Finally, I could compile vmlinux. I thought of booting this RAM image (or its SREC equivalent) using the onboard YAMON (in BIG endian mode - I am having trouble building Redboot in BIG endian mode <issue ported at ecos forum>, so for now thought of using YAMON). After downloding the vmlinux.srec over the serial port (Starting at 0x80100000), I issued the go command to run the image. I get the following message:
YAMON> go
LINUX started...
* Exception (user) : Reserved instruction * BadVAddr = 0x00000000 Cause = 0x00808028 Compare = 0x00061a80 Config = 0x80038083 Config1 = 0x1e9b4d8a Context = 0x63800000 Count = 0xb9188fd8 DEPC = 0x21424255 Debug = 0x0400dc0b EPC = 0x80122258 EntryHi = 0x00000068 EntryLo0 = 0x028ff72e EntryLo1 = 0x035a241f ErrorEPC = 0x8003add0 Index = 0x0000000b PRId = 0x00018001 PageMask = 0x01b90000 Random = 0x0000000d Status = 0x00000402 WatchHi = 0x00000000 WatchLo = 0x00000000 Wired = 0x00000000 Hi = 0x00000000 Lo = 0x04000000
$ 0(zr):0x00000000 $ 8(t0):0x00000000 $16(s0):0x802d810a $24(t8):0xffffffff
$ 1(at):0x80280000 $ 9(t1):0x00000000 $17(s1):0x802d810c $25(t9):0x802c1e94
$ 2(v0):0x0000000a $10(t2):0x8024f401 $18(s2):0x00000400 $26(k0):0x00000000
$ 3(v1):0x00000000 $11(t3):0x00000000 $19(s3):0x00000001 $27(k1):0x00000000
$ 4(a0):0x00000000 $12(t4):0x00000000 $20(s4):0x0000001a $28(gp):0x802c0000
$ 5(a1):0x80280000 $13(t5):0x00000000 $21(s5):0x0000000a $29(sp):0x802c1f58
$ 6(a2):0x8024385a $14(t6):0x802d8109 $22(s6):0x0000003e $30(s8):0x800b1080
$ 7(a3):0x00000000 $15(t7):0xfffffffe $23(s7):0x0000003c $31(ra):0x80122230
The linux image started fine, but caused an exception after a while. Is this because Linux is not compatible with YAMON? If so, what are the possible monitor programs that can go with Linux? Please point me to the documents in this regard (documents on running Linux executable on Atlas 4Kc board).
Or will Linux work with any ROM monitor? If so, please let me know the reason for the exception.
Thanks a lot, -Mike.
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