+// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2011
* Heiko Schocher, DENX Software Engineering, hs@denx.de.
*
- * SPDX-License-Identifier: GPL-2.0+
+ * A bootcount driver for the RTC IP block found on many TI platforms.
+ * This requires the RTC clocks, etc, to be enabled prior to use and
+ * not all boards with this IP block on it will have the RTC in use.
*/
#include <bootcount.h>
-#include <asm/arch/da850_lowlevel.h>
-#include <asm/arch/davinci_misc.h>
+#include <asm/davinci_rtc.h>
void bootcount_store(ulong a)
{
(struct davinci_rtc *)CONFIG_SYS_BOOTCOUNT_ADDR;
/*
- * write RTC kick register to enable write
- * for RTC Scratch registers. Scratch0 and 1 are
- * used for bootcount values.
+ * write RTC kick registers to enable write
+ * for RTC Scratch registers. Scratch register 2 is
+ * used for bootcount value.
*/
writel(RTC_KICK0R_WE, ®->kick0r);
writel(RTC_KICK1R_WE, ®->kick1r);
- raw_bootcount_store(®->scratch0, a);
- raw_bootcount_store(®->scratch1, BOOTCOUNT_MAGIC);
+ raw_bootcount_store(®->scratch2,
+ (BOOTCOUNT_MAGIC & 0xffff0000) | (a & 0x0000ffff));
}
ulong bootcount_load(void)
{
+ unsigned long val;
struct davinci_rtc *reg =
(struct davinci_rtc *)CONFIG_SYS_BOOTCOUNT_ADDR;
- if (raw_bootcount_load(®->scratch1) != BOOTCOUNT_MAGIC)
+ val = raw_bootcount_load(®->scratch2);
+ if ((val & 0xffff0000) != (BOOTCOUNT_MAGIC & 0xffff0000))
return 0;
else
- return raw_bootcount_load(®->scratch0);
+ return val & 0x0000ffff;
}