Re: [Linux-galileo] EV-64260-BP & GT64260 bi_recs

On Tue, Mar 19, 2002 at 02:56:14PM -0500, Mark A. Greer wrote:

Okay, the bi_rec discussions seems to have settled but without a real
concensus.

It would be nice to have bi_rec's settled as much as possible for the
EV-64260-BP board.  So, to put a stake in the ground, here is my current
thinking.  This is only for 2.4; 2.5 will have the more flexible version
that paulus is working on.

I've punted on the more complex bi_recs, and on passing in different
memory fragments, and other "memories" like flash and sram.  Obviously,
this is limited but it should at least attain the goal of having one
ev-64260 kernel that works with all the different firmwares and flexible
enough to pass in the things that are most likely to change (I think).

I like what Michael has done but want to add more and change the
BI_GT64260_ETH_CFG to a more generic BI_ETH_CFG.

Agreed. Simple is better right now, especially if things might get
totally redesigned in 2.5

Here's the list:

Already there (and generic):
---------------------------------
  BI_CMD_LINE -- cmd line if any
  BI_BOOTLOAD_ID -- bootloader ID
  BI_INITRD -- initrd addr
  BI_SYSMAP -- sysmap addr
  BI_MACHTYPE -- machine type
  BI_MEMSIZE -- mem size

New (and [pretty much] generic):
--------------------------------
  BI_MEMSTART -- mem start
  BI_INTFREQ -- internal CPU frequency??
  BI_BUSFREQ -- CPU bus freqency?
  BI_ETH_CFG -> struct with following:
   -- mac addr
   -- hdx/fdx; 10/100/1000/...; OR autonegotiate
   -- phy addr
   -- some bytes for driver specific info (e.g., on gt64260, is_rmii)
  BI_BAUDRATE -- Console baudrate
  BI_BRGFREQ -- Baud Rate generater freqency

  BI_IMMRBASE -- Base Address of CPU internal memory (82xx/8xx only)
  BI_SCCFREQ  -- SCC frequency in Hz (82xx, 8xx only)

GT64260 Specific:
----------------------
  BI_GT64260_BASE -- GT's reg physical base addr
  BI_GT64260_TCLK -- frequency of TCLK input


Some of the ones mentioned in previous emails have been omitted because
they didn't seem useful enough.  I could be wrong.  Also, I may have
missed some so please review the list and improve it.

Looks good.

The only thing that stands out (for the GT) is a second console baud
rate. probably unneccesary; most bootroms only initilize one serial
port anyway.

--
Nye Liu
nyet@zumanetworks.com

"Who would be stupid enough to quote a fictitious character?"
	-- Don Quixote

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