Merge branch 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm

112eb072 · Linus Torvalds <[email protected]> · 2017-06-05 11:19:40 -07:00

Pull ARM fixes from Russell King:
 "Three fixes this time around:

   - Two fixes for noMMU, fixing the decompressor header layout, and
     preventing a build error with some configurations.

   - Fixing the hyp-stub updates that went in during the merge window
     for platforms that use MCPM"

* 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm:
  ARM: 8677/1: boot/compressed: fix decompressor header layout for v7-M
  ARM: 8676/1: NOMMU: provide pgprot_device() macro
  ARM: 8675/1: MCPM: ensure not to enter __hyp_soft_restart from loopback and cpu_power_down

Commit: 112eb07287d10bef6ec74e36f1ffd24f19bdd0a0
Parents: 3c2993b8 · 06a4b6d0

Merge commit. Changes below are compared with the first parent: 3c2993b8.

Changes

4 files changed · +15 −13

File	Status	Add	Del	Content
arch/arm/boot/compressed/efi-header.S	modified	+1	−3	View file
arch/arm/boot/compressed/head.S	modified	+10	−7	View file
arch/arm/common/mcpm_entry.c	modified	+3	−3	View file
arch/arm/include/asm/pgtable-nommu.h	modified	+1	−0	View file

arch/arm/boot/compressed/efi-header.S

View file

diff --git a/arch/arm/boot/compressed/efi-header.S b/arch/arm/boot/compressed/efi-header.S
index 9d5dc4f..3f7d1b7 100644
--- a/arch/arm/boot/compressed/efi-header.S
+++ b/arch/arm/boot/compressed/efi-header.S
@@ -17,14 +17,12 @@
 		@ there.
 		.inst	'M' | ('Z' << 8) | (0x1310 << 16)   @ tstne r0, #0x4d000
 #else
-		mov	r0, r0
+		W(mov)	r0, r0
 #endif
 		.endm
 
 		.macro	__EFI_HEADER
 #ifdef CONFIG_EFI_STUB
-		b	__efi_start
-
 		.set	start_offset, __efi_start - start
 		.org	start + 0x3c
 		@

arch/arm/boot/compressed/head.S

View file

diff --git a/arch/arm/boot/compressed/head.S b/arch/arm/boot/compressed/head.S
index 7c711ba..8a75687 100644
--- a/arch/arm/boot/compressed/head.S
+++ b/arch/arm/boot/compressed/head.S
@@ -130,19 +130,22 @@ start:
 		.rept	7
 		__nop
 		.endr
-   ARM(		mov	r0, r0		)
-   ARM(		b	1f		)
- THUMB(		badr	r12, 1f		)
- THUMB(		bx	r12		)
+#ifndef CONFIG_THUMB2_KERNEL
+		mov	r0, r0
+#else
+ AR_CLASS(	sub	pc, pc, #3	)	@ A/R: switch to Thumb2 mode
+  M_CLASS(	nop.w			)	@ M: already in Thumb2 mode
+		.thumb
+#endif
+		W(b)	1f
 
 		.word	_magic_sig	@ Magic numbers to help the loader
 		.word	_magic_start	@ absolute load/run zImage address
 		.word	_magic_end	@ zImage end address
 		.word	0x04030201	@ endianness flag
 
- THUMB(		.thumb			)
-1:		__EFI_HEADER
-
+		__EFI_HEADER
+1:
  ARM_BE8(	setend	be		)	@ go BE8 if compiled for BE8
  AR_CLASS(	mrs	r9, cpsr	)
 #ifdef CONFIG_ARM_VIRT_EXT

arch/arm/common/mcpm_entry.c

View file

diff --git a/arch/arm/common/mcpm_entry.c b/arch/arm/common/mcpm_entry.c
index cf06247..2b913f1 100644
--- a/arch/arm/common/mcpm_entry.c
+++ b/arch/arm/common/mcpm_entry.c
@@ -235,7 +235,7 @@ int mcpm_cpu_power_up(unsigned int cpu, unsigned int cluster)
 	return ret;
 }
 
-typedef void (*phys_reset_t)(unsigned long);
+typedef typeof(cpu_reset) phys_reset_t;
 
 void mcpm_cpu_power_down(void)
 {
@@ -300,7 +300,7 @@ void mcpm_cpu_power_down(void)
 	 * on the CPU.
 	 */
 	phys_reset = (phys_reset_t)(unsigned long)__pa_symbol(cpu_reset);
-	phys_reset(__pa_symbol(mcpm_entry_point));
+	phys_reset(__pa_symbol(mcpm_entry_point), false);
 
 	/* should never get here */
 	BUG();
@@ -389,7 +389,7 @@ static int __init nocache_trampoline(unsigned long _arg)
 	__mcpm_cpu_down(cpu, cluster);
 
 	phys_reset = (phys_reset_t)(unsigned long)__pa_symbol(cpu_reset);
-	phys_reset(__pa_symbol(mcpm_entry_point));
+	phys_reset(__pa_symbol(mcpm_entry_point), false);
 	BUG();
 }
 

arch/arm/include/asm/pgtable-nommu.h

View file

diff --git a/arch/arm/include/asm/pgtable-nommu.h b/arch/arm/include/asm/pgtable-nommu.h
index 302240c..a0d726a 100644
--- a/arch/arm/include/asm/pgtable-nommu.h
+++ b/arch/arm/include/asm/pgtable-nommu.h
@@ -66,6 +66,7 @@ typedef pte_t *pte_addr_t;
 #define pgprot_noncached(prot)	(prot)
 #define pgprot_writecombine(prot) (prot)
 #define pgprot_dmacoherent(prot) (prot)
+#define pgprot_device(prot)	(prot)
 
 
 /*