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===== Uboot를 이용한 Writing - BootStrap을 제외한 나머지 =====

==== TFTP Server 설치 ====

TFTP 서버는 Windows용이나 Linux 용이나 어떤것을 선택해도 된다. \\
간단하게 설치 후 사용할 수 있는  Windows 용을 설치해서 운영하였다. \\

이를 다운받아 풀고 이를 설치한다.\\

{{wiki:atmel_sama5d42:uboot_write:tftp_server_setup.jpg}} \\

이와 같이 TFTP server에서 공개될 폴더 하나를 설정한다.\\

아래는 본인의 설정에 따라 IP가 약간씩 변경된다.\\
이에 나의 설정에 따라 진행 된다.  가가자 본인의 설정에 맞추어 변경 해서 사용하기 바란다.\\

일단 TFTP server가 설치된 Windows의 IP는 다음과 같다.

{{wiki:atmel_sama5d42:uboot_write:server_ip.jpg}} \\

IP = 192.168.28.100

==== Uboot를 이용한 Write 예제 ====

우선 SAM-BA로 BootStrap과 U-boot는 Target Board에 설치 되어 있어야 한다.\\
이의 두개가 Target Board에 설치 되어 있어야 하고 Serial Debug와 Ethernet이 연결 되어 있어야 한다.\\
\\
나는 다음과 같이 연결 되어 있다.\\
\\
{{wiki:atmel_sama5d42:uboot_write:connection.jpg}} \\
\\
\\
Target Board의 Uboot 가 실행된 후 IP를 다음과 같이 설정한다.

Bank Address Offset Bits = 0xB ...
  Target Board Initialized
  Enabled 32.768KHz OSC
  
  
  Atmel Boot Strap For VI3.8.7 (2017. 07. 31. (월) 15:10:39 KST)
  
  
  All interrupts redirected to AIC
  Loading Image Initialized
  NAND: ONFI flash detected
  NAND: ONFI para CRC error!
  NAND: Manufacturer ID: 0x1, Chip ID: 0xda
  NAND: Enable On-Die ECC
  NAND : Bits Of ECC = 4
  NAND : Bits Of Data = 8
  NAND : Byte Size Of ECC Base = 512
  NAND : Byte Size Of Spare = 64
  NAND : Byte Size Of Page = 2048
  NAND : Number Of Pages In Block = 64
  NAND : Number Of Blocks In Unit = 1024
  NAND : Number Of Units In Device = 2
  NAND: Image: Copy 80000 bytes from 40000 to 26f00000
  NAND: Done to load image
  Jump to u-boot
  
  
  U-Boot 2016.03-linux4sam_5.5 (Jul 31 2017 - 12:02:12 +0900)
  
  CPU: SAMA5D42
  Crystal frequency:       12 MHz
  CPU clock        :      528 MHz
  Master clock     :      176 MHz
  I2C:   ready
  DRAM:  128 MiB
  NAND:  256 MiB
  MMC:   mci: 0
  In:    serial
  Out:   serial
  Err:   serial
  Net:   gmac0, usb_ether
  Error: usb_ether address not set.
  
  Hit any key to stop autoboot:  0
  =>
  =>
  => setenv ipaddr 192.168.28.28
  => setenv serverip 192.168.28.100
  => saveenv
  Saving Environment to NAND...
  Erasing redundant NAND...
  Erasing at 0x100000 -- 100% complete.
  Writing to redundant NAND... OK

여기서 Target Board의 전원을 껏다가 키면 TFTP를 사용할 수 있게 된다.\\
DDR의 영역은 다음과 같다.\\

{{wiki:atmel_sama5d42:uboot_write:DDR_Address.jpg}} \\

여기서 u-boot 가 사용하는 영역은 다음과 같다.\\

{{wiki:atmel_sama5d42:uboot_write:u-boot_Address.jpg}} \\

이 DDR의 비어 있는 곳을 이용하여 DTB 파일을 프로그램 한다.

DTB 파일을 다운로드한다.

Bank Address Offset Bits = 0xB ...
  Target Board Initialized
  Enabled 32.768KHz OSC
  
  Atmel Boot Strap For VI3.8.7 (2017. 07. 31. (월) 15:10:39 KST)
  
  All interrupts redirected to AIC
  Loading Image Initialized
  NAND: ONFI flash detected
  NAND: ONFI para CRC error!
  NAND: Manufacturer ID: 0x1, Chip ID: 0xda
  NAND: Enable On-Die ECC
  NAND : Bits Of ECC = 4
  NAND : Bits Of Data = 8
  NAND : Byte Size Of ECC Base = 512
  NAND : Byte Size Of Spare = 64
  NAND : Byte Size Of Page = 2048
  NAND : Number Of Pages In Block = 64
  NAND : Number Of Blocks In Unit = 1024
  NAND : Number Of Units In Device = 2
  NAND: Image: Copy 80000 bytes from 40000 to 26f00000
  NAND: Done to load image
  Jump to u-boot
  
  U-Boot 2016.03-linux4sam_5.5 (Jul 31 2017 - 12:02:12 +0900)
  
  CPU: SAMA5D42
  Crystal frequency:       12 MHz
  CPU clock        :      528 MHz
  Master clock     :      176 MHz
  I2C:   ready
  DRAM:  128 MiB
  NAND:  256 MiB
  MMC:   mci: 0
  In:    serial
  Out:   serial
  Err:   serial
  Net:   gmac0, usb_ether
  Error: usb_ether address not set.
  
  Hit any key to stop autoboot:  0
  =>
  =>
  => tftp 0x21000000 dtb.bin
  gmac0: PHY present at 0
  gmac0: link up, 100Mbps full-duplex (lpa: 0xcde1)
  Using gmac0 device
  TFTP from server 192.168.28.100; our IP address is 192.168.28.28
  Filename 'dtb.bin'.
  Load address: 0x21000000
  Loading: ###
         667 KiB/s
  done
  Bytes transferred = 33486 (82ce hex)
  =>

DTB 파일이 저장될 NAND Flash 영역을 지운다.

=> nand erase 0x180000 0x80000
  
  NAND erase: device 0 offset 0x180000, size 0x80000
  Erasing at 0x1e0000 -- 100% complete.
  OK
  =>

DTB 파일을 NAND Flash 영역에 프로그램 한다.

=> nand write 0x21000000 0x180000 0x82CE
  
  NAND write: device 0 offset 0x180000, size 0x82CE
   33486 bytes written: OK

Kernel Image 파일을 다운로드한다.

=> tftp 0x22000000 zImage.bin
  gmac0: PHY present at 0
  gmac0: link up, 100Mbps full-duplex (lpa: 0xcde1)
  Using gmac0 device
  TFTP from server 192.168.28.100; our IP address is 192.168.28.28
  Filename 'zImage.bin'.
  Load address: 0x22000000
  Loading: #################################################################
           #################################################################
           #################################################################
           ##############################################
           1.5 MiB/s
  done
  Bytes transferred = 3524376 (35c718 hex)
  =>

Kernel Image 파일이 저장될 NAND Flash 영역을 지운다.

=> nand erase 0x200000 0x400000
  
  NAND erase: device 0 offset 0x200000, size 0x400000
  Erasing at 0x6e0000 -- 100% complete.
  OK
  =>

Kernel Image 파일을 NAND Flash 영역에 프로그램 한다.

=> nand write 0x22000000 0x200000 0x35C718
  
  NAND write: device 0 offset 0x200000, size 0x35C718
   3524376 bytes written: OK
  =>

File System 파일을 다운로드한다.

=> tftp 0x21000000 rootfs_ubi.bin
  gmac0: PHY present at 0
  gmac0: link up, 100Mbps full-duplex (lpa: 0xcde1)
  Using gmac0 device
  TFTP from server 192.168.28.100; our IP address is 192.168.28.28
  Filename 'rootfs_ubi.bin'.
  Load address: 0x21000000
  Loading: #################################################################
           #################################################################
           #################################################################
           #################################################################
           #################################################################
           #################################################################
           #################################################################
           #################################################################
           #################################################################
           #################################################################
           #################################################################
           #################################################################
           #################################################################
           #################################################################
           #################################################################
           #################################################################
           #################################################################
           #################################################################
           #################################################################
           #################################################################
           #################################################################
           #################################################################
           #################################################################
           #################################################################
           #################################################################
           #################################################################
           #################################################################
           #################################################################
           #################################################################
           #################################################################
           #################################################################
           #################################################################
           #################################################################
           #################################################################
           #################################################################
           #################################################################
           #################################################################
           #################################################################
           #################################################################
           #################################################################
           #################################################################
           #################################################################
           #################################################################
           #################################################################
           #################################################################
           #############
           1.4 MiB/s
  done
  Bytes transferred = 43122688 (2920000 hex)
  =>

File System 파일이 저장될 NAND Flash 영역을 지운다.

=> nand erase 0x800000 0x2920000
  
  NAND erase: device 0 offset 0x800000 , size 0x2920000
  Erasing at 0x3110000 -- 100% complete.
  OK
  =>

File System 파일을 NAND Flash 영역에 프로그램 한다.

=> nand write 0x21000000 0x800000 0x2920000
  
  NAND write: device 0 offset 0x800000, size 0x2920000
   43122688 bytes written: OK
  =>

다시 Reset을 하면 커널까지 부팅이 완료된다.

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