efi_loader: make variable store size customizable
Currently the size of the buffer to keep UEFI variables in memory is fixed
at 16384 bytes. This size has proven to be too small for some use cases.
Make the size of the memory buffer for UEFI variables customizable.
Reported-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Acked-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
diff --git a/lib/efi_loader/Kconfig b/lib/efi_loader/Kconfig
index 073d90c..e780491 100644
--- a/lib/efi_loader/Kconfig
+++ b/lib/efi_loader/Kconfig
@@ -77,6 +77,20 @@
endif
+config EFI_VAR_BUF_SIZE
+ int "Memory size of the UEFI variable store"
+ default 16384
+ range 4096 2147483647
+ help
+ This defines the size in bytes of the memory area reserved for keeping
+ UEFI variables.
+
+ When using StandAloneMM (CONFIG_EFI_MM_COMM_TEE=y) this value should
+ match the value of PcdFlashNvStorageVariableSize used to compile the
+ StandAloneMM module.
+
+ Minimum 4096, default 16384.
+
config EFI_GET_TIME
bool "GetTime() runtime service"
depends on DM_RTC