initial

1 files changed, 166 insertions, 0 deletions

diff --git a/grub.cfg b/grub.cfg
new file mode 100644
index 0000000..ca45ec2
--- /dev/null
+++ b/grub.cfg
@@ -0,0 +1,166 @@
+set prefix=(memdisk)/boot/grub
+
+insmod nativedisk
+insmod ehci
+insmod ohci
+insmod uhci
+insmod usb
+insmod usbms
+insmod usbserial_pl2303
+insmod usbserial_ftdi
+insmod usbserial_usbdebug
+
+# Serial and keyboard configuration, very important.
+serial --speed=115200 --unit=0 --word=8 --parity=no --stop=1
+terminal_input --append  serial
+terminal_output --append serial
+terminal_input --append at_keyboard
+terminal_output --append cbmemc
+
+gfxpayload=keep
+terminal_output --append gfxterm
+
+# Default to first option, automatically boot after 1 second
+set default="0"
+set timeout=5
+
+# This is useful when using 'cat' on long files on GRUB terminal
+set pager=1
+insmod jpeg
+
+background_image (cbfsdisk)/background.jpg
+loadfont (memdisk)/dejavusansmono.pf2
+
+keymap usqwerty
+function try_user_config {
+	set root="${1}"
+	for dir in boot grub grub2 boot/grub boot/grub2; do
+		for name in '' autoboot_ libreboot_ coreboot_; do
+			if [ -f /"${dir}"/"${name}"grub.cfg ]; then
+				configfile /"${dir}"/"${name}"grub.cfg
+			fi
+		done
+	done
+}
+function search_grub {
+	for i in 0 1 2 3; do
+		# raw devices
+		try_user_config "(${1}${i})"
+		for part in 1 2 3 4 5; do
+			# MBR/GPT partitions
+			try_user_config "(${1}${i},${part})"
+		done
+	done
+}
+function try_isolinux_config {
+	set root="${1}"
+	for dir in '' /boot; do
+		if [ -f "${dir}"/isolinux/isolinux.cfg ]; then
+			syslinux_configfile -i "${dir}"/isolinux/isolinux.cfg
+		elif [ -f "${dir}"/syslinux/syslinux.cfg ]; then
+			syslinux_configfile -s "${dir}"/syslinux/syslinux.cfg
+		fi
+	done
+}
+function search_isolinux {
+	for i in 0 1; do
+		# raw devices
+		try_isolinux_config "(${1}${i})"
+		for part in 1 2 3 4 5; do
+			# MBR/GPT partitions
+			try_isolinux_config "(${1}${i},${part})"
+		done
+	done
+}
+menuentry 'Load Operating System (incl. fully encrypted disks)  [o]' --hotkey='o' {
+# GRUB2 handles (almost) every possible disk setup, but only the location of
+# /boot is actually important since GRUB2 only loads the user's config.
+
+# LVM, RAID, filesystems and encryption on both raw devices and partitions in
+# all various combinations need to be supported. Since full disk encryption is
+# possible with GRUB2 as payload and probably even used by most users, this
+# configuration tries to load the operating system in the following way:
+
+# 1. Look for user configuration on unencrypted devices first to avoid
+# unnecessary decryption routines in the following order:
+
+#	1) raw devices and MBR/GPT partitions
+	search_grub ahci
+    search_grub ata
+#	2) LVM and RAID which might be used accross multiple devices
+	lvm="lvm/matrix-rootvol lvm/matrix-boot"
+	raid="md/0 md/1 md/2 md/3 md/4 md/5 md/6 md/7 md/8 md/9"
+	for vol in ${lvm} ${raid}; do
+		try_user_config "(${vol})"
+	done
+# 2. In case no configuration could be found, try decrypting devices. Look
+# on raw crypto devices as well as inside LVM volumes this time.
+
+#	The user will be prompted for a passphrase if a LUKS header was found.
+	for dev in ahci0 ata0 ${lvm}; do
+		cryptomount "(${dev})"
+	done
+#	3) encrypted devices/partitions
+	for i in 0 1; do
+		for part in 1 2 3 4 5; do
+            for type in ahci ata; do
+    			cryptomount "(${type}${i},${part})"
+            done
+		done
+	done
+
+#	3) encrypted devices/partitions
+	search_grub crypto
+#	4) LVM inside LUKS containers
+	for vol in ${lvm}; do
+		try_user_config "(${vol})"
+	done
+
+    # Last resort, if all else fails
+    set root=ahci0,1
+    for p in / /boot/; do
+        if [ -f "${p}vmlinuz" ]; then
+            linux ${p}vmlinuz root=/dev/sda1 rw
+            if [ -f "${p}initrd.img" ]; then
+                initrd ${p}initrd.img
+            fi
+        fi
+    done
+
+    # Last resort (for GA-G41-ES2L which uses IDE emulation mode for SATA)
+    set root=ata0,1
+    for p in / /boot/; do
+        if [ -f "${p}vmlinuz" ]; then
+            linux ${p}vmlinuz root=/dev/sda1 rw
+            if [ -f "${p}initrd.img" ]; then
+                initrd ${p}initrd.img
+            fi
+        fi
+    done
+}
+menuentry 'Search ISOLINUX menu (AHCI)  [a]' --hotkey='a' {
+	search_isolinux ahci
+}
+menuentry 'Search ISOLINUX menu (USB)  [u]' --hotkey='u' {
+	search_isolinux usb
+}
+menuentry 'Search ISOLINUX menu (CD/DVD)  [d]' --hotkey='d' {
+	insmod ata
+	for dev in ata0 ata1 ata2 ata3 ahci1; do
+		try_isolinux_config "(${dev})"
+	done
+}
+menuentry 'Load test configuration (grubtest.cfg) inside of CBFS  [t]' --hotkey='t' {
+	set root='(cbfsdisk)'
+	configfile /grubtest.cfg
+}
+menuentry 'Search for GRUB2 configuration on external media  [s]' --hotkey='s' {
+	search_grub usb
+}
+menuentry 'Poweroff  [p]' --hotkey='p' {
+	halt
+}
+menuentry 'Reboot  [r]' --hotkey='r' {
+	reboot
+}
+