Hi, On Tue, Nov 20, 2012 at 8:16 AM, Lee Jones <lee.jo...@linaro.org> wrote: >> > > +/* for automatic boot timing testcases */ >> > > +#define ATAG_BOOTTIME 0x41000403 >> > Where can I refer this ATAG usage? can you point out the reference URL >> > or patches? >> >> I assumed this would be in Mainline u-boot, but apparently not. >> On closer inspection of the internal ST-Ericsson u-boot, this >> functionality appears to be provided by patches which currently >> exist as delta. So in essence, the bootloader you use will have >> to be patched in a similar way for you to retrieve information >> surrounding bootloader boot times. >> >> And there was me thinking it was magic. ;) > > Okay, so I'm going through the motions of upstreaming this magic > now. Please see the link below for reference: > > http://marc.info/?l=u-boot&m=135342273317337&w=2
Given that U-Boot has bootstage, would it make sense to upstream that to the kernel? Some RFC patches were sent before this went into U-Boot to sound out the interest. http://lwn.net/Articles/460432/ Regards, Simon > > -- > Lee Jones > Linaro ST-Ericsson Landing Team Lead > Linaro.org │ Open source software for ARM SoCs > Follow Linaro: Facebook | Twitter | Blog > > _______________________________________________ > linux-arm-kernel mailing list > linux-arm-ker...@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
