diff options
Diffstat (limited to 'arch/x86/cpu/qemu/dram.c')
| -rw-r--r-- | arch/x86/cpu/qemu/dram.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/arch/x86/cpu/qemu/dram.c b/arch/x86/cpu/qemu/dram.c index 62a301c0fd3..ba3638e6acc 100644 --- a/arch/x86/cpu/qemu/dram.c +++ b/arch/x86/cpu/qemu/dram.c @@ -4,7 +4,9 @@ */ #include <init.h> +#include <spl.h> #include <asm/global_data.h> +#include <asm/mtrr.h> #include <asm/post.h> #include <asm/arch/qemu.h> #include <linux/sizes.h> @@ -44,6 +46,22 @@ int dram_init(void) gd->ram_size += qemu_get_high_memory_size(); post_code(POST_DRAM); + if (xpl_phase() == PHASE_BOARD_F) { + u64 total = gd->ram_size; + int ret; + + if (total > SZ_2G + SZ_1G) + total += SZ_1G; + ret = mtrr_add_request(MTRR_TYPE_WRBACK, 0, total); + if (ret != -ENOSYS) { + if (ret) + return log_msg_ret("mta", ret); + ret = mtrr_commit(false); + if (ret) + return log_msg_ret("mtc", ret); + } + } + return 0; } |