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