diff options
Diffstat (limited to 'src/soc/intel/quark/memmap.c')
| -rw-r--r-- | src/soc/intel/quark/memmap.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/src/soc/intel/quark/memmap.c b/src/soc/intel/quark/memmap.c index d67856cc74..b8b85063a8 100644 --- a/src/soc/intel/quark/memmap.c +++ b/src/soc/intel/quark/memmap.c @@ -13,6 +13,8 @@ * GNU General Public License for more details. */ +#include <arch/cpu.h> +#include <arch/romstage.h> #include <cbmem.h> #include <soc/reg_access.h> @@ -32,3 +34,28 @@ void *cbmem_top(void) /* Return the top of memory */ return (void *)top_of_memory; } + +void fill_postcar_frame(struct postcar_frame *pcf) +{ + uintptr_t top_of_ram; + uintptr_t top_of_low_usable_memory; + + /* Locate the top of RAM */ + top_of_low_usable_memory = (uintptr_t) cbmem_top(); + top_of_ram = ALIGN(top_of_low_usable_memory, 16 * MiB); + + /* Cache postcar and ramstage */ + postcar_frame_add_mtrr(pcf, top_of_ram - (16 * MiB), 16 * MiB, + MTRR_TYPE_WRBACK); + + /* Cache RMU area */ + postcar_frame_add_mtrr(pcf, (uintptr_t) top_of_low_usable_memory, + 0x10000, MTRR_TYPE_WRTHROUGH); + + /* Cache ESRAM */ + postcar_frame_add_mtrr(pcf, 0x80000000, 0x80000, MTRR_TYPE_WRBACK); + + pcf->skip_common_mtrr = 1; + /* Cache SPI flash - Write protect not supported */ + postcar_frame_add_romcache(pcf, MTRR_TYPE_WRTHROUGH); +} |