diff --git a/src/mainboard/intel/galileo/reg_access.c b/src/mainboard/intel/galileo/reg_access.c
new file mode 100644
index 0000000..f19f526
--- /dev/null
+++ b/src/mainboard/intel/galileo/reg_access.c
@@ -0,0 +1,93 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2016 Intel Corp.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied wacbmem_entryanty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#define __SIMPLE_DEVICE__
+
+#include <arch/io.h>
+#include <console/console.h>
+#include <device/i2c.h>
+#include <soc/pci_devs.h>
+#include <soc/reg_access.h>
+#include "reg_access.h"
+
+#if ENV_RAMSTAGE
+static uint64_t reg_read(struct reg_script_context *ctx)
+{
+	int ret_code;
+	const struct reg_script *step;
+	uint8_t value = 0;
+
+	step = ctx->step;
+	switch (step->id) {
+	default:
+		printk(BIOS_ERR,
+			"ERROR - Unknown register set (0x%08x)!\n",
+			step->id);
+		ctx->display_features = REG_SCRIPT_DISPLAY_NOTHING;
+		break;
+
+	case GEN1_I2C_GPIO_EXP_0x20:
+	case GEN1_I2C_GPIO_EXP_0x21:
+	case GEN2_I2C_GPIO_EXP0:
+	case GEN2_I2C_GPIO_EXP1:
+	case GEN2_I2C_GPIO_EXP2:
+	case GEN2_I2C_LED_PWM:
+		if (ctx->display_features)
+			printk(BIOS_INFO, "I2C chip 0x%02x: ", step->id);
+		ret_code = i2c_readb(0, step->id, (UINT8)step->reg, &value);
+		ASSERT(ret_code == 2);
+		break;
+	}
+	return value;
+}
+
+static void reg_write(struct reg_script_context *ctx)
+{
+	int ret_code;
+	const struct reg_script *step;
+	uint8_t value;
+
+	step = ctx->step;
+	switch (step->id) {
+	default:
+		printk(BIOS_ERR,
+			"ERROR - Unknown register set (0x%08x)!\n",
+			step->id);
+		ctx->display_features = REG_SCRIPT_DISPLAY_NOTHING;
+		break;
+
+	case GEN1_I2C_GPIO_EXP_0x20:
+	case GEN1_I2C_GPIO_EXP_0x21:
+	case GEN2_I2C_GPIO_EXP0:
+	case GEN2_I2C_GPIO_EXP1:
+	case GEN2_I2C_GPIO_EXP2:
+	case GEN2_I2C_LED_PWM:
+	case RMU_TEMP_REGS:
+		if (ctx->display_features)
+			printk(BIOS_INFO, "I2C chip 0x%02x: ", step->id);
+		value = (UINT8)step->value;
+		ret_code = i2c_writeb(0, step->id, (UINT8)step->reg, value);
+		ASSERT(ret_code == 2);
+		break;
+	}
+}
+
+const struct reg_script_bus_entry mainboard_reg_script_bus_table = {
+	MAINBOARD_TYPE, reg_read, reg_write
+};
+
+REG_SCRIPT_BUS_ENTRY(mainboard_reg_script_bus_table);
+
+#endif	/* ENV_RAMSTAGE */