[Ppcboot-users] Loading LinuxPPC kernel from ppcboot rom.

[Subodh N. <SNijsure@SkyStream.com>]

I think I have the PPCBOOTROM running for the powerpc board
that I am working with since this board is derivative of FADS860 but
is lot different I have created another "board" directory (named CXE) and
config file. 

As the log below shows I am able to download tftp image to the board. 

I am using 2.4.0-test2 kernel that comes with MVista CD. Anybody has
notes/hints/links on how I should go about porting by board specific things
that worked
for ppcboot into linux 2.4.0-test2 kernel?

Just for the sake of it I built the RPXLITE kernel and as expected it
doesn't work. 

Thanks!
/Subodh Nijsure


+ /root/ppcboot/tools/mkimage -n '2.4.0-test2 MVista Kernel' 
-A ppc -O linux -T kernel -C none -a 0x100000 -e 0x00000000 
-d /opt/hardhat/devkit/kernel/linux-2.4.0-test2/arch/ppc/coffboot/vmlinux.gz

/tftpboot/vmlinux 
Image Name:   2.4.0-test2 MVista Kernel for CX
Created:      Wed Dec 27 15:41:06 2000
Image Type:   PowerPC Linux Kernel Image (uncompressed)
Data Size:    218099 Bytes = 212.99 kB = 0.21 MB
Load Address: 0x00100000
Entry Point:  0x00000000  

---------------------------------------------------------------------

CXE-BOOTROM=>
 
ppcboot 0.7.0 (Dec 27 2000 - 11:16:07)
 
Initializing...
  CPU:   XPC860xxZPnnD3 at 48 MHz: 16 kB I-Cache 8 kB D-Cache FEC present
  Board:   SRAM:  64 MB
  Relocating to: 03fa0000, 393216 bytes for malloc()
  Board Info at: 03f3ffc0
  Chip is post RevD
  New Stack Pointer is: 03f3ff40
  Now running in RAM - dest_addr = 0x03fa0000
  FLASH:  4 MB
*** Warning - bad CRC, using default environment
 
  Monitor relocated to 0x03fa0000
  Input:  serial
  Output: serial 

CXE-BOOTROM=>reginfo
 
System Configuration registers
SIUMCR 1600400 SYPCR FFFFFF89
SWT FFFF0000 SWSR
SIPEND 20000 SIMASK 4000000
SIEL 0 SIVEC 3C000000
TESR 0 SDCR 1
Memory Controller Registers
BR0 0X28000001 OR0 0XFFC00742
BR1 0X40020001 OR1 0XFFFF07F2
BR2 0X40040001 OR2 0XFFFC07F2
BR3 0X40000C1 OR3 0XFC000A00
BR4 0X0 OR4 0X0
BR5 0XC1 OR5 0XFC000A00
BR6 0X0 OR6 0X0
BR7 0X40000801 OR7 0XFFFF8750
mamr 0X67001000 mbmr 0X18964114
mstat 0X0 mptpr 0X400
mdr 0XFFFFFFFF
System Integration Timers
TBSCR 0X1 RTCSC 0X11
PISCR 0X2  

CXE-BOOTROM=>setenv ipaddr 192.168.4.41
CXE-BOOTROM=>setenv serverip 192.168.4.43
CXE-BOOTROM=>

CXE-BOOTROM=>bdinfo
  memstart    = 0x00000000
  memsize     = 0x04000000
  flashstart  = 0x02800000
  flashsize   = 0x00400000
  flashoffset = 0x00060000
  sramstart   = 0x00000000
  sramsize    = 0x00000000
  immr_base   = 0xff000000
  bootflags   = 0x00000001
  intfreq     =     48 MHz
  busfreq     =     48 MHz
  ethaddr     = 00:C1:4F:1E:BF:80
  IP addr     = 192.168.4.41
  baudrate    =   9600 bps
  getc        = 0x03fadf2c
  tstc        = 0x03fadf64
  putc        = 0x03fade9c
  puts        = 0x03fadf84
  printf      = 0x03fa9b88
  install_hdlr= 0x03fae848
  free_hdlr   = 0x03fae8d0
  malloc      = 0x03fa8554
  free        = 0x03fa8abc 
CXE-BOOTROM=>tftpboot
In function NetLoop
FEC.C Initializing ethernet....
About to reset the FEC block....
TFTP from server 192.168.4.43; our IP address is 192.168.4.41
No file name; using 'vmlinux'.
No load address; using 0x100000
Loading: ###########################################
done       
CXE-BOOTROM=>iminfo
 
## Checking Image at 00100000 ...
   Image Name:   2.4.0-test2 MVista Kernel
   Image Type:   PowerPC Linux Kernel Image (uncompressed)
   Data Size:    218099 Bytes = 212 kB = 0 MB
   Load Address: 00100000
   Entry Point:  00000000
   Verifying Checksum ... OK
CXE-BOOTROM=>bootm
## Booting Linux kernel at 00100000 ...
   Image Name:   2.4.0-test2 MVista Kernel
   Image Type:   PowerPC Linux Kernel Image (uncompressed)
   Data Size:    218099 Bytes = 212 kB = 0 MB
   Load Address: 00100000
   Entry Point:  00000000
   Verifying Checksum ... OK
   Loading Kernel Image ... OK
## Transferring control to Linux (at address 00000000) ...
NIP: 00000000 XER: C0004F7F LR: 03FA4F30 REGS: 03f3fb20 TRAP: 1000 DAR:
E0004F7FMSR: 00001002 EE: 0 PR: 0 FP: 0 ME: 1 IR/DR: 00
 
GPR00: 03FA4F14 03F3FC10 00000000 007FFEC0 00000000 00000000 007FFF00
007FFF00
GPR08: 00000001 00000000 FF002808 00001E48 00000000 00800000 03FBC000
007FFF00
GPR16: 00000000 FFFFFFFF 007FFEC0 007FFF00 00000000 03FB52E4 03F3FFC0
03F3FE70
GPR24: 00000001 00100040 03FBB9EC 00100040 00000000 00000001 03FBC2EC
00000000
Call backtrace:
Software Emulation Exception
### ERROR ### Please RESET the board ###