[6991] in linux-scsi channel archive
Re: Kernels > 1M - RFC: Makefile for Bootdisk creation
daemon@ATHENA.MIT.EDU (Ph. Marek)
Fri Aug 13 12:21:33 1999
Date: Thu, 12 Aug 1999 06:10:28 +0200
To: linux-scsi@vger.rutgers.edu
From: "Ph. Marek" <marek@bmlv.gv.at>
Hi,
I've attached a Makefile for bootdisk creation. Works very nice, except re_creating the filesystem image if files have changed - see the commented line.
Works as follows:
You've got a directory with Makefile.include and a subdirectory for each (type of) bootdisk you create.
In each subdir is
- another subdir fs/ with all the files on it
- a kernel (default name zImage)
- a Makefile (see example).
A subdir obj will be created for intermediary files.
The Makefile can specify type=INITRD, in which case a initrd-style-bootdisk will be created (with lilo on it).
Completely automated bootdisks - seems like your birthday, doesn't it?
>>Makefile.include start
ifneq "$(TYPE)" "initrd"
TYPE := normal
else
ifndef BOOTB
BOOTB := /boot/boot.b
endif
ifndef LILOCONF
LILOCONF:= /tmp/make.lilo.conf
MKLILO := 1
endif
ifndef DISKLC
DISKLC := /etc/lilo.conf
endif
endif
ifndef DESTDIR
DESTDIR := obj
endif
ifndef FS
FS := $(DESTDIR)/fs.image
endif
ifndef SIZE
SIZE := 4096
endif
ifndef SRC
SRC := fs
endif
ifndef KERNEL
KERNEL := zImage
endif
ifndef DISKIMAGE
DISKIMAGE := $(DESTDIR)/disk.image
endif
ifndef DEVICE
DEVICE := /dev/fd0
endif
ifndef FSZ
FSZ := $(FS).gz
endif
ifndef DIR
DIR := /tmp/bootdisk.tmpdir
endif
.PHONY: clean all initrd_fs
override KS := $(shell perl -e "print int((1023 + -s shift)/1024); " $(KERNEL))
clean:
@rm $(DISKIMAGE) $(FSZ) $(FS) 2>/dev/null || true
@echo ""
$(FS):
#$(shell find $(SRC) -type f -print) # funkt nicht ...
@echo "Creating new $(FS) ($(SIZE) kB) ..."
@dd if=/dev/zero of=$(FS) bs=1024 count=$(SIZE)
@mke2fs -q -i 8192 -m 0 -F $(FS)
@mkdir $(DIR) || true
@mount -o loop $(FS) $(DIR)
@cp -a $(SRC)/* $(DIR)/
@umount $(FS)
@rmdir $(DIR)
@echo ""
$(FSZ): $(FS)
@ls -la $(FSZ) 2>/dev/null || true
@echo zipping $(FS) to $(FSZ) ...
@gzip -9 -v < $(FS) > $(FSZ)
@ls -la $(FSZ)
@echo ""
override FSS = $(shell perl -e "print int((1023 + -s shift)/1024); " "$(FSZ)")
ifeq "$(TYPE)" "initrd"
initrd_fs:
@echo 'Making initrd-"root" fs ...'
@mkfs.minix -n14 -i 16 $(DEVICE) # -v
@echo ""
# initrd bootdisk
disk: $(FSZ) initrd_fs
@echo 'Making bootable ...'
@mkdir $(DIR) || true
@mount $(DEVICE) $(DIR)
@mkdir $(DIR)/dev $(DIR)/boot $(DIR)/bin $(DIR)/etc
@cp $(KERNEL) $(DIR)/bin/zImage
@cp $(FSZ) $(DIR)/bin/fs.gz
@cp $(BOOTB) $(DIR)/boot/boot.b
@cp -a $(DEVICE) $(DIR)/dev/boot
@mknod $(DIR)/dev/initrd b 1 250
@chmod 400 $(DIR)/dev/initrd
ifdef MKLILO
@echo "boot=/dev/boot" > $(LILOCONF)
@echo "read-only" >> $(LILOCONF)
@echo "prompt" >> $(LILOCONF)
@echo "timeout=100" >> $(LILOCONF)
@echo "#vga = 4" >> $(LILOCONF)
@echo "image = /bin/zImage" >> $(LILOCONF)
@echo "#map = /etc/lilo.map" >> $(LILOCONF)
@echo "initrd = /bin/fs.gz" >> $(LILOCONF)
@echo "label = linux" >> $(LILOCONF)
@mv $(LILOCONF) $(DIR)/$(DISKLC)
else
@cp $(LILOCONF) $(DIR)/$(DISKLC)
endif
@lilo -v -v -C $(DISKLC) -r $(DIR)
@df $(DEVICE)
@umount $(DEVICE)
@rmdir $(DIR)
@echo ""
else
# "Normal" bootdisk
$(DISKIMAGE): $(FSZ)
@printf "Kernel: %5d kB\n" $(KS)
@printf "FS : %5d kB\n" $(FSS)
@printf "------:---------\n"
@printf "Summe : %5d kB\n" $(shell echo $(FSS) + $(KS) | bc)
@dd if=$(KERNEL) of=$(DISKIMAGE) bs=1024 count=$(KS) 2> /dev/null
@dd if=$(FSZ) of=$(DISKIMAGE) bs=1024 count=$(FSS) seek=$(KS) 2> /dev/null
@rdev $(DISKIMAGE) $(DEVICE)
@rdev -R $(DISKIMAGE) 0
@rdev -r $(DISKIMAGE) $(shell perl -e 'print 0x4000 | shift' $(KS))
@echo Image $(DISKIMAGE) created
@echo ""
disk: $(DISKIMAGE)
@echo Writing image to $(DEVICE) ...
@dd if=$(DISKIMAGE) of=$(DEVICE) bs=1024
@echo ""
endif
>>Makefile.include ends
>>Makefile start
include ../Makefile.include
all:
@rm $(FS) || true
$(MAKE) $(DISKIMAGE)
>>Makefile ends
Ph.
-
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