build kernel


$ cd
$ wget
$ tar xvf toolchain.tar.gz
$ sudo mv toolchain /opt/nuc977
$ export PATH=$PATH:/opt/nuc977/usr/bin

$ wget
$ tar xvf kernel.tar.gz
$ cd kernel
$ make ARCH=arm nuc977_defconfig
$ vim arch/arm/boot/Makefile +51
  #cp $@   ../image/970image
  #zip ../image/ ../image/970image

$ vim arch/arm/boot/Makefile +85
  #cp $@   ../image/970uimage

$ make ARCH=arm menuconfig

$ ARCH=arm make uImage -j4


U-Boot 2013.04-rc2 (Jan 04 2021 - 21:19:03)

DRAM:  64 MiB
NAND:  No NAND device found!!!
NAND Flash not found !
0 MiB
MMC:   mmc: 0
SF: Detected W25Q128 with page size 4 KiB, total 16 MiB
In:    serial
Out:   serial
Err:   serial
Net:   emac
Hit any key to stop autoboot:  0
SF: Detected W25Q128 with page size 4 KiB, total 16 MiB
## Booting kernel from Legacy Image at 00007fc0 ...
   Image Name:   Linux-3.10.101
   Image Type:   ARM Linux Kernel Image (uncompressed)
   Data Size:    1819536 Bytes = 1.7 MiB
   Load Address: 00008000
   Entry Point:  00008000
   Verifying Checksum ... OK
SF: Detected W25Q128 with page size 4 KiB, total 16 MiB
SF: DeviceBooting Linux on physical CPU 0x0
Initializing cgroup subsys cpuset
Initializing cgroup subsys cpu
Initializing cgroup subsys cpuacct
Linux version 3.10.101 (steward@debian) (gcc version 4.3.4 (GCC) ) #1 PREEMPT Mon Jan 4 22:04:37 EST 2021
CPU: ARM926EJ-S [41069265] revision 5 (ARMv5TEJ), cr=00053177
CPU: VIVT data cache, VIVT instruction cache
Machine: NUC970
Memory policy: ECC disabled, Data cache writeback
Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 16256
Kernel command line: root=/dev/ram0 console=ttyS0,115200n8 rdinit=/sbin/init mem=64M
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: 61036k/61036k available, 4500k 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 - 0xc0346f94   (3324 kB)
      .init : 0xc0347000 - 0xc03655f0   ( 122 kB)
      .data : 0xc0366000 - 0xc0399660   ( 206 kB)
       .bss : 0xc0399660 - 0xc03c9550   ( 192 kB)
SLUB: HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
Preemptible hierarchical RCU implementation.
sched_clock: 32 bits at 100 Hz, resolution 10000000ns, wraps every 4294967286ms
Console: colour dummy device 80x30
console [ttyS0] enabled
Calibrating delay loop... 148.88 BogoMIPS (lpj=744448)
pid_max: default: 32768 minimum: 301
Mount-cache hash table entries: 512
Initializing cgroup subsys devices
Initializing cgroup subsys freezer
Initializing cgroup subsys perf_event
CPU: Testing write buffer coherency: ok
Setting up static identity map for 0xc02a0ca0 - 0xc02a0cdc
devtmpfs: initialized
pinctrl core: initialized pinctrl subsystem
NET: Registered protocol family 16
DMA: preallocated 256 KiB pool for atomic coherent allocations
bio: create slab  at 0
SCSI subsystem initialized
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
cfg80211: Calling CRDA to update world regulatory domain
Switching to clocksource nuc970-timer1
NET: Registered protocol family 2
TCP established hash table entries: 512 (order: 0, 4096 bytes)
TCP bind hash table entries: 512 (order: -1, 2048 bytes)
TCP: Hash tables configured (established 512 bind 512)
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
NetWinder Floating Point Emulator V0.97 (double precision)
ROMFS MTD (C) 2007 Red Hat, Inc.
msgmni has been set to 119
Block layer SCSI generic (bsg) driver version 0.4 loaded (major 254)
io scheduler noop registered
io scheduler deadline registered
io scheduler cfq registered (default)
nuc970-uart.0: ttyS0 at I/O 0x0 (irq = 36) is a NUC970
brd: module loaded
libphy: nuc970_rmii0: probed
nuc970-emac0 nuc970-emac0: phy_find_first() failed
nuc970-emac0 nuc970-emac0: nuc970_mii_setup err
ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
nuc970-ehci nuc970-ehci: Nuvoton NUC970 EHCI Host Controller
nuc970-ehci nuc970-ehci: new USB bus registered, assigned bus number 1
nuc970-ehci nuc970-ehci: irq 23, io mem 0xb0005000
nuc970-ehci nuc970-ehci: USB 2.0 started, EHCI 0.95
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 2 ports detected
ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
nuc970-ohci nuc970-ohci: Nuvoton NUC970 OHCI Host Controller
nuc970-ohci nuc970-ohci: new USB bus registered, assigned bus number 2
nuc970-ohci nuc970-ohci: irq 24, io mem 0xb0007000
hub 2-0:1.0: USB hub found
hub 2-0:1.0: 2 ports detected
usbcore: registered new interface driver usb-storage
TCP: cubic registered
NET: Registered protocol family 17
List of all partitions:
No filesystem could mount root, tried:  vfat msdos romfs
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(1,0)
CPU: 0 PID: 1 Comm: swapper Not tainted 3.10.101 #1