ssp_read [num_reg] [dev_width] [reg_width] [data_width] 一般SPI不是通过片选来决定的么，这里的dev_addr到底是什么，如何确定呢？

是这样，买的开发板，他们提供的bin文件打包了uboot kernel fs。 我按照sdk的说明文档，自己生成了uboot kernel fs，板子用的spi flash。 下面是启动的log，帮忙分析下大概什么原因呢，硬件肯定是没问题的。 [code]## Booting kernel from Legacy Image at 82000000 ...    Image Name:   Linux-3.4.35    Image Type:   ARM Linux Kernel Image (uncompressed)    Data Size:    2942664 Bytes = 2.8 MiB    Load Address: 80008000    Entry Point:  80008000    Loading Kernel Image ... OK OK Starting kernel ... Uncompressing Linux... done, booting the kernel. Booting Linux on physical CPU 0 Linux version 3.4.35 (root@debian) (gcc version 4.8.3 20131202 (prerelease) (Hisilicon_v400) ) #1 Fri Feb 5 14:45:59 CST 2016 CPU: ARMv7 Processor [410fc075] revision 5 (ARMv7), cr=10c53c7d CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache Machine: hi3516a Memory policy: ECC disabled, Data cache writeback Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 16256 Kernel command line: mem=64M console=ttyAMA0,115200 root=/dev/mtdblock2 rootfstype=jffs2 mtdparts=hi_sfc:1M(boot),3M(kernel),12M(rootfs) PID hash table entries: 256 (order: -2, 1024 bytes) Dentry cache hash table entries: 8192 (order: 3, 32768 bytes) Inode-cache hash table entries: 4096 (order: 2, 16384 bytes) Memory: 64MB = 64MB total Memory: 59152k/59152k available, 6384k reserved, 0K highmem Virtual kernel memory layout:     vector  : 0xffff0000 - 0xffff1000   (   4 kB)     fixmap  : 0xfff00000 - 0xfffe0000   ( 896 kB)     vmalloc : 0xc4800000 - 0xff000000   ( 936 MB)     lowmem  : 0xc0000000 - 0xc4000000   (  64 MB)     modules : 0xbf000000 - 0xc0000000   (  16 MB)       .text : 0xc0008000 - 0xc0536000   (5304 kB)       .init : 0xc0536000 - 0xc0557ddc   ( 136 kB)       .data : 0xc0558000 - 0xc0584b80   ( 179 kB)        .bss : 0xc0584ba4 - 0xc05a3778   ( 123 kB) SLUB: Genslabs=11, HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1 NR_IRQS:128 sched_clock: 32 bits at 49MHz, resolution 20ns, wraps every 86767ms Console: colour dummy device 80x30 Calibrating delay loop... 1196.85 BogoMIPS (lpj=5984256) pid_max: default: 32768 minimum: 301 Mount-cache hash table entries: 512 Initializing cgroup subsys freezer CPU: Testing write buffer coherency: ok Setting up static identity map for 0x8040d568 - 0x8040d5c0 dummy: NET: Registered protocol family 16 Serial: AMBA PL011 UART driver uart:0: ttyAMA0 at MMIO 0x20080000 (irq = 40) is a PL011 rev2 console [ttyAMA0] enabled uart:1: ttyAMA1 at MMIO 0x20090000 (irq = 41) is a PL011 rev2 bio: create slab at 0 SCSI subsystem initialized hi-spi-master hi-spi-master.0: with 1 chip select slaves attached hi-spi-master hi-spi-master.1: with 3 chip select slaves attached usbcore: registered new interface driver usbfs usbcore: registered new interface driver hub usbcore: registered new device driver usb Switching to clocksource timer0 NET: Registered protocol family 2 IP route cache hash table entries: 1024 (order: 0, 4096 bytes) TCP established hash table entries: 2048 (order: 2, 16384 bytes) TCP bind hash table entries: 2048 (order: 1, 8192 bytes) TCP: Hash tables configured (established 2048 bind 2048) TCP: reno registered UDP hash table entries: 256 (order: 0, 4096 bytes) UDP-Lite hash table entries: 256 (order: 0, 4096 bytes) NET: Registered protocol family 1 RPC: Registered named UNIX socket transport module. RPC: Registered udp transport module. RPC: Registered tcp transport module. RPC: Registered tcp NFSv4.1 backchannel transport module. VFS: Disk quotas dquot_6.5.2 Dquot-cache hash table entries: 1024 (order 0, 4096 bytes) squashfs: version 4.0 (2009/01/31) Phillip Lougher NFS: Registering the id_resolver key type jffs2: version 2.2. (NAND) © 2001-2006 Red Hat, Inc. fuse init (API version 7.18) SGI XFS with security attributes, large block/inode numbers, no debug enabled msgmni has been set to 115 Block layer SCSI generic (bsg) driver version 0.4 loaded (major 254) io scheduler noop registered io scheduler deadline registered (default) io scheduler cfq registered brd: module loaded Found SPI Nand Flash Controller v100. SPI Nand ID Table Version 1.3 SPI Nand : Manufacturer ID[0x0] No NAND device found Higmac dma_sg_phy: 0x839c0000 higmac_mdio_bus: probed ETH0: rgmii, phy_addr=1, mii_name=mdio0 ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver hiusb-ehci hiusb-ehci.0: HIUSB EHCI hiusb-ehci hiusb-ehci.0: new USB bus registered, assigned bus number 1 hiusb-ehci hiusb-ehci.0: irq 53, io mem 0x100b0000 hiusb-ehci hiusb-ehci.0: USB 0.0 started, EHCI 1.00 hub 1-0:1.0: USB hub found hub 1-0:1.0: 1 port detected ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver hiusb-ohci hiusb-ohci.0: HIUSB OHCI hiusb-ohci hiusb-ohci.0: new USB bus registered, assigned bus number 2 hiusb-ohci hiusb-ohci.0: irq 54, io mem 0x100a0000 hub 2-0:1.0: USB hub found hub 2-0:1.0: 1 port detected Initializing USB Mass Storage driver... usbcore: registered new interface driver usb-storage USB Mass Storage support registered. mousedev: PS/2 mouse device common for all mice i2c /dev entries driver hisi_i2c hisi_i2c.0: Hisilicon [i2c-0] probed! hisi_i2c hisi_i2c.1: Hisilicon [i2c-1] probed! hisi_i2c hisi_i2c.2: Hisilicon [i2c-2] probed! usbcore: registered new interface driver usbhid usbhid: USB HID core driver TCP: cubic registered Initializing XFRM netlink socket NET: Registered protocol family 17 NET: Registered protocol family 15 lib80211: common routines for IEEE802.11 drivers Registering the dns_resolver key type VFP support v0.3: implementor 41 architecture 2 part 30 variant 7 rev 5 List of all partitions: No filesystem could mount root, tried:  jffs2 Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)[/code]