ACPI: Refactor ChromeOS specific ACPI GNVS

The layout of GNVS has expectation for a fixed size
array for chromeos_acpi_t. This allows us to reduce
the exposure of <chromeos/gnvs.h>.

If chromeos_acpi_t was the last entry in struct global_nvs
padding at the end is also removed.

If device_nvs_t exists, place a properly sized reserve for
chromeos_acpi_t in the middle.

Allocation from cbmem is adjusted such that it matches exactly
the OperationRegion size defined inside the ASL.

Change-Id: If234075e11335ce958ce136dd3fe162f7e5afdf7
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/48788
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>

6 files changed, 3 insertions, 39 deletions

diff --git a/src/soc/intel/apollolake/include/soc/nvs.h b/src/soc/intel/apollolake/include/soc/nvs.h
index ab7021cf1a..ae1ae42e1d 100644
--- a/src/soc/intel/apollolake/include/soc/nvs.h
+++ b/src/soc/intel/apollolake/include/soc/nvs.h
@@ -10,8 +10,6 @@
 #define _SOC_APOLLOLAKE_NVS_H_
 
 #include <stdint.h>
-#include <commonlib/helpers.h>
-#include <vendorcode/google/chromeos/gnvs.h>
 
 struct __packed global_nvs {
 	/* Miscellaneous */
@@ -35,12 +33,6 @@ struct __packed global_nvs {
 	uint64_t	elng; /* 0x35 - 0x3C EPC Length */
 	uint64_t	a4gb; /* 0x3D - 0x44 Base of above 4GB MMIO Resource */
 	uint64_t	a4gs; /* 0x45 - 0x4C Length of above 4GB MMIO Resource */
-	uint8_t		unused[179];
-
-	/* ChromeOS specific (0x100 - 0xfff) */
-	chromeos_acpi_t chromeos;
 };
 
-check_member(global_nvs, chromeos, GNVS_CHROMEOS_ACPI_OFFSET);
-
 #endif	/* _SOC_APOLLOLAKE_NVS_H_ */
diff --git a/src/soc/intel/baytrail/include/soc/nvs.h b/src/soc/intel/baytrail/include/soc/nvs.h
index 6eaf2c804c..1640886d6c 100644
--- a/src/soc/intel/baytrail/include/soc/nvs.h
+++ b/src/soc/intel/baytrail/include/soc/nvs.h
@@ -4,8 +4,6 @@
 #define _BAYTRAIL_NVS_H_
 
 #include <stdint.h>
-#include <commonlib/helpers.h>
-#include <vendorcode/google/chromeos/gnvs.h>
 #include <soc/device_nvs.h>
 
 struct __packed global_nvs {
@@ -50,12 +48,10 @@ struct __packed global_nvs {
 	u8	unused[76];
 
 	/* ChromeOS specific (0x100-0xfff) */
-	chromeos_acpi_t chromeos;
+	u8	chromeos_reserve[0xf00];
 
 	/* Baytrail LPSS (0x1000) */
 	device_nvs_t dev;
 };
 
-check_member(global_nvs, chromeos, GNVS_CHROMEOS_ACPI_OFFSET);
-
 #endif /* _BAYTRAIL_NVS_H_ */
diff --git a/src/soc/intel/braswell/include/soc/nvs.h b/src/soc/intel/braswell/include/soc/nvs.h
index 2184245aa8..2ea114b00c 100644
--- a/src/soc/intel/braswell/include/soc/nvs.h
+++ b/src/soc/intel/braswell/include/soc/nvs.h
@@ -4,9 +4,7 @@
 #define _SOC_NVS_H_
 
 #include <stdint.h>
-#include <commonlib/helpers.h>
 #include <soc/device_nvs.h>
-#include <vendorcode/google/chromeos/gnvs.h>
 
 struct __packed global_nvs {
 	/* Miscellaneous */
@@ -52,12 +50,10 @@ struct __packed global_nvs {
 	u8	unused[76];
 
 	/* ChromeOS specific (0x100-0xfff) */
-	chromeos_acpi_t chromeos;
+	u8	chromeos_reserve[0xf00];
 
 	/* LPSS (0x1000) */
 	device_nvs_t dev;
 };
 
-check_member(global_nvs, chromeos, GNVS_CHROMEOS_ACPI_OFFSET);
-
 #endif /* _SOC_NVS_H_ */
diff --git a/src/soc/intel/broadwell/include/soc/nvs.h b/src/soc/intel/broadwell/include/soc/nvs.h
index 2fe7bc8b70..e0e805253a 100644
--- a/src/soc/intel/broadwell/include/soc/nvs.h
+++ b/src/soc/intel/broadwell/include/soc/nvs.h
@@ -4,9 +4,7 @@
 #define _BROADWELL_NVS_H_
 
 #include <stdint.h>
-#include <commonlib/helpers.h>
 #include <soc/device_nvs.h>
-#include <vendorcode/google/chromeos/gnvs.h>
 
 struct __packed global_nvs {
 	/* Miscellaneous */
@@ -42,12 +40,10 @@ struct __packed global_nvs {
 	u8	unused2[76];
 
 	/* ChromeOS specific (0x100 - 0xfff) */
-	chromeos_acpi_t chromeos;
+	u8	chromeos_reserve[0xf00];
 
 	/* Device specific (0x1000) */
 	device_nvs_t dev;
 };
 
-check_member(global_nvs, chromeos, GNVS_CHROMEOS_ACPI_OFFSET);
-
 #endif
diff --git a/src/soc/intel/common/block/include/intelblocks/nvs.h b/src/soc/intel/common/block/include/intelblocks/nvs.h
index 38edfc769c..2f3ac1cc0b 100644
--- a/src/soc/intel/common/block/include/intelblocks/nvs.h
+++ b/src/soc/intel/common/block/include/intelblocks/nvs.h
@@ -4,8 +4,6 @@
 #define SOC_INTEL_COMMON_BLOCK_NVS_H
 
 #include <stdint.h>
-#include <commonlib/helpers.h>
-#include <vendorcode/google/chromeos/gnvs.h>
 
 struct __packed global_nvs {
 	/* Miscellaneous */
@@ -28,12 +26,6 @@ struct __packed global_nvs {
 	u8	uior; /* 0x2f - UART debug controller init on S3 resume */
 	u64	a4gb; /* 0x30 - 0x37 Base of above 4GB MMIO Resource */
 	u64	a4gs; /* 0x38 - 0x3f Length of above 4GB MMIO Resource */
-	u8	unused[192];
-
-	/* ChromeOS specific (0x100 - 0xfff) */
-	chromeos_acpi_t	chromeos;
 };
 
-check_member(global_nvs, chromeos, GNVS_CHROMEOS_ACPI_OFFSET);
-
 #endif
diff --git a/src/soc/intel/skylake/include/soc/nvs.h b/src/soc/intel/skylake/include/soc/nvs.h
index 303427653c..3d48d4d486 100644
--- a/src/soc/intel/skylake/include/soc/nvs.h
+++ b/src/soc/intel/skylake/include/soc/nvs.h
@@ -4,8 +4,6 @@
 #define _SOC_NVS_H_
 
 #include <stdint.h>
-#include <commonlib/helpers.h>
-#include <vendorcode/google/chromeos/gnvs.h>
 
 struct __packed global_nvs {
 	/* Miscellaneous */
@@ -48,12 +46,6 @@ struct __packed global_nvs {
 	u64	elng; /* 0x4C - 0x53 EPC Length */
 	u64	a4gb; /* 0x54 - 0x5B Base of above 4GB MMIO Resource */
 	u64	a4gs; /* 0x5C - 0x63 Length of above 4GB MMIO Resource */
-	u8	rsvd[156];
-
-	/* ChromeOS specific (0x100 - 0xfff) */
-	chromeos_acpi_t chromeos;
 };
 
-check_member(global_nvs, chromeos, GNVS_CHROMEOS_ACPI_OFFSET);
-
 #endif