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已经做了一些时间了，移植了linux4.2内核，linux内核源码来自http://www.emcraft.com，但是不同的是uboot自己修改了QSPI接口方式正常烧写、启动引导内核，加载速度速度非常快，加入了驱动有CAN、Ethernet、usart、LCD、SD、WIFI、BT、USB HS host、gpio、button、LED等，希望各位坛友有空一起发帖交流。在上面linux开发程序相当快，跨平台效果好，完成了一个例子：Ethernet转CAN网关简单例子，已经运行起来了，后续继续开发加入协议，如Modbus TCP/RTU、CANOpen等。
## Booting kernel from Legacy Image at c0007fb4 ...
Image Name: Linux-4.2.0
Image Type: ARM Linux Multi-File Image (uncompressed)
Data Size: 8371255 Bytes = 8 MB
Load Address: c0008000
Entry Point: c0008001
Contents:
Image 0: 8347932 Bytes = 8 MB
Image 1: 23311 Bytes = 22.8 kB
Verifying Checksum ... OK
## Flattened Device Tree from multi component Image at C0007FB4
Booting using the fdt at 0xc07fe11c
Loading Multi-File Image ... OK
OK
Loading Device Tree to c1ff7000, end c1fffb0e ... OK
Starting kernel ...
[ 0.000000] Booting Linux on physical CPU 0x0
[ 0.000000] Linux version 4.2.0 (du@ubuntu) (gcc version 4.4.1 (Sourcery G+
+ Lite 2010q1-189) ) #38 PREEMPT Thu Aug 2 14:24:30 CST 2018
[ 0.000000] CPU: ARMv7-M [411fc270] revision 0 (ARMv7M), cr=00000000
[ 0.000000] CPU: WBA data cache, WBA instruction cache
[ 0.000000] Machine model: STM32F7-SOM board
[ 0.000000] Built 1 zonelists in Zone order, mobility grouping off. Total
pages: 8128
[ 0.000000] Kernel command line: stm32_platform=stm32f7-som console=ttyS0,1
15200 panic=10
[ 0.000000] PID hash table entries: 128 (order: -3, 512 bytes)
[ 0.000000] Dentry cache hash table entries: 4096 (order: 2, 16384 bytes)
[ 0.000000] Inode-cache hash table entries: 2048 (order: 1, 8192 bytes)
[ 0.000000] Memory: 23092K/32768K available (2623K kernel code, 173K rwdata
, 544K rodata, 4808K init, 109K bss, 9676K reserved, 0K cma-reserved)
[ 0.000000] Virtual kernel memory layout:
[ 0.000000] vector : 0x00000000 - 0x00001000 ( 4 kB)
[ 0.000000] fixmap : 0xffc00000 - 0xfff00000 (3072 kB)
[ 0.000000] vmalloc : 0x00000000 - 0xffffffff (4095 MB)
[ 0.000000] lowmem : 0xc0000000 - 0xc2000000 ( 32 MB)
[ 0.000000] .text : 0xc0008000 - 0xc0320000 (3168 kB)
[ 0.000000] .init : 0xc0320000 - 0xc07d2000 (4808 kB)
[ 0.000000] .data : 0xc07d2000 - 0xc07fd600 ( 174 kB)
[ 0.000000] .bss : 0xc07fe11c - 0xc0819724 ( 110 kB)
[ 0.000000] Preemptible hierarchical RCU implementation.
[ 0.000000] Additional per-CPU info printed with stalls.
[ 0.000000] Build-time adjustment of leaf fanout to 32.
[ 0.000000] NR_IRQS:16 nr_irqs:16 16
[ 0.000000] /interrupt-controller@40013c00: 25 External IRQs detected
[ 0.000000] clocksource: arm_system_timer: mask: 0xffffff max_cycles: 0xfff
fff, max_idle_ns: 276513358 ns
[ 0.000000] ARM System timer initialized as clocksource
[ 0.000000] /soc/timer@40000000: STM32 clockevent driver initialized (32 bi
ts)
[ 0.000000] sched_clock: 32 bits at 100 Hz, resolution 10000000ns, wraps ev
ery 21474836475000000ns
[ 0.010000] Calibrating delay loop... 427.62 BogoMIPS (lpj=2138112)
[ 0.060000] pid_max: default: 4096 minimum: 301
[ 0.060000] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.060000] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 by
[ 0.070000] devtmpfs: initialized
[ 0.120000] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff,
max_idle_ns: 19112604462750000 ns
[ 0.120000] pinctrl core: initialized pinctrl subsystem
[ 0.120000] NET: Registered protocol family 16
[ 0.180000] stm32-pinctrl pin-controller: nbanks = 11
[ 0.180000] stm32-pinctrl pin-controller: nfunctions = 18
[ 0.180000] stm32-pinctrl pin-controller: ngroups = 21
[ 0.180000] stm32-pinctrl pin-controller: GPIOA bank added.
[ 0.180000] stm32-pinctrl pin-controller: GPIOB bank added.
[ 0.190000] stm32-pinctrl pin-controller: GPIOC bank added.
[ 0.190000] stm32-pinctrl pin-controller: GPIOD bank added.
[ 0.190000] stm32-pinctrl pin-controller: GPIOE bank added.
[ 0.190000] stm32-pinctrl pin-controller: GPIOF bank added.
[ 0.190000] stm32-pinctrl pin-controller: GPIOG bank added.
[ 0.190000] stm32-pinctrl pin-controller: GPIOH bank added.
[ 0.200000] stm32-pinctrl pin-controller: GPIOI bank added.
[ 0.200000] stm32-pinctrl pin-controller: GPIOJ bank added.
[ 0.200000] stm32-pinctrl pin-controller: GPIOK bank added.
[ 0.200000] stm32-pinctrl pin-controller: Function[0 name:i2c_1, groups
...
[ 1.950000] usbcore: registered new interface driver cdc_acm
[ 1.950000] cdc_acm: USB Abstract Control Model driver for USB modems and I
SDN adapters
[ 1.960000] usbcore: registered new interface driver usb-storage
[ 1.970000] mousedev: PS/2 mouse device common for all mice
[ 2.200000] stm32-rtc 40002800.rtc: rtc core: registered 40002800.rtc as rt
c0
[ 2.210000] i2c /dev entries driver
[ 2.220000] Driver for 1-wire Dallas network protocol.
[ 2.230000] usbcore: registered new interface driver btusb
[ 2.230000] stm32-pinctrl pin-controller: maps: function gpio group outs nu
m 3
[ 2.250000] usbcore: registered new interface driver usbhid
[ 2.250000] usbhid: USB HID core driver
[ 2.260000] NET: Registered protocol family 17
[ 2.260000] can: controller area network core (rev 20120528 abi 9)
[ 2.270000] NET: Registered protocol family 29
[ 2.280000] can: raw protocol (rev 20120528)
[ 2.280000] can: broadcast manager protocol (rev 20120528 t)
[ 2.290000] can: netlink gateway (rev 20130117) max_hops=1
[ 2.290000] Bluetooth: RFCOMM TTY layer initialized
[ 2.300000] Bluetooth: RFCOMM socket layer initialized
[ 2.300000] Bluetooth: RFCOMM ver 1.11
[ 2.320000] stm32-pinctrl pin-controller: maps: function gpio group ins num
3
[ 2.330000] stm32_gpio_to_irq: Event line 0 now points to fire interrupts f
rom bank A
[ 2.340000] stm32_gpio_to_irq: Event line 9 now points to fire interrupts f
rom bank I
[ 2.350000] input: inputs as /devices/platform/inputs/input/input0
[ 2.380000] stm32-rtc 40002800.rtc: setting system clock to 2000-01-01 00:0
0:00 UTC (946684800)
[ 2.400000] vmmc: disabling
[ 2.580000] random: nonblocking pool is initialized
[ 2.950000] Freeing unused kernel memory: 4808K (c0320000 - c07d2000)
init started: BusyBox v1.24.2 (2018-07-27 13:27:57 CST)
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阿莫论坛20周年了！感谢大家的支持与爱护！！
月入3000的是反美的。收入3万是亲美的。收入30万是移民美国的。收入300万是取得绿卡后回国，教唆那些3000来反美的！
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发表于 2018-8-2 14:34:38
楼主
