From a2f526994e92ea54be181efccda261c4b1a6ae8d Mon Sep 17 00:00:00 2001
From: Steven Rostedt <srostedt@redhat.com>
Date: Fri, 1 Jul 2011 23:04:40 -0400
Subject: microblaze/irqs: Do not trace arch_local_{*,irq_*} functions

Do not trace arch_local_save_flags(), arch_local_irq_*() and friends.
Although they are marked inline, gcc may still make a function out of
them and add it to the pool of functions that are traced by the function
tracer. This can cause undesirable results (kernel panic, triple faults,
etc).

Add the notrace notation to prevent them from ever being traced.

Cc: Michal Simek <monstr@monstr.eu>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
---
 arch/microblaze/include/asm/irqflags.h | 20 ++++++++++----------
 1 file changed, 10 insertions(+), 10 deletions(-)

(limited to 'arch/microblaze')

diff --git a/arch/microblaze/include/asm/irqflags.h b/arch/microblaze/include/asm/irqflags.h
index c4532f0..c9a6262 100644
--- a/arch/microblaze/include/asm/irqflags.h
+++ b/arch/microblaze/include/asm/irqflags.h
@@ -14,7 +14,7 @@
 
 #if CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR
 
-static inline unsigned long arch_local_irq_save(void)
+static inline notrace unsigned long arch_local_irq_save(void)
 {
 	unsigned long flags;
 	asm volatile("	msrclr %0, %1	\n"
@@ -25,7 +25,7 @@ static inline unsigned long arch_local_irq_save(void)
 	return flags;
 }
 
-static inline void arch_local_irq_disable(void)
+static inline notrace void arch_local_irq_disable(void)
 {
 	/* this uses r0 without declaring it - is that correct? */
 	asm volatile("	msrclr r0, %0	\n"
@@ -35,7 +35,7 @@ static inline void arch_local_irq_disable(void)
 		     : "memory");
 }
 
-static inline void arch_local_irq_enable(void)
+static inline notrace void arch_local_irq_enable(void)
 {
 	/* this uses r0 without declaring it - is that correct? */
 	asm volatile("	msrset	r0, %0	\n"
@@ -47,7 +47,7 @@ static inline void arch_local_irq_enable(void)
 
 #else /* !CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR */
 
-static inline unsigned long arch_local_irq_save(void)
+static inline notrace unsigned long arch_local_irq_save(void)
 {
 	unsigned long flags, tmp;
 	asm volatile ("	mfs	%0, rmsr	\n"
@@ -61,7 +61,7 @@ static inline unsigned long arch_local_irq_save(void)
 	return flags;
 }
 
-static inline void arch_local_irq_disable(void)
+static inline notrace void arch_local_irq_disable(void)
 {
 	unsigned long tmp;
 	asm volatile("	mfs	%0, rmsr	\n"
@@ -74,7 +74,7 @@ static inline void arch_local_irq_disable(void)
 		     : "memory");
 }
 
-static inline void arch_local_irq_enable(void)
+static inline notrace void arch_local_irq_enable(void)
 {
 	unsigned long tmp;
 	asm volatile("	mfs	%0, rmsr	\n"
@@ -89,7 +89,7 @@ static inline void arch_local_irq_enable(void)
 
 #endif /* CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR */
 
-static inline unsigned long arch_local_save_flags(void)
+static inline notrace unsigned long arch_local_save_flags(void)
 {
 	unsigned long flags;
 	asm volatile("	mfs	%0, rmsr	\n"
@@ -100,7 +100,7 @@ static inline unsigned long arch_local_save_flags(void)
 	return flags;
 }
 
-static inline void arch_local_irq_restore(unsigned long flags)
+static inline notrace void arch_local_irq_restore(unsigned long flags)
 {
 	asm volatile("	mts	rmsr, %0	\n"
 		     "	nop			\n"
@@ -109,12 +109,12 @@ static inline void arch_local_irq_restore(unsigned long flags)
 		     : "memory");
 }
 
-static inline bool arch_irqs_disabled_flags(unsigned long flags)
+static inline notrace bool arch_irqs_disabled_flags(unsigned long flags)
 {
 	return (flags & MSR_IE) == 0;
 }
 
-static inline bool arch_irqs_disabled(void)
+static inline notrace bool arch_irqs_disabled(void)
 {
 	return arch_irqs_disabled_flags(arch_local_save_flags());
 }
-- 
cgit v1.1


From c11389406f19e4bddc7b347e5259aebda02b23f1 Mon Sep 17 00:00:00 2001
From: Michal Simek <monstr@monstr.eu>
Date: Fri, 20 May 2011 09:02:13 +0200
Subject: microblaze: Fix unaligned value saving to the stack for system with
 MMU

Several registers weren't saved correctly to the stack.

Unaligned expection for system with MMU stores
value in ex_tmp_data_loc_X address which is load to registers r3.
The next step is to move this value from r3 to a destination
register which caused unaligned exception. For several registers
this value was directly moved to the register.

For example for r28:
by "or r28, r0, r3"

but register r28 was rewritten when kernel returns from exception
handler by value saved on stack.

This patch changed r3 saving to the correct address on the stack.
For example for r28:
by "swi r3, r1, 4 * 28"

When kernel returns from the exception handler, correct value is restored.

Signed-off-by: Michal Simek <monstr@monstr.eu>
---
 arch/microblaze/kernel/hw_exception_handler.S | 56 +++++++++++++--------------
 1 file changed, 28 insertions(+), 28 deletions(-)

(limited to 'arch/microblaze')

diff --git a/arch/microblaze/kernel/hw_exception_handler.S b/arch/microblaze/kernel/hw_exception_handler.S
index 56572e9..e62be83 100644
--- a/arch/microblaze/kernel/hw_exception_handler.S
+++ b/arch/microblaze/kernel/hw_exception_handler.S
@@ -1113,23 +1113,23 @@ lw_r10_vm:	R3_TO_LWREG_VM_V	(10);
 lw_r11_vm:	R3_TO_LWREG_VM_V	(11);
 lw_r12_vm:	R3_TO_LWREG_VM_V	(12);
 lw_r13_vm:	R3_TO_LWREG_VM_V	(13);
-lw_r14_vm:	R3_TO_LWREG_VM		(14);
+lw_r14_vm:	R3_TO_LWREG_VM_V	(14);
 lw_r15_vm:	R3_TO_LWREG_VM_V	(15);
-lw_r16_vm:	R3_TO_LWREG_VM		(16);
+lw_r16_vm:	R3_TO_LWREG_VM_V	(16);
 lw_r17_vm:	R3_TO_LWREG_VM_V	(17);
 lw_r18_vm:	R3_TO_LWREG_VM_V	(18);
-lw_r19_vm:	R3_TO_LWREG_VM		(19);
-lw_r20_vm:	R3_TO_LWREG_VM		(20);
-lw_r21_vm:	R3_TO_LWREG_VM		(21);
-lw_r22_vm:	R3_TO_LWREG_VM		(22);
-lw_r23_vm:	R3_TO_LWREG_VM		(23);
-lw_r24_vm:	R3_TO_LWREG_VM		(24);
-lw_r25_vm:	R3_TO_LWREG_VM		(25);
-lw_r26_vm:	R3_TO_LWREG_VM		(26);
-lw_r27_vm:	R3_TO_LWREG_VM		(27);
-lw_r28_vm:	R3_TO_LWREG_VM		(28);
-lw_r29_vm:	R3_TO_LWREG_VM		(29);
-lw_r30_vm:	R3_TO_LWREG_VM		(30);
+lw_r19_vm:	R3_TO_LWREG_VM_V	(19);
+lw_r20_vm:	R3_TO_LWREG_VM_V	(20);
+lw_r21_vm:	R3_TO_LWREG_VM_V	(21);
+lw_r22_vm:	R3_TO_LWREG_VM_V	(22);
+lw_r23_vm:	R3_TO_LWREG_VM_V	(23);
+lw_r24_vm:	R3_TO_LWREG_VM_V	(24);
+lw_r25_vm:	R3_TO_LWREG_VM_V	(25);
+lw_r26_vm:	R3_TO_LWREG_VM_V	(26);
+lw_r27_vm:	R3_TO_LWREG_VM_V	(27);
+lw_r28_vm:	R3_TO_LWREG_VM_V	(28);
+lw_r29_vm:	R3_TO_LWREG_VM_V	(29);
+lw_r30_vm:	R3_TO_LWREG_VM_V	(30);
 lw_r31_vm:	R3_TO_LWREG_VM_V	(31);
 
 sw_table_vm:
@@ -1147,23 +1147,23 @@ sw_r10_vm:	SWREG_TO_R3_VM_V	(10);
 sw_r11_vm:	SWREG_TO_R3_VM_V	(11);
 sw_r12_vm:	SWREG_TO_R3_VM_V	(12);
 sw_r13_vm:	SWREG_TO_R3_VM_V	(13);
-sw_r14_vm:	SWREG_TO_R3_VM		(14);
+sw_r14_vm:	SWREG_TO_R3_VM_V	(14);
 sw_r15_vm:	SWREG_TO_R3_VM_V	(15);
-sw_r16_vm:	SWREG_TO_R3_VM		(16);
+sw_r16_vm:	SWREG_TO_R3_VM_V	(16);
 sw_r17_vm:	SWREG_TO_R3_VM_V	(17);
 sw_r18_vm:	SWREG_TO_R3_VM_V	(18);
-sw_r19_vm:	SWREG_TO_R3_VM		(19);
-sw_r20_vm:	SWREG_TO_R3_VM		(20);
-sw_r21_vm:	SWREG_TO_R3_VM		(21);
-sw_r22_vm:	SWREG_TO_R3_VM		(22);
-sw_r23_vm:	SWREG_TO_R3_VM		(23);
-sw_r24_vm:	SWREG_TO_R3_VM		(24);
-sw_r25_vm:	SWREG_TO_R3_VM		(25);
-sw_r26_vm:	SWREG_TO_R3_VM		(26);
-sw_r27_vm:	SWREG_TO_R3_VM		(27);
-sw_r28_vm:	SWREG_TO_R3_VM		(28);
-sw_r29_vm:	SWREG_TO_R3_VM		(29);
-sw_r30_vm:	SWREG_TO_R3_VM		(30);
+sw_r19_vm:	SWREG_TO_R3_VM_V	(19);
+sw_r20_vm:	SWREG_TO_R3_VM_V	(20);
+sw_r21_vm:	SWREG_TO_R3_VM_V	(21);
+sw_r22_vm:	SWREG_TO_R3_VM_V	(22);
+sw_r23_vm:	SWREG_TO_R3_VM_V	(23);
+sw_r24_vm:	SWREG_TO_R3_VM_V	(24);
+sw_r25_vm:	SWREG_TO_R3_VM_V	(25);
+sw_r26_vm:	SWREG_TO_R3_VM_V	(26);
+sw_r27_vm:	SWREG_TO_R3_VM_V	(27);
+sw_r28_vm:	SWREG_TO_R3_VM_V	(28);
+sw_r29_vm:	SWREG_TO_R3_VM_V	(29);
+sw_r30_vm:	SWREG_TO_R3_VM_V	(30);
 sw_r31_vm:	SWREG_TO_R3_VM_V	(31);
 #endif /* CONFIG_MMU */
 
-- 
cgit v1.1


From 504a84c4806af58ae842b8716f603baad2757dd9 Mon Sep 17 00:00:00 2001
From: Mathias Krause <minipli@googlemail.com>
Date: Wed, 8 Jun 2011 14:30:05 +0200
Subject: microblaze: Remove duplicated prototype of start_thread()

The prototype for start_thread() is already present in the MMU/NOMMU
independent part of the file. Remove the duplicate.

Signed-off-by: Mathias Krause <minipli@googlemail.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
---
 arch/microblaze/include/asm/processor.h | 3 ---
 1 file changed, 3 deletions(-)

(limited to 'arch/microblaze')

diff --git a/arch/microblaze/include/asm/processor.h b/arch/microblaze/include/asm/processor.h
index aed2a6b..7283bfb 100644
--- a/arch/microblaze/include/asm/processor.h
+++ b/arch/microblaze/include/asm/processor.h
@@ -125,9 +125,6 @@ struct thread_struct {
 	.pgdir = swapper_pg_dir, \
 }
 
-/* Do necessary setup to start up a newly executed thread.  */
-void start_thread(struct pt_regs *regs,
-		unsigned long pc, unsigned long usp);
 
 /* Free all resources held by a thread. */
 extern inline void release_thread(struct task_struct *dead_task)
-- 
cgit v1.1


From a0ec99bda8d42001dc37191f1282a401d2f6e4e1 Mon Sep 17 00:00:00 2001
From: Mathias Krause <minipli@googlemail.com>
Date: Fri, 10 Jun 2011 15:09:59 +0200
Subject: microblaze: exec: Remove redundant set_fs(USER_DS)

The address limit is already set in flush_old_exec() so this
set_fs(USER_DS) is redundant.

Signed-off-by: Mathias Krause <minipli@googlemail.com>
---
 arch/microblaze/kernel/process.c | 1 -
 1 file changed, 1 deletion(-)

(limited to 'arch/microblaze')

diff --git a/arch/microblaze/kernel/process.c b/arch/microblaze/kernel/process.c
index 968648a..dbb8124 100644
--- a/arch/microblaze/kernel/process.c
+++ b/arch/microblaze/kernel/process.c
@@ -237,7 +237,6 @@ unsigned long get_wchan(struct task_struct *p)
 /* Set up a thread for executing a new program */
 void start_thread(struct pt_regs *regs, unsigned long pc, unsigned long usp)
 {
-	set_fs(USER_DS);
 	regs->pc = pc;
 	regs->r1 = usp;
 	regs->pt_mode = 0;
-- 
cgit v1.1


From 5db34eb92f5699361de355dcd7958fdd2a9fb98a Mon Sep 17 00:00:00 2001
From: Michal Simek <monstr@monstr.eu>
Date: Tue, 12 Jul 2011 12:36:29 +0200
Subject: microblaze: trivial: Fix typo fault

descrtiption -> description

Signed-off-by: Michal Simek <monstr@monstr.eu>
---
 arch/microblaze/include/asm/pvr.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'arch/microblaze')

diff --git a/arch/microblaze/include/asm/pvr.h b/arch/microblaze/include/asm/pvr.h
index a10bec6..56a80e45 100644
--- a/arch/microblaze/include/asm/pvr.h
+++ b/arch/microblaze/include/asm/pvr.h
@@ -111,7 +111,7 @@ struct pvr_s {
 /* Target family PVR mask */
 #define PVR10_TARGET_FAMILY_MASK	0xFF000000
 
-/* MMU descrtiption */
+/* MMU description */
 #define PVR11_USE_MMU			0xC0000000
 #define PVR11_MMU_ITLB_SIZE		0x38000000
 #define PVR11_MMU_DTLB_SIZE		0x07000000
-- 
cgit v1.1


From 8904976e8ca45be3ec75acc71f5d855ef671a079 Mon Sep 17 00:00:00 2001
From: "John A. Williams" <john.williams@petalogix.com>
Date: Tue, 24 May 2011 18:57:11 +1000
Subject: microblaze: Unprivileged stream instruction awareness

Add cpuinfo support for the new MicroBlaze option permitting userspace
(unprivileged) access to the streaming instructions (FSL / AXI-stream).

Emit a noisy warning at bootup if this is enabled, because bad user code
can potentially lockup the CPU.

Signed-off-by: John A. Williams <john.williams@petalogix.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
---
 arch/microblaze/include/asm/cpuinfo.h         | 1 +
 arch/microblaze/include/asm/pvr.h             | 3 ++-
 arch/microblaze/kernel/cpu/cpuinfo-pvr-full.c | 1 +
 arch/microblaze/kernel/cpu/cpuinfo-static.c   | 1 +
 arch/microblaze/kernel/cpu/cpuinfo.c          | 4 ++++
 arch/microblaze/kernel/cpu/mb.c               | 4 ++++
 6 files changed, 13 insertions(+), 1 deletion(-)

(limited to 'arch/microblaze')

diff --git a/arch/microblaze/include/asm/cpuinfo.h b/arch/microblaze/include/asm/cpuinfo.h
index d8f0133..7d6831a 100644
--- a/arch/microblaze/include/asm/cpuinfo.h
+++ b/arch/microblaze/include/asm/cpuinfo.h
@@ -38,6 +38,7 @@ struct cpuinfo {
 	u32 use_exc;
 	u32 ver_code;
 	u32 mmu;
+	u32 mmu_privins;
 	u32 endian;
 
 	/* CPU caches */
diff --git a/arch/microblaze/include/asm/pvr.h b/arch/microblaze/include/asm/pvr.h
index 56a80e45..4bbdb4c 100644
--- a/arch/microblaze/include/asm/pvr.h
+++ b/arch/microblaze/include/asm/pvr.h
@@ -117,10 +117,10 @@ struct pvr_s {
 #define PVR11_MMU_DTLB_SIZE		0x07000000
 #define PVR11_MMU_TLB_ACCESS		0x00C00000
 #define PVR11_MMU_ZONES			0x003C0000
+#define PVR11_MMU_PRIVINS		0x00010000
 /* MSR Reset value PVR mask */
 #define PVR11_MSR_RESET_VALUE_MASK	0x000007FF
 
-
 /* PVR access macros */
 #define PVR_IS_FULL(_pvr)	(_pvr.pvr[0] & PVR0_PVR_FULL_MASK)
 #define PVR_USE_BARREL(_pvr)	(_pvr.pvr[0] & PVR0_USE_BARREL_MASK)
@@ -216,6 +216,7 @@ struct pvr_s {
 #define PVR_MMU_DTLB_SIZE(_pvr)		(_pvr.pvr[11] & PVR11_MMU_DTLB_SIZE)
 #define PVR_MMU_TLB_ACCESS(_pvr)	(_pvr.pvr[11] & PVR11_MMU_TLB_ACCESS)
 #define PVR_MMU_ZONES(_pvr)		(_pvr.pvr[11] & PVR11_MMU_ZONES)
+#define PVR_MMU_PRIVINS(pvr)		(pvr.pvr[11] & PVR11_MMU_PRIVINS)
 
 /* endian */
 #define PVR_ENDIAN(_pvr)	(_pvr.pvr[0] & PVR0_ENDI)
diff --git a/arch/microblaze/kernel/cpu/cpuinfo-pvr-full.c b/arch/microblaze/kernel/cpu/cpuinfo-pvr-full.c
index f70a604..916aaed 100644
--- a/arch/microblaze/kernel/cpu/cpuinfo-pvr-full.c
+++ b/arch/microblaze/kernel/cpu/cpuinfo-pvr-full.c
@@ -72,6 +72,7 @@ void set_cpuinfo_pvr_full(struct cpuinfo *ci, struct device_node *cpu)
 	CI(pvr_user2, USER2);
 
 	CI(mmu, USE_MMU);
+	CI(mmu_privins, MMU_PRIVINS);
 	CI(endian, ENDIAN);
 
 	CI(use_icache, USE_ICACHE);
diff --git a/arch/microblaze/kernel/cpu/cpuinfo-static.c b/arch/microblaze/kernel/cpu/cpuinfo-static.c
index b16b994..592bb2e 100644
--- a/arch/microblaze/kernel/cpu/cpuinfo-static.c
+++ b/arch/microblaze/kernel/cpu/cpuinfo-static.c
@@ -119,6 +119,7 @@ void __init set_cpuinfo_static(struct cpuinfo *ci, struct device_node *cpu)
 	ci->pvr_user2 = fcpu(cpu, "xlnx,pvr-user2");
 
 	ci->mmu = fcpu(cpu, "xlnx,use-mmu");
+	ci->mmu_privins = fcpu(cpu, "xlnx,mmu-privileged-instr");
 	ci->endian = fcpu(cpu, "xlnx,endianness");
 
 	ci->ver_code = 0;
diff --git a/arch/microblaze/kernel/cpu/cpuinfo.c b/arch/microblaze/kernel/cpu/cpuinfo.c
index c1640c5..44394d8 100644
--- a/arch/microblaze/kernel/cpu/cpuinfo.c
+++ b/arch/microblaze/kernel/cpu/cpuinfo.c
@@ -88,4 +88,8 @@ void __init setup_cpuinfo(void)
 		printk(KERN_WARNING "%s: Unsupported PVR setting\n", __func__);
 		set_cpuinfo_static(&cpuinfo, cpu);
 	}
+
+	if (cpuinfo.mmu_privins)
+		printk(KERN_WARNING "%s: Stream instructions enabled"
+			" - USERSPACE CAN LOCK THIS KERNEL!\n", __func__);
 }
diff --git a/arch/microblaze/kernel/cpu/mb.c b/arch/microblaze/kernel/cpu/mb.c
index b4048af..0afebae 100644
--- a/arch/microblaze/kernel/cpu/mb.c
+++ b/arch/microblaze/kernel/cpu/mb.c
@@ -97,6 +97,10 @@ static int show_cpuinfo(struct seq_file *m, void *v)
 		(cpuinfo.use_exc & PVR2_FPU_EXC_MASK) ? "fpu " : "",
 		(cpuinfo.use_exc & PVR2_USE_FSL_EXC) ? "fsl " : "");
 
+	count += seq_printf(m,
+			"Stream-insns:\t%sprivileged\n",
+			cpuinfo.mmu_privins ? "un" : "");
+
 	if (cpuinfo.use_icache)
 		count += seq_printf(m,
 				"Icache:\t\t%ukB\tline length:\t%dB\n",
-- 
cgit v1.1


From 95ce618f85a86a7383c1a3e39278be3de84b1b99 Mon Sep 17 00:00:00 2001
From: "John A. Williams" <john.williams@petalogix.com>
Date: Tue, 24 May 2011 18:59:45 +1000
Subject: microblaze: Standardise cpuinfo output for cache policy

The current cpuinfo output for the cache policy has no leading tag:, making
it difficult to parse.  Add a leaning "Dcache-policy:" tag to this field.

Signed-off-by: John A. Williams <john.williams@petalogix.com>
---
 arch/microblaze/kernel/cpu/mb.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

(limited to 'arch/microblaze')

diff --git a/arch/microblaze/kernel/cpu/mb.c b/arch/microblaze/kernel/cpu/mb.c
index 0afebae..7b5dca7 100644
--- a/arch/microblaze/kernel/cpu/mb.c
+++ b/arch/microblaze/kernel/cpu/mb.c
@@ -114,10 +114,11 @@ static int show_cpuinfo(struct seq_file *m, void *v)
 				"Dcache:\t\t%ukB\tline length:\t%dB\n",
 				cpuinfo.dcache_size >> 10,
 				cpuinfo.dcache_line_length);
+		seq_printf(m, "Dcache-Policy:\t");
 		if (cpuinfo.dcache_wb)
-			count += seq_printf(m, "\t\twrite-back\n");
+			count += seq_printf(m, "write-back\n");
 		else
-			count += seq_printf(m, "\t\twrite-through\n");
+			count += seq_printf(m, "write-through\n");
 	} else
 		count += seq_printf(m, "Dcache:\t\tno\n");
 
-- 
cgit v1.1


From e721a45fbed13a52093d2cc1962dbb8a754462ea Mon Sep 17 00:00:00 2001
From: Michal Simek <monstr@monstr.eu>
Date: Mon, 4 Apr 2011 15:45:06 +0200
Subject: microblaze: Get early printk console earlier

1. Register early console as standard console
2. Enable CON_BOOT console flag to ensure auto-unregistering by the kernel
3. remap_early_printk function remap physical console baseaddr to virtual space

Usage specific function for console remap is done after memory initialization
with IRQ turn off that's why there is not necessary to protect it.

The reason for remapping is that the kernel use TLB 63 for 1:1 address mapping
to be able to use console in very early boot-up phase. But allocating one TLB
just for console caused performance degression that's why ioremaps create new
mapping and TLB 63 is automatically released and ready to use.

Signed-off-by: Michal Simek <monstr@monstr.eu>
CC: Russell King <linux@arm.linux.org.uk>
CC: Ralf Baechle <ralf@linux-mips.org>
CC: Ingo Molnar <mingo@redhat.com>
CC: Alan Cox <alan@linux.intel.com>
CC: <linux-serial@vger.kernel.org>
CC: Arnd Bergmann <arnd@arndb.de>
---
 arch/microblaze/include/asm/setup.h   |  1 +
 arch/microblaze/kernel/early_printk.c | 20 ++++++++++++++++----
 arch/microblaze/kernel/setup.c        |  5 +++++
 3 files changed, 22 insertions(+), 4 deletions(-)

(limited to 'arch/microblaze')

diff --git a/arch/microblaze/include/asm/setup.h b/arch/microblaze/include/asm/setup.h
index 8f39689..904e5ef 100644
--- a/arch/microblaze/include/asm/setup.h
+++ b/arch/microblaze/include/asm/setup.h
@@ -23,6 +23,7 @@ extern char cmd_line[COMMAND_LINE_SIZE];
 void early_printk(const char *fmt, ...);
 
 int setup_early_printk(char *opt);
+void remap_early_printk(void);
 void disable_early_printk(void);
 
 #if defined(CONFIG_EARLY_PRINTK)
diff --git a/arch/microblaze/kernel/early_printk.c b/arch/microblaze/kernel/early_printk.c
index c3616a08..8f8384e 100644
--- a/arch/microblaze/kernel/early_printk.c
+++ b/arch/microblaze/kernel/early_printk.c
@@ -60,7 +60,7 @@ static void early_printk_uartlite_write(struct console *unused,
 static struct console early_serial_uartlite_console = {
 	.name = "earlyser",
 	.write = early_printk_uartlite_write,
-	.flags = CON_PRINTBUFFER,
+	.flags = CON_PRINTBUFFER | CON_BOOT,
 	.index = -1,
 };
 #endif /* CONFIG_SERIAL_UARTLITE_CONSOLE */
@@ -104,7 +104,7 @@ static void early_printk_uart16550_write(struct console *unused,
 static struct console early_serial_uart16550_console = {
 	.name = "earlyser",
 	.write = early_printk_uart16550_write,
-	.flags = CON_PRINTBUFFER,
+	.flags = CON_PRINTBUFFER | CON_BOOT,
 	.index = -1,
 };
 #endif /* CONFIG_SERIAL_8250_CONSOLE */
@@ -141,7 +141,7 @@ int __init setup_early_printk(char *opt)
 		early_printk("early_printk_console is enabled at 0x%08x\n",
 							base_addr);
 
-		/* register_console(early_console); */
+		register_console(early_console);
 
 		return 0;
 	}
@@ -160,7 +160,7 @@ int __init setup_early_printk(char *opt)
 		early_printk("early_printk_console is enabled at 0x%08x\n",
 							base_addr);
 
-		/* register_console(early_console); */
+		register_console(early_console);
 
 		return 0;
 	}
@@ -169,6 +169,18 @@ int __init setup_early_printk(char *opt)
 	return 1;
 }
 
+/* Remap early console to virtual address and do not allocate one TLB
+ * only for early console because of performance degression */
+void __init remap_early_printk(void)
+{
+	if (!early_console_initialized || !early_console)
+		return;
+	printk(KERN_INFO "early_printk_console remaping from 0x%x to ",
+								base_addr);
+	base_addr = (u32) ioremap(base_addr, PAGE_SIZE);
+	printk(KERN_CONT "0x%x\n", base_addr);
+}
+
 void __init disable_early_printk(void)
 {
 	if (!early_console_initialized || !early_console)
diff --git a/arch/microblaze/kernel/setup.c b/arch/microblaze/kernel/setup.c
index 8e2c09b..0e654a1 100644
--- a/arch/microblaze/kernel/setup.c
+++ b/arch/microblaze/kernel/setup.c
@@ -59,6 +59,11 @@ void __init setup_arch(char **cmdline_p)
 
 	setup_memory();
 
+#ifdef CONFIG_EARLY_PRINTK
+	/* remap early console to virtual address */
+	remap_early_printk();
+#endif
+
 	xilinx_pci_init();
 
 #if defined(CONFIG_SELFMOD_INTC) || defined(CONFIG_SELFMOD_TIMER)
-- 
cgit v1.1


From 2aa8e37596933a43fc3e46e1e385045635674429 Mon Sep 17 00:00:00 2001
From: Michal Simek <monstr@monstr.eu>
Date: Thu, 14 Apr 2011 11:48:43 +0200
Subject: microblaze: Simplify early console binding from DT

Recognize early Linux console from chosen - linux,stdout-path
instead of detecting the first console with appropriate
compatible strings.
This patch solved the problem on system with multiple
consoles.

Signed-off-by: Michal Simek <monstr@monstr.eu>
---
 arch/microblaze/include/asm/prom.h    |  8 ++-
 arch/microblaze/kernel/early_printk.c | 48 ++++++++----------
 arch/microblaze/kernel/prom.c         | 96 +++++++++++++++--------------------
 3 files changed, 70 insertions(+), 82 deletions(-)

(limited to 'arch/microblaze')

diff --git a/arch/microblaze/include/asm/prom.h b/arch/microblaze/include/asm/prom.h
index d0890d3..34c4e8b 100644
--- a/arch/microblaze/include/asm/prom.h
+++ b/arch/microblaze/include/asm/prom.h
@@ -26,8 +26,12 @@
 #define HAVE_ARCH_DEVTREE_FIXUPS
 
 /* Other Prototypes */
-extern int early_uartlite_console(void);
-extern int early_uart16550_console(void);
+enum early_consoles {
+	UARTLITE = 1,
+	UART16550 = 2,
+};
+
+extern int of_early_console(void *version);
 
 #ifdef CONFIG_PCI
 /*
diff --git a/arch/microblaze/kernel/early_printk.c b/arch/microblaze/kernel/early_printk.c
index 8f8384e..e21390d 100644
--- a/arch/microblaze/kernel/early_printk.c
+++ b/arch/microblaze/kernel/early_printk.c
@@ -127,45 +127,41 @@ void early_printk(const char *fmt, ...)
 
 int __init setup_early_printk(char *opt)
 {
+	int version = 0;
+
 	if (early_console_initialized)
 		return 1;
 
-#ifdef CONFIG_SERIAL_UARTLITE_CONSOLE
-	base_addr = early_uartlite_console();
+	base_addr = of_early_console(&version);
 	if (base_addr) {
-		early_console_initialized = 1;
 #ifdef CONFIG_MMU
 		early_console_reg_tlb_alloc(base_addr);
 #endif
-		early_console = &early_serial_uartlite_console;
-		early_printk("early_printk_console is enabled at 0x%08x\n",
-							base_addr);
-
-		register_console(early_console);
-
-		return 0;
-	}
-#endif /* CONFIG_SERIAL_UARTLITE_CONSOLE */
-
+		switch (version) {
+#ifdef CONFIG_SERIAL_UARTLITE_CONSOLE
+		case UARTLITE:
+			printk(KERN_INFO "Early console on uartlite "
+						"at 0x%08x\n", base_addr);
+			early_console = &early_serial_uartlite_console;
+			break;
+#endif
 #ifdef CONFIG_SERIAL_8250_CONSOLE
-	base_addr = early_uart16550_console();
-	base_addr &= ~3; /* clear register offset */
-	if (base_addr) {
-		early_console_initialized = 1;
-#ifdef CONFIG_MMU
-		early_console_reg_tlb_alloc(base_addr);
+		case UART16550:
+			printk(KERN_INFO "Early console on uart16650 "
+						"at 0x%08x\n", base_addr);
+			early_console = &early_serial_uart16550_console;
+			break;
 #endif
-		early_console = &early_serial_uart16550_console;
-
-		early_printk("early_printk_console is enabled at 0x%08x\n",
-							base_addr);
+		default:
+			printk(KERN_INFO  "Unsupported early console %d\n",
+								version);
+			return 1;
+		}
 
 		register_console(early_console);
-
+		early_console_initialized = 1;
 		return 0;
 	}
-#endif /* CONFIG_SERIAL_8250_CONSOLE */
-
 	return 1;
 }
 
diff --git a/arch/microblaze/kernel/prom.c b/arch/microblaze/kernel/prom.c
index b15cc21..18d9371 100644
--- a/arch/microblaze/kernel/prom.c
+++ b/arch/microblaze/kernel/prom.c
@@ -53,69 +53,57 @@ void * __init early_init_dt_alloc_memory_arch(u64 size, u64 align)
 }
 
 #ifdef CONFIG_EARLY_PRINTK
-/* MS this is Microblaze specifig function */
-static int __init early_init_dt_scan_serial(unsigned long node,
-				const char *uname, int depth, void *data)
-{
-	unsigned long l;
-	char *p;
-	const __be32 *addr;
-
-	pr_debug("search \"serial\", depth: %d, uname: %s\n", depth, uname);
-
-/* find all serial nodes */
-	if (strncmp(uname, "serial", 6) != 0)
-		return 0;
-
-/* find compatible node with uartlite */
-	p = of_get_flat_dt_prop(node, "compatible", &l);
-	if ((strncmp(p, "xlnx,xps-uartlite", 17) != 0) &&
-			(strncmp(p, "xlnx,opb-uartlite", 17) != 0) &&
-			(strncmp(p, "xlnx,axi-uartlite", 17) != 0))
-		return 0;
-
-	addr = of_get_flat_dt_prop(node, "reg", &l);
-	return be32_to_cpup(addr); /* return address */
-}
+char *stdout;
 
-/* this function is looking for early uartlite console - Microblaze specific */
-int __init early_uartlite_console(void)
-{
-	return of_scan_flat_dt(early_init_dt_scan_serial, NULL);
-}
-
-/* MS this is Microblaze specifig function */
-static int __init early_init_dt_scan_serial_full(unsigned long node,
+int __init early_init_dt_scan_chosen_serial(unsigned long node,
 				const char *uname, int depth, void *data)
 {
 	unsigned long l;
 	char *p;
-	unsigned int addr;
-
-	pr_debug("search \"chosen\", depth: %d, uname: %s\n", depth, uname);
-
-/* find all serial nodes */
-	if (strncmp(uname, "serial", 6) != 0)
-		return 0;
 
-	early_init_dt_check_for_initrd(node);
-
-/* find compatible node with uartlite */
-	p = of_get_flat_dt_prop(node, "compatible", &l);
-
-	if ((strncmp(p, "xlnx,xps-uart16550", 18) != 0) &&
-		(strncmp(p, "xlnx,axi-uart16550", 18) != 0))
-		return 0;
-
-	addr = *(u32 *)of_get_flat_dt_prop(node, "reg", &l);
-	addr += *(u32 *)of_get_flat_dt_prop(node, "reg-offset", &l);
-	return be32_to_cpu(addr); /* return address */
+	pr_debug("%s: depth: %d, uname: %s\n", __func__, depth, uname);
+
+	if (depth == 1 && (strcmp(uname, "chosen") == 0 ||
+				strcmp(uname, "chosen@0") == 0)) {
+		p = of_get_flat_dt_prop(node, "linux,stdout-path", &l);
+		if (p != NULL && l > 0)
+			stdout = p; /* store pointer to stdout-path */
+	}
+
+	if (stdout && strstr(stdout, uname)) {
+		p = of_get_flat_dt_prop(node, "compatible", &l);
+		pr_debug("Compatible string: %s\n", p);
+
+		if ((strncmp(p, "xlnx,xps-uart16550", 18) == 0) ||
+			(strncmp(p, "xlnx,axi-uart16550", 18) == 0)) {
+			unsigned int addr;
+
+			*(u32 *)data = UART16550;
+
+			addr = *(u32 *)of_get_flat_dt_prop(node, "reg", &l);
+			addr += *(u32 *)of_get_flat_dt_prop(node,
+							"reg-offset", &l);
+			/* clear register offset */
+			return be32_to_cpu(addr) & ~3;
+		}
+		if ((strncmp(p, "xlnx,xps-uartlite", 17) == 0) ||
+				(strncmp(p, "xlnx,opb-uartlite", 17) == 0) ||
+				(strncmp(p, "xlnx,axi-uartlite", 17) == 0)) {
+			unsigned int *addrp;
+
+			*(u32 *)data = UARTLITE;
+
+			addrp = of_get_flat_dt_prop(node, "reg", &l);
+			return be32_to_cpup(addrp); /* return address */
+		}
+	}
+	return 0;
 }
 
-/* this function is looking for early uartlite console - Microblaze specific */
-int __init early_uart16550_console(void)
+/* this function is looking for early console - Microblaze specific */
+int __init of_early_console(void *version)
 {
-	return of_scan_flat_dt(early_init_dt_scan_serial_full, NULL);
+	return of_scan_flat_dt(early_init_dt_scan_chosen_serial, version);
 }
 #endif
 
-- 
cgit v1.1


From ca12adc8ca6814d1949fcc6d83c1adda6dc9e2ef Mon Sep 17 00:00:00 2001
From: Michal Simek <monstr@monstr.eu>
Date: Wed, 6 Apr 2011 13:06:45 +0200
Subject: microblaze: Add support for early console on mdm

Support mdm early console:
 - extend time for retries
 - add mdm compatible property

Signed-off-by: Michal Simek <monstr@monstr.eu>
---
 arch/microblaze/kernel/early_printk.c | 2 +-
 arch/microblaze/kernel/prom.c         | 3 ++-
 2 files changed, 3 insertions(+), 2 deletions(-)

(limited to 'arch/microblaze')

diff --git a/arch/microblaze/kernel/early_printk.c b/arch/microblaze/kernel/early_printk.c
index e21390d..d26d92d 100644
--- a/arch/microblaze/kernel/early_printk.c
+++ b/arch/microblaze/kernel/early_printk.c
@@ -35,7 +35,7 @@ static void early_printk_uartlite_putc(char c)
 	 * we'll never timeout on a working UART.
 	 */
 
-	unsigned retries = 10000;
+	unsigned retries = 1000000;
 	/* read status bit - 0x8 offset */
 	while (--retries && (in_be32(base_addr + 8) & (1 << 3)))
 		;
diff --git a/arch/microblaze/kernel/prom.c b/arch/microblaze/kernel/prom.c
index 18d9371..977484a 100644
--- a/arch/microblaze/kernel/prom.c
+++ b/arch/microblaze/kernel/prom.c
@@ -88,7 +88,8 @@ int __init early_init_dt_scan_chosen_serial(unsigned long node,
 		}
 		if ((strncmp(p, "xlnx,xps-uartlite", 17) == 0) ||
 				(strncmp(p, "xlnx,opb-uartlite", 17) == 0) ||
-				(strncmp(p, "xlnx,axi-uartlite", 17) == 0)) {
+				(strncmp(p, "xlnx,axi-uartlite", 17) == 0) ||
+				(strncmp(p, "xlnx,mdm", 8) == 0)) {
 			unsigned int *addrp;
 
 			*(u32 *)data = UARTLITE;
-- 
cgit v1.1


From c9d761b7c4b658a937a941aea2781f511a0ff3ec Mon Sep 17 00:00:00 2001
From: Michal Simek <monstr@monstr.eu>
Date: Tue, 12 Jul 2011 15:24:06 +0200
Subject: microblaze: PCI fix typo fault in of_node pointer moving into pci_bus

Bug introduces in:
powerpc/pci: Make both ppc32 and ppc64 use sysdata for pci_controller
(sha1: b5d937de0367d26f65b9af1aef5f2c34c1939be0)

Signed-off-by: Michal Simek <monstr@monstr.eu>
---
 arch/microblaze/pci/pci_32.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'arch/microblaze')

diff --git a/arch/microblaze/pci/pci_32.c b/arch/microblaze/pci/pci_32.c
index 92728a6..9fafb0d 100644
--- a/arch/microblaze/pci/pci_32.c
+++ b/arch/microblaze/pci/pci_32.c
@@ -332,7 +332,7 @@ static void __devinit pcibios_scan_phb(struct pci_controller *hose)
 		       hose->global_number);
 		return;
 	}
-	bus.dev->of_node = of_node_get(node);
+	bus->dev.of_node = of_node_get(node);
 	bus->secondary = hose->first_busno;
 	hose->bus = bus;
 
-- 
cgit v1.1


From 6dbd3085c3c3a53dfa4491ebcbf7847955b16f26 Mon Sep 17 00:00:00 2001
From: Michal Simek <monstr@monstr.eu>
Date: Tue, 26 Jul 2011 11:24:56 +0200
Subject: Revert "microblaze: PCI fix typo fault in of_node pointer moving into
 pci_bus"

This reverts commit c9d761b7c4b658a937a941aea2781f511a0ff3ec.

Ben' commit "microblaze/pci: Move the remains of pci_32.c to pci-common.c"
(sha1: bf13a6fa09b8db7f1fd59b5e2ed3674a89a6a25c)
completely removed pci_32.c that's why my fixing commit caused
the problem with merging and need to be revert.

Signed-off-by: Michal Simek <monstr@monstr.eu>
---
 arch/microblaze/pci/pci_32.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'arch/microblaze')

diff --git a/arch/microblaze/pci/pci_32.c b/arch/microblaze/pci/pci_32.c
index 9fafb0d..92728a6 100644
--- a/arch/microblaze/pci/pci_32.c
+++ b/arch/microblaze/pci/pci_32.c
@@ -332,7 +332,7 @@ static void __devinit pcibios_scan_phb(struct pci_controller *hose)
 		       hose->global_number);
 		return;
 	}
-	bus->dev.of_node = of_node_get(node);
+	bus.dev->of_node = of_node_get(node);
 	bus->secondary = hose->first_busno;
 	hose->bus = bus;
 
-- 
cgit v1.1


From 363922946f96ad1d6420107ebcfa9a95b659fe75 Mon Sep 17 00:00:00 2001
From: Michal Simek <monstr@monstr.eu>
Date: Wed, 27 Jul 2011 10:45:32 +0200
Subject: microblaze: Do not show error message for 32 interrupt lines

When interrupt controller uses 32 interrupts lines the kernel
show error message about mismatch in kind-of-intr parameter
because it exceeds u32. Recast fixs this issue.

Signed-off-by: Michal Simek <monstr@monstr.eu>
---
 arch/microblaze/kernel/intc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'arch/microblaze')

diff --git a/arch/microblaze/kernel/intc.c b/arch/microblaze/kernel/intc.c
index c88f066..eb41441 100644
--- a/arch/microblaze/kernel/intc.c
+++ b/arch/microblaze/kernel/intc.c
@@ -134,7 +134,7 @@ void __init init_IRQ(void)
 	intr_type =
 		be32_to_cpup(of_get_property(intc,
 						"xlnx,kind-of-intr", NULL));
-	if (intr_type >= (1 << (nr_irq + 1)))
+	if (intr_type > (u32)((1ULL << nr_irq) - 1))
 		printk(KERN_INFO " ERROR: Mismatch in kind-of-intr param\n");
 
 #ifdef CONFIG_SELFMOD_INTC
-- 
cgit v1.1