系统连Ramdisk也进不去了。。。。。。
原来这个配置文件下的文件系统能正常的。相同的参数，突然就不正常了。不知道哪里出了问题。。。。。。。
U-Boot SPL 2017.01-rc2-00073-gdd6e874-dirty (Sep 12 2018 - 18:06:00)
DRAM: 64 MiB
Trying to boot from sunxi SPI
U-Boot 2017.01-rc2-00073-gdd6e874-dirty (Sep 12 2018 - 18:06:00 -0700) Allwinner Technology
CPU: Allwinner V3s (SUN8I 1681)
Model: Lichee Pi Zero
DRAM: 64 MiB
MMC: SUNXI SD/MMC: 0
SF: Detected w25q128bv with page size 256 Bytes, erase size 4 KiB, total 16 MiB
*** Warning - bad CRC, using default environment
Setting up a 800x480 lcd console (overscan 0x0)
dotclock: 33000kHz = 33000kHz: (1 * 3MHz * 66) / 6
In: serial@01c28000
Out: serial@01c28000
Err: serial@01c28000
U-Boot 2017.01-rc2-00073-gdd6e874-dirty (Sep 12 2018 - 18:06:00 -0700) Allwinner Technology
CPU: Allwinner V3s (SUN8I 1681)
Model: Lichee Pi Zero
DRAM: 64 MiB
MMC: SUNXI SD/MMC: 0
SF: Detected w25q128bv with page size 256 Bytes, erase size 4 KiB, total 16 MiB
*** Warning - bad CRC, using default environment
Setting up a 800x480 lcd console (overscan 0x0)
dotclock: 33000kHz = 33000kHz: (1 * 3MHz * 66) / 6
In: serial@01c28000
Out: serial@01c28000
Err: serial@01c28000
Net: No ethernet found.
starting USB...
No controllers found
Hit any key to stop autoboot: 0
SF: Detected w25q128bv with page size 256 Bytes, erase size 4 KiB, total 16 MiB
device 0 offset 0x100000, size 0x10000
SF: 65536 bytes @ 0x100000 Read: OK
device 0 offset 0x110000, size 0x900000
SF: 9437184 bytes @ 0x110000 Read: OK
## Flattened Device Tree blob at 41a10000
Booting using the fdt blob at 0x41a10000
Loading Device Tree to 42dfa000, end 42dff206 ... OK
Starting kernel ...
[ 0.000000] Booting Linux on physical CPU 0x0
[ 0.000000] Linux version 4.13.16-licheepi-zero+ (pqfeng@ubuntu) (gcc version 4.9.2 20140904 (prerelease) (crosstool-NG linaro-1.13.1-4.9-2014.09 - Linaro GCC 4.9-2014.09)) #17 SMP Wed Sep 12 18:48:37 PDT 2018
[ 0.000000] CPU: ARMv7 Processor [410fc075] revision 5 (ARMv7), cr=10c5387d
[ 0.000000] CPU: div instructions available: patching division code
[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
[ 0.000000] OF: fdt: Machine model: Lichee Pi Zero
[ 0.000000] Memory policy: Data cache writealloc
[ 0.000000] percpu: Embedded 16 pages/cpu @c3de8000 s33920 r8192 d23424 u65536
[ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 15883
[ 0.000000] Kernel command line: console=ttyS0,115200 earlyprintk panic=5 rootwait mtdparts=spi32766.0:1M(uboot)ro,64k(dtb)ro,9M(kernel)ro,-(rootfs) root=/dev/ram0 ro
[ 0.000000] PID hash table entries: 256 (order: -2, 1024 bytes)
[ 0.000000] Dentry cache hash table entries: 8192 (order: 3, 32768 bytes)
[ 0.000000] Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)
[ 0.000000] Memory: 49496K/64036K available (6144K kernel code, 217K rwdata, 1436K rodata, 5120K init, 262K bss, 14540K reserved, 0K 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 : 0xc4000000 - 0xff800000 ( 952 MB)
[ 0.000000] lowmem : 0xc0000000 - 0xc3e89000 ( 62 MB)
[ 0.000000] pkmap : 0xbfe00000 - 0xc0000000 ( 2 MB)
[ 0.000000] modules : 0xbf000000 - 0xbfe00000 ( 14 MB)
[ 0.000000] .text : 0xc0008000 - 0xc0700000 (7136 kB)
[ 0.000000] .init : 0xc0900000 - 0xc0e00000 (5120 kB)
[ 0.000000] .data : 0xc0e00000 - 0xc0e367c0 ( 218 kB)
[ 0.000000] .bss : 0xc0e3d868 - 0xc0e7f1fc ( 263 kB)
[ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[ 0.000000] Hierarchical RCU implementation.
[ 0.000000] RCU event tracing is enabled.
[ 0.000000] RCU restricting CPUs from NR_CPUS=8 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, preallocated irqs: 16
[ 0.000000] arch_timer: cp15 timer(s) running at 24.00MHz (virt).
[ 0.000000] clocksource: arch_sys_counter: mask: 0xffffffffffffff max_cycles: 0x588fe9dc0, max_idle_ns: 440795202592 ns
[ 0.000007] sched_clock: 56 bits at 24MHz, resolution 41ns, wraps every 4398046511097ns
[ 0.000020] Switching to timer-based delay loop, resolution 41ns
[ 0.000168] clocksource: timer: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 79635851949 ns
[ 0.000387] Console: colour dummy device 80x30
[ 0.000424] Calibrating delay loop (skipped), value calculated using timer frequency.. 48.00 BogoMIPS (lpj=240000)
[ 0.000439] pid_max: default: 32768 minimum: 301
[ 0.000575] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.000591] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.001199] CPU: Testing write buffer coherency: ok
[ 0.001584] /cpus/cpu@0 missing clock-frequency property
[ 0.001610] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000
[ 0.002047] Setting up static identity map for 0x40100000 - 0x40100060
[ 0.002235] Hierarchical SRCU implementation.
[ 0.002736] smp: Bringing up secondary CPUs ...
[ 0.002753] smp: Brought up 1 node, 1 CPU
[ 0.002761] SMP: Total of 1 processors activated (48.00 BogoMIPS).
[ 0.002768] CPU: All CPU(s) started in SVC mode.
[ 0.003544] devtmpfs: initialized
[ 0.006022] VFP support v0.3: implementor 41 architecture 2 part 30 variant 7 rev 5
[ 0.006321] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[ 0.006352] futex hash table entries: 256 (order: 2, 16384 bytes)
[ 0.006520] pinctrl core: initialized pinctrl subsystem
[ 0.007389] random: get_random_u32 called from bucket_table_alloc+0xf0/0x240 with crng_init=0
[ 0.007523] NET: Registered protocol family 16
[ 0.007993] DMA: preallocated 256 KiB pool for atomic coherent allocations
[ 0.009086] hw-breakpoint: found 5 (+1 reserved) breakpoint and 4 watchpoint registers.
[ 0.009104] hw-breakpoint: maximum watchpoint size is 8 bytes.
[ 0.020614] SCSI subsystem initialized
[ 0.020894] usbcore: registered new interface driver usbfs
[ 0.020962] usbcore: registered new interface driver hub
[ 0.021053] usbcore: registered new device driver usb
[ 0.021279] pps_core: LinuxPPS API ver. 1 registered
[ 0.021289] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it>
[ 0.021310] PTP clock support registered
[ 0.021541] Advanced Linux Sound Architecture Driver Initialized.
[ 0.023305] clocksource: Switched to clocksource arch_sys_counter
[ 0.024172] simple-framebuffer 43e89000.framebuffer: framebuffer at 0x43e89000, 0x177000 bytes, mapped to 0xc4080000
[ 0.024192] simple-framebuffer 43e89000.framebuffer: format=x8r8g8b8, mode=800x480x32, linelength=3200
[ 0.031048] Console: switching to colour frame buffer device 100x30
[ 0.037190] simple-framebuffer 43e89000.framebuffer: fb0: simplefb registered!
[ 0.047012] NET: Registered protocol family 2
[ 0.047624] TCP established hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.047659] TCP bind hash table entries: 1024 (order: 1, 8192 bytes)
[ 0.047683] TCP: Hash tables configured (established 1024 bind 1024)
[ 0.047828] UDP hash table entries: 256 (order: 1, 8192 bytes)
[ 0.047877] UDP-Lite hash table entries: 256 (order: 1, 8192 bytes)
[ 0.048100] NET: Registered protocol family 1
[ 0.048701] RPC: Registered named UNIX socket transport module.
[ 0.048725] RPC: Registered udp transport module.
[ 0.048731] RPC: Registered tcp transport module.
[ 0.048737] RPC: Registered tcp NFSv4.1 backchannel transport module.
[ 0.380184] workingset: timestamp_bits=30 max_order=14 bucket_order=0
[ 0.389321] NFS: Registering the id_resolver key type
[ 0.389378] Key type id_resolver registered
[ 0.389386] Key type id_legacy registered
[ 0.390366] random: fast init done
[ 0.393194] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 249)
[ 0.393216] io scheduler noop registered
[ 0.393224] io scheduler deadline registered
[ 0.393602] io scheduler cfq registered (default)
[ 0.393616] io scheduler mq-deadline registered
[ 0.393624] io scheduler kyber registered
[ 0.398105] sun8i-v3s-pinctrl 1c20800.pinctrl: initialized sunXi PIO driver
[ 0.464657] Serial: 8250/16550 driver, 8 ports, IRQ sharing disabled
[ 0.468038] console [ttyS0] disabled
[ 0.488319] 1c28000.serial: ttyS0 at MMIO 0x1c28000 (irq = 31, base_baud = 1500000) is a U6_16550A
[ 1.107409] console [ttyS0] enabled
[ 1.114802] m25p80 spi32766.0: w25q128 (16384 Kbytes)
[ 1.119888] spi32766.0: parser cmdlinepart: 4
[ 1.124351] 4 cmdlinepart partitions found on MTD device spi32766.0
[ 1.130613] Creating 4 MTD partitions on "spi32766.0":
[ 1.135785] 0x000000000000-0x000000100000 : "uboot"
[ 1.141312] 0x000000100000-0x000000110000 : "dtb"
[ 1.146479] 0x000000110000-0x000000a10000 : "kernel"
[ 1.151787] 0x000000a10000-0x000001000000 : "rootfs"
[ 1.157565] libphy: Fixed MDIO Bus: probed
[ 1.161973] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[ 1.168582] ehci-platform: EHCI generic platform driver
[ 1.173925] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[ 1.180136] ohci-platform: OHCI generic platform driver
[ 1.185897] udc-core: couldn't find an available UDC - added [g_cdc] to list of pending drivers
[ 1.195497] sun6i-rtc 1c20400.rtc: rtc core: registered rtc-sun6i as rtc0
[ 1.202291] sun6i-rtc 1c20400.rtc: RTC enabled
[ 1.206901] i2c /dev entries driver
[ 1.211711] input: ns2009_ts as /devices/platform/soc/1c2ac00.i2c/i2c-0/0-0048/input/input0
[ 1.221139] sunxi-wdt 1c20ca0.watchdog: Watchdog enabled (timeout=16 sec, nowayout=0)
[ 1.283347] sunxi-mmc 1c0f000.mmc: base:0xc405f000 irq:23
[ 1.289706] usbcore: registered new interface driver usbhid
[ 1.295373] usbhid: USB HID core driver
[ 1.301302] NET: Registered protocol family 17
[ 1.305992] Key type dns_resolver registered
[ 1.310405] Registering SWP/SWPB emulation handler
[ 1.321722] usb_phy_generic usb_phy_generic.0.auto: usb_phy_generic.0.auto supply vcc not found, using dummy regulator
[ 1.333172] musb-hdrc musb-hdrc.1.auto: MUSB HDRC host driver
[ 1.339031] musb-hdrc musb-hdrc.1.auto: new USB bus registered, assigned bus number 1
[ 1.350259] hub 1-0:1.0: USB hub found
[ 1.354246] hub 1-0:1.0: 1 port detected
[ 1.359427] using random self ethernet address
[ 1.364005] using random host ethernet address
[ 1.369521] usb0: HOST MAC 1e:70:f5:9e:da:04
[ 1.374000] usb0: MAC 9a:9f:1c:a2:b6:1a
[ 1.377905] g_cdc gadget: CDC Composite Gadget, version: King Kamehameha Day 2008
[ 1.385432] g_cdc gadget: g_cdc ready
[ 1.389445] sun6i-rtc 1c20400.rtc: setting system clock to 1970-01-01 00:00:23 UTC (23)
[ 1.397742] vcc3v0: disabling
[ 1.400720] vcc5v0: disabling
[ 1.403743] ALSA device list:
[ 1.406709] No soundcards found.
[ 1.410900] Waiting for root device /dev/ram0...离线
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看下我的这个, 加 rdinit=/init:
console=ttySl,115200 earlyprintk panic=5 rootwait mtdparts=spi32766.0:960k(uboot),64k(dtb),1M(background),1M(animation),8M(kernel),-(rootfs) root=/dev/ram0 rdinit=/init vt.global_cursor_default=0
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去掉也，依然没有变化 。ro 是只读，前面三个文件系统都用了ro
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用你的最新参数依然没有变化。。。。。吐血了
离线
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奇怪， 我用 initrd ramfs 也是这样， 输入回车键有反应， 但是就是没有 # :
[ 1.700700] vcc5v0: disabling
[ 1.703677] ALSA device list:
[ 1.706704] #0: V3s Audio Codec
[ 1.710871] Waiting for root device /dev/ram0...
[ 1.716577] mmc1: queuing unknown CIS tuple 0x01 (3 bytes)
[ 1.729164] mmc1: queuing unknown CIS tuple 0x1a (5 bytes)
[ 1.737730] mmc1: queuing unknown CIS tuple 0x1b (8 bytes)
[ 1.745082] mmc1: queuing unknown CIS tuple 0x80 (1 bytes)
[ 1.750690] mmc1: queuing unknown CIS tuple 0x81 (1 bytes)
[ 1.756244] mmc1: queuing unknown CIS tuple 0x82 (1 bytes)
[ 1.761755] mmc1: new high speed SDIO card at address 0001
[ 212.885618] random: crng init done换一个文件系统就可以启动到shell， 什么都没变。
离线
参考1: https://github.com/torvalds/linux/blob/master/init/do_mounts.c
参考2: https://github.com/torvalds/linux/blob/master/init/main.c
main.c:
static int __init rdinit_setup(char *str)
{
unsigned int i;
ramdisk_execute_command = str;
/* See "auto" comment in init_setup */
for (i = 1; i < MAX_INIT_ARGS; i++)
argv_init[i] = NULL;
return 1;
}
__setup("rdinit=", rdinit_setup);从上面可以看出, 如果挂载的是 initrd 文件系统, 那么 bootargs 需要传递 rdinit 环境变量,
main.c
if (!ramdisk_execute_command)
ramdisk_execute_command = "/init";
if (ksys_access((const char __user *)
ramdisk_execute_command, 0) != 0) {
ramdisk_execute_command = NULL;
prepare_namespace();
}如果 bootargs 没有找到 rdinit 环境变量, 那么就强行设置为 /init 并作为第一个进程跑,
do_mounts.c
/*
* Prepare the namespace - decide what/where to mount, load ramdisks, etc.
*/
void __init prepare_namespace(void)
{
.............
/* wait for any asynchronous scanning to complete */
if ((ROOT_DEV == 0) && root_wait) {
printk(KERN_INFO "Waiting for root device %s...\n",
saved_root_name);
while (driver_probe_done() != 0 ||
(ROOT_DEV = name_to_dev_t(saved_root_name)) == 0)
msleep(5);
async_synchronize_full();
}
.............
}如果 rdinit=没有设置 和 initrd 文件系统里面没有一找到/init 文件,
那么文件系统初始化就挂了， 并且抛出 Waiting for root device /dev/ram0 这个错误
在线
奇怪， 我用 initrd ramfs 也是这样， 输入回车键有反应， 但是就是没有 # :
[ 1.700700] vcc5v0: disabling [ 1.703677] ALSA device list: [ 1.706704] #0: V3s Audio Codec [ 1.710871] Waiting for root device /dev/ram0... [ 1.716577] mmc1: queuing unknown CIS tuple 0x01 (3 bytes) [ 1.729164] mmc1: queuing unknown CIS tuple 0x1a (5 bytes) [ 1.737730] mmc1: queuing unknown CIS tuple 0x1b (8 bytes) [ 1.745082] mmc1: queuing unknown CIS tuple 0x80 (1 bytes) [ 1.750690] mmc1: queuing unknown CIS tuple 0x81 (1 bytes) [ 1.756244] mmc1: queuing unknown CIS tuple 0x82 (1 bytes) [ 1.761755] mmc1: new high speed SDIO card at address 0001 [ 212.885618] random: crng init done换一个文件系统就可以启动到shell， 什么都没变。
Waiting for root device /dev/ram0...
所以解决这个不能进入 shell 的问题， 你可以有两种解决方案:
1. 在 bootargs 加上 rdinit=/linuxrc
2. 根文件系统执行复制: cp linuxrc init -rf
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