Revert merge of git://www.denx.de/git/u-boot-arm, commit 62479b18:
Reverting became necessary after it turned out that the patches in
the u-boot-arm repo were modified, and in some cases corrupted.
This reverts the following commits:
066bebd6353e33af3adefc3404560871699e9961
7a837b7310166ae8fc8b8d66d7ef01b60a80f9d6
c88ae20580b2b01487b4cdcc8b2a113f551aee36
a147e56f03871bba4f05058d5e04ce7deb010b04
d6674e0e2a6a1f033945f78838566210d3f28c95
8c8463cce44d849e37744749b32d38e1dfb12e50
c98b47ad24b2d91f41c09a3d62d7f70ad84f4b7d
8bf69d81782619187933a605f1a95ee1d069478d
8c16cb0d3b971f46fbe77c072664c0f2dcd4471d
a574a73852a527779234e73e17e7597fd8128882
1377b5583a48021d983e1fd565f7d40c89e84d63
1704dc20917b4f71e373e2c888497ee666d40380
Signed-off-by: Wolfgang Denk <wd@denx.de>
diff --git a/cpu/arm926ejs/davinci/timer.c b/cpu/arm926ejs/davinci/timer.c
index 4797797..8bb8b45 100644
--- a/cpu/arm926ejs/davinci/timer.c
+++ b/cpu/arm926ejs/davinci/timer.c
@@ -42,9 +42,9 @@
typedef volatile struct {
u_int32_t pid12;
- u_int32_t emumgt;
- u_int32_t na1;
- u_int32_t na2;
+ u_int32_t emumgt_clksped;
+ u_int32_t gpint_en;
+ u_int32_t gpdir_dat;
u_int32_t tim12;
u_int32_t tim34;
u_int32_t prd12;
@@ -52,12 +52,21 @@
u_int32_t tcr;
u_int32_t tgcr;
u_int32_t wdtcr;
+ u_int32_t tlgc;
+ u_int32_t tlmr;
} davinci_timer;
davinci_timer *timer = (davinci_timer *)CFG_TIMERBASE;
#define TIMER_LOAD_VAL (CFG_HZ_CLOCK / CFG_HZ)
-#define TIM_CLK_DIV 16
+#define READ_TIMER timer->tim34
+
+/*
+ * Timer runs with CFG_HZ_CLOCK, currently 27MHz. To avoid wrap
+ * around of timestamp already after min ~159s, divide it, e.g. by 16.
+ * timestamp will then wrap around all min ~42min
+ */
+#define DIV(x) ((x) >> 4)
static ulong timestamp;
static ulong lastinc;
@@ -67,50 +76,63 @@
/* We are using timer34 in unchained 32-bit mode, full speed */
timer->tcr = 0x0;
timer->tgcr = 0x0;
- timer->tgcr = 0x06 | ((TIM_CLK_DIV - 1) << 8);
+ timer->tgcr = 0x06;
timer->tim34 = 0x0;
timer->prd34 = TIMER_LOAD_VAL;
lastinc = 0;
+ timer->tcr = 0x80 << 16;
timestamp = 0;
- timer->tcr = 2 << 22;
return(0);
}
void reset_timer(void)
{
- timer->tcr = 0x0;
- timer->tim34 = 0;
- lastinc = 0;
+ reset_timer_masked();
+}
+
+ulong get_timer(ulong base)
+{
+ return(get_timer_masked() - base);
+}
+
+void set_timer(ulong t)
+{
+ timestamp = t;
+}
+
+void udelay(unsigned long usec)
+{
+ udelay_masked(usec);
+}
+
+void reset_timer_masked(void)
+{
+ lastinc = DIV(READ_TIMER);
timestamp = 0;
- timer->tcr = 2 << 22;
}
-static ulong get_timer_raw(void)
+ulong get_timer_raw(void)
{
- ulong now = timer->tim34;
+ ulong now = DIV(READ_TIMER);
if (now >= lastinc) {
/* normal mode */
timestamp += now - lastinc;
} else {
/* overflow ... */
- timestamp += now + TIMER_LOAD_VAL - lastinc;
+ timestamp += now + DIV(TIMER_LOAD_VAL) - lastinc;
}
lastinc = now;
return timestamp;
}
-ulong get_timer(ulong base)
-{
- return((get_timer_raw() / (TIMER_LOAD_VAL / TIM_CLK_DIV)) - base); }
-
-void set_timer(ulong t)
+ulong get_timer_masked(void)
{
- timestamp = t;
+ return(get_timer_raw() / DIV(TIMER_LOAD_VAL));
}
-void udelay(unsigned long usec)
+void udelay_masked(unsigned long usec)
{
ulong tmo;
ulong endtime;
@@ -118,7 +140,7 @@
tmo = CFG_HZ_CLOCK / 1000;
tmo *= usec;
- tmo /= (1000 * TIM_CLK_DIV);
+ tmo /= 1000;
endtime = get_timer_raw() + tmo;
@@ -143,5 +165,8 @@
*/
ulong get_tbclk(void)
{
- return CFG_HZ;
+ ulong tbclk;
+
+ tbclk = CFG_HZ;
+ return(tbclk);
}