Differences

This shows you the differences between two versions of the page.

--- multiboot [2011/12/14 17:26] – created cloning sosboot page tequila
+++ multiboot [2011/12/14 18:02] (current) – [MultiBoot Image] tequila
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+DELETEME
+**This image has still not been heavily tested, so use it at your own risk and DON'T forget to make backup before testing it.**
+DELETEME
  ====== MultiBoot Image ======
 MultiBoot is a minimalistic self containing linux system designed to solely fit inside the Recovery partition of the AC100.
+It offers a multiboot menu thanks to [[http://kexecboot.org|KexecBoot]] project using a modified 2.6.38 kernel. This kernel supports the kexec syscall, so any linux distro can virtually be booted with this MultiBoot image, including Android.
 ===== Installation =====
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 ===== Usage =====
+Create a /boot subfolder in any MMC partition. To try it, you can just use any SD Card large enought to contain a kernel image and an initrd: 8Mb can be enought but more is better ;)
+When booting, Kexecboot will scan all available partition for a /boot subfolder.
+Create a config file named boot.cfg. You may just used the example from: https://gitorious.org/~tequila/ac100/tequilas-ac100-multiboot/blobs/master/config/boot.cfg
+In that example, zImage kernel and initrd.img initramfs are in the same folder than boot.cfg.
+The path for KERNEL and INITRD lines are from the base of the used partition.
+Check eventually the [[kexecboot.org/documentation|KexecBoot documentation]].
+Boot your device on multiboot, wait few seconds, select the kernel you want with the arrow keys, than press Enter.
 ===== Tips and Tricks =====
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 ===== Technical details =====
+Essentially, kernel is modified to not disable D-cache during machine_kexec call.
+In the kernel configuration, it is important to disable SMP and THUMBEE to have kexec syscall working.