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authorColin Percival <cperciva@FreeBSD.org>2021-09-16 16:22:42 +0000
committerColin Percival <cperciva@FreeBSD.org>2021-09-16 19:23:19 +0000
commitb43d7aa09b3c91fb6b652306db2ac13e1459c497 (patch)
treedb4b48a64004e6634758edaaa03c10a13a776349
parent0aa2a94ea6359fb2587af81841fbf8eb30ab36b0 (diff)
downloadsrc-b43d7aa09b3c91fb6b652306db2ac13e1459c497.tar.gz
src-b43d7aa09b3c91fb6b652306db2ac13e1459c497.zip
EC2: Default to UEFI booting
This reduces the FreeBSD boot time by approximately 5 seconds, roughly equally divided betwenn two factors: * Disk I/O is faster in the EFI loader since it can perform larger I/Os. (The BIOS loader is limited due to the use of bounce buffers in sub-1M memory.) * The EFI console is much faster than the VGA console. Note however that not all EC2 instance types support UEFI; as a general rule the newer instances (based on Amazon's "Nitro" platform) support UEFI but the older instances (based on Xen) do not. X-MFC: TBD based on tradeoff between performance and compatibility Relnotes: yes Sponsored by: https://www.patreon.com/cperciva
-rw-r--r--release/Makefile.ec24
1 files changed, 0 insertions, 4 deletions
diff --git a/release/Makefile.ec2 b/release/Makefile.ec2
index ce21d93c37ad..b29f54715fb3 100644
--- a/release/Makefile.ec2
+++ b/release/Makefile.ec2
@@ -25,12 +25,8 @@ SSMOPTS= --ssm-name ${SSMPREFIX}/${TARGET_ARCH:S/aarch64/arm64/}/base/ufs/${REVI
EC2ARCH= --${TARGET_ARCH:S/aarch64/arm64/}
.endif
.if !defined(AMIBOOTMETHOD)
-.if ${TARGET_ARCH} == "amd64"
-AMIBOOTMETHOD= BIOS
-.else
AMIBOOTMETHOD= UEFI
.endif
-.endif
.if ${AMIBOOTMETHOD} == "UEFI" && ${TARGET_ARCH} == "amd64"
BOOTMODEOPT= --uefi
.endif