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
  ...

6 files changed, 49 insertions, 30 deletions

diff --git a/arch/arm/include/asm/Kbuild b/arch/arm/include/asm/Kbuild
index 16da6380eb85..3f6616b472af 100644
--- a/arch/arm/include/asm/Kbuild
+++ b/arch/arm/include/asm/Kbuild
@@ -23,7 +23,6 @@ generic-y += preempt.h
 generic-y += resource.h
 generic-y += rwsem.h
 generic-y += seccomp.h
-generic-y += sections.h
 generic-y += segment.h
 generic-y += sembuf.h
 generic-y += serial.h
diff --git a/arch/arm/include/asm/div64.h b/arch/arm/include/asm/div64.h
index e1f07764b0d6..7d919a9b32e5 100644
--- a/arch/arm/include/asm/div64.h
+++ b/arch/arm/include/asm/div64.h
@@ -74,7 +74,7 @@ static inline uint32_t __div64_32(uint64_t *n, uint32_t base)
 static inline uint64_t __arch_xprod_64(uint64_t m, uint64_t n, bool bias)
 {
 	unsigned long long res;
-	unsigned int tmp = 0;
+	register unsigned int tmp asm("ip") = 0;
 
 	if (!bias) {
 		asm (	"umull	%Q0, %R0, %Q1, %Q2\n\t"
@@ -90,12 +90,12 @@ static inline uint64_t __arch_xprod_64(uint64_t m, uint64_t n, bool bias)
 			: "r" (m), "r" (n)
 			: "cc");
 	} else {
-		asm (	"umull	%Q0, %R0, %Q1, %Q2\n\t"
-			"cmn	%Q0, %Q1\n\t"
-			"adcs	%R0, %R0, %R1\n\t"
-			"adc	%Q0, %3, #0"
-			: "=&r" (res)
-			: "r" (m), "r" (n), "r" (tmp)
+		asm (	"umull	%Q0, %R0, %Q2, %Q3\n\t"
+			"cmn	%Q0, %Q2\n\t"
+			"adcs	%R0, %R0, %R2\n\t"
+			"adc	%Q0, %1, #0"
+			: "=&r" (res), "+&r" (tmp)
+			: "r" (m), "r" (n)
 			: "cc");
 	}
 
diff --git a/arch/arm/include/asm/memory.h b/arch/arm/include/asm/memory.h
index c79b57bf71c4..9427fd632552 100644
--- a/arch/arm/include/asm/memory.h
+++ b/arch/arm/include/asm/memory.h
@@ -134,6 +134,21 @@
  */
 #define PLAT_PHYS_OFFSET	UL(CONFIG_PHYS_OFFSET)
 
+#ifdef CONFIG_XIP_KERNEL
+/*
+ * When referencing data in RAM from the XIP region in a relative manner
+ * with the MMU off, we need the relative offset between the two physical
+ * addresses.  The macro below achieves this, which is:
+ *    __pa(v_data) - __xip_pa(v_text)
+ */
+#define PHYS_RELATIVE(v_data, v_text) \
+	(((v_data) - PAGE_OFFSET + PLAT_PHYS_OFFSET) - \
+	 ((v_text) - XIP_VIRT_ADDR(CONFIG_XIP_PHYS_ADDR) + \
+          CONFIG_XIP_PHYS_ADDR))
+#else
+#define PHYS_RELATIVE(v_data, v_text) ((v_data) - (v_text))
+#endif
+
 #ifndef __ASSEMBLY__
 
 /*
@@ -273,14 +288,14 @@ static inline void *phys_to_virt(phys_addr_t x)
 #define __va(x)			((void *)__phys_to_virt((phys_addr_t)(x)))
 #define pfn_to_kaddr(pfn)	__va((phys_addr_t)(pfn) << PAGE_SHIFT)
 
-extern phys_addr_t (*arch_virt_to_idmap)(unsigned long x);
+extern unsigned long (*arch_virt_to_idmap)(unsigned long x);
 
 /*
  * These are for systems that have a hardware interconnect supported alias of
  * physical memory for idmap purposes.  Most cases should leave these
- * untouched.
+ * untouched.  Note: this can only return addresses less than 4GiB.
  */
-static inline phys_addr_t __virt_to_idmap(unsigned long x)
+static inline unsigned long __virt_to_idmap(unsigned long x)
 {
 	if (IS_ENABLED(CONFIG_MMU) && arch_virt_to_idmap)
 		return arch_virt_to_idmap(x);
@@ -303,20 +318,6 @@ static inline phys_addr_t __virt_to_idmap(unsigned long x)
 #define __bus_to_pfn(x)	__phys_to_pfn(x)
 #endif
 
-#ifdef CONFIG_VIRT_TO_BUS
-#define virt_to_bus virt_to_bus
-static inline __deprecated unsigned long virt_to_bus(void *x)
-{
-	return __virt_to_bus((unsigned long)x);
-}
-
-#define bus_to_virt bus_to_virt
-static inline __deprecated void *bus_to_virt(unsigned long x)
-{
-	return (void *)__bus_to_virt(x);
-}
-#endif
-
 /*
  * Conversion between a struct page and a physical address.
  *
diff --git a/arch/arm/include/asm/mmu_context.h b/arch/arm/include/asm/mmu_context.h
index 432ce8176498..fa5b42d44985 100644
--- a/arch/arm/include/asm/mmu_context.h
+++ b/arch/arm/include/asm/mmu_context.h
@@ -26,7 +26,12 @@ void __check_vmalloc_seq(struct mm_struct *mm);
 #ifdef CONFIG_CPU_HAS_ASID
 
 void check_and_switch_context(struct mm_struct *mm, struct task_struct *tsk);
-#define init_new_context(tsk,mm)	({ atomic64_set(&(mm)->context.id, 0); 0; })
+static inline int
+init_new_context(struct task_struct *tsk, struct mm_struct *mm)
+{
+	atomic64_set(&mm->context.id, 0);
+	return 0;
+}
 
 #ifdef CONFIG_ARM_ERRATA_798181
 void a15_erratum_get_cpumask(int this_cpu, struct mm_struct *mm,
@@ -85,7 +90,12 @@ static inline void finish_arch_post_lock_switch(void)
 
 #endif	/* CONFIG_MMU */
 
-#define init_new_context(tsk,mm)	0
+static inline int
+init_new_context(struct task_struct *tsk, struct mm_struct *mm)
+{
+	return 0;
+}
+
 
 #endif	/* CONFIG_CPU_HAS_ASID */
 
diff --git a/arch/arm/include/asm/sections.h b/arch/arm/include/asm/sections.h
new file mode 100644
index 000000000000..803bbf2b20b8
--- /dev/null
+++ b/arch/arm/include/asm/sections.h
@@ -0,0 +1,8 @@
+#ifndef _ASM_ARM_SECTIONS_H
+#define _ASM_ARM_SECTIONS_H
+
+#include <asm-generic/sections.h>
+
+extern char _exiprom[];
+
+#endif	/* _ASM_ARM_SECTIONS_H */
diff --git a/arch/arm/include/asm/sparsemem.h b/arch/arm/include/asm/sparsemem.h
index 00098615c6f0..73e5e8513751 100644
--- a/arch/arm/include/asm/sparsemem.h
+++ b/arch/arm/include/asm/sparsemem.h
@@ -15,10 +15,11 @@
  * Eg, if you have 2 banks of up to 64MB at 0x80000000, 0x84000000,
  * then MAX_PHYSMEM_BITS is 32, SECTION_SIZE_BITS is 26.
  *
- * Define these in your mach/memory.h.
+ * These can be overridden in your mach/memory.h.
  */
-#if !defined(SECTION_SIZE_BITS) || !defined(MAX_PHYSMEM_BITS)
-#error Sparsemem is not supported on this platform
+#if !defined(MAX_PHYSMEM_BITS) || !defined(SECTION_SIZE_BITS)
+#define MAX_PHYSMEM_BITS	36
+#define SECTION_SIZE_BITS	28
 #endif
 
 #endif