Keymile kmeter1 Board
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1. Alternative Boot EEPROM
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Upon the kmeter1 startup the I2C_1 controller is used to fetch the boot
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configuration from a serial EEPROM. During the development and debugging
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phase it might be helpful to apply an alternative boot configuration in
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a simple way. Therefore it is an alternative boot eeprom on the PIGGY,
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which can be activated by setting the "ST" jumper on the PIGGY board.
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2. Memory Map
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BaseAddr PortSz Size Device
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----------- ------ ----- ------
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0x0000_0000 64 bit 256MB DDR
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0x8000_0000 8 bit 256KB GPIO/PIGGY on CS1
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0xa000_0000 8 bit 256MB PAXE on CS3
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0xe000_0000 2MB Int Mem Reg Space
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0xf000_0000 16 bit 256MB FLASH on CS0
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DDR-SDRAM:
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The current realization is made with four 16-bits memory devices.
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Mounting options have been foreseen for device architectures from
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4Mx16 to 512Mx16. The kmeter1 is equipped with four 32Mx16 devices
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thus resulting in a total capacity of 256MBytes.
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3. Compilation
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Assuming you're using BASH shell:
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export CROSS_COMPILE=your-cross-compile-prefix
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cd u-boot
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make distclean
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make kmeter1_config
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make
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4. Downloading and Flashing Images
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4.0 Download over serial line using Kermit:
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loadb
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[Drop to kermit:
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^\c
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send <u-boot-bin-image>
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c
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]
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Or via tftp:
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tftp 10000 u-boot.bin
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=> run load
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Using UEC0 device
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TFTP from server 192.168.1.1; our IP address is 192.168.205.4
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Filename '/tftpboot/kmeter1/u-boot.bin'.
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Load address: 0x200000
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Loading: ##############
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done
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Bytes transferred = 204204 (31dac hex)
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=>
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4.1 Reflash U-Boot Image using U-Boot
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=> run update
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..... done
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Un-Protected 5 sectors
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..... done
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Erased 5 sectors
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Copy to Flash... done
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..... done
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Protected 5 sectors
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Total of 204204 bytes were the same
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Saving Environment to Flash...
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. done
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Un-Protected 1 sectors
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. done
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Un-Protected 1 sectors
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Erasing Flash...
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. done
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Erased 1 sectors
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Writing to Flash... done
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. done
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Protected 1 sectors
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. done
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Protected 1 sectors
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=>
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5. Notes
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1) The console baudrate for kmeter1 is 115200bps.
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