On Wednesday, May 16, 2007 5:12 PM Wolfgang Denk wrote:
In message <406A31B117F2734987636D6CCC93EE3C017BA2D5@ehost011- 3.exch011.intermedia.net> you wrote:
RAM and starts it. Note that u-boot environment variables stay on
the
flash all the time.
No, that's not correct. They get relocated to RAM like all other U-Boot code and data.
Well, I cannot answer for all possible boards, but on 3 boards I have here (Spartan FPGA Microblaze core, Virtex FPGA PPC405 core, at91rm9200-ek ATMEL board) u-boot is configured to be compiled to run from RAM, gets loaded to RAM by another bootloader and runs there, yet u-boot looks for environment on the flash and "saveenv" saves environment onto flash. May be it's not a "canonical" way of running from RAM, but it's convenient for me.
Actually the situation is very simple: if you know how to do it, just use it - you will then also know when it does not make sense. If you have to ask questions to get booting from RAM goind, then keep your fingers off, as you don;t have the qualification to use it.
I cannot agree more.
Best regards,
Leonid.