diff --git a/src/soc/intel/apollolake/bootblock/bootblock.c b/src/soc/intel/apollolake/bootblock/bootblock.c
index d3a78e106f..500761315b 100644
--- a/src/soc/intel/apollolake/bootblock/bootblock.c
+++ b/src/soc/intel/apollolake/bootblock/bootblock.c
@@ -12,7 +12,9 @@
 #include <arch/cpu.h>
 #include <bootblock_common.h>
 #include <device/pci.h>
+#include <program_loading.h>
 #include <soc/bootblock.h>
+#include <soc/cpu.h>
 #include <soc/northbridge.h>
 #include <soc/pci_devs.h>
 
@@ -32,3 +34,11 @@ void asmlinkage bootblock_c_entry(void)
 	/* Call lib/bootblock.c main */
 	main();
 }
+
+void platform_prog_run(struct prog *prog)
+{
+	/* Flush L1D cache to L2 */
+	msr_t msr = rdmsr(MSR_POWER_MISC);
+	msr.lo |= (1 << 8);
+	wrmsr(MSR_POWER_MISC, msr);
+}
diff --git a/src/soc/intel/apollolake/include/soc/cpu.h b/src/soc/intel/apollolake/include/soc/cpu.h
index bee58b206e..870f474c87 100644
--- a/src/soc/intel/apollolake/include/soc/cpu.h
+++ b/src/soc/intel/apollolake/include/soc/cpu.h
@@ -18,6 +18,7 @@
 #define CPUID_APOLLOLAKE_A0	0x506c8
 
 #define MSR_PLATFORM_INFO	0xce
+#define MSR_POWER_MISC		0x120
 
 #define BASE_CLOCK_MHZ		100