1 Keymile kmeter1 Board 2 ----------------------------------------- 3 1. Alternative Boot EEPROM 4 5 Upon the kmeter1 startup the I2C_1 controller is used to fetch the boot 6 configuration from a serial EEPROM. During the development and debugging 7 phase it might be helpful to apply an alternative boot configuration in 8 a simple way. Therefore it is an alternative boot eeprom on the PIGGY, 9 which can be activated by setting the "ST" jumper on the PIGGY board. 10 11 2. Memory Map 12 13 BaseAddr PortSz Size Device 14 ----------- ------ ----- ------ 15 0x0000_0000 64 bit 256MB DDR 16 0x8000_0000 8 bit 256KB GPIO/PIGGY on CS1 17 0xa000_0000 8 bit 256MB PAXE on CS3 18 0xe000_0000 2MB Int Mem Reg Space 19 0xf000_0000 16 bit 256MB FLASH on CS0 20 21 22 DDR-SDRAM: 23 The current realization is made with four 16-bits memory devices. 24 Mounting options have been foreseen for device architectures from 25 4Mx16 to 512Mx16. The kmeter1 is equipped with four 32Mx16 devices 26 thus resulting in a total capacity of 256MBytes. 27 28 3. Compilation 29 30 Assuming you're using BASH shell: 31 32 export CROSS_COMPILE=your-cross-compile-prefix 33 cd u-boot 34 make distclean 35 make kmeter1_config 36 make 37 38 4. Downloading and Flashing Images 39 40 4.0 Download over serial line using Kermit: 41 42 loadb 43 [Drop to kermit: 44 ^\c 45 send <u-boot-bin-image> 46 c 47 ] 48 49 50 Or via tftp: 51 52 tftp 10000 u-boot.bin 53 => run load 54 Using UEC0 device 55 TFTP from server 192.168.1.1; our IP address is 192.168.205.4 56 Filename '/tftpboot/kmeter1/u-boot.bin'. 57 Load address: 0x200000 58 Loading: ############## 59 done 60 Bytes transferred = 204204 (31dac hex) 61 => 62 63 4.1 Reflash U-Boot Image using U-Boot 64 65 => run update 66 ..... done 67 Un-Protected 5 sectors 68 69 ..... done 70 Erased 5 sectors 71 Copy to Flash... done 72 ..... done 73 Protected 5 sectors 74 Total of 204204 bytes were the same 75 Saving Environment to Flash... 76 . done 77 Un-Protected 1 sectors 78 . done 79 Un-Protected 1 sectors 80 Erasing Flash... 81 . done 82 Erased 1 sectors 83 Writing to Flash... done 84 . done 85 Protected 1 sectors 86 . done 87 Protected 1 sectors 88 => 89 90 5. Notes 91 1) The console baudrate for kmeter1 is 115200bps. 92
