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core: 用于引导参数时不需要判断 tty 是否存在和可写

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bin456789
2026-04-28 07:33:09 +08:00
parent 0db534c4fd
commit 047b82aaa0
1 changed files with 12 additions and 4 deletions
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16
ttys.sh
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@ -7,16 +7,24 @@ prefix=$1
# 注意 debian initrd 没有 xargs # 注意 debian initrd 没有 xargs
# 最后一个 tty 是主 tty，显示的信息最全 # 最后一个 tty 是主 tty，显示的信息最全
is_first=true
if [ "$(uname -m)" = "aarch64" ]; then if [ "$(uname -m)" = "aarch64" ]; then
ttys="ttyS0 ttyAMA0 tty0" ttys="ttyS0 ttyAMA0 tty0"
else else
ttys="ttyS0 tty0" ttys="ttyS0 tty0"
fi fi
# 安装环境下 tty 不一定齐全
# hytron 有ttyS0 但无法写入
# 用于 cmdline 引导参数时不需要判断 tty 是否存在和可写
if [ "$prefix" = "console=" ]; then
is_for_cmdline=true
else
is_for_cmdline=false
fi
is_first=true
for tty in $ttys; do for tty in $ttys; do
# hytron 有ttyS0 但无法写入 if $is_for_cmdline || stty -g -F "/dev/$tty" >/dev/null 2>&1; then
if stty -g -F "/dev/$tty" >/dev/null 2>&1; then
if $is_first; then if $is_first; then
is_first=false is_first=false
else else
@ -25,7 +33,7 @@ for tty in $ttys; do
printf "%s" "$prefix$tty" printf "%s" "$prefix$tty"
if [ "$prefix" = "console=" ] && if $is_for_cmdline &&
{ [ "$tty" = ttyS0 ] || [ "$tty" = ttyAMA0 ]; }; then { [ "$tty" = ttyS0 ] || [ "$tty" = ttyAMA0 ]; }; then
printf ",115200n8" printf ",115200n8"
fi fi