diff --git a/arch/x86/include/asm/imr.h b/arch/x86/include/asm/imr.h
index cd2ce4068441..ebea2c9d2cdc 100644
--- a/arch/x86/include/asm/imr.h
+++ b/arch/x86/include/asm/imr.h
@@ -53,7 +53,7 @@
 #define IMR_MASK		(IMR_ALIGN - 1)
 
 int imr_add_range(phys_addr_t base, size_t size,
-		  unsigned int rmask, unsigned int wmask, bool lock);
+		  unsigned int rmask, unsigned int wmask);
 
 int imr_remove_range(phys_addr_t base, size_t size);
 
diff --git a/arch/x86/platform/intel-quark/imr.c b/arch/x86/platform/intel-quark/imr.c
index 740445a53363..17d6d2296e4d 100644
--- a/arch/x86/platform/intel-quark/imr.c
+++ b/arch/x86/platform/intel-quark/imr.c
@@ -134,11 +134,9 @@ static int imr_read(struct imr_device *idev, u32 imr_id, struct imr_regs *imr)
  * @idev:	pointer to imr_device structure.
  * @imr_id:	IMR entry to write.
  * @imr:	IMR structure representing address and access masks.
- * @lock:	indicates if the IMR lock bit should be applied.
  * @return:	0 on success or error code passed from mbi_iosf on failure.
  */
-static int imr_write(struct imr_device *idev, u32 imr_id,
-		     struct imr_regs *imr, bool lock)
+static int imr_write(struct imr_device *idev, u32 imr_id, struct imr_regs *imr)
 {
 	unsigned long flags;
 	u32 reg = imr_id * IMR_NUM_REGS + idev->reg_base;
@@ -162,15 +160,6 @@ static int imr_write(struct imr_device *idev, u32 imr_id,
 	if (ret)
 		goto failed;
 
-	/* Lock bit must be set separately to addr_lo address bits. */
-	if (lock) {
-		imr->addr_lo |= IMR_LOCK;
-		ret = iosf_mbi_write(QRK_MBI_UNIT_MM, MBI_REG_WRITE,
-				     reg - IMR_NUM_REGS, imr->addr_lo);
-		if (ret)
-			goto failed;
-	}
-
 	local_irq_restore(flags);
 	return 0;
 failed:
@@ -322,11 +311,10 @@ static inline int imr_address_overlap(phys_addr_t addr, struct imr_regs *imr)
  * @size:	physical size of region in bytes must be aligned to 1KiB.
  * @read_mask:	read access mask.
  * @write_mask:	write access mask.
- * @lock:	indicates whether or not to permanently lock this region.
  * @return:	zero on success or negative value indicating error.
  */
 int imr_add_range(phys_addr_t base, size_t size,
-		  unsigned int rmask, unsigned int wmask, bool lock)
+		  unsigned int rmask, unsigned int wmask)
 {
 	phys_addr_t end;
 	unsigned int i;
@@ -399,7 +387,7 @@ int imr_add_range(phys_addr_t base, size_t size,
 	imr.rmask = rmask;
 	imr.wmask = wmask;
 
-	ret = imr_write(idev, reg, &imr, lock);
+	ret = imr_write(idev, reg, &imr);
 	if (ret < 0) {
 		/*
 		 * In the highly unlikely event iosf_mbi_write failed
@@ -410,7 +398,7 @@ int imr_add_range(phys_addr_t base, size_t size,
 		imr.addr_hi = 0;
 		imr.rmask = IMR_READ_ACCESS_ALL;
 		imr.wmask = IMR_WRITE_ACCESS_ALL;
-		imr_write(idev, reg, &imr, false);
+		imr_write(idev, reg, &imr);
 	}
 failed:
 	mutex_unlock(&idev->lock);
@@ -506,7 +494,7 @@ static int __imr_remove_range(int reg, phys_addr_t base, size_t size)
 	imr.rmask = IMR_READ_ACCESS_ALL;
 	imr.wmask = IMR_WRITE_ACCESS_ALL;
 
-	ret = imr_write(idev, reg, &imr, false);
+	ret = imr_write(idev, reg, &imr);
 
 failed:
 	mutex_unlock(&idev->lock);
@@ -587,7 +575,7 @@ static void __init imr_fixup_memmap(struct imr_device *idev)
 	 * We don't round up @size since it is already PAGE_SIZE aligned.
 	 * See vmlinux.lds.S for details.
 	 */
-	ret = imr_add_range(base, size, IMR_CPU, IMR_CPU, false);
+	ret = imr_add_range(base, size, IMR_CPU, IMR_CPU);
 	if (ret < 0) {
 		pr_err("unable to setup IMR for kernel: %zu KiB (%lx - %lx)\n",
 			size / 1024, start, end);
diff --git a/arch/x86/platform/intel-quark/imr_selftest.c b/arch/x86/platform/intel-quark/imr_selftest.c
index 0381343a0d3a..f5bad40936ac 100644
--- a/arch/x86/platform/intel-quark/imr_selftest.c
+++ b/arch/x86/platform/intel-quark/imr_selftest.c
@@ -60,30 +60,30 @@ static void __init imr_self_test(void)
 	int ret;
 
 	/* Test zero zero. */
-	ret = imr_add_range(0, 0, 0, 0, false);
+	ret = imr_add_range(0, 0, 0, 0);
 	imr_self_test_result(ret < 0, "zero sized IMR\n");
 
 	/* Test exact overlap. */
-	ret = imr_add_range(base, size, IMR_CPU, IMR_CPU, false);
+	ret = imr_add_range(base, size, IMR_CPU, IMR_CPU);
 	imr_self_test_result(ret < 0, fmt_over, __va(base), __va(base + size));
 
 	/* Test overlap with base inside of existing. */
 	base += size - IMR_ALIGN;
-	ret = imr_add_range(base, size, IMR_CPU, IMR_CPU, false);
+	ret = imr_add_range(base, size, IMR_CPU, IMR_CPU);
 	imr_self_test_result(ret < 0, fmt_over, __va(base), __va(base + size));
 
 	/* Test overlap with end inside of existing. */
 	base -= size + IMR_ALIGN * 2;
-	ret = imr_add_range(base, size, IMR_CPU, IMR_CPU, false);
+	ret = imr_add_range(base, size, IMR_CPU, IMR_CPU);
 	imr_self_test_result(ret < 0, fmt_over, __va(base), __va(base + size));
 
 	/* Test that a 1 KiB IMR @ zero with read/write all will bomb out. */
 	ret = imr_add_range(0, IMR_ALIGN, IMR_READ_ACCESS_ALL,
-			    IMR_WRITE_ACCESS_ALL, false);
+			    IMR_WRITE_ACCESS_ALL);
 	imr_self_test_result(ret < 0, "1KiB IMR @ 0x00000000 - access-all\n");
 
 	/* Test that a 1 KiB IMR @ zero with CPU only will work. */
-	ret = imr_add_range(0, IMR_ALIGN, IMR_CPU, IMR_CPU, false);
+	ret = imr_add_range(0, IMR_ALIGN, IMR_CPU, IMR_CPU);
 	imr_self_test_result(ret >= 0, "1KiB IMR @ 0x00000000 - cpu-access\n");
 	if (ret >= 0) {
 		ret = imr_remove_range(0, IMR_ALIGN);
@@ -92,8 +92,7 @@ static void __init imr_self_test(void)
 
 	/* Test 2 KiB works. */
 	size = IMR_ALIGN * 2;
-	ret = imr_add_range(0, size, IMR_READ_ACCESS_ALL,
-			    IMR_WRITE_ACCESS_ALL, false);
+	ret = imr_add_range(0, size, IMR_READ_ACCESS_ALL, IMR_WRITE_ACCESS_ALL);
 	imr_self_test_result(ret >= 0, "2KiB IMR @ 0x00000000\n");
 	if (ret >= 0) {
 		ret = imr_remove_range(0, size);