Merge branch 'master' of git://git.denx.de/u-boot-mpc85xx

9 files changed, 83 insertions, 1 deletions

diff --git a/arch/powerpc/cpu/mpc85xx/cpu.c b/arch/powerpc/cpu/mpc85xx/cpu.c
index 684d400..6274f92 100644
--- a/arch/powerpc/cpu/mpc85xx/cpu.c
+++ b/arch/powerpc/cpu/mpc85xx/cpu.c
@@ -310,6 +310,14 @@ __weak unsigned long get_tbclk (void)
 
 
 #if defined(CONFIG_WATCHDOG)
+#define WATCHDOG_MASK (TCR_WP(63) | TCR_WRC(3) | TCR_WIE)
+void
+init_85xx_watchdog(void)
+{
+	mtspr(SPRN_TCR, (mfspr(SPRN_TCR) & ~WATCHDOG_MASK) |
+	      TCR_WP(CONFIG_WATCHDOG_PRESC) | TCR_WRC(CONFIG_WATCHDOG_RC));
+}
+
 void
 reset_85xx_watchdog(void)
 {
diff --git a/arch/powerpc/cpu/mpc85xx/interrupts.c b/arch/powerpc/cpu/mpc85xx/interrupts.c
index a36a4af..daf46a9 100644
--- a/arch/powerpc/cpu/mpc85xx/interrupts.c
+++ b/arch/powerpc/cpu/mpc85xx/interrupts.c
@@ -42,7 +42,7 @@ int interrupt_init_cpu(unsigned int *decrementer_count)
 	*decrementer_count = get_tbclk() / CONFIG_SYS_HZ;
 
 	/* PIE is same as DIE, dec interrupt enable */
-	mtspr(SPRN_TCR, TCR_PIE);
+	mtspr(SPRN_TCR, mfspr(SPRN_TCR) | TCR_PIE);
 
 #ifdef CONFIG_INTERRUPTS
 	pic->iivpr1 = 0x810001;	/* 50220 enable ecm interrupts */
diff --git a/arch/powerpc/include/asm/processor.h b/arch/powerpc/include/asm/processor.h
index 2445acd..1b98e0f 100644
--- a/arch/powerpc/include/asm/processor.h
+++ b/arch/powerpc/include/asm/processor.h
@@ -378,11 +378,16 @@
 #else
 #define SPRN_TCR	0x154	/* Book E Timer Control Register */
 #endif /* CONFIG_BOOKE */
+#ifdef CONFIG_E500MC
+#define  TCR_WP(x)		(((64-x)&0x3)<<30)| \
+				(((64-x)&0x3c)<<15) /* WDT Period 2^x clocks*/
+#else
 #define   TCR_WP(x)		(((x)&0x3)<<30)	/* WDT Period */
 #define     WP_2_17		0		/* 2^17 clocks */
 #define     WP_2_21		1		/* 2^21 clocks */
 #define     WP_2_25		2		/* 2^25 clocks */
 #define     WP_2_29		3		/* 2^29 clocks */
+#endif /* CONFIG_E500 */
 #define   TCR_WRC(x)		(((x)&0x3)<<28)	/* WDT Reset Control */
 #define     WRC_NONE		0		/* No reset will occur */
 #define     WRC_CORE		1		/* Core reset will occur */
diff --git a/arch/powerpc/lib/board.c b/arch/powerpc/lib/board.c
index 50eb820..0296205 100644
--- a/arch/powerpc/lib/board.c
+++ b/arch/powerpc/lib/board.c
@@ -226,6 +226,9 @@ static int init_func_spi(void)
 #if defined(CONFIG_WATCHDOG)
 int init_func_watchdog_init(void)
 {
+#if defined(CONFIG_MPC85xx)
+	init_85xx_watchdog();
+#endif
 	puts("       Watchdog enabled\n");
 	WATCHDOG_RESET();
 	return 0;
diff --git a/board/keymile/kmp204x/kmp204x.c b/board/keymile/kmp204x/kmp204x.c
index 6bc8eb8..cd08379 100644
--- a/board/keymile/kmp204x/kmp204x.c
+++ b/board/keymile/kmp204x/kmp204x.c
@@ -80,14 +80,29 @@ int get_scl(void)
 
 #define ZL30158_RST	8
 #define BFTIC4_RST	0
+#define RSTRQSR1_WDT_RR	0x00200000
+#define RSTRQSR1_SW_RR	0x00100000
 
 int board_early_init_f(void)
 {
 	ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
+	bool cpuwd_flag = false;
+
+	/* configure mode for uP reset request */
+	qrio_uprstreq(UPREQ_CORE_RST);
 
 	/* board only uses the DDR_MCK0, so disable the DDR_MCK1/2/3 */
 	setbits_be32(&gur->ddrclkdr, 0x001f000f);
 
+	/* set reset reason according CPU register */
+	if ((gur->rstrqsr1 & (RSTRQSR1_WDT_RR | RSTRQSR1_SW_RR)) ==
+	    RSTRQSR1_WDT_RR)
+		cpuwd_flag = true;
+
+	qrio_cpuwd_flag(cpuwd_flag);
+	/* clear CPU bits by writing 1 */
+	setbits_be32(&gur->rstrqsr1, RSTRQSR1_WDT_RR | RSTRQSR1_SW_RR);
+
 	/* set the BFTIC's prstcfg to reset at power-up and unit reset only */
 	qrio_prstcfg(BFTIC4_RST, PRSTCFG_POWUP_UNIT_RST);
 	/* and enable WD on it */
diff --git a/board/keymile/kmp204x/kmp204x.h b/board/keymile/kmp204x/kmp204x.h
index afede99..e90e8ab 100644
--- a/board/keymile/kmp204x/kmp204x.h
+++ b/board/keymile/kmp204x/kmp204x.h
@@ -24,5 +24,12 @@ void qrio_wdmask(u8 bit, bool wden);
 void qrio_prstcfg(u8 bit, u8 mode);
 void qrio_set_leds(void);
 void qrio_enable_app_buffer(void);
+void qrio_cpuwd_flag(bool flag);
+int qrio_reset_reason(void);
+
+#define UPREQ_UNIT_RST		0x0
+#define UPREQ_CORE_RST		0x1
+
+void qrio_uprstreq(u8 mode);
 
 void pci_of_setup(void *blob, bd_t *bd);
diff --git a/board/keymile/kmp204x/qrio.c b/board/keymile/kmp204x/qrio.c
index b6ba93a..edf3bf1 100644
--- a/board/keymile/kmp204x/qrio.c
+++ b/board/keymile/kmp204x/qrio.c
@@ -173,3 +173,35 @@ void qrio_enable_app_buffer(void)
 	ctrll |= (CTRLL_WRB_BUFENA);
 	out_8(qrio_base + CTRLL_OFF, ctrll);
 }
+
+#define REASON1_OFF	0x12
+#define REASON1_CPUWD	0x01
+
+void qrio_cpuwd_flag(bool flag)
+{
+	u8 reason1;
+	void __iomem *qrio_base = (void *)CONFIG_SYS_QRIO_BASE;
+	reason1 = in_8(qrio_base + REASON1_OFF);
+	if (flag)
+		reason1 |= REASON1_CPUWD;
+	else
+		reason1 &= ~REASON1_CPUWD;
+	out_8(qrio_base + REASON1_OFF, reason1);
+}
+
+#define RSTCFG_OFF	0x11
+
+void qrio_uprstreq(u8 mode)
+{
+	u32 rstcfg;
+	void __iomem *qrio_base = (void *)CONFIG_SYS_QRIO_BASE;
+
+	rstcfg = in_8(qrio_base + RSTCFG_OFF);
+
+	if (mode & UPREQ_CORE_RST)
+		rstcfg |= UPREQ_CORE_RST;
+	else
+		rstcfg &= ~UPREQ_CORE_RST;
+
+	out_8(qrio_base + RSTCFG_OFF, rstcfg);
+}
diff --git a/include/configs/km/kmp204x-common.h b/include/configs/km/kmp204x-common.h
index efd9635..a0f9d29 100644
--- a/include/configs/km/kmp204x-common.h
+++ b/include/configs/km/kmp204x-common.h
@@ -377,6 +377,14 @@ int get_scl(void);
 #define CONFIG_SYS_LOADS_BAUD_CHANGE	/* allow baudrate change */
 
 /*
+ * Hardware Watchdog
+ */
+#define CONFIG_WATCHDOG			/* enable CPU watchdog */
+#define CONFIG_WATCHDOG_PRESC 34	/* wdog prescaler 2^(64-34) (~10min) */
+#define CONFIG_WATCHDOG_RC WRC_CHIP	/* reset chip on watchdog event */
+
+
+/*
  * additionnal command line configuration.
  */
 #define CONFIG_CMD_PCI
diff --git a/include/watchdog.h b/include/watchdog.h
index aacacb9..bd0a8d6 100644
--- a/include/watchdog.h
+++ b/include/watchdog.h
@@ -95,4 +95,8 @@ int init_func_watchdog_reset(void);
 #if defined(CONFIG_HW_WATCHDOG) && !defined(__ASSEMBLY__)
 	void hw_watchdog_init(void);
 #endif
+
+#if defined(CONFIG_MPC85xx) && !defined(__ASSEMBLY__)
+	void init_85xx_watchdog(void);
+#endif
 #endif /* _WATCHDOG_H_ */