From ac1f548d16c01807a8e69e0f0e40fea5cccdd1cc Mon Sep 17 00:00:00 2001
From: Myles Watson <mylesgw@gmail.com>
Date: Mon, 25 Feb 2008 22:56:08 +0000
Subject: [PATCH] This patch adds a config option for zero-filling coreboot.rom
 after adding a payload.  It depends on having a payload so that you can't end
 up with a file with no payload and no possiblility to add one. The default is
 no zero-filling.

I also added a message "ZEROING lar -z ./coreboot.rom"

Myles

Signed-off-by: Myles Watson <mylesgw@gmail.com>
Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>


git-svn-id: svn://coreboot.org/repository/coreboot-v3@621 f3766cd6-281f-0410-b1cd-43a5c92072e9
---
 Kconfig           | 8 ++++++++
 arch/x86/Makefile | 4 ++++
 2 files changed, 12 insertions(+)

diff --git a/Kconfig b/Kconfig
index 295c30a0c0..c889de8670 100644
--- a/Kconfig
+++ b/Kconfig
@@ -148,5 +148,13 @@ config PAYLOAD_PREPARSE_ELF
 	  payload in, coreboot can not parse it. We hope to remove ELF
 	  entirely in the future.
 
+config ZERO_AFTER_PAYLOAD
+	bool "Zero fill lar after adding the payload"
+	depends PAYLOAD_ELF
+	default n
+	help
+	  This option speeds booting but makes it so that no further files may
+	  be added to the lar.
+
 endmenu
 
diff --git a/arch/x86/Makefile b/arch/x86/Makefile
index f95d465674..31a6222b93 100644
--- a/arch/x86/Makefile
+++ b/arch/x86/Makefile
@@ -86,6 +86,10 @@ else
 	$(Q)cd $(obj)/lar.tmp && \
 		../util/lar/lar $(PARSEELF) $(COMPRESSFLAG) -a \
 			../coreboot.rom normal/payload;
+endif
+ifeq ($(CONFIG_ZERO_AFTER_PAYLOAD),y)
+	$(Q)printf "  ZEROING lar -z ./coreboot.rom\n"
+	$(Q)cd $(obj) && ./util/lar/lar -z ./coreboot.rom
 endif
 	$(Q)# QEMU wants bios.bin:
 	$(Q)# Run "qemu -L build/ -serial stdio -hda /dev/zero".