[Arm-netbook] [status] EOMA68-jz4775 CPU Card

[Luke Kenneth Casson Leighton]

third one: in cooperation with ingenic we will be doing a JZ4775-based
CPU Card, i have received the schematics and PCB EVB files just today,
this is a dual-core 1ghz MIPS SoC with a dual 1Ghz X-Burst Vector
Processor that can do i believe it's 720p video decode and 3D
graphics. it's entirely software-based - no proprietary GPU or VPU -
which means it will also be FSF Endorseable (hooray!). again we will
follow their progress into next year's products, i would expect them
to have a quad-core out that can do 1080p video decode which would be
awesome if they did. power consumption is really low on the ingenic
SoCs.

i will put this one with 1gb of RAM. the layout of the EVB is quite
spread out, but i have made some measurements and it is *just*
(barely) possible to leave the DDR3 RAM layout untouched, the SoC will
almost be hard up against one edge and the RAM against the other: it
is going to be very tight, so there will be no extra interfaces except
for an SD/MMC Card. it does however have GbE which is fantastic, and
there are two USBs (one USB 480mbit/sec and one 11mbit/sec) - i will
route these both to the EOMA68 interface just out of sheer peversity.

more later as it happens.

l.

[freebirds]

Congratulations! Thanks Luke for supporting MIPS. I have been waiting
for a MIPS CPU card. I can donate. Please private message me.

"Unfortunately, MIPS Release 5 has the VZ module to support hardware
assisted virtualization." https://www.linux-mips.org/wiki/KVM Though
there is little information on the internet on the VZ module, most
likely it would be less of a surveillance threat than TrustZone and
Mobicore.

Post by Luke Kenneth Casson Leighton
third one: in cooperation with ingenic we will be doing a JZ4775-based
CPU Card, i have received the schematics and PCB EVB files just today,
this is a dual-core 1ghz MIPS SoC with a dual 1Ghz X-Burst Vector
Processor that can do i believe it's 720p video decode and 3D
graphics. it's entirely software-based - no proprietary GPU or VPU -
which means it will also be FSF Endorseable (hooray!). again we will
follow their progress into next year's products, i would expect them
to have a quad-core out that can do 1080p video decode which would be
awesome if they did. power consumption is really low on the ingenic
SoCs.
i will put this one with 1gb of RAM. the layout of the EVB is quite
spread out, but i have made some measurements and it is *just*
(barely) possible to leave the DDR3 RAM layout untouched, the SoC will
almost be hard up against one edge and the RAM against the other: it
is going to be very tight, so there will be no extra interfaces except
for an SD/MMC Card. it does however have GbE which is fantastic, and
there are two USBs (one USB 480mbit/sec and one 11mbit/sec) - i will
route these both to the EOMA68 interface just out of sheer peversity.
more later as it happens.
l.
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[Derek]

Post by freebirds
Congratulations! Thanks Luke for supporting MIPS. I have been waiting
for a MIPS CPU card. I can donate. Please private message me.
"Unfortunately, MIPS Release 5 has the VZ module to support hardware
assisted virtualization." https://www.linux-mips.org/wiki/KVM Though
there is little information on the internet on the VZ module, most
likely it would be less of a surveillance threat than TrustZone and
Mobicore.

Luke, I too would be interested in getting an FSF-endorseable card, so will
be following your progress on this card.

Freebirds, you don't know the technologies you're talking about. From the
linux-mips article about VZ: "The root is in full control of what the guest
is permitted to do, which allows a guest operating system to run unmodified
and unaware that it is being virtualised." If you are worried about
TrustZone, then you should be equally worried about VZ.

Me, on the other hand, I would like to have hardware support of
virtualization. I'm excited for this technology.

[Luke Kenneth Casson Leighton]

Post by Derek

Post by freebirds
Congratulations! Thanks Luke for supporting MIPS. I have been waiting
for a MIPS CPU card. I can donate. Please private message me.
"Unfortunately, MIPS Release 5 has the VZ module to support hardware
assisted virtualization." https://www.linux-mips.org/wiki/KVM Though
there is little information on the internet on the VZ module, most
likely it would be less of a surveillance threat than TrustZone and
Mobicore.

Luke, I too would be interested in getting an FSF-endorseable card, so will
be following your progress on this card.

awesome.

Post by Derek
Freebirds, you don't know the technologies you're talking about.

derek, please do educate her... preferably patiently... :)

[Miguel Garcia]

Post by Luke Kenneth Casson Leighton
this is a dual-core 1ghz MIPS SoC

Are you sure that JZ4775 is dual-core?

http://en.wikipedia.org/wiki/Ingenic_Semiconductor#XBurst1-based_SoCs
http://www.ingenic.cn/en/en/proinfo.php?id=14&pid=782&fid=782
ftp://ftp.ingenic.cn/SOC/JZ4775/JZ4775_DS.PDF

These links show that JZ4775 is single-core.

Thanks.

[Luke Kenneth Casson Leighton]

Post by Miguel Garcia

Post by Luke Kenneth Casson Leighton
this is a dual-core 1ghz MIPS SoC

Are you sure that JZ4775 is dual-core?

until you asked the question i was :)

Post by Miguel Garcia
http://en.wikipedia.org/wiki/Ingenic_Semiconductor#XBurst1-based_SoCs
http://www.ingenic.cn/en/en/proinfo.php?id=14&pid=782&fid=782
ftp://ftp.ingenic.cn/SOC/JZ4775/JZ4775_DS.PDF
These links show that JZ4775 is single-core.

yep thanks for checking that miguel, you're right it is.