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| author | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2015-10-14 08:46:36 (GMT) |
|---|---|---|
| committer | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2015-10-14 08:46:36 (GMT) |
| commit | 13a3972585af60ec367d209cedbd3601e0c77467 (patch) | |
| tree | 4b3312669b3e501f6bc10b39d8c7bbf516f07aac /arch/x86/cpu/quark/dram.c | |
| parent | 208bd51396fb606dbdcf45b064e6b372d7dd3e81 (diff) | |
| parent | 297faccca2235e359012118495b9b73451d54bb9 (diff) | |
| download | u-boot-13a3972585af60ec367d209cedbd3601e0c77467.tar.xz | |
Merge remote-tracking branch 'u-boot/master'
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 9cac846..1b89376 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; } |