[U-Boot] [PATCH v2] arm926ejs: timer: Replace bss variable by gdr

[Heiko Schocher]

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 at denx.de>
cc: Albert ARIBAUD <albert.aribaud at free.fr>
cc: Prafulla Wadaskar <prafulla at marvell.com>
cc: Stefano Babic <sbabic at denx.de>
cc: Reinhard Meyer <u-boot at emk-elektronik.de>
---
 - changes since v1:
   rebased and fixed an trivial merge issue in
   arch/arm/cpu/arm926ejs/davinci/timer.c

 arch/arm/cpu/arm926ejs/davinci/timer.c   |    4 ++++
 arch/arm/cpu/arm926ejs/kirkwood/timer.c  |    6 ++++--
 arch/arm/cpu/arm926ejs/mb86r0x/timer.c   |    6 ++++--
 arch/arm/cpu/arm926ejs/mx25/timer.c      |    6 ++++--
 arch/arm/cpu/arm926ejs/mx27/timer.c      |    6 ++++--
 arch/arm/cpu/arm926ejs/omap/timer.c      |    6 ++++--
 arch/arm/cpu/arm926ejs/orion5x/timer.c   |    6 ++++--
 arch/arm/cpu/arm926ejs/spear/timer.c     |    6 ++++--
 arch/arm/cpu/arm926ejs/versatile/timer.c |    6 ++++--
 9 files changed, 36 insertions(+), 16 deletions(-)

diff --git a/arch/arm/cpu/arm926ejs/davinci/timer.c b/arch/arm/cpu/arm926ejs/davinci/timer.c
index 1c6fa4a..9fff95e 100644
--- a/arch/arm/cpu/arm926ejs/davinci/timer.c
+++ b/arch/arm/cpu/arm926ejs/davinci/timer.c
@@ -62,6 +62,10 @@ static struct davinci_timer * const timer =
 #define TIMER_LOAD_VAL	0xffffffff
 
 #define TIM_CLK_DIV	16
+DECLARE_GLOBAL_DATA_PTR;
+
+#define timestamp gd->tbl
+#define lastinc gd->lastinc
 
 int timer_init(void)
 {
diff --git a/arch/arm/cpu/arm926ejs/kirkwood/timer.c b/arch/arm/cpu/arm926ejs/kirkwood/timer.c
index 2ec6a93..3e80329 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 9175b71..6966b0d 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 11d41a8..14f0c2d 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 8f1d47b..5c1cf01 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 7d4b6e6..88a0ee6 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 089ef47..bbab226 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 06858b4..66cf4de 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 81d6749..2e243b1 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)
-- 
1.7.3.4