Sauce.Cheng wrote:
i tried
CONFIG_PPC_EARLY_DEBUG_CPM=y
CONFIG_PPC_EARLY_DEBUG_CPM_ADDR=0xf00000008
how can i make sure CPM_ADDR, 0xf0000008 is default value
Look at the u-boot source, or dump the memory and see if it looks like a
ring buffer.
sorry, i mean that CPM_ADDR is address of what? address of CPM registers or
something?
It's the address of a transmit descriptor for the serial port. It's
typically in DPRAM, but the exact position depends on where u-boot put
it. Try 0xf0000088.
This is a dts-v0 tree, which implies it's fairly old.
dose later dts be used in corresponding kernel version ?
Yes, current kernels use dts-v1.
in addition, there is one more question.
my RAM size is 32MBytes, my "vmlinux" size is 30MBytes, "vmlinux.o" size is
58MBytes. so , will there be something wrong at uncompressing time ?
That's just debugging information; it won't end up in the uImage. Use
the "size" utility in your toolchain to see how big the actual code and
data are.
-Scott
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