Hi list,
I was working with an old u-boot on a MPC8541 based board, and I am currently trying to port it on v2011.09 version of u-boot. I am facing an issue when debuging with a BDI2000 and I am wondering what could cause this kind of thing.
Here is the point, I start the board, and it enters start.S : _start_e500 () at start.S:129 129 mtspr L1CSR0,r0 /* invalidate d-cache */
I set a breakpoint (hardware) on line 183 which is : /* Setup interrupt vectors */ 183 lis r1,CONFIG_SYS_MONITOR_BASE@h 184 mtspr IVPR,r1
(gdb) b 183 Breakpoint 1 at 0xfffff07c: file start.S, line 183.
CONFIG_SYS_MONITOR_BASE is set to CONFIG_SYS_TEXT_BASE which is 0xFFF80000 in my config file.
then, I do : (gdb) c Continuing.
Breakpoint 1, _start_e500 () at start.S:183 183 lis r1,CONFIG_SYS_MONITOR_BASE@h (gdb) stepi Cannot access memory at address 0xfff80000
This is weird, and I can't understand what could explain this. I am quite sure it is not a big deal, (gdb) c Continuing.
Breakpoint 1, _start_e500 () at start.S:183 183 lis r1,CONFIG_SYS_MONITOR_BASE@h (gdb) stepi Cannot access memory at address 0xfff80000
This is weird, and I can't find the answer...
Thanks in advance for any clue ! Regards, JM