> Hi, everyone!
>
> I'm a bit confused about the flash chip and the partitions on it so i'm
> hoping than someone out there knows what is what.
>
> During normal boot '/dev/mtdblock1' is used as boot device. After a
> NFS-boot I can mount /dev/mtdblock/1 which is then equal to the content
> of the '/dev/mtdblock1' partiton. This indicates that the ~30Mb linux
> device is actuallt partition1 of the flash device.
>
> In the documentation and from the boot messages from the kernel the
> following information is given.
>>> Creating 3 MTD partitions on "NAND 32MiB 3,3V 8-bit":
>>> 0x00000000-0x00004000 : "TS-BOOTROM"
>>> 0x00004000-0x01d04000 : "Linux"
>>> 0x01d04000-0x02000000 : "RedBoot"
> This indicates that 256Kb is "TS-BOOTROM", ~30Mb is for "Linux" and ~2Mb
> is RedBoot.
>
> From "fis list" i get the following:
>>> (reserved) 0x60000000 0x60000000 0x01D04000 0x00000000
>>> RedBoot 0x61D04000 0x61D04000 0x00040000 0x00000000
>>> vmlinux 0x61D44000 0x00218000 0x000A8000 0x00218000
>>> RedBoot config 0x61FF8000 0x61FF8000 0x00001000 0x00000000
>>> FIS directory 0x61FFC000 0x61FFC000 0x00004000 0x00000000
> Which indicates that, flash adress space starts at 1.5Gb, first we
> have ~30Mb reserved space, then 256Kb RedBoot followed by 670Kb vmlinux
> and the 4Kb of RedBoot config and 16Kb of FIS directory.
>
> I'm confused, how are all these figures connected?
The fis list basically is a breakdown of files stored the "RedBoot"
partition relative to the MTD partition list. However the fis list has some
knowledge of the entire flash, hence the "(reserved)" space in "fis list",
which specifies the area of flash outside of RedBoot. Because of the way
RedBoot addresses flash memory, 0x60000000 is the start of the flash, so you
will notice that "RedBoot" in the "fis list" starts at the same offset as it
does in the MTD partition list when you take this into account.
> Regards Per Öberg
Regards,
Michael
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