>We've been working on getting a ridiculously fast Linux boot this
>week. We've updated the TS7300 MAX2 CPLD to include a 32-bit
>counter that starts counting at 14.7Mhz approx 100uS (0.000001 s)
>after poweron to measure our optimization progress. (This starts
>even before the power-on-reset circuit finishes its 200mS power-
>supply stabilization delay) We've made some changes to the kernel,
>busybox and to our TS-SDBOOT code for speed improvements. What
>we've come up with is a "fast-boot" mode that becomes enabled with
>jumper JP6 that boots straight to a busybox shell in less than 2.7
>seconds (actually 2.676s currently, but still improving) After
>2.676s, the kernel is booted, initrd decompressed, SD card module
>loaded, Debian filesystem is mounted, and shell prompt '$' has been
>transmitted to serial.
>We should release these modifications within a few days... We're
>still trying to squeeze a few more tenths of a second. Below is the
>output of the fastboot dump-- as you can see we don't print kernel
>messages any more either (we got a couple tenths of a second from
>that).
Before to change the debian linux, I want to test somme possibilites
with the fast boot mode with a bigest initrd ...
Jesse, Have you release the fast boot mode on TS7300 ?
--- In "Jesse Off" <> wrote:
>
> --- In "suptouch" <suptouch@> wrote:
>
> > power-off the board when I does'nt use it (with a external
> > µcontrolor). I need a fast reboot process of only 5sec for a spi
> > module ..... So, I really need to optimize the TS7300 :-)
>
> We've been working on getting a ridiculously fast Linux boot this
> week. We've updated the TS7300 MAX2 CPLD to include a 32-bit
> counter that starts counting at 14.7Mhz approx 100uS (0.000001 s)
> after poweron to measure our optimization progress. (This starts
> even before the power-on-reset circuit finishes its 200mS power-
> supply stabilization delay) We've made some changes to the kernel,
> busybox and to our TS-SDBOOT code for speed improvements. What
> we've come up with is a "fast-boot" mode that becomes enabled with
> jumper JP6 that boots straight to a busybox shell in less than 2.7
> seconds (actually 2.676s currently, but still improving) After
> 2.676s, the kernel is booted, initrd decompressed, SD card module
> loaded, Debian filesystem is mounted, and shell prompt '$' has been
> transmitted to serial.
>
> We should release these modifications within a few days... We're
> still trying to squeeze a few more tenths of a second. Below is the
> output of the fastboot dump-- as you can see we don't print kernel
> messages any more either (we got a couple tenths of a second from
> that)
>
>
> >> TS-SDBOOT - built 09:59:18, Jun 20 2006
> >> Copyright (C) 2006, Technologic Systems
> .
> .
> .
> Finished booting in 2.676 seconds
> Type 'exit' for full boot - remove JP6 to make this the default
> $
>
>
>
> //Jesse Off
>
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