2017年7月1日 星期六

[RPi] Raspberry Pi


  • Software
  • Boot process
    • first stage bootloader
      • 在 GPU SoC中, 無法修改, 會去 mount SD card 上的FAT32 filesystem
    • second stage boot-loader (bootcode.bin) - only released by binary
      • retrieve GPU firmware in SD card, and starts the GPU
    • GPU firmware (start.elf) - only released by binary
      • GPU starts up CPU
      • additional fixup.dat will check SDRAM partition
    • User codes
      • any binaries, e.g. kernel image (kernel.img), U-Boot, bare-bone applications

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