11.0-BETA2: PWM on Beagle Bone Black kernel panic?
Benny Goemans
benny.goemans at belgacom.net
Sun Jul 31 11:19:04 UTC 2016
All,
I've tried enabling PWM on a Beagle Bone Black (tried both PWM 1 & 2) by
modifying the DTS. Once I reboot the boot ends with a kernel panic.
Now, I might simply be doing something wrong which is why I haven't
created a bug for this yet. I haven't used PWM with FreeBSD in quite a
long time.
Kernel output is attached below. No other changes were made to the
default BETA2 image, downloaded from
ftp://ftp.freebsd.org/pub/FreeBSD/releases/arm/armv6/ISO-IMAGES/11.0/FreeBSD-11.0-BETA2-arm-armv6-BEAGLEBONE.img.xz).
If anyone needs more information, please ask.
What I added in the default beaglebone-black.dts:
&am33xx_pinmux {
/* other stuff snipped here */
ehrpwm2_pins: pinmux_ehrpwm2_pins {
pinctrl-single,pins = <
AM33XX_IOPAD(0x820, PIN_OUTPUT | MUX_MODE4)
/* gpmc_ad9.ehrpwm2a */
AM33XX_IOPAD(0x824, PIN_OUTPUT | MUX_MODE4)
/* gpmc_ad8.ehrpwm2b */
>;
};
}
/* other stuff snipped */
&ehrpwm2 {
status = "okay";
pinctrl-names = "default";
pinctrl-0 = <&ehrpwm2_pins>;
};
Recompiled with 'make builddtb' and then copied to /boot/dtb
Kind regards,
Benny Goemans
Full output from serial console:
U-Boot SPL 2014.10 (Jul 22 2016 - 09:57:50)
MMC: block number 0x100 exceeds max(0x0)
MMC: block number 0x200 exceeds max(0x0)
*** Error - No Valid Environment Area found
Using default environment
reading u-boot.img
reading u-boot.img
U-Boot 2014.10 (Jul 22 2016 - 09:57:50)
Watchdog enabled
I2C: ready
DRAM: 512 MiB
MMC: OMAP SD/MMC: 0, OMAP SD/MMC: 1
reading u-boot.env
** Unable to read "u-boot.env" from mmc0:1 **
Using default environment
Net: <ethaddr> not set. Validating first E-fuse MAC
cpsw, usb_ether
reading uEnv.txt
** Unable to read file uEnv.txt **
Hit any key to stop autoboot: 0
Booting from: mmc 0 ubldr
reading ubldr
271821 bytes read in 31 ms (8.4 MiB/s)
## Starting application at 0x88000098 ...
Consoles: U-Boot console
Compatible U-Boot API signature found @0x9e731510
FreeBSD/armv6 U-Boot loader, Revision 1.2
(root at releng2.nyi.freebsd.org, Fri Jul 22 10:12:56 UTC 2016)
DRAM: 512MB
Number of U-Boot devices: 3
U-Boot env: loaderdev='mmc 0'
Found U-Boot device: disk
Checking unit=0 slice=<auto> partition=<auto>... good.
Booting from disk0s2a:
/boot/kernel/kernel data=0x6cbfe4+0xc401c syms=[0x4+0x7e0f0+0x4+0x9120e]
Hit [Enter] to boot immediately, or any other key for command prompt.
Booting [/boot/kernel/kernel]...
/boot/dtb/beaglebone-black.dtb size=0x8566
Loaded DTB from file 'beaglebone-black.dtb'.
Kernel entry at 0x0x88200100...
Kernel args: (null)
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-BETA2 #0 r303168: Fri Jul 22 10:19:10 UTC 2016
root at releng2.nyi.freebsd.org:/usr/obj/arm.armv6/usr/src/sys/BEAGLEBONE
arm
FreeBSD clang version 3.8.0 (tags/RELEASE_380/final 262564) (based on
LLVM 3.8.0
)
VT: init without driver.
CPU: Cortex A8-r3 rev 2 (Cortex-A core)
Supported features: ARM_ISA THUMB2 JAZELLE THUMBEE ARMv4 Security_Ext
WB enabled LABT branch prediction disabled
LoUU:2 LoC:3 LoUIS:1
Cache level 1:
32KB/64B 4-way data cache WT WB Read-Alloc
32KB/64B 4-way instruction cache Read-Alloc
Cache level 2:
256KB/64B 8-way unified cache WT WB Read-Alloc Write-Alloc
real memory = 536870912 (512 MB)
avail memory = 514383872 (490 MB)
Texas Instruments AM335x Processor, Revision ES1.2
random: entropy device external interface
kbd0 at kbdmux0
ofwbus0: <Open Firmware Device Tree>
simplebus0: <Flattened device tree simple bus> on ofwbus0
simplebus1: <Flattened device tree simple bus> on simplebus0
simplebus2: <Flattened device tree simple bus> mem 0x210000-0x211fff on
simplebu
s1
ti_scm0: <TI Control Module> mem 0-0x7ff on simplebus2
aintc0: <TI AINTC Interrupt Controller> mem 0x48200000-0x48200fff on
simplebus0
aintc0: Revision 5.0
cpulist0: <Open Firmware CPU Group> on ofwbus0
cpu0: <Open Firmware CPU> on cpulist0
pmu0: <Performance Monitoring Unit> on ofwbus0
am335x_prcm0: <AM335x Power and Clock Management> mem 0x200000-0x203fff
on simpl
ebus1
am335x_prcm0: Clocks: System 24.0 MHz, CPU 1000 MHz
ti_pinmux0: <TI Pinmux Module> mem 0x800-0xa37 on simplebus2
gpio0: <TI AM335x General Purpose I/O (GPIO)> mem 0x44e07000-0x44e07fff
on simpl
ebus0
gpiobus0: <OFW GPIO bus> on gpio0
gpioc0: <GPIO controller> on gpio0
gpio1: <TI AM335x General Purpose I/O (GPIO)> mem 0x4804c000-0x4804cfff
on simpl
ebus0
gpiobus1: <OFW GPIO bus> on gpio1
gpioled0: <GPIO led> at pin 21 on gpiobus1
gpioled1: <GPIO led> at pin 22 on gpiobus1
gpioled2: <GPIO led> at pin 23 on gpiobus1
gpioled3: <GPIO led> at pin 24 on gpiobus1
gpioc1: <GPIO controller> on gpio1
gpio2: <TI AM335x General Purpose I/O (GPIO)> mem 0x481ac000-0x481acfff
on simpl
ebus0
gpiobus2: <OFW GPIO bus> on gpio2
gpioc2: <GPIO controller> on gpio2
gpio3: <TI AM335x General Purpose I/O (GPIO)> mem 0x481ae000-0x481aefff
on simpl
ebus0
gpiobus3: <OFW GPIO bus> on gpio3
gpioc3: <GPIO controller> on gpio3
uart0: <TI UART (16550 compatible)> mem 0x44e09000-0x44e0afff on
simplebus0
uart0: console (115384,n,8,1)
iichb0: <TI I2C Controller> mem 0x44e0b000-0x44e0bfff on simplebus0
iichb0: I2C revision 4.0 FIFO size: 32 bytes
iicbus0: <OFW I2C bus> on iichb0
iic0: <I2C generic I/O> on iicbus0
am335x_pmic0: <TI TPS65217 Power Management IC> at addr 0x48 on iicbus0
iicbus0: <unknown card> at addr 0xa0
tda0 at addr 0xe0 on iicbus0
tda1 at addr 0xe0 on iicbus0
iichb1: <TI I2C Controller> mem 0x4802a000-0x4802afff on simplebus0
iichb1: I2C revision 4.0 FIFO size: 32 bytes
iicbus1: <OFW I2C bus> on iichb1
iic1: <I2C generic I/O> on iicbus1
iichb2: <TI I2C Controller> mem 0x4819c000-0x4819cfff on simplebus0
iichb2: I2C revision 4.0 FIFO size: 32 bytes
iicbus2: <OFW I2C bus> on iichb2
iic2: <I2C generic I/O> on iicbus2
iicbus2: <unknown card> at addr 0xa8
iicbus2: <unknown card> at addr 0xaa
iicbus2: <unknown card> at addr 0xac
iicbus2: <unknown card> at addr 0xae
sdhci_ti0: <TI MMCHS (SDHCI 2.0)> mem 0x48060000-0x48060fff on
simplebus0
mmc0: <MMC/SD bus> on sdhci_ti0
sdhci_ti1: <TI MMCHS (SDHCI 2.0)> mem 0x481d8000-0x481d8fff on
simplebus0
mmc1: <MMC/SD bus> on sdhci_ti1
ti_wdt0: <TI Watchdog Timer> mem 0x44e35000-0x44e35fff on simplebus0
ti_mbox0: <TI System Mailbox> mem 0x480c8000-0x480c81ff on simplebus0
ti_mbox0: revision 4.0
am335x_dmtimer0: <AM335x DMTimer2> mem 0x48040000-0x480403ff on
simplebus0
Event timer "DMTimer2" frequency 24000000 Hz quality 500
am335x_dmtimer1: <AM335x DMTimer3> mem 0x48042000-0x480423ff on
simplebus0
Timecounter "DMTimer3" frequency 24000000 Hz quality 500
am335x_rtc0: <AM335x RTC (power management mode)> mem
0x44e3e000-0x44e3efff on simplebus0
am335x_rtc0: AM335X RTC v1.0.6
spi0: <TI McSPI controller> mem 0x481a0000-0x481a03ff on simplebus0
spi0: scheme: 0x1 func: 0x30 rtl: 1 rev: 2.11 custom rev: 0
spibus0: <OFW SPI bus> on spi0
usbss0: <TI AM33xx integrated USB OTG controller> mem
0x47400000-0x47400fff on simplebus0
usbss0: TI AM335X USBSS v0.0.13
musbotg0: <TI AM33xx integrated USB OTG controller> mem
0x47401400-0x474017ff,0x47401000-0x474011ff on usbss0
usbus0: Dynamic FIFO sizing detected, assuming 16Kbytes of FIFO RAM
usbus0 on musbotg0
musbotg1: <TI AM33xx integrated USB OTG controller> mem
0x47401c00-0x47401fff,0x47401800-0x474019ff on usbss0
usbus1: Dynamic FIFO sizing detected, assuming 16Kbytes of FIFO RAM
usbus1 on musbotg1
am335x_pwmss0: <AM335x PWM> mem 0x48304000-0x4830400f on simplebus0
am335x_ehrpwm0: <AM335x EHRPWM> mem 0x48304200-0x4830427f on
am335x_pwmss0
cpswss0: <3-port Switch Ethernet Subsystem> mem
0x4a100000-0x4a1007ff,0x4a101200-0x4a1012ff on simplebus0
cpswss0: CPSW SS Version 1.12 (0)
cpswss0: Initial queue size TX=128 RX=384
cpsw0: <Ethernet Switch Port> on cpswss0
miibus0: <MII bus> on cpsw0
smscphy0: <SMC LAN8710A 10/100 interface> PHY 0 on miibus0
smscphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
cpsw0: Ethernet address: 1c:ba:8c:a8:8c:1c
fb0: <AM335x LCD controller> mem 0x4830e000-0x4830efff on simplebus0
ti_adc0: <TI ADC controller> mem 0x44e0d000-0x44e0dfff disabled on
simplebus0
ti_adc0: scheme: 0x1 func: 0x730 rtl: 0 rev: 0.1 custom rev: 0
ti_pruss0: <TI Programmable Realtime Unit Subsystem> mem
0x4a300000-0x4a37ffff on simplebus0
ti_pruss0: AM33xx PRU-ICSS
cryptosoft0: <software crypto>
Timecounters tick every 10.000 msec
usbus0: 480Mbps High Speed USB v2.0
usbus1: 480Mbps High Speed USB v2.0
am335x_pmic0: TPS65217C ver 1.2 powered by AC
tda0: TDA19988
ugen0.1: <Mentor Graphics> at usbus0
uhub0: <Mentor Graphics OTG Root HUB, class 9/0, rev 2.00/1.00, addr 1>
on usbus0
ugen1.1: <Mentor Graphics> at usbus1
uhub1: <Mentor Graphics OTG Root HUB, class 9/0, rev 2.00/1.00, addr 1>
on usbus1
uhub0: 1 port with 1 removable, self powered
uhub1: 1 port with 1 removable, self powered
tda0: failed to read EDID
tda1: TDA19988
tda1: failed to read EDID
mmcsd0: 8GB <SDHC SU08G 8.0 SN 0E8E8105 MFG 04/2011 by 3 SD> at mmc0
24.0MHz/4bit/65535-block
mmcsd1: 2GB <MMC MMC02G 4.2 SN DE6390C6 MFG 02/1998 by 254 0x004e> at
mmc1 48.0MHz/8bit/65535-block
Trying to mount root from ufs:/dev/ufs/rootfs [rw]...
WARNING: / was not properly dismounted
warning: no time-of-day clock registered, system time will not be set
accurately
Setting hostuuid: 1662bbe9-4ff6-11e6-8cda-1cba8ca88c1c.
Setting hostid: 0x4d53055b.
Starting file system checks:
/dev/ufs/rootfs: 32999 files, 283298 used, 1594709 free (325 frags,
199298 blocks, 0.0% fragmentation)
Mounting local filesystems:.
ELF ldconfig path: /lib /usr/lib /usr/lib/compat /usr/local/lib
/usr/local/lib/perl5/5.20/mach/CORE
random: unblocking device.
Soft Float compatibility ldconfig path:
Setting hostname: beaglebone.
Setting up harvesting:
[UMA],[FS_ATIME],SWI,INTERRUPT,NET_NG,NET_ETHER,NET_TUN,MOUSE,KEYBOARD,ATTACH,CACHED
Feeding entropy: .
cpsw0: link state changed to DOWN
cpsw0: link state changed to UP
Starting Network: lo0 cpsw0.
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
options=600003<RXCSUM,TXCSUM,RXCSUM_IPV6,TXCSUM_IPV6>
inet6 ::1 prefixlen 128
inet6 fe80::1%lo0 prefixlen 64 scopeid 0x2
inet 127.0.0.1 netmask 0xff000000
groups: lo
nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
cpsw0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu
1500
options=8000b<RXCSUM,TXCSUM,VLAN_MTU,LINKSTATE>
ether 1c:ba:8c:a8:8c:1c
media: Ethernet autoselect (100baseTX <full-duplex>)
status: active
nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
Starting devd.
Fatal kernel mode data abort: 'Translation Fault (L2)' on read
trapframe: 0xde3bdc48
FSR=00000007, FAR=00000000, spsr=20000013
r0 =00000001, r1 =00000000, r2 =00000001, r3 =c2c7d6e0
r4 =de3bddb8, r5 =c29e5cc0, r6 =00000001, r7 =c0960424
r8 =00000000, r9 =c2c7d6e0, r10=de3bddb8, r11=de3bdcf8
r12=fefefeff, ssp=de3bdcd8, slr=00008080, pc =c04f8b74
panic: Fatal abort
Uptime: 17s
Automatic reboot in 15 seconds - press a key on the console to abort
--> Press a key on the console to reboot,
--> or switch off the system now.
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