#linux-sunxi on 2017-09-06 — irc logs at freenode.irclog.whitequark.org

2015-02-18 19:37 Turl changed the topic of #linux-sunxi to: Allwinner/sunxi /development discussion - did you try looking at our wiki? https://linux-sunxi.org - Don't ask to ask. Just ask and wait! - https://github.com/linux-sunxi/ - Logs at http://irclog.whitequark.org/linux-sunxi

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00:08 <dave0x6d> willmore: cryptodev_sw_armv8_perftest http://dpdk.org/doc/guides/cryptodevs/armv8.html

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00:39 <willmore> dave0x6d, where do I find that program?

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00:45 <willmore> Google is being unhelpful.

00:47 <dave0x6d> willmore: git clone git://dpdk.org/dpdk

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01:43 <willmore> There's a lot of stuff in there, dave0x6d

01:43 <dave0x6d> willmore: ah, https://software.intel.com/en-us/articles/get-started-with-ipsec-acceleration-in-the-fdio-vpp-project

01:50 <willmore> Geez, what noob designed this build environment? Uggg.... Okay, configured and building. This will take a long time as it doesn't appear to be properly segmented.

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01:51 <willmore> Nope, failed.

01:52 <willmore> dave0x6d, okay, I'm out of time and brain for tonight. I'll look more at it in the morning.

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04:06 <anarsoul> is there a way to load 64-bit SPL and 64-bit u-boot using FEL?

04:06 <anarsoul> on A64 board

04:10 <smaeul> you need another loader to warm reset into aarch64 mode

04:10 <smaeul> since you can't switch at runtime

04:11 <smaeul> er, SPL does that for you

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04:12 <smaeul> so a 64-bit SPL will still start out in aarch32 mode -- you should be able to run it directly

04:17 <anarsoul> smaeul: I guess the tricky part here is 'u-boot'

04:18 <smaeul> what's tricky about it?

04:18 <smaeul> ah, you need to have DRAM on to load it

04:18 <anarsoul> yep

04:19 <anarsoul> and 64-bit SPL doesn't know how to jump back to FEL (which is 32-bit code)

04:19 <smaeul> so use a 32-bit SPL to turn on DRAM, jump back to FEL, load 64-bit SPL and u-boot

04:20 <anarsoul> smaeul: I'll have to disable DRAM init in 64-bit SPL

04:21 <smaeul> then use a tiny program that warm resets to ATF after returning to FEL?

04:23 <MoeIcenowy> nope

04:23 <MoeIcenowy> no need to load 64-bit SPL

04:24 <MoeIcenowy> the reset64 command in sunxi-spl can do the reset to ATF

04:24 <MoeIcenowy> you need to run 32-bit SPL, then load ATF and U-Boot, then reset64 to ATF

04:29 <anarsoul> MoeIcenowy: so there's no way to test 64-bit SPL using FEL?

04:35 <MoeIcenowy> yes

04:36 <MoeIcenowy> I think 64-bit SPL cannot properly get back to 32-bit FEL

04:36 <anarsoul> atm it can't

04:36 <anarsoul> I thinking about teaching it how to get back to 32-bit FEL

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04:37 <anarsoul> unfortunately it's pretty close to 32k limit

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13:54 <buZz> k

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14:04 <Mo> KotCzarny: Hi, I had that ASM1153 with wrong descriptor of some ASM1051, so UAS is broken. I got a patch that should make UAS enabled brute-force, but I'm not sure if I applied it correctly, as I don't see any error from the uas module: https://www.mail-archive.com/linux-usb@vger.kernel.org/msg94110.html

14:05 <Mo> I'm quite sure that hardware is UAS capable and the ASM1153 should be.

14:05 <KotCzarny> if performance is better than with usb-storage module, then it's working. beware of new hw though.

14:06 <Mo> But you can't detect it just from performance, performance is a matter of taste. Here it is running as usb-storage, from syslog messages, and from the usb descriptor.

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14:06 <KotCzarny> if it works as expected yes, you can. 35->40MB/s usually

14:06 <KotCzarny> and much lower cpu usage

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14:26 <KotCzarny> and if it's showing it uses mass storage, then it's not using uasp. lsusb will tell

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14:29 <MoeIcenowy> And I remember when using UAS the dmesg will say usb x-x.x: uas

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16:12 <jmcneill> agraf: skrll found the problem -- TRE bit was set in SCTLR

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20:29 <anarsoul|2> if I understand correctly, it shouldn't be hard to fix FEL for 64-bit SPL

20:30 <anarsoul|2> so basically I need to stash FEL SP and LR in save_boot_params before doing switch to aarch64 using RMR

20:31 <anarsoul|2> and then I can just do RMR switch back to aarch32 and jump directly into return_to_fel helper

20:31 <anarsoul|2> it can be modified in the way that it doesn't need any arguments -- currently it expects SP and LR values to be passed

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20:40 <anarsoul|2> MoeIcenowy: see above, what you you think about it?

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21:00 <agraf> jmcneill: awesome :)

21:17 <anarsoul|2> smaeul: ping

21:17 <smaeul> anarsoul|2: pong

21:18 <anarsoul|2> will my idea (see above) work?

21:19 <anarsoul|2> I know that I'll have to compile 32-bit parts using armv7 compiler and put them as a binary, just as someone did for rmr_switch.S

21:19 <smaeul> possibly, you also need to save cpsr

21:20 <anarsoul|2> smaeul: they already save it, see arch/arm/cpu/armv7/sunxi/fel_utils.S

21:23 <smaeul> anarsoul|2: it also looks like save_boot_params is already saving sp and lr too

21:24 <smaeul> sorry, I don't know too much about FEL, I only reverse engineered the other half of the BROM :)

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21:26 <smaeul> I wonder if you could drop down to EL1/EL2 to re-run FEL

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