David Daney wrote:
> Marc St-Jean wrote:
> >
> > Sergei Shtylyov wrote:
> >> Hello.
> >>
> >> Marc St-Jean wrote:
> >>
> >> > [PATCH 2/5] mips: PMC MSP71xx mips common
> >>
> >> > Patch to add mips common support for the PMC-Sierra
> >> > MSP71xx devices.
> >>
> >> > These 5 patches along with the previously posted serial patch
> >> > will boot the PMC-Sierra MSP7120 Residential Gateway board.
> >>
> >> > Signed-off-by: Marc St-Jean <Marc_St-Jean@pmc-sierra.com>
> >>
> >> > diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
> >> > index 5da6b0d..d512389 100644
> >> > --- a/arch/mips/Kconfig
> >> > +++ b/arch/mips/Kconfig
> >> [...]
> >>
> >> > +menu "Options for PMC-Sierra MSP chipsets"
> >> > + depends on PMC_MSP
> >> > +
> >> > +config PMC_MSP_EMBEDDED_ROOTFS
> >> > + bool "Root filesystem embedded in kernel image"
> >> > + select MTD
> >> > + select MTD_BLOCK
> >> > + select MTD_PMC_MSP_RAMROOT
> >> > + select MTD_RAM
> >> > +
> >>
> >> Hm, why not just use initramfs?
> >
> > I investigated this as part of an earlier thread. Initramfs
> > is not a read-only "ROM" fs but a compressed writable fs.
> > Once expanded it will take more memory.
> >
> > To lower memory usage for embedded usage of our devices we've
> > added a method to embedded cramfs/squashfs file systems into
> > the kernel image.
> >
>
> Why not just run the cramfs/squashfs on a standard mdtblock device?
We and our customers do that as well but it's handy to have a single
RAM-based image to download during early development.
MArc
>
> > I've made sure it was unobtrusive and that no linker script
> > changes, etc. were required.
> >
> >
>
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