Hi ,
We are trying to port Linux on Au1350 Board. We are using Linux port of db1300 board. We have Yamon bootloader running on the board.
The board does not have Ethernet port ,so we are loading Linux and rootfile system thru serial port and running using "go" command from Yamon. Linux is working as expected.
We have BDI3000 debugger and was wondering if it is possible to load the kernel and rootfile system to SDRAM using the debugger and execute it using Yamon ?
I tried this but could not succeed . Below are the steps I tried :
1. Start Yamon using BDI.
2. Halt the CPU and dump the kernel and rootfile system to SDRAM at free memory location ( 0x80093bf8 as per Yamon prompt).
3. We observed TLB exception while loading .
"
Au1350>load 0x80093bf8 vmlinux-rmi.srec srec
Loading vmlinux-rmi.srec , please wait ....
# TLB exception raised
"
If we reset the target using BDI reset command and then load is successful.
4. After load we gave go command from BDI to start the yamon.
5. Memory dump from Yamon shows correct download , but when I gave go command followed by load address its giving exception.
"
YAMON> go 0x80093bf8
* Exception (user) : TLB (load or instruction fetch) *
CAUSE = 0x00808008 STATUS = 0x00000002
EPC = 0x8010201c ERROREPC = 0xb02f52ce
BADVADDR = 0x000008c2
$ 0(zr):0x00000000 $ 8(t0):0x00000000 $16(s0):0x00000000 $24(t8):0x00000000
$ 1(at):0x00000000 $ 9(t1):0x00000000 $17(s1):0x00000000 $25(t9):0x00000000
$ 2(v0):0x00000000 $10(t2):0x00000000 $18(s2):0x00000000 $26(k0):0x00000000
$ 3(v1):0x00000000 $11(t3):0x00000000 $19(s3):0x00000000 $27(k1):0x00000000
$ 4(a0):0x00000001 $12(t4):0x00000000 $20(s4):0x00000000 $28(gp):0x00000000
$ 5(a1):0x80087340 $13(t5):0x00000000 $21(s5):0x00000000 $29(sp):0x80093be8
$ 6(a2):0x00000000 $14(t6):0x00000000 $22(s6):0x00000000 $30(s8):0x80093be8
$ 7(a3):0x10000000 $15(t7):0x00000000 $23(s7):0x00000000 $31(ra):0x8002f608
YAMON>
"
Any suggestion will be highly appreciated.
Thanks
Sanjay
