diff options
| author | Furquan Shaikh <furquan@google.com> | 2016-03-16 16:12:06 -0700 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2016-03-18 19:14:52 +0100 |
| commit | 331ac1b07896140a14dbb079b3cb907762cec218 (patch) | |
| tree | 8352f21b1d295a9e4a9b0bc801735e584ca324ee /src/include | |
| parent | 39e55209dce7d971c2e5b53706c5124e1ec01bb3 (diff) | |
mtrr: Define a function for obtaining free var mtrr
Instead of hard-coding var mtrr numbers in code, use this function to
identify the first available variable mtrr. If no such mtrr is
available, the function will return -1.
Change-Id: I2a1e02cdb45c0ab7e30609641977471eaa2431fd
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: https://review.coreboot.org/14115
Tested-by: build bot (Jenkins)
Reviewed-by: Andrey Petrov <andrey.petrov@intel.com>
Diffstat (limited to 'src/include')
| -rw-r--r-- | src/include/cpu/x86/mtrr.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/include/cpu/x86/mtrr.h b/src/include/cpu/x86/mtrr.h index d15873595e..4eb4f135c3 100644 --- a/src/include/cpu/x86/mtrr.h +++ b/src/include/cpu/x86/mtrr.h @@ -81,6 +81,7 @@ void x86_mtrr_check(void); #if !defined(__ASSEMBLER__) && defined(__PRE_RAM__) && !defined(__ROMCC__) void set_var_mtrr(unsigned reg, unsigned base, unsigned size, unsigned type); +int get_free_var_mtrr(void); #endif /* Align up to next power of 2, suitable for ROMCC and assembler too. |