diff options
| author | Aaron Durbin <adurbin@chromium.org> | 2017-06-08 11:00:23 -0500 |
|---|---|---|
| committer | Aaron Durbin <adurbin@chromium.org> | 2017-06-09 18:28:57 +0200 |
| commit | 93d5f40be51fc118a3b303f1fa515950f883f958 (patch) | |
| tree | 9310b4fa0900bfffb99c2def14859becf0e074a5 | |
| parent | efc92a86c2826f6fbac8c9c6098eb114c75bf9dd (diff) | |
soc/intel/skylake: Cache the MMIO BIOS region
If the boot media is memory mapped temporarily mark it as write
protect MTRR type so that memory-mapped accesses are faster.
Depthcharge payload loading was sped up by 75ms using this.
Change-Id: Ice217561bb01a43ba520ce51e03d81979f317343
Signed-off-by: Barnali Sarkar <barnali.sarkar@intel.com>
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/20089
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
| -rw-r--r-- | src/soc/intel/skylake/cpu.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/soc/intel/skylake/cpu.c b/src/soc/intel/skylake/cpu.c index dddc1c3c7e..d1ed146c1b 100644 --- a/src/soc/intel/skylake/cpu.c +++ b/src/soc/intel/skylake/cpu.c @@ -34,6 +34,7 @@ #include <cpu/x86/name.h> #include <cpu/x86/smm.h> #include <delay.h> +#include <intelblocks/fast_spi.h> #include <pc80/mc146818rtc.h> #include <soc/cpu.h> #include <soc/msr.h> @@ -569,6 +570,12 @@ static void soc_post_cpus_init(void *unused) { if (mp_run_on_all_cpus(&x86_setup_mtrrs_with_detect, 1000) < 0) printk(BIOS_ERR, "MTRR programming failure\n"); + + /* Temporarily cache the memory-mapped boot media. */ + if (IS_ENABLED(CONFIG_BOOT_DEVICE_MEMORY_MAPPED) && + IS_ENABLED(CONFIG_BOOT_DEVICE_SPI_FLASH)) + fast_spi_cache_bios_region(); + x86_mtrr_check(); } |