diff options
| author | Aaron Durbin <adurbin@chromium.org> | 2020-05-28 10:17:34 -0600 |
|---|---|---|
| committer | Aaron Durbin <adurbin@chromium.org> | 2020-06-02 16:10:13 +0000 |
| commit | 1ebbb165efe71e83fbf19a9ce6c4bf14e2448d81 (patch) | |
| tree | c551359675462ccaf4758208403163a2103720cf /src | |
| parent | e1bf0656afaf4cdbb9759178b6b2af21baba42d7 (diff) | |
cpu/x86/mtrr: add x86_setup_mtrrs_with_detect_no_above_4gb()
There's not a function that is the equivalent to
x86_setup_mtrrs_with_detect() but not solving for above 4GiB.
Provide x86_setup_mtrrs_with_detect_no_above_4gb() which is the
equivalent to x86_setup_mtrrs_with_detect() but instructs the MTRR
solver to not take into account memory above 4GiB.
BUG=b:155426691
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Change-Id: Ia1b5d67d6f139aaa929e03ddbc394d57dfb949e0
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41897
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src')
| -rw-r--r-- | src/cpu/x86/mtrr/mtrr.c | 18 | ||||
| -rw-r--r-- | src/include/cpu/x86/mtrr.h | 1 |
2 files changed, 16 insertions, 3 deletions
diff --git a/src/cpu/x86/mtrr/mtrr.c b/src/cpu/x86/mtrr/mtrr.c index 1f37659503..77525a7907 100644 --- a/src/cpu/x86/mtrr/mtrr.c +++ b/src/cpu/x86/mtrr/mtrr.c @@ -774,7 +774,7 @@ void x86_setup_var_mtrrs(unsigned int address_bits, unsigned int above4gb) commit_var_mtrrs(sol); } -void x86_setup_mtrrs(void) +static void _x86_setup_mtrrs(unsigned int above4gb) { int address_size; @@ -782,14 +782,26 @@ void x86_setup_mtrrs(void) address_size = cpu_phys_address_size(); printk(BIOS_DEBUG, "CPU physical address size: %d bits\n", address_size); + x86_setup_var_mtrrs(address_size, above4gb); +} + +void x86_setup_mtrrs(void) +{ /* Always handle addresses above 4GiB. */ - x86_setup_var_mtrrs(address_size, 1); + _x86_setup_mtrrs(1); } void x86_setup_mtrrs_with_detect(void) { detect_var_mtrrs(); - x86_setup_mtrrs(); + /* Always handle addresses above 4GiB. */ + _x86_setup_mtrrs(1); +} + +void x86_setup_mtrrs_with_detect_no_above_4gb(void) +{ + detect_var_mtrrs(); + _x86_setup_mtrrs(0); } void x86_mtrr_check(void) diff --git a/src/include/cpu/x86/mtrr.h b/src/include/cpu/x86/mtrr.h index c1ee51accf..412330449f 100644 --- a/src/include/cpu/x86/mtrr.h +++ b/src/include/cpu/x86/mtrr.h @@ -77,6 +77,7 @@ void x86_setup_mtrrs(void); * it always dynamically detects the number of variable MTRRs available. */ void x86_setup_mtrrs_with_detect(void); +void x86_setup_mtrrs_with_detect_no_above_4gb(void); /* * x86_setup_var_mtrrs() parameters: * address_bits - number of physical address bits supported by cpu |