svn commit: r274739 - head/sys/mips/conf

[Mark R V Murray]

> On 24 Nov 2014, at 05:28, Ian Lepore <ian at FreeBSD.org> wrote:
> 
> But I got some logging that maybe will be useful to you, attached.  This
> is the boot logging from hitting the reset button 4 times in a row.  I
> had RANDOM_DEBUG and FORTUNA options on.

Thanks.

> In the random debugging printf for device attach I added a display of
> the actual bits being fed in as well as the count.  That data in tabular
> form (from 3 of the 4 runs so it fits email width) is interesting:
> 
> nexus0:    0x00000010c6f7a0b6 0x00000010c6f7a0b6 0x00000010c6f7a0b6
> at91_aic0: 0x00000010c6f7a0b6 0x00000010c6f7a0b6 0x00000010c6f7a0b6
> at91_pmc0: 0x00000010c6f7a0b6 0x00000010c6f7a0b6 0x00000010c6f7a0b6
> at91_st0:  0x0000003254e6e222 0x0000003254e6e222 0x0000003254e6e222
> mmc0:      0x0000000000000000 0x0000000000000000 0x0000020000000000
> at91_mci0: 0x0004480000000000 0x0004480000000000 0x00044e0000000000
> ukphy0:    0x0001980000000000 0x00019a0000000000 0x0001960000000000
> miibus0:   0x00060a0000000000 0x00060c0000000000 0x00060a0000000000
> ate0:      0x000d260000000000 0x000d280000000000 0x000d2a0000000000
> uart0:     0x0001400000000000 0x0001400000000000 0x0001400000000000
> atmelarm0: 0x00231cc9539b8887 0x00231ec9539b8887 0x002328c9539b8887
> mmcsd0:    0x0002620000000000 0x0002620000000000 0x0002620000000000

Those numbers look weird; please send a diff of your change.

The number of devices probed is also low. When you get the booting
problem sorted, there are some constants that we could change that
may help.

> This nicely illustrates one of the main points I've been trying to make
> for a long time:  This kind of system boots nearly identically every
> time you power on or reset.  On every boot, all that "entropy" that's
> getting fed in is about the same as last time it booted.  In addition to
> the low quantity of data available, when you consider its similarity
> from one reboot to the next it's hard to even grace it with the name
> "entropy.”

I’m well aware of that; I’ve been saying something similar since at
least 2000.

M
-- 
Mark R V Murray