1) I used linuxppc_2_4_devel PowerPC development tree source(from
ppc.bkbits.net) to build kernel for PowerPC
IBM405EP(evb405ep_defconfig) and montavista's gcc cross compiler for
ppc_405-
2)I gave the following commands..
make evb405ep_config
make mrproper
make clean
make dep
make zImage
3) when i gave 'make zImage' command, the compilation stopped
abnormally and gave error that OPB_BASE_START symbol is unknown in
file ibm405ep.c
(arch/ppc/platforms/ibm405ep.c)
4) The point in source code where problem is arising is shown below....
-----------------------------------------------------------------------
..................
struct ocp_def core_ocp[] __initdata = {
{ .vendor = OCP_VENDOR_IBM,
.function = OCP_FUNC_OPB,
.index = 0,
.paddr = OPB_BASE_START, // UNKOWN SYMBOL
.irq = OCP_IRQ_NA,
.pm = OCP_CPM_NA,
.........
..........
----------------------------------------------------------------------
Suggestion 1) I fixed this bug by providing the OPB_BASE_START address.
Since the core of ibm405EP is same as that of ibm405Gp & ibm405Gpr,
the OPB_BASE_START address will be same for all.
So just include the following line in ibm405ep.h
(ie., in arch/ppc/platforms/ibm405ep.h)
#define OPB_BASE_START 0x40000000
2) After adding the above line, I recompiled the sources
again....and this time it compiled and i am able to work on IBM405Ep
board.
(configuration file for IBm405ep is 'evb405ep_defconfig' in configs folder)
Does anyone fixed this bug........if so why it is not reflected in bkbits
