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| author | Becky Bruce <becky.bruce@freescale.com> | 2008-05-14 13:10:04 -0500 |
|---|---|---|
| committer | Andrew Fleming-AFLEMING <afleming@freescale.com> | 2008-06-09 13:31:20 -0500 |
| commit | 3b9519fc50802436e417c839e69df7b2016cade5 (patch) | |
| tree | a2d06b8498eda3cff55d2256f1402dcfab379b40 | |
| parent | 8155efbd7ae9c65564ca98affe94631d612ae088 (diff) | |
| download | u-boot-imx-3b9519fc50802436e417c839e69df7b2016cade5.zip u-boot-imx-3b9519fc50802436e417c839e69df7b2016cade5.tar.gz u-boot-imx-3b9519fc50802436e417c839e69df7b2016cade5.tar.bz2 | |
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>
| -rw-r--r-- | cpu/mpc85xx/traps.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/cpu/mpc85xx/traps.c b/cpu/mpc85xx/traps.c index 2381fb0..fd36658 100644 --- a/cpu/mpc85xx/traps.c +++ b/cpu/mpc85xx/traps.c @@ -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) { |