of modules. The author of an external modules should supply
a makefile that hides most of the complexity so one only has to type
'make' to build the module. A complete example will be present in
-chapter ยค. Creating a kbuild file for an external module".
+chapter 4, "Creating a kbuild file for an external module".
=== 2. How to build external modules
"/^->/{s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; s:->::; p;}"
endef
# Override default regexp for specific architectures
-sed-$(CONFIG_MIPS) := "/^@@@/s///p"
+sed-$(CONFIG_MIPS) := "/^@@@/{s/^@@@//; s/ \#.*\$$//; p;}"
quiet_cmd_offsets = GEN $@
define cmd_offsets
install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra)
PHONY += _emodinst_
_emodinst_:
- $(Q)rm -rf $(MODLIB)/$(install-dir)
$(Q)mkdir -p $(MODLIB)/$(install-dir)
$(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modinst
# Single targets
# ---------------------------------------------------------------------------
-# The directory part is taken from first prerequisite, so this
-# works even with external modules
+# Single targets are compatible with:
+# - build whith mixed source and output
+# - build with separate output dir 'make O=...'
+# - external modules
+#
+# target-dir => where to store outputfile
+# build-dir => directory in kernel source tree to use
+
+ifeq ($(KBUILD_EXTMOD),)
+ build-dir = $(patsubst %/,%,$(dir $@))
+ target-dir = $(dir $@)
+else
+ zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@)))
+ build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash))
+ target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@))
+endif
+
%.s: %.c prepare scripts FORCE
- $(Q)$(MAKE) $(build)=$(dir $<) $(dir $<)$(notdir $@)
+ $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
%.i: %.c prepare scripts FORCE
- $(Q)$(MAKE) $(build)=$(dir $<) $(dir $<)$(notdir $@)
+ $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
%.o: %.c prepare scripts FORCE
- $(Q)$(MAKE) $(build)=$(dir $<) $(dir $<)$(notdir $@)
+ $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
%.lst: %.c prepare scripts FORCE
- $(Q)$(MAKE) $(build)=$(dir $<) $(dir $<)$(notdir $@)
+ $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
%.s: %.S prepare scripts FORCE
- $(Q)$(MAKE) $(build)=$(dir $<) $(dir $<)$(notdir $@)
+ $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
%.o: %.S prepare scripts FORCE
- $(Q)$(MAKE) $(build)=$(dir $<) $(dir $<)$(notdir $@)
-
-# For external modules we shall include any directory of the target,
-# but usual case there is no directory part.
-# make M=`pwd` module.o => $(dir $@)=./
-# make M=`pwd` foo/module.o => $(dir $@)=foo/
-# make M=`pwd` / => $(dir $@)=/
-
-ifeq ($(KBUILD_EXTMOD),)
- target-dir = $(@D)
-else
- zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@)))
- target-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash))
-endif
+ $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
-/ %/: scripts prepare FORCE
+# Modules
+/ %/: prepare scripts FORCE
$(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
- $(build)=$(target-dir)
-%.ko: scripts FORCE
+ $(build)=$(build-dir)
+%.ko: prepare scripts FORCE
$(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
- $(build)=$(target-dir) $(@:.ko=.o)
+ $(build)=$(build-dir) $(@:.ko=.o)
$(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost
# FIXME Should go into a make.lib or something
#
CFLAGS_kbd.o := -Idrivers/char
-CFLAGS_vreset.o := -I$(srctree)/arch/ppc/boot/include
+CFLAGS_vreset.o := -Iarch/ppc/boot/include
zlib := infblock.c infcodes.c inffast.c inflate.c inftrees.c infutil.c
obj-y := math.o
EXTRA_AFLAGS := -ansi
-EXTRA_CFLAGS = -I. -I$(TOPDIR)/include/math-emu -w
+EXTRA_CFLAGS = -I. -Iinclude/math-emu -w
obj-$(CONFIG_USB_KONICAWC) += usbvideo/
obj-$(CONFIG_USB_VICAM) += usbvideo/
-EXTRA_CFLAGS += -I$(srctree)/drivers/media/dvb/dvb-core
+EXTRA_CFLAGS += -Idrivers/media/dvb/dvb-core
obj-$(CONFIG_VIDEO_BT848) += bttv.o
EXTRA_CFLAGS += -I$(src)/..
-EXTRA_CFLAGS += -I$(srctree)/drivers/media/dvb/dvb-core
+EXTRA_CFLAGS += -Idrivers/media/dvb/dvb-core
obj-$(CONFIG_VIDEO_CX25840) += cx25840.o
-EXTRA_CFLAGS += -I$(src)/..
+EXTRA_CFLAGS += -Idrivers/media/video
obj-$(CONFIG_VIDEO_CX88_ALSA) += cx88-alsa.o
obj-$(CONFIG_VIDEO_CX88_VP3054) += cx88-vp3054-i2c.o
-EXTRA_CFLAGS += -I$(src)/..
-EXTRA_CFLAGS += -I$(srctree)/drivers/media/dvb/dvb-core
-EXTRA_CFLAGS += -I$(srctree)/drivers/media/dvb/frontends
+EXTRA_CFLAGS += -Idrivers/media/video
+EXTRA_CFLAGS += -Idrivers/media/dvb/dvb-core
+EXTRA_CFLAGS += -Idrivers/media/dvb/frontends
extra-cflags-$(CONFIG_VIDEO_BUF_DVB) += -DHAVE_VIDEO_BUF_DVB=1
extra-cflags-$(CONFIG_DVB_CX22702) += -DHAVE_CX22702=1
obj-$(CONFIG_VIDEO_EM28XX) += em28xx.o
-EXTRA_CFLAGS += -I$(src)/..
+EXTRA_CFLAGS += -Idrivers/media/video
obj-$(CONFIG_VIDEO_SAA7134_DVB) += saa7134-dvb.o
-EXTRA_CFLAGS += -I$(src)/..
-EXTRA_CFLAGS += -I$(srctree)/drivers/media/dvb/dvb-core
-EXTRA_CFLAGS += -I$(srctree)/drivers/media/dvb/frontends
+EXTRA_CFLAGS += -Idrivers/media/video
+EXTRA_CFLAGS += -Idrivers/media/dvb/dvb-core
+EXTRA_CFLAGS += -Idrivers/media/dvb/frontends
extra-cflags-$(CONFIG_VIDEO_BUF_DVB) += -DHAVE_VIDEO_BUF_DVB=1
extra-cflags-$(CONFIG_DVB_MT352) += -DHAVE_MT352=1
obj-$(CONFIG_CHELSIO_T1) += cxgb.o
-EXTRA_CFLAGS += -I$(TOPDIR)/drivers/net/chelsio $(DEBUG_FLAGS)
+EXTRA_CFLAGS += -Idrivers/net/chelsio $(DEBUG_FLAGS)
cxgb-objs := cxgb2.o espi.o pm3393.o sge.o subr.o mv88x201x.o
# $(Q)$(MAKE) $(build)=dir
build := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.build obj
+# Prefix -I with $(srctree) if it is not an absolute path
+addtree = $(if $(filter-out -I/%,$(1)),$(patsubst -I%,-I$(srctree)/%,$(1))) $(1)
+# Find all -I options and call addtree
+flags = $(foreach o,$($(1)),$(if $(filter -I%,$(o)),$(call addtree,$(o)),$(o)))
+
# If quiet is set, only print short version of command
cmd = @$(echo-cmd) $(cmd_$(1))
__cpp_flags = $(_cpp_flags)
else
-# Prefix -I with $(srctree) if it is not an absolute path
-addtree = $(if $(filter-out -I/%,$(1)),$(patsubst -I%,-I$(srctree)/%,$(1))) $(1)
-# Find all -I options and call addtree
-flags = $(foreach o,$($(1)),$(if $(filter -I%,$(o)),$(call addtree,$(o)),$(o)))
-
# -I$(obj) locates generated .h files
# $(call addtree,-I$(obj)) locates .h files in srctree, from generated .c files
# and locates generated .h files
#!/bin/bash
# Copyright (C) Martin Schlemmer <azarah@nosferatu.za.org>
-# Released under the terms of the GNU GPL
-#
-# Generate a newline separated list of entries from the file/directory
-# supplied as an argument.
-#
-# If a file/directory is not supplied then generate a small dummy file.
+# Copyright (c) 2006 Sam Ravnborg <sam@ravnborg.org>
#
-# The output is suitable for gen_init_cpio built from usr/gen_init_cpio.c.
+# Released under the terms of the GNU GPL
#
+# Generate a cpio packed initramfs. It uses gen_init_cpio to generate
+# the cpio archive, and gzip to pack it.
+# The script may also be used to generate the inputfile used for gen_init_cpio
+# This script assumes that gen_init_cpio is located in usr/ directory
+
+# error out on errors
+set -e
+
+usage() {
+cat << EOF
+Usage:
+$0 [-o <file>] [-u <uid>] [-g <gid>] {-d | <cpio_source>} ...
+ -o <file> Create gzipped initramfs file named <file> using
+ gen_init_cpio and gzip
+ -u <uid> User ID to map to user ID 0 (root).
+ <uid> is only meaningful if <cpio_source>
+ is a directory.
+ -g <gid> Group ID to map to group ID 0 (root).
+ <gid> is only meaningful if <cpio_source>
+ is a directory.
+ <cpio_source> File list or directory for cpio archive.
+ If <cpio_source> is a .cpio file it will be used
+ as direct input to initramfs.
+ -d Output the default cpio list.
+
+All options except -o and -l may be repeated and are interpreted
+sequentially and immediately. -u and -g states are preserved across
+<cpio_source> options so an explicit "-u 0 -g 0" is required
+to reset the root/group mapping.
+EOF
+}
+
+list_default_initramfs() {
+ # echo usr/kinit/kinit
+ :
+}
default_initramfs() {
- cat <<-EOF
+ cat <<-EOF >> ${output}
# This is a very simple, default initramfs
dir /dev 0755 0 0
nod /dev/console 0600 0 0 c 5 1
dir /root 0700 0 0
+ # file /kinit usr/kinit/kinit 0755 0 0
+ # slink /init kinit 0755 0 0
EOF
}
return 0
}
+list_print_mtime() {
+ :
+}
+
print_mtime() {
- local argv1="$1"
local my_mtime="0"
- if [ -e "${argv1}" ]; then
- my_mtime=$(find "${argv1}" -printf "%T@\n" | sort -r | head -n 1)
+ if [ -e "$1" ]; then
+ my_mtime=$(find "$1" -printf "%T@\n" | sort -r | head -n 1)
fi
-
- echo "# Last modified: ${my_mtime}"
- echo
+
+ echo "# Last modified: ${my_mtime}" >> ${output}
+ echo "" >> ${output}
+}
+
+list_parse() {
+ echo "$1 \\"
}
+# for each file print a line in following format
+# <filetype> <name> <path to file> <octal mode> <uid> <gid>
+# for links, devices etc the format differs. See gen_init_cpio for details
parse() {
local location="$1"
local name="${location/${srcdir}//}"
;;
esac
- echo "${str}"
+ echo "${str}" >> ${output}
return 0
}
-usage() {
- printf "Usage:\n"
- printf "$0 [ [-u <root_uid>] [-g <root_gid>] [-d | <cpio_source>] ] . . .\n"
- printf "\n"
- printf -- "-u <root_uid> User ID to map to user ID 0 (root).\n"
- printf " <root_uid> is only meaningful if <cpio_source>\n"
- printf " is a directory.\n"
- printf -- "-g <root_gid> Group ID to map to group ID 0 (root).\n"
- printf " <root_gid> is only meaningful if <cpio_source>\n"
- printf " is a directory.\n"
- printf "<cpio_source> File list or directory for cpio archive.\n"
- printf " If <cpio_source> is not provided then a\n"
- printf " a default list will be output.\n"
- printf -- "-d Output the default cpio list. If no <cpio_source>\n"
- printf " is given then the default cpio list will be output.\n"
- printf "\n"
- printf "All options may be repeated and are interpreted sequentially\n"
- printf "and immediately. -u and -g states are preserved across\n"
- printf "<cpio_source> options so an explicit \"-u 0 -g 0\" is required\n"
- printf "to reset the root/group mapping.\n"
+unknown_option() {
+ printf "ERROR: unknown option \"$arg\"\n" >&2
+ printf "If the filename validly begins with '-', " >&2
+ printf "then it must be prefixed\n" >&2
+ printf "by './' so that it won't be interpreted as an option." >&2
+ printf "\n" >&2
+ usage >&2
+ exit 1
+}
+
+list_header() {
+ echo "deps_initramfs := \\"
+}
+
+header() {
+ printf "\n#####################\n# $1\n" >> ${output}
+}
+
+# process one directory (incl sub-directories)
+dir_filelist() {
+ ${dep_list}header "$1"
+
+ srcdir=$(echo "$1" | sed -e 's://*:/:g')
+ dirlist=$(find "${srcdir}" -printf "%p %m %U %G\n" 2>/dev/null)
+
+ # If $dirlist is only one line, then the directory is empty
+ if [ "$(echo "${dirlist}" | wc -l)" -gt 1 ]; then
+ ${dep_list}print_mtime "$1"
+
+ echo "${dirlist}" | \
+ while read x; do
+ ${dep_list}parse ${x}
+ done
+ fi
}
-build_list() {
- printf "\n#####################\n# $cpio_source\n"
-
- if [ -f "$cpio_source" ]; then
- print_mtime "$cpio_source"
- cat "$cpio_source"
- elif [ -d "$cpio_source" ]; then
- srcdir=$(echo "$cpio_source" | sed -e 's://*:/:g')
- dirlist=$(find "${srcdir}" -printf "%p %m %U %G\n" 2>/dev/null)
-
- # If $dirlist is only one line, then the directory is empty
- if [ "$(echo "${dirlist}" | wc -l)" -gt 1 ]; then
- print_mtime "$cpio_source"
-
- echo "${dirlist}" | \
- while read x; do
- parse ${x}
- done
+# if only one file is specified and it is .cpio file then use it direct as fs
+# if a directory is specified then add all files in given direcotry to fs
+# if a regular file is specified assume it is in gen_initramfs format
+input_file() {
+ source="$1"
+ if [ -f "$1" ]; then
+ ${dep_list}header "$1"
+ is_cpio="$(echo "$1" | sed 's/^.*\.cpio/cpio/')"
+ if [ $2 -eq 0 -a ${is_cpio} == "cpio" ]; then
+ cpio_file=$1
+ [ ! -z ${dep_list} ] && echo "$1"
+ return 0
+ fi
+ if [ -z ${dep_list} ]; then
+ print_mtime "$1" >> ${output}
+ cat "$1" >> ${output}
else
- # Failsafe in case directory is empty
- default_initramfs
+ grep ^file "$1" | cut -d ' ' -f 3
fi
+ elif [ -d "$1" ]; then
+ dir_filelist "$1"
else
- echo " $0: Cannot open '$cpio_source'" >&2
+ echo " ${prog}: Cannot open '$1'" >&2
exit 1
fi
}
-
+prog=$0
root_uid=0
root_gid=0
+dep_list=
+cpio_file=
+cpio_list=
+output="/dev/stdout"
+output_file=""
+arg="$1"
+case "$arg" in
+ "-l") # files included in initramfs - used by kbuild
+ dep_list="list_"
+ shift
+ ;;
+ "-o") # generate gzipped cpio image named $1
+ shift
+ output_file="$1"
+ cpio_list="$(mktemp ${TMPDIR:-/tmp}/cpiolist.XXXXXX)"
+ output=${cpio_list}
+ shift
+ ;;
+esac
while [ $# -gt 0 ]; do
arg="$1"
shift
case "$arg" in
- "-u")
+ "-u") # map $1 to uid=0 (root)
root_uid="$1"
shift
;;
- "-g")
+ "-g") # map $1 to gid=0 (root)
root_gid="$1"
shift
;;
- "-d")
+ "-d") # display default initramfs list
default_list="$arg"
- default_initramfs
+ ${dep_list}default_initramfs
;;
"-h")
usage
*)
case "$arg" in
"-"*)
- printf "ERROR: unknown option \"$arg\"\n" >&2
- printf "If the filename validly begins with '-', then it must be prefixed\n" >&2
- printf "by './' so that it won't be interpreted as an option." >&2
- printf "\n" >&2
- usage >&2
- exit 1
+ unknown_option
;;
- *)
- cpio_source="$arg"
- build_list
+ *) # input file/dir - process it
+ input_file "$arg" "$#"
;;
esac
;;
esac
done
-# spit out the default cpio list if a source hasn't been specified
-[ -z "$cpio_source" -a -z "$default_list" ] && default_initramfs
-
+# If output_file is set we will generate cpio archive and gzip it
+# we are carefull to delete tmp files
+if [ ! -z ${output_file} ]; then
+ if [ -z ${cpio_file} ]; then
+ cpio_tfile="$(mktemp ${TMPDIR:-/tmp}/cpiofile.XXXXXX)"
+ usr/gen_init_cpio ${cpio_list} > ${cpio_tfile}
+ else
+ cpio_tfile=${cpio_file}
+ fi
+ rm ${cpio_list}
+ cat ${cpio_tfile} | gzip -f -9 - > ${output_file}
+ [ -z ${cpio_file} ] && rm ${cpio_tfile}
+fi
exit 0
}
}
-static char *fgets_check_stream(char *s, int size, FILE *stream)
-{
- char *ret = fgets(s, size, stream);
-
- if (ret == NULL && feof(stream)) {
- printf(_("aborted!\n\n"));
- printf(_("Console input is closed. "));
- printf(_("Run 'make oldconfig' to update configuration.\n\n"));
- exit(1);
- }
-
- return ret;
-}
-
static void conf_askvalue(struct symbol *sym, const char *def)
{
enum symbol_type type = sym_get_type(sym);
check_stdin();
case ask_all:
fflush(stdout);
- fgets_check_stream(line, 128, stdin);
+ fgets(line, 128, stdin);
return;
case set_default:
printf("%s\n", def);
printf("%*s%s\n", indent - 1, "", menu_get_prompt(menu));
def_sym = sym_get_choice_value(sym);
cnt = def = 0;
- line[0] = '0';
- line[1] = 0;
+ line[0] = 0;
for (child = menu->list; child; child = child->next) {
if (!menu_is_visible(child))
continue;
check_stdin();
case ask_all:
fflush(stdout);
- fgets_check_stream(line, 128, stdin);
+ fgets(line, 128, stdin);
strip(line);
if (line[0] == '?') {
printf("\n%s\n", menu->sym->help ?
sym->flags |= e->right.sym->flags & SYMBOL_NEW;
}
- sym_change_count = conf_warnings && conf_unsaved;
+ sym_change_count = conf_warnings || conf_unsaved;
return 0;
}
#include "dialog.h"
-#define ITEM_IDENT 1 /* Indent of menu entries. Fixed for all menus */
-static int menu_width;
+static int menu_width, item_x;
/*
* Print menu item
int j;
char *menu_item = malloc(menu_width + 1);
- strncpy(menu_item, item, menu_width - ITEM_IDENT);
+ strncpy(menu_item, item, menu_width - item_x);
menu_item[menu_width] = 0;
j = first_alpha(menu_item, "YyNnMmHh");
wclrtoeol(win);
#endif
wattrset(win, selected ? item_selected_attr : item_attr);
- mvwaddstr(win, choice, ITEM_IDENT, menu_item);
+ mvwaddstr(win, choice, item_x, menu_item);
if (hotkey) {
wattrset(win, selected ? tag_key_selected_attr : tag_key_attr);
- mvwaddch(win, choice, ITEM_IDENT + j, menu_item[j]);
+ mvwaddch(win, choice, item_x + j, menu_item[j]);
}
if (selected) {
- wmove(win, choice, ITEM_IDENT + 1);
+ wmove(win, choice, item_x + 1);
}
free(menu_item);
wrefresh(win);
draw_box(dialog, box_y, box_x, menu_height + 2, menu_width + 2,
menubox_border_attr, menubox_attr);
+ item_x = (menu_width - 70) / 2;
+
/* Set choice to default item */
for (i = 0; i < item_no; i++)
if (strcmp(current, items[i * 2]) == 0)
wnoutrefresh(menu);
print_arrows(dialog, item_no, scroll,
- box_y, box_x + ITEM_IDENT + 1, menu_height);
+ box_y, box_x + item_x + 1, menu_height);
print_buttons(dialog, height, width, 0);
- wmove(menu, choice, ITEM_IDENT + 1);
+ wmove(menu, choice, item_x + 1);
wrefresh(menu);
while (key != ESC) {
print_item(scroll + choice, choice, TRUE);
print_arrows(dialog, item_no, scroll,
- box_y, box_x + ITEM_IDENT + 1, menu_height);
+ box_y, box_x + item_x + 1, menu_height);
wnoutrefresh(dialog);
wrefresh(menu);
warn("%s - Section mismatch: reference to %s:%s from %s "
"before '%s' (at offset -0x%llx)\n",
modname, secname, refsymname, fromsec,
- elf->strtab + before->st_name,
+ elf->strtab + after->st_name,
(long long)r.r_offset);
} else {
warn("%s - Section mismatch: reference to %s:%s from %s "
fsck.jfs -V 2>&1 | grep version | sed 's/,//' | awk \
'NR==1 {print "jfsutils ", $3}'
-reiserfsck -V 2>&1 | grep reiserfsck | awk \
+reiserfsck -V 2>&1 | grep ^reiserfsck | awk \
'NR==1{print "reiserfsprogs ", $2}'
-fsck.reiser4 -V 2>&1 | grep fsck.reiser4 | awk \
+fsck.reiser4 -V 2>&1 | grep ^fsck.reiser4 | awk \
'NR==1{print "reiser4progs ", $2}'
xfs_db -V 2>&1 | grep version | awk \
+#
+# kbuild file for usr/ - including initramfs image
+#
-obj-y := initramfs_data.o
-
-hostprogs-y := gen_init_cpio
+klibcdirs:;
-clean-files := initramfs_data.cpio.gz initramfs_list
+# Generate builtin.o based on initramfs_data.o
+obj-y := initramfs_data.o
# initramfs_data.o contains the initramfs_data.cpio.gz image.
# The image is included using .incbin, a dependency which is not
# tracked automatically.
$(obj)/initramfs_data.o: $(obj)/initramfs_data.cpio.gz FORCE
-ifdef CONFIG_INITRAMFS_ROOT_UID
-gen_initramfs_args += -u $(CONFIG_INITRAMFS_ROOT_UID)
-endif
-
-ifdef CONFIG_INITRAMFS_ROOT_GID
-gen_initramfs_args += -g $(CONFIG_INITRAMFS_ROOT_GID)
-endif
-
-# The $(shell echo $(CONFIG_INITRAMFS_SOURCE)) is to remove the
-# gratuitous begin and end quotes from the Kconfig string type.
-# Internal, escaped quotes in the Kconfig string will loose the
-# escape and become active quotes.
-quotefixed_initramfs_source := $(shell echo $(CONFIG_INITRAMFS_SOURCE))
-
-filechk_initramfs_list = $(CONFIG_SHELL) \
- $(srctree)/scripts/gen_initramfs_list.sh $(gen_initramfs_args) $(quotefixed_initramfs_source)
-
-$(obj)/initramfs_list: $(obj)/Makefile FORCE
- $(call filechk,initramfs_list)
-
-quiet_cmd_cpio = CPIO $@
- cmd_cpio = ./$< $(obj)/initramfs_list > $@
-
-
-# Check if the INITRAMFS_SOURCE is a cpio archive
-ifneq (,$(findstring .cpio,$(quotefixed_initramfs_source)))
-
-# INITRAMFS_SOURCE has a cpio archive - verify that it's a single file
-ifneq (1,$(words $(quotefixed_initramfs_source)))
-$(error Only a single file may be specified in CONFIG_INITRAMFS_SOURCE (="$(quotefixed_initramfs_source)") when a cpio archive is directly specified.)
-endif
-# Now use the cpio archive directly
-initramfs_data_cpio = $(quotefixed_initramfs_source)
-targets += $(quotefixed_initramfs_source)
-
-else
-
-# INITRAMFS_SOURCE is not a cpio archive - create one
-$(obj)/initramfs_data.cpio: $(obj)/gen_init_cpio \
- $(initramfs-y) $(obj)/initramfs_list FORCE
- $(call if_changed,cpio)
-
-targets += initramfs_data.cpio
-initramfs_data_cpio = $(obj)/initramfs_data.cpio
-
+#####
+# Generate the initramfs cpio archive
+
+hostprogs-y := gen_init_cpio
+initramfs := $(CONFIG_SHELL) $(srctree)/scripts/gen_initramfs_list.sh
+ramfs-input := $(if $(filter-out "",$(CONFIG_INITRAMFS_SOURCE)), \
+ $(CONFIG_INITRAMFS_SOURCE),-d)
+ramfs-args := \
+ $(if $(CONFIG_INITRAMFS_ROOT_UID), -u $(CONFIG_INITRAMFS_ROOT_UID)) \
+ $(if $(CONFIG_INITRAMFS_ROOT_GID), -g $(CONFIG_INITRAMFS_ROOT_GID)) \
+ $(ramfs-input)
+
+# .initramfs_data.cpio.gz.d is used to identify all files included
+# in initramfs and to detect if any files are added/removed.
+# Removed files are identified by directory timestamp being updated
+# The dependency list is generated by gen_initramfs.sh -l
+ifneq ($(wildcard $(obj)/.initramfs_data.cpio.gz.d),)
+ include $(obj)/.initramfs_data.cpio.gz.d
endif
-
-$(obj)/initramfs_data.cpio.gz: $(initramfs_data_cpio) FORCE
- $(call if_changed,gzip)
-
-targets += initramfs_data.cpio.gz
+quiet_cmd_initfs = GEN $@
+ cmd_initfs = $(initramfs) -o $@ $(ramfs-args) $(ramfs-input)
+
+targets := initramfs_data.cpio.gz
+$(deps_initramfs): klibcdirs
+# We rebuild initramfs_data.cpio.gz if:
+# 1) Any included file is newer then initramfs_data.cpio.gz
+# 2) There are changes in which files are included (added or deleted)
+# 3) If gen_init_cpio are newer than initramfs_data.cpio.gz
+# 4) arguments to gen_initramfs.sh changes
+$(obj)/initramfs_data.cpio.gz: $(obj)/gen_init_cpio $(deps_initramfs) klibcdirs
+ $(Q)$(initramfs) -l $(ramfs-input) > $(obj)/.initramfs_data.cpio.gz.d
+ $(call if_changed,initfs)
projects / powerpc.git / commitdiff