diff options
| -rw-r--r-- | common/board_f.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/common/board_f.c b/common/board_f.c index 4d8b8a6..62fdaeb 100644 --- a/common/board_f.c +++ b/common/board_f.c @@ -360,6 +360,18 @@ static int setup_fdt(void) /* Get the top of usable RAM */ __weak ulong board_get_usable_ram_top(ulong total_size) { +#ifdef CONFIG_SYS_SDRAM_BASE + /* + * Detect whether we have so much RAM it goes past the end of our + * 32-bit address space. If so, clip the usable RAM so it doesn't. + */ + if (gd->ram_top < CONFIG_SYS_SDRAM_BASE) + /* + * Will wrap back to top of 32-bit space when reservations + * are made. + */ + return 0; +#endif return gd->ram_top; } |