AMD S3: Introduce Kconfig variable 'S3_DATA_SIZE'

Currently the size of the volatile storage for S3 reserved in the
image is hardcoded to 32768 bytes. Make that configurable by
introducing the Kconfig 'S3_DATA_SIZE'.

As the storage space is needed for storing non-volatile, volatile and
MTRR data, add a check if the size is big enough.

Change-Id: I9152797cf0045c8da48109a9d760e417717686db
Signed-off-by: Zheng Bao <zheng.bao@amd.com>
Signed-off-by: Zheng Bao <fishbaozi@gmail.com>
Reviewed-on: http://review.coreboot.org/2383
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>

5 files changed, 33 insertions, 1 deletions

diff --git a/src/southbridge/amd/Makefile.inc b/src/southbridge/amd/Makefile.inc
index 5f5431492c..cce4702058 100644
--- a/src/southbridge/amd/Makefile.inc
+++ b/src/southbridge/amd/Makefile.inc
@@ -22,7 +22,7 @@ ifeq ($(CONFIG_CPU_AMD_AGESA), y)
 $(obj)/coreboot_s3nv.rom: $(obj)/config.h
 	echo "    S3 NVRAM   $(CONFIG_S3_DATA_POS) (S3 storage area)"
 	# force C locale, so cygwin awk doesn't try to interpret the 0xff below as UTF-8 (or worse)
-	LC_ALL=C awk 'BEGIN {for (i=0; i<32768; i++) {printf "%c", 255}}' > $@.tmp
+	printf %d $(CONFIG_S3_DATA_SIZE) | LC_ALL=C awk '{for (i=0; i<$$1; i++) {printf "%c", 255}}' > $@.tmp
 	mv $@.tmp $@
 
 cbfs-files-y += s3nv
diff --git a/src/southbridge/amd/agesa/hudson/Kconfig b/src/southbridge/amd/agesa/hudson/Kconfig
index a7436b50fc..f9013196f2 100644
--- a/src/southbridge/amd/agesa/hudson/Kconfig
+++ b/src/southbridge/amd/agesa/hudson/Kconfig
@@ -209,6 +209,14 @@ config S3_DATA_POS
 	  For a system with S3 feature, the BIOS needs to save some data to
 	  non-volatile storage at cold boot stage.
 
+config S3_DATA_SIZE
+	int "S3 volatile storage size"
+	default 32768
+	depends on HAVE_ACPI_RESUME
+	help
+	  For a system with S3 feature, the BIOS needs to save some data to
+	  non-volatile storage at cold boot stage.
+
 config HUDSON_LEGACY_FREE
 	bool "System is legacy free"
 	help
diff --git a/src/southbridge/amd/cimx/sb700/Kconfig b/src/southbridge/amd/cimx/sb700/Kconfig
index 706309d389..37e9614ce5 100644
--- a/src/southbridge/amd/cimx/sb700/Kconfig
+++ b/src/southbridge/amd/cimx/sb700/Kconfig
@@ -68,5 +68,13 @@ config S3_DATA_POS
 	  For a system with S3 feature, the BIOS needs to save some data to
 	  non-volatile storage at cold boot stage.
 
+config S3_DATA_SIZE
+	int "S3 volatile storage size"
+	default 32768
+	depends on HAVE_ACPI_RESUME
+	help
+	  For a system with S3 feature, the BIOS needs to save some data to
+	  non-volatile storage at cold boot stage.
+
 endif #SOUTHBRIDGE_AMD_CIMX_SB700
 
diff --git a/src/southbridge/amd/cimx/sb800/Kconfig b/src/southbridge/amd/cimx/sb800/Kconfig
index f56e017d2d..2af0b32df6 100644
--- a/src/southbridge/amd/cimx/sb800/Kconfig
+++ b/src/southbridge/amd/cimx/sb800/Kconfig
@@ -130,6 +130,14 @@ config S3_DATA_POS
 	  For a system with S3 feature, the BIOS needs to save some data to
 	  non-volatile storage at cold boot stage.
 
+config S3_DATA_SIZE
+	int "S3 volatile storage size"
+	default 32768
+	depends on HAVE_ACPI_RESUME
+	help
+	  For a system with S3 feature, the BIOS needs to save some data to
+	  non-volatile storage at cold boot stage.
+
 config SB800_IMC_FWM
 	bool "Add IMC firmware"
 	default n
diff --git a/src/southbridge/amd/cimx/sb900/Kconfig b/src/southbridge/amd/cimx/sb900/Kconfig
index 3cadba1293..c886504e58 100755
--- a/src/southbridge/amd/cimx/sb900/Kconfig
+++ b/src/southbridge/amd/cimx/sb900/Kconfig
@@ -61,5 +61,13 @@ config S3_DATA_POS
 	  For a system with S3 feature, the BIOS needs to save some data to
 	  non-volatile storage at cold boot stage.
 
+config S3_DATA_SIZE
+	int "S3 volatile storage size"
+	default 32768
+	depends on HAVE_ACPI_RESUME
+	help
+	  For a system with S3 feature, the BIOS needs to save some data to
+	  non-volatile storage at cold boot stage.
+
 endif #SOUTHBRIDGE_AMD_CIMX_SB900