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author | Patrick Williams <patrick@stwcx.xyz> | 2015-09-15 22:41:29 +0300 |
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committer | Patrick Williams <patrick@stwcx.xyz> | 2015-09-15 22:41:29 +0300 |
commit | 21f9b84b4b729fbd7acbd465e7a3f726e4d20f91 (patch) | |
tree | eb2d091d427ca0813b445509d59cc8e27e8ad25f /yocto-poky/meta/recipes-core/initrdscripts/initramfs-framework/debug | |
parent | 101cef31e2bf54c678501155cd2106251acbd076 (diff) | |
parent | c124f4f2e04dca16a428a76c89677328bc7bf908 (diff) | |
download | openbmc-21f9b84b4b729fbd7acbd465e7a3f726e4d20f91.tar.xz |
Merge commit 'c124f4f2e04dca16a428a76c89677328bc7bf908' as 'yocto-poky'
Diffstat (limited to 'yocto-poky/meta/recipes-core/initrdscripts/initramfs-framework/debug')
-rw-r--r-- | yocto-poky/meta/recipes-core/initrdscripts/initramfs-framework/debug | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/yocto-poky/meta/recipes-core/initrdscripts/initramfs-framework/debug b/yocto-poky/meta/recipes-core/initrdscripts/initramfs-framework/debug new file mode 100644 index 000000000..00bfd7d3f --- /dev/null +++ b/yocto-poky/meta/recipes-core/initrdscripts/initramfs-framework/debug @@ -0,0 +1,82 @@ +#!/bin/sh +# Copyright (C) 2011 O.S. Systems Software LTDA. +# Licensed on MIT + +# Adds support to dynamic debugging of initramfs using bootparam in +# following format: +# shell : starts a shell before and after each module +# shell=before:<module> : starts a shell before <module> is loaded and run +# shell=after:<module> : starts a shell after <module> is loaded and run +# +# shell-debug : run set -x as soon as possible +# shell-debug=before:<module> : run set -x before <module> is loaded and run +# shell-debug=after:<module> : run set -x after <module> is loaded and run + +DEBUG_SHELL="false" + +debug_hook_handler() { + status=$1 + module=$2 + + if [ -n "$bootparam_shell" ] && [ "$bootparam_shell" != "true" ]; then + shell_wanted_status=`expr $bootparam_shell : '\(.*\):.*'` + shell_wanted_module=`expr $bootparam_shell : '.*:\(.*\)'` + + if [ "$shell_wanted_status" = "before" ]; then + shell_wanted_status=pre + else + shell_wanted_status=post + fi + fi + + if [ "$bootparam_shell" = "true" ] || + ( [ "$status" = "$shell_wanted_status" ] && + [ "$module" = "$shell_wanted_module" ] ); then + if [ "$status" = "pre" ]; then + status_msg="before" + else + status_msg="after" + fi + + msg "Starting shell $status_msg $module..." + sh + fi + + if [ -n "$bootparam_shell_debug" ] && [ "$bootparam_shell_debug" != "true" ]; then + shell_debug_wanted_status=`expr $bootparam_shell_debug : '\(.*\):.*'` + shell_debug_wanted_module=`expr $bootparam_shell_debug : '.*:\(.*\)'` + + if [ "$shell_debug_wanted_status" = "before" ]; then + shell_debug_wanted_status=pre + else + shell_debug_wanted_status=post + fi + fi + + if [ "$bootparam_shell_debug" = "true" ] || + ( [ "$status" = "$shell_debug_wanted_status" ] && + [ "$module" = "$shell_debug_wanted_module" ] ); then + if [ "$DEBUG_SHELL" = "true" ]; then + return 0 + fi + + if [ "$status" = "pre" ]; then + status_msg="before" + else + status_msg="after" + fi + + msg "Starting shell debugging $status_msg $module..." + DEBUG_SHELL="true" + set -x + fi +} + +debug_enabled() { + return 0 +} + +debug_run() { + add_module_pre_hook "debug_hook_handler" + add_module_post_hook "debug_hook_handler" +} |