powerpc: Consolidate bootcount_{store|load} for PowerPC

This patch consolidates bootcount_{store|load} for PowerPC by
implementing a common version in arch/powerpc/lib/bootcount.c. This
code is now used by all PowerPC variants that currently have these
functions implemented.

The functions now use the proper IO-accessor functions to read/write the
values.

This code also supports two different bootcount versions:

a) Use 2 separate words (2 * 32bit) to store the bootcounter
b) Use only 1 word (2 * 16bit) to store the bootcounter

Version b) was already used by MPC5xxx.

Signed-off-by: Stefan Roese <sr@denx.de>
Acked-by: Detlev Zundel <dzu@denx.de>
Acked-by: Kim Phillips <kim.phillips@freescale.com>
          for 83xx parts
Cc: Michael Zaidman <michael.zaidman@gmail.com>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Kim Phillips <kim.phillips@freescale.com>
Cc: Anatolij Gustschin <agust@denx.de>

5 files changed, 0 insertions, 124 deletions

diff --git a/arch/powerpc/cpu/mpc5xxx/cpu.c b/arch/powerpc/cpu/mpc5xxx/cpu.c
index b20234d..44b8a7a 100644
--- a/arch/powerpc/cpu/mpc5xxx/cpu.c
+++ b/arch/powerpc/cpu/mpc5xxx/cpu.c
@@ -154,26 +154,6 @@ void ft_cpu_setup(void *blob, bd_t *bd)
 }
 #endif
 
-#ifdef CONFIG_BOOTCOUNT_LIMIT
-
-void bootcount_store (ulong a)
-{
-	volatile ulong *save_addr = (volatile ulong *) (MPC5XXX_CDM_BRDCRMB);
-
-	*save_addr = (BOOTCOUNT_MAGIC & 0xffff0000) | a;
-}
-
-ulong bootcount_load (void)
-{
-	volatile ulong *save_addr = (volatile ulong *) (MPC5XXX_CDM_BRDCRMB);
-
-	if ((*save_addr & 0xffff0000) != (BOOTCOUNT_MAGIC & 0xffff0000))
-		return 0;
-	else
-		return (*save_addr & 0x0000ffff);
-}
-#endif /* CONFIG_BOOTCOUNT_LIMIT */
-
 #ifdef CONFIG_MPC5xxx_FEC
 /* Default initializations for FEC controllers.  To override,
  * create a board-specific function called:
diff --git a/arch/powerpc/cpu/mpc8260/commproc.c b/arch/powerpc/cpu/mpc8260/commproc.c
index 111a67c..c522bc5 100644
--- a/arch/powerpc/cpu/mpc8260/commproc.c
+++ b/arch/powerpc/cpu/mpc8260/commproc.c
@@ -195,27 +195,3 @@ ulong post_word_load (void)
 }
 
 #endif	/* CONFIG_POST || CONFIG_LOGBUFFER*/
-
-#ifdef CONFIG_BOOTCOUNT_LIMIT
-
-void bootcount_store (ulong a)
-{
-	volatile ulong *save_addr =
-		(volatile ulong *)(CONFIG_SYS_IMMR + CPM_BOOTCOUNT_ADDR);
-
-	save_addr[0] = a;
-	save_addr[1] = BOOTCOUNT_MAGIC;
-}
-
-ulong bootcount_load (void)
-{
-	volatile ulong *save_addr =
-		(volatile ulong *)(CONFIG_SYS_IMMR + CPM_BOOTCOUNT_ADDR);
-
-	if (save_addr[1] != BOOTCOUNT_MAGIC)
-		return 0;
-	else
-		return save_addr[0];
-}
-
-#endif /* CONFIG_BOOTCOUNT_LIMIT */
diff --git a/arch/powerpc/cpu/mpc83xx/cpu.c b/arch/powerpc/cpu/mpc83xx/cpu.c
index 8b98a57..d3be909 100644
--- a/arch/powerpc/cpu/mpc83xx/cpu.c
+++ b/arch/powerpc/cpu/mpc83xx/cpu.c
@@ -304,33 +304,3 @@ int cpu_mmc_init(bd_t *bis)
 	return 0;
 #endif
 }
-
-#ifdef CONFIG_BOOTCOUNT_LIMIT
-
-#if !defined(CONFIG_MPC8360)
-#error "CONFIG_BOOTCOUNT_LIMIT only for MPC8360 implemented"
-#endif
-
-#if !defined(CONFIG_BOOTCOUNT_ADDR)
-#define CONFIG_BOOTCOUNT_ADDR	(0x110000 + QE_MURAM_SIZE - 2 * sizeof(unsigned long))
-#endif
-
-#include <asm/io.h>
-
-void bootcount_store (ulong a)
-{
-	void *reg = (void *)(CONFIG_SYS_IMMR + CONFIG_BOOTCOUNT_ADDR);
-	out_be32 (reg, a);
-	out_be32 (reg + 4, BOOTCOUNT_MAGIC);
-}
-
-ulong bootcount_load (void)
-{
-	void *reg = (void *)(CONFIG_SYS_IMMR + CONFIG_BOOTCOUNT_ADDR);
-
-	if (in_be32 (reg + 4) != BOOTCOUNT_MAGIC)
-		return 0;
-	else
-		return in_be32 (reg);
-}
-#endif /* CONFIG_BOOTCOUNT_LIMIT */
diff --git a/arch/powerpc/cpu/mpc8xx/commproc.c b/arch/powerpc/cpu/mpc8xx/commproc.c
index a87a0dc..2c85377 100644
--- a/arch/powerpc/cpu/mpc8xx/commproc.c
+++ b/arch/powerpc/cpu/mpc8xx/commproc.c
@@ -103,29 +103,3 @@ ulong post_word_load (void)
 }
 
 #endif	/* CONFIG_POST || CONFIG_LOGBUFFER*/
-
-#ifdef CONFIG_BOOTCOUNT_LIMIT
-
-void bootcount_store (ulong a)
-{
-	volatile ulong *save_addr =
-		(volatile ulong *)( ((immap_t *) CONFIG_SYS_IMMR)->im_cpm.cp_dpmem +
-		                    CPM_BOOTCOUNT_ADDR );
-
-	save_addr[0] = a;
-	save_addr[1] = BOOTCOUNT_MAGIC;
-}
-
-ulong bootcount_load (void)
-{
-	volatile ulong *save_addr =
-		(volatile ulong *)( ((immap_t *) CONFIG_SYS_IMMR)->im_cpm.cp_dpmem +
-		                    CPM_BOOTCOUNT_ADDR );
-
-	if (save_addr[1] != BOOTCOUNT_MAGIC)
-		return 0;
-	else
-		return save_addr[0];
-}
-
-#endif /* CONFIG_BOOTCOUNT_LIMIT */
diff --git a/arch/powerpc/cpu/ppc4xx/commproc.c b/arch/powerpc/cpu/ppc4xx/commproc.c
index a1696d3..6bf95e6 100644
--- a/arch/powerpc/cpu/ppc4xx/commproc.c
+++ b/arch/powerpc/cpu/ppc4xx/commproc.c
@@ -51,27 +51,3 @@ ulong post_word_load (void)
 }
 
 #endif	/* CONFIG_POST || CONFIG_LOGBUFFER*/
-
-#ifdef CONFIG_BOOTCOUNT_LIMIT
-
-void bootcount_store (ulong a)
-{
-	volatile ulong *save_addr =
-		(volatile ulong *)(CONFIG_SYS_OCM_DATA_ADDR + CONFIG_SYS_BOOTCOUNT_ADDR);
-
-	save_addr[0] = a;
-	save_addr[1] = BOOTCOUNT_MAGIC;
-}
-
-ulong bootcount_load (void)
-{
-	volatile ulong *save_addr =
-		(volatile ulong *)(CONFIG_SYS_OCM_DATA_ADDR + CONFIG_SYS_BOOTCOUNT_ADDR);
-
-	if (save_addr[1] != BOOTCOUNT_MAGIC)
-		return 0;
-	else
-		return save_addr[0];
-}
-
-#endif /* CONFIG_BOOTCOUNT_LIMIT */