diff options
Diffstat (limited to 'arch/x86/cpu/quark/dram.c')
| -rw-r--r-- | arch/x86/cpu/quark/dram.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/x86/cpu/quark/dram.c b/arch/x86/cpu/quark/dram.c index 9cac846c69..1b89376387 100644 --- a/arch/x86/cpu/quark/dram.c +++ b/arch/x86/cpu/quark/dram.c @@ -7,8 +7,10 @@ #include <common.h> #include <errno.h> #include <fdtdec.h> +#include <asm/mtrr.h> #include <asm/post.h> #include <asm/arch/mrc.h> +#include <asm/arch/msg_port.h> #include <asm/arch/quark.h> DECLARE_GLOBAL_DATA_PTR; @@ -111,6 +113,14 @@ int dram_init(void) gd->ram_size = mrc_params.mem_size; post_code(POST_DRAM); + /* variable range MTRR#2: RAM area */ + disable_caches(); + msg_port_write(MSG_PORT_HOST_BRIDGE, MTRR_VAR_PHYBASE(MTRR_VAR_RAM), + 0 | MTRR_TYPE_WRBACK); + msg_port_write(MSG_PORT_HOST_BRIDGE, MTRR_VAR_PHYMASK(MTRR_VAR_RAM), + (~(gd->ram_size - 1)) | MTRR_PHYS_MASK_VALID); + enable_caches(); + return 0; } |
