Eric Lee / smarc-uboot

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d41ce506b   Eric Lee   Initial Release, ... 
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  ========================================
  Renesas SH7753 EVB board
  ========================================
  
  This board specification:
  =========================
  
  The SH7753 EVB (board config name:sh7753evb) has the following device:
  
   - SH7753 (SH-4A)
   - DDR3-SDRAM 512MB
   - SPI ROM 8MB
   - Gigabit Ethernet controllers
   - eMMC 4GB
  
  
  Configuration for This board:
  =============================
  
  You can select the configuration as follows:
  
   - make sh7753evb_config
  
  
  This board specific command:
  ============================
  
  This board has the following its specific command:
  
   - write_mac
  
  
  1. write_mac
  
  You can write MAC address to SPI ROM.
  
   Usage 1) Write MAC address
  
     write_mac [GETHERC ch0] [GETHERC ch1]
  
  	For example)
  	 => write_mac 74:90:50:00:33:9e 74:90:50:00:33:9f
  		*) We have to input the command as a single line
  		   (without carriage return)
  		*) We have to reset after input the command.
  
   Usage 2) Show current data
  
     write_mac
  
  	For example)
  		=> write_mac
  		GETHERC ch0 = 74:90:50:00:33:9e
  		GETHERC ch1 = 74:90:50:00:33:9f
  
  
  Update SPI ROM:
  ============================
  
  1. Copy u-boot image to RAM area.
  2. Probe SPI device.
     => sf probe 0
     SF: Detected MX25L6405D with page size 64KiB, total 8 MiB
  3. Erase SPI ROM.
     => sf erase 0 80000
  4. Write u-boot image to SPI ROM.
     => sf write 0x48000000 0 80000