Dear Sir: Version:U-Boot 2010.06-rc2-00006-g28ccd77-dirty (Jun 24 2010 - 20:35:40) (from git) Flash:Flash Type: MXIC Flash MX29GL128E, per bank 128Mbits.
and...I do some test.. After u-boot enter main_loop, I can not write data to flash via trace32. But I load my simple trace32 script, I can write data to flash via trace 32. simple initial of trace32: ========================================= D.S DCR:0xF9 %LONG %BE 000000019 ; CPC0_PCI, PerWE, PAE D.S DCR:0xF6 %LONG %BE 0 gosub IEBC "EBC0_B0AP" 0x10 007869200 gosub IEBC "EBC0_B0CR" 0x00 0FF09A000 ; 16MB @FE000000 ========================================= When I verify the value of "EBC and CPC0_PCI" register. u-boot and simple script fill the same value on "EBC and CPC0_PCI" I am trying to find out what registers protect flash from writing. And thank you that give much hints to me. On Tue, Jun 15, 2010 at 3:54 PM, Detlev Zundel <[email protected]> wrote: > Hello Chen, > > > Thanks for your advice!! > > When I try to erase across flash bank, I get error message before. > > "Error: cannot span across banks when they are mapped in reverse order" > > > > Now I fix the order of banks. > > And I can erase sector across flash bank now. > > Excellent. > > > But I still found that I can not erase first two sector. > > Ok, now I have to ask the ever-repeating questions - can you tell us > more about the version of U-Boot you are using and the actual Flash chip > that you use? Maybe the flash chip has some kind of write protection > feature which needs to be taken car of? > > Cheers > Detlev > > -- > Aktiengesellschaft: raffinierte Einrichtung zur persönlichen Bereicherung > ohne > persönliche Verantwortung. > -- Ambrose > Bierce > -- > DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel > HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany > Phone: (+49)-8142-66989-40 Fax: (+49)-8142-66989-80 Email: [email protected] >
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