beaglebone black EZSDK linux从EMMC中启动一
参考这位兄弟的博客做的http://my.oschina.net/234148609/blog/201861
- eZsdk增加emmc支持
Chipsee提供的BSP是基于TI提供的eZSDK5.7版本，而且没有对BBB的emmc进行支持，如果想从BBB的emmc启动，则需要在内核中增加emmc支持。
3.1 内核emmc支持
在Chipsee提供的linux3.2基础上增加对BBB上emmc的支持（eZSDK5.7到eZSDK6.0的区别）
编辑board-am335xevm.c，增加mmc1_emmc_init初始化：
然后在板卡配置结构体中增加mmc1_emmc_init调用： 
(上图有误：mmc1_emmc_init应该在mmc0_init之前)
重新编译内核后从SD卡启动，可以看到： 
mmcblk1p2 mount失败。
注意：
- mmc0: SD卡接口
- mmc1: BBB板载emmc接口
- mmcblk1p1:emmc fat分区
- mmcblk1p2:emmc ext3分区
通过df -H 可以看到mmcblk1p2文件系统是ext4，在内核编译选项增加ext4支持：
1 |
编辑 .config文件，增加CONFIG_EXT4_FS=y，重新编译内核。 |
1 |
挂载成功: |
3.2 uboot emmc支持
1 |
1). Chipsee提供的uboot支持从emmc和sd卡启动，如需从emmc启动则需要对uEnv.txt稍作修改： |
将 fatload mmc 0 81000000 改为fatload mmc 1 81000000
1 |
2). eZsdk提供的uboot支持从emmc启动的，只是无法识别emmc中文件系统所在的ext4分区，而出厂的BBB默认安装angstrom，并且文件系统被格式化成了ext4分区（eZsdk提供的creatSD.sh是将SD卡分为fat和ext3分区） |
BBB的emmc出厂默认带angstrom系统分为fat32和ext4，如果不想改动emmc分区则需要在Chipsee的uboot中增加对ext4支持： 
1 |
3). 在uboot的am335x_evm.h头文件中使能storage_emmc可有可无，使能storage_emmc的目的是给fastboot使用。 |
4.更新emmc
将emmc中默认的angstrom更新为eZsdk5.7，步骤：
- 1) 从SD卡启动（Chipsee预装的、或者用Chipsee提供的mksdcard.sh制作的,但是uImage替换掉，支持emmc），进入shell
- 2) 格式化emmc的ext4分区
在shell窗口中执行：
1 |
mkfs.ext3 -j -L “rootfs” /dev/mmcblk1p2 |
重启，重启后/dev/mmcblk1p2会被挂载到 /media/mmcblk1p2
- 3) 通过wget将eZsdk提供的rootfs.tar.gz（或者是Chipsee的）拷贝到本地：
在shell窗口中执行：
1 |
wget ftp://zr:[email protected]/rootfs.tar.gz |
- 4) 将文件系统解压到emmc的ext分区：
1 |
tar -zxvf rootfs.tar.gz -C /media/mmcblk1p2 |
- 5) 将之前编译好的MLO UBOOT以及kernel和uEnv.txt拷贝到 /media/mmcblk1p1中
- 6) Chipsee提供的uEnv内容如下：
1 |
bootargs=console=ttyO1,115200n8 mem=512M root=/dev/mmcblk0p2 rw rootfstype=ext3 rootwait rootdelay=1 init=/init ip=off consoleblank=0 |
2 |
|
3 |
bootcmd=mmc rescan ; fatload mmc 0 81000000 uImage ; bootm 81000000 |
4 |
|
5 |
uenvcmd=boot |
将 fatload mmc 0 81000000 改为fatload mmc 1 81000000即可
- 7)这样emmc更新完毕。
需要注意的完成上面的这些步骤我的板子仍然没启动起来，不知道为什么，uboot似乎没有读uEnv.txt。最后在uboot下输入命令行去读的内核，并设置相应的bootargs和bootcmd：
setenv bootargs console=ttyO1,115200n8 mem=512M root=/dev/mmcblk0p2 rw rootfstype=ext3 rootwait rootdelay=1 init=/init ip=off;
mmc dev 1;
fatload mmc 1 81000000 uImage ;
bootm 81000000
uenvcmd=boot
mmc dev 1;
fatload mmc 1 81000000 uImage ;
bootm 81000000
uenvcmd=boot
附上串口消息：
U-Boot SPL 2011.09 (Mar 26 2014 - 18:38:48)
Chipsee AM335x EVM Board
U-Boot SPL 2011.09 (Mar 26 2014 - 18:38:48)
Chipsee AM335x EVM Board
OMAP SD/MMC: 1
reading u-boot.img
reading u-boot.img
U-Boot 2011.09 (Mar 26 2014 - 00:09:00)
I2C: ready
DRAM: 512 MiB
WARNING: Caches not enabled
NAND: HW ECC Hamming Code selected
No NAND device found!!!
0 MiB
MMC: OMAP SD/MMC: 0, OMAP SD/MMC: 1
*** Warning - readenv() failed, using default environment
Net: cpsw
Hit any key to stop autoboot: 0
Card did not respond to voltage select!
Booting from nand ...
HW ECC BCH8 Selected
no devices available
Wrong Image Format for bootm command
ERROR: can't get kernel image!
U-Boot# setenv bootargs console=ttyO1,115200n8 mem=512M root=/dev/mmcblk0p2 rw rootfstype=ext3 rootwait rootdelay=1 init=/init ip=off;
U-Boot# mmc dev 1;
mmc1(part 0) is current device
U-Boot# fatload mmc 1 81000000 uImage ;
reading uImage
3327856 bytes read
U-Boot# bootm 81000000
## Booting kernel from Legacy Image at 81000000 ...
Image Name: Linux-3.2.0
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 3327792 Bytes = 3.2 MiB
Load Address: 80008000
Entry Point: 80008000
Verifying Checksum ... OK
Loading Kernel Image ... OK
OK
Starting kernel ...
[ 0.000000] Linux version 3.2.0 (ubuntu@ubuntu) (gcc version 4.5.3 20110311 (prerelease) (GCC) ) #1 Wed Mar 26 19:03:22 PDT 2014
[ 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 ES2.0 (sgx neon )
[ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 130048
[ 0.000000] Kernel command line: console=ttyO1,115200n8 mem=512M root=/dev/mmcblk0p2 rw rootfstype=ext3 rootwait rootdelay=1 init=/init ip=off
[ 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: 512848k/512848k available, 11440k 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 - 0xc05ea000 (6024 kB)
[ 0.000000] .init : 0xc05ea000 - 0xc0626000 ( 240 kB)
[ 0.000000] .data : 0xc0626000 - 0xc068e9d0 ( 419 kB)
[ 0.000000] .bss : 0xc068e9f4 - 0xc06bd8e4 ( 188 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 in 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
[ 0.000145] Calibrating delay loop... 996.14 BogoMIPS (lpj=4980736)
[ 0.087754] pid_max: default: 32768 minimum: 301
[ 0.087845] Security Framework initialized
[ 0.087929] Mount-cache hash table entries: 512
[ 0.088235] CPU: Testing write buffer coherency: ok
[ 0.107532] omap_hwmod: pruss: failed to hardreset
[ 0.108439] print_constraints: dummy:
[ 0.108718] NET: Registered protocol family 16
[ 0.110352] OMAP GPIO hardware version 0.1
[ 0.112287] omap_mux_init: Add partition: #1: core, flags: 0
[ 0.113756] omap_i2c.1: alias fck already exists
[ 0.114437] omap2_mcspi.1: alias fck already exists
[ 0.114607] omap2_mcspi.2: alias fck already exists
[ 0.115302] edma.0: alias fck already exists
[ 0.115317] edma.0: alias fck already exists
[ 0.115331] edma.0: alias fck already exists
[ 0.135225] bio: create slab
[ 0.136929] SCSI subsystem initialized
[ 0.138198] usbcore: registered new interface driver usbfs
[ 0.138434] usbcore: registered new interface driver hub
[ 0.138584] usbcore: registered new device driver usb
[ 0.138713] musb-ti81xx musb-ti81xx: musb0, board_mode=0x13, plat_mode=0x3
[ 0.138928] musb-ti81xx musb-ti81xx: musb1, board_mode=0x13, plat_mode=0x1
[ 0.157769] omap_i2c omap_i2c.1: bus 1 rev2.4.0 at 100 kHz
[ 0.177732] tps65910 1-002d: could not be detected
[ 0.178739] Advanced Linux Sound Architecture Driver Version 1.0.24.
[ 0.179589] Switching to clocksource gp timer
[ 0.191070] musb-hdrc: version 6.0, ?dma?, otg (peripheral+host)
[ 0.191218] musb-hdrc musb-hdrc.0: dma type: pio
[ 0.191480] MUSB0 controller's USBSS revision = 4ea20800
[ 0.191499] musb0: Enabled SW babble control
[ 0.192010] musb-hdrc musb-hdrc.0: USB OTG mode controller at e083c000 using PIO, IRQ 18
[ 0.192136] musb-hdrc musb-hdrc.1: dma type: pio
[ 0.192379] MUSB1 controller's USBSS revision = 4ea20800
[ 0.192394] musb1: Enabled SW babble control
[ 0.192520] musb-hdrc musb-hdrc.1: MUSB HDRC host driver
[ 0.192580] musb-hdrc musb-hdrc.1: new USB bus registered, assigned bus number 1
[ 0.192683] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
[ 0.192695] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 0.192705] usb usb1: Product: MUSB HDRC host driver
[ 0.192713] usb usb1: Manufacturer: Linux 3.2.0 musb-hcd
[ 0.192721] usb usb1: SerialNumber: musb-hdrc.1
[ 0.193365] hub 1-0:1.0: USB hub found
[ 0.193388] hub 1-0:1.0: 1 port detected
[ 0.193819] musb-hdrc musb-hdrc.1: USB Host mode controller at e083e800 using PIO, IRQ 19
[ 0.194154] NET: Registered protocol family 2
[ 0.194302] IP route cache hash table entries: 4096 (order: 2, 16384 bytes)
[ 0.194540] TCP established hash table entries: 16384 (order: 5, 131072 bytes)
[ 0.194756] TCP bind hash table entries: 16384 (order: 4, 65536 bytes)
[ 0.194882] TCP: Hash tables configured (established 16384 bind 16384)
[ 0.194891] TCP reno registered
[ 0.194900] UDP hash table entries: 256 (order: 0, 4096 bytes)
[ 0.194917] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
[ 0.195056] NET: Registered protocol family 1
[ 0.195246] RPC: Registered named UNIX socket transport module.
[ 0.195256] RPC: Registered udp transport module.
[ 0.195262] RPC: Registered tcp transport module.
[ 0.195269] RPC: Registered tcp NFSv4.1 backchannel transport module.
[ 0.195448] NetWinder Floating Point Emulator V0.97 (double precision)
[ 0.212274] VFS: Disk quotas dquot_6.5.2
[ 0.212329] Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
[ 0.212944] msgmni has been set to 1001
[ 0.215369] alg: No test for stdrng (krng)
[ 0.215910] io scheduler noop registered
[ 0.215921] io scheduler deadline registered
[ 0.215975] io scheduler cfq registered (default)
[ 0.216884] Could not set LED4 to fully on
[ 0.250473] omap_uart.0: ttyO0 at MMIO 0x44e09000 (irq = 72) is a OMAP UART0
[ 0.250816] omap_uart.1: ttyO1 at MMIO 0x48022000 (irq = 73) is a OMAP UART1
[ 0.833541] console [ttyO1] enabled
[ 0.837619] omap_uart.2: ttyO2 at MMIO 0x48024000 (irq = 74) is a OMAP UART2
[ 0.845340] omap_uart.3: ttyO3 at MMIO 0x481a6000 (irq = 44) is a OMAP UART3
[ 0.853029] omap_uart.4: ttyO4 at MMIO 0x481a8000 (irq = 45) is a OMAP UART4
[ 0.860719] omap_uart.5: ttyO5 at MMIO 0x481aa000 (irq = 46) is a OMAP UART5
[ 0.868729] omap4_rng omap4_rng: OMAP4 Random Number Generator ver. 2.00
[ 0.882736] brd: module loaded
[ 0.889678] loop: module loaded
[ 0.893110] i2c-core: driver [tsl2550] using legacy suspend method
[ 0.899569] i2c-core: driver [tsl2550] using legacy resume method
[ 0.906003] at24 1-0051: 32768 byte 24c256 EEPROM, writable, 64 bytes/write
[ 1.009621] No daughter card found
[ 1.013204] at24 1-0050: 32768 byte 24c256 EEPROM, writable, 64 bytes/write
[ 1.020490] The board is a Chipsee Beaglebone Black Expansion.
[ 1.026934] omap_hsmmc.0: alias fck already exists
[ 1.032388] omap_hsmmc.1: alias fck already exists
[ 1.038000] da8xx_lcdc.0: alias fck already exists
[ 1.043544] da8xx_lcdc da8xx_lcdc.0: GLCD: Found HJ070NA13A panel
[ 1.068848] Console: switching to colour frame buffer device 128x37
[ 1.085343] omap_i2c.2: alias fck already exists
[ 1.109663] omap_i2c omap_i2c.2: bus 2 rev2.4.0 at 100 kHz
[ 1.116419] davinci-mcasp.0: alias fck already exists
[ 1.122647] d_can.0: alias fck already exists
[ 1.129947] mtdoops: mtd device (mtddev=name/number) must be supplied
[ 1.136990] omap2-nand driver initializing
[ 1.141422] OneNAND driver initializing
[ 1.146392] CAN device driver interface
[ 1.150424] CAN bus driver for Bosch D_CAN controller 1.0
[ 1.156716] d_can d_can.0: device registered (irq=52, irq_obj=53)
[ 1.209638] davinci_mdio davinci_mdio.0: davinci mdio revision 1.6
[ 1.216105] davinci_mdio davinci_mdio.0: detected phy mask fffffffe
[ 1.223264] davinci_mdio.0: probed
[ 1.226821] davinci_mdio davinci_mdio.0: phy[0]: device 0:00, driver SMSC LAN8710/LAN8720
[ 1.235634] usbcore: registered new interface driver zd1201
[ 1.241625] usbcore: registered new interface driver cdc_ether
[ 1.247842] usbcore: registered new interface driver cdc_eem
[ 1.253933] usbcore: registered new interface driver dm9601
[ 1.259810] cdc_ncm: 04-Aug-2011
[ 1.263306] usbcore: registered new interface driver cdc_ncm
[ 1.269221] Initializing USB Mass Storage driver...
[ 1.274500] usbcore: registered new interface driver usb-storage
[ 1.280792] USB Mass Storage support registered.
[ 1.285956] mousedev: PS/2 mouse device common for all mice
[ 1.293225] input: ft5x06_ts as /devices/virtual/input/input0
[ 1.300140] input: ti-tsc as /devices/platform/omap/ti_tscadc/tsc/input/input1
[ 1.308373] i2c /dev entries driver
[ 1.312516] Linux video capture interface: v2.00
[ 1.317597] usbcore: registered new interface driver uvcvideo
[ 1.323621] USB Video Class driver (1.1.1)
[ 1.600402] OMAP Watchdog Timer Rev 0x01: initial timeout 60 sec
[ 1.606883] _regulator_get: deviceless supply vdd_mpu not found, using dummy regulator
[ 1.615543] cpuidle: using governor ladder
[ 1.620223] cpuidle: using governor menu
[ 1.628054] omap4_aes_mod_init: loading AM33X AES driver
[ 1.633739] omap4-aes omap4-aes: AM33X AES hw accel rev: 3.02
[ 1.640396] omap4_aes_probe: probe() done
[ 1.644781] omap4_sham_mod_init: loading AM33X SHA/MD5 driver
[ 1.650922] omap4-sham omap4-sham: AM33X SHA/MD5 hw accel rev: 4.03
[ 1.664493] omap4_sham_probe: probe() done
[ 1.670879] usbcore: registered new interface driver usbhid
[ 1.676738] usbhid: USB HID core driver
[ 1.681282] tiadc tiadc: attached adc driver
[ 1.689365] usbcore: registered new interface driver snd-usb-audio
[ 1.697354] _regulator_get: 2-001b supply IOVDD not found, using dummy regulator
[ 1.705176] _regulator_get: 2-001b supply DVDD not found, using dummy regulator
[ 1.712857] _regulator_get: 2-001b supply AVDD not found, using dummy regulator
[ 1.720540] _regulator_get: 2-001b supply DRVDD not found, using dummy regulator
[ 1.730359] asoc: tlv320aic3x-hifi <-> davinci-mcasp.0 mapping ok
[ 1.737777] ALSA device list:
[ 1.740917] #0: AM335X EVM
[ 1.743927] oprofile: hardware counters not available
[ 1.749203] oprofile: using timer interrupt.
[ 1.753693] nf_conntrack version 0.5.0 (8013 buckets, 32052 max)
[ 1.760443] ip_tables: (C) 2000-2006 Netfilter Core Team
[ 1.766092] TCP cubic registered
[ 1.769467] NET: Registered protocol family 17
[ 1.774139] can: controller area network core (rev 20090105 abi 8)
[ 1.780684] NET: Registered protocol family 29
[ 1.785344] can: raw protocol (rev 20090105)
[ 1.789818] can: broadcast manager protocol (rev 20090105 t)
[ 1.795761] Registering the dns_resolver key type
[ 1.800745] VFP support v0.3: implementor 41 architecture 3 part 30 variant c rev 3
[ 1.808759] ThumbEE CPU extension supported.
[ 1.813292] mux: Failed to setup hwmod io irq -22
[ 1.818743] Power Management for AM33XX family
[ 1.823583] Trying to load am335x-pm-firmware.bin (60 secs timeout)
[ 1.830274] Copied the M3 firmware to UMEM
[ 1.834628] Cortex M3 Firmware Version = 0x18
[ 1.839690] sr_init: platform driver register failed
[ 1.847622] clock: disabling unused clocks to save power
[ 1.862884] Detected MACID=1c:ba:8c:e1:8:a8
[ 1.868155] cpsw: Detected MACID = 1c:ba:8c:e1:08:aa
[ 1.874237] drivers/rtc/hctosys.c: unable to open rtc device (rtc0)
[ 1.881110] Waiting 1sec before mounting root device...
[ 1.887812] mmc1: new high speed MMC card at address 0001
[ 1.893979] mmcblk0: mmc1:0001 MMC02G 1.78 GiB
[ 1.898818] mmcblk0boot0: mmc1:0001 MMC02G partition 1 1.00 MiB
[ 1.905115] mmcblk0boot1: mmc1:0001 MMC02G partition 2 1.00 MiB
[ 1.913168] mmcblk0: p1 p2
[ 1.918030] mmcblk0boot1: unknown partition table
[ 1.924615] mmcblk0boot0: unknown partition table
[ 2.956196] kjournald starting. Commit interval 5 seconds
[ 2.965618] EXT3-fs (mmcblk0p2): using internal journal
[ 2.971095] EXT3-fs (mmcblk0p2): recovery complete
[ 2.978254] EXT3-fs (mmcblk0p2): mounted filesystem with ordered data mode
[ 2.985496] VFS: Mounted root (ext3 filesystem) on device 179:2.
[ 2.992049] Freeing init memory: 240K
[ 2.998013] Failed to execute /init. Attempting defaults...
INIT: version 2.88 booting
Starting udev
Starting Bootlog daemon: bootlogd: cannot allocate pseudo tty: No such file or directory
bootlogd.
ALSA: Restoring mixer settings...
No state is present for card EVM
Found hardware: "AM335X_EVM" "" "" "" ""
Hardware is initialized using a generic method
No state is present for card EVM
Configuring network interfaces... [ 8.069008] net eth0: CPSW phy found : id is : 0x7c0f1
udhcpc (v1.20.2) started
Sending discover...
Sending discover...
Sending discover...
No lease, failing
done.
hwclock: can't open '/dev/misc/rtc': No such file or directory
Fri Apr 5 12:35:00 UTC 2013
hwclock: can't open '/dev/misc/rtc': No such file or directory
INIT: Entering runlevel: 5
Failed to open "/etc/machine-id": No such file or directory
Starting Dropbear SSH server: dropbear.
Starting telnet daemon.
Performing wifi calibration...
rm: can't remove '/lib/firmware/ti-connectivity/wl1271-nvs.bin': No such file or directory
Error: Module wl12xx_sdio is not currently loaded
nl80211 not found.
[ 17.452340] Disabling lock debugging due to kernel taint
hwclock: can't open '/dev/misc/rtc': No such file or directory
Starting network benchmark server: netserver.
Starting syslogd/klogd: done
Starting thttpd.
Starting PVR
Starting Lighttpd Web Server: lighttpd.
2013-04-05 12:35:00: (log.c.166) server started
/
Starting Matrix GUI application.
[ 19.451238] gadget: Mass Storage Function, version: 2009/09/11
[ 19.457463] gadget: Number of LUNs=1
[ 19.461335] lun0: LUN: removable file: /dev/mmcblk0p1
[ 19.466732] gadget: Mass Storage Gadget, version: 2009/09/11
[ 19.472757] gadget: userspace failed to provide iSerialNumber
[ 19.478866] gadget: g_mass_storage ready
[ 19.483077] musb-hdrc musb-hdrc.0: MUSB HDRC host driver
[ 19.488658] musb-hdrc musb-hdrc.0: new USB bus registered, assigned bus number 2
[ 19.496494] usb usb2: New USB device found, idVendor=1d6b, idProduct=0002
[ 19.503605] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 19.511162] usb usb2: Product: MUSB HDRC host driver
[ 19.516350] usb usb2: Manufacturer: Linux 3.2.0 musb-hcd
[ 19.521907] usb usb2: SerialNumber: musb-hdrc.0
[ 19.527076] hub 2-0:1.0: USB hub found
[ 19.531041] hub 2-0:1.0: 1 port detected
Stopping Bootlog daemon: bootlogd.
_____ _____ _ _
| _ |___ ___ ___ ___ | _ |___ ___ |_|___ ___| |_
| | _| .'| . | . | | __| _| . | | | -_| _| _|
|__|__|_| |__,|_ |___| |__| |_| |___|_| |___|___|_|
|___| |___|
Arago Project http://arago-project.org am335x-evm ttyO1
Arago 2013.02 am335x-evm ttyO1
am335x-evm login: