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authorIan Moffett <ian@osmora.org>2025-11-15 14:22:52 -0500
committerIan Moffett <ian@osmora.org>2025-11-15 14:27:15 -0500
commit8c7e3ccd911c7e90cb577ce9d98226bfe2be7d7f (patch)
tree6104af32e2e44ae5b500b0929e582d21d105b70c /sys/arch/amd64/cpu/boot.S
parent7235966ea34c87724aee65792d2f183e653faabb (diff)
kern/amd64: io: Add serial UART driver
Signed-off-by: Ian Moffett <ian@osmora.org>
Diffstat (limited to 'sys/arch/amd64/cpu/boot.S')
-rw-r--r--sys/arch/amd64/cpu/boot.S10
1 files changed, 10 insertions, 0 deletions
diff --git a/sys/arch/amd64/cpu/boot.S b/sys/arch/amd64/cpu/boot.S
index 0d2e0d2..493a436 100644
--- a/sys/arch/amd64/cpu/boot.S
+++ b/sys/arch/amd64/cpu/boot.S
@@ -1,5 +1,15 @@
.globl _start
+ .extern uart_init
_start:
+ cli
+ cld
+
+ xor %rbp, %rbp
+ call uart_init
+
1: cli
hlt
jmp 1b
+
+/* vim: ft=gas :
+*/