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| author | Kyösti Mälkki <kyosti.malkki@gmail.com> | 2019-08-16 10:37:15 +0300 |
|---|---|---|
| committer | Kyösti Mälkki <kyosti.malkki@gmail.com> | 2019-08-28 22:48:00 +0000 |
| commit | 81100bf7ff62c4ee53214afb82f2fa9112d109b6 (patch) | |
| tree | 8fdb92df42e60e200095aac64eb6b9781c54594f /src/soc/intel/skylake/memmap.c | |
| parent | 4007d7f8c73d2872c6fe74f2b58a673161d6c947 (diff) | |
| download | coreboot-81100bf7ff62c4ee53214afb82f2fa9112d109b6.tar.xz | |
soc/intel: Move fill_postcar_frame to memmap.c
Change-Id: I84b1fad52d623a879f00c3f721f480f58d7d6d8a
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34894
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: David Guckian
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/soc/intel/skylake/memmap.c')
| -rw-r--r-- | src/soc/intel/skylake/memmap.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/src/soc/intel/skylake/memmap.c b/src/soc/intel/skylake/memmap.c index 9d3f377339..4c3c58a12d 100644 --- a/src/soc/intel/skylake/memmap.c +++ b/src/soc/intel/skylake/memmap.c @@ -14,10 +14,12 @@ * GNU General Public License for more details. */ +#include <arch/romstage.h> #include <arch/ebda.h> #include <device/mmio.h> #include <cbmem.h> #include <console/console.h> +#include <cpu/x86/mtrr.h> #include <cpu/x86/smm.h> #include <device/device.h> #include <device/pci.h> @@ -289,3 +291,33 @@ void *cbmem_top(void) return (void *)(uintptr_t)ebda_cfg.tolum_base; } + +#if CONFIG(PLATFORM_USES_FSP2_0) +void fill_postcar_frame(struct postcar_frame *pcf) +{ + uintptr_t top_of_ram; + uintptr_t smm_base; + size_t smm_size; + + /* + * We need to make sure ramstage will be run cached. At this + * point exact location of ramstage in cbmem is not known. + * Instruct postcar to cache 16 megs under cbmem top which is + * a safe bet to cover ramstage. + */ + top_of_ram = (uintptr_t) cbmem_top(); + printk(BIOS_DEBUG, "top_of_ram = 0x%lx\n", top_of_ram); + top_of_ram -= 16*MiB; + postcar_frame_add_mtrr(pcf, top_of_ram, 16*MiB, MTRR_TYPE_WRBACK); + + /* + * Cache the TSEG region at the top of ram. This region is + * not restricted to SMM mode until SMM has been relocated. + * By setting the region to cacheable it provides faster access + * when relocating the SMM handler as well as using the TSEG + * region for other purposes. + */ + smm_region(&smm_base, &smm_size); + postcar_frame_add_mtrr(pcf, smm_base, smm_size, MTRR_TYPE_WRBACK); +} +#endif |