|To:||Marc St-Jean <Marc_St-Jean@pmc-sierra.com>|
|Subject:||Re: [PATCH 2/5] mips: PMC MSP71xx mips common|
|From:||David Daney <firstname.lastname@example.org>|
|Date:||Fri, 23 Feb 2007 13:02:55 -0800|
|Cc:||Sergei Shtylyov <email@example.com>, firstname.lastname@example.org|
|User-agent:||Thunderbird 188.8.131.52 (X11/20070212)|
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?
I've made sure it was unobtrusive and that no linker script changes, etc. were required.
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