soc/amd/cezanne: call bootblock_main_with_basetime in bootblock_c_entry

Change-Id: Iaac661fcb7581236ace4b5bf057b3e70289f1c8b
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/48473
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>

src/soc/amd/cezanne/bootblock.c

@@ -2,11 +2,20 @@
 
 #include <amdblocks/amd_pci_mmconf.h>
 #include <bootblock_common.h>
+#include <cpu/x86/tsc.h>
 #include <stdint.h>
 
 asmlinkage void bootblock_c_entry(uint64_t base_timestamp)
 {
 	enable_pci_mmconf();
+
+	/*
+	 * base_timestamp is raw tsc value. We need to divide by tsc_freq_mhz
+	 * to get micro-seconds granularity.
+	 */
+	base_timestamp /= tsc_freq_mhz();
+
+	bootblock_main_with_basetime(base_timestamp);
 }
 
 void bootblock_soc_early_init(void)