From mboxrd@z Thu Jan 1 00:00:00 1970 Message-Id: <387461B6.FDB5DB5C@ict.ac.cn> Date: Thu, 06 Jan 2000 17:34:46 +0800 From: LiuTao Mime-Version: 1.0 To: "linuxppc-embedded@lists.linuxppc.org" Subject: the problem of booting kernel Content-Type: text/plain; charset=gb2312 Sender: owner-linuxppc-embedded@lists.linuxppc.org List-Id: Hi all: I am porting Linux to a board which has MPC860MH50, 16M RAM and 2M Flash. I am using visionPROBE(emulator of EST) to debug my program. I download the zImage to the board by emulator, then run it. I can see the following: loaded at: 00800000 0080B1C8 board data at: 00800158 00800180 relocated to: 007F0100 007F0128 zimage at: 00830263 0088A2B1 avail ram: 0088B000 01000000 Linux/PPC load: Uncompressing Linux...done. Now booting the kernel Now, I find that the program stoped at 0x111C. So I set a breakpoint at "blr" in head.S at which the program will jump to the kernel. I ran the program again, it stoped at the breakpoint. Then I ran it step by step, I found that it jumped to 0x0000000C, I think that's the correct address. Then, I ran it continuously, it stopped at 0x111C again. That's very strange. If I don't set breakpoint at "blr" but set a breakpoint at 0x000C, the program can't stop at the breakpoint but stop at 0x111C. If I set breakpoint at "blr" and run it step by step, the program can get 0x000C. Do you have any suggestions? Thanks! LiuTao ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/