On Thu, Mar 07, 2019 at 12:16:06PM +0100, Paul Menzel wrote: > Date: Wed Mar 6 08:14:28 2019 +0100 > > By default all file system modules are added to the GRUB coreboot > payload `default_payload.elf`. This makes the image quite big, > especially as often not all modules are needed. > > Introduce the variable `FS_PAYLOAD_MODULES`, which can be used to > explicitly set file systems modules to be added. > > $ make default_payload.elf > test -f default_payload.elf && rm default_payload.elf || true > pkgdatadir=. ./grub-mkstandalone --grub-mkimage=./grub-mkimage -O > i386-coreboot -o default_payload.elf --modules='ahci pata ehci uhci ohci > usb_keyboard usbms part_msdos ext2 fat at_keyboard part_gpt > usbserial_usbdebug cbfs' --install-modules='ls linux search configfile normal > cbtime cbls memrw iorw minicmd lsmmap lspci halt reboot hexdump pcidump > regexp setpci lsacpi chain test serial multiboot cbmemc linux16 gzio echo > help syslinuxcfg xnu affs afs bfs btrfs cbfs cpio cpio_be exfat ext2 f2fs fat > hfs hfsplus iso9660 jfs minix minix2 minix2_be minix3 minix3_be minix_be newc > nilfs2 ntfs odc procfs reiserfs romfs sfs squash4 tar udf ufs1 ufs1_be ufs2 > xfs zfs password_pbkdf2 ' --fonts= --themes= --locales= -d grub-core/ > /boot/grub/grub.cfg=./coreboot.cfg > $ ls -l default_payload.elf > -rw-rw---- 1 joey joey 1199568 Mar 6 13:58 default_payload.elf > > $ make default_payload.elf FS_PAYLOAD_MODULES="" # ext2 already in > `--modules` > test -f default_payload.elf && rm default_payload.elf || true > pkgdatadir=. ./grub-mkstandalone --grub-mkimage=./grub-mkimage -O > i386-coreboot -o default_payload.elf --modules='ahci pata ehci uhci ohci > usb_keyboard usbms part_msdos ext2 fat at_keyboard part_gpt > usbserial_usbdebug cbfs' --install-modules='ls linux search configfile normal > cbtime cbls memrw iorw minicmd lsmmap lspci halt reboot hexdump pcidump > regexp setpci lsacpi chain test serial multiboot cbmemc linux16 gzio echo > help syslinuxcfg xnu password_pbkdf2 ' --fonts= --themes= --locales= -d > grub-core/ /boot/grub/grub.cfg=./coreboot.cfg > $ ls -l default_payload.elf > -rw-rw---- 1 joey joey 832976 Mar 7 12:13 default_payload.elf > > So, the resulting payload size is around 370 kB smaller. (Adding it to > the CBFS, it will be compressed, so the effective size difference will > be smaller.) > > Signed-off-by: Paul Menzel <pmen...@molgen.mpg.de> > --- > Makefile.am | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/Makefile.am b/Makefile.am > index 94296a37e..1f4bb9b8c 100644 > --- a/Makefile.am > +++ b/Makefile.am > @@ -422,9 +422,10 @@ BOOTCHECK_TIMEOUT=180 > bootcheck: $(BOOTCHECKS) > > if COND_i386_coreboot > +FS_PAYLOAD_MODULES ?= $(shell cat grub-core/fs.lst) > default_payload.elf: grub-mkstandalone grub-mkimage FORCE > test -f $@ && rm $@ || true > - pkgdatadir=. ./grub-mkstandalone --grub-mkimage=./grub-mkimage -O > i386-coreboot -o $@ --modules='ahci pata ehci uhci ohci usb_keyboard usbms > part_msdos ext2 fat at_keyboard part_gpt usbserial_usbdebug cbfs' > --install-modules='ls linux search configfile normal cbtime cbls memrw iorw > minicmd lsmmap lspci halt reboot hexdump pcidump regexp setpci lsacpi chain > test serial multiboot cbmemc linux16 gzio echo help syslinuxcfg xnu $(shell > cat grub-core/fs.lst) password_pbkdf2 $(EXTRA_PAYLOAD_MODULES)' --fonts= > --themes= --locales= -d grub-core/ /boot/grub/grub.cfg=$(srcdir)/coreboot.cfg
If you do that why not go further and drop... > + pkgdatadir=. ./grub-mkstandalone --grub-mkimage=./grub-mkimage > -O i386-coreboot -o $@ --modules='ahci pata ehci uhci ohci > usb_keyboard usbms part_msdos ext2 fat at_keyboard part_gpt ... ext2, fat... > usbserial_usbdebug cbfs' --install-modules='ls linux search configfile ... and cbfs from here? Does anything depend on these filesystems? > normal cbtime cbls memrw iorw minicmd lsmmap lspci halt reboot hexdump > pcidump regexp setpci lsacpi chain test serial multiboot cbmemc > linux16 gzio echo help syslinuxcfg xnu $(FS_PAYLOAD_MODULES) > password_pbkdf2 $(EXTRA_PAYLOAD_MODULES)' --fonts= --themes= > --locales= -d grub-core/ /boot/grub/grub.cfg=$(srcdir)/coreboot.cfg Daniel _______________________________________________ Grub-devel mailing list Grub-devel@gnu.org https://lists.gnu.org/mailman/listinfo/grub-devel
