Quick start
Download Buildroot sources
Depends on your needs you can:
- download stable release from https://buildroot.org/downloads/,
- clone latest from https://git.buildroot.net/buildroot repository.
We recommends to use always the latest stable release.
Below we will use stable release 2018.11.1.
wget https://buildroot.org/downloads/buildroot-2018.11.1.tar.gz tar xf buildroot-2018.11.1.tar.gz cd buildroot-2018.11.1
Configure buildroot
Apply configuration from grinn_chiliboard_defconfig file.
make grinn_chiliboard_defconfig
Build firmware
make all
During the first build Buildroot will download and compile cross-compiler for chiliSOM. This operation will take several minutes (around 30 minutes @ 8 x Intel® Core™ i7-2760QM CPU).
But after first build cross-compiler will be reused and build time will be reduced to the minimal value (in most cases it will take less than 1 minute).
Install firmware on SD card
sudo dd if=output/images/sdcard.img of=/dev/<SD card> bs=4M sync
Where <SD card> points to your SD card device.
Some distributions are automatically mounting all hot-plugged disks. In such situation please unmount SD card before
dd … command.Make certain that
of=… points to your SD card. In case of mistake (when of=… points to your system disk) you can damage data on your system disk.
Method 1
Insert SD cart to PC and check last lines from dmesg command output. Name assigned to the detected SD card will be presented as in the following example.
[ 6163.014768] mmc0: new high speed SDHC card at address 1234 [ 6163.024433] mmcblk0: mmc0:1234 SA16G 14.6 GiB [ 6163.025749] mmcblk0: p1 [ 6163.375207] EXT4-fs (mmcblk0p1): mounted filesystem with ordered data mode. Opts: (null)
Method 2
lsblk command will list all detected block devices where your SD card will be displayed.
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 238.5G 0 disk ├─sda1 8:1 0 28G 0 part / ├─sda2 8:2 0 1K 0 part ├─sda5 8:5 0 9.3G 0 part └─sda6 8:6 0 201.2G 0 part /home sr0 11:0 1 1024M 0 rom mmcblk0 179:0 0 14.7G 0 disk └─mmcblk0p1 179:1 0 14.7G 0 part /media/foo/804b0b54-f37e-49cb-9299-87759d7b68d4
Device name
In both examples SD card was detected as mmcblk0 so valid dd … command syntax is
sudo dd if=output/images/sdcard.img of=/dev/mmcblk0 bs=4M
Run firmware on chiliSOM
Insert programmed SD card to the chiliboard card socket.
Configure boot switches as presented below.
| BOOT0 | BOOT1 | BOOT2 | BOOT3 | BOOT4 | BOOT5 |
|---|---|---|---|---|---|
| ON | ON | ON | |||
| OFF | OFF | OFF | |||
| 1 | 2 | 3 | 4 | 5 | 6 |
Connect your chiliboard to your PC via USB ↔ micro USB cable.
chiliboard will be automatically powered-up and on debug console you should see starting Linux, as presented below.
U-Boot SPL 2019.01 (Jan 17 2019 - 21:15:07 +0100) Trying to boot from MMC1 U-Boot 2019.01 (Jan 17 2019 - 21:15:07 +0100) CPU : AM335X-GP rev 2.1 I2C: ready DRAM: 512 MiB NAND: 256 MiB MMC: OMAP SD/MMC: 0, OMAP SD/MMC: 1 <ethaddr> not set. Validating first E-fuse MAC Net: Net Initialization Skipped No ethernet found. Hit any key to stop autoboot: 0 switch to partitions #0, OK mmc0 is current device SD/MMC found on device 0 5354504 bytes read in 335 ms (15.2 MiB/s) 32924 bytes read in 4 ms (7.8 MiB/s) ## Flattened Device Tree blob at 87800000 Booting using the fdt blob at 0x87800000 Loading Device Tree to 9df7b000, end 9df8609b ... OK Starting kernel ... [ 0.000000] Booting Linux on physical CPU 0x0 [ 0.000000] Linux version 4.9.66 (mucka@winston) (gcc version 7.3.0 (Buildroot 2018.11.1-g570495e-dirty) ) #1 SMP Thu Jan 17 18:18:09 [ 0.000000] CPU: ARMv7 Processor [413fc082] revision 2 (ARMv7), cr=10c5387d [ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache [ 0.000000] OF: fdt:Machine model: Grinn chiliboard with serials: RS232, RS485, CAN [ 0.000000] cma: Reserved 16 MiB at 0x9e800000 [ 0.000000] Memory policy: Data cache writeback [ 0.000000] CPU: All CPU(s) started in SVC mode. [ 0.000000] AM335X ES2.1 (sgx neon) [ 0.000000] percpu: Embedded 15 pages/cpu @df942000 s31592 r8192 d21656 u61440 [ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 129412 [ 0.000000] Kernel command line: console=ttyO0,115200n8,115200 root=/dev/mmcblk0p2 rootwait rw [ 0.000000] PID hash table entries: 2048 (order: 1, 8192 bytes) [ 0.000000] Dentry cache hash table entries: 65536 (order: 6, 262144 bytes) [ 0.000000] Inode-cache hash table entries: 32768 (order: 5, 131072 bytes) [ 0.000000] Memory: 480376K/522240K available (7168K kernel code, 779K rwdata, 2396K rodata, 1024K init, 8137K bss, 25480K reserved,) [ 0.000000] Virtual kernel memory layout: [ 0.000000] vector : 0xffff0000 - 0xffff1000 ( 4 kB) [ 0.000000] fixmap : 0xffc00000 - 0xfff00000 (3072 kB) [ 0.000000] vmalloc : 0xe0000000 - 0xff800000 ( 504 MB) [ 0.000000] lowmem : 0xc0000000 - 0xdfe00000 ( 510 MB) [ 0.000000] pkmap : 0xbfe00000 - 0xc0000000 ( 2 MB) [ 0.000000] modules : 0xbf000000 - 0xbfe00000 ( 14 MB) [ 0.000000] .text : 0xc0008000 - 0xc0800000 (8160 kB) [ 0.000000] .init : 0xc0b00000 - 0xc0c00000 (1024 kB) [ 0.000000] .data : 0xc0c00000 - 0xc0cc2e14 ( 780 kB) [ 0.000000] .bss : 0xc0cc4000 - 0xc14b65a0 (8138 kB) [ 0.000000] Running RCU self tests [ 0.000000] Hierarchical RCU implementation. [ 0.000000] RCU lockdep checking is enabled. [ 0.000000] Build-time adjustment of leaf fanout to 32. [ 0.000000] RCU restricting CPUs from NR_CPUS=2 to nr_cpu_ids=1. [ 0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=32, nr_cpu_ids=1 [ 0.000000] NR_IRQS:16 nr_irqs:16 16 [ 0.000000] IRQ: Found an INTC at 0xfa200000 (revision 5.0) with 128 interrupts [ 0.000000] OMAP clockevent source: timer2 at 24000000 Hz [ 0.000014] sched_clock: 32 bits at 24MHz, resolution 41ns, wraps every 89478484971ns [ 0.000038] clocksource: timer1: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 79635851949 ns [ 0.000079] OMAP clocksource: timer1 at 24000000 Hz [ 0.000512] clocksource_probe: no matching clocksources found [ 0.001402] Console: colour dummy device 80x30 [ 0.001459] Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar [ 0.001468] ... MAX_LOCKDEP_SUBCLASSES: 8 [ 0.001476] ... MAX_LOCK_DEPTH: 48 [ 0.001484] ... MAX_LOCKDEP_KEYS: 8191 [ 0.001491] ... CLASSHASH_SIZE: 4096 [ 0.001499] ... MAX_LOCKDEP_ENTRIES: 32768 [ 0.001507] ... MAX_LOCKDEP_CHAINS: 65536 [ 0.001514] ... CHAINHASH_SIZE: 32768 [ 0.001522] memory used by lock dependency info: 5167 kB [ 0.001530] per task-struct memory footprint: 1536 bytes [ 0.001563] Calibrating delay loop... 996.14 BogoMIPS (lpj=4980736) [ 0.078839] pid_max: default: 32768 minimum: 301 [ 0.079314] Security Framework initialized [ 0.079458] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes) [ 0.079471] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes) [ 0.082912] CPU: Testing write buffer coherency: ok [ 0.084392] CPU0: thread -1, cpu 0, socket -1, mpidr 0 [ 0.084463] Setting up static identity map for 0x80100000 - 0x80100070 [ 0.088672] Brought up 1 CPUs [ 0.088696] SMP: Total of 1 processors activated (996.14 BogoMIPS). [ 0.088706] CPU: All CPU(s) started in SVC mode. [ 0.092699] devtmpfs: initialized [ 0.127583] VFP support v0.3: implementor 41 architecture 3 part 30 variant c rev 3 [ 0.128471] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns [ 0.128533] futex hash table entries: 256 (order: 2, 16384 bytes) [ 0.130321] pinctrl core: initialized pinctrl subsystem [ 0.135027] NET: Registered protocol family 16 [ 0.140991] DMA: preallocated 256 KiB pool for atomic coherent allocations [ 0.183437] omap_hwmod: debugss: _wait_target_disable failed [ 0.239571] cpuidle: using governor menu [ 0.256739] OMAP GPIO hardware version 0.1 [ 0.293303] omap-gpmc 50000000.gpmc: could not find pctldev for node /ocp/l4_wkup@44c00000/scm@210000/pinmux@800/nandflash_pins, defe [ 0.296429] No ATAGs? [ 0.296453] hw-breakpoint: debug architecture 0x4 unsupported. [ 0.296654] omap4_sram_init:Unable to allocate sram needed to handle errata I688 [ 0.296670] omap4_sram_init:Unable to get sram pool needed to handle errata I688 [ 0.342166] edma 49000000.edma: TI EDMA DMA engine driver [ 0.345753] SCSI subsystem initialized [ 0.347356] omap_i2c 44e0b000.i2c: could not find pctldev for node /ocp/l4_wkup@44c00000/scm@210000/pinmux@800/pinmux_i2c0_pins, defe [ 0.347633] pps_core: LinuxPPS API ver. 1 registered [ 0.347644] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it> [ 0.347693] PTP clock support registered [ 0.352141] clocksource: Switched to clocksource timer1 [ 0.453274] VFS: Disk quotas dquot_6.6.0 [ 0.453459] VFS: Dquot-cache hash table entries: 1024 (order 0, 4096 bytes) [ 0.484182] NET: Registered protocol family 2 [ 0.486104] TCP established hash table entries: 4096 (order: 2, 16384 bytes) [ 0.486202] TCP bind hash table entries: 4096 (order: 5, 147456 bytes) [ 0.487365] TCP: Hash tables configured (established 4096 bind 4096) [ 0.487542] UDP hash table entries: 256 (order: 2, 20480 bytes) [ 0.487711] UDP-Lite hash table entries: 256 (order: 2, 20480 bytes) [ 0.488533] NET: Registered protocol family 1 [ 0.490605] RPC: Registered named UNIX socket transport module. [ 0.490629] RPC: Registered udp transport module. [ 0.490639] RPC: Registered tcp transport module. [ 0.490649] RPC: Registered tcp NFSv4.1 backchannel transport module. [ 0.493911] hw perfevents: enabled with armv7_cortex_a8 PMU driver, 5 counters available [ 0.498160] audit: initializing netlink subsys (disabled) [ 0.498391] audit: type=2000 audit(0.490:1): initialized [ 0.502259] workingset: timestamp_bits=14 max_order=17 bucket_order=3 [ 0.505335] NFS: Registering the id_resolver key type [ 0.505671] Key type id_resolver registered [ 0.505686] Key type id_legacy registered [ 0.505835] jffs2: version 2.2. (NAND) (SUMMARY) �© 2001-2006 Red Hat, Inc. [ 0.510952] io scheduler noop registered [ 0.510978] io scheduler deadline registered [ 0.511095] io scheduler cfq registered (default) [ 0.513119] pinctrl-single 44e10800.pinmux: 142 pins at pa f9e10800 size 568 [ 0.516547] Serial: 8250/16550 driver, 6 ports, IRQ sharing enabled [ 0.524487] omap_uart 44e09000.serial: no wakeirq for uart0 [ 0.525025] 44e09000.serial: ttyO0 at MMIO 0x44e09000 (irq = 158, base_baud = 3000000) is a OMAP UART0 [ 1.218875] console [ttyO0] enabled [ 1.224401] omap_uart 48022000.serial: no wakeirq for uart1 [ 1.230675] 48022000.serial: ttyO1 at MMIO 0x48022000 (irq = 159, base_baud = 3000000) is a OMAP UART1 [ 1.241938] omap_uart 481a8000.serial: no wakeirq for uart4 [ 1.248167] 481a8000.serial: ttyO4 at MMIO 0x481a8000 (irq = 160, base_baud = 3000000) is a OMAP UART4 [ 1.296991] brd: module loaded [ 1.323946] loop: module loaded [ 1.329577] mtdoops: mtd device (mtddev=name/number) must be supplied [ 1.339431] libphy: Fixed MDIO Bus: probed [ 1.344319] vcan: Virtual CAN interface driver [ 1.348964] CAN device driver interface [ 1.355927] c_can_platform 481cc000.can: c_can_platform device registered (regs=fa1cc000, irq=164) [ 1.442173] davinci_mdio 4a101000.mdio: davinci mdio revision 1.6 [ 1.448559] davinci_mdio 4a101000.mdio: detected phy mask fffffffe [ 1.458933] libphy: 4a101000.mdio: probed [ 1.463310] davinci_mdio 4a101000.mdio: phy[0]: device 4a101000.mdio:00, driver SMSC LAN8710/LAN8720 [ 1.474229] cpsw 4a100000.ethernet: Detected MACID = 84:eb:18:e1:f2:ab [ 1.487278] mousedev: PS/2 mouse device common for all mice [ 1.493245] i2c /dev entries driver [ 1.499385] omap_hsmmc 48060000.mmc: Got CD GPIO [ 1.507086] ledtrig-cpu: registered to indicate activity on CPUs [ 1.514459] oprofile: using arm/armv7 [ 1.519002] Initializing XFRM netlink socket [ 1.523960] NET: Registered protocol family 10 [ 1.531781] sit: IPv6, IPv4 and MPLS over IPv4 tunneling driver [ 1.540536] NET: Registered protocol family 17 [ 1.545392] NET: Registered protocol family 15 [ 1.550038] can: controller area network core (rev 20120528 abi 9) [ 1.556680] NET: Registered protocol family 29 [ 1.561358] can: raw protocol (rev 20120528) [ 1.565987] can: broadcast manager protocol (rev 20161123 t) [ 1.571938] can: netlink gateway (rev 20130117) max_hops=1 [ 1.578165] Key type dns_resolver registered [ 1.582853] omap_voltage_late_init: Voltage driver support not added [ 1.589504] sr_dev_init: No voltage domain specified for smartreflex0. Cannot initialize [ 1.597993] sr_dev_init: No voltage domain specified for smartreflex1. Cannot initialize [ 1.607151] ThumbEE CPU extension supported. [ 1.611653] Registering SWP/SWPB emulation handler [ 1.616731] SmartReflex Class3 initialized [ 1.641847] omap-gpmc 50000000.gpmc: GPMC revision 6.0 [ 1.647627] gpmc_mem_init: disabling cs 0 mapped at 0x0-0x1000000 [ 1.658439] nand: device found, Manufacturer ID: 0x2c, Chip ID: 0xda [ 1.665247] nand: Micron MT29F2G08ABAEAH4 [ 1.669441] nand: 256 MiB, SLC, erase size: 128 KiB, page size: 2048, OOB size: 64 [ 1.677448] nand: using OMAP_ECC_BCH8_CODE_HW ECC scheme [ 1.736150] random: fast init done [ 1.745222] tps65217 0-0024: TPS65217 ID 0xe version 1.2 [ 1.750927] omap_i2c 44e0b000.i2c: bus 0 rev0.11 at 400 kHz [ 1.757985] omap_hsmmc 48060000.mmc: Got CD GPIO [ 1.825143] hctosys: unable to open rtc device (rtc0) [ 1.830431] sr_init: No PMIC hook to init smartreflex [ 1.836067] sr_init: platform driver register failed for SR [ 1.849095] Waiting for root device /dev/mmcblk0p2... [ 1.890008] mmc0: host does not support reading read-only switch, assuming write-enable [ 1.900530] mmc0: new high speed SDHC card at address 1234 [ 1.909812] mmcblk0: mmc0:1234 SA08G 7.21 GiB [ 1.918963] mmcblk0: p1 p2 [ 1.975858] EXT4-fs (mmcblk0p2): couldn't mount as ext3 due to feature incompatibilities [ 2.301414] EXT4-fs (mmcblk0p2): recovery complete [ 2.312371] EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode. Opts: (null) [ 2.321020] VFS: Mounted root (ext4 filesystem) on device 179:2. [ 2.330058] devtmpfs: mounted [ 2.335311] Freeing unused kernel memory: 1024K [ 2.446166] EXT4-fs (mmcblk0p2): re-mounted. Opts: data=ordered Starting logging: OK Initializing random number generator... done. Starting network: [ 2.890135] net eth0: initializing cpsw version 1.12 (0) [ 2.992785] SMSC LAN8710/LAN8720 4a101000.mdio:00: attached PHY driver [SMSC LAN8710/LAN8720] (mii_bus:phy_addr=4a101000.mdio:00, ir) [ 3.015661] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready udhcpc: started, v1.29.3 udhcpc: sending discover udhcpc: sending discover udhcpc: sending discover udhcpc: no lease, failing [ 12.196832] c_can_platform 481cc000.can can0: setting BTR=1c0b BRPE=0000 FAIL Welcome to Buildroot buildroot login:
With default configuration you can log as a root (no password needed) and start to use your chiliboard.