AM335x Beaglebone Black eMMC烧写记录

使用的所有的镜像都是帖子里提供的镜像咯

看看串口打印信息都有什么输出？

只有一句这个：
U-Boot SPL 2013.01.01 (Sep 01 2016 - 00:31:54)

从打印来看，像是SPL已经启动了，但是烧写uboot失败了，莫非DDR初始化失败？

我的电脑是64位的，没找到uniflash的64位安装包，就安装了这个uniflash_3.4.1.00012_win32，不知道有没有影响。

可以在虚拟机里搞的。

U-Boot SPL 2013.01.01 (Sep 01 2016 - 00:31:54)
Using default environment

ERROR: Environment import failed: errno = 12

at env_common.c:141/set_default_env()
## Can't malloc 4 bytes
后来输出这个了。。

你是在哪个板子上测的？感觉DDR都没有正常运行。

重新试了一次，又这样了。。。
循环出现下面的东西

U-Boot SPL 2013.01.01 (Mar 14 2017 - 10:22:07)
mu***-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, bulk combine, bulk split, HB-ISO Rx, HB-ISO Tx, SoftConn)
mu***-hdrc: MHDRC RTL version 2.0
mu***-hdrc: setup fifo_mode 4
mu***-hdrc: 28/31 max ep, 16384/16384 memory
USB Peripheral mode controller at 47401000 using PIO, IRQ 0
Using default environment
u***_ether
using mu***-hdrc, OUT ep1out IN ep1in STATUS ep2in
MAC 04:a3:16:ad:49:e2
HOST MAC de:ad:be:af:00:00
RNDIS ready
mu***-hdrc: peripheral reset irq lost!
high speed config #2: 2 mA, Ethernet Gadget, using RNDIS
USB RNDIS network up!
BOOTP broadcast 1
BOOTP broadcast 2
BOOTP broadcast 3
BOOTP broadcast 4
BOOTP broadcast 5
BOOTP broadcast 6
BOOTP broadcast 7
BOOTP broadcast 8
BOOTP broadcast 9
BOOTP broadcast 10
Retry count exceeded; starting again
using mu***-hdrc, OUT ep1out IN ep1in STATUS ep2in
MAC 04:a3:16:ad:49:e2
HOST MAC de:ad:be:af:00:00
RNDIS ready
high speed config #2: 2 mA, Ethernet Gadget, using RNDIS
USB RNDIS network up!
BOOTP broadcast 1
BOOTP broadcast 2
BOOTP broadcast 3
BOOTP broadcast 4
BOOTP broadcast 5
BOOTP broadcast 6
BOOTP broadcast 7
BOOTP broadcast 8
BOOTP broadcast 9
BOOTP broadcast 10
Retry count exceeded; starting again
using mu***-hdrc, OUT ep1out IN ep1in STATUS ep2in
MAC 04:a3:16:ad:49:e2
HOST MAC de:ad:be:af:00:00
RNDIS ready
high speed config #2: 2 mA, Ethernet Gadget, using RNDIS
USB RNDIS network up!
BOOTP broadcast 1
BOOTP broadcast 2
BOOTP broadcast 3
BOOTP broadcast 4
BOOTP broadcast 5
BOOTP broadcast 6

patch都打上了么？另外有按照文档安装PC上的驱动了么？

 我们基于BBB做了一版自己的板子，主要修改：去掉32k时钟，去掉eeprom，MMC不使用MMC1，只使用MMC0。MMC0对接eMMC（支持4.41协议），只使用4根数据线（0~3，IO与BBB相同），板子启动顺序是MMC、串口、u***。裸板时，通过tftp加载uboot后，通过串口向uboot发送mmcinfo指令，串口log如下：
示波器显示指令发送了，但没有回应。
U-Boot# mmcinfo
mmc_send_cmd : timeout: No status update
Card did not respond to voltage select!
Device: OMAP SD/MMC
Manufacturer ID: 0
OEM: 0
Name: Tran Speed: 0
Rd Block Len: 0
MMC version 0.0
High Capacity: No
Capacity: 0 Bytes
Bus Width: 1-bit
U-Boot#
求助：uboot里，eeprom里的内容从BBB导出来后打桩，mmc驱动并没有修改。这样有什么遗漏吗？跟eMMC无法通信可能有什么原因呢？

急，在线等！

根据你提供的log信息，硬件就没有识别出eMMC。

烧写程序起来之后kernel报panic，帮看下是什么愿意呢？
U-Boot SPL 2013.01.01 (Apr 10 2017 - 16:24:15)
[DEBUG]printf
[DEBUG] right
[DEBUG]:i2c_probe ok %d
mu***-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, bulk combine, bulk split, HB-ISO Rx, HB-ISO Tx, SoftConn)
mu***-hdrc: MHDRC RTL version 2.0
mu***-hdrc: setup fifo_mode 4
mu***-hdrc: 28/31 max ep, 16384/16384 memory
USB Peripheral mode controller at 47401000 using PIO, IRQ 0
Using default environment

u***_ether
using mu***-hdrc, OUT ep1out IN ep1in STATUS ep2in
MAC 78:a5:04:af:56:ed
HOST MAC de:ad:be:af:00:00
RNDIS ready
mu***-hdrc: peripheral reset irq lost!
high speed config #2: 2 mA, Ethernet Gadget, using RNDIS
USB RNDIS network up!
BOOTP broadcast 1
BOOTP broadcast 2
BOOTP broadcast 3
BOOTP broadcast 4
BOOTP broadcast 5
BOOTP broadcast 6
BOOTP broadcast 7
BOOTP broadcast 8
BOOTP broadcast 9
BOOTP broadcast 10

Retry count exceeded; starting again
using mu***-hdrc, OUT ep1out IN ep1in STATUS ep2in
MAC 78:a5:04:af:56:ed
HOST MAC de:ad:be:af:00:00
RNDIS ready
high speed config #2: 2 mA, Ethernet Gadget, using RNDIS
USB RNDIS network up!
BOOTP broadcast 1
Using u***_ether device
TFTP from server 192.168.100.1; our IP address is 192.168.100.19
Filename 'u-boot-restore.img'.
Load address: 0x807fffc0
Loading: #########################
806.6 KiB/s
done
Bytes transferred = 365920 (59560 hex)


U-Boot 2013.01.01 (Apr 10 2017 - 16:24:15)

I2C: ready
DRAM: 512 MiB
WARNING: Caches not enabled
NAND: No NAND device found!!!
0 MiB
MMC: [DEBUG]mmc_initialize
[DEBUG]FUNC __def_mmc_init, LINE 1300
[DEBUG]LINE 545, dev 0, host_caps_mask 0, f_max 0
[DEBUG]LINE 545, dev 1, host_caps_mask 0, f_max 0
OMAP SD/MMC: 0, OMAP SD/MMC: 1
*** Warning - readenv() failed, using default environment

mu***-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, bulk combine, bulk split, HB-ISO Rx, HB-ISO Tx, SoftConn)
mu***-hdrc: MHDRC RTL version 2.0
mu***-hdrc: setup fifo_mode 4
mu***-hdrc: 28/31 max ep, 16384/16384 memory
USB Peripheral mode controller at 47401000 using PIO, IRQ 0
mu***-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, bulk combine, bulk split, HB-ISO Rx, HB-ISO Tx, SoftConn)
mu***-hdrc: MHDRC RTL version 2.0
mu***-hdrc: setup fifo_mode 4
mu***-hdrc: 28/31 max ep, 16384/16384 memory
USB Host mode controller at 47401800 using PIO, IRQ 0
Net: not set. Validating first E-fuse MAC
cpsw, u***_ether
Hit any key to stop autoboot: 0
using mu***-hdrc, OUT ep1out IN ep1in STATUS ep2in
MAC 78:a5:04:af:56:ed
HOST MAC de:ad:be:af:00:00
RNDIS ready
mu***-hdrc: peripheral reset irq lost!
high speed config #2: 2 mA, Ethernet Gadget, using RNDIS
USB RNDIS network up!
BOOTP broadcast 1
BOOTP broadcast 2
BOOTP broadcast 3
DHCP client bound to address 192.168.100.19
using mu***-hdrc, OUT ep1out IN ep1in STATUS ep2in
MAC 78:a5:04:af:56:ed
HOST MAC de:ad:be:af:00:00
RNDIS ready
high speed config #2: 2 mA, Ethernet Gadget, using RNDIS
USB RNDIS network up!
Using u***_ether device
TFTP from server 192.168.100.1; our IP address is 192.168.100.19
Filename 'uImage'.
Load address: 0x81000000
Loading: T #################################################################
#################################################################
#################################################################
#################################################################
#################################################################
#################################################################
#################################################################
#################################################################
#################################################################
#################################################################
#################################################################
#################################################################
#################################################################
#################################################################
#################################################################
#########
1.5 MiB/s
done
Bytes transferred = 14440144 (dc56d0 hex)
## Booting kernel from Legacy Image at 81000000 ...
Image Name: Linux-3.2.0
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 14440080 Bytes = 13.8 MiB
Load Address: 80008000
Entry Point: 80008000
Verifying Checksum ... OK
Loading Kernel Image ... OK
OK

Starting kernel ...

Uncompressing Linux... done, booting the kernel.
[ 0.000000] Linux version 3.2.0 (lusuo@lusuo-virtual-machine) (gcc version 4.7.3 20130226 (prerelease) (crosstool-NG linaro-1.13.
1-4.7-2013.03-20130313 - Linaro GCC 2013.03) ) #12 Tue Apr 11 18:12:54 CST 2017
[ 0.000000] CPU: ARMv7 Processor [413fc082] revision 2 (ARMv7), cr=10c53c7d
[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
[ 0.000000] Machine: am335xevm
[ 0.000000] Memory policy: ECC disabled, Data cache writeback
[ 0.000000] AM335X ES2.1 (sgx neon )
[ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 130048
[ 0.000000] Kernel command line: root=/dev/mmcblk0p2 rootwait console=ttyO0,115200 enforcing=0
[ 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: 512MB = 512MB total
[ 0.000000] Memory: 494520k/494520k available, 29768k reserved, 0K highmem
[ 0.000000] Virtual kernel memory layout:
[ 0.000000] vector : 0xffff0000 - 0xffff1000 ( 4 kB)
[ 0.000000] fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB)
[ 0.000000] vmalloc : 0xe0800000 - 0xff000000 ( 488 MB)
[ 0.000000] lowmem : 0xc0000000 - 0xe0000000 ( 512 MB)
[ 0.000000] modules : 0xbf000000 - 0xc0000000 ( 16 MB)
[ 0.000000] .text : 0xc0008000 - 0xc052c000 (5264 kB)
[ 0.000000] .init : 0xc052c000 - 0xc1815000 (19364 kB)
[ 0.000000] .data : 0xc1816000 - 0xc18755d8 ( 382 kB)
[ 0.000000] .bss : 0xc18755fc - 0xc18a3ce4 ( 186 kB)
[ 0.000000] NR_IRQS:396
[ 0.000000] IRQ: Found an INTC at 0xfa200000 (revision 5.0) with 128 interrupts
[ 0.000000] Total of 128 interrupts on 1 active controller
[ 0.000000] OMAP clockevent source: GPTIMER2 at 24000000 Hz
[ 0.000000] omap_dm_timer_switch_src: Switching to HW default clocksource(sys_clkin_ck) for timer1, this may impact timekeeping i
n low power state
[ 0.000000] OMAP clocksource: GPTIMER1 at 24000000 Hz
[ 0.000000] sched_clock: 32 bits at 24MHz, resolution 41ns, wraps every 178956ms
[ 0.000000] Console: colour dummy device 80x30
[ 0.000161] Calibrating delay loop... 996.14 BogoMIPS (lpj=4980736)
[ 0.087770] pid_max: default: 32768 minimum: 301
[ 0.087867] Security Framework initialized
[ 0.087948] Mount-cache hash table entries: 512
[ 0.088266] CPU: Testing write buffer coherency: ok
[ 0.107618] omap_hwmod: pruss: failed to hardreset
[ 0.108601] print_constraints: dummy:
[ 0.108913] NET: Registered protocol family 16
[ 0.110680] OMAP GPIO hardware version 0.1
[ 0.112694] omap_mux_init: Add partition: #1: core, flags: 0
[ 0.114233] omap_i2c.1: alias fck already exists
[ 0.114950] omap2_mcspi.1: alias fck already exists
[ 0.115129] omap2_mcspi.2: alias fck already exists
[ 0.115873] edma.0: alias fck already exists
[ 0.115889] edma.0: alias fck already exists
[ 0.115902] edma.0: alias fck already exists
[ 0.133801] bio: create slab at 0
[ 0.135555] SCSI subsystem initialized
[ 0.137051] omap_i2c omap_i2c.1: bus 1 rev2.4.0 at 100 kHz
[ 0.138206] tps65910 1-002d: could not be detected
[ 0.139236] Advanced Linux Sound Architecture Driver Version 1.0.24.
[ 0.140112] Switching to clocksource gp timer
[ 0.151929] NET: Registered protocol family 2
[ 0.152101] IP route cache hash table entries: 4096 (order: 2, 16384 bytes)
[ 0.152361] TCP established hash table entries: 16384 (order: 5, 131072 bytes)
[ 0.152576] TCP bind hash table entries: 16384 (order: 4, 65536 bytes)
[ 0.152702] TCP: Hash tables configured (established 16384 bind 16384)
[ 0.152712] TCP reno registered
[ 0.152720] UDP hash table entries: 256 (order: 0, 4096 bytes)
[ 0.152737] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
[ 0.152885] NET: Registered protocol family 1
[ 0.153110] RPC: Registered named UNIX socket transport module.
[ 0.153121] RPC: Registered udp transport module.
[ 0.153127] RPC: Registered tcp transport module.
[ 0.153133] RPC: Registered tcp NFSv4.1 backchannel transport module.
[ 0.271629] NetWinder Floating Point Emulator V0.97 (double precision)
[ 0.289006] VFS: Disk quotas dquot_6.5.2
[ 0.289065] Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
[ 0.289499] msgmni has been set to 965
[ 0.292105] alg: No test for stdrng (krng)
[ 0.292711] io scheduler noop registered
[ 0.292722] io scheduler deadline registered
[ 0.292777] io scheduler cfq registered (default)
[ 0.293754] Could not set LED4 to fully on
[ 0.330997] omap_uart.0: ttyO0 at MMIO 0x44e09000 (irq = 72) is a OMAP UART0
[ 0.774227] console [ttyO0] enabled
[ 0.778313] omap_uart.1: ttyO1 at MMIO 0x48022000 (irq = 73) is a OMAP UART1
[ 0.786061] omap_uart.2: ttyO2 at MMIO 0x48024000 (irq = 74) is a OMAP UART2
[ 0.793787] omap_uart.3: ttyO3 at MMIO 0x481a6000 (irq = 44) is a OMAP UART3
[ 0.801513] omap_uart.4: ttyO4 at MMIO 0x481a8000 (irq = 45) is a OMAP UART4
[ 0.809195] omap_uart.5: ttyO5 at MMIO 0x481aa000 (irq = 46) is a OMAP UART5
[ 0.817287] omap4_rng omap4_rng: OMAP4 Random Number Generator ver. 2.00
[ 0.831442] brd: module loaded
[ 0.838426] loop: module loaded
[ 0.841930] i2c-core: driver [tsl2550] using legacy suspend method
[ 0.848390] i2c-core: driver [tsl2550] using legacy resume method
[ 0.854833] at24 1-0051: 32768 byte 24c256 EEPROM, writable, 64 bytes/write
[ 0.960140] No daughter card found
[ 0.963735] at24 1-0050: 32768 byte 24c256 EEPROM, writable, 64 bytes/write
[ 0.971023] [DEBUG]: mac addr 0:
[ 0.974572] [DEBUG]: mac addr 1:
[ 0.978121] [DEBUG]: mac addr 2:
[ 0.981679] [DEBUG]config.header: 0xEE3355AA
[ 0.986319] [DEBUG]config.name: A335BNLT00C02916BBBK265B
[ 0.992054] [DEBUG]config.version: 00C02916BBBK265B
[ 0.997329] [DEBUG]config.serial: 2916BBBK265B
[ 1.002158] [DEBUG]config.opt:
[ 1.005618] Board name: A335BNLT
[ 1.008986] Board version: 00C0
[ 1.012270] The board is a AM335x Beaglebone Black.
[ 1.017467] could not look up rtc
[ 1.022601] tps65217 1-0024: TPS65217 ID 0xe version 1.2
[ 1.030148] print_constraints: DCDC1: 900 <--> 1800 mV at 1500 mV
[ 1.038591] print_constraints: DCDC2: 900 <--> 3300 mV at 1325 mV
[ 1.047163] print_constraints: DCDC3: 900 <--> 1500 mV at 1125 mV
[ 1.055605] print_constraints: LDO1: 1000 <--> 3300 mV at 1800 mV
[ 1.064037] print_constraints: LDO2: 900 <--> 3300 mV at 3300 mV
[ 1.072391] print_constraints: LDO3: 1800 <--> 3300 mV at 1800 mV
[ 1.080786] print_constraints: LDO4: 1800 <--> 3300 mV at 3300 mV
[ 1.087725] Maximum current provided by the USB port is 500mA which is not sufficient
[ 1.087732] when operating @OPP120 and OPPTURBO. The current requirement for some
[ 1.087738] use-cases using OPP100 might also exceed the maximum current that the
[ 1.087743] USB port can provide. Unless you are fully confident that the current
[ 1.087749] requirements for OPP100 use-case don't exceed the USB limits, switching
[ 1.087754] to AC power is recommended.
[ 1.131764] omap_hsmmc.0: alias fck already exists
[ 1.137162] omap_hsmmc.1: alias fck already exists
[ 1.142549] omap_i2c.3: alias fck already exists
[ 1.147754] omap_i2c omap_i2c.3: bus 3 rev2.4.0 at 100 kHz
[ 1.155288] registered am33xx_sr device
[ 1.160903] mtdoops: mtd device (mtddev=name/number) must be supplied
[ 1.167942] omap2-nand driver initializing
[ 1.172385] OneNAND driver initializing
[ 1.177376] CAN device driver interface
[ 1.181404] CAN bus driver for Bosch D_CAN controller 1.0
[ 1.230169] davinci_mdio davinci_mdio.0: davinci mdio revision 1.6
[ 1.236634] davinci_mdio davinci_mdio.0: detected phy mask fffffffe
[ 1.245237] davinci_mdio.0: probed
[ 1.248804] davinci_mdio davinci_mdio.0: phy[0]: device 0:00, driver SMSC LAN8710/LAN8720
[ 1.258193] mousedev: PS/2 mouse device common for all mice
[ 1.264561] i2c /dev entries driver
[ 1.268700] Linux video capture interface: v2.00
[ 2.410152] omap_i2c omap_i2c.3: controller timed out
[ 3.410272] omap_i2c omap_i2c.3: controller timed out
[ 4.430196] omap_i2c omap_i2c.3: controller timed out
[ 5.450192] omap_i2c omap_i2c.3: controller timed out
[ 6.470147] omap_i2c omap_i2c.3: controller timed out
[ 7.490225] omap_i2c omap_i2c.3: controller timed out
[ 8.510279] omap_i2c omap_i2c.3: controller timed out
[ 9.530406] omap_i2c omap_i2c.3: controller timed out
[ 9.551296] OMAP Watchdog Timer Rev 0x01: initial timeout 60 sec
[ 9.558829] cpuidle: using governor ladder
[ 9.563532] cpuidle: using governor menu
[ 9.567828] [DEBUG]omap_hsmmc_gpio_init: 524
[ 9.573888] [DEBUG]omap_hsmmc_gpio_init: 524
[ 9.578636] mmc0: mmc_rescan_try_freq: trying to init card at 400000 Hz
[ 9.587217] omap4_aes_mod_init: loading AM33X AES driver
[ 9.592887] omap4-aes omap4-aes: AM33X AES hw accel rev: 3.02
[ 9.599303] omap4_aes_probe: probe() done
[ 9.603955] omap4_sham_mod_init: loading AM33X SHA/MD5 driver
[ 9.610070] omap4-sham omap4-sham: AM33X SHA/MD5 hw accel rev: 4.03
[ 9.632888] omap4_sham_probe: probe() done
[ 9.639418] ALSA device list:
[ 9.642569] No soundcards found.
[ 9.646120] oprofile: hardware counters not available
[ 9.651410] oprofile: using timer interrupt.
[ 9.655891] nf_conntrack version 0.5.0 (7726 buckets, 30904 max)
[ 9.662656] ip_tables: (C) 2000-2006 Netfilter Core Team
[ 9.668307] TCP cubic registered
[ 9.671713] NET: Registered protocol family 17
[ 9.676364] can: controller area network core (rev 20090105 abi 8)
[ 9.682900] NET: Registered protocol family 29
[ 9.687543] can: raw protocol (rev 20090105)
[ 9.692013] can: broadcast manager protocol (rev 20090105 t)
[ 9.697957] Registering the dns_resolver key type
[ 9.702942] VFP support v0.3: implementor 41 architecture 3 part 30 variant c rev 3
[ 9.710967] ThumbEE CPU extension supported.
[ 9.715486] mux: Failed to setup hwmod io irq -22
[ 9.720997] Power Management for AM33XX family
[ 9.725839] Trying to load am335x-pm-firmware.bin (60 secs timeout)
[ 9.732545] Copied the M3 firmware to UMEM
[ 9.736896] Cortex M3 Firmware Version = 0x181
[ 9.742372] create_regulator: DCDC2: Failed to create debugfs directory
[ 9.749973] smartreflex smartreflex: am33xx_sr_probe: Driver initialized
[ 9.761303] clock: disabling unused clocks to save power
[ 9.775191] FUNC mmc_add_card, LINE 269
[ 9.779300] [DEBUG]mmc card->type : 0
[ 9.783260] FUNC mmc_add_card, LINE 274
[ 9.787357] mmc0: new high speed MMC card at address 0001
[ 9.797813] mmcblk0: mmc0:0001 MMC02G 1.78 GiB
[ 9.802745] mmcblk0boot0: mmc0:0001 MMC02G partition 1 1.00 MiB
[ 9.810682] mmcblk0boot1: mmc0:0001 MMC02G partition 2 1.00 MiB
[ 9.820531] mmcblk0: unknown partition table
[ 9.828152] mmcblk0boot1: unknown partition table
[ 9.836506] mmcblk0boot0: unknown partition table
[ 9.843290] mmc1: mmc_rescan_try_freq: trying to init card at 400000 Hz
[ 9.943068] Detected MACID=78:a5:4:af:56:ed
[ 9.948431] cpsw: Detected MACID = 78:a5:04:af:56:ef
[ 9.954524] drivers/rtc/hctosys.c: unable to open rtc device (rtc0)
[ 9.961217] Warning: unable to open an initial console.
[ 9.989419] Freeing init memory: 19364K
[ 9.995148] Kernel panic - not syncing: Attempted to kill init!
[ 10.001424] Backtrace:
[ 10.004014] [] (dump_backtrace+0x0/0x10c) from [] (dump_stack+0x18/0x1c)
[ 10.012852] r6:df02bc00 r5:c04aa9c0 r4:c18782c8 r3:c1839e4c
[ 10.018785] [] (dump_stack+0x0/0x1c) from [] (panic+0x64/0x194)
[ 10.026816] [] (panic+0x0/0x194) from [] (do_exit+0x5b0/0x65c)
[ 10.034734] r3:df02bc00 r2:df02df60 r1:df02df60 r0:c04aa9c0
[ 10.040667] r7:000000f8
[ 10.043319] [] (do_exit+0x0/0x65c) from [] (do_group_exit+0x44/0xa4)
[ 10.051783] r7:000000f8
[ 10.054435] [] (do_group_exit+0x0/0xa4) from [] (__wake_up_parent+0x0/0x28)
[ 10.063533] r4:bee40a48 r3:0000007f
[ 10.067289] [] (sys_exit_group+0x0/0x18) from [] (ret_fast_syscall+0x0/0x30)

看log，应该是把内核tftp进去之后没有加载起来，这个kernel有移植或者裁剪过么？

你好！周工。
我成功地用tf卡把emmc移植上了系统，也可以从emmc正常启动系统了。现在有这么一个问题：从emmc启动系统可以正常工作，但是下次设备没有插入tf卡的话，系统就无法进入到文件系统中，下面是没有tf卡的启动信息：

U-Boot SPL 2014.04-00014-g47880f5 (Apr 22 2014 - 13:23:54)
reading args
spl_load_image_fat_os: error reading image args, err - -1
reading u-boot.img
reading u-boot.img

U-Boot 2014.04-00014-g47880f5 (Apr 22 2014 - 13:23:54)
I2C:   ready
DRAM:  512 MiB
NAND:  0 MiB
MMC:   OMAP SD/MMC: 0, OMAP SD/MMC: 1
*** Warning - readenv() failed, using default environment
Net:   not set. Validating first E-fuse MAC
cpsw, u***_ether
Hit any key to stop autoboot:  0
gpio: pin 53 (gpio 53) value is 1
Card did not respond to voltage select!
mmc0(part 0) is current device
Card did not respond to voltage select!
gpio: pin 56 (gpio 56) value is 0
gpio: pin 55 (gpio 55) value is 0
gpio: pin 54 (gpio 54) value is 0
mmc1(part 0) is current device
gpio: pin 54 (gpio 54) value is 1
SD/MMC found on device 1
reading uEnv.txt
1698 bytes read in 7 ms (236.3 KiB/s)
gpio: pin 55 (gpio 55) value is 1
Loaded environment from uEnv.txt
Importing environment from mmc ...
Checking if uenvcmd is set ...
gpio: pin 56 (gpio 56) value is 1
Running uenvcmd ...
reading zImage
4382704 bytes read in 253 ms (16.5 MiB/s)
reading initrd.img
2957458 bytes read in 171 ms (16.5 MiB/s)
reading /dtbs/am335x-boneblack.dtb
25130 bytes read in 9 ms (2.7 MiB/s)
Kernel image @ 0x82000000 [ 0x000000 - 0x42dff0 ]
## Flattened Device Tree blob at 88000000
   Booting using the fdt blob at 0x88000000
   Using Device Tree in place at 88000000, end 88009229
Starting kernel ...
Uncompressing Linux... done, booting the kernel.
[    0.355834] omap2_mbox_probe: platform not supported
[    0.362420] tps65217-bl tps65217-bl: no platform data provided
[    0.426610] bone-capemgr bone_capemgr.9: slot #0: No cape found
[    0.463719] bone-capemgr bone_capemgr.9: slot #1: No cape found
[    0.500827] bone-capemgr bone_capemgr.9: slot #2: No cape found
[    0.537936] bone-capemgr bone_capemgr.9: slot #3: No cape found
[    0.556723] omap_hsmmc mmc.5: of_parse_phandle_with_args of 'reset' failed
[    0.618254] pinctrl-single 44e10800.pinmux: pin 44e10854 already requested by 44e10800.pinmux; cannot claim for gpio-leds.8
[    0.629962] pinctrl-single 44e10800.pinmux: pin-21 (gpio-leds.8) status -22
[    0.637245] pinctrl-single 44e10800.pinmux: could not request pin 21 on device pinctrl-single
Loading, please wait...
modprobe: chdir(3.8.13): No such file or directory
Gave up waiting for root device.  Common problems:
 - Boot args (cat /proc/cmdline)
   - Check rootdelay= (did the system wait long enough?)
   - Check root= (did the system wait for the right device?)
 - Missing modules (cat /proc/modules; ls /dev)
ALERT!  /dev/mmcblk1p2 does not exist.  Dropping to a shell!
modprobe: chdir(3.8.13): No such file or directory
modprobe: chdir(3.8.13): Žo such file or directory
modprobe: chdir(3.8.13): No such file or directory
modprobe: chdir(3.8.13): No such file or directory
modprobe: chdir(3.8.13): No such file or directory
modprobe: chdir(3.8.13): No such file or directory

BusyBox v1.20.2 (Debian 1:1.20.0-7) built-in shell (ash)
Enter 'help' for a list of built-in commands.
/bin/sh: can't access tty; job control turned off
(initramfs)
 
后来发现是环境变量的问题：板子的环境变量uEnv.txt中
“mmcroot=/dev/mmcblk1p2 ro”
进入系统后，将它改为
“mmcroot=/dev/mmcblk0p2 ro”，这样拔掉sd卡后就可以从emmc正常启动系统了。
但是，我想问的是：怎么能够让emmc默认是/dev/mmcblk0p2呢，不管加了什么其他的mmc设备都不会影响从emmc中正常的启动系统。
望赐教！！！

系统的环境变量是可以通过u-boot下的config.h修改的。

你好 我按照bb black的文档烧写了新的镜像文件BBB-eMMC-flasher-debian-7.5-2014-05-14-2gb.img。但是u***一上电不到15秒4个灯就全亮。然后没有规律的闪烁。半个小时后4个灯全亮停止闪烁。这是烧写成功了么？和文档描述不一致。还有看打印信息：
Starting kernel ...
Uncompressing Linux... done, booting the kernel.
[    0.378597] omap2_mbox_probe: platform not supported
[    0.533119] tps65217-bl tps65217-bl: no platform data provided
[    0.596968] bone-capemgr bone_capemgr.9: slot #0: No cape found
[    0.634076] bone-capemgr bone_capemgr.9: slot #1: No cape found
[    0.671183] bone-capemgr bone_capemgr.9: slot #2: No cape found
[    0.708292] bone-capemgr bone_capemgr.9: slot #3: No cape found
[    0.722951] bone-capemgr bone_capemgr.9: slot #6: BB-BONELT-HDMIN conflict P8.45 (#5:BB-BONELT-HDMI)
[    0.732559] bone-capemgr bone_capemgr.9: slot #6: Failed verification
[    0.739300] bone-capemgr bone_capemgr.9: loader: failed to load slot-6 BB-BONELT-HDMIN:00A0 (prio 2)
[    0.756803] omap_hsmmc mmc.5: of_parse_phandle_with_args of 'reset' failed
[    0.819903] pinctrl-single 44e10800.pinmux: pin 44e10854 already requested by 44e10800.pinmux; cannot claim for gpio-leds.8
[    0.831574] pinctrl-single 44e10800.pinmux: pin-21 (gpio-leds.8) status -22
[    0.838860] pinctrl-single 44e10800.pinmux: could not request pin 21 on device pinctrl-single
Loading, please wait...
Scanning for Btrfs filesystems
systemd-fsck[213]: eMMC-Flasher: clean, 78793/102752 files, 390222/410368 blocks
 
这linux没有版本号。请问这烧写有问题么。我敲命令echo mem > /sys/power/state显示no found device。请问这和我的版本有关系么。

am335x的芯片需要RNDIS驱动嘛？IP地址需要修改嘛？

請問我參考作者提供的篇文檔有提到 将 SD 卡上文件系统中的/etc/init.d/fetcher.sh 修改,但是我沒有這個檔案(fetcher.sh)??請問您怎麼處理與修改?謝謝您!

PS : 我用的SDK : ti-processor-sdk-linux-am335x-evm-02.00.00.00-Linux-x86-Install

这个脚本是要加到文件系统里的。