From b690c425fe07c725e7f1f7d40303588416cba67f Mon Sep 17 00:00:00 2001
From: Daniel Hellstrom <daniel@gaisler.com>
Date: Fri, 29 Oct 2010 13:25:24 -0700
Subject: [PATCH 01/10] SPARC/LEON: removed constant timer initialization as if
 HZ=100, now it reflects the value of HZ

Signed-off-by: Daniel Hellstrom <daniel@gaisler.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 arch/sparc/kernel/leon_kernel.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/sparc/kernel/leon_kernel.c b/arch/sparc/kernel/leon_kernel.c
index 2d51527d810f..f01c42661ee5 100644
--- a/arch/sparc/kernel/leon_kernel.c
+++ b/arch/sparc/kernel/leon_kernel.c
@@ -114,7 +114,7 @@ void __init leon_init_timers(irq_handler_t counter_fn)
 	if (leon3_gptimer_regs && leon3_irqctrl_regs) {
 		LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[0].val, 0);
 		LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[0].rld,
-				      (((1000000 / 100) - 1)));
+				      (((1000000 / HZ) - 1)));
 		LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[0].ctrl, 0);
 
 #ifdef CONFIG_SMP
@@ -128,7 +128,7 @@ void __init leon_init_timers(irq_handler_t counter_fn)
 		}
 
 		LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[1].val, 0);
-		LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[1].rld, (((1000000/100) - 1)));
+		LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[1].rld, (((1000000/HZ) - 1)));
 		LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[1].ctrl, 0);
 # endif
 

From ce05a94efaf71d562eeefd30d6bbc2ab42b06bac Mon Sep 17 00:00:00 2001
From: "David S. Miller" <davem@davemloft.net>
Date: Tue, 16 Nov 2010 12:08:23 -0800
Subject: [PATCH 02/10] sparc64: Delete prom_puts() unused.

Signed-off-by: David S. Miller <davem@davemloft.net>
---
 arch/sparc/prom/console_64.c | 16 ----------------
 1 file changed, 16 deletions(-)

diff --git a/arch/sparc/prom/console_64.c b/arch/sparc/prom/console_64.c
index 10322dc2f557..de67fc73d91e 100644
--- a/arch/sparc/prom/console_64.c
+++ b/arch/sparc/prom/console_64.c
@@ -81,19 +81,3 @@ prom_putchar(char c)
 {
 	prom_nbputchar(c);
 }
-
-void
-prom_puts(const char *s, int len)
-{
-	unsigned long args[7];
-
-	args[0] = (unsigned long) "write";
-	args[1] = 3;
-	args[2] = 1;
-	args[3] = (unsigned int) prom_stdout;
-	args[4] = (unsigned long) s;
-	args[5] = len;
-	args[6] = (unsigned long) -1;
-
-	p1275_cmd_direct(args);
-}

From 17d70d6df0c4ea7a203b444001572a91ad9c2bef Mon Sep 17 00:00:00 2001
From: "David S. Miller" <davem@davemloft.net>
Date: Tue, 16 Nov 2010 12:11:15 -0800
Subject: [PATCH 03/10] sparc: Remove prom_pathtoinode()

Unused.

Signed-off-by: David S. Miller <davem@davemloft.net>
---
 arch/sparc/include/asm/oplib_32.h |  1 -
 arch/sparc/include/asm/oplib_64.h |  1 -
 arch/sparc/prom/tree_32.c         | 16 ----------------
 arch/sparc/prom/tree_64.c         | 18 ------------------
 4 files changed, 36 deletions(-)

diff --git a/arch/sparc/include/asm/oplib_32.h b/arch/sparc/include/asm/oplib_32.h
index 51296a6f5005..b0f79beffc3b 100644
--- a/arch/sparc/include/asm/oplib_32.h
+++ b/arch/sparc/include/asm/oplib_32.h
@@ -238,7 +238,6 @@ extern int prom_node_has_property(phandle node, char *property);
 extern int prom_setprop(phandle node, const char *prop_name, char *prop_value,
 			int value_size);
 
-extern phandle prom_pathtoinode(char *path);
 extern phandle prom_inst2pkg(int);
 
 /* Dorking with Bus ranges... */
diff --git a/arch/sparc/include/asm/oplib_64.h b/arch/sparc/include/asm/oplib_64.h
index c9cc078e3e31..9b01a4b8ae18 100644
--- a/arch/sparc/include/asm/oplib_64.h
+++ b/arch/sparc/include/asm/oplib_64.h
@@ -279,7 +279,6 @@ extern phandle prom_finddevice(const char *name);
 extern int prom_setprop(phandle node, const char *prop_name, char *prop_value,
 			int value_size);
 
-extern phandle prom_pathtoinode(const char *path);
 extern phandle prom_inst2pkg(int);
 extern int prom_service_exists(const char *service_name);
 extern void prom_sun4v_guest_soft_state(void);
diff --git a/arch/sparc/prom/tree_32.c b/arch/sparc/prom/tree_32.c
index 63e08e149774..535e2e69ac1d 100644
--- a/arch/sparc/prom/tree_32.c
+++ b/arch/sparc/prom/tree_32.c
@@ -342,19 +342,3 @@ phandle prom_inst2pkg(int inst)
 	if (node == -1) return 0;
 	return node;
 }
-
-/* Return 'node' assigned to a particular prom 'path'
- * FIXME: Should work for v0 as well
- */
-phandle prom_pathtoinode(char *path)
-{
-	phandle node;
-	int inst;
-	
-	inst = prom_devopen (path);
-	if (inst == -1) return 0;
-	node = prom_inst2pkg (inst);
-	prom_devclose (inst);
-	if (node == -1) return 0;
-	return node;
-}
diff --git a/arch/sparc/prom/tree_64.c b/arch/sparc/prom/tree_64.c
index 691be68932f8..d93660048376 100644
--- a/arch/sparc/prom/tree_64.c
+++ b/arch/sparc/prom/tree_64.c
@@ -374,24 +374,6 @@ inline phandle prom_inst2pkg(int inst)
 	return node;
 }
 
-/* Return 'node' assigned to a particular prom 'path'
- * FIXME: Should work for v0 as well
- */
-phandle prom_pathtoinode(const char *path)
-{
-	phandle node;
-	int inst;
-
-	inst = prom_devopen (path);
-	if (inst == 0)
-		return 0;
-	node = prom_inst2pkg(inst);
-	prom_devclose(inst);
-	if (node == -1)
-		return 0;
-	return node;
-}
-
 int prom_ihandle2path(int handle, char *buffer, int bufsize)
 {
 	unsigned long args[7];

From b148246912bea92bde2a0cba125ca94f1f776b12 Mon Sep 17 00:00:00 2001
From: "David S. Miller" <davem@davemloft.net>
Date: Tue, 16 Nov 2010 12:23:20 -0800
Subject: [PATCH 04/10] sparc: Kill prom devops_{32,64}.c

Completely unused.

Signed-off-by: David S. Miller <davem@davemloft.net>
---
 arch/sparc/include/asm/oplib_32.h | 19 -------
 arch/sparc/include/asm/oplib_64.h | 21 --------
 arch/sparc/prom/Makefile          |  1 -
 arch/sparc/prom/devops_32.c       | 87 -------------------------------
 arch/sparc/prom/devops_64.c       | 67 ------------------------
 5 files changed, 195 deletions(-)
 delete mode 100644 arch/sparc/prom/devops_32.c
 delete mode 100644 arch/sparc/prom/devops_64.c

diff --git a/arch/sparc/include/asm/oplib_32.h b/arch/sparc/include/asm/oplib_32.h
index b0f79beffc3b..1d893fa6374c 100644
--- a/arch/sparc/include/asm/oplib_32.h
+++ b/arch/sparc/include/asm/oplib_32.h
@@ -60,25 +60,6 @@ extern char *prom_getbootargs(void);
 extern char *prom_mapio(char *virt_hint, int io_space, unsigned int phys_addr, unsigned int num_bytes);
 extern void prom_unmapio(char *virt_addr, unsigned int num_bytes);
 
-/* Device operations. */
-
-/* Open the device described by the passed string.  Note, that the format
- * of the string is different on V0 vs. V2->higher proms.  The caller must
- * know what he/she is doing!  Returns the device descriptor, an int.
- */
-extern int prom_devopen(char *device_string);
-
-/* Close a previously opened device described by the passed integer
- * descriptor.
- */
-extern int prom_devclose(int device_handle);
-
-/* Do a seek operation on the device described by the passed integer
- * descriptor.
- */
-extern void prom_seek(int device_handle, unsigned int seek_hival,
-		      unsigned int seek_lowval);
-
 /* Miscellaneous routines, don't really fit in any category per se. */
 
 /* Reboot the machine with the command line passed. */
diff --git a/arch/sparc/include/asm/oplib_64.h b/arch/sparc/include/asm/oplib_64.h
index 9b01a4b8ae18..8441d1aa31c8 100644
--- a/arch/sparc/include/asm/oplib_64.h
+++ b/arch/sparc/include/asm/oplib_64.h
@@ -67,27 +67,6 @@ extern void prom_init(void *cif_handler, void *cif_stack);
 /* Boot argument acquisition, returns the boot command line string. */
 extern char *prom_getbootargs(void);
 
-/* Device utilities. */
-
-/* Device operations. */
-
-/* Open the device described by the passed string.  Note, that the format
- * of the string is different on V0 vs. V2->higher proms.  The caller must
- * know what he/she is doing!  Returns the device descriptor, an int.
- */
-extern int prom_devopen(const char *device_string);
-
-/* Close a previously opened device described by the passed integer
- * descriptor.
- */
-extern int prom_devclose(int device_handle);
-
-/* Do a seek operation on the device described by the passed integer
- * descriptor.
- */
-extern void prom_seek(int device_handle, unsigned int seek_hival,
-		      unsigned int seek_lowval);
-
 /* Miscellaneous routines, don't really fit in any category per se. */
 
 /* Reboot the machine with the command line passed. */
diff --git a/arch/sparc/prom/Makefile b/arch/sparc/prom/Makefile
index 1b8c073adb44..816c0fa12dc0 100644
--- a/arch/sparc/prom/Makefile
+++ b/arch/sparc/prom/Makefile
@@ -6,7 +6,6 @@ ccflags := -Werror
 
 lib-y                 := bootstr_$(BITS).o
 lib-$(CONFIG_SPARC32) += devmap.o
-lib-y                 += devops_$(BITS).o
 lib-y                 += init_$(BITS).o
 lib-$(CONFIG_SPARC32) += memory.o
 lib-y                 += misc_$(BITS).o
diff --git a/arch/sparc/prom/devops_32.c b/arch/sparc/prom/devops_32.c
deleted file mode 100644
index 9c5d4687242a..000000000000
--- a/arch/sparc/prom/devops_32.c
+++ /dev/null
@@ -1,87 +0,0 @@
-/*
- * devops.c:  Device operations using the PROM.
- *
- * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
- */
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-
-#include <asm/openprom.h>
-#include <asm/oplib.h>
-
-extern void restore_current(void);
-
-/* Open the device described by the string 'dstr'.  Returns the handle
- * to that device used for subsequent operations on that device.
- * Returns -1 on failure.
- */
-int
-prom_devopen(char *dstr)
-{
-	int handle;
-	unsigned long flags;
-	spin_lock_irqsave(&prom_lock, flags);
-	switch(prom_vers) {
-	case PROM_V0:
-		handle = (*(romvec->pv_v0devops.v0_devopen))(dstr);
-		if(handle == 0) handle = -1;
-		break;
-	case PROM_V2:
-	case PROM_V3:
-		handle = (*(romvec->pv_v2devops.v2_dev_open))(dstr);
-		break;
-	default:
-		handle = -1;
-		break;
-	};
-	restore_current();
-	spin_unlock_irqrestore(&prom_lock, flags);
-
-	return handle;
-}
-
-/* Close the device described by device handle 'dhandle'. */
-int
-prom_devclose(int dhandle)
-{
-	unsigned long flags;
-	spin_lock_irqsave(&prom_lock, flags);
-	switch(prom_vers) {
-	case PROM_V0:
-		(*(romvec->pv_v0devops.v0_devclose))(dhandle);
-		break;
-	case PROM_V2:
-	case PROM_V3:
-		(*(romvec->pv_v2devops.v2_dev_close))(dhandle);
-		break;
-	default:
-		break;
-	};
-	restore_current();
-	spin_unlock_irqrestore(&prom_lock, flags);
-	return 0;
-}
-
-/* Seek to specified location described by 'seekhi' and 'seeklo'
- * for device 'dhandle'.
- */
-void
-prom_seek(int dhandle, unsigned int seekhi, unsigned int seeklo)
-{
-	unsigned long flags;
-	spin_lock_irqsave(&prom_lock, flags);
-	switch(prom_vers) {
-	case PROM_V0:
-		(*(romvec->pv_v0devops.v0_seekdev))(dhandle, seekhi, seeklo);
-		break;
-	case PROM_V2:
-	case PROM_V3:
-		(*(romvec->pv_v2devops.v2_dev_seek))(dhandle, seekhi, seeklo);
-		break;
-	default:
-		break;
-	};
-	restore_current();
-	spin_unlock_irqrestore(&prom_lock, flags);
-}
diff --git a/arch/sparc/prom/devops_64.c b/arch/sparc/prom/devops_64.c
deleted file mode 100644
index a017119e7ef1..000000000000
--- a/arch/sparc/prom/devops_64.c
+++ /dev/null
@@ -1,67 +0,0 @@
-/*
- * devops.c:  Device operations using the PROM.
- *
- * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
- * Copyright (C) 1996,1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
- */
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-
-#include <asm/openprom.h>
-#include <asm/oplib.h>
-
-/* Open the device described by the string 'dstr'.  Returns the handle
- * to that device used for subsequent operations on that device.
- * Returns 0 on failure.
- */
-int
-prom_devopen(const char *dstr)
-{
-	unsigned long args[5];
-
-	args[0] = (unsigned long) "open";
-	args[1] = 1;
-	args[2] = 1;
-	args[3] = (unsigned long) dstr;
-	args[4] = (unsigned long) -1;
-
-	p1275_cmd_direct(args);
-
-	return (int) args[4];
-}
-
-/* Close the device described by device handle 'dhandle'. */
-int
-prom_devclose(int dhandle)
-{
-	unsigned long args[4];
-
-	args[0] = (unsigned long) "close";
-	args[1] = 1;
-	args[2] = 0;
-	args[3] = (unsigned int) dhandle;
-
-	p1275_cmd_direct(args);
-
-	return 0;
-}
-
-/* Seek to specified location described by 'seekhi' and 'seeklo'
- * for device 'dhandle'.
- */
-void
-prom_seek(int dhandle, unsigned int seekhi, unsigned int seeklo)
-{
-	unsigned long args[7];
-
-	args[0] = (unsigned long) "seek";
-	args[1] = 3;
-	args[2] = 1;
-	args[3] = (unsigned int) dhandle;
-	args[4] = seekhi;
-	args[5] = seeklo;
-	args[6] = (unsigned long) -1;
-
-	p1275_cmd_direct(args);
-}

From f7b5f55ac1623dfde24ef5319ad77c1746645f3f Mon Sep 17 00:00:00 2001
From: "David S. Miller" <davem@davemloft.net>
Date: Tue, 16 Nov 2010 12:24:16 -0800
Subject: [PATCH 05/10] sparc64: Unexport prom_service_exists().

Only used by functions in misc_64.c so make it private
to that file.

Signed-off-by: David S. Miller <davem@davemloft.net>
---
 arch/sparc/include/asm/oplib_64.h | 1 -
 arch/sparc/prom/misc_64.c         | 2 +-
 2 files changed, 1 insertion(+), 2 deletions(-)

diff --git a/arch/sparc/include/asm/oplib_64.h b/arch/sparc/include/asm/oplib_64.h
index 8441d1aa31c8..daf02d314279 100644
--- a/arch/sparc/include/asm/oplib_64.h
+++ b/arch/sparc/include/asm/oplib_64.h
@@ -259,7 +259,6 @@ extern int prom_setprop(phandle node, const char *prop_name, char *prop_value,
 			int value_size);
 
 extern phandle prom_inst2pkg(int);
-extern int prom_service_exists(const char *service_name);
 extern void prom_sun4v_guest_soft_state(void);
 
 extern int prom_ihandle2path(int handle, char *buffer, int bufsize);
diff --git a/arch/sparc/prom/misc_64.c b/arch/sparc/prom/misc_64.c
index d24bc44e361e..b900fdf829a0 100644
--- a/arch/sparc/prom/misc_64.c
+++ b/arch/sparc/prom/misc_64.c
@@ -18,7 +18,7 @@
 #include <asm/system.h>
 #include <asm/ldc.h>
 
-int prom_service_exists(const char *service_name)
+static int prom_service_exists(const char *service_name)
 {
 	unsigned long args[5];
 

From c540ee70e49b573535c7ddfd0e9a0fc9d549c8b7 Mon Sep 17 00:00:00 2001
From: "David S. Miller" <davem@davemloft.net>
Date: Tue, 16 Nov 2010 12:50:19 -0800
Subject: [PATCH 06/10] sparc64: Delete prom_setcallback().

Unused.

Signed-off-by: David S. Miller <davem@davemloft.net>
---
 arch/sparc/include/asm/oplib_64.h |  8 --------
 arch/sparc/prom/misc_64.c         | 14 --------------
 2 files changed, 22 deletions(-)

diff --git a/arch/sparc/include/asm/oplib_64.h b/arch/sparc/include/asm/oplib_64.h
index daf02d314279..56985e300471 100644
--- a/arch/sparc/include/asm/oplib_64.h
+++ b/arch/sparc/include/asm/oplib_64.h
@@ -88,14 +88,6 @@ extern void prom_halt(void) __attribute__ ((noreturn));
 /* Halt and power-off the machine. */
 extern void prom_halt_power_off(void) __attribute__ ((noreturn));
 
-/* Set the PROM 'sync' callback function to the passed function pointer.
- * When the user gives the 'sync' command at the prom prompt while the
- * kernel is still active, the prom will call this routine.
- *
- */
-typedef int (*callback_func_t)(long *cmd);
-extern void prom_setcallback(callback_func_t func_ptr);
-
 /* Acquire the IDPROM of the root node in the prom device tree.  This
  * gets passed a buffer where you would like it stuffed.  The return value
  * is the format type of this idprom or 0xff on error.
diff --git a/arch/sparc/prom/misc_64.c b/arch/sparc/prom/misc_64.c
index b900fdf829a0..e4f31d4d3715 100644
--- a/arch/sparc/prom/misc_64.c
+++ b/arch/sparc/prom/misc_64.c
@@ -150,20 +150,6 @@ void prom_halt_power_off(void)
 	prom_halt();
 }
 
-/* Set prom sync handler to call function 'funcp'. */
-void prom_setcallback(callback_func_t funcp)
-{
-	unsigned long args[5];
-	if (!funcp)
-		return;
-	args[0] = (unsigned long) "set-callback";
-	args[1] = 1;
-	args[2] = 1;
-	args[3] = (unsigned long) funcp;
-	args[4] = (unsigned long) -1;
-	p1275_cmd_direct(args);
-}
-
 /* Get the idprom and stuff it into buffer 'idbuf'.  Returns the
  * format type.  'num_bytes' is the number of bytes that your idbuf
  * has space for.  Returns 0xff on error.

From 91921fef7c658b12de53376b312d071d757f7770 Mon Sep 17 00:00:00 2001
From: "David S. Miller" <davem@davemloft.net>
Date: Wed, 17 Nov 2010 10:22:56 -0800
Subject: [PATCH 07/10] sparc: Do not export prom_nb{get,put}char().

Never used outside of console_{32,64}.c

Signed-off-by: David S. Miller <davem@davemloft.net>
---
 arch/sparc/include/asm/oplib_32.h | 6 ------
 arch/sparc/include/asm/oplib_64.h | 6 ------
 arch/sparc/prom/console_32.c      | 6 ++----
 arch/sparc/prom/console_64.c      | 6 ++----
 4 files changed, 4 insertions(+), 20 deletions(-)

diff --git a/arch/sparc/include/asm/oplib_32.h b/arch/sparc/include/asm/oplib_32.h
index 1d893fa6374c..49fe4266f86a 100644
--- a/arch/sparc/include/asm/oplib_32.h
+++ b/arch/sparc/include/asm/oplib_32.h
@@ -104,12 +104,6 @@ extern int prom_getprev(void);
 
 /* Character operations to/from the console.... */
 
-/* Non-blocking get character from console. */
-extern int prom_nbgetchar(void);
-
-/* Non-blocking put character to console. */
-extern int prom_nbputchar(char character);
-
 /* Blocking get character from console. */
 extern char prom_getchar(void);
 
diff --git a/arch/sparc/include/asm/oplib_64.h b/arch/sparc/include/asm/oplib_64.h
index 56985e300471..d541de4b6844 100644
--- a/arch/sparc/include/asm/oplib_64.h
+++ b/arch/sparc/include/asm/oplib_64.h
@@ -96,12 +96,6 @@ extern unsigned char prom_get_idprom(char *idp_buffer, int idpbuf_size);
 
 /* Character operations to/from the console.... */
 
-/* Non-blocking get character from console. */
-extern int prom_nbgetchar(void);
-
-/* Non-blocking put character to console. */
-extern int prom_nbputchar(char character);
-
 /* Blocking get character from console. */
 extern char prom_getchar(void);
 
diff --git a/arch/sparc/prom/console_32.c b/arch/sparc/prom/console_32.c
index 5340264b78f5..2ce5acb45f2d 100644
--- a/arch/sparc/prom/console_32.c
+++ b/arch/sparc/prom/console_32.c
@@ -19,8 +19,7 @@ extern void restore_current(void);
 /* Non blocking get character from console input device, returns -1
  * if no input was taken.  This can be used for polling.
  */
-int
-prom_nbgetchar(void)
+static int prom_nbgetchar(void)
 {
 	static char inc;
 	int i = -1;
@@ -51,8 +50,7 @@ prom_nbgetchar(void)
 /* Non blocking put character to console device, returns -1 if
  * unsuccessful.
  */
-int
-prom_nbputchar(char c)
+static int prom_nbputchar(char c)
 {
 	static char outc;
 	unsigned long flags;
diff --git a/arch/sparc/prom/console_64.c b/arch/sparc/prom/console_64.c
index de67fc73d91e..33a8b275d6af 100644
--- a/arch/sparc/prom/console_64.c
+++ b/arch/sparc/prom/console_64.c
@@ -18,8 +18,7 @@ extern int prom_stdin, prom_stdout;
 /* Non blocking get character from console input device, returns -1
  * if no input was taken.  This can be used for polling.
  */
-inline int
-prom_nbgetchar(void)
+static int prom_nbgetchar(void)
 {
 	unsigned long args[7];
 	char inc;
@@ -42,8 +41,7 @@ prom_nbgetchar(void)
 /* Non blocking put character to console device, returns -1 if
  * unsuccessful.
  */
-inline int
-prom_nbputchar(char c)
+static int prom_nbputchar(char c)
 {
 	unsigned long args[7];
 	char outc;

From e62cac1fd035b4cde707285008499dbe71955a86 Mon Sep 17 00:00:00 2001
From: "David S. Miller" <davem@davemloft.net>
Date: Tue, 30 Nov 2010 14:33:29 -0800
Subject: [PATCH 08/10] sparc: Pass buffer pointer all the way down to
 prom_{get,put}char().

This gets us closer to being able to eliminate the use
of dynamic and stack based buffers, so that we can adhere
to the "no buffer addresses above 4GB" rule for PROM calls.

Signed-off-by: David S. Miller <davem@davemloft.net>
---
 arch/sparc/include/asm/openprom.h |  2 +-
 arch/sparc/include/asm/oplib_32.h |  4 +--
 arch/sparc/include/asm/oplib_64.h |  4 +--
 arch/sparc/prom/console_32.c      | 50 +++++++++++++++----------------
 arch/sparc/prom/console_64.c      | 34 ++++++++++-----------
 arch/sparc/prom/printf.c          | 15 +++++-----
 6 files changed, 55 insertions(+), 54 deletions(-)

diff --git a/arch/sparc/include/asm/openprom.h b/arch/sparc/include/asm/openprom.h
index 81cd43432dc0..47eaafad15ce 100644
--- a/arch/sparc/include/asm/openprom.h
+++ b/arch/sparc/include/asm/openprom.h
@@ -39,7 +39,7 @@ struct linux_dev_v2_funcs {
 	int (*v2_dev_open)(char *devpath);
 	void (*v2_dev_close)(int d);
 	int (*v2_dev_read)(int d, char *buf, int nbytes);
-	int (*v2_dev_write)(int d, char *buf, int nbytes);
+	int (*v2_dev_write)(int d, const char *buf, int nbytes);
 	int (*v2_dev_seek)(int d, int hi, int lo);
 
 	/* Never issued (multistage load support) */
diff --git a/arch/sparc/include/asm/oplib_32.h b/arch/sparc/include/asm/oplib_32.h
index 49fe4266f86a..4c2539243e46 100644
--- a/arch/sparc/include/asm/oplib_32.h
+++ b/arch/sparc/include/asm/oplib_32.h
@@ -105,10 +105,10 @@ extern int prom_getprev(void);
 /* Character operations to/from the console.... */
 
 /* Blocking get character from console. */
-extern char prom_getchar(void);
+extern void prom_getchar(char *buf);
 
 /* Blocking put character to console. */
-extern void prom_putchar(char character);
+extern void prom_putchar(const char *buf);
 
 /* Prom's internal routines, don't use in kernel/boot code. */
 extern void prom_printf(const char *fmt, ...);
diff --git a/arch/sparc/include/asm/oplib_64.h b/arch/sparc/include/asm/oplib_64.h
index d541de4b6844..384e558a6a3c 100644
--- a/arch/sparc/include/asm/oplib_64.h
+++ b/arch/sparc/include/asm/oplib_64.h
@@ -97,10 +97,10 @@ extern unsigned char prom_get_idprom(char *idp_buffer, int idpbuf_size);
 /* Character operations to/from the console.... */
 
 /* Blocking get character from console. */
-extern char prom_getchar(void);
+extern void prom_getchar(char *buf);
 
 /* Blocking put character to console. */
-extern void prom_putchar(char character);
+extern void prom_putchar(const char *buf);
 
 /* Prom's internal routines, don't use in kernel/boot code. */
 extern void prom_printf(const char *fmt, ...);
diff --git a/arch/sparc/prom/console_32.c b/arch/sparc/prom/console_32.c
index 2ce5acb45f2d..69c16bbf1f48 100644
--- a/arch/sparc/prom/console_32.c
+++ b/arch/sparc/prom/console_32.c
@@ -19,27 +19,27 @@ extern void restore_current(void);
 /* Non blocking get character from console input device, returns -1
  * if no input was taken.  This can be used for polling.
  */
-static int prom_nbgetchar(void)
+static int prom_nbgetchar(char *buf)
 {
-	static char inc;
-	int i = -1;
 	unsigned long flags;
+	int i = -1;
 
 	spin_lock_irqsave(&prom_lock, flags);
 	switch(prom_vers) {
 	case PROM_V0:
 		i = (*(romvec->pv_nbgetchar))();
+		if (i != -1) {
+			*buf = i;
+			i = 0;
+		}
 		break;
 	case PROM_V2:
 	case PROM_V3:
-		if( (*(romvec->pv_v2devops).v2_dev_read)(*romvec->pv_v2bootargs.fd_stdin , &inc, 0x1) == 1) {
-			i = inc;
-		} else {
-			i = -1;
-		}
+		if ((*(romvec->pv_v2devops).v2_dev_read)(*romvec->pv_v2bootargs.fd_stdin,
+							 buf, 0x1) == 1)
+			i = 0;
 		break;
 	default:
-		i = -1;
 		break;
 	};
 	restore_current();
@@ -50,27 +50,23 @@ static int prom_nbgetchar(void)
 /* Non blocking put character to console device, returns -1 if
  * unsuccessful.
  */
-static int prom_nbputchar(char c)
+static int prom_nbputchar(const char *buf)
 {
-	static char outc;
 	unsigned long flags;
 	int i = -1;
 
 	spin_lock_irqsave(&prom_lock, flags);
 	switch(prom_vers) {
 	case PROM_V0:
-		i = (*(romvec->pv_nbputchar))(c);
+		i = (*(romvec->pv_nbputchar))(*buf);
 		break;
 	case PROM_V2:
 	case PROM_V3:
-		outc = c;
-		if( (*(romvec->pv_v2devops).v2_dev_write)(*romvec->pv_v2bootargs.fd_stdout, &outc, 0x1) == 1)
+		if ((*(romvec->pv_v2devops).v2_dev_write)(*romvec->pv_v2bootargs.fd_stdout,
+							  buf, 0x1) == 1)
 			i = 0;
-		else
-			i = -1;
 		break;
 	default:
-		i = -1;
 		break;
 	};
 	restore_current();
@@ -79,17 +75,21 @@ static int prom_nbputchar(char c)
 }
 
 /* Blocking version of get character routine above. */
-char
-prom_getchar(void)
+void prom_getchar(char *buf)
 {
-	int character;
-	while((character = prom_nbgetchar()) == -1) ;
-	return (char) character;
+	while (1) {
+		int err = prom_nbgetchar(buf);
+		if (!err)
+			break;
+	}
 }
 
 /* Blocking version of put character routine above. */
-void
-prom_putchar(char c)
+void prom_putchar(const char *buf)
 {
-	while(prom_nbputchar(c) == -1) ;
+	while (1) {
+		int err = prom_nbputchar(buf);
+		if (!err)
+			break;
+	}
 }
diff --git a/arch/sparc/prom/console_64.c b/arch/sparc/prom/console_64.c
index 33a8b275d6af..a9a575433ce9 100644
--- a/arch/sparc/prom/console_64.c
+++ b/arch/sparc/prom/console_64.c
@@ -18,41 +18,37 @@ extern int prom_stdin, prom_stdout;
 /* Non blocking get character from console input device, returns -1
  * if no input was taken.  This can be used for polling.
  */
-static int prom_nbgetchar(void)
+static int prom_nbgetchar(char *buf)
 {
 	unsigned long args[7];
-	char inc;
 
 	args[0] = (unsigned long) "read";
 	args[1] = 3;
 	args[2] = 1;
 	args[3] = (unsigned int) prom_stdin;
-	args[4] = (unsigned long) &inc;
+	args[4] = (unsigned long) buf;
 	args[5] = 1;
 	args[6] = (unsigned long) -1;
 
 	p1275_cmd_direct(args);
 
 	if (args[6] == 1)
-		return inc;
+		return 0;
 	return -1;
 }
 
 /* Non blocking put character to console device, returns -1 if
  * unsuccessful.
  */
-static int prom_nbputchar(char c)
+static int prom_nbputchar(const char *buf)
 {
 	unsigned long args[7];
-	char outc;
-	
-	outc = c;
 
 	args[0] = (unsigned long) "write";
 	args[1] = 3;
 	args[2] = 1;
 	args[3] = (unsigned int) prom_stdout;
-	args[4] = (unsigned long) &outc;
+	args[4] = (unsigned long) buf;
 	args[5] = 1;
 	args[6] = (unsigned long) -1;
 
@@ -65,17 +61,21 @@ static int prom_nbputchar(char c)
 }
 
 /* Blocking version of get character routine above. */
-char
-prom_getchar(void)
+void prom_getchar(char *buf)
 {
-	int character;
-	while((character = prom_nbgetchar()) == -1) ;
-	return (char) character;
+	while (1) {
+		int err = prom_nbgetchar(buf);
+		if (!err)
+			break;
+	}
 }
 
 /* Blocking version of put character routine above. */
-void
-prom_putchar(char c)
+void prom_putchar(const char *buf)
 {
-	prom_nbputchar(c);
+	while (1) {
+		int err = prom_nbputchar(buf);
+		if (!err)
+			break;
+	}
 }
diff --git a/arch/sparc/prom/printf.c b/arch/sparc/prom/printf.c
index ca869266b9f3..24031971f806 100644
--- a/arch/sparc/prom/printf.c
+++ b/arch/sparc/prom/printf.c
@@ -23,13 +23,14 @@ static char ppbuf[1024];
 
 void notrace prom_write(const char *buf, unsigned int n)
 {
-	char ch;
-
-	while (n != 0) {
-		--n;
-		if ((ch = *buf++) == '\n')
-			prom_putchar('\r');
-		prom_putchar(ch);
+	while (n-- != 0) {
+		char ch = *buf;
+		if (ch == '\n') {
+			char tmp = '\r';
+			prom_putchar(&tmp);
+		}
+		prom_putchar(buf);
+		buf++;
 	}
 }
 

From 12c7a35ee6a1c605e740733f2cbd5b5079f09f0f Mon Sep 17 00:00:00 2001
From: "David S. Miller" <davem@davemloft.net>
Date: Tue, 30 Nov 2010 14:53:05 -0800
Subject: [PATCH 09/10] sparc: Delete prom_*getchar().

Completely unused.

Signed-off-by: David S. Miller <davem@davemloft.net>
---
 arch/sparc/include/asm/oplib_32.h |  5 ----
 arch/sparc/include/asm/oplib_64.h |  5 ----
 arch/sparc/prom/console_32.c      | 41 -------------------------------
 arch/sparc/prom/console_64.c      | 32 ------------------------
 4 files changed, 83 deletions(-)

diff --git a/arch/sparc/include/asm/oplib_32.h b/arch/sparc/include/asm/oplib_32.h
index 4c2539243e46..40bc9efb1ac4 100644
--- a/arch/sparc/include/asm/oplib_32.h
+++ b/arch/sparc/include/asm/oplib_32.h
@@ -102,11 +102,6 @@ extern int prom_getrev(void);
 /* Get the prom firmware revision. */
 extern int prom_getprev(void);
 
-/* Character operations to/from the console.... */
-
-/* Blocking get character from console. */
-extern void prom_getchar(char *buf);
-
 /* Blocking put character to console. */
 extern void prom_putchar(const char *buf);
 
diff --git a/arch/sparc/include/asm/oplib_64.h b/arch/sparc/include/asm/oplib_64.h
index 384e558a6a3c..d4613738c537 100644
--- a/arch/sparc/include/asm/oplib_64.h
+++ b/arch/sparc/include/asm/oplib_64.h
@@ -94,11 +94,6 @@ extern void prom_halt_power_off(void) __attribute__ ((noreturn));
  */
 extern unsigned char prom_get_idprom(char *idp_buffer, int idpbuf_size);
 
-/* Character operations to/from the console.... */
-
-/* Blocking get character from console. */
-extern void prom_getchar(char *buf);
-
 /* Blocking put character to console. */
 extern void prom_putchar(const char *buf);
 
diff --git a/arch/sparc/prom/console_32.c b/arch/sparc/prom/console_32.c
index 69c16bbf1f48..157019e29fd4 100644
--- a/arch/sparc/prom/console_32.c
+++ b/arch/sparc/prom/console_32.c
@@ -16,37 +16,6 @@
 
 extern void restore_current(void);
 
-/* Non blocking get character from console input device, returns -1
- * if no input was taken.  This can be used for polling.
- */
-static int prom_nbgetchar(char *buf)
-{
-	unsigned long flags;
-	int i = -1;
-
-	spin_lock_irqsave(&prom_lock, flags);
-	switch(prom_vers) {
-	case PROM_V0:
-		i = (*(romvec->pv_nbgetchar))();
-		if (i != -1) {
-			*buf = i;
-			i = 0;
-		}
-		break;
-	case PROM_V2:
-	case PROM_V3:
-		if ((*(romvec->pv_v2devops).v2_dev_read)(*romvec->pv_v2bootargs.fd_stdin,
-							 buf, 0x1) == 1)
-			i = 0;
-		break;
-	default:
-		break;
-	};
-	restore_current();
-	spin_unlock_irqrestore(&prom_lock, flags);
-	return i; /* Ugh, we could spin forever on unsupported proms ;( */
-}
-
 /* Non blocking put character to console device, returns -1 if
  * unsuccessful.
  */
@@ -74,16 +43,6 @@ static int prom_nbputchar(const char *buf)
 	return i; /* Ugh, we could spin forever on unsupported proms ;( */
 }
 
-/* Blocking version of get character routine above. */
-void prom_getchar(char *buf)
-{
-	while (1) {
-		int err = prom_nbgetchar(buf);
-		if (!err)
-			break;
-	}
-}
-
 /* Blocking version of put character routine above. */
 void prom_putchar(const char *buf)
 {
diff --git a/arch/sparc/prom/console_64.c b/arch/sparc/prom/console_64.c
index a9a575433ce9..0da88d10beff 100644
--- a/arch/sparc/prom/console_64.c
+++ b/arch/sparc/prom/console_64.c
@@ -15,28 +15,6 @@
 
 extern int prom_stdin, prom_stdout;
 
-/* Non blocking get character from console input device, returns -1
- * if no input was taken.  This can be used for polling.
- */
-static int prom_nbgetchar(char *buf)
-{
-	unsigned long args[7];
-
-	args[0] = (unsigned long) "read";
-	args[1] = 3;
-	args[2] = 1;
-	args[3] = (unsigned int) prom_stdin;
-	args[4] = (unsigned long) buf;
-	args[5] = 1;
-	args[6] = (unsigned long) -1;
-
-	p1275_cmd_direct(args);
-
-	if (args[6] == 1)
-		return 0;
-	return -1;
-}
-
 /* Non blocking put character to console device, returns -1 if
  * unsuccessful.
  */
@@ -60,16 +38,6 @@ static int prom_nbputchar(const char *buf)
 		return -1;
 }
 
-/* Blocking version of get character routine above. */
-void prom_getchar(char *buf)
-{
-	while (1) {
-		int err = prom_nbgetchar(buf);
-		if (!err)
-			break;
-	}
-}
-
 /* Blocking version of put character routine above. */
 void prom_putchar(const char *buf)
 {

From 595a251c0740785fd3c0d2156d78578c7479811e Mon Sep 17 00:00:00 2001
From: "David S. Miller" <davem@davemloft.net>
Date: Tue, 30 Nov 2010 20:15:58 -0800
Subject: [PATCH 10/10] sparc: Write to prom console using indirect buffer.

sparc64 systems have a restriction in that passing in buffer
addressses above 4GB to prom calls is not reliable.

We end up violating this when we do prom console writes, because we
use an on-stack buffer to translate '\n' into '\r\n'.

So instead, do this translation into an intermediate buffer, which is
in the kernel image and thus below 4GB, then pass that to the PROM
console write calls.

On the 32-bit side we don't have to deal with any of these issues, so
the new prom_console_write_buf() uses the existing prom_nbputchar()
implementation.  However we can now mark those routines static.

Since the 64-bit side completely uses new code we can delete the
putchar bits as they are now completely unused.

Signed-off-by: David S. Miller <davem@davemloft.net>
---
 arch/sparc/include/asm/oplib_32.h |  4 ++--
 arch/sparc/include/asm/oplib_64.h |  4 ++--
 arch/sparc/prom/console_32.c      | 14 ++++++++------
 arch/sparc/prom/console_64.c      | 27 +++++++++++++-------------
 arch/sparc/prom/printf.c          | 32 ++++++++++++++++++++++++++-----
 5 files changed, 52 insertions(+), 29 deletions(-)

diff --git a/arch/sparc/include/asm/oplib_32.h b/arch/sparc/include/asm/oplib_32.h
index 40bc9efb1ac4..9e5c64084b86 100644
--- a/arch/sparc/include/asm/oplib_32.h
+++ b/arch/sparc/include/asm/oplib_32.h
@@ -102,8 +102,8 @@ extern int prom_getrev(void);
 /* Get the prom firmware revision. */
 extern int prom_getprev(void);
 
-/* Blocking put character to console. */
-extern void prom_putchar(const char *buf);
+/* Write a buffer of characters to the console. */
+extern void prom_console_write_buf(const char *buf, int len);
 
 /* Prom's internal routines, don't use in kernel/boot code. */
 extern void prom_printf(const char *fmt, ...);
diff --git a/arch/sparc/include/asm/oplib_64.h b/arch/sparc/include/asm/oplib_64.h
index d4613738c537..8cd0df34e82b 100644
--- a/arch/sparc/include/asm/oplib_64.h
+++ b/arch/sparc/include/asm/oplib_64.h
@@ -94,8 +94,8 @@ extern void prom_halt_power_off(void) __attribute__ ((noreturn));
  */
 extern unsigned char prom_get_idprom(char *idp_buffer, int idpbuf_size);
 
-/* Blocking put character to console. */
-extern void prom_putchar(const char *buf);
+/* Write a buffer of characters to the console. */
+extern void prom_console_write_buf(const char *buf, int len);
 
 /* Prom's internal routines, don't use in kernel/boot code. */
 extern void prom_printf(const char *fmt, ...);
diff --git a/arch/sparc/prom/console_32.c b/arch/sparc/prom/console_32.c
index 157019e29fd4..48863108a44c 100644
--- a/arch/sparc/prom/console_32.c
+++ b/arch/sparc/prom/console_32.c
@@ -43,12 +43,14 @@ static int prom_nbputchar(const char *buf)
 	return i; /* Ugh, we could spin forever on unsupported proms ;( */
 }
 
-/* Blocking version of put character routine above. */
-void prom_putchar(const char *buf)
+void prom_console_write_buf(const char *buf, int len)
 {
-	while (1) {
-		int err = prom_nbputchar(buf);
-		if (!err)
-			break;
+	while (len) {
+		int n = prom_nbputchar(buf);
+		if (n)
+			continue;
+		len--;
+		buf++;
 	}
 }
+
diff --git a/arch/sparc/prom/console_64.c b/arch/sparc/prom/console_64.c
index 0da88d10beff..ed39e75828bd 100644
--- a/arch/sparc/prom/console_64.c
+++ b/arch/sparc/prom/console_64.c
@@ -15,35 +15,34 @@
 
 extern int prom_stdin, prom_stdout;
 
-/* Non blocking put character to console device, returns -1 if
- * unsuccessful.
- */
-static int prom_nbputchar(const char *buf)
+static int __prom_console_write_buf(const char *buf, int len)
 {
 	unsigned long args[7];
+	int ret;
 
 	args[0] = (unsigned long) "write";
 	args[1] = 3;
 	args[2] = 1;
 	args[3] = (unsigned int) prom_stdout;
 	args[4] = (unsigned long) buf;
-	args[5] = 1;
+	args[5] = (unsigned int) len;
 	args[6] = (unsigned long) -1;
 
 	p1275_cmd_direct(args);
 
-	if (args[6] == 1)
-		return 0;
-	else
+	ret = (int) args[6];
+	if (ret < 0)
 		return -1;
+	return ret;
 }
 
-/* Blocking version of put character routine above. */
-void prom_putchar(const char *buf)
+void prom_console_write_buf(const char *buf, int len)
 {
-	while (1) {
-		int err = prom_nbputchar(buf);
-		if (!err)
-			break;
+	while (len) {
+		int n = __prom_console_write_buf(buf, len);
+		if (n < 0)
+			continue;
+		len -= n;
+		buf += len;
 	}
 }
diff --git a/arch/sparc/prom/printf.c b/arch/sparc/prom/printf.c
index 24031971f806..d9682f06b3b0 100644
--- a/arch/sparc/prom/printf.c
+++ b/arch/sparc/prom/printf.c
@@ -15,23 +15,45 @@
 
 #include <linux/kernel.h>
 #include <linux/compiler.h>
+#include <linux/spinlock.h>
 
 #include <asm/openprom.h>
 #include <asm/oplib.h>
 
+#define CONSOLE_WRITE_BUF_SIZE	1024
+
 static char ppbuf[1024];
+static char console_write_buf[CONSOLE_WRITE_BUF_SIZE];
+static DEFINE_RAW_SPINLOCK(console_write_lock);
 
 void notrace prom_write(const char *buf, unsigned int n)
 {
+	unsigned int dest_len;
+	unsigned long flags;
+	char *dest;
+
+	dest = console_write_buf;
+	raw_spin_lock_irqsave(&console_write_lock, flags);
+
+	dest_len = 0;
 	while (n-- != 0) {
-		char ch = *buf;
+		char ch = *buf++;
 		if (ch == '\n') {
-			char tmp = '\r';
-			prom_putchar(&tmp);
+			*dest++ = '\r';
+			dest_len++;
+		}
+		*dest++ = ch;
+		dest_len++;
+		if (dest_len >= CONSOLE_WRITE_BUF_SIZE - 1) {
+			prom_console_write_buf(console_write_buf, dest_len);
+			dest = console_write_buf;
+			dest_len = 0;
 		}
-		prom_putchar(buf);
-		buf++;
 	}
+	if (dest_len)
+		prom_console_write_buf(console_write_buf, dest_len);
+
+	raw_spin_unlock_irqrestore(&console_write_lock, flags);
 }
 
 void notrace prom_printf(const char *fmt, ...)