Very Computer

1. some problems about pci device driver in vxworks.

hi,all.

I am a beginner of vxworks bsp and English, now I have succeed developping a
driver of pci device in x86 platform. such is the steps:
1, according to information such as vendor ID, I found the specific device.
2, get the memory and I/O base address and size by reading and writing the
registers in config space.
3, call the function named sysMmuMapAdd() and add this these base address
and size to MMU table.
4, enable the device.
so ,my driver works well and I can access the memory and PIO spaces easily
by using "d" command. so I wonder who configged the bars at first, is it the
bios? this is my first problem.

now I should do the same thing under mpc8265. however things differs, you
see, there is not a function with the name "sysMmuMapAdd", at the same time,
in syslib.c ,the global array sysPhysMemDesc[] doesnot support the dummy
struct for future entry. while there are several structs filled with macros
defined in config.c, so question 2: should I change the value of these
macros for MMU map? if yes, so what is the principle to modify the default
value?

the 3rd, after the value of macros changed, is it still necessary to write
driver such as in x86? if yes, the most necessary part is to enable the
device, right?

my last question: for mpc, a processor without bios, so the bar configing
must be accomplished in bsp, so which function does this?

thanks to all,

yours sincelery:
solo

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