Merge branch 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm

Pull ARM updates from Russell King:
 "Another mixture of changes this time around:

   - Split XIP linker file from main linker file to make it more
     maintainable, and various XIP fixes, and clean up a resulting
     macro.

   - Decompressor cleanups from Masahiro Yamada

   - Avoid printing an error for a missing L2 cache

   - Remove some duplicated symbols in System.map, and move
     vectors/stubs back into kernel VMA

   - Various low priority fixes from Arnd

   - Updates to allow bus match functions to return negative errno
     values, touching some drivers and the driver core.  Greg has acked
     these changes.

   - Virtualisation platform udpates form Jean-Philippe Brucker.

   - Security enhancements from Kees Cook

   - Rework some Kconfig dependencies and move PSCI idle management code
     out of arch/arm into drivers/firmware/psci.c

   - ARM DMA mapping updates, touching media, acked by Mauro.

   - Fix places in ARM code which should be using virt_to_idmap() so
     that Keystone2 can work.

   - Fix Marvell Tauros2 to work again with non-DT boots.

   - Provide a delay timer for ARM Orion platforms"

* 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm: (45 commits)
  ARM: 8546/1: dma-mapping: refactor to fix coherent+cma+gfp=0
  ARM: 8547/1: dma-mapping: store buffer information
  ARM: 8543/1: decompressor: rename suffix_y to compress-y
  ARM: 8542/1: decompressor: merge piggy.*.S and simplify Makefile
  ARM: 8541/1: decompressor: drop redundant FORCE in Makefile
  ARM: 8540/1: decompressor: use clean-files instead of extra-y to clean files
  ARM: 8539/1: decompressor: drop more unneeded assignments to "targets"
  ARM: 8538/1: decompressor: drop unneeded assignments to "targets"
  ARM: 8532/1: uncompress: mark putc as inline
  ARM: 8531/1: turn init_new_context into an inline function
  ARM: 8530/1: remove VIRT_TO_BUS
  ARM: 8537/1: drop unused DEBUG_RODATA from XIP_KERNEL
  ARM: 8536/1: mm: hide __start_rodata_section_aligned for non-debug builds
  ARM: 8535/1: mm: DEBUG_RODATA makes no sense with XIP_KERNEL
  ARM: 8534/1: virt: fix hyp-stub build for pre-ARMv7 CPUs
  ARM: make the physical-relative calculation more obvious
  ARM: 8512/1: proc-v7.S: Adjust stack address when XIP_KERNEL
  ARM: 8411/1: Add default SPARSEMEM settings
  ARM: 8503/1: clk_register_clkdev: remove format string interface
  ARM: 8529/1: remove 'i' and 'zi' targets
  ...

7 files changed, 256 insertions, 96 deletions

diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig
index 549f6d3aec5b..55347662e5ed 100644
--- a/arch/arm/mm/Kconfig
+++ b/arch/arm/mm/Kconfig
@@ -1037,24 +1037,26 @@ config ARCH_SUPPORTS_BIG_ENDIAN
 	  This option specifies the architecture can support big endian
 	  operation.
 
-config ARM_KERNMEM_PERMS
-	bool "Restrict kernel memory permissions"
-	depends on MMU
-	help
-	  If this is set, kernel memory other than kernel text (and rodata)
-	  will be made non-executable. The tradeoff is that each region is
-	  padded to section-size (1MiB) boundaries (because their permissions
-	  are different and splitting the 1M pages into 4K ones causes TLB
-	  performance problems), wasting memory.
-
 config DEBUG_RODATA
 	bool "Make kernel text and rodata read-only"
-	depends on ARM_KERNMEM_PERMS
+	depends on MMU && !XIP_KERNEL
+	default y if CPU_V7
+	help
+	  If this is set, kernel text and rodata memory will be made
+	  read-only, and non-text kernel memory will be made non-executable.
+	  The tradeoff is that each region is padded to section-size (1MiB)
+	  boundaries (because their permissions are different and splitting
+	  the 1M pages into 4K ones causes TLB performance problems), which
+	  can waste memory.
+
+config DEBUG_ALIGN_RODATA
+	bool "Make rodata strictly non-executable"
+	depends on DEBUG_RODATA
 	default y
 	help
-	  If this is set, kernel text and rodata will be made read-only. This
-	  is to help catch accidental or malicious attempts to change the
-	  kernel's executable code. Additionally splits rodata from kernel
-	  text so it can be made explicitly non-executable. This creates
-	  another section-size padded region, so it can waste more memory
-	  space while gaining the read-only protections.
+	  If this is set, rodata will be made explicitly non-executable. This
+	  provides protection on the rare chance that attackers might find and
+	  use ROP gadgets that exist in the rodata section. This adds an
+	  additional section-aligned split of rodata from kernel text so it
+	  can be made explicitly non-executable. This padding may waste memory
+	  space to gain the additional protection.
diff --git a/arch/arm/mm/cache-tauros2.c b/arch/arm/mm/cache-tauros2.c
index 1e373d268c04..88255bea65e4 100644
--- a/arch/arm/mm/cache-tauros2.c
+++ b/arch/arm/mm/cache-tauros2.c
@@ -22,6 +22,11 @@
 #include <asm/cputype.h>
 #include <asm/hardware/cache-tauros2.h>
 
+/* CP15 PJ4 Control configuration register */
+#define CCR_L2C_PREFETCH_DISABLE	BIT(24)
+#define CCR_L2C_ECC_ENABLE		BIT(23)
+#define CCR_L2C_WAY7_4_DISABLE		BIT(21)
+#define CCR_L2C_BURST8_ENABLE		BIT(20)
 
 /*
  * When Tauros2 is used on a CPU that supports the v7 hierarchical
@@ -182,18 +187,18 @@ static void enable_extra_feature(unsigned int features)
 	u = read_extra_features();
 
 	if (features & CACHE_TAUROS2_PREFETCH_ON)
-		u &= ~0x01000000;
+		u &= ~CCR_L2C_PREFETCH_DISABLE;
 	else
-		u |= 0x01000000;
+		u |= CCR_L2C_PREFETCH_DISABLE;
 	pr_info("Tauros2: %s L2 prefetch.\n",
 			(features & CACHE_TAUROS2_PREFETCH_ON)
 			? "Enabling" : "Disabling");
 
 	if (features & CACHE_TAUROS2_LINEFILL_BURST8)
-		u |= 0x00100000;
+		u |= CCR_L2C_BURST8_ENABLE;
 	else
-		u &= ~0x00100000;
-	pr_info("Tauros2: %s line fill burt8.\n",
+		u &= ~CCR_L2C_BURST8_ENABLE;
+	pr_info("Tauros2: %s burst8 line fill.\n",
 			(features & CACHE_TAUROS2_LINEFILL_BURST8)
 			? "Enabling" : "Disabling");
 
@@ -287,16 +292,15 @@ void __init tauros2_init(unsigned int features)
 	node = of_find_matching_node(NULL, tauros2_ids);
 	if (!node) {
 		pr_info("Not found marvell,tauros2-cache, disable it\n");
-		return;
+	} else {
+		ret = of_property_read_u32(node, "marvell,tauros2-cache-features", &f);
+		if (ret) {
+			pr_info("Not found marvell,tauros-cache-features property, "
+				"disable extra features\n");
+			features = 0;
+		} else
+			features = f;
 	}
-
-	ret = of_property_read_u32(node, "marvell,tauros2-cache-features", &f);
-	if (ret) {
-		pr_info("Not found marvell,tauros-cache-features property, "
-			"disable extra features\n");
-		features = 0;
-	} else
-		features = f;
 #endif
 	tauros2_internal_init(features);
 }
diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
index 0eca3812527e..deac58d5f1f7 100644
--- a/arch/arm/mm/dma-mapping.c
+++ b/arch/arm/mm/dma-mapping.c
@@ -42,6 +42,55 @@
 #include "dma.h"
 #include "mm.h"
 
+struct arm_dma_alloc_args {
+	struct device *dev;
+	size_t size;
+	gfp_t gfp;
+	pgprot_t prot;
+	const void *caller;
+	bool want_vaddr;
+};
+
+struct arm_dma_free_args {
+	struct device *dev;
+	size_t size;
+	void *cpu_addr;
+	struct page *page;
+	bool want_vaddr;
+};
+
+struct arm_dma_allocator {
+	void *(*alloc)(struct arm_dma_alloc_args *args,
+		       struct page **ret_page);
+	void (*free)(struct arm_dma_free_args *args);
+};
+
+struct arm_dma_buffer {
+	struct list_head list;
+	void *virt;
+	struct arm_dma_allocator *allocator;
+};
+
+static LIST_HEAD(arm_dma_bufs);
+static DEFINE_SPINLOCK(arm_dma_bufs_lock);
+
+static struct arm_dma_buffer *arm_dma_buffer_find(void *virt)
+{
+	struct arm_dma_buffer *buf, *found = NULL;
+	unsigned long flags;
+
+	spin_lock_irqsave(&arm_dma_bufs_lock, flags);
+	list_for_each_entry(buf, &arm_dma_bufs, list) {
+		if (buf->virt == virt) {
+			list_del(&buf->list);
+			found = buf;
+			break;
+		}
+	}
+	spin_unlock_irqrestore(&arm_dma_bufs_lock, flags);
+	return found;
+}
+
 /*
  * The DMA API is built upon the notion of "buffer ownership".  A buffer
  * is either exclusively owned by the CPU (and therefore may be accessed
@@ -592,7 +641,7 @@ static inline pgprot_t __get_dma_pgprot(struct dma_attrs *attrs, pgprot_t prot)
 #define __alloc_remap_buffer(dev, size, gfp, prot, ret, c, wv)	NULL
 #define __alloc_from_pool(size, ret_page)			NULL
 #define __alloc_from_contiguous(dev, size, prot, ret, c, wv)	NULL
-#define __free_from_pool(cpu_addr, size)			0
+#define __free_from_pool(cpu_addr, size)			do { } while (0)
 #define __free_from_contiguous(dev, page, cpu_addr, size, wv)	do { } while (0)
 #define __dma_free_remap(cpu_addr, size)			do { } while (0)
 
@@ -610,7 +659,78 @@ static void *__alloc_simple_buffer(struct device *dev, size_t size, gfp_t gfp,
 	return page_address(page);
 }
 
+static void *simple_allocator_alloc(struct arm_dma_alloc_args *args,
+				    struct page **ret_page)
+{
+	return __alloc_simple_buffer(args->dev, args->size, args->gfp,
+				     ret_page);
+}
+
+static void simple_allocator_free(struct arm_dma_free_args *args)
+{
+	__dma_free_buffer(args->page, args->size);
+}
 
+static struct arm_dma_allocator simple_allocator = {
+	.alloc = simple_allocator_alloc,
+	.free = simple_allocator_free,
+};
+
+static void *cma_allocator_alloc(struct arm_dma_alloc_args *args,
+				 struct page **ret_page)
+{
+	return __alloc_from_contiguous(args->dev, args->size, args->prot,
+				       ret_page, args->caller,
+				       args->want_vaddr);
+}
+
+static void cma_allocator_free(struct arm_dma_free_args *args)
+{
+	__free_from_contiguous(args->dev, args->page, args->cpu_addr,
+			       args->size, args->want_vaddr);
+}
+
+static struct arm_dma_allocator cma_allocator = {
+	.alloc = cma_allocator_alloc,
+	.free = cma_allocator_free,
+};
+
+static void *pool_allocator_alloc(struct arm_dma_alloc_args *args,
+				  struct page **ret_page)
+{
+	return __alloc_from_pool(args->size, ret_page);
+}
+
+static void pool_allocator_free(struct arm_dma_free_args *args)
+{
+	__free_from_pool(args->cpu_addr, args->size);
+}
+
+static struct arm_dma_allocator pool_allocator = {
+	.alloc = pool_allocator_alloc,
+	.free = pool_allocator_free,
+};
+
+static void *remap_allocator_alloc(struct arm_dma_alloc_args *args,
+				   struct page **ret_page)
+{
+	return __alloc_remap_buffer(args->dev, args->size, args->gfp,
+				    args->prot, ret_page, args->caller,
+				    args->want_vaddr);
+}
+
+static void remap_allocator_free(struct arm_dma_free_args *args)
+{
+	if (args->want_vaddr)
+		__dma_free_remap(args->cpu_addr, args->size);
+
+	__dma_free_buffer(args->page, args->size);
+}
+
+static struct arm_dma_allocator remap_allocator = {
+	.alloc = remap_allocator_alloc,
+	.free = remap_allocator_free,
+};
 
 static void *__dma_alloc(struct device *dev, size_t size, dma_addr_t *handle,
 			 gfp_t gfp, pgprot_t prot, bool is_coherent,
@@ -619,7 +739,16 @@ static void *__dma_alloc(struct device *dev, size_t size, dma_addr_t *handle,
 	u64 mask = get_coherent_dma_mask(dev);
 	struct page *page = NULL;
 	void *addr;
-	bool want_vaddr;
+	bool allowblock, cma;
+	struct arm_dma_buffer *buf;
+	struct arm_dma_alloc_args args = {
+		.dev = dev,
+		.size = PAGE_ALIGN(size),
+		.gfp = gfp,
+		.prot = prot,
+		.caller = caller,
+		.want_vaddr = !dma_get_attr(DMA_ATTR_NO_KERNEL_MAPPING, attrs),
+	};
 
 #ifdef CONFIG_DMA_API_DEBUG
 	u64 limit = (mask + 1) & ~mask;
@@ -633,6 +762,10 @@ static void *__dma_alloc(struct device *dev, size_t size, dma_addr_t *handle,
 	if (!mask)
 		return NULL;
 
+	buf = kzalloc(sizeof(*buf), gfp);
+	if (!buf)
+		return NULL;
+
 	if (mask < 0xffffffffULL)
 		gfp |= GFP_DMA;
 
@@ -644,28 +777,37 @@ static void *__dma_alloc(struct device *dev, size_t size, dma_addr_t *handle,
 	 * platform; see CONFIG_HUGETLBFS.
 	 */
 	gfp &= ~(__GFP_COMP);
+	args.gfp = gfp;
 
 	*handle = DMA_ERROR_CODE;
-	size = PAGE_ALIGN(size);
-	want_vaddr = !dma_get_attr(DMA_ATTR_NO_KERNEL_MAPPING, attrs);
-
-	if (nommu())
-		addr = __alloc_simple_buffer(dev, size, gfp, &page);
-	else if (dev_get_cma_area(dev) && (gfp & __GFP_DIRECT_RECLAIM))
-		addr = __alloc_from_contiguous(dev, size, prot, &page,
-					       caller, want_vaddr);
-	else if (is_coherent)
-		addr = __alloc_simple_buffer(dev, size, gfp, &page);
-	else if (!gfpflags_allow_blocking(gfp))
-		addr = __alloc_from_pool(size, &page);
+	allowblock = gfpflags_allow_blocking(gfp);
+	cma = allowblock ? dev_get_cma_area(dev) : false;
+
+	if (cma)
+		buf->allocator = &cma_allocator;
+	else if (nommu() || is_coherent)
+		buf->allocator = &simple_allocator;
+	else if (allowblock)
+		buf->allocator = &remap_allocator;
 	else
-		addr = __alloc_remap_buffer(dev, size, gfp, prot, &page,
-					    caller, want_vaddr);
+		buf->allocator = &pool_allocator;
+
+	addr = buf->allocator->alloc(&args, &page);
+
+	if (page) {
+		unsigned long flags;
 
-	if (page)
 		*handle = pfn_to_dma(dev, page_to_pfn(page));
+		buf->virt = args.want_vaddr ? addr : page;
+
+		spin_lock_irqsave(&arm_dma_bufs_lock, flags);
+		list_add(&buf->list, &arm_dma_bufs);
+		spin_unlock_irqrestore(&arm_dma_bufs_lock, flags);
+	} else {
+		kfree(buf);
+	}
 
-	return want_vaddr ? addr : page;
+	return args.want_vaddr ? addr : page;
 }
 
 /*
@@ -741,25 +883,21 @@ static void __arm_dma_free(struct device *dev, size_t size, void *cpu_addr,
 			   bool is_coherent)
 {
 	struct page *page = pfn_to_page(dma_to_pfn(dev, handle));
-	bool want_vaddr = !dma_get_attr(DMA_ATTR_NO_KERNEL_MAPPING, attrs);
-
-	size = PAGE_ALIGN(size);
-
-	if (nommu()) {
-		__dma_free_buffer(page, size);
-	} else if (!is_coherent && __free_from_pool(cpu_addr, size)) {
+	struct arm_dma_buffer *buf;
+	struct arm_dma_free_args args = {
+		.dev = dev,
+		.size = PAGE_ALIGN(size),
+		.cpu_addr = cpu_addr,
+		.page = page,
+		.want_vaddr = !dma_get_attr(DMA_ATTR_NO_KERNEL_MAPPING, attrs),
+	};
+
+	buf = arm_dma_buffer_find(cpu_addr);
+	if (WARN(!buf, "Freeing invalid buffer %p\n", cpu_addr))
 		return;
-	} else if (!dev_get_cma_area(dev)) {
-		if (want_vaddr && !is_coherent)
-			__dma_free_remap(cpu_addr, size);
-		__dma_free_buffer(page, size);
-	} else {
-		/*
-		 * Non-atomic allocations cannot be freed with IRQs disabled
-		 */
-		WARN_ON(irqs_disabled());
-		__free_from_contiguous(dev, page, cpu_addr, size, want_vaddr);
-	}
+
+	buf->allocator->free(&args);
+	kfree(buf);
 }
 
 void arm_dma_free(struct device *dev, size_t size, void *cpu_addr,
@@ -1122,6 +1260,9 @@ static inline void __free_iova(struct dma_iommu_mapping *mapping,
 	spin_unlock_irqrestore(&mapping->lock, flags);
 }
 
+/* We'll try 2M, 1M, 64K, and finally 4K; array must end with 0! */
+static const int iommu_order_array[] = { 9, 8, 4, 0 };
+
 static struct page **__iommu_alloc_buffer(struct device *dev, size_t size,
 					  gfp_t gfp, struct dma_attrs *attrs)
 {
@@ -1129,6 +1270,7 @@ static struct page **__iommu_alloc_buffer(struct device *dev, size_t size,
 	int count = size >> PAGE_SHIFT;
 	int array_size = count * sizeof(struct page *);
 	int i = 0;
+	int order_idx = 0;
 
 	if (array_size <= PAGE_SIZE)
 		pages = kzalloc(array_size, GFP_KERNEL);
@@ -1154,6 +1296,10 @@ static struct page **__iommu_alloc_buffer(struct device *dev, size_t size,
 		return pages;
 	}
 
+	/* Go straight to 4K chunks if caller says it's OK. */
+	if (dma_get_attr(DMA_ATTR_ALLOC_SINGLE_PAGES, attrs))
+		order_idx = ARRAY_SIZE(iommu_order_array) - 1;
+
 	/*
 	 * IOMMU can map any pages, so himem can also be used here
 	 */
@@ -1162,22 +1308,24 @@ static struct page **__iommu_alloc_buffer(struct device *dev, size_t size,
 	while (count) {
 		int j, order;
 
-		for (order = __fls(count); order > 0; --order) {
-			/*
-			 * We do not want OOM killer to be invoked as long
-			 * as we can fall back to single pages, so we force
-			 * __GFP_NORETRY for orders higher than zero.
-			 */
-			pages[i] = alloc_pages(gfp | __GFP_NORETRY, order);
-			if (pages[i])
-				break;
+		order = iommu_order_array[order_idx];
+
+		/* Drop down when we get small */
+		if (__fls(count) < order) {
+			order_idx++;
+			continue;
 		}
 
-		if (!pages[i]) {
-			/*
-			 * Fall back to single page allocation.
-			 * Might invoke OOM killer as last resort.
-			 */
+		if (order) {
+			/* See if it's easy to allocate a high-order chunk */
+			pages[i] = alloc_pages(gfp | __GFP_NORETRY, order);
+
+			/* Go down a notch at first sign of pressure */
+			if (!pages[i]) {
+				order_idx++;
+				continue;
+			}
+		} else {
 			pages[i] = alloc_pages(gfp, 0);
 			if (!pages[i])
 				goto error;
diff --git a/arch/arm/mm/idmap.c b/arch/arm/mm/idmap.c
index d65909697165..bd274a05b8ff 100644
--- a/arch/arm/mm/idmap.c
+++ b/arch/arm/mm/idmap.c
@@ -15,7 +15,7 @@
  * page tables.
  */
 pgd_t *idmap_pgd;
-phys_addr_t (*arch_virt_to_idmap) (unsigned long x);
+unsigned long (*arch_virt_to_idmap)(unsigned long x);
 
 #ifdef CONFIG_ARM_LPAE
 static void idmap_add_pmd(pud_t *pud, unsigned long addr, unsigned long end,
diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
index 49bd08178008..370581aeb871 100644
--- a/arch/arm/mm/init.c
+++ b/arch/arm/mm/init.c
@@ -572,8 +572,9 @@ void __init mem_init(void)
 	}
 }
 
-#ifdef CONFIG_ARM_KERNMEM_PERMS
+#ifdef CONFIG_DEBUG_RODATA
 struct section_perm {
+	const char *name;
 	unsigned long start;
 	unsigned long end;
 	pmdval_t mask;
@@ -581,9 +582,13 @@ struct section_perm {
 	pmdval_t clear;
 };
 
+/* First section-aligned location at or after __start_rodata. */
+extern char __start_rodata_section_aligned[];
+
 static struct section_perm nx_perms[] = {
 	/* Make pages tables, etc before _stext RW (set NX). */
 	{
+		.name	= "pre-text NX",
 		.start	= PAGE_OFFSET,
 		.end	= (unsigned long)_stext,
 		.mask	= ~PMD_SECT_XN,
@@ -591,26 +596,26 @@ static struct section_perm nx_perms[] = {
 	},
 	/* Make init RW (set NX). */
 	{
+		.name	= "init NX",
 		.start	= (unsigned long)__init_begin,
 		.end	= (unsigned long)_sdata,
 		.mask	= ~PMD_SECT_XN,
 		.prot	= PMD_SECT_XN,
 	},
-#ifdef CONFIG_DEBUG_RODATA
 	/* Make rodata NX (set RO in ro_perms below). */
 	{
-		.start  = (unsigned long)__start_rodata,
+		.name	= "rodata NX",
+		.start  = (unsigned long)__start_rodata_section_aligned,
 		.end    = (unsigned long)__init_begin,
 		.mask   = ~PMD_SECT_XN,
 		.prot   = PMD_SECT_XN,
 	},
-#endif
 };
 
-#ifdef CONFIG_DEBUG_RODATA
 static struct section_perm ro_perms[] = {
 	/* Make kernel code and rodata RX (set RO). */
 	{
+		.name	= "text/rodata RO",
 		.start  = (unsigned long)_stext,
 		.end    = (unsigned long)__init_begin,
 #ifdef CONFIG_ARM_LPAE
@@ -623,7 +628,6 @@ static struct section_perm ro_perms[] = {
 #endif
 	},
 };
-#endif
 
 /*
  * Updates section permissions only for the current mm (sections are
@@ -670,8 +674,8 @@ void set_section_perms(struct section_perm *perms, int n, bool set,
 	for (i = 0; i < n; i++) {
 		if (!IS_ALIGNED(perms[i].start, SECTION_SIZE) ||
 		    !IS_ALIGNED(perms[i].end, SECTION_SIZE)) {
-			pr_err("BUG: section %lx-%lx not aligned to %lx\n",
-				perms[i].start, perms[i].end,
+			pr_err("BUG: %s section %lx-%lx not aligned to %lx\n",
+				perms[i].name, perms[i].start, perms[i].end,
 				SECTION_SIZE);
 			continue;
 		}
@@ -712,7 +716,6 @@ void fix_kernmem_perms(void)
 	stop_machine(__fix_kernmem_perms, NULL, NULL);
 }
 
-#ifdef CONFIG_DEBUG_RODATA
 int __mark_rodata_ro(void *unused)
 {
 	update_sections_early(ro_perms, ARRAY_SIZE(ro_perms));
@@ -735,11 +738,10 @@ void set_kernel_text_ro(void)
 	set_section_perms(ro_perms, ARRAY_SIZE(ro_perms), true,
 				current->active_mm);
 }
-#endif /* CONFIG_DEBUG_RODATA */
 
 #else
 static inline void fix_kernmem_perms(void) { }
-#endif /* CONFIG_ARM_KERNMEM_PERMS */
+#endif /* CONFIG_DEBUG_RODATA */
 
 void free_tcmmem(void)
 {
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index 88fbe0d23ca6..62f4d01941f7 100644
--- a/arch/arm/mm/mmu.c
+++ b/arch/arm/mm/mmu.c
@@ -1253,7 +1253,7 @@ static inline void prepare_page_table(void)
 
 #ifdef CONFIG_XIP_KERNEL
 	/* The XIP kernel is mapped in the module area -- skip over it */
-	addr = ((unsigned long)_etext + PMD_SIZE - 1) & PMD_MASK;
+	addr = ((unsigned long)_exiprom + PMD_SIZE - 1) & PMD_MASK;
 #endif
 	for ( ; addr < PAGE_OFFSET; addr += PMD_SIZE)
 		pmd_clear(pmd_off_k(addr));
@@ -1335,7 +1335,7 @@ static void __init devicemaps_init(const struct machine_desc *mdesc)
 #ifdef CONFIG_XIP_KERNEL
 	map.pfn = __phys_to_pfn(CONFIG_XIP_PHYS_ADDR & SECTION_MASK);
 	map.virtual = MODULES_VADDR;
-	map.length = ((unsigned long)_etext - map.virtual + ~SECTION_MASK) & SECTION_MASK;
+	map.length = ((unsigned long)_exiprom - map.virtual + ~SECTION_MASK) & SECTION_MASK;
 	map.type = MT_ROM;
 	create_mapping(&map);
 #endif
@@ -1426,7 +1426,11 @@ static void __init kmap_init(void)
 static void __init map_lowmem(void)
 {
 	struct memblock_region *reg;
+#ifdef CONFIG_XIP_KERNEL
+	phys_addr_t kernel_x_start = round_down(__pa(_sdata), SECTION_SIZE);
+#else
 	phys_addr_t kernel_x_start = round_down(__pa(_stext), SECTION_SIZE);
+#endif
 	phys_addr_t kernel_x_end = round_up(__pa(__init_end), SECTION_SIZE);
 
 	/* Map all the lowmem memory banks. */
diff --git a/arch/arm/mm/proc-v7.S b/arch/arm/mm/proc-v7.S
index 0f92d575a304..0f8963a7e7d9 100644
--- a/arch/arm/mm/proc-v7.S
+++ b/arch/arm/mm/proc-v7.S
@@ -487,7 +487,7 @@ __errata_finish:
 
 	.align	2
 __v7_setup_stack_ptr:
-	.word	__v7_setup_stack - .
+	.word	PHYS_RELATIVE(__v7_setup_stack, .)
 ENDPROC(__v7_setup)
 
 	.bss