diff options
Diffstat (limited to 'meta/recipes-core/sysvinit/sysvinit-inittab')
-rw-r--r-- | meta/recipes-core/sysvinit/sysvinit-inittab/start_getty | 38 |
1 files changed, 34 insertions, 4 deletions
diff --git a/meta/recipes-core/sysvinit/sysvinit-inittab/start_getty b/meta/recipes-core/sysvinit/sysvinit-inittab/start_getty index e3d052a840..31b4413433 100644 --- a/meta/recipes-core/sysvinit/sysvinit-inittab/start_getty +++ b/meta/recipes-core/sysvinit/sysvinit-inittab/start_getty | |||
@@ -1,5 +1,35 @@ | |||
1 | #!/bin/sh | 1 | #!/bin/sh |
2 | if [ -c /dev/$2 ] | 2 | #################################################################################### |
3 | then | 3 | # This script is use to automatic start serial console once power up. |
4 | /sbin/getty -L $1 $2 $3 | 4 | # Script enhancement has been done base on Bug YOCTO 10844. |
5 | fi | 5 | # Configuration can be done in meta/conf/machine/*.conf variable SERIAL_CONSOLES. |
6 | # Most of the information is retrieve from /proc virtual filesystem which | ||
7 | # contain all the runtime system information (eg. system memory, device mount, etc). | ||
8 | #################################################################################### | ||
9 | |||
10 | # Get active serial filename. | ||
11 | active_serial=$(grep "serial" /proc/tty/drivers | grep -oh "^\s*\S*") | ||
12 | |||
13 | # Re-phrase input parameter from ttyS target index (ttyS1, ttyS2, ttyAMA0, etc). | ||
14 | runtime_tty=$(echo $2 | grep -oh '[0-9]') | ||
15 | |||
16 | for line in $active_serial; do | ||
17 | # File is availability, file content current active serial target index. | ||
18 | if [ -e /proc/tty/driver/$line ] | ||
19 | then | ||
20 | # File content a lot of unknown serial. We use -v to remove all unmatch and get left off. | ||
21 | # Tail use to avoid 1st line included into the filter because 1st line is file description. | ||
22 | activetty=$(grep -v "unknown" /proc/tty/driver/$line | tail -n +2 | grep -oh "^\s*\S*[0-9]") | ||
23 | for active in $activetty; do | ||
24 | # Check if both index is match then proceed to enable the serial console. | ||
25 | if [ $active -eq $runtime_tty ] | ||
26 | then | ||
27 | if [ -c /dev/$2 ] | ||
28 | then | ||
29 | /sbin/getty -L $1 $2 $3 | ||
30 | fi | ||
31 | break | ||
32 | fi | ||
33 | done | ||
34 | fi | ||
35 | done | ||