forked from BSB-WS23/mpstubs
102 lines
3.4 KiB
Makefile
102 lines
3.4 KiB
Makefile
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# Generates a bootable ISO image that can be transferred to external media, such as CDs or USB sticks.
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# This will install, in addition to your kernel, the bootloader GRUB (https://www.gnu.org/software/grub/).
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#
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# The target 'gemu-iso' is used to test the image generated with 'iso'.
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#
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# Assuming that a USB mass-storage devices is connected as, for instance /dev/sdc, the target 'usb-sdc'
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# can be used to make your device bootable (requires root access, substitute sdc with the matching device).
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# Alternatively, you can burn the .iso file directly to CD.
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DD = dd
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XORRISO = xorriso
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MKISO = grub-mkrescue
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ISODIR = $(BUILDDIR)-iso
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ISOGRUBCFG = boot/grub/grub.cfg
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ISOKERNEL = boot/kernel
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ISOINITRD = initrd
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GRUBTITLE = $(shell id -un)s $(PROJECT)
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GRUBTIMEOUT = 2
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GRUBBIN = /usr/lib/grub/i386-pc
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# Default ISO target
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iso: $(ISOFILE)
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# Create Grub config
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$(ISODIR)/$(ISOGRUBCFG):
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@echo "GEN $@"
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@mkdir -p $(dir $@)
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@/bin/echo -e "set timeout=$(GRUBTIMEOUT)\nset default=0\n\nmenuentry \"$(GRUBTITLE)\" {\n\tmultiboot /$(ISOKERNEL)\n\tmodule /$(ISOINITRD)\n\tboot\n}" > $@
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# Strip debug symbols from kernel binary
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$(ISODIR)/$(ISOKERNEL): all
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@echo "STRIP $@"
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@mkdir -p $(dir $@)
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$(VERBOSE) $(STRIP) --strip-debug --strip-unneeded -p -o $@ $(KERNEL)
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# copy inital ramdisk
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$(ISODIR)/$(ISOINITRD): all
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@echo "CPY $@"
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@mkdir -p $(dir $@)
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@if [ -s $(INITRD) ] ; then cp -a $(INITRD) $@ ; else touch $@ ; fi
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# Pack to ISO
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$(ISOFILE): $(ISODIR)/$(ISOKERNEL) $(ISODIR)/$(ISOINITRD) $(ISODIR)/$(ISOGRUBCFG)
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@echo "ISO $@"
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@which $(XORRISO) >/dev/null || echo "Xorriso cannot be found - if building the ISO fails, this may be the reason!" >&2
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$(VERBOSE) $(MKISO) -d $(GRUBBIN) -o $@ $(ISODIR)
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# Run ISO in Qemu
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qemu-iso: $(ISOFILE)
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$(QEMU) -cdrom $< -smp $(QEMUCPUS) $(QEMUFLAGS)
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# Run ISO in KVM
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kvm-iso: $(ISOFILE)
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$(QEMU) -cdrom $< -smp $(QEMUCPUS) $(KVMFLAGS)
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# Copy ISO to USB device
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usb: $(ISOFILE)
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ifeq (,$(USBDEV))
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@echo "The environment variable USBDEV must contain the path to the USB mass-storage device:" >&2
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@lsblk -o TYPE,KNAME,SIZE,MODEL -a -p | grep "^disk" | cut -b 6-
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@exit 1
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else
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$(VERBOSE) $(DD) if=$< of=$(USBDEV) bs=4M status=progress && sync
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endif
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# Shorthand to copy ISO to a specific USB device
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usb-%:
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@$(MAKE) USBDEV=/dev/$* usb
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# Burn ISO to CD
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cd: $(ISOFILE)
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ifeq (,$(CDRWDEV))
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@echo "The environment variable CDRWDEV must contain the path to the CD/DVD writer" >&2
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@exit 1
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else
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$(VERBOSE) $(XORRISO) -as cdrecord -v dev=$(CDRWDEV) -dao $<
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endif
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# Shorthand to nurn ISO to specific CD device
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cd-%:
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@$(MAKE) CDRWDEV=/dev/$* cd
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# The standard target 'clean' removes the whole generated system, the object files, and the dependency files.
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clean::
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@echo "RM $(ISODIR)"
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$(VERBOSE) rm -rf "$(ISODIR)" "$(ISODIR)$(OPTTAG)" "$(ISODIR)$(NOOPTTAG)" "$(ISODIR)$(DBGTAG)" "$(ISODIR)$(VERBOSETAG)"
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# Documentation
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help::
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@/bin/echo -e "" \
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" \e[3miso\e[0m Generates a bootable system image (File: $(ISOFILE))\n\n" \
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" \e[3mqemu-iso\e[0m Starts the system in QEMU by booting from the virtual CD drive\n\n" \
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" \e[3mkvm-iso\e[0m Same as \e[3mqemu-iso\e[0m, but with hardware acceleration\n\n" \
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" \e[3musb\e[0m Generates a bootable USB mass-storage device; the environment\n" \
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" variable \e[4mUSBDEV\e[0m should point to the USB device\n\n" \
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" \e[3mcd\e[0m Generates a bootable CD; the environment variable \e[4mCDRWDEV\e[0m\n" \
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" should point to the CD writer\n\n"
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# Phony targets
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.PHONY: iso qemu-iso kvm-iso cd usb help
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