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MPC85xx: Change traps.c to not reference non-addressable memory 

Currently, END_OF_RAM is used by the trap code to determine if
we should attempt to access the stack pointer or not. However,
on systems with a lot of RAM, only a subset of the RAM is
guaranteed to be mapped in and accessible.  Change END_OF_RAM
to use get_effective_memsize() instead of using the raw ram
size out of the bd.

Signed-off-by: Becky Bruce <becky.bruce@freescale.com>
This commit is contained in:
Becky Bruce 2008-05-14 13:10:04 -05:00 committed by Andrew Fleming-AFLEMING
parent 8155efbd7a
commit 3b9519fc50
1 changed files with 5 additions and 3 deletions
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8
cpu/mpc85xx/traps.c
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@ -50,10 +50,12 @@ int (*debugger_exception_handler)(struct pt_regs *) = 0;
extern unsigned long search_exception_table(unsigned long);
/*
* End of memory as shown by board info and determined by DDR setup.
* End of addressable memory. This may be less than the actual
* amount of memory on the system if we're unable to keep all
* the memory mapped in.
*/
#define END_OF_MEM (gd->bd->bi_memstart + gd->bd->bi_memsize)
extern ulong get_effective_memsize(void);
#define END_OF_MEM (gd->bd->bi_memstart + get_effective_memsize())
static __inline__ void set_tsr(unsigned long val)
{