Specify loading address for each multiboot module is not a perfect idea.
Which will make kernel does more work on memory initiation. BTW kernel's
loading address can be specified by multiboot header.
After all, this is my feedback, just for your information. Enjoy
Hi,
I will appreciate the comments from anybody on my ideas.
To Colyli:
You are right. Their "modaddr value" can do the same as my "addr =
value". The former told Grub to load all the rest modules starting
from address value ; while the later only specifies the current
module's loading address. However, modaddr can not set the loading
address of the kernel.
Regards,
Wei Shen
For the first idea, it is clear to me. I have no comment on
it.
For the second idea, I need more information. Can you explain
more for
the limition of "modaddr value" command, and how can the
limition to be
broken out by the "addr = value" option ?
Thanks.
Coly
Thanks for your advice.
Chen:
In grub command line, you can edit the configre (even
mistaken), so
maybe it will not be worth to add an edit in grub.
I do not mean the configure of Grub menu list, but the config
files of the OS, like boot.ini of Windows and inittab of
Linux.
An option to set the start address for grub to load
multiboot module is
great. This option will make kernel guys (who use
multiboot modules) to
initiate the kernel more easy. I remember a branch of
grub for L4 kernel
supports this option, maybe it can be a reference if
you are interested
in.
I know this approach, however, instead of an option, they add
a new command modaddr. A limitation is that all modules after
the "modaddr value" will be loaded in succession to a
overriding address below address value.
Best regards.
Coly
在 2007-03-23五的 23:46 +0800，Wei Shen
Hi,
I have two ideas and wonder whether they are welcome
as SoC projects.
1) Simple file editing
I think it is useful to add file edit function to
Grub. Thus, if a
config file which is required to boot the OS
successfully is
mistakenly written, we can still correct it in Grub
and need not to
reboot from the floppy or cdrom just for the
correcting.
I know it would greately increase the complexity of
Grub to support a
writable file system. However, if file writing does
not change the
block number of a file, things are much simpler.
Since most config
files are small (occupying only one block), I think
the solution will
work.
2) addr option for module command
Add nn option: "addr = value" to the module command.
If the addr
option is specified, Grub will load the module to
address value
instead of the default address.
Regards,
Wei Shen
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