Estou tentando fazer com que meu sistema incorporado execute um initramfs. No momento, 'init' neste initramfs não faz nada além de ecoar uma mensagem para testar se está sendo executada.
Meu script de inicialização:
#!/bin/sh
echo "HELLO INITRAMFS"
Meu arquivo cpio initramfs contém o busybox vinculado estaticamente. 'init' está localizado em / init no sistema de arquivos. Primeiro eu crio o arquivo cpio e depois o converto para o u-boot.
(find initramfs-test |cpio -o -H newc --quiet) > initramfs.cpio
mkimage -A arm -a 80008000 -e 80008000 -T ramdisk -C none -n uInitrd -d initramfs.cpio ./uInitrd
Colocando este arquivo uInitrd com meu kernel em uma partição "fat" em um cartão SD e inicializando no prompt de "u-boot" Eu carrego os dois arquivos na memória, configuro meus bootargs e inicializo.
RIM-U-Boot# fatload mmc 0 0x81000000 uImage
reading uImage
4024775 bytes read in 415 ms (9.2 MiB/s)
RIM-U-Boot# fatload mmc 0 0x85000000 uInitrd
reading uInitrd
1410112 bytes read in 148 ms (9.1 MiB/s)
RIM-U-Boot# setenv bootargs console=${console} root=/dev/ram0 rootfstype=ramfs initrd=0x85000000
RIM-U-Boot# bootm 0x81000000 0x85000000
## Booting kernel from Legacy Image at 81000000 ...
Image Name: Linux 4.1 + Devicetree
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 4024711 Bytes = 3.8 MiB
Load Address: 80008000
Entry Point: 80008000
Verifying Checksum ... OK
## Loading init Ramdisk from Legacy Image at 85000000 ...
Image Name: uInitrd
Image Type: ARM Linux RAMDisk Image (uncompressed)
Data Size: 1410048 Bytes = 1.3 MiB
Load Address: 80008000
Entry Point: 80008000
Verifying Checksum ... OK
Loading Kernel Image ... OK
OK
Starting kernel ...
[ 0.000000] Booting Linux on physical CPU 0x0
[ 0.000000] Initializing cgroup subsys cpuset
[ 0.000000] Initializing cgroup subsys cpu
[ 0.000000] Initializing cgroup subsys cpuacct
[ 0.000000] Linux version 4.1.18-ts-armv7l-crown-1.0 (mjohn@vbox) (gcc version 4.8.3 (Timesys 20161024) ) #1 SMP Tue Nov 13 16:40:10 EST 2018
[ 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] Machine model: Crown RIM
[ 0.000000] cma: Reserved 16 MiB at 0x86800000
[ 0.000000] Memory policy: Data cache writeback
[ 0.000000] CPU: All CPU(s) started in SVC mode.
[ 0.000000] AM335X ES2.1 (neon )
[ 0.000000] PERCPU: Embedded 13 pages/cpu @c7c77000 s23296 r8192 d21760 u53248
[ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 31968
[ 0.000000] Kernel command line: console=ttyO3,115200n8 root=/dev/ram0 rootfstype=ramfs initrd=0x85000000
[ 0.000000] PID hash table entries: 512 (order: -1, 2048 bytes)
[ 0.000000] Dentry cache hash table entries: 16384 (order: 4, 65536 bytes)
[ 0.000000] Inode-cache hash table entries: 8192 (order: 3, 32768 bytes)
[ 0.000000] Memory: 91580K/129024K available (7192K kernel code, 871K rwdata, 2580K rodata, 464K init, 8225K bss, 21060K reserved, 16384K cma-reserved, 0K highmem)
[ 0.000000] Virtual kernel memory layout:
[ 0.000000] vector : 0xffff0000 - 0xffff1000 ( 4 kB)
[ 0.000000] fixmap : 0xffc00000 - 0xfff00000 (3072 kB)
[ 0.000000] vmalloc : 0xc8800000 - 0xff000000 ( 872 MB)
[ 0.000000] lowmem : 0xc0000000 - 0xc8000000 ( 128 MB)
[ 0.000000] pkmap : 0xbfe00000 - 0xc0000000 ( 2 MB)
[ 0.000000] modules : 0xbf000000 - 0xbfe00000 ( 14 MB)
[ 0.000000] .text : 0xc0008000 - 0xc09935f0 (9774 kB)
[ 0.000000] .init : 0xc0994000 - 0xc0a08000 ( 464 kB)
[ 0.000000] .data : 0xc0a08000 - 0xc0ae1fd0 ( 872 kB)
[ 0.000000] .bss : 0xc0ae4000 - 0xc12ec688 (8226 kB)
[ 0.000000] Running RCU self tests
[ 0.000000] Hierarchical RCU implementation.
[ 0.000000] RCU lockdep checking is enabled.
[ 0.000000] Additional per-CPU info printed with stalls.
[ 0.000000] RCU restricting CPUs from NR_CPUS=2 to nr_cpu_ids=1.
[ 0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=16, 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
[ 0.000021] sched_clock: 32 bits at 24MHz, resolution 41ns, wraps every 89478484971ns
[ 0.000052] clocksource timer1: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 79635851949 ns
[ 0.000118] OMAP clocksource: timer1 at 24000000 Hz
[ 0.001261] Console: colour dummy device 80x30
[ 0.001339] Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar
[ 0.001352] ... MAX_LOCKDEP_SUBCLASSES: 8
[ 0.001363] ... MAX_LOCK_DEPTH: 48
[ 0.001373] ... MAX_LOCKDEP_KEYS: 8191
[ 0.001384] ... CLASSHASH_SIZE: 4096
[ 0.001393] ... MAX_LOCKDEP_ENTRIES: 32768
[ 0.001404] ... MAX_LOCKDEP_CHAINS: 65536
[ 0.001414] ... CHAINHASH_SIZE: 32768
[ 0.001424] memory used by lock dependency info: 5167 kB
[ 0.001435] per task-struct memory footprint: 1152 bytes
[ 0.001466] Calibrating delay loop... 718.02 BogoMIPS (lpj=3590144)
[ 0.108307] pid_max: default: 32768 minimum: 301
[ 0.108753] Security Framework initialized
[ 0.109015] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.109041] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.113214] Initializing cgroup subsys blkio
[ 0.113271] Initializing cgroup subsys memory
[ 0.113392] Initializing cgroup subsys devices
[ 0.113510] Initializing cgroup subsys freezer
[ 0.113689] Initializing cgroup subsys perf_event
[ 0.113771] CPU: Testing write buffer coherency: ok
[ 0.115776] CPU0: thread -1, cpu 0, socket -1, mpidr 0
[ 0.115920] Setting up static identity map for 0x80008280 - 0x800082f0
[ 0.126396] Brought up 1 CPUs
[ 0.126434] SMP: Total of 1 processors activated (718.02 BogoMIPS).
[ 0.126448] CPU: All CPU(s) started in SVC mode.
[ 0.131751] devtmpfs: initialized
[ 0.178685] VFP support v0.3: implementor 41 architecture 3 part 30 variant c rev 3
[ 0.251639] omap_hwmod: debugss: _wait_target_disable failed
[ 0.308946] clocksource jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[ 0.312216] pinctrl core: initialized pinctrl subsystem
[ 0.319501] NET: Registered protocol family 16
[ 0.327296] DMA: preallocated 256 KiB pool for atomic coherent allocations
[ 0.330401] cpuidle: using governor ladder
[ 0.330444] cpuidle: using governor menu
[ 0.347621] OMAP GPIO hardware version 0.1
[ 0.379407] omap-gpmc 50000000.gpmc: could not find pctldev for node /ocp/l4_wkup@44c00000/scm@210000/pinmux@800/pinmux_nandflash_pins, deferring probe
[ 0.384981] No ATAGs?
[ 0.385022] hw-breakpoint: debug architecture 0x4 unsupported.
[ 0.385802] omap4_sram_init:Unable to allocate sram needed to handle errata I688
[ 0.385826] omap4_sram_init:Unable to get sram pool needed to handle errata I688
[ 0.446811] edma 49000000.edma: TI EDMA DMA engine driver
[ 0.449438] reg-fixed-voltage fixedregulator@1: could not find pctldev for node /ocp/l4_wkup@44c00000/scm@210000/pinmux@800/pinmux_wl12xx_gpio, deferring probe
[ 0.453649] SCSI subsystem initialized
[ 0.455728] usbcore: registered new interface driver usbfs
[ 0.455982] usbcore: registered new interface driver hub
[ 0.456188] usbcore: registered new device driver usb
[ 0.479540] tps65910 0-002d: No interrupt support, no core IRQ
[ 0.614304] omap_i2c 44e0b000.i2c: bus 0 rev0.11 at 100 kHz
[ 0.615013] pps_core: LinuxPPS API ver. 1 registered
[ 0.615032] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <[email protected]>
[ 0.615109] PTP clock support registered
[ 0.620004] Bluetooth: Core ver 2.20
[ 0.620170] NET: Registered protocol family 31
[ 0.620185] Bluetooth: HCI device and connection manager initialized
[ 0.620332] Bluetooth: HCI socket layer initialized
[ 0.620370] Bluetooth: L2CAP socket layer initialized
[ 0.620592] Bluetooth: SCO socket layer initialized
[ 0.624095] Switched to clocksource timer1
[ 0.820693] NET: Registered protocol family 2
[ 0.823356] TCP established hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.823542] TCP bind hash table entries: 1024 (order: 3, 36864 bytes)
[ 0.824172] TCP: Hash tables configured (established 1024 bind 1024)
[ 0.824497] UDP hash table entries: 256 (order: 2, 20480 bytes)
[ 0.824757] UDP-Lite hash table entries: 256 (order: 2, 20480 bytes)
[ 0.825968] NET: Registered protocol family 1
[ 0.828351] RPC: Registered named UNIX socket transport module.
[ 0.828381] RPC: Registered udp transport module.
[ 0.828394] RPC: Registered tcp transport module.
[ 0.828407] RPC: Registered tcp NFSv4.1 backchannel transport module.
[ 0.831337] CPU PMU: Failed to parse /pmu/interrupt-affinity[0]
[ 0.831463] hw perfevents: enabled with armv7_cortex_a8 PMU driver, 5 counters available
[ 0.838002] futex hash table entries: 256 (order: 2, 16384 bytes)
[ 0.838313] audit: initializing netlink subsys (disabled)
[ 0.838639] audit: type=2000 audit(0.830:1): initialized
[ 0.845262] VFS: Disk quotas dquot_6.6.0
[ 0.845456] VFS: Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
[ 0.847891] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[ 0.849171] NFS: Registering the id_resolver key type
[ 0.849744] Key type id_resolver registered
[ 0.849764] Key type id_legacy registered
[ 0.860204] io scheduler noop registered
[ 0.860252] io scheduler deadline registered
[ 0.860327] io scheduler cfq registered (default)
[ 0.863209] pinctrl-single 44e10800.pinmux: 142 pins at pa f9e10800 size 568
[ 0.867560] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
[ 0.876098] omap_uart 44e09000.serial: no wakeirq for uart0
[ 0.877001] 44e09000.serial: ttyO0 at MMIO 0x44e09000 (irq = 158, base_baud = 3000000) is a OMAP UART0
[ 0.879864] omap_uart 48022000.serial: no wakeirq for uart1
[ 0.880322] 48022000.serial: ttyO1 at MMIO 0x48022000 (irq = 159, base_baud = 3000000) is a OMAP UART1
[ 0.882065] omap_uart 481a6000.serial: no wakeirq for uart3
[ 0.882510] 481a6000.serial: ttyO3 at MMIO 0x481a6000 (irq = 160, base_baud = 3000000) is a OMAP UART3
[ 1.699898] console [ttyO3] enabled
[ 1.705757] omap_uart 481aa000.serial: no wakeirq for uart5
[ 1.712068] 481aa000.serial: ttyO5 at MMIO 0x481aa000 (irq = 161, base_baud = 3000000) is a OMAP UART5
[ 1.760738] brd: module loaded
[ 1.785830] loop: module loaded
[ 1.789963] (stk) :sysfs entries created
[ 1.800178] mtdoops: mtd device (mtddev=name/number) must be supplied
[ 1.874092] davinci_mdio 4a101000.mdio: davinci mdio revision 1.6
[ 1.880499] davinci_mdio 4a101000.mdio: detected phy mask fffffff5
[ 1.894287] libphy: 4a101000.mdio: probed
[ 1.898524] davinci_mdio 4a101000.mdio: phy[1]: device 4a101000.mdio:01, driver unknown
[ 1.906962] davinci_mdio 4a101000.mdio: phy[3]: device 4a101000.mdio:03, driver unknown
[ 1.917029] cpsw 4a100000.ethernet: Detected MACID = d0:ff:50:ab:2d:b7
[ 1.927796] PPP generic driver version 2.4.2
[ 1.933714] PPP BSD Compression module registered
[ 1.938845] PPP Deflate Compression module registered
[ 1.945366] usbcore: registered new interface driver cdc_acm
[ 1.951296] cdc_acm: USB Abstract Control Model driver for USB modems and ISDN adapters
[ 1.959997] usbcore: registered new interface driver usb-storage
[ 1.970707] 47401300.usb-phy supply vcc not found, using dummy regulator
[ 1.983582] musb-hdrc musb-hdrc.0.auto: Failed to request rx1.
[ 1.990461] musb-hdrc musb-hdrc.0.auto: musb_init_controller failed with status -517
[ 2.000788] 47401b00.usb-phy supply vcc not found, using dummy regulator
[ 2.012019] musb-hdrc musb-hdrc.1.auto: Failed to request rx1.
[ 2.018436] musb-hdrc musb-hdrc.1.auto: musb_init_controller failed with status -517
[ 2.055667] mousedev: PS/2 mouse device common for all mice
[ 2.062865] i2c /dev entries driver
[ 2.072753] omap_wdt: OMAP Watchdog Timer Rev 0x01: initial timeout 60 sec
[ 2.082969] omap_hsmmc 48060000.mmc: Got CD GPIO
[ 2.089408] vmmc: supplied by vbat
[ 2.139221] ledtrig-cpu: registered to indicate activity on CPUs
[ 2.147462] oprofile: using arm/armv7
[ 2.151464] Netfilter messages via NETLINK v0.30.
[ 2.157069] nf_conntrack version 0.5.0 (1686 buckets, 6744 max)
[ 2.164144] ctnetlink v0.93: registering with nfnetlink.
[ 2.170652] ipip: IPv4 over IPv4 tunneling driver
[ 2.179323] ip_tables: (C) 2000-2006 Netfilter Core Team
[ 2.185436] arp_tables: (C) 2002 David S. Miller
[ 2.190642] Initializing XFRM netlink socket
[ 2.195447] NET: Registered protocol family 17
[ 2.200200] NET: Registered protocol family 15
[ 2.207048] Bluetooth: RFCOMM TTY layer initialized
[ 2.212284] Bluetooth: RFCOMM socket layer initialized
[ 2.217831] Bluetooth: RFCOMM ver 1.11
[ 2.221818] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 2.227427] Bluetooth: BNEP filters: protocol multicast
[ 2.232927] Bluetooth: BNEP socket layer initialized
[ 2.238179] Bluetooth: HIDP (Human Interface Emulation) ver 1.2
[ 2.244432] Bluetooth: HIDP socket layer initialized
[ 2.249798] BT WLAN Gpio value is :10
[ 2.254432] WD Enable Gpio value is :114
[ 2.258976] WD Tick Gpio value is :115
[ 2.263340] BT_WLAN Gpio value is :10
[ 2.267239] WL1271: BT/WLAN Enable
[ 2.284032] Voltage translator init complete
[ 2.302427] mmc0: host does not support reading read-only switch, assuming write-enable
[ 2.310942] WD: Enable
[ 2.313464] WD: TICK
[ 2.317180] Key type dns_resolver registered
[ 2.322818] omap_voltage_late_init: Voltage driver support not added
[ 2.329621] sr_dev_init: No voltage domain specified for smartreflex0. Cannot initialize
[ 2.338138] sr_dev_init: No voltage domain specified for smartreflex1. Cannot initialize
[ 2.348688] ThumbEE CPU extension supported.
[ 2.353214] Registering SWP/SWPB emulation handler
[ 2.358356] SmartReflex Class3 initialized
[ 2.364460] mmc0: new high speed SDHC card at address 0001
[ 2.373404] mmcblk0: mmc0:0001 SD32G 29.3 GiB
[ 2.384627] mmcblk0: p1 p2
[ 2.399807] omap-gpmc 50000000.gpmc: GPMC revision 6.0
[ 2.405715] gpmc_mem_init: disabling cs 0 mapped at 0x0-0x1000000
[ 2.416508] nand: device found, Manufacturer ID: 0x01, Chip ID: 0xf1
[ 2.423165] nand: AMD/Spansion S34ML01G2
[ 2.427383] nand: 128 MiB, SLC, erase size: 128 KiB, page size: 2048, OOB size: 64
[ 2.435458] nand: using OMAP_ECC_BCH4_CODE_HW ECC scheme
[ 2.441305] 8 ofpart partitions found on MTD device 8000000.nand
[ 2.447640] Creating 8 MTD partitions on "8000000.nand":
[ 2.453212] 0x000000000000-0x000000020000 : "SPL"
[ 2.467798] 0x000000020000-0x000000040000 : "SPL.backup1"
[ 2.478062] 0x000000040000-0x000000060000 : "SPL.backup2"
[ 2.488203] 0x000000060000-0x000000080000 : "SPL.backup3"
[ 2.498676] 0x000000080000-0x000000260000 : "U-Boot"
[ 2.508970] 0x000000260000-0x000000280000 : "U-Boot Env"
[ 2.518872] 0x000000280000-0x000000780000 : "Kernel"
[ 2.531256] 0x000000780000-0x000008000000 : "File System"
[ 2.610135] musb-hdrc musb-hdrc.0.auto: MUSB HDRC host driver
[ 2.617210] musb-hdrc musb-hdrc.0.auto: new USB bus registered, assigned bus number 1
[ 2.628376] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
[ 2.635588] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 2.643149] usb usb1: Product: MUSB HDRC host driver
[ 2.648380] usb usb1: Manufacturer: Linux 4.1.18-ts-armv7l-crown-1.0 musb-hcd
[ 2.655881] usb usb1: SerialNumber: musb-hdrc.0.auto
[ 2.667430] hub 1-0:1.0: USB hub found
[ 2.672216] hub 1-0:1.0: 1 port detected
[ 2.692454] musb-hdrc musb-hdrc.1.auto: MUSB HDRC host driver
[ 2.698661] musb-hdrc musb-hdrc.1.auto: new USB bus registered, assigned bus number 2
[ 2.708020] usb usb2: New USB device found, idVendor=1d6b, idProduct=0002
[ 2.715198] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 2.722758] usb usb2: Product: MUSB HDRC host driver
[ 2.727986] usb usb2: Manufacturer: Linux 4.1.18-ts-armv7l-crown-1.0 musb-hcd
[ 2.735499] usb usb2: SerialNumber: musb-hdrc.1.auto
[ 2.743553] hub 2-0:1.0: USB hub found
[ 2.747851] hub 2-0:1.0: 1 port detected
[ 2.877465] hctosys: unable to open rtc device (rtc0)
[ 2.882786] sr_init: No PMIC hook to init smartreflex
[ 2.888543] sr_init: platform driver register failed for SR
[ 2.930249] VFS: Mounted root (ramfs filesystem) readonly on device 0:15.
[ 2.937980] devtmpfs: error mounting -2
[ 2.943047] Freeing unused kernel memory: 464K (c0994000 - c0a08000)
[ 2.950460] Kernel panic - not syncing: No working init found. Try passing init= option to kernel. See Linux Documentation/init.txt for guidance.
[ 2.964386] ---[ end Kernel panic - not syncing: No working init found. Try passing init= option to kernel. See Linux Documentation/init.txt for guidance.
[ 79.333959] random: nonblocking pool is initialized
Como você pode ver, o kernel não consegue encontrar o init no initramfs. Alguma ideia do porquê?
O kernel é 4.1.18 e o u-boot é 2013.09.
Obrigado
Editar:
Responder a perguntas do jc__:
1.
Não, nenhum kernel muda na árvore de dispositivos
2.
Eu tentei definir initrd=/dev/ram0 e recebo o mesmo erro.
Eu também tentei especificar o init como init=/init e ver o seguinte erro:
[ 2.953050] Freeing unused kernel memory: 464K (c0994000 - c0a08000)
[ 2.960261] Kernel panic - not syncing: Requested init /init failed (error -2).
[ 2.968092] ---[ end Kernel panic - not syncing: Requested init /init failed (error -2).
3.
Estou usando um arquivo cpio, então initramfs, mas estou tentando carregá-lo separadamente (não faz parte da imagem do kernel) e não tenho certeza se um initramfs pode funcionar dessa maneira. Algo que encontrei fez parecer que isso é possível.
Meu sistema de arquivos initramfs.cpio contém /dev .
Estes módulos estão atualmente construídos no kernel.
4.
Eu não estou incluindo um initramfs na imagem do kernel, então deve incluir apenas o padrão.
CONFIG_BLK_DEV_INITRD=y
CONFIG_INITRAMFS_SOURCE=""
CONFIG_BLK_DEV_RAM=y
CONFIG_BLK_DEV_RAM_COUNT=16
CONFIG_BLK_DEV_RAM_SIZE=16384
5.
Eu poderia incluí-lo no meu kernel, mas exigiria trabalho adicional. O kernel é construído pelo sistema de construção do Timesys Factory, e o initramfs.cpio é construído mais tarde.
Responder a sourcejedi
Eu tentei mudar isso para isso:
# setenv bootargs console=${console} root=/dev/ram0 init=/init
E obtenha:
[ 2.882766] sr_init: No PMIC hook to init smartreflex
[ 2.888519] sr_init: platform driver register failed for SR
[ 2.930847] omap_hsmmc 481d8000.mmc: card claims to support voltages below defined range
[ 2.946830] List of all partitions:
[ 2.950696] 0100 16384 ram0 (driver?)
[ 2.955763] 0101 16384 ram1 (driver?)
[ 2.960639] 0102 16384 ram2 (driver?)
[ 2.965564] 0103 16384 ram3 (driver?)
[ 2.970442] 0104 16384 ram4 (driver?)
[ 2.975364] 0105 16384 ram5 (driver?)
[ 2.980239] 0106 16384 ram6 (driver?)
[ 2.985153] 0107 16384 ram7 (driver?)
[ 2.990029] 0108 16384 ram8 (driver?)
[ 2.994937] 0109 16384 ram9 (driver?)
[ 2.999791] 010a 16384 ram10 (driver?)
[ 3.004781] 010b 16384 ram11 (driver?)
[ 3.009725] 010c 16384 ram12 (driver?)
[ 3.014700] 010d 16384 ram13 (driver?)
[ 3.019642] 010e 16384 ram14 (driver?)
[ 3.024616] 010f 16384 ram15 (driver?)
[ 3.029577] b300 30707712 mmcblk0 driver: mmcblk
[ 3.035191] b301 9216 mmcblk0p1 00011b5e-01
[ 3.040769] b302 440320 mmcblk0p2 00011b5e-02
[ 3.046421] 1f00 128 mtdblock0 (driver?)
[ 3.051727] 1f01 128 mtdblock1 (driver?)
[ 3.057074] 1f02 128 mtdblock2 (driver?)
[ 3.062380] 1f03 128 mtdblock3 (driver?)
[ 3.067723] 1f04 1920 mtdblock4 (driver?)
[ 3.073030] 1f05 128 mtdblock5 (driver?)
[ 3.078369] 1f06 5120 mtdblock6 (driver?)
[ 3.083676] 1f07 123392 mtdblock7 (driver?)
[ 3.089006] No filesystem could mount root, tried: ext3 ext2 ext4 cramfs squashfs vfat msdos
[ 3.098220] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(1,0)
[ 3.107068] ---[ end Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(1,0)
A mesma coisa se eu alterá-lo para:
# setenv bootargs console=${console} root=/dev/ram0 initrd=/dev/ram0 init=/init
Edit2:
Tentei:
# setenv bootargs console=${console} root=/dev/ram0 initrd=0x85000000,2M
E veja o mesmo erro, exceto que agora obtenho
[ 2.978095] RAMDISK: Couldn't find valid RAM disk image starting at 0.
[ 2.992086] List of all partitions:
[ 2.996226] 0100 16384 ram0 (driver?)
[ 3.001097] 0101 16384 ram1 (driver?)
[ 3.006041] 0102 16384 ram2 (driver?)
[ 3.010895] 0103 16384 ram3 (driver?)
Parece que o kernel não vê o initramfs em /dev/ram0 . Isso poderia estar errado? Quando o u-boot carrega o uImage e o uInitrd na memória, como /dev/ram0 está vinculado a esse endereço, 0x85000000?
Editar 3:
Eu criei meu initramfs.cpio no meu kernel e consegui ver minha mensagem de eco. Então, meu initramfs é válido, mas não tenho certeza do que estou errado ao tentar carregá-lo externamente.