPI_FFIXEDHW_FLAG_HW_COORD,
 		}
 	},
 	{	/* 4: C6 */
@@ -82,7 +82,7 @@ static acpi_cstate_t cstate_map[] = {
 			.space_id = ACPI_ADDRESS_SPACE_FIXED,
 			.bit_width = ACPI_FFIXEDHW_VENDOR_INTEL,
 			.bit_offset = ACPI_FFIXEDHW_CLASS_MWAIT,
-			.resv = ACPI_FFIXEDHW_FLAG_HW_COORD,
+			.access_size = ACPI_FFIXEDHW_FLAG_HW_COORD,
 		}
 	},
 	{	/* 5: C7 */
@@ -93,7 +93,7 @@ static acpi_cstate_t cstate_map[] = {
 			.space_id = ACPI_ADDRESS_SPACE_FIXED,
 			.bit_width = ACPI_FFIXEDHW_VENDOR_INTEL,
 			.bit_offset = ACPI_FFIXEDHW_CLASS_MWAIT,
-			.resv = ACPI_FFIXEDHW_FLAG_HW_COORD,
+			.access_size = ACPI_FFIXEDHW_FLAG_HW_COORD,
 		}
 	},
 	{	/* 6: C7S */
@@ -104,7 +104,7 @@ static acpi_cstate_t cstate_map[] = {
 			.space_id = ACPI_ADDRESS_SPACE_FIXED,
 			.bit_width = ACPI_FFIXEDHW_VENDOR_INTEL,
 			.bit_offset = ACPI_FFIXEDHW_CLASS_MWAIT,
-			.resv = ACPI_FFIXEDHW_FLAG_HW_COORD,
+			.access_size = ACPI_FFIXEDHW_FLAG_HW_COORD,
 		}
 	},
 	{ 0 }
diff --git a/src/cpu/intel/model_206ax/model_206ax_init.c b/src/cpu/intel/model_206ax/model_206ax_init.c
index 33ad1e79ae..e7462088a9 100644
--- a/src/cpu/intel/model_206ax/model_206ax_init.c
+++ b/src/cpu/intel/model_206ax/model_206ax_init.c
@@ -53,7 +53,7 @@ static acpi_cstate_t cstate_map[] = {
 			.space_id = ACPI_ADDRESS_SPACE_FIXED,
 			.bit_width = ACPI_FFIXEDHW_VENDOR_INTEL,
 			.bit_offset = ACPI_FFIXEDHW_CLASS_MWAIT,
-			.resv = ACPI_FFIXEDHW_FLAG_HW_COORD,
+			.access_size = ACPI_FFIXEDHW_FLAG_HW_COORD,
 		}
 	},
 	{	/* 2: C1E */
@@ -64,7 +64,7 @@ static acpi_cstate_t cstate_map[] = {
 			.space_id = ACPI_ADDRESS_SPACE_FIXED,
 			.bit_width = ACPI_FFIXEDHW_VENDOR_INTEL,
 			.bit_offset = ACPI_FFIXEDHW_CLASS_MWAIT,
-			.resv = ACPI_FFIXEDHW_FLAG_HW_COORD,
+			.access_size = ACPI_FFIXEDHW_FLAG_HW_COORD,
 		}
 	},
 	{	/* 3: C3 */
@@ -75,7 +75,7 @@ static acpi_cstate_t cstate_map[] = {
 			.space_id = ACPI_ADDRESS_SPACE_FIXED,
 			.bit_width = ACPI_FFIXEDHW_VENDOR_INTEL,
 			.bit_offset = ACPI_FFIXEDHW_CLASS_MWAIT,
-			.resv = ACPI_FFIXEDHW_FLAG_HW_COORD,
+			.access_size = ACPI_FFIXEDHW_FLAG_HW_COORD,
 		}
 	},
 	{	/* 4: C6 */
@@ -86,7 +86,7 @@ static acpi_cstate_t cstate_map[] = {
 			.space_id = ACPI_ADDRESS_SPACE_FIXED,
 			.bit_width = ACPI_FFIXEDHW_VENDOR_INTEL,
 			.bit_offset = ACPI_FFIXEDHW_CLASS_MWAIT,
-			.resv = ACPI_FFIXEDHW_FLAG_HW_COORD,
+			.access_size = ACPI_FFIXEDHW_FLAG_HW_COORD,
 		}
 	},
 	{	/* 5: C7 */
@@ -97,7 +97,7 @@ static acpi_cstate_t cstate_map[] = {
 			.space_id = ACPI_ADDRESS_SPACE_FIXED,
 			.bit_width = ACPI_FFIXEDHW_VENDOR_INTEL,
 			.bit_offset = ACPI_FFIXEDHW_CLASS_MWAIT,
-			.resv = ACPI_FFIXEDHW_FLAG_HW_COORD,
+			.access_size = ACPI_FFIXEDHW_FLAG_HW_COORD,
 		}
 	},
 	{	/* 6: C7S */
@@ -108,7 +108,7 @@ static acpi_cstate_t cstate_map[] = {
 			.space_id = ACPI_ADDRESS_SPACE_FIXED,
 			.bit_width = ACPI_FFIXEDHW_VENDOR_INTEL,
 			.bit_offset = ACPI_FFIXEDHW_CLASS_MWAIT,
-			.resv = ACPI_FFIXEDHW_FLAG_HW_COORD,
+			.access_size = ACPI_FFIXEDHW_FLAG_HW_COORD,
 		}
 	},
 	{ 0 }
diff --git a/src/mainboard/amd/serengeti_cheetah_fam10/fadt.c b/src/mainboard/amd/serengeti_cheetah_fam10/fadt.c
index bbb31042b0..2067024088 100644
--- a/src/mainboard/amd/serengeti_cheetah_fam10/fadt.c
+++ b/src/mainboard/amd/serengeti_cheetah_fam10/fadt.c
@@ -89,7 +89,7 @@ void acpi_create_fadt(acpi_fadt_t *fadt,acpi_facs_t *facs,void *dsdt){
 	fadt->reset_reg.space_id = 1;
 	fadt->reset_reg.bit_width = 8;
 	fadt->reset_reg.bit_offset = 0;
-	fadt->reset_reg.resv = 0;
+	fadt->reset_reg.access_size = 0;
 	fadt->reset_reg.addrl = 0xcf9;
 	fadt->reset_reg.addrh = 0x0;
 
@@ -102,56 +102,56 @@ void acpi_create_fadt(acpi_fadt_t *fadt,acpi_facs_t *facs,void *dsdt){
 	fadt->x_pm1a_evt_blk.space_id = 1;
 	fadt->x_pm1a_evt_blk.bit_width = 32;
 	fadt->x_pm1a_evt_blk.bit_offset = 0;
-	fadt->x_pm1a_evt_blk.resv = 0;
+	fadt->x_pm1a_evt_blk.access_size = 0;
 	fadt->x_pm1a_evt_blk.addrl = pm_base;
 	fadt->x_pm1a_evt_blk.addrh = 0x0;
 
 	fadt->x_pm1b_evt_blk.space_id = 1;
 	fadt->x_pm1b_evt_blk.bit_width = 4;
 	fadt->x_pm1b_evt_blk.bit_offset = 0;
-	fadt->x_pm1b_evt_blk.resv = 0;
+	fadt->x_pm1b_evt_blk.access_size = 0;
 	fadt->x_pm1b_evt_blk.addrl = 0x0;
 	fadt->x_pm1b_evt_blk.addrh = 0x0;
 
 	fadt->x_pm1a_cnt_blk.space_id = 1;
 	fadt->x_pm1a_cnt_blk.bit_width = 16;
 	fadt->x_pm1a_cnt_blk.bit_offset = 0;
-	fadt->x_pm1a_cnt_blk.resv = 0;
+	fadt->x_pm1a_cnt_blk.access_size = 0;
 	fadt->x_pm1a_cnt_blk.addrl = pm_base+4;
 	fadt->x_pm1a_cnt_blk.addrh = 0x0;
 
 	fadt->x_pm1b_cnt_blk.space_id = 1;
 	fadt->x_pm1b_cnt_blk.bit_width = 2;
 	fadt->x_pm1b_cnt_blk.bit_offset = 0;
-	fadt->x_pm1b_cnt_blk.resv = 0;
+	fadt->x_pm1b_cnt_blk.access_size = 0;
 	fadt->x_pm1b_cnt_blk.addrl = 0x0;
 	fadt->x_pm1b_cnt_blk.addrh = 0x0;
 
 	fadt->x_pm2_cnt_blk.space_id = 1;
 	fadt->x_pm2_cnt_blk.bit_width = 0;
 	fadt->x_pm2_cnt_blk.bit_offset = 0;
-	fadt->x_pm2_cnt_blk.resv = 0;
+	fadt->x_pm2_cnt_blk.access_size = 0;
 	fadt->x_pm2_cnt_blk.addrl = 0x0;
 	fadt->x_pm2_cnt_blk.addrh = 0x0;
 
 	fadt->x_pm_tmr_blk.space_id = 1;
 	fadt->x_pm_tmr_blk.bit_width = 32;
 	fadt->x_pm_tmr_blk.bit_offset = 0;
-	fadt->x_pm_tmr_blk.resv = 0;
+	fadt->x_pm_tmr_blk.access_size = 0;
 	fadt->x_pm_tmr_blk.addrl = pm_base+0x08;
 	fadt->x_pm_tmr_blk.addrh = 0x0;
 
 	fadt->x_gpe0_blk.space_id = 1;
 	fadt->x_gpe0_blk.bit_width = 32;
 	fadt->x_gpe0_blk.bit_offset = 0;
-	fadt->x_gpe0_blk.resv = 0;
+	fadt->x_gpe0_blk.access_size = 0;
 	fadt->x_gpe0_blk.addrl = pm_base+0x20;
 	fadt->x_gpe0_blk.addrh = 0x0;
 
 	fadt->x_gpe1_blk.space_id = 1;
 	fadt->x_gpe1_blk.bit_width = 64;
 	fadt->x_gpe1_blk.bit_offset = 16;
-	fadt->x_gpe1_blk.resv = 0;
+	fadt->x_gpe1_blk.access_size = 0;
 	fadt->x_gpe1_blk.addrl = pm_base+0xb0;
 	fadt->x_gpe1_blk.addrh = 0x0;
 
diff --git a/src/mainboard/amd/torpedo/fadt.c b/src/mainboard/amd/torpedo/fadt.c
index 37f7cec4b6..9e33c07fc8 100644
--- a/src/mainboard/amd/torpedo/fadt.c
+++ b/src/mainboard/amd/torpedo/fadt.c
@@ -137,7 +137,7 @@ void acpi_create_fadt(acpi_fadt_t * fadt, acpi_facs_t * facs, void *dsdt)
 	fadt->reset_reg.space_id = 1;
 	fadt->reset_reg.bit_width = 8;
 	fadt->reset_reg.bit_offset = 0;
-	fadt->reset_reg.resv = 0;
+	fadt->reset_reg.access_size = 0;
 	fadt->reset_reg.addrl = 0xcf9;
 	fadt->reset_reg.addrh = 0x0;
 
@@ -150,14 +150,14 @@ void acpi_create_fadt(acpi_fadt_t * fadt, acpi_facs_t * facs, void *dsdt)
 	fadt->x_pm1a_evt_blk.space_id = 1;
 	fadt->x_pm1a_evt_blk.bit_width = 32;
 	fadt->x_pm1a_evt_blk.bit_offset = 0;
-	fadt->x_pm1a_evt_blk.resv = 0;
+	fadt->x_pm1a_evt_blk.access_size = 0;
 	fadt->x_pm1a_evt_blk.addrl = ACPI_PM_EVT_BLK;
 	fadt->x_pm1a_evt_blk.addrh = 0x0;
 
 	fadt->x_pm1b_evt_blk.space_id = 1;
 	fadt->x_pm1b_evt_blk.bit_width = 4;
 	fadt->x_pm1b_evt_blk.bit_offset = 0;
-	fadt->x_pm1b_evt_blk.resv = 0;
+	fadt->x_pm1b_evt_blk.access_size = 0;
 	fadt->x_pm1b_evt_blk.addrl = 0x0;
 	fadt->x_pm1b_evt_blk.addrh = 0x0;
 
@@ -165,14 +165,14 @@ void acpi_create_fadt(acpi_fadt_t * fadt, acpi_facs_t * facs, void *dsdt)
 	fadt->x_pm1a_cnt_blk.space_id = 1;
 	fadt->x_pm1a_cnt_blk.bit_width = 16;
 	fadt->x_pm1a_cnt_blk.bit_offset = 0;
-	fadt->x_pm1a_cnt_blk.resv = 0;
+	fadt->x_pm1a_cnt_blk.access_size = 0;
 	fadt->x_pm1a_cnt_blk.addrl = ACPI_PM1_CNT_BLK;
 	fadt->x_pm1a_cnt_blk.addrh = 0x0;
 
 	fadt->x_pm1b_cnt_blk.space_id = 1;
 	fadt->x_pm1b_cnt_blk.bit_width = 2;
 	fadt->x_pm1b_cnt_blk.bit_offset = 0;
-	fadt->x_pm1b_cnt_blk.resv = 0;
+	fadt->x_pm1b_cnt_blk.access_size = 0;
 	fadt->x_pm1b_cnt_blk.addrl = 0x0;
 	fadt->x_pm1b_cnt_blk.addrh = 0x0;
 
@@ -180,7 +180,7 @@ void acpi_create_fadt(acpi_fadt_t * fadt, acpi_facs_t * facs, void *dsdt)
 	fadt->x_pm2_cnt_blk.space_id = 1;
 	fadt->x_pm2_cnt_blk.bit_width = 0;
 	fadt->x_pm2_cnt_blk.bit_offset = 0;
-	fadt->x_pm2_cnt_blk.resv = 0;
+	fadt->x_pm2_cnt_blk.access_size = 0;
 	fadt->x_pm2_cnt_blk.addrl = ACPI_PM2_CNT_BLK;
 	fadt->x_pm2_cnt_blk.addrh = 0x0;
 
@@ -188,7 +188,7 @@ void acpi_create_fadt(acpi_fadt_t * fadt, acpi_facs_t * facs, void *dsdt)
 	fadt->x_pm_tmr_blk.space_id = 1;
 	fadt->x_pm_tmr_blk.bit_width = 32;
 	fadt->x_pm_tmr_blk.bit_offset = 0;
-	fadt->x_pm_tmr_blk.resv = 0;
+	fadt->x_pm_tmr_blk.access_size = 0;
 	fadt->x_pm_tmr_blk.addrl = ACPI_PM_TMR_BLK;
 	fadt->x_pm_tmr_blk.addrh = 0x0;
 
@@ -196,7 +196,7 @@ void acpi_create_fadt(acpi_fadt_t * fadt, acpi_facs_t * facs, void *dsdt)
 	fadt->x_gpe0_blk.space_id = 1;
 	fadt->x_gpe0_blk.bit_width = 32;
 	fadt->x_gpe0_blk.bit_offset = 0;
-	fadt->x_gpe0_blk.resv = 0;
+	fadt->x_gpe0_blk.access_size = 0;
 	fadt->x_gpe0_blk.addrl = ACPI_GPE0_BLK;
 	fadt->x_gpe0_blk.addrh = 0x0;
 
@@ -204,7 +204,7 @@ void acpi_create_fadt(acpi_fadt_t * fadt, acpi_facs_t * facs, void *dsdt)
 	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.resv = 0;
+	fadt->x_gpe1_blk.access_size = 0;
 	fadt->x_gpe1_blk.addrl = 0;
 	fadt->x_gpe1_blk.addrh = 0x0;
 
diff --git a/src/mainboard/aopen/dxplplusu/fadt.c b/src/mainboard/aopen/dxplplusu/fadt.c
index c93733b085..adf94e95eb 100644
--- a/src/mainboard/aopen/dxplplusu/fadt.c
+++ b/src/mainboard/aopen/dxplplusu/fadt.c
@@ -93,7 +93,7 @@ void acpi_create_fadt(acpi_fadt_t * fadt, acpi_facs_t * facs, void *dsdt)
 	fadt->reset_reg.space_id = 0;
 	fadt->reset_reg.bit_width = 0;
 	fadt->reset_reg.bit_offset = 0;
-	fadt->reset_reg.resv = 0;
+	fadt->reset_reg.access_size = 0;
 	fadt->reset_reg.addrl = 0x0;
 	fadt->reset_reg.addrh = 0x0;
 
@@ -106,56 +106,56 @@ void acpi_create_fadt(acpi_fadt_t * fadt, acpi_facs_t * facs, void *dsdt)
 	fadt->x_pm1a_evt_blk.space_id = 1;
 	fadt->x_pm1a_evt_blk.bit_width = 32;
 	fadt->x_pm1a_evt_blk.bit_offset = 0;
-	fadt->x_pm1a_evt_blk.resv = 0;
+	fadt->x_pm1a_evt_blk.access_size = 0;
 	fadt->x_pm1a_evt_blk.addrl = pmbase;
 	fadt->x_pm1a_evt_blk.addrh = 0x0;
 
 	fadt->x_pm1b_evt_blk.space_id = 1;
 	fadt->x_pm1b_evt_blk.bit_width = 0;
 	fadt->x_pm1b_evt_blk.bit_offset = 0;
-	fadt->x_pm1b_evt_blk.resv = 0;
+	fadt->x_pm1b_evt_blk.access_size = 0;
 	fadt->x_pm1b_evt_blk.addrl = 0x0;
 	fadt->x_pm1b_evt_blk.addrh = 0x0;
 
 	fadt->x_pm1a_cnt_blk.space_id = 1;
 	fadt->x_pm1a_cnt_blk.bit_width = 16;
 	fadt->x_pm1a_cnt_blk.bit_offset = 0;
-	fadt->x_pm1a_cnt_blk.resv = 0;
+	fadt->x_pm1a_cnt_blk.access_size = 0;
 	fadt->x_pm1a_cnt_blk.addrl = pmbase + 0x4;
 	fadt->x_pm1a_cnt_blk.addrh = 0x0;
 
 	fadt->x_pm1b_cnt_blk.space_id = 1;
 	fadt->x_pm1b_cnt_blk.bit_width = 0;
 	fadt->x_pm1b_cnt_blk.bit_offset = 0;
-	fadt->x_pm1b_cnt_blk.resv = 0;
+	fadt->x_pm1b_cnt_blk.access_size = 0;
 	fadt->x_pm1b_cnt_blk.addrl = 0x0;
 	fadt->x_pm1b_cnt_blk.addrh = 0x0;
 
 	fadt->x_pm2_cnt_blk.space_id = 1;
 	fadt->x_pm2_cnt_blk.bit_width = 0;
 	fadt->x_pm2_cnt_blk.bit_offset = 0;
-	fadt->x_pm2_cnt_blk.resv = 0;
+	fadt->x_pm2_cnt_blk.access_size = 0;
 	fadt->x_pm2_cnt_blk.addrl = 0x0;
 	fadt->x_pm2_cnt_blk.addrh = 0x0;
 
 	fadt->x_pm_tmr_blk.space_id = 1;
 	fadt->x_pm_tmr_blk.bit_width = 32;
 	fadt->x_pm_tmr_blk.bit_offset = 0;
-	fadt->x_pm_tmr_blk.resv = 0;
+	fadt->x_pm_tmr_blk.access_size = 0;
 	fadt->x_pm_tmr_blk.addrl = pmbase + 0x8;
 	fadt->x_pm_tmr_blk.addrh = 0x0;
 
 	fadt->x_gpe0_blk.space_id = 1;
 	fadt->x_gpe0_blk.bit_width = 64;
 	fadt->x_gpe0_blk.bit_offset = 0;
-	fadt->x_gpe0_blk.resv = 0;
+	fadt->x_gpe0_blk.access_size = 0;
 	fadt->x_gpe0_blk.addrl = pmbase + 0x28;
 	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.resv = 0;
+	fadt->x_gpe1_blk.access_size = 0;
 	fadt->x_gpe1_blk.addrl = 0x0;
 	fadt->x_gpe1_blk.addrh = 0x0;
 
diff --git a/src/mainboard/apple/macbook21/mainboard.c b/src/mainboard/apple/macbook21/mainboard.c
index 3f4d6e6338..f26c6765f3 100644
--- a/src/mainboard/apple/macbook21/mainboard.c
+++ b/src/mainboard/apple/macbook21/mainboard.c
@@ -36,9 +36,7 @@ static acpi_cstate_t cst_entries[] = {
 			.space_id = ACPI_ADDRESS_SPACE_FIXED,
 			.bit_width = ACPI_FFIXEDHW_VENDOR_INTEL,
 			.bit_offset = ACPI_FFIXEDHW_CLASS_MWAIT,
-			{
-				.resv = 0,
-			},
+			.access_size = 0,
 			.addrl = 0,
 			.addrh = 0,
 		}
@@ -51,9 +49,7 @@ static acpi_cstate_t cst_entries[] = {
 			.space_id = ACPI_ADDRESS_SPACE_FIXED,
 			.bit_width = ACPI_FFIXEDHW_VENDOR_INTEL,
 			.bit_offset = ACPI_FFIXEDHW_CLASS_MWAIT,
-			{
-				.resv = 0,
-			},
+			.access_size = 0,
 			.addrl = 0x10,
 			.addrh = 0,
 		}
diff --git a/src/mainboard/emulation/qemu-q35/acpi_tables.c b/src/mainboard/emulation/qemu-q35/acpi_tables.c
index e7147fc6ab..6acbaf7478 100644
--- a/src/mainboard/emulation/qemu-q35/acpi_tables.c
+++ b/src/mainboard/emulation/qemu-q35/acpi_tables.c
@@ -103,7 +103,7 @@ void acpi_create_fadt(acpi_fadt_t * fadt, acpi_facs_t * facs, void *dsdt)
 	fadt->reset_reg.space_id = ACPI_ADDRESS_SPACE_IO;
 	fadt->reset_reg.bit_width = 8;
 	fadt->reset_reg.bit_offset = 0;
-	fadt->reset_reg.resv = 0;
+	fadt->reset_reg.access_size = 0;
 	fadt->reset_reg.addrl = 0xcf9;
 	fadt->reset_reg.addrh = 0;
 	fadt->reset_value = 0x06;
@@ -117,14 +117,14 @@ void acpi_create_fadt(acpi_fadt_t * fadt, acpi_facs_t * facs, void *dsdt)
 	fadt->x_pm1a_evt_blk.space_id = 1;
 	fadt->x_pm1a_evt_blk.bit_width = 32;
 	fadt->x_pm1a_evt_blk.bit_offset = 0;
-	fadt->x_pm1a_evt_blk.resv = 0;
+	fadt->x_pm1a_evt_blk.access_size = 0;
 	fadt->x_pm1a_evt_blk.addrl = pmbase;
 	fadt->x_pm1a_evt_blk.addrh = 0x0;
 
 	fadt->x_pm1b_evt_blk.space_id = 0;
 	fadt->x_pm1b_evt_blk.bit_width = 0;
 	fadt->x_pm1b_evt_blk.bit_offset = 0;
-	fadt->x_pm1b_evt_blk.resv = 0;
+	fadt->x_pm1b_evt_blk.access_size = 0;
 	fadt->x_pm1b_evt_blk.addrl = 0x0;
 	fadt->x_pm1b_evt_blk.addrh = 0x0;
 
@@ -132,42 +132,42 @@ void acpi_create_fadt(acpi_fadt_t * fadt, acpi_facs_t * facs, void *dsdt)
 	fadt->x_pm1a_cnt_blk.bit_width = 16; /* Upper word is reserved and
 						Linux complains about 32 bit. */
 	fadt->x_pm1a_cnt_blk.bit_offset = 0;
-	fadt->x_pm1a_cnt_blk.resv = 0;
+	fadt->x_pm1a_cnt_blk.access_size = 0;
 	fadt->x_pm1a_cnt_blk.addrl = pmbase + 0x4;
 	fadt->x_pm1a_cnt_blk.addrh = 0x0;
 
 	fadt->x_pm1b_cnt_blk.space_id = 0;
 	fadt->x_pm1b_cnt_blk.bit_width = 0;
 	fadt->x_pm1b_cnt_blk.bit_offset = 0;
-	fadt->x_pm1b_cnt_blk.resv = 0;
+	fadt->x_pm1b_cnt_blk.access_size = 0;
 	fadt->x_pm1b_cnt_blk.addrl = 0x0;
 	fadt->x_pm1b_cnt_blk.addrh = 0x0;
 
 	fadt->x_pm2_cnt_blk.space_id = 1;
 	fadt->x_pm2_cnt_blk.bit_width = 8;
 	fadt->x_pm2_cnt_blk.bit_offset = 0;
-	fadt->x_pm2_cnt_blk.resv = 0;
+	fadt->x_pm2_cnt_blk.access_size = 0;
 	fadt->x_pm2_cnt_blk.addrl = pmbase + 0x50;
 	fadt->x_pm2_cnt_blk.addrh = 0x0;
 
 	fadt->x_pm_tmr_blk.space_id = 1;
 	fadt->x_pm_tmr_blk.bit_width = 32;
 	fadt->x_pm_tmr_blk.bit_offset = 0;
-	fadt->x_pm_tmr_blk.resv = 0;
+	fadt->x_pm_tmr_blk.access_size = 0;
 	fadt->x_pm_tmr_blk.addrl = pmbase + 0x8;
 	fadt->x_pm_tmr_blk.addrh = 0x0;
 
 	fadt->x_gpe0_blk.space_id = 1;
 	fadt->x_gpe0_blk.bit_width = 128;
 	fadt->x_gpe0_blk.bit_offset = 0;
-	fadt->x_gpe0_blk.resv = 0;
+	fadt->x_gpe0_blk.access_size = 0;
 	fadt->x_gpe0_blk.addrl = pmbase + 0x20;
 	fadt->x_gpe0_blk.addrh = 0x0;
 
 	fadt->x_gpe1_blk.space_id = 0;
 	fadt->x_gpe1_blk.bit_width = 0;
 	fadt->x_gpe1_blk.bit_offset = 0;
-	fadt->x_gpe1_blk.resv = 0;
+	fadt->x_gpe1_blk.access_size = 0;
 	fadt->x_gpe1_blk.addrl = 0x0;
 	fadt->x_gpe1_blk.addrh = 0x0;
 
diff --git a/src/mainboard/getac/p470/cstates.c b/src/mainboard/getac/p470/cstates.c
index 38b0d30f3f..fe4af04923 100644
--- a/src/mainboard/getac/p470/cstates.c
+++ b/src/mainboard/getac/p470/cstates.c
@@ -19,17 +19,17 @@ static acpi_cstate_t cst_entries[] = {
 	{
 		/* ACPI C1 / CPU C1 */
 		1, 0x01, 1000,
-		{ ACPI_ADDRESS_SPACE_FIXED, 1, 2, { 1 }, 0, 0 }
+		{ ACPI_ADDRESS_SPACE_FIXED, 1, 2, 1, 0, 0 }
 	},
 	{
 		/* ACPI C2 / CPU C2 */
 		2, 0x01,  500,
-		{ ACPI_ADDRESS_SPACE_IO, 8, 0, { 0 }, DEFAULT_PMBASE + LV2, 0 }
+		{ ACPI_ADDRESS_SPACE_IO, 8, 0, 0, DEFAULT_PMBASE + LV2, 0 }
 	},
 	{
 		/* ACPI C3 / CPU C2 */
 		2, 0x11,  250,
-		{ ACPI_ADDRESS_SPACE_IO, 8, 0, { 0 }, DEFAULT_PMBASE + LV3, 0 }
+		{ ACPI_ADDRESS_SPACE_IO, 8, 0, 0, DEFAULT_PMBASE + LV3, 0 }
 	},
 };
 
diff --git a/src/mainboard/lenovo/t400/cstates.c b/src/mainboard/lenovo/t400/cstates.c
index 175153ebd4..e51accbe1a 100644
--- a/src/mainboard/lenovo/t400/cstates.c
+++ b/src/mainboard/lenovo/t400/cstates.c
@@ -21,17 +21,17 @@ static acpi_cstate_t cst_entries[] = {
 	{
 		/* ACPI C1 / CPU C1 */
 		1, 0x01, 1000,
-		{ ACPI_ADDRESS_SPACE_FIXED, 1, 2, { 1 }, 0, 0 }
+		{ ACPI_ADDRESS_SPACE_FIXED, 1, 2, 1, 0, 0 }
 	},
 	{
 		/* ACPI C2 / CPU C2 */
 		2, 0x01,  500,
-		{ ACPI_ADDRESS_SPACE_FIXED, 1, 2, { 1 }, 0x10, 0 }
+		{ ACPI_ADDRESS_SPACE_FIXED, 1, 2, 1, 0x10, 0 }
 	},
 	{
 		/* acpi C3 / cpu C3 */
 		3, 0x37,  250,
-		{ ACPI_ADDRESS_SPACE_FIXED, 1, 2, { 1 }, 0x20, 0 }
+		{ ACPI_ADDRESS_SPACE_FIXED, 1, 2, 1, 0x20, 0 }
 	},
 };
 
diff --git a/src/mainboard/lenovo/t400/fadt.c b/src/mainboard/lenovo/t400/fadt.c
index 45c0d74222..673791f99c 100644
--- a/src/mainboard/lenovo/t400/fadt.c
+++ b/src/mainboard/lenovo/t400/fadt.c
@@ -82,7 +82,7 @@ void acpi_create_fadt(acpi_fadt_t * fadt, acpi_facs_t * facs, void *dsdt)
 	fadt->reset_reg.space_id = ACPI_ADDRESS_SPACE_IO;
 	fadt->reset_reg.bit_width = 8;
 	fadt->reset_reg.bit_offset = 0;
-	fadt->reset_reg.resv = 0;
+	fadt->reset_reg.access_size = 0;
 	fadt->reset_reg.addrl = 0xcf9;
 	fadt->reset_reg.addrh = 0;
 	fadt->reset_value = 0x06;
@@ -96,14 +96,14 @@ void acpi_create_fadt(acpi_fadt_t * fadt, acpi_facs_t * facs, void *dsdt)
 	fadt->x_pm1a_evt_blk.space_id = 1;
 	fadt->x_pm1a_evt_blk.bit_width = 32;
 	fadt->x_pm1a_evt_blk.bit_offset = 0;
-	fadt->x_pm1a_evt_blk.resv = 0;
+	fadt->x_pm1a_evt_blk.access_size = 0;
 	fadt->x_pm1a_evt_blk.addrl = pmbase;
 	fadt->x_pm1a_evt_blk.addrh = 0x0;
 
 	fadt->x_pm1b_evt_blk.space_id = 0;
 	fadt->x_pm1b_evt_blk.bit_width = 0;
 	fadt->x_pm1b_evt_blk.bit_offset = 0;
-	fadt->x_pm1b_evt_blk.resv = 0;
+	fadt->x_pm1b_evt_blk.access_size = 0;
 	fadt->x_pm1b_evt_blk.addrl = 0x0;
 	fadt->x_pm1b_evt_blk.addrh = 0x0;
 
@@ -111,42 +111,42 @@ void acpi_create_fadt(acpi_fadt_t * fadt, acpi_facs_t * facs, void *dsdt)
 	fadt->x_pm1a_cnt_blk.bit_width = 16; /* Upper word is reserved and
 						Linux complains about 32 bit. */
 	fadt->x_pm1a_cnt_blk.bit_offset = 0;
-	fadt->x_pm1a_cnt_blk.resv = 0;
+	fadt->x_pm1a_cnt_blk.access_size = 0;
 	fadt->x_pm1a_cnt_blk.addrl = pmbase + 0x4;
 	fadt->x_pm1a_cnt_blk.addrh = 0x0;
 
 	fadt->x_pm1b_cnt_blk.space_id = 0;
 	fadt->x_pm1b_cnt_blk.bit_width = 0;
 	fadt->x_pm1b_cnt_blk.bit_offset = 0;
-	fadt->x_pm1b_cnt_blk.resv = 0;
+	fadt->x_pm1b_cnt_blk.access_size = 0;
 	fadt->x_pm1b_cnt_blk.addrl = 0x0;
 	fadt->x_pm1b_cnt_blk.addrh = 0x0;
 
 	fadt->x_pm2_cnt_blk.space_id = 1;
 	fadt->x_pm2_cnt_blk.bit_width = 8;
 	fadt->x_pm2_cnt_blk.bit_offset = 0;
-	fadt->x_pm2_cnt_blk.resv = 0;
+	fadt->x_pm2_cnt_blk.access_size = 0;
 	fadt->x_pm2_cnt_blk.addrl = pmbase + 0x50;
 	fadt->x_pm2_cnt_blk.addrh = 0x0;
 
 	fadt->x_pm_tmr_blk.space_id = 1;
 	fadt->x_pm_tmr_blk.bit_width = 32;
 	fadt->x_pm_tmr_blk.bit_offset = 0;
-	fadt->x_pm_tmr_blk.resv = 0;
+	fadt->x_pm_tmr_blk.access_size = 0;
 	fadt->x_pm_tmr_blk.addrl = pmbase + 0x8;
 	fadt->x_pm_tmr_blk.addrh = 0x0;
 
 	fadt->x_gpe0_blk.space_id = 1;
 	fadt->x_gpe0_blk.bit_width = 128;
 	fadt->x_gpe0_blk.bit_offset = 0;
-	fadt->x_gpe0_blk.resv = 0;
+	fadt->x_gpe0_blk.access_size = 0;
 	fadt->x_gpe0_blk.addrl = pmbase + 0x20;
 	fadt->x_gpe0_blk.addrh = 0x0;
 
 	fadt->x_gpe1_blk.space_id = 0;
 	fadt->x_gpe1_blk.bit_width = 0;
 	fadt->x_gpe1_blk.bit_offset = 0;
-	fadt->x_gpe1_blk.resv = 0;
+	fadt->x_gpe1_blk.access_size = 0;
 	fadt->x_gpe1_blk.addrl = 0x0;
 	fadt->x_gpe1_blk.addrh = 0x0;
 
diff --git a/src/mainboard/lenovo/t60/mainboard.c b/src/mainboard/lenovo/t60/mainboard.c
index 90bdc39662..df1f174597 100644
--- a/src/mainboard/lenovo/t60/mainboard.c
+++ b/src/mainboard/lenovo/t60/mainboard.c
@@ -27,9 +27,9 @@
 #define PANEL INT15_5F35_CL_DISPLAY_DEFAULT
 
 static acpi_cstate_t cst_entries[] = {
-	{ 1,  1, 1000, { 0x7f, 1, 2, { 0 }, 1, 0 } },
-	{ 2,  1,  500, { 0x01, 8, 0, { 0 }, DEFAULT_PMBASE + LV2, 0 } },
-	{ 2, 17,  250, { 0x01, 8, 0, { 0 }, DEFAULT_PMBASE + LV3, 0 } },
+	{ 1,  1, 1000, { 0x7f, 1, 2, 0, 1, 0 } },
+	{ 2,  1,  500, { 0x01, 8, 0, 0, DEFAULT_PMBASE + LV2, 0 } },
+	{ 2, 17,  250, { 0x01, 8, 0, 0, DEFAULT_PMBASE + LV3, 0 } },
 };
 
 int get_cst_entries(acpi_cstate_t **entries)
diff --git a/src/mainboard/lenovo/x200/cstates.c b/src/mainboard/lenovo/x200/cstates.c
index 175153ebd4..e51accbe1a 100644
--- a/src/mainboard/lenovo/x200/cstates.c
+++ b/src/mainboard/lenovo/x200/cstates.c
@@ -21,17 +21,17 @@ static acpi_cstate_t cst_entries[] = {
 	{
 		/* ACPI C1 / CPU C1 */
 		1, 0x01, 1000,
-		{ ACPI_ADDRESS_SPACE_FIXED, 1, 2, { 1 }, 0, 0 }
+		{ ACPI_ADDRESS_SPACE_FIXED, 1, 2, 1, 0, 0 }
 	},
 	{
 		/* ACPI C2 / CPU C2 */
 		2, 0x01,  500,
-		{ ACPI_ADDRESS_SPACE_FIXED, 1, 2, { 1 }, 0x10, 0 }
+		{ ACPI_ADDRESS_SPACE_FIXED, 1, 2, 1, 0x10, 0 }
 	},
 	{
 		/* acpi C3 / cpu C3 */
 		3, 0x37,  250,
-		{ ACPI_ADDRESS_SPACE_FIXED, 1, 2, { 1 }, 0x20, 0 }
+		{ ACPI_ADDRESS_SPACE_FIXED, 1, 2, 1, 0x20, 0 }
 	},
 };
 
diff --git a/src/mainboard/lenovo/x200/fadt.c b/src/mainboard/lenovo/x200/fadt.c
index 45c0d74222..673791f99c 100644
--- a/src/mainboard/lenovo/x200/fadt.c
+++ b/src/mainboard/lenovo/x200/fadt.c
@@ -82,7 +82,7 @@ void acpi_create_fadt(acpi_fadt_t * fadt, acpi_facs_t * facs, void *dsdt)
 	fadt->reset_reg.space_id = ACPI_ADDRESS_SPACE_IO;
 	fadt->reset_reg.bit_width = 8;
 	fadt->reset_reg.bit_offset = 0;
-	fadt->reset_reg.resv = 0;
+	fadt->reset_reg.access_size = 0;
 	fadt->reset_reg.addrl = 0xcf9;
 	fadt->reset_reg.addrh = 0;
 	fadt->reset_value = 0x06;
@@ -96,14 +96,14 @@ void acpi_create_fadt(acpi_fadt_t * fadt, acpi_facs_t * facs, void *dsdt)
 	fadt->x_pm1a_evt_blk.space_id = 1;
 	fadt->x_pm1a_evt_blk.bit_width = 32;
 	fadt->x_pm1a_evt_blk.bit_offset = 0;
-	fadt->x_pm1a_evt_blk.resv = 0;
+	fadt->x_pm1a_evt_blk.access_size = 0;
 	fadt->x_pm1a_evt_blk.addrl = pmbase;
 	fadt->x_pm1a_evt_blk.addrh = 0x0;
 
 	fadt->x_pm1b_evt_blk.space_id = 0;
 	fadt->x_pm1b_evt_blk.bit_width = 0;
 	fadt->x_pm1b_evt_blk.bit_offset = 0;
-	fadt->x_pm1b_evt_blk.resv = 0;
+	fadt->x_pm1b_evt_blk.access_size = 0;
 	fadt->x_pm1b_evt_blk.addrl = 0x0;
 	fadt->x_pm1b_evt_blk.addrh = 0x0;
 
@@ -111,42 +111,42 @@ void acpi_create_fadt(acpi_fadt_t * fadt, acpi_facs_t * facs, void *dsdt)
 	fadt->x_pm1a_cnt_blk.bit_width = 16; /* Upper word is reserved and
 						Linux complains about 32 bit. */
 	fadt->x_pm1a_cnt_blk.bit_offset = 0;
-	fadt->x_pm1a_cnt_blk.resv = 0;
+	fadt->x_pm1a_cnt_blk.access_size = 0;
 	fadt->x_pm1a_cnt_blk.addrl = pmbase + 0x4;
 	fadt->x_pm1a_cnt_blk.addrh = 0x0;
 
 	fadt->x_pm1b_cnt_blk.space_id = 0;
 	fadt->x_pm1b_cnt_blk.bit_width = 0;
 	fadt->x_pm1b_cnt_blk.bit_offset = 0;
-	fadt->x_pm1b_cnt_blk.resv = 0;
+	fadt->x_pm1b_cnt_blk.access_size = 0;
 	fadt->x_pm1b_cnt_blk.addrl = 0x0;
 	fadt->x_pm1b_cnt_blk.addrh = 0x0;
 
 	fadt->x_pm2_cnt_blk.space_id = 1;
 	fadt->x_pm2_cnt_blk.bit_width = 8;
 	fadt->x_pm2_cnt_blk.bit_offset = 0;
-	fadt->x_pm2_cnt_blk.resv = 0;
+	fadt->x_pm2_cnt_blk.access_size = 0;
 	fadt->x_pm2_cnt_blk.addrl = pmbase + 0x50;
 	fadt->x_pm2_cnt_blk.addrh = 0x0;
 
 	fadt->x_pm_tmr_blk.space_id = 1;
 	fadt->x_pm_tmr_blk.bit_width = 32;
 	fadt->x_pm_tmr_blk.bit_offset = 0;
-	fadt->x_pm_tmr_blk.resv = 0;
+	fadt->x_pm_tmr_blk.access_size = 0;
 	fadt->x_pm_tmr_blk.addrl = pmbase + 0x8;
 	fadt->x_pm_tmr_blk.addrh = 0x0;
 
 	fadt->x_gpe0_blk.space_id = 1;
 	fadt->x_gpe0_blk.bit_width = 128;
 	fadt->x_gpe0_blk.bit_offset = 0;
-	fadt->x_gpe0_blk.resv = 0;
+	fadt->x_gpe0_blk.access_size = 0;
 	fadt->x_gpe0_blk.addrl = pmbase + 0x20;
 	fadt->x_gpe0_blk.addrh = 0x0;
 
 	fadt->x_gpe1_blk.space_id = 0;
 	fadt->x_gpe1_blk.bit_width = 0;
 	fadt->x_gpe1_blk.bit_offset = 0;
-	fadt->x_gpe1_blk.resv = 0;
+	fadt->x_gpe1_blk.access_size = 0;
 	fadt->x_gpe1_blk.addrl = 0x0;
 	fadt->x_gpe1_blk.addrh = 0x0;
 
diff --git a/src/mainboard/lenovo/x201/mainboard.c b/src/mainboard/lenovo/x201/mainboard.c
index 5347429bde..b8129ad294 100644
--- a/src/mainboard/lenovo/x201/mainboard.c
+++ b/src/mainboard/lenovo/x201/mainboard.c
@@ -32,9 +32,9 @@
 #include <arch/acpigen.h>
 
 static acpi_cstate_t cst_entries[] = {
-	{1, 1, 1000, {0x7f, 1, 2, {0}, 1, 0}},
-	{2, 1, 500, {0x01, 8, 0, {0}, DEFAULT_PMBASE + LV2, 0}},
-	{2, 17, 250, {0x01, 8, 0, {0}, DEFAULT_PMBASE + LV3, 0}},
+	{1, 1, 1000, {0x7f, 1, 2, 0, 1, 0} },
+	{2, 1, 500, {0x01, 8, 0, 0, DEFAULT_PMBASE + LV2, 0} },
+	{2, 17, 250, {0x01, 8, 0, 0, DEFAULT_PMBASE + LV3, 0} },
 };
 
 int get_cst_entries(acpi_cstate_t **entries)
diff --git a/src/mainboard/lenovo/x60/mainboard.c b/src/mainboard/lenovo/x60/mainboard.c
index 5cf0d26bbf..274a15113a 100644
--- a/src/mainboard/lenovo/x60/mainboard.c
+++ b/src/mainboard/lenovo/x60/mainboard.c
@@ -34,9 +34,7 @@
 		.space_id = ACPI_ADDRESS_SPACE_FIXED,	    \
 		.bit_width = ACPI_FFIXEDHW_VENDOR_INTEL,    \
 		.bit_offset = ACPI_FFIXEDHW_CLASS_MWAIT,    \
-		{					    \
-			.resv = 0,			    \
-		},					    \
+		.access_size = 0,			    \
 		.addrl = (((state) << 4) | (sub_state)),    \
 		.addrh = 0,				    \
 			 }
diff --git a/src/mainboard/lenovo/z61t/mainboard.c b/src/mainboard/lenovo/z61t/mainboard.c
index c7e7868a30..6616b4a60b 100644
--- a/src/mainboard/lenovo/z61t/mainboard.c
+++ b/src/mainboard/lenovo/z61t/mainboard.c
@@ -27,9 +27,9 @@
 #define PANEL INT15_5F35_CL_DISPLAY_DEFAULT
 
 static acpi_cstate_t cst_entries[] = {
-	{ 1,  1, 1000, { 0x7f, 1, 2, { 0 }, 1, 0 } },
-	{ 2,  1,  500, { 0x01, 8, 0, { 0 }, DEFAULT_PMBASE + LV2, 0 } },
-	{ 3, 17,  250, { 0x01, 8, 0, { 0 }, DEFAULT_PMBASE + LV3, 0 } },
+	{ 1,  1, 1000, { 0x7f, 1, 2, 0, 1, 0 } },
+	{ 2,  1,  500, { 0x01, 8, 0, 0, DEFAULT_PMBASE + LV2, 0 } },
+	{ 3, 17,  250, { 0x01, 8, 0, 0, DEFAULT_PMBASE + LV3, 0 } },
 };
 
 int get_cst_entries(acpi_cstate_t **entries)
diff --git a/src/mainboard/packardbell/ms2290/mainboard.c b/src/mainboard/packardbell/ms2290/mainboard.c
index 1fe57d647d..701d6a34c2 100644
--- a/src/mainboard/packardbell/ms2290/mainboard.c
+++ b/src/mainboard/packardbell/ms2290/mainboard.c
@@ -34,9 +34,9 @@
 #include <smbios.h>
 
 static acpi_cstate_t cst_entries[] = {
-	{1, 1, 1000, {0x7f, 1, 2, {0}, 1, 0}},
-	{2, 1, 500, {0x01, 8, 0, {0}, DEFAULT_PMBASE + LV2, 0}},
-	{2, 17, 250, {0x01, 8, 0, {0}, DEFAULT_PMBASE + LV3, 0}},
+	{1, 1, 1000, {0x7f, 1, 2, 0, 1, 0} },
+	{2, 1, 500, {0x01, 8, 0, 0, DEFAULT_PMBASE + LV2, 0} },
+	{2, 17, 250, {0x01, 8, 0, 0, DEFAULT_PMBASE + LV3, 0} },
 };
 
 int get_cst_entries(acpi_cstate_t ** entries)
diff --git a/src/mainboard/roda/rk9/cstates.c b/src/mainboard/roda/rk9/cstates.c
index 3ce2ed1a81..0a5f98a4c2 100644
--- a/src/mainboard/roda/rk9/cstates.c
+++ b/src/mainboard/roda/rk9/cstates.c
@@ -21,12 +21,12 @@ static acpi_cstate_t cst_entries[] = {
 	{
 		/* ACPI C1 / CPU C1 */
 		1, 0x01, 1000,
-		{ ACPI_ADDRESS_SPACE_FIXED, 1, 2, { 1 }, 0, 0 }
+		{ ACPI_ADDRESS_SPACE_FIXED, 1, 2, 1, 0, 0 }
 	},
 	{
 		/* ACPI C2 / CPU C2 */
 		2, 0x01,  500,
-		{ ACPI_ADDRESS_SPACE_FIXED, 1, 2, { 1 }, 0x10, 0 }
+		{ ACPI_ADDRESS_SPACE_FIXED, 1, 2, 1, 0x10, 0 }
 	},
 };
 
diff --git a/src/mainboard/roda/rk9/fadt.c b/src/mainboard/roda/rk9/fadt.c
index 45c0d74222..673791f99c 100644
--- a/src/mainboard/roda/rk9/fadt.c
+++ b/src/mainboard/roda/rk9/fadt.c
@@ -82,7 +82,7 @@ void acpi_create_fadt(acpi_fadt_t * fadt, acpi_facs_t * facs, void *dsdt)
 	fadt->reset_reg.space_id = ACPI_ADDRESS_SPACE_IO;
 	fadt->reset_reg.bit_width = 8;
 	fadt->reset_reg.bit_offset = 0;
-	fadt->reset_reg.resv = 0;
+	fadt->reset_reg.access_size = 0;
 	fadt->reset_reg.addrl = 0xcf9;
 	fadt->reset_reg.addrh = 0;
 	fadt->reset_value = 0x06;
@@ -96,14 +96,14 @@ void acpi_create_fadt(acpi_fadt_t * fadt, acpi_facs_t * facs, void *dsdt)
 	fadt->x_pm1a_evt_blk.space_id = 1;
 	fadt->x_pm1a_evt_blk.bit_width = 32;
 	fadt->x_pm1a_evt_blk.bit_offset = 0;
-	fadt->x_pm1a_evt_blk.resv = 0;
+	fadt->x_pm1a_evt_blk.access_size = 0;
 	fadt->x_pm1a_evt_blk.addrl = pmbase;
 	fadt->x_pm1a_evt_blk.addrh = 0x0;
 
 	fadt->x_pm1b_evt_blk.space_id = 0;
 	fadt->x_pm1b_evt_blk.bit_width = 0;
 	fadt->x_pm1b_evt_blk.bit_offset = 0;
-	fadt->x_pm1b_evt_blk.resv = 0;
+	fadt->x_pm1b_evt_blk.access_size = 0;
 	fadt->x_pm1b_evt_blk.addrl = 0x0;
 	fadt->x_pm1b_evt_blk.addrh = 0x0;
 
@@ -111,42 +111,42 @@ void acpi_create_fadt(acpi_fadt_t * fadt, acpi_facs_t * facs, void *dsdt)
 	fadt->x_pm1a_cnt_blk.bit_width = 16; /* Upper word is reserved and
 						Linux complains about 32 bit. */
 	fadt->x_pm1a_cnt_blk.bit_offset = 0;
-	fadt->x_pm1a_cnt_blk.resv = 0;
+	fadt->x_pm1a_cnt_blk.access_size = 0;
 	fadt->x_pm1a_cnt_blk.addrl = pmbase + 0x4;
 	fadt->x_pm1a_cnt_blk.addrh = 0x0;
 
 	fadt->x_pm1b_cnt_blk.space_id = 0;
 	fadt->x_pm1b_cnt_blk.bit_width = 0;
 	fadt->x_pm1b_cnt_blk.bit_offset = 0;
-	fadt->x_pm1b_cnt_blk.resv = 0;
+	fadt->x_pm1b_cnt_blk.access_size = 0;
 	fadt->x_pm1b_cnt_blk.addrl = 0x0;
 	fadt->x_pm1b_cnt_blk.addrh = 0x0;
 
 	fadt->x_pm2_cnt_blk.space_id = 1;
 	fadt->x_pm2_cnt_blk.bit_width = 8;
 	fadt->x_pm2_cnt_blk.bit_offset = 0;
-	fadt->x_pm2_cnt_blk.resv = 0;
+	fadt->x_pm2_cnt_blk.access_size = 0;
 	fadt->x_pm2_cnt_blk.addrl = pmbase + 0x50;
 	fadt->x_pm2_cnt_blk.addrh = 0x0;
 
 	fadt->x_pm_tmr_blk.space_id = 1;
 	fadt->x_pm_tmr_blk.bit_width = 32;
 	fadt->x_pm_tmr_blk.bit_offset = 0;
-	fadt->x_pm_tmr_blk.resv = 0;
+	fadt->x_pm_tmr_blk.access_size = 0;
 	fadt->x_pm_tmr_blk.addrl = pmbase + 0x8;
 	fadt->x_pm_tmr_blk.addrh = 0x0;
 
 	fadt->x_gpe0_blk.space_id = 1;
 	fadt->x_gpe0_blk.bit_width = 128;
 	fadt->x_gpe0_blk.bit_offset = 0;
-	fadt->x_gpe0_blk.resv = 0;
+	fadt->x_gpe0_blk.access_size = 0;
 	fadt->x_gpe0_blk.addrl = pmbase + 0x20;
 	fadt->x_gpe0_blk.addrh = 0x0;
 
 	fadt->x_gpe1_blk.space_id = 0;
 	fadt->x_gpe1_blk.bit_width = 0;
 	fadt->x_gpe1_blk.bit_offset = 0;
-	fadt->x_gpe1_blk.resv = 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/baytrail/acpi.c b/src/soc/intel/baytrail/acpi.c
index 60120bd999..b2cac4cd1e 100644
--- a/src/soc/intel/baytrail/acpi.c
+++ b/src/soc/intel/baytrail/acpi.c
@@ -216,7 +216,7 @@ void acpi_fill_in_fadt(acpi_fadt_t *fadt)
 	fadt->reset_reg.space_id = 1;
 	fadt->reset_reg.bit_width = 8;
 	fadt->reset_reg.bit_offset = 0;
-	fadt->reset_reg.resv = 0;
+	fadt->reset_reg.access_size = 0;
 	fadt->reset_reg.addrl = 0xcf9;
 	fadt->reset_reg.addrh = 0;
 	fadt->reset_value = 6;
@@ -224,56 +224,56 @@ void acpi_fill_in_fadt(acpi_fadt_t *fadt)
 	fadt->x_pm1a_evt_blk.space_id = 1;
 	fadt->x_pm1a_evt_blk.bit_width = fadt->pm1_evt_len * 8;
 	fadt->x_pm1a_evt_blk.bit_offset = 0;
-	fadt->x_pm1a_evt_blk.resv = 0;
+	fadt->x_pm1a_evt_blk.access_size = 0;
 	fadt->x_pm1a_evt_blk.addrl = pmbase + PM1_STS;
 	fadt->x_pm1a_evt_blk.addrh = 0x0;
 
 	fadt->x_pm1b_evt_blk.space_id = 1;
 	fadt->x_pm1b_evt_blk.bit_width = 0;
 	fadt->x_pm1b_evt_blk.bit_offset = 0;
-	fadt->x_pm1b_evt_blk.resv = 0;
+	fadt->x_pm1b_evt_blk.access_size = 0;
 	fadt->x_pm1b_evt_blk.addrl = 0x0;
 	fadt->x_pm1b_evt_blk.addrh = 0x0;
 
 	fadt->x_pm1a_cnt_blk.space_id = 1;
 	fadt->x_pm1a_cnt_blk.bit_width = fadt->pm1_cnt_len * 8;
 	fadt->x_pm1a_cnt_blk.bit_offset = 0;
-	fadt->x_pm1a_cnt_blk.resv = 0;
+	fadt->x_pm1a_cnt_blk.access_size = 0;
 	fadt->x_pm1a_cnt_blk.addrl = pmbase + PM1_CNT;
 	fadt->x_pm1a_cnt_blk.addrh = 0x0;
 
 	fadt->x_pm1b_cnt_blk.space_id = 1;
 	fadt->x_pm1b_cnt_blk.bit_width = 0;
 	fadt->x_pm1b_cnt_blk.bit_offset = 0;
-	fadt->x_pm1b_cnt_blk.resv = 0;
+	fadt->x_pm1b_cnt_blk.access_size = 0;
 	fadt->x_pm1b_cnt_blk.addrl = 0x0;
 	fadt->x_pm1b_cnt_blk.addrh = 0x0;
 
 	fadt->x_pm2_cnt_blk.space_id = 1;
 	fadt->x_pm2_cnt_blk.bit_width = fadt->pm2_cnt_len * 8;
 	fadt->x_pm2_cnt_blk.bit_offset = 0;
-	fadt->x_pm2_cnt_blk.resv = 0;
+	fadt->x_pm2_cnt_blk.access_size = 0;
 	fadt->x_pm2_cnt_blk.addrl = pmbase + PM2A_CNT_BLK;
 	fadt->x_pm2_cnt_blk.addrh = 0x0;
 
 	fadt->x_pm_tmr_blk.space_id = 1;
 	fadt->x_pm_tmr_blk.bit_width = fadt->pm_tmr_len * 8;
 	fadt->x_pm_tmr_blk.bit_offset = 0;
-	fadt->x_pm_tmr_blk.resv = 0;
+	fadt->x_pm_tmr_blk.access_size = 0;
 	fadt->x_pm_tmr_blk.addrl = pmbase + PM1_TMR;
 	fadt->x_pm_tmr_blk.addrh = 0x0;
 
 	fadt->x_gpe0_blk.space_id = 1;
 	fadt->x_gpe0_blk.bit_width = fadt->gpe0_blk_len * 8;
 	fadt->x_gpe0_blk.bit_offset = 0;
-	fadt->x_gpe0_blk.resv = 0;
+	fadt->x_gpe0_blk.access_size = 0;
 	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.resv = 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/acpi.c b/src/soc/intel/braswell/acpi.c
index 44f1d3a7a0..b67303e6d8 100644
--- a/src/soc/intel/braswell/acpi.c
+++ b/src/soc/intel/braswell/acpi.c
@@ -191,7 +191,7 @@ void acpi_fill_in_fadt(acpi_fadt_t *fadt)
 	fadt->reset_reg.space_id = 1;
 	fadt->reset_reg.bit_width = 8;
 	fadt->reset_reg.bit_offset = 0;
-	fadt->reset_reg.resv = 0;
+	fadt->reset_reg.access_size = 0;
 	fadt->reset_reg.addrl = 0xcf9;
 	fadt->reset_reg.addrh = 0;
 	fadt->reset_value = 6;
@@ -199,56 +199,56 @@ void acpi_fill_in_fadt(acpi_fadt_t *fadt)
 	fadt->x_pm1a_evt_blk.space_id = 1;
 	fadt->x_pm1a_evt_blk.bit_width = fadt->pm1_evt_len * 8;
 	fadt->x_pm1a_evt_blk.bit_offset = 0;
-	fadt->x_pm1a_evt_blk.resv = 0;
+	fadt->x_pm1a_evt_blk.access_size = 0;
 	fadt->x_pm1a_evt_blk.addrl = pmbase + PM1_STS;
 	fadt->x_pm1a_evt_blk.addrh = 0x0;
 
 	fadt->x_pm1b_evt_blk.space_id = 1;
 	fadt->x_pm1b_evt_blk.bit_width = 0;
 	fadt->x_pm1b_evt_blk.bit_offset = 0;
-	fadt->x_pm1b_evt_blk.resv = 0;
+	fadt->x_pm1b_evt_blk.access_size = 0;
 	fadt->x_pm1b_evt_blk.addrl = 0x0;
 	fadt->x_pm1b_evt_blk.addrh = 0x0;
 
 	fadt->x_pm1a_cnt_blk.space_id = 1;
 	fadt->x_pm1a_cnt_blk.bit_width = fadt->pm1_cnt_len * 8;
 	fadt->x_pm1a_cnt_blk.bit_offset = 0;
-	fadt->x_pm1a_cnt_blk.resv = 0;
+	fadt->x_pm1a_cnt_blk.access_size = 0;
 	fadt->x_pm1a_cnt_blk.addrl = pmbase + PM1_CNT;
 	fadt->x_pm1a_cnt_blk.addrh = 0x0;
 
 	fadt->x_pm1b_cnt_blk.space_id = 1;
 	fadt->x_pm1b_cnt_blk.bit_width = 0;
 	fadt->x_pm1b_cnt_blk.bit_offset = 0;
-	fadt->x_pm1b_cnt_blk.resv = 0;
+	fadt->x_pm1b_cnt_blk.access_size = 0;
 	fadt->x_pm1b_cnt_blk.addrl = 0x0;
 	fadt->x_pm1b_cnt_blk.addrh = 0x0;
 
 	fadt->x_pm2_cnt_blk.space_id = 1;
 	fadt->x_pm2_cnt_blk.bit_width = fadt->pm2_cnt_len * 8;
 	fadt->x_pm2_cnt_blk.bit_offset = 0;
-	fadt->x_pm2_cnt_blk.resv = 0;
+	fadt->x_pm2_cnt_blk.access_size = 0;
 	fadt->x_pm2_cnt_blk.addrl = pmbase + PM2A_CNT_BLK;
 	fadt->x_pm2_cnt_blk.addrh = 0x0;
 
 	fadt->x_pm_tmr_blk.space_id = 1;
 	fadt->x_pm_tmr_blk.bit_width = fadt->pm_tmr_len * 8;
 	fadt->x_pm_tmr_blk.bit_offset = 0;
-	fadt->x_pm_tmr_blk.resv = 0;
+	fadt->x_pm_tmr_blk.access_size = 0;
 	fadt->x_pm_tmr_blk.addrl = pmbase + PM1_TMR;
 	fadt->x_pm_tmr_blk.addrh = 0x0;
 
 	fadt->x_gpe0_blk.space_id = 1;
 	fadt->x_gpe0_blk.bit_width = fadt->gpe0_blk_len * 8;
 	fadt->x_gpe0_blk.bit_offset = 0;
-	fadt->x_gpe0_blk.resv = 0;
+	fadt->x_gpe0_blk.access_size = 0;
 	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.resv = 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/acpi.c b/src/soc/intel/broadwell/acpi.c
index 42d31c8141..5b737d7046 100644
--- a/src/soc/intel/broadwell/acpi.c
+++ b/src/soc/intel/broadwell/acpi.c
@@ -271,7 +271,7 @@ void acpi_fill_in_fadt(acpi_fadt_t *fadt)
 	fadt->reset_reg.space_id = 1;
 	fadt->reset_reg.bit_width = 8;
 	fadt->reset_reg.bit_offset = 0;
-	fadt->reset_reg.resv = 0;
+	fadt->reset_reg.access_size = 0;
 	fadt->reset_reg.addrl = 0xcf9;
 	fadt->reset_reg.addrh = 0;
 	fadt->reset_value = 6;
@@ -279,56 +279,56 @@ void acpi_fill_in_fadt(acpi_fadt_t *fadt)
 	fadt->x_pm1a_evt_blk.space_id = 1;
 	fadt->x_pm1a_evt_blk.bit_width = fadt->pm1_evt_len * 8;
 	fadt->x_pm1a_evt_blk.bit_offset = 0;
-	fadt->x_pm1a_evt_blk.resv = 0;
+	fadt->x_pm1a_evt_blk.access_size = 0;
 	fadt->x_pm1a_evt_blk.addrl = pmbase + PM1_STS;
 	fadt->x_pm1a_evt_blk.addrh = 0x0;
 
 	fadt->x_pm1b_evt_blk.space_id = 1;
 	fadt->x_pm1b_evt_blk.bit_width = 0;
 	fadt->x_pm1b_evt_blk.bit_offset = 0;
-	fadt->x_pm1b_evt_blk.resv = 0;
+	fadt->x_pm1b_evt_blk.access_size = 0;
 	fadt->x_pm1b_evt_blk.addrl = 0x0;
 	fadt->x_pm1b_evt_blk.addrh = 0x0;
 
 	fadt->x_pm1a_cnt_blk.space_id = 1;
 	fadt->x_pm1a_cnt_blk.bit_width = fadt->pm1_cnt_len * 8;
 	fadt->x_pm1a_cnt_blk.bit_offset = 0;
-	fadt->x_pm1a_cnt_blk.resv = 0;
+	fadt->x_pm1a_cnt_blk.access_size = 0;
 	fadt->x_pm1a_cnt_blk.addrl = pmbase + PM1_CNT;
 	fadt->x_pm1a_cnt_blk.addrh = 0x0;
 
 	fadt->x_pm1b_cnt_blk.space_id = 1;
 	fadt->x_pm1b_cnt_blk.bit_width = 0;
 	fadt->x_pm1b_cnt_blk.bit_offset = 0;
-	fadt->x_pm1b_cnt_blk.resv = 0;
+	fadt->x_pm1b_cnt_blk.access_size = 0;
 	fadt->x_pm1b_cnt_blk.addrl = 0x0;
 	fadt->x_pm1b_cnt_blk.addrh = 0x0;
 
 	fadt->x_pm2_cnt_blk.space_id = 1;
 	fadt->x_pm2_cnt_blk.bit_width = fadt->pm2_cnt_len * 8;
 	fadt->x_pm2_cnt_blk.bit_offset = 0;
-	fadt->x_pm2_cnt_blk.resv = 0;
+	fadt->x_pm2_cnt_blk.access_size = 0;
 	fadt->x_pm2_cnt_blk.addrl = pmbase + PM2_CNT;
 	fadt->x_pm2_cnt_blk.addrh = 0x0;
 
 	fadt->x_pm_tmr_blk.space_id = 1;
 	fadt->x_pm_tmr_blk.bit_width = fadt->pm_tmr_len * 8;
 	fadt->x_pm_tmr_blk.bit_offset = 0;
-	fadt->x_pm_tmr_blk.resv = 0;
+	fadt->x_pm_tmr_blk.access_size = 0;
 	fadt->x_pm_tmr_blk.addrl = pmbase + PM1_TMR;
 	fadt->x_pm_tmr_blk.addrh = 0x0;
 
 	fadt->x_gpe0_blk.space_id = 0;
 	fadt->x_gpe0_blk.bit_width = 0;
 	fadt->x_gpe0_blk.bit_offset = 0;
-	fadt->x_gpe0_blk.resv = 0;
+	fadt->x_gpe0_blk.access_size = 0;
 	fadt->x_gpe0_blk.addrl = 0;
 	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.resv = 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/cannonlake/acpi.c b/src/soc/intel/cannonlake/acpi.c
index f9f3e9699a..92a4711f23 100644
--- a/src/soc/intel/cannonlake/acpi.c
+++ b/src/soc/intel/cannonlake/acpi.c
@@ -179,7 +179,7 @@ void soc_fill_fadt(acpi_fadt_t *fadt)
 		fadt->x_pm_tmr_blk.space_id = 1;
 		fadt->x_pm_tmr_blk.bit_width = fadt->pm_tmr_len * 8;
 		fadt->x_pm_tmr_blk.bit_offset = 0;
-		fadt->x_pm_tmr_blk.resv = 0;
+		fadt->x_pm_tmr_blk.access_size = 0;
 		fadt->x_pm_tmr_blk.addrl = pmbase + PM1_TMR;
 		fadt->x_pm_tmr_blk.addrh = 0x0;
 	}
diff --git a/src/soc/intel/icelake/acpi.c b/src/soc/intel/icelake/acpi.c
index 0e13d0340a..0a26ee53ee 100644
--- a/src/soc/intel/icelake/acpi.c
+++ b/src/soc/intel/icelake/acpi.c
@@ -177,7 +177,7 @@ void soc_fill_fadt(acpi_fadt_t *fadt)
 		fadt->x_pm_tmr_blk.space_id = 1;
 		fadt->x_pm_tmr_blk.bit_width = fadt->pm_tmr_len * 8;
 		fadt->x_pm_tmr_blk.bit_offset = 0;
-		fadt->x_pm_tmr_blk.resv = 0;
+		fadt->x_pm_tmr_blk.access_size = 0;
 		fadt->x_pm_tmr_blk.addrl = pmbase + PM1_TMR;
 		fadt->x_pm_tmr_blk.addrh = 0x0;
 	}
diff --git a/src/soc/intel/skylake/acpi.c b/src/soc/intel/skylake/acpi.c
index 3ad1e505f1..36229650fa 100644
--- a/src/soc/intel/skylake/acpi.c
+++ b/src/soc/intel/skylake/acpi.c
@@ -290,7 +290,7 @@ void acpi_fill_fadt(acpi_fadt_t *fadt)
 	fadt->reset_reg.space_id = 1;
 	fadt->reset_reg.bit_width = 8;
 	fadt->reset_reg.bit_offset = 0;
-	fadt->reset_reg.resv = 0;
+	fadt->reset_reg.access_size = 0;
 	fadt->reset_reg.addrl = 0xcf9;
 	fadt->reset_reg.addrh = 0;
 	fadt->reset_value = 6;
@@ -298,56 +298,56 @@ void acpi_fill_fadt(acpi_fadt_t *fadt)
 	fadt->x_pm1a_evt_blk.space_id = 1;
 	fadt->x_pm1a_evt_blk.bit_width = fadt->pm1_evt_len * 8;
 	fadt->x_pm1a_evt_blk.bit_offset = 0;
-	fadt->x_pm1a_evt_blk.resv = 0;
+	fadt->x_pm1a_evt_blk.access_size = 0;
 	fadt->x_pm1a_evt_blk.addrl = pmbase + PM1_STS;
 	fadt->x_pm1a_evt_blk.addrh = 0x0;
 
 	fadt->x_pm1b_evt_blk.space_id = 1;
 	fadt->x_pm1b_evt_blk.bit_width = 0;
 	fadt->x_pm1b_evt_blk.bit_offset = 0;
-	fadt->x_pm1b_evt_blk.resv = 0;
+	fadt->x_pm1b_evt_blk.access_size = 0;
 	fadt->x_pm1b_evt_blk.addrl = 0x0;
 	fadt->x_pm1b_evt_blk.addrh = 0x0;
 
 	fadt->x_pm1a_cnt_blk.space_id = 1;
 	fadt->x_pm1a_cnt_blk.bit_width = fadt->pm1_cnt_len * 8;
 	fadt->x_pm1a_cnt_blk.bit_offset = 0;
-	fadt->x_pm1a_cnt_blk.resv = 0;
+	fadt->x_pm1a_cnt_blk.access_size = 0;
 	fadt->x_pm1a_cnt_blk.addrl = pmbase + PM1_CNT;
 	fadt->x_pm1a_cnt_blk.addrh = 0x0;
 
 	fadt->x_pm1b_cnt_blk.space_id = 1;
 	fadt->x_pm1b_cnt_blk.bit_width = 0;
 	fadt->x_pm1b_cnt_blk.bit_offset = 0;
-	fadt->x_pm1b_cnt_blk.resv = 0;
+	fadt->x_pm1b_cnt_blk.access_size = 0;
 	fadt->x_pm1b_cnt_blk.addrl = 0x0;
 	fadt->x_pm1b_cnt_blk.addrh = 0x0;
 
 	fadt->x_pm2_cnt_blk.space_id = 1;
 	fadt->x_pm2_cnt_blk.bit_width = fadt->pm2_cnt_len * 8;
 	fadt->x_pm2_cnt_blk.bit_offset = 0;
-	fadt->x_pm2_cnt_blk.resv = 0;
+	fadt->x_pm2_cnt_blk.access_size = 0;
 	fadt->x_pm2_cnt_blk.addrl = pmbase + PM2_CNT;
 	fadt->x_pm2_cnt_blk.addrh = 0x0;
 
 	fadt->x_pm_tmr_blk.space_id = 1;
 	fadt->x_pm_tmr_blk.bit_width = fadt->pm_tmr_len * 8;
 	fadt->x_pm_tmr_blk.bit_offset = 0;
-	fadt->x_pm_tmr_blk.resv = 0;
+	fadt->x_pm_tmr_blk.access_size = 0;
 	fadt->x_pm_tmr_blk.addrl = pmbase + PM1_TMR;
 	fadt->x_pm_tmr_blk.addrh = 0x0;
 
 	fadt->x_gpe0_blk.space_id = 0;
 	fadt->x_gpe0_blk.bit_width = 0;
 	fadt->x_gpe0_blk.bit_offset = 0;
-	fadt->x_gpe0_blk.resv = 0;
+	fadt->x_gpe0_blk.access_size = 0;
 	fadt->x_gpe0_blk.addrl = 0;
 	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.resv = 0;
+	fadt->x_gpe1_blk.access_size = 0;
 	fadt->x_gpe1_blk.addrl = 0x0;
 	fadt->x_gpe1_blk.addrh = 0x0;
 }
diff --git a/src/southbridge/amd/sb700/fadt.c b/src/southbridge/amd/sb700/fadt.c
index d5c17576cb..723f0dc361 100644
--- a/src/southbridge/amd/sb700/fadt.c
+++ b/src/southbridge/amd/sb700/fadt.c
@@ -90,7 +90,7 @@ void acpi_create_fadt(acpi_fadt_t * fadt, acpi_facs_t * facs, void *dsdt)
 	fadt->reset_reg.space_id = 1;
 	fadt->reset_reg.bit_width = 8;
 	fadt->reset_reg.bit_offset = 0;
-	fadt->reset_reg.resv = 0;
+	fadt->reset_reg.access_size = 0;
 	fadt->reset_reg.addrl = 0xcf9;
 	fadt->reset_reg.addrh = 0x0;
 
@@ -103,56 +103,56 @@ void acpi_create_fadt(acpi_fadt_t * fadt, acpi_facs_t * facs, void *dsdt)
 	fadt->x_pm1a_evt_blk.space_id = 1;
 	fadt->x_pm1a_evt_blk.bit_width = 32;
 	fadt->x_pm1a_evt_blk.bit_offset = 0;
-	fadt->x_pm1a_evt_blk.resv = 0;
+	fadt->x_pm1a_evt_blk.access_size = 0;
 	fadt->x_pm1a_evt_blk.addrl = ACPI_PM_EVT_BLK;
 	fadt->x_pm1a_evt_blk.addrh = 0x0;
 
 	fadt->x_pm1b_evt_blk.space_id = 1;
 	fadt->x_pm1b_evt_blk.bit_width = 4;
 	fadt->x_pm1b_evt_blk.bit_offset = 0;
-	fadt->x_pm1b_evt_blk.resv = 0;
+	fadt->x_pm1b_evt_blk.access_size = 0;
 	fadt->x_pm1b_evt_blk.addrl = 0x0;
 	fadt->x_pm1b_evt_blk.addrh = 0x0;
 
 	fadt->x_pm1a_cnt_blk.space_id = 1;
 	fadt->x_pm1a_cnt_blk.bit_width = 16;
 	fadt->x_pm1a_cnt_blk.bit_offset = 0;
-	fadt->x_pm1a_cnt_blk.resv = 0;
+	fadt->x_pm1a_cnt_blk.access_size = 0;
 	fadt->x_pm1a_cnt_blk.addrl = ACPI_PM1_CNT_BLK;
 	fadt->x_pm1a_cnt_blk.addrh = 0x0;
 
 	fadt->x_pm1b_cnt_blk.space_id = 1;
 	fadt->x_pm1b_cnt_blk.bit_width = 2;
 	fadt->x_pm1b_cnt_blk.bit_offset = 0;
-	fadt->x_pm1b_cnt_blk.resv = 0;
+	fadt->x_pm1b_cnt_blk.access_size = 0;
 	fadt->x_pm1b_cnt_blk.addrl = 0x0;
 	fadt->x_pm1b_cnt_blk.addrh = 0x0;
 
 	fadt->x_pm2_cnt_blk.space_id = 1;
 	fadt->x_pm2_cnt_blk.bit_width = 8;
 	fadt->x_pm2_cnt_blk.bit_offset = 0;
-	fadt->x_pm2_cnt_blk.resv = 0;
+	fadt->x_pm2_cnt_blk.access_size = 0;
 	fadt->x_pm2_cnt_blk.addrl = ACPI_PMA_CNT_BLK;
 	fadt->x_pm2_cnt_blk.addrh = 0x0;
 
 	fadt->x_pm_tmr_blk.space_id = 1;
 	fadt->x_pm_tmr_blk.bit_width = 32;
 	fadt->x_pm_tmr_blk.bit_offset = 0;
-	fadt->x_pm_tmr_blk.resv = 0;
+	fadt->x_pm_tmr_blk.access_size = 0;
 	fadt->x_pm_tmr_blk.addrl = ACPI_PM_TMR_BLK;
 	fadt->x_pm_tmr_blk.addrh = 0x0;
 
 	fadt->x_gpe0_blk.space_id = 1;
 	fadt->x_gpe0_blk.bit_width = 64;
 	fadt->x_gpe0_blk.bit_offset = 0;
-	fadt->x_gpe0_blk.resv = 0;
+	fadt->x_gpe0_blk.access_size = 0;
 	fadt->x_gpe0_blk.addrl = ACPI_GPE0_BLK;
 	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.resv = 0;
+	fadt->x_gpe1_blk.access_size = 0;
 	fadt->x_gpe1_blk.addrl = 0;
 	fadt->x_gpe1_blk.addrh = 0x0;
 
diff --git a/src/southbridge/amd/sb800/fadt.c b/src/southbridge/amd/sb800/fadt.c
index ce279814cb..bb0a070581 100644
--- a/src/southbridge/amd/sb800/fadt.c
+++ b/src/southbridge/amd/sb800/fadt.c
@@ -90,7 +90,7 @@ void acpi_create_fadt(acpi_fadt_t * fadt, acpi_facs_t * facs, void *dsdt)
 	fadt->reset_reg.space_id = 1;
 	fadt->reset_reg.bit_width = 8;
 	fadt->reset_reg.bit_offset = 0;
-	fadt->reset_reg.resv = 0;
+	fadt->reset_reg.access_size = 0;
 	fadt->reset_reg.addrl = 0xcf9;
 	fadt->reset_reg.addrh = 0x0;
 
@@ -103,56 +103,56 @@ void acpi_create_fadt(acpi_fadt_t * fadt, acpi_facs_t * facs, void *dsdt)
 	fadt->x_pm1a_evt_blk.space_id = 1;
 	fadt->x_pm1a_evt_blk.bit_width = 32;
 	fadt->x_pm1a_evt_blk.bit_offset = 0;
-	fadt->x_pm1a_evt_blk.resv = 0;
+	fadt->x_pm1a_evt_blk.access_size = 0;
 	fadt->x_pm1a_evt_blk.addrl = ACPI_PM_EVT_BLK;
 	fadt->x_pm1a_evt_blk.addrh = 0x0;
 
 	fadt->x_pm1b_evt_blk.space_id = 1;
 	fadt->x_pm1b_evt_blk.bit_width = 4;
 	fadt->x_pm1b_evt_blk.bit_offset = 0;
-	fadt->x_pm1b_evt_blk.resv = 0;
+	fadt->x_pm1b_evt_blk.access_size = 0;
 	fadt->x_pm1b_evt_blk.addrl = 0x0;
 	fadt->x_pm1b_evt_blk.addrh = 0x0;
 
 	fadt->x_pm1a_cnt_blk.space_id = 1;
 	fadt->x_pm1a_cnt_blk.bit_width = 16;
 	fadt->x_pm1a_cnt_blk.bit_offset = 0;
-	fadt->x_pm1a_cnt_blk.resv = 0;
+	fadt->x_pm1a_cnt_blk.access_size = 0;
 	fadt->x_pm1a_cnt_blk.addrl = ACPI_PM1_CNT_BLK;
 	fadt->x_pm1a_cnt_blk.addrh = 0x0;
 
 	fadt->x_pm1b_cnt_blk.space_id = 1;
 	fadt->x_pm1b_cnt_blk.bit_width = 2;
 	fadt->x_pm1b_cnt_blk.bit_offset = 0;
-	fadt->x_pm1b_cnt_blk.resv = 0;
+	fadt->x_pm1b_cnt_blk.access_size = 0;
 	fadt->x_pm1b_cnt_blk.addrl = 0x0;
 	fadt->x_pm1b_cnt_blk.addrh = 0x0;
 
 	fadt->x_pm2_cnt_blk.space_id = 1;
 	fadt->x_pm2_cnt_blk.bit_width = 0;
 	fadt->x_pm2_cnt_blk.bit_offset = 0;
-	fadt->x_pm2_cnt_blk.resv = 0;
+	fadt->x_pm2_cnt_blk.access_size = 0;
 	fadt->x_pm2_cnt_blk.addrl = ACPI_PMA_CNT_BLK;
 	fadt->x_pm2_cnt_blk.addrh = 0x0;
 
 	fadt->x_pm_tmr_blk.space_id = 1;
 	fadt->x_pm_tmr_blk.bit_width = 32;
 	fadt->x_pm_tmr_blk.bit_offset = 0;
-	fadt->x_pm_tmr_blk.resv = 0;
+	fadt->x_pm_tmr_blk.access_size = 0;
 	fadt->x_pm_tmr_blk.addrl = ACPI_PM_TMR_BLK;
 	fadt->x_pm_tmr_blk.addrh = 0x0;
 
 	fadt->x_gpe0_blk.space_id = 1;
 	fadt->x_gpe0_blk.bit_width = 32;
 	fadt->x_gpe0_blk.bit_offset = 0;
-	fadt->x_gpe0_blk.resv = 0;
+	fadt->x_gpe0_blk.access_size = 0;
 	fadt->x_gpe0_blk.addrl = ACPI_GPE0_BLK;
 	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.resv = 0;
+	fadt->x_gpe1_blk.access_size = 0;
 	fadt->x_gpe1_blk.addrl = 0;
 	fadt->x_gpe1_blk.addrh = 0x0;
 
diff --git a/src/southbridge/intel/i82371eb/fadt.c b/src/southbridge/intel/i82371eb/fadt.c
index 32ae9ffea8..a05e6688cc 100644
--- a/src/southbridge/intel/i82371eb/fadt.c
+++ b/src/southbridge/intel/i82371eb/fadt.c
@@ -150,7 +150,7 @@ void acpi_create_fadt(acpi_fadt_t *fadt, acpi_facs_t *facs, void *dsdt)
 	fadt->reset_reg.space_id = 0;
 	fadt->reset_reg.bit_width = 0;
 	fadt->reset_reg.bit_offset = 0;
-	fadt->reset_reg.resv = 0;
+	fadt->reset_reg.access_size = 0;
 	fadt->reset_reg.addrl = 0x0;
 	fadt->reset_reg.addrh = 0x0;
 	fadt->reset_value = 0;
@@ -163,56 +163,56 @@ void acpi_create_fadt(acpi_fadt_t *fadt, acpi_facs_t *facs, void *dsdt)
 	fadt->x_pm1a_evt_blk.space_id = 1;
 	fadt->x_pm1a_evt_blk.bit_width = fadt->pm1_evt_len * 8;
 	fadt->x_pm1a_evt_blk.bit_offset = 0;
-	fadt->x_pm1a_evt_blk.resv = 0;
+	fadt->x_pm1a_evt_blk.access_size = 0;
 	fadt->x_pm1a_evt_blk.addrl = fadt->pm1a_evt_blk;
 	fadt->x_pm1a_evt_blk.addrh = 0x0;
 
 	fadt->x_pm1b_evt_blk.space_id = 1;
 	fadt->x_pm1b_evt_blk.bit_width = fadt->pm1_evt_len * 8;
 	fadt->x_pm1b_evt_blk.bit_offset = 0;
-	fadt->x_pm1b_evt_blk.resv = 0;
+	fadt->x_pm1b_evt_blk.access_size = 0;
 	fadt->x_pm1b_evt_blk.addrl = fadt->pm1b_evt_blk;
 	fadt->x_pm1b_evt_blk.addrh = 0x0;
 
 	fadt->x_pm1a_cnt_blk.space_id = 1;
 	fadt->x_pm1a_cnt_blk.bit_width = fadt->pm1_cnt_len * 8;
 	fadt->x_pm1a_cnt_blk.bit_offset = 0;
-	fadt->x_pm1a_cnt_blk.resv = 0;
+	fadt->x_pm1a_cnt_blk.access_size = 0;
 	fadt->x_pm1a_cnt_blk.addrl = fadt->pm1a_cnt_blk;
 	fadt->x_pm1a_cnt_blk.addrh = 0x0;
 
 	fadt->x_pm1b_cnt_blk.space_id = 1;
 	fadt->x_pm1b_cnt_blk.bit_width = fadt->pm1_cnt_len * 8;
 	fadt->x_pm1b_cnt_blk.bit_offset = 0;
-	fadt->x_pm1b_cnt_blk.resv = 0;
+	fadt->x_pm1b_cnt_blk.access_size = 0;
 	fadt->x_pm1b_cnt_blk.addrl = fadt->pm1b_cnt_blk;
 	fadt->x_pm1b_cnt_blk.addrh = 0x0;
 
 	fadt->x_pm2_cnt_blk.space_id = 1;
 	fadt->x_pm2_cnt_blk.bit_width = fadt->pm2_cnt_len * 8;
 	fadt->x_pm2_cnt_blk.bit_offset = 0;
-	fadt->x_pm2_cnt_blk.resv = 0;
+	fadt->x_pm2_cnt_blk.access_size = 0;
 	fadt->x_pm2_cnt_blk.addrl = fadt->pm2_cnt_blk;
 	fadt->x_pm2_cnt_blk.addrh = 0x0;
 
 	fadt->x_pm_tmr_blk.space_id = 1;
 	fadt->x_pm_tmr_blk.bit_width = fadt->pm_tmr_len * 8;
 	fadt->x_pm_tmr_blk.bit_offset = 0;
-	fadt->x_pm_tmr_blk.resv = 0;
+	fadt->x_pm_tmr_blk.access_size = 0;
 	fadt->x_pm_tmr_blk.addrl = fadt->pm_tmr_blk;
 	fadt->x_pm_tmr_blk.addrh = 0x0;
 
 	fadt->x_gpe0_blk.space_id = 1;
 	fadt->x_gpe0_blk.bit_width = fadt->gpe0_blk_len * 8;
 	fadt->x_gpe0_blk.bit_offset = 0;
-	fadt->x_gpe0_blk.resv = 0;
+	fadt->x_gpe0_blk.access_size = 0;
 	fadt->x_gpe0_blk.addrl = fadt->gpe0_blk;
 	fadt->x_gpe0_blk.addrh = 0x0;
 
 	fadt->x_gpe1_blk.space_id = 1;
 	fadt->x_gpe1_blk.bit_width = fadt->gpe1_blk_len * 8;
 	fadt->x_gpe1_blk.bit_offset = 0;
-	fadt->x_gpe1_blk.resv = 0;
+	fadt->x_gpe1_blk.access_size = 0;
 	fadt->x_gpe1_blk.addrl = fadt->gpe1_blk;
 	fadt->x_gpe1_blk.addrh = 0x0;
 
diff --git a/src/southbridge/nvidia/ck804/fadt.c b/src/southbridge/nvidia/ck804/fadt.c
index ea937899d3..6a096617f3 100644
--- a/src/southbridge/nvidia/ck804/fadt.c
+++ b/src/southbridge/nvidia/ck804/fadt.c
@@ -92,7 +92,7 @@ void acpi_create_fadt(acpi_fadt_t * fadt, acpi_facs_t * facs, void *dsdt)
 	fadt->reset_reg.space_id = 1;
 	fadt->reset_reg.bit_width = 8;
 	fadt->reset_reg.bit_offset = 0;
-	fadt->reset_reg.resv = 0;
+	fadt->reset_reg.access_size = 0;
 	fadt->reset_reg.addrl = 0xcf9;
 	fadt->reset_reg.addrh = 0x0;
 
@@ -105,56 +105,56 @@ void acpi_create_fadt(acpi_fadt_t * fadt, acpi_facs_t * facs, void *dsdt)
 	fadt->x_pm1a_evt_blk.space_id = 1;
 	fadt->x_pm1a_evt_blk.bit_width = 32;
 	fadt->x_pm1a_evt_blk.bit_offset = 0;
-	fadt->x_pm1a_evt_blk.resv = 0;
+	fadt->x_pm1a_evt_blk.access_size = 0;
 	fadt->x_pm1a_evt_blk.addrl = pm_base;
 	fadt->x_pm1a_evt_blk.addrh = 0x0;
 
 	fadt->x_pm1b_evt_blk.space_id = 1;
 	fadt->x_pm1b_evt_blk.bit_width = 4;
 	fadt->x_pm1b_evt_blk.bit_offset = 0;
-	fadt->x_pm1b_evt_blk.resv = 0;
+	fadt->x_pm1b_evt_blk.access_size = 0;
 	fadt->x_pm1b_evt_blk.addrl = 0x0;
 	fadt->x_pm1b_evt_blk.addrh = 0x0;
 
 	fadt->x_pm1a_cnt_blk.space_id = 1;
 	fadt->x_pm1a_cnt_blk.bit_width = 16;
 	fadt->x_pm1a_cnt_blk.bit_offset = 0;
-	fadt->x_pm1a_cnt_blk.resv = 0;
+	fadt->x_pm1a_cnt_blk.access_size = 0;
 	fadt->x_pm1a_cnt_blk.addrl = pm_base + 4;
 	fadt->x_pm1a_cnt_blk.addrh = 0x0;
 
 	fadt->x_pm1b_cnt_blk.space_id = 1;
 	fadt->x_pm1b_cnt_blk.bit_width = 2;
 	fadt->x_pm1b_cnt_blk.bit_offset = 0;
-	fadt->x_pm1b_cnt_blk.resv = 0;
+	fadt->x_pm1b_cnt_blk.access_size = 0;
 	fadt->x_pm1b_cnt_blk.addrl = 0x0;
 	fadt->x_pm1b_cnt_blk.addrh = 0x0;
 
 	fadt->x_pm2_cnt_blk.space_id = 1;
 	fadt->x_pm2_cnt_blk.bit_width = 0;
 	fadt->x_pm2_cnt_blk.bit_offset = 0;
-	fadt->x_pm2_cnt_blk.resv = 0;
+	fadt->x_pm2_cnt_blk.access_size = 0;
 	fadt->x_pm2_cnt_blk.addrl = 0x0;
 	fadt->x_pm2_cnt_blk.addrh = 0x0;
 
 	fadt->x_pm_tmr_blk.space_id = 1;
 	fadt->x_pm_tmr_blk.bit_width = 32;
 	fadt->x_pm_tmr_blk.bit_offset = 0;
-	fadt->x_pm_tmr_blk.resv = 0;
+	fadt->x_pm_tmr_blk.access_size = 0;
 	fadt->x_pm_tmr_blk.addrl = pm_base + 0x08;
 	fadt->x_pm_tmr_blk.addrh = 0x0;
 
 	fadt->x_gpe0_blk.space_id = 1;
 	fadt->x_gpe0_blk.bit_width = 32;
 	fadt->x_gpe0_blk.bit_offset = 0;
-	fadt->x_gpe0_blk.resv = 0;
+	fadt->x_gpe0_blk.access_size = 0;
 	fadt->x_gpe0_blk.addrl = pm_base + 0x20;
 	fadt->x_gpe0_blk.addrh = 0x0;
 
 	fadt->x_gpe1_blk.space_id = 1;
 	fadt->x_gpe1_blk.bit_width = 64;
 	fadt->x_gpe1_blk.bit_offset = 16;
-	fadt->x_gpe1_blk.resv = 0;
+	fadt->x_gpe1_blk.access_size = 0;
 	fadt->x_gpe1_blk.addrl = pm_base + 0xb0;
 	fadt->x_gpe1_blk.addrh = 0x0;
 #endif
diff --git a/src/southbridge/nvidia/mcp55/fadt.c b/src/southbridge/nvidia/mcp55/fadt.c
index 5b00861264..4d2d396957 100644
--- a/src/southbridge/nvidia/mcp55/fadt.c
+++ b/src/southbridge/nvidia/mcp55/fadt.c
@@ -100,7 +100,7 @@ void acpi_create_fadt(acpi_fadt_t *fadt, acpi_facs_t *facs, void *dsdt)
 	fadt->reset_reg.space_id = 0;
 	fadt->reset_reg.bit_width = 0;
 	fadt->reset_reg.bit_offset = 0;
-	fadt->reset_reg.resv = 0;
+	fadt->reset_reg.access_size = 0;
 	fadt->reset_reg.addrl = 0x0;
 	fadt->reset_reg.addrh = 0x0;
 
@@ -113,56 +113,56 @@ void acpi_create_fadt(acpi_fadt_t *fadt, acpi_facs_t *facs, void *dsdt)
 	fadt->x_pm1a_evt_blk.space_id = 1;
 	fadt->x_pm1a_evt_blk.bit_width = fadt->pm1_evt_len * 8;
 	fadt->x_pm1a_evt_blk.bit_offset = 0;
-	fadt->x_pm1a_evt_blk.resv = 0;
+	fadt->x_pm1a_evt_blk.access_size = 0;
 	fadt->x_pm1a_evt_blk.addrl = fadt->pm1a_evt_blk;
 	fadt->x_pm1a_evt_blk.addrh = 0x0;
 
 	fadt->x_pm1b_evt_blk.space_id = 1;
 	fadt->x_pm1b_evt_blk.bit_width = fadt->pm1_evt_len * 8;
 	fadt->x_pm1b_evt_blk.bit_offset = 0;
-	fadt->x_pm1b_evt_blk.resv = 0;
+	fadt->x_pm1b_evt_blk.access_size = 0;
 	fadt->x_pm1b_evt_blk.addrl = fadt->pm1b_evt_blk;
 	fadt->x_pm1b_evt_blk.addrh = 0x0;
 
 	fadt->x_pm1a_cnt_blk.space_id = 1;
 	fadt->x_pm1a_cnt_blk.bit_width = fadt->pm1_cnt_len * 8;
 	fadt->x_pm1a_cnt_blk.bit_offset = 0;
-	fadt->x_pm1a_cnt_blk.resv = 0;
+	fadt->x_pm1a_cnt_blk.access_size = 0;
 	fadt->x_pm1a_cnt_blk.addrl = fadt->pm1a_cnt_blk;
 	fadt->x_pm1a_cnt_blk.addrh = 0x0;
 
 	fadt->x_pm1b_cnt_blk.space_id = 1;
 	fadt->x_pm1b_cnt_blk.bit_width = fadt->pm1_cnt_len * 8;
 	fadt->x_pm1b_cnt_blk.bit_offset = 0;
-	fadt->x_pm1b_cnt_blk.resv = 0;
+	fadt->x_pm1b_cnt_blk.access_size = 0;
 	fadt->x_pm1b_cnt_blk.addrl = fadt->pm1b_cnt_blk;
 	fadt->x_pm1b_cnt_blk.addrh = 0x0;
 
 	fadt->x_pm2_cnt_blk.space_id = 1;
 	fadt->x_pm2_cnt_blk.bit_width = fadt->pm2_cnt_len * 8;
 	fadt->x_pm2_cnt_blk.bit_offset = 0;
-	fadt->x_pm2_cnt_blk.resv = 0;
+	fadt->x_pm2_cnt_blk.access_size = 0;
 	fadt->x_pm2_cnt_blk.addrl = fadt->pm2_cnt_blk;
 	fadt->x_pm2_cnt_blk.addrh = 0x0;
 
 	fadt->x_pm_tmr_blk.space_id = 1;
 	fadt->x_pm_tmr_blk.bit_width = fadt->pm_tmr_len * 8;
 	fadt->x_pm_tmr_blk.bit_offset = 0;
-	fadt->x_pm_tmr_blk.resv = 0;
+	fadt->x_pm_tmr_blk.access_size = 0;
 	fadt->x_pm_tmr_blk.addrl = fadt->pm_tmr_blk;
 	fadt->x_pm_tmr_blk.addrh = 0x0;
 
 	fadt->x_gpe0_blk.space_id = 1;
 	fadt->x_gpe0_blk.bit_width = fadt->gpe0_blk_len * 8;
 	fadt->x_gpe0_blk.bit_offset = 0;
-	fadt->x_gpe0_blk.resv = 0;
+	fadt->x_gpe0_blk.access_size = 0;
 	fadt->x_gpe0_blk.addrl = fadt->gpe0_blk;
 	fadt->x_gpe0_blk.addrh = 0x0;
 
 	fadt->x_gpe1_blk.space_id = 1;
 	fadt->x_gpe1_blk.bit_width = fadt->gpe1_blk_len * 8;
 	fadt->x_gpe1_blk.bit_offset = 0;
-	fadt->x_gpe1_blk.resv = 0;
+	fadt->x_gpe1_blk.access_size = 0;
 	fadt->x_gpe1_blk.addrl = fadt->gpe1_blk;
 	fadt->x_gpe1_blk.addrh = 0x0;