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/Documentation/arm/Sharp-LH/LPD7A400

https://bitbucket.org/evzijst/gittest
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 1README on Implementing Linux for the Logic PD LPD7A400-10
 2=========================================================
 3
 4- CPLD memory mapping
 5
 6  The board designers chose to use high address lines for controlling
 7  access to the CPLD registers.  It turns out to be a big waste
 8  because we're using an MMU and must map IO space into virtual
 9  memory.  The result is that we have to make a mapping for every
10  register.
11
12- Serial Console
13
14  It may be OK not to use the serial console option if the user passes
15  the console device name to the kernel.  This deserves some exploration.