On 2016-Oct-24, at 2:00 PM, Emmanuel Vadot <manu at bidouilliste.com> wrote:
> Hello Mark, > > The A83T is BIG/Little IIRC and we don't support that. That's why you > only see 4 cores on the 8. That is not what I get from reading the A83T documentation. All the CPU references are to the same type of CPU for each of the 8. But there is a NUMA-ish pair of "clusters" of "CPU"s without a common L2-cache or other cache across the clusters. http://linux-sunxi.org/A83T says . . . > This SoC does NOT comply with the ARM big.LITTLE architecture, therefore it > is in no way energy efficent and gets very hot. > CPU: > • ARM Cortex-A7 Octa-Core A83T_Datasheet_v1.3_20150510.pdf says: > Main features of A83T include: > • CPU architecture: Based on an octa-core CortexTM-A7 CPU architecture, . . .. > 2.1. CPU Architecture > > • ARMv7 ISA standard instruction set plus Thumb-2 and Jazeller RCT > > • NEON with SIMD and VFPv4 > > • Support LPAE > > • 32KB I-cache and 32KB D-cache per CPU > > • 1MB L2-cache The "A883T Block Diagram (Figure 3-1 page labeled 12) simply says "A7 x 8". A83T_User_Manual_v1.5.1_20150513.pdf has some more detailed diagrams and more information. . . There are two CPU Clusters (0 and 1). It is more of a NUMA context due to caching within each cluster that is not across the clusters. This document's wording is more explicit, mentioning clusters for the L2-cache level (page labeled 51) in even its basic description of caches in the A83T archtiecture: > 2.1.1. CPU Architecture > > The A83T platform is based on octa-core CortexTM-A7 CPU architecture. > > • ARMv7 ISA standard instruction set plus Thumb-2 and Jazeller RCT > > • NEON with SIMD and VFPv4 support > > • Support LPAE > > • 32KB I-cache and 32KB D-cache per CPU > > • 1MB L2-cache(512KB per Cluster) See this document's Figure 3-1 "System Bus Tree" (on the page labeled 66). From what I read one can control clock frequencies per cluster but it is allowed to have them both the same all the time that frequencies are stable for a while. And I'll stop with the details that I see with that. There may be some folks around with knowledge of more detail that might well be able to say "but it is not NUMA like for these details . . .". By no mean have I analyzed all the consequences of all the details. But I find no evidence of BIG/Little use of different classes of cores at necessarily different cock rates and the like. As much as I've looked at looks more symmetric than that. > cpulist0 shows 8 core because every core in is the dtb. > > On Mon, 24 Oct 2016 09:04:35 -0700 > Mark Millard <mar...@dsl-only.net> wrote: > >> The is for a Banana Pi M3 V1.2 board with the barrel power connector. The 5V >> 2A supply that I had to fit the barrel hole can not power the board >> sufficiently to boot --even when no fan is being powered. In order to boot >> with a fan I have both that and an official rpi3 power supply plugged in. >> The rpi3 power supply will not power the GPIO fan connections but can boot >> the board by itself (V5.1v and 2.5A but cell phone charger >> cabling/connections). I've got a heat sink on the CPU as well. >> >>> root@bananapi-m3:~ # uname -apKU >>> FreeBSD bananapi-m3 11.0-STABLE FreeBSD 11.0-STABLE #0 r307797M: Mon Oct 24 >>> 00:41:16 PDT 2016 >>> markmi@FreeBSDx64:/usr/local/src/crochet/work/obj/arm.armv6/usr/src/sys/ALLWINNER >>> arm armv6 1100505 1 >>> 100505 >> >>> root@bananapi-m3:~ # freebsd-version -ku >>> 11.0-STABLE >>> 11.0-STABLE >> >> In the below note that "FreeBSD/SMP: Multiprocessor System Detected: 4 CPUs" >> but cpulist0 shows cpu0 through cpu7. For now: So much for seeing how >> buildworld/buildkernel would go using all 8 cores. >> >> (Note: the serial connection tends to drop some text sometimes. That may >> have happened some for the below.) >> >>> root@bananapi-m3:~ # dmesg | more >>> Copyright (c) 1992-2016 The FreeBSD Project. >>> Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994 >>> The Regents of the University of California. All rights reserved. >>> FreeBSD is a registered trademark of The FreeBSD Foundation. >>> FreeBSD 11.0-STABLE #0 r307797M: Mon Oct 24 00:41:16 PDT 2016 >>> >>> markmi@FreeBSDx64:/usr/local/src/crochet/work/obj/arm.armv6/usr/src/sys/ALLWINNER >>> arm >>> FreeBSD clang version 3.8.0 (tags/RELEASE_380/final 262564) (based on LLVM >>> 3.8.0) >>> VT: init without driver. >>> CPU: Cortex A7 rev 5 (Cortex-A core) >>> Supported features: ARM_ISA THUMB2 JAZELLE THUMBEE ARMv4 Security_Ext >>> WB enabled LABT branch prediction disabled >>> LoUU:2 LoC:3 LoUIS:2 >>> Cache level 1: >>> 32KB/64B 4-way data cache WB Read-Alloc Write-Alloc >>> 32KB/32B 2-way instruction cache Read-Alloc >>> Cache level 2: >>> 512KB/64B 8-way unified cache WB Read-Alloc Write-Alloc >>> real memory = 2147483648 (2048 MB) >>> avail memory = 2090852352 (1993 MB) >>> FreeBSD/SMP: Multiprocessor System Detected: 4 CPUs >>> random: entropy device external interface >>> kbd0 at kbdmux0 >>> ofwbus0: <Open Firmware Device Tree> >>> aw_ccu0: <Allwinner Clock Control Unit> on ofwbus0 >>> clk_fixed0: <Fixed clock> on aw_ccu0 >>> clk_fixed1: <F PLL Clock> mem 0x1c20028-0x1c2002b on aw_ccu0 >>> clk_fixed3: <Fixed factor clock> on aw_ccu0 >>> aw_ahbclk0: <Allwinner AHB Clock> mem 0x1c20054-0x1c20057 on aw_ccu0 >>> aw_apbclk0: <Allwinner APB Clock> mem 0x1c20054-0x1c20057 on aw_ccu0 >>> aw_apbclk1: <Allwinner APB Clock> mem 0x1c20058-0x1c2005b on aw_ccu0 >>> aw_ahbclk1: <Allwinner AHB Clock> mem 0x1c2005c-0x1c2005f on aw_ccu0 >>> aw_gate0: <Allwinner Bus Clock Gates> mem 0x1c20060-0x1c2006f on aw_ccu0 >>> aw_mmcclk0: <Allwinner MMC Clock> mem 0x1c20088-0x1c2clk1: <Allwinner MMC >>> Clock> mem 0x1c2008c-0x1c2008f on aw_ccu0 >>> aw_mmcclk2: <Allwinner MMC Clock> mem 0x1c20090-0x1c20093 on aw_ccu0 >>> aw_cpusclk0: <Allwinner CPUS Clock> mem 0x1f01400-0x1f01403 on aw_ccu0 >>> clk_fixed4: <Fixed factor clock> on aw_ccu0 >>> aw_apbclk2: <Allwinner APB Clock> mem 0x1f0140c-0x1f0140f on aw_ccu0 >>> aw_gate1: <Allwinner APB0 Clock Gates> mem 0x1f01428-0x1f0142b on aw_ccu0 >>> aw_pll1: <Allwinner PLL Clock> mem 0x1c20044-0x1c20047 on aw_ccu0 >>> aw_usbclk0: <Allwinner USB Clocks> mem 0x1c200cc-0x1c200cf on aw_ccu0 >>> clk_fixed5: <Fixed clr GMAC Clock> mem 0x1c00030-0x1c00033 on aw_ccu0 >>> simplebus0: <Flattened device tree simple bus> on ofwbus0 >>> aw_reset0: <Allwinner Module Resets> mem 0x1c202c0-0x1c202cb on simplebus0 >>> aw_reset1: <Allwinner Module Resets> mem 0x1c202d0-0x1c202d3 on simplebus0 >>> aw_reset2: <Allwinner Module Resets> mem 0x1c202d8-0x1c202db on simplebus0 >>> aw_reset3: <Allwinner Module Resets> mem 0x1f014b0-0x1f014b3 on simplebus0 >>> iichb0: <Allwinner Integrated I2C Bus Controller> mem 0x1c2ac00-0x1c2afff >>> on simplebus0 >>> iicbus0: hb0 >>> iichb1: <Allwinner Integrated I2C Bus Controller> mem 0x1c2b000-0x1c2b3ff >>> on simplebus0 >>> iicbus1: <OFW I2C bus> on iichb1 >>> iichb2: <Allwinner Integrated I2C Bus Controller> mem 0x1c2b400-0x1c2b7ff >>> on simplebus0 >>> iicbus2: <OFW I2C bus> on iichb2 >>> regfix0: <Fixed Regulator> on ofwbus0 >>> regfix1: <Fixed Regulator> on ofwbus0 >>> regfix2: <Fixed Regulator> on ofwbus0 >>> regfix3: <Fixed Regulator> on ofwbus0 >>> regfix4: <Fixed Regulator> on ofwbus0 >>> aw_sid0: <Allwinner Secure ID Controller> mem 0x1c14000-0x1c143ff on >>> simplebus0 >>> awusbphy0: <Allwinner USB PHY> on simplebu,0x1c86000-0x1c87fff on simplebus0 >>> gic0: pn 0x20, arch 0x2, rev 0x1, implementer 0x43b irqs 224 >>> gpio0: <Allwinner GPIO/Pinmux controller> mem 0x1c20800-0x1c20bff on >>> simplebus0 >>> gpiobus0: <OFW GPIO bus> on gpio0 >>> gpio1: <Allwinner GPIO/Pinmux controller> mem 0x1f02c00-0x1f02fff on >>> simplebus0 >>> gpiobus1: <OFW GPIO bus> on gpio1 >>> aw_nmi0: <Allwinner NMI Controller> mem 0x1f00c0c-0x1f00c43 on simplebus0 >>> generic_timer0: <ARMv7 Generic Timer> on ofwbus0 >>> Timecounter "cy 24000000 Hz quality 1000 >>> Event timer "ARM MPCore Eventtimer" frequency 24000000 Hz quality 1000 >>> cpulist0: <Open Firmware CPU Group> on ofwbus0 >>> cpu0: <Open Firmware CPU> on cpulist0 >>> cpu1: <Open Firmware CPU> on cpulist0 >>> cpu2: <Open Firmware CPU> on cpulist0 >>> cpu3: <Open Firmware CPU> on cpulist0 >>> cpu4: <Open Firmware CPU> on cpulist0 >>> cpu5: <Open Firmware CPU> on cpulist0 >>> cpu6: <Open Firmware CPU> on cpulist0 >>> cpu7: <Open Firmware CPU> on cpulist0 >>> a10_mmc0: <Allwinner Integrated MMC/SD controller> mem 0x1c0f000-0x1c0ffff >>> on simplebus0 >>> mmc0: <MMC/SD bus> on a10_mmc0 >>> a10_mmc1: <Allwinner Integrated MMC/SD controller> mem 0x1c11000-0x1c11fff >>> on simplebus0 >>> mmc1: <MMC/SD bus> on a10_mmc1 >>> gpioc0: <GPIO controller> on gpio0 >>> aw_wdog0: <Allwinner A31 Watchdog> mem 0x1c20ca0-0x1c20cbf on simplebus0 >>> uart0: <Non-standard ns8250 class UART with FIFOs> mem 0x1c28000-0x1c283ff >>> on simplebus0 >>> uart0: console (480769,n,8,1) >>> gpioc1: <GPIO controller> on gpio1 >>> iichb3: <Allwinner RSB> mem 0x1f03400-0x1f037ff on simplebus0 >>> iicbus3: <OFW I2C bus> on iichb3 >>> iic0: <I2C generic I/O> on iicbus3 >>> axp81x_pmu0: <X-Powers AXP81x Power Management Unit> at addr 0x746 on >>> iicbus3 >>> gpiobus2: <OFW GPIO bus> on axp81x_pmu0 >>> gpioled0: <GPIO led> at pin 0 on gpiobus2 >>> gpioled1: <GPIO led> at pin 1 on gpiobus2 >>> gpioc2: <GPIO controller> on axp81x_pmu0 >>> iic1: <I2C generic I/O> on iicbus0 >>> iic2: <I2C generic I/O> on iicbus1 >>> iic3: <I2C generic I/O> on iicbus2 >>> ehci0: <Allwinner Integrated USB 2.0 controller> mem 0x1c1a000-0x1c1a0ff on >>> simplebus0 >>> usbus0: EHCI version 1.0 >>> usbus0 on ehci0 >>> ehci1: <Allwinner Integrated USB 2.0 controller> mem 0x1c1b000-0x1c1b0ff on >>> simplebus0 >>> usbus1: EHCI version 1.0 >>> usbus1 on ehci1 >>> awg0: <Allwinner Gigabit Ethernet> mem 0x1c30000-0x1c300ff on simplebus0 >>> miibus0: <MII bus> on awg0 >>> rgephy0: <RTL8169S/8110S/8211 1000BASE-T media interface> PHY 0 on miibus0 >>> rgephy0: none, 10baseT, 10baseT-FDX, 10baseT-FDX-flow, 100baseTX, >>> 100baseTX-FDX, 100baseTX-FDX-flow, 1000baseT, 1000baseT-master, >>> 1000baseT-FDX, 1000baseT-FDX-master, 1000baseT-FDX-flow, 1000baseT-FD >>> X-flow-master, auto, auto-flow >>> rgephy1: <RTL8169S/8110S/8211 1000BASE-T media interface> PHY 1 on miibus0 >>> rgephy1: none, 10baseT, 10baseT-FDX, 10baseT-FDX-flow, 100baseTX, >>> 100baseTX-FDX, 100baseTX-FDX-flow, 1000baseT, 1000baseT-master, >>> 1000baseT-FDX, 1000baseT-FDX-master, 1000baseT-FDX-flow, 1000baseT-FD >>> X-flow-master, auto, auto-flow >>> awg0: Ethernet address: f2:00:52:68:6d:d8 >>> aw_thermal0: <Allwinner Thermal Sensor Controller> mem 0x1f04000-0x1f043ff >>> on simplebus0 >>> cryptosoft0: <software crypto> >>> Timecounters tick every 10.000 msec >>> usbus0: 480Mbps High Speed USB v2.0 >>> usbus1: 480Mbps High Speed USB v2.0 >>> ugen1.1: <Allwinner> at usbus1 >>> ugen0.1: <Allwinner> at usbus0 >>> uhub0: <Allwinner EHCI root HUB, class 9/0, rev 2.00/1.00, addr 1> on usbus0 >>> uhub1: <Allwinner EHCI root HUB, class 9/0, rev 2.00/1.00, addr 1> on usbus1 >>> mmcsd0: 32GB <SDHC 00000 1.0 SN A1535564 MFG 09/2015 by 27 SM> at mmc0 >>> 50.0MHz/4bit/65535-block >>> a10_mmc1: error rint: 0x00000100 >>> a10_mmc1: error rint: 0x00000100 >>> a10_mmc1: error rint: 0x00000100 >>> a10_mmc1: error rint: 0x00000100 >>> a10_mmc1: error rint: 0x00000100 >>> a10_mmc1: error rint: 0x00000100 >>> a10_mmc1: error rint: 0x00000100 >>> a10_mmc1: error rint: 0x00000100 >>> a10_mmc1: error rint: 0x00008018 >>> a10_mmc1: error rint: 0x00000100 >>> a10_mmc1: error rint: 0x00000100 >>> a10_mmc1: error rint: 0x00000100 >>> a10_mmc1: error rint: 0x00000100 >>> mmcsd1: 8GB <MMCHC 8WPD3R 0.0 SN E7C6641B MFG 01/2000 by 21 0x0000> at mmc1 >>> 50.0MHz/8bit/65535-block >>> Release APs >>> Trying to mount root from ufs:/dev/mmcsd0s2a [rw,noatime]... >>> warning: no time-of-day clock registered, system time will not be set >>> accurately >>> uhub0: 1 port with 1 removable, self powered >>> uhub1: 1 port with 1 removable, self powered >>> ugen0.2: <vendor 0x1a40> at usbus0 >>> uhub2 on uhub0 >>> uhub2: <vendor 0x1a40 USB 2.0 Hub, class 9/0, rev 2.00/1.11, addr 2> on >>> usbus0 >>> uhub2: 4 ports with 4 removable, self powered >>> ugen0.3: <vendor 0x05e3> at usbus0 >>> umass0 on uhub2 >>> umass0: <vendor 0x05e3 USB Storage, class 0/0, rev 2.00/0.16, addr 3> on >>> usbus0 >>> (probe0:umass-sim0:0:0:0): INQUIRY. CDB: 12 00 00 00 24 00 >>> (probe0:umass-sim0:0:0:0): CAM status: CCB request completed with an error >>> (probe0:umass-sim0:0:0:0): Retrying command >>> random: unblocking device. >>> awg0: link state changed to DOWN >>> (probe0:umass-sim0:0:0:0): INQUIRY. CDB: 12 00 00 00 24 00 >>> (probe0:umass-sim0:0:0:0): CAM status: CCB request completed with an error >>> (probe0:umass-sim0:0:0:0): Retrying command >>> awg0: link state changed to UP >>> (probe0:umass-sim0:0:0:0): INQUIRY. CDB: 12 00 00 00 24 00 >>> (probe0:umass-sim0:0:0:0): CAM status: CCB request completed with an error >>> (probe0:umass-sim0:0:0:0): Retrying command >>> (probe0:umass-sim0:0:0:0): INQUIRY. CDB: 12 00 00 00 24 00 >>> (probe0:umass-sim0:0:0:0): CAM status: CCB request completed with an error >>> (probe0:umass-sim0:0:0:0): Retrying command >>> (probe0:umass-sim0:0:0:0): INQUIRY. CDB: 12 00 00 00 24 00 >>> (probe0:umass-sim0:0:0:0): CAM status: CCB request completed with an error >>> (probe0:umass-sim0:0:0:0): Error 5, Retries exhausted >> >> So far the probe0 messages stop after just a few like the above. >> >> Also it looks like the 8GB eMMC (mmc1 / mmcsd1) is likely not supported yet. >> >> I have not yet tried connecting an external usb drive. >> >> Some structure of what was done with the cores shows in the sysctl -a >> output: cpu names 0-3 and 100-103. >> >> (Note: the serial connection tends to drop some text sometimes. That may >> have happened some for the below.) >> >>> root@bananapi-m3:~ # sysctl -a | grep cpu >>> kern.smp.cpus: 4 >>> kern.smp.maxcpus: 4 >>> kern.ccpu: 0 >>> <cpu count="4" mask="f">0, 1, 2, 3</cpu> >>> <cpu count="4" mask="f">0, 1, 2, 3</cpu> >>> kern.sched.cpusetsize: 4 >>> kern.pin_pcpu_swi: 0 >>> kern.vt.splash_cpu_duration: 10 >>> kern.vt.splash_cpu_style: 2 >>> kern.vt.splash_ncpu: 0 >>> kern.vt.splash_cpu: 0 >>> net.inet.tcp.per_cpu_timers: 0 >>> debug.PMAP1changedcpu: 106 >>> debug.cpufreq.verbose: 0 >>> debug.cpufreq.lowest: 0 >>> hw.ncpu: 4 >>> dev.cpu.7.%parent: cpulist0 >>> dev.cpu.7.%pnpinfo: name=cpu@103 compat=arm,cortex-a7 >>> dev.cpu.7.%location: >>> dev.cpu.7.%driver: cpu >>> dev.cpu.7.%desc: Open Firmware CPU >>> dev.cpu.6.%parent: cpulist0 >>> dev.cpu.6.%pnpinfo: name=cpu@102 compat=arm,cortex-a7 >>> dev.cpu.6.%location: >>> dev.cpu.6.%driver: cpu >>> dev.cpu.6.%desc: Open Firmware CPU >>> dev.cpu.5.%parent: cpulist0 >>> dev.cpu.5.%pnpinfo: name=cpu@101 compat=arm,cortex-a7 >>> dev.cpu.5.%location: >>> dev.cpu.5.%dri.5.%desc: Open Firmware CPU >>> dev.cpu.4.%parent: cpulist0 >>> dev.cpu.4.%pnpinfo: name=cpu@100 compat=arm,cortex-a7 >>> dev.cpu.4.%location: >>> dev.cpu.4.%driver: cpu >>> dev.cpu.4.%desc: Open Firmware CPU >>> dev.cpu.3.%parent: cpulist0 >>> dev.cpu.3.%pnpinfo: name=cpu@3 compat=arm,cortex-a7 >>> dev.cpu.3.%location: >>> dev.cpu.3.%driver: cpu >>> dev.cpu.3.%desc: Open Firmware CPU >>> dev.cpu.2.%parent: cpulist0 >>> dev.cpu.2.%pnpinfo: name=cpu@2 compat=arm,cortex-a7 >>> dev.cpu.2.%location: >>> dev.cpu.2.%driver: cpu >>> dev.cpu.2.%desc: Open Firmware CPU >>> dev.cpu.1.%parent: cpulist0 >>> dev.cpu.1.%location: >>> dev.cpu.1.%driver: cpu >>> dev.cpu.1.%desc: Open Firmware CPU >>> dev.cpu.0.%parent: cpulist0 >>> dev.cpu.0.%pnpinfo: name=cpu@0 compat=arm,cortex-a7 >>> dev.cpu.0.%location: >>> dev.cpu.0.%driver: cpu >>> dev.cpu.0.%desc: Open Firmware CPU >>> dev.cpu.0.%parent: cpulist0 >>> dev.cpulist.0.%parent: ofwbus0 >>> dev.cpulist.0.%pnpinfo: name=cpus >>> dev.cpulist.0.%location: >>> dev.cpulist.0.%driver: cpulist >>> dev.cpulist.0.%desc: Open Firmware CPU Group >>> dev.cpulist.%parent: >>> dev.aw_cpusclk.0.%parent: aw_ccu0 >>> dev.aw_cpusclk.0.%pnpinfo: name=clk@01f0140inner,sun8i-a83t-cpus-clk >>> dev.aw_cpusclk.0.%location: >>> dev.aw_cpusclk.0.%driver: aw_cpusclk >>> dev.aw_cpusclk.0.%desc: Allwinner CPUS Clock >>> dev.aw_cpusclk.%parent: >>> security.jail.param.cpuset.id: 0 >> >> >> >> === >> Mark Millard >> markmi at dsl-only.net >> > > -- > Emmanuel Vadot <m...@bidouilliste.com> <m...@freebsd.org> === Mark Millard markmi at dsl-only.net _______________________________________________ freebsd-stable@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"
