Hi, > Missed that mail :( > > it's old board, I have no source code for that customized version of > bootloader. > > I have commands > loadb - load binary file over serial line (kermit mode) > loads - load S-Record file over serial line > loady - load binary file over serial line (ymodem mode)
You should be able to use kermit to upload new data to RAM (to some address). > > NAND device: Manufacturer ID: 0xad, Chip ID: 0x75 (Hynix NAND 32MiB > 3,3V 8-bit) The NVRAM is MTD partition on "gen_nand": > 0x01f00000-0x01f80000 : "NVRAM" > dev: size erasesize name > mtd9: 00080000 00004000 "NVRAM" So the NVRAM is a mtd partition for NAND. What is the output of mtdparts command? > > The cp command is available in bootloader > > # help cp > cp [.b, .w, .l] source target count > - copy memory It should be enough to use "nand" commands: https://www.denx.de/wiki/DULG/UBootCmdGroupNand Erase, then write the mtd9 partition. > > > > > Regards, > Alex > -------------------------------------------- > On Fri, 12/22/17, Lukasz Majewski <lu...@denx.de> wrote: > > Subject: Re: [U-Boot] How to restore NVRAM on MTD partition from > backup To: "A.W.C." <bluestr...@ymail.com> > Cc: u-boot@lists.denx.de > Date: Friday, December 22, 2017, 11:58 PM > > On Wed, 20 Dec 2017 13:19:58 > +0000 (UTC) > "A.W.C." <bluestr...@ymail.com> > wrote: > > > Hi, > > > > U-Boot 2009.03 on > custom board. > > Nice :-) > > I assume that it is not > possible to move to newer one? > > >How to restore NVRAM on MTD partition > > from backup use U-boot memory commands, by > uploading backup over > > serial line? > (kermit mode or ymodem mode) NAND flash type. > > It depends on what commands do > you have? > > Yes, it would be > best to use load command to get the data via serial > line, store it in RAM and then flash it on > persistent memory. > > How do > you access NVRAM? (Is it really this memory - not some > Parallel > NAND, SPI-NOR, OneNAND)? > > If it has a custom driver > ,then you may want to look for 'cp' or other > command. > > > > > > Regards, > > > Alex > > > > > > > _______________________________________________ > > U-Boot mailing list > > > U-Boot@lists.denx.de > > https://lists.denx.de/listinfo/u-boot > > > > Best regards, > > Lukasz Majewski > > -- > > DENX > Software Engineering GmbH, Managing Director: > Wolfgang Denk > HRB 165235 Munich, Office: > Kirchenstr.5, D-82194 Groebenzell, Germany > Phone: (+49)-8142-66989-10 Fax: > (+49)-8142-66989-80 Email: w...@denx.de Best regards, Lukasz Majewski -- DENX Software Engineering GmbH, Managing Director: Wolfgang Denk HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: w...@denx.de
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