arm926ejs: timer: Replace bss variable by gdr

Reuse the gd->tbl value for timestamp and add gd->lastinc for lastinc bss
values in the arm926ejs timers implementation.

The usage of bss values in drivers before initialisation of bss is forbidden.
In that special case some data in .rel.dyn gets corrupted.

This patch is similiar to the patch Dirk Behme posted
for the armv7/omap-common/timer.c and added suggestions
from Reinhard Meyer.

Tested on the arm926ejs mx27 based magnesium board
Tested on the arm926ejs kirkwood based suen3 board

Signed-off-by: Heiko Schocher <hs@denx.de>
cc: Albert ARIBAUD <albert.aribaud@free.fr>
cc: Prafulla Wadaskar <prafulla@marvell.com>
cc: Stefano Babic <sbabic@denx.de>
cc: Reinhard Meyer <u-boot@emk-elektronik.de>

8 files changed, 32 insertions, 16 deletions

diff --git a/arch/arm/cpu/arm926ejs/kirkwood/timer.c b/arch/arm/cpu/arm926ejs/kirkwood/timer.c
index 2ec6a93807..3e80329608 100644
--- a/arch/arm/cpu/arm926ejs/kirkwood/timer.c
+++ b/arch/arm/cpu/arm926ejs/kirkwood/timer.c
@@ -83,8 +83,10 @@ struct kwtmr_registers *kwtmr_regs = (struct kwtmr_registers *)KW_TIMER_BASE;
 #define READ_TIMER			(readl(CNTMR_VAL_REG(UBOOT_CNTR)) /	\
 					 (CONFIG_SYS_TCLK / 1000))
 
-static ulong timestamp;
-static ulong lastdec;
+DECLARE_GLOBAL_DATA_PTR;
+
+#define timestamp gd->tbl
+#define lastdec gd->lastinc
 
 void reset_timer_masked(void)
 {
diff --git a/arch/arm/cpu/arm926ejs/mb86r0x/timer.c b/arch/arm/cpu/arm926ejs/mb86r0x/timer.c
index 9175b71d16..6966b0d190 100644
--- a/arch/arm/cpu/arm926ejs/mb86r0x/timer.c
+++ b/arch/arm/cpu/arm926ejs/mb86r0x/timer.c
@@ -33,8 +33,10 @@
 #define TIMER_LOAD_VAL	0xffffffff
 #define TIMER_FREQ	(CONFIG_MB86R0x_IOCLK  / 256)
 
-static unsigned long long timestamp;
-static ulong lastdec;
+DECLARE_GLOBAL_DATA_PTR;
+
+#define timestamp gd->tbl
+#define lastdec gd->lastinc
 
 static inline unsigned long long tick_to_time(unsigned long long tick)
 {
diff --git a/arch/arm/cpu/arm926ejs/mx25/timer.c b/arch/arm/cpu/arm926ejs/mx25/timer.c
index 11d41a8bf9..14f0c2dc73 100644
--- a/arch/arm/cpu/arm926ejs/mx25/timer.c
+++ b/arch/arm/cpu/arm926ejs/mx25/timer.c
@@ -41,8 +41,10 @@
 #include <asm/io.h>
 #include <asm/arch/imx-regs.h>
 
-static ulong timestamp;
-static ulong lastinc;
+DECLARE_GLOBAL_DATA_PTR;
+
+#define timestamp gd->tbl
+#define lastinc gd->lastinc
 
 /*
  * "time" is measured in 1 / CONFIG_SYS_HZ seconds,
diff --git a/arch/arm/cpu/arm926ejs/mx27/timer.c b/arch/arm/cpu/arm926ejs/mx27/timer.c
index 8f1d47bba7..5c1cf014f0 100644
--- a/arch/arm/cpu/arm926ejs/mx27/timer.c
+++ b/arch/arm/cpu/arm926ejs/mx27/timer.c
@@ -43,8 +43,10 @@
 #define GPTCR_CLKSOURCE_32	(4 << 1)	/* Clock source		*/
 #define GPTCR_TEN		1		/* Timer enable		*/
 
-static ulong timestamp;
-static ulong lastinc;
+DECLARE_GLOBAL_DATA_PTR;
+
+#define timestamp gd->tbl
+#define lastinc gd->lastinc
 
 /*
  * "time" is measured in 1 / CONFIG_SYS_HZ seconds,
diff --git a/arch/arm/cpu/arm926ejs/omap/timer.c b/arch/arm/cpu/arm926ejs/omap/timer.c
index 7d4b6e602e..88a0ee677e 100644
--- a/arch/arm/cpu/arm926ejs/omap/timer.c
+++ b/arch/arm/cpu/arm926ejs/omap/timer.c
@@ -42,8 +42,10 @@
 /* macro to read the 32 bit timer */
 #define READ_TIMER (*(volatile ulong *)(CONFIG_SYS_TIMERBASE+8))
 
-static ulong timestamp;
-static ulong lastdec;
+DECLARE_GLOBAL_DATA_PTR;
+
+#define timestamp gd->tbl
+#define lastdec gd->lastinc
 
 int timer_init (void)
 {
diff --git a/arch/arm/cpu/arm926ejs/orion5x/timer.c b/arch/arm/cpu/arm926ejs/orion5x/timer.c
index 089ef47b37..bbab2269dd 100644
--- a/arch/arm/cpu/arm926ejs/orion5x/timer.c
+++ b/arch/arm/cpu/arm926ejs/orion5x/timer.c
@@ -90,8 +90,10 @@ static inline ulong read_timer(void)
 	      / (CONFIG_SYS_TCLK / 1000);
 }
 
-static ulong timestamp;
-static ulong lastdec;
+DECLARE_GLOBAL_DATA_PTR;
+
+#define timestamp gd->tbl
+#define lastdec gd->lastinc
 
 void reset_timer_masked(void)
 {
diff --git a/arch/arm/cpu/arm926ejs/spear/timer.c b/arch/arm/cpu/arm926ejs/spear/timer.c
index 06858b4a13..66cf4de817 100644
--- a/arch/arm/cpu/arm926ejs/spear/timer.c
+++ b/arch/arm/cpu/arm926ejs/spear/timer.c
@@ -36,8 +36,10 @@ static struct gpt_regs *const gpt_regs_p =
 static struct misc_regs *const misc_regs_p =
     (struct misc_regs *)CONFIG_SPEAR_MISCBASE;
 
-static ulong timestamp;
-static ulong lastdec;
+DECLARE_GLOBAL_DATA_PTR;
+
+#define timestamp gd->tbl
+#define lastdec gd->lastinc
 
 int timer_init(void)
 {
diff --git a/arch/arm/cpu/arm926ejs/versatile/timer.c b/arch/arm/cpu/arm926ejs/versatile/timer.c
index 81d67490db..2e243b196e 100644
--- a/arch/arm/cpu/arm926ejs/versatile/timer.c
+++ b/arch/arm/cpu/arm926ejs/versatile/timer.c
@@ -42,8 +42,10 @@
 /* macro to read the 32 bit timer */
 #define READ_TIMER (*(volatile ulong *)(CONFIG_SYS_TIMERBASE+4))
 
-static ulong timestamp;
-static ulong lastdec;
+DECLARE_GLOBAL_DATA_PTR;
+
+#define timestamp gd->tbl
+#define lastdec gd->lastinc
 
 #define TIMER_ENABLE	(1 << 7)
 #define TIMER_MODE_MSK	(1 << 6)