x86: Remove MIN_PORT80_KCLOCKS_DELAY

This is not referenced anywhere. Remove it, as well as
tsc_base_kclocks and tsc_prev in the global data.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>
Fix 'Reomve' typo:
Signed-off-by: Simon Glass <sjg@chromium.org>

arch/x86/cpu/cpu.c

@@ -641,24 +641,6 @@ int cpu_jump_to_64bit(ulong setup_base, ulong target)
 
 void show_boot_progress(int val)
 {
-#if MIN_PORT80_KCLOCKS_DELAY
-	/*
-	 * Scale the time counter reading to avoid using 64 bit arithmetics.
-	 * Can't use get_timer() here becuase it could be not yet
-	 * initialized or even implemented.
-	 */
-	if (!gd->arch.tsc_prev) {
-		gd->arch.tsc_base_kclocks = rdtsc() / 1000;
-		gd->arch.tsc_prev = 0;
-	} else {
-		uint32_t now;
-
-		do {
-			now = rdtsc() / 1000 - gd->arch.tsc_base_kclocks;
-		} while (now < (gd->arch.tsc_prev + MIN_PORT80_KCLOCKS_DELAY));
-		gd->arch.tsc_prev = now;
-	}
-#endif
 	outb(val, POST_PORT);
 }
 

arch/x86/include/asm/global_data.h

@@ -54,8 +54,6 @@ struct arch_global_data {
 	uint8_t x86_mask;
 	uint32_t x86_device;
 	uint64_t tsc_base;		/* Initial value returned by rdtsc() */
-	uint32_t tsc_base_kclocks;	/* Initial tsc as a kclocks value */
-	uint32_t tsc_prev;		/* For show_boot_progress() */
 	uint32_t tsc_mhz;		/* TSC frequency in MHz */
 	void *new_fdt;			/* Relocated FDT */
 	uint32_t bist;			/* Built-in self test value */