diff --git a/src/mainboard/google/mancomb/bootblock.c b/src/mainboard/google/mancomb/bootblock.c
index 11391efd1e..dd38c34f37 100644
--- a/src/mainboard/google/mancomb/bootblock.c
+++ b/src/mainboard/google/mancomb/bootblock.c
@@ -1,15 +1,37 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
+#include <amdblocks/acpimmio.h>
 #include <bootblock_common.h>
 #include <baseboard/variants.h>
+#include <console/console.h>
+#include <device/pci_ops.h>
+#include <soc/pci_devs.h>
 
 void bootblock_mainboard_early_init(void)
 {
 	size_t num_gpios;
+	uint32_t dword;
 	const struct soc_amd_gpio *gpios;
 
 	if (!CONFIG(VBOOT_STARTS_BEFORE_BOOTBLOCK)) {
 		gpios = variant_early_gpio_table(&num_gpios);
 		program_gpios(gpios, num_gpios);
 	}
+
+	printk(BIOS_DEBUG, "Bootblock configure eSPI\n");
+
+	dword = pci_read_config32(SOC_LPC_DEV, 0x78);
+	dword &= 0xFFFFF9F3;
+	dword |= 0x200;
+	pci_write_config32(SOC_LPC_DEV, 0x78, dword);
+	pci_write_config32(SOC_LPC_DEV, 0x44, 0);
+	pci_write_config32(SOC_LPC_DEV, 0x48, 0);
+
+	dword = pm_read32(0x90);
+	dword |= 1 << 16;
+	pm_write32(0x90, dword);
+
+	dword = pm_read32(0x74);
+	dword |= 3 << 10;
+	pm_write32(0x74, dword);
 }