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mpc850 question

  1. I using memset like below.(u-boot)

memset((char *)&TodCmdRxData, 0x00,sizeof(TODCMD_RXDATA));

but I see in console : ### ERROR ### Please RESET the board ###

in application memset using is normal, but in u-boot have error..

  1. I using mpc850 board. flash size : 2M, dram size : 16M kernel as nfs is normal but kernel as ram is error like below.

setenv bootargs root=/dev/ram

RAMDISK: Compressed image found at block 0 Oops: kernel access of bad area, sig: 11 NIP: C0036614 XER: C0000A7F LR: C003C3D8 SP: C017D3E0 REGS: c017d330 TRAP: 0300 MSR: 00009032 EE: 1 PR: 0 FP: 0 ME: 1 IR/DR: 11 DAR: 2C1F0031, DSISR: 0000000B TASK = c017c000[1] 'swapper' Last syscall: 120 last math 00000000 last altivec 00000000 GPR00: 408202AC C017D3E0 C017C000 00000100 00000F40 00000400 00000000 000003FF GPR08: C0100000 00000800 C0F96000 2C1F002D 00127000 00040000 00000000 00000400 GPR16: 00000000 00000000 00008000 00000100 00002000 C0FF0000 00000F40 C0100000 GPR24: 00000000 00000000 00000400 000003FF 00000100 00000400 00000F40 00000001 Call backtrace:

00000111 C003C3D8 C00FDCE0 C0068E80 C00698CC C0069A14 C0069AA0 C0069FB8 C00FDE48 C00FD7D8 C00FDBB8 C00FCC14 C00F881C C00F88BC C00023A8 C0004E80 Kernel panic: Attempted to kill init!

c00360b4 T init_buffer c00360c8 t end_buffer_io_async c00362d4 T set_buffer_async_io c00362e4 T fsync_inode_buffers c003647c T osync_inode_buffers c0036538 T invalidate_inode_buffers c0036594 T getblk c0036704 T balance_dirty_state c00367a0 T balance_dirty

  1. I'd like to send tx data per 2second as scc3 in u-boot. Would you give me a tip how I use function?
Reply to
LEE MYUNG SUK
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Your definitions of TodCmdRxData and/or TODCMD_RXDATA are invalid.

In U-Boot you must understand what you are doing before even attempting to do it.

What does "kernel as nfs" and "kernel as ram" mean?

How do you want to use SCC3? As UART? Ethernet? IrDA? HDLC? ???

Wolfgang Denk

--
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88   Web: www.denx.de
The light at the end of the tunnel is usually a "No Exit" sign.
Reply to
Wolfgang Denk

=> I made and used a fuction like below.

void my_memset(void) { char *src; int i;

src = (char *)&TodCmdRxData;

for(i=0; i >2. I using mpc850 board. flash size : 2M, dram size : 16M

=> bootargs root=/dev/nfs is working well. but if this kernel is using root=/dev/ram isn't working. I try to debug source. so I knew a problem at inflate. but I don't know the reaseon.

## Loading RAMDisk Image at 00200000 ... Verifying Checksum ... OK Loading Ramdisk to 00d92000, end 00f940ff ... OK fp->f_pos = c0d921fc buf = c0ffc000 kfree nblocks = 0 id_done nblocks = 0 build_cramdisk gunzip start...gunzip come.. inflate..

=> I want to use scc3 as uart.

Reply to
LEE MYUNG SUK

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