我在
https://github.com/friendlyarm/linux-3.4.y.git 下载的内核, 打上 Preempt-RT 补丁
[url]https://www.kernel.org/pub/linux/kernel/projects/rt/3.4/older/patch-3.4.39-rt53.patch.gz[/url]
启动卡在那里:
Terminal ready
scratch is broken, clear
watchdog timer start
working to aarch32
waiting for pll change..
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Second Boot by Nexell Co. : Ver0.3.6 - Built on Jun 29 2016 15:19:53
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DDR3 POR Init Start 0
Lock value = 198
GATE CYC = 0x00000492
GATE CODE = 0x00000000
Read DQ = 0x08080808
Write DQ = 0x08080808
DDR3 Init Done!
CCI Init!
Wakeup CPU Wakeup Sub CPU 1234567
CPU Wakeup done! WFI is expected.
CPU0 is Master!
Loading from sdmmc...
Image Loading Done!
Launch to 0x42C00000
U-Boot 2014.07-g2342780 (Jun 12 2017 - 11:34:11)
PLL : [0] = 800000000, [1] = 800000000, [2] = 614394000, [3] = 800000000
(0) PLL1: CPU FCLK = 800000000, HCLK = 200000000 (G0)
(7) PLL1: CPU FCLK = 800000000, HCLK = 200000000 (G1)
(2) PLL3: MEM FCLK = 800000000, DCLK = 800000000, BCLK = 400000000, PCLK = 200000000
(1) PLL0: BUS BCLK = 400000000, PCLK = 200000000
(8) PLL0: CCI4 BCLK = 400000000, PCLK = 200000000
(3) PLL0: G3D BCLK = 400000000
(4) PLL0: CODA BCLK = 400000000, PCLK = 200000000
(5) PLL0: DISP BCLK = 400000000, PCLK = 200000000
(6) PLL0: HDMI PCLK = 100000000
I2C: ready
DRAM: 256 MiB
Heap = 0x43000000~0x45000000
Code = 0x42c00000~0x42c75984
GLD = 0x42bffeb8
GLBD = 0x42bffe68
SP = 0x42bffe68,0x42bffe50(CURR)
PC = 0x42c06220
TAGS = 0x40000100
PAGE = 0x42c80000~0x42c8c000
MACH = [4330]
VER = 0
BOARD= [nanopi3]
LCD = N/A (-1)
MMC: NXP DWMMC: 0, NXP DWMMC: 1, NXP DWMMC: 2
In: serial
Out: serial
Err: serial
switch to partitions #0, OK
mmc0 is current device
HDMI: display.0, preset 0 (1280 * 720)
HDMI: PHY Ready!!!
DONE: Logo bmp 800 by 480 (3bpp), len=1152056
DRAW: 0x47000000 -> 0x46000000
Hit any key to stop autoboot: 0
** File not found root.img.gz **
## Booting kernel from Legacy Image at 48000000 ...
Image Name: Linux-3.4.39-rt53-s5p6818
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 4392504 Bytes = 4.2 MiB
Load Address: 40008000
Entry Point: 40008000
Verifying Checksum ... OK
Loading Kernel Image ... OK
Starting kernel ...