WAKEUP 1000 ;give reset time to complete
STARTUP RESET
MEMDELAY 2000 ;additional memory access delay
BOOTADDR 0xfff00100
REGLIST ALL
BREAKMODE SOFT ; or HARD
POWERUP 1000
WAKEUP 500
MMU XLAT
PTBASE 0x000000f0
[HOST]
IP 192.168.1.9
FORMAT ELF
LOAD MANUAL ;load code MANUAL or AUTO after reset
PROMPT uei>
[FLASH]
CHIPTYPE AM29BX16 ;Flash type (AM29F | AM29BX8 | AM29BX16 | I28BX8 | I28BX16)
CHIPSIZE 0x00400000 ;The size of one flash chip in bytes
BUSWIDTH 16 ;The width of the flash memory bus in bits (8 | 16 | 32)
WORKSPACE 0x80008000 ;workspace in internal SRAM
FILE u-boot.bin
FORMAT BIN 0xFFF00000
ERASE 0xFFF00000 ;erase a sector of flash
ERASE 0xFFF10000 ;erase a sector of flash
ERASE 0xFFF20000 ;erase a sector of flash
ERASE 0xFFF30000 ;erase a sector of flash
ERASE 0xFFF40000 ;erase a sector of flash
[REGS]
FILE $reg5200.def
Примечания
1
See Appendix A, 'GNU Public License,' for the complete text of the license.
2
Most professional development managers agree: You can download Linux without charge, but there is a cost (often a substantial one) for development and deployment of any OS on an embedded platform. See Section 1.3.1, 'Free Versus Freedom,' for a discussion of cost elements.
3
If all the copyright holders agreed, the software could, in theory, be released under a new license, a very unlikely scenario indeed!
4
ATCA platforms are introduced in Chapter 3, 'Processor Basics.'
5
See www.compactflash.org.
6
Remember, you can change a 1 to a 0 a byte at a time, but you must erase the entire block to change any bit from a 0 back to a 1.
7
Directly in the logical sense. The actual circuitry may contain bus buffers or bridge devices, etc.
8
We discuss ramdisk file systems in much detail in Chapter 9, 'File Systems.'
9
Real-time clock modules often contain small amounts of nonvolatile storage, and Serial EEPROMs are another common choice for nonvolatile storage of small amounts of data.
