diff options
| author | Nico Huber <nico.h@gmx.de> | 2018-11-13 19:28:07 +0100 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2018-11-23 08:34:16 +0000 |
| commit | d67edcae6e9d438f2e60f6b67d97a7d3f09cb18b (patch) | |
| tree | 38d7fe7b769f4193ea3b4494dc7944b9718c678c /src/include/cpu | |
| parent | 3032d7677883eb726d14fcd85efae7a7c068259a (diff) | |
soc/intel/common: Bring DISPLAY_MTRRS into the light
Initially, I wanted to move only the Kconfig DISPLAY_MTRRS into the
"Debug" menu. It turned out, though, that the code looks rather generic.
No need to hide it in soc/intel/.
To not bloat src/Kconfig up any further, start a new `Kconfig.debug`
hierarchy just for debug options.
If somebody wants to review the code if it's 100% generic, we could
even get rid of HAVE_DISPLAY_MTRRS.
Change-Id: Ibd0a64121bd6e4ab5d7fd835f3ac25d3f5011f24
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/c/29684
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/include/cpu')
| -rw-r--r-- | src/include/cpu/x86/mtrr.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/include/cpu/x86/mtrr.h b/src/include/cpu/x86/mtrr.h index 1f704ac869..eb7d78d1c5 100644 --- a/src/include/cpu/x86/mtrr.h +++ b/src/include/cpu/x86/mtrr.h @@ -99,10 +99,17 @@ void x86_mtrr_check(void); * This function needs to be called after the first MTRR solution is derived. */ void mtrr_use_temp_range(uintptr_t begin, size_t size, int type); +static inline int get_var_mtrr_count(void) +{ + return rdmsr(MTRR_CAP_MSR).lo & MTRR_CAP_VCNT; +} + void set_var_mtrr(unsigned int reg, unsigned int base, unsigned int size, unsigned int type); int get_free_var_mtrr(void); +asmlinkage void display_mtrrs(void); + /* * Set the MTRRs using the data on the stack from setup_stack_and_mtrrs. * Return a new top_of_stack value which removes the setup_stack_and_mtrrs data. |