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fs/iso9660: prepare cleaner kernel/initrd path handling

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The iso9660.mk modifies the menu.lst file from Grub to set the correct
initrd/kernel image locations. However, with the upcoming support of
other bootloaders for iso9660 filesystems, we need to modify a bit
this logic.

Instead of relying on the specific details of the grub menu.lst
syntax, we introduce the __KERNEL_PATH__ and __INITRD_PATH__ magic
keywords, which iso9660.mk will replace by the appropriate
values. They can therefore be used where needed in grub menu.lst, and
in similar configuration files of other bootloaders, as will be
supported in the following commits.

Also, in order to be consistent with the soon to be introduced support
for having the root filesystem itself as iso9660, this commit changes
the installation location of the initrd and kernel. Instead of being
/initrd and /kernel, they become /boot/initrd and
/boot/$(LINUX_IMAGE_NAME).

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: Samuel Martin <s.martin49@gmail.com>
Acked-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
This commit is contained in:
Thomas Petazzoni 2015-06-09 00:21:40 +02:00
parent 3736b9a7c1
commit 168cce0496
3 changed files with 15 additions and 5 deletions
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5
fs/iso9660/Config.in
View File

@ -13,6 +13,11 @@ if BR2_TARGET_ROOTFS_ISO9660
config BR2_TARGET_ROOTFS_ISO9660_BOOT_MENU
string "Boot menu.lst file"
default "fs/iso9660/menu.lst"
help
Use this option to provide a custom Grub menu.lst file. Note
that the strings __KERNEL_PATH__ and __INITRD_PATH__ will
automatically be replaced by the path to the kernel and
initrd images respectively.
endif

11
fs/iso9660/iso9660.mk
View File

@ -22,12 +22,14 @@ endif
ifeq ($(BR2_TARGET_ROOTFS_INITRAMFS),y)
define ROOTFS_ISO9660_INITRD
$(SED) '/initrd/d' $(ROOTFS_ISO9660_TARGET_DIR)/boot/grub/menu.lst
$(SED) '/__INITRD_PATH__/d' $(ROOTFS_ISO9660_TARGET_DIR)/boot/grub/menu.lst
endef
else
define ROOTFS_ISO9660_INITRD
$(INSTALL) -D -m 0644 $(BINARIES_DIR)/rootfs.cpio$(ROOTFS_CPIO_COMPRESS_EXT) \
$(ROOTFS_ISO9660_TARGET_DIR)/initrd
$(ROOTFS_ISO9660_TARGET_DIR)/boot/initrd
$(SED) "s%__INITRD_PATH__%/boot/initrd%" \
$(ROOTFS_ISO9660_TARGET_DIR)/boot/grub/menu.lst
endef
endif
@ -38,7 +40,10 @@ define ROOTFS_ISO9660_PREPARATION
$(ROOTFS_ISO9660_TARGET_DIR)/boot/grub/stage2_eltorito
$(INSTALL) -D -m 0644 $(ROOTFS_ISO9660_BOOT_MENU) \
$(ROOTFS_ISO9660_TARGET_DIR)/boot/grub/menu.lst
$(INSTALL) -D -m 0644 $(LINUX_IMAGE_PATH) $(ROOTFS_ISO9660_TARGET_DIR)/kernel
$(INSTALL) -D -m 0644 $(LINUX_IMAGE_PATH) \
$(ROOTFS_ISO9660_TARGET_DIR)/boot/$(LINUX_IMAGE_NAME)
$(SED) "s%__KERNEL_PATH__%/boot/$(LINUX_IMAGE_NAME)%" \
$(ROOTFS_ISO9660_TARGET_DIR)/boot/grub/menu.lst
$(ROOTFS_ISO9660_SPLASHSCREEN)
$(ROOTFS_ISO9660_INITRD)
endef

4
fs/iso9660/menu.lst
View File

@ -12,8 +12,8 @@ foreground 000000
background cccccc
title Buildroot ISO9660 image
kernel /kernel
initrd /initrd
kernel __KERNEL_PATH__
initrd __INITRD_PATH__
title Hard Drive (first partition)
rootnoverify (hd0)