From: Becky Bruce becky.bruce@freescale.com
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 --- 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) {