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cpu/intel/common/fsb.c: Drop CAR_GLOBAL_MIGRATION support 

Change-Id: I151090c8d7f670f121dc7e4cbebfd720034fde33
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/37051
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Arthur Heymans 2019-11-20 22:12:08 +01:00 committed by Patrick Georgi
parent 462a7daeec
commit 6229cc93ff
1 changed files with 12 additions and 19 deletions
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31
src/cpu/intel/common/fsb.c
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@ -11,7 +11,6 @@
* GNU General Public License for more details. * GNU General Public License for more details.
*/ */
#include <arch/early_variables.h>
#include <cpu/x86/msr.h> #include <cpu/x86/msr.h>
#include <cpu/x86/tsc.h> #include <cpu/x86/tsc.h>
#include <cpu/intel/speedstep.h> #include <cpu/intel/speedstep.h>
@ -20,8 +19,8 @@
#include <commonlib/helpers.h> #include <commonlib/helpers.h>
#include <delay.h> #include <delay.h>
static u32 g_timer_fsb CAR_GLOBAL; static u32 g_timer_fsb;
static u32 g_timer_tsc CAR_GLOBAL; static u32 g_timer_tsc;
/* This is not an architectural MSR. */ /* This is not an architectural MSR. */
#define MSR_PLATFORM_INFO 0xce #define MSR_PLATFORM_INFO 0xce
@ -99,8 +98,8 @@ static void resolve_timebase(void)
ret = get_fsb_tsc(&fsb, &ratio); ret = get_fsb_tsc(&fsb, &ratio);
if (ret == 0) { if (ret == 0) {
u32 tsc = 100 * DIV_ROUND_CLOSEST(ratio * fsb, 100); u32 tsc = 100 * DIV_ROUND_CLOSEST(ratio * fsb, 100);
car_set_var(g_timer_fsb, fsb); g_timer_fsb = fsb;
car_set_var(g_timer_tsc, tsc); g_timer_tsc = tsc;
return; return;
} }
@ -110,33 +109,27 @@ static void resolve_timebase(void)
printk(BIOS_ERR, "CPU not supported\n"); printk(BIOS_ERR, "CPU not supported\n");
/* Set some semi-ridiculous defaults. */ /* Set some semi-ridiculous defaults. */
car_set_var(g_timer_fsb, 500); g_timer_fsb = 500;
car_set_var(g_timer_tsc, 5000); g_timer_tsc = 5000;
return; return;
} }
u32 get_timer_fsb(void) u32 get_timer_fsb(void)
{ {
u32 fsb; if (g_timer_fsb > 0)
return g_timer_fsb;
fsb = car_get_var(g_timer_fsb);
if (fsb > 0)
return fsb;
resolve_timebase(); resolve_timebase();
return car_get_var(g_timer_fsb); return g_timer_fsb;
} }
unsigned long tsc_freq_mhz(void) unsigned long tsc_freq_mhz(void)
{ {
u32 tsc; if (g_timer_tsc > 0)
return g_timer_tsc;
tsc = car_get_var(g_timer_tsc);
if (tsc > 0)
return tsc;
resolve_timebase(); resolve_timebase();
return car_get_var(g_timer_tsc); return g_timer_tsc;
} }
/** /**