X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=drivers%2Ftimer%2Ftsc_timer.c;h=93c959ff44452c8e4bc5f834e5e7d9962e9a2382;hb=c05ed00afb95fa5237f16962fccf5810437317bf;hp=0df551f94cce09167a072125f1f98c67ec3fdf50;hpb=a7bbaf8c1345906affb8dd6faa6a3aaedac3f451;p=oweals%2Fu-boot.git

diff --git a/drivers/timer/tsc_timer.c b/drivers/timer/tsc_timer.c
index 0df551f94c..93c959ff44 100644
--- a/drivers/timer/tsc_timer.c
+++ b/drivers/timer/tsc_timer.c
@@ -7,7 +7,9 @@
  */
 
 #include <common.h>
+#include <bootstage.h>
 #include <dm.h>
+#include <log.h>
 #include <malloc.h>
 #include <time.h>
 #include <timer.h>
@@ -17,6 +19,7 @@
 #include <asm/ibmpc.h>
 #include <asm/msr.h>
 #include <asm/u-boot-x86.h>
+#include <linux/delay.h>
 
 #define MAX_NUM_FREQS	9
 
@@ -50,8 +53,7 @@ static unsigned long native_calibrate_tsc(void)
 		return 0;
 
 	crystal_freq = tsc_info.ecx / 1000;
-
-	if (!crystal_freq) {
+	if (!CONFIG_IS_ENABLED(X86_TSC_TIMER_NATIVE) && !crystal_freq) {
 		switch (gd->arch.x86_model) {
 		case INTEL_FAM6_SKYLAKE_MOBILE:
 		case INTEL_FAM6_SKYLAKE_DESKTOP:
@@ -397,7 +399,8 @@ static void tsc_timer_ensure_setup(bool early)
 {
 	if (gd->arch.tsc_inited)
 		return;
-	gd->arch.tsc_base = rdtsc();
+	if (IS_ENABLED(CONFIG_X86_TSC_READ_BASE))
+		gd->arch.tsc_base = rdtsc();
 
 	if (!gd->arch.clock_rate) {
 		unsigned long fast_calibrate;
@@ -406,6 +409,10 @@ static void tsc_timer_ensure_setup(bool early)
 		if (fast_calibrate)
 			goto done;
 
+		/* Reduce code size by dropping other methods */
+		if (CONFIG_IS_ENABLED(X86_TSC_TIMER_NATIVE))
+			panic("no timer");
+
 		fast_calibrate = cpu_mhz_from_cpuid();
 		if (fast_calibrate)
 			goto done;