Convert CONFIG_SYS_MEM_TOP_HIDE to Kconfig

[platform/kernel/u-boot.git] / Kconfig

diff --git a/Kconfig b/Kconfig
index b45e60a..e269856 100644 (file)
--- a/Kconfig
+++ b/Kconfig
@@ -489,6 +489,17 @@ config STACK_SIZE
          by the UEFI sub-system. On some boards initrd_high is calculated as
          base stack pointer minus this stack size.
 
+config SYS_MEM_TOP_HIDE
+       hex "Exclude some memory from U-Boot / OS information"
+       default 0x0
+       help
+         If set, this specified memory area will get subtracted from the top
+         (end) of RAM and won't get "touched" at all by U-Boot. By fixing up
+         gd->ram_size the OS / next stage should gets passed the now
+         "corrected" memory size and won't touch it either.
+         WARNING: Please make sure that this value is a multiple of the OS
+         page size.
+
 config SYS_HAS_SRAM
        bool
        default y if TARGET_PIC32MZDASK