Hi Yi, Yi Qingliang wrote: > On Thursday, January 10, 2013 10:14:07 AM Juergen Beisert wrote: > > Yi Qingliang wrote: > > > On Thursday, January 10, 2013 09:36:36 AM Juergen Beisert wrote: > > > > Yi Qingliang wrote: > > > > > I'm using barebox (based on mini2440) on my s3c2442 board, > > > > > > > > > > 1. flash barebox into nand: can't start normally, but can see early > > > > > output on serial. > > > > > 2. load it in sdram: can start normally into shell, and then I use > > > > > it to boot kernel (also in sdram, also based on mini2440). > > > > > the kernel hang, no output. > > > > > > > > > > after dig into it, I found something: add "mem=64M" into the kernel > > > > > paramer, then the kernel can start. > > > > > > > > > > BUT: > > > > > the barebox doesn't pass that paramert to kernel for mini2440, > > > > > why the mini2440 kernel can start normally? > > > > > > > > > > how does the kernel on 2440 get the sdram size? > > > > > > > > There is no autodetection possible. Take a look into > > > > the "arch/arm/boards/friendlyarm-mini2440/lowlevel_init.S": This is > > > > the > > I found it, > but: > md 0x48000028 > 48000028: 000000b2 (represents is 128) > it looks like the lowlevel_init is not executed, what's the problem.
Is the symbol "CONFIG_MACH_DO_LOWLEVEL_INIT" enabled in your config? Regards, Juergen -- Pengutronix e.K. | Juergen Beisert | Linux Solutions for Science and Industry | http://www.pengutronix.de/ | _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox
