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-rw-r--r--arch/mn10300/unit-asb2303/include/unit/clock.h25
-rw-r--r--arch/mn10300/unit-asb2303/include/unit/serial.h5
-rw-r--r--arch/mn10300/unit-asb2303/include/unit/timex.h109
-rw-r--r--arch/mn10300/unit-asb2303/unit-init.c10
4 files changed, 78 insertions, 71 deletions
diff --git a/arch/mn10300/unit-asb2303/include/unit/clock.h b/arch/mn10300/unit-asb2303/include/unit/clock.h
index 2a0bf79ab968..0316907a012e 100644
--- a/arch/mn10300/unit-asb2303/include/unit/clock.h
+++ b/arch/mn10300/unit-asb2303/include/unit/clock.h
@@ -14,32 +14,11 @@
#ifndef __ASSEMBLY__
-#ifdef CONFIG_MN10300_RTC
-
-extern unsigned long mn10300_ioclk; /* IOCLK (crystal speed) in HZ */
-extern unsigned long mn10300_iobclk;
-extern unsigned long mn10300_tsc_per_HZ;
-
-#define MN10300_IOCLK mn10300_ioclk
-/* If this processors has a another clock, uncomment the below. */
-/* #define MN10300_IOBCLK mn10300_iobclk */
-
-#else /* !CONFIG_MN10300_RTC */
-
#define MN10300_IOCLK 33333333UL
/* #define MN10300_IOBCLK 66666666UL */
-#endif /* !CONFIG_MN10300_RTC */
-
-#define MN10300_JCCLK MN10300_IOCLK
-#define MN10300_TSCCLK MN10300_IOCLK
-
-#ifdef CONFIG_MN10300_RTC
-#define MN10300_TSC_PER_HZ mn10300_tsc_per_HZ
-#else /* !CONFIG_MN10300_RTC */
-#define MN10300_TSC_PER_HZ (MN10300_TSCCLK/HZ)
-#endif /* !CONFIG_MN10300_RTC */
-
#endif /* !__ASSEMBLY__ */
+#define MN10300_WDCLK MN10300_IOCLK
+
#endif /* _ASM_UNIT_CLOCK_H */
diff --git a/arch/mn10300/unit-asb2303/include/unit/serial.h b/arch/mn10300/unit-asb2303/include/unit/serial.h
index 047566cd2e36..991e356bac5f 100644
--- a/arch/mn10300/unit-asb2303/include/unit/serial.h
+++ b/arch/mn10300/unit-asb2303/include/unit/serial.h
@@ -22,6 +22,11 @@
#define SERIAL_IRQ XIRQ0 /* Dual serial (PC16552) (Hi) */
/*
+ * The ASB2303 has an 18.432 MHz clock the UART
+ */
+#define BASE_BAUD (18432000 / 16)
+
+/*
* dispose of the /dev/ttyS0 and /dev/ttyS1 serial ports
*/
#ifndef CONFIG_GDBSTUB_ON_TTYSx
diff --git a/arch/mn10300/unit-asb2303/include/unit/timex.h b/arch/mn10300/unit-asb2303/include/unit/timex.h
index f206b63c95b4..cc18fe7d8b90 100644
--- a/arch/mn10300/unit-asb2303/include/unit/timex.h
+++ b/arch/mn10300/unit-asb2303/include/unit/timex.h
@@ -1,6 +1,6 @@
-/* ASB2303-specific timer specifcations
+/* ASB2303-specific timer specifications
*
- * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
+ * Copyright (C) 2007, 2010 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
@@ -17,67 +17,72 @@
#include <asm/timer-regs.h>
#include <unit/clock.h>
+#include <asm/param.h>
/*
* jiffies counter specifications
*/
#define TMJCBR_MAX 0xffff
-#define TMJCBC TM01BC
-
-#define TMJCMD TM01MD
-#define TMJCBR TM01BR
#define TMJCIRQ TM1IRQ
#define TMJCICR TM1ICR
-#define TMJCICR_LEVEL GxICR_LEVEL_5
#ifndef __ASSEMBLY__
-static inline void startup_jiffies_counter(void)
+#define MN10300_SRC_IOCLK MN10300_IOCLK
+
+#ifndef HZ
+# error HZ undeclared.
+#endif /* !HZ */
+/* use as little prescaling as possible to avoid losing accuracy */
+#if (MN10300_SRC_IOCLK + HZ / 2) / HZ - 1 <= TMJCBR_MAX
+# define IOCLK_PRESCALE 1
+# define JC_TIMER_CLKSRC TM0MD_SRC_IOCLK
+# define TSC_TIMER_CLKSRC TM4MD_SRC_IOCLK
+#elif (MN10300_SRC_IOCLK / 8 + HZ / 2) / HZ - 1 <= TMJCBR_MAX
+# define IOCLK_PRESCALE 8
+# define JC_TIMER_CLKSRC TM0MD_SRC_IOCLK_8
+# define TSC_TIMER_CLKSRC TM4MD_SRC_IOCLK_8
+#elif (MN10300_SRC_IOCLK / 32 + HZ / 2) / HZ - 1 <= TMJCBR_MAX
+# define IOCLK_PRESCALE 32
+# define JC_TIMER_CLKSRC TM0MD_SRC_IOCLK_32
+# define TSC_TIMER_CLKSRC TM4MD_SRC_IOCLK_32
+#else
+# error You lose.
+#endif
+
+#define MN10300_JCCLK (MN10300_SRC_IOCLK / IOCLK_PRESCALE)
+#define MN10300_TSCCLK (MN10300_SRC_IOCLK / IOCLK_PRESCALE)
+
+#define MN10300_JC_PER_HZ ((MN10300_JCCLK + HZ / 2) / HZ)
+#define MN10300_TSC_PER_HZ ((MN10300_TSCCLK + HZ / 2) / HZ)
+
+static inline void stop_jiffies_counter(void)
{
- unsigned rate;
- u16 md, t16;
-
- /* use as little prescaling as possible to avoid losing accuracy */
- md = TM0MD_SRC_IOCLK;
- rate = MN10300_JCCLK / HZ;
-
- if (rate > TMJCBR_MAX) {
- md = TM0MD_SRC_IOCLK_8;
- rate = MN10300_JCCLK / 8 / HZ;
-
- if (rate > TMJCBR_MAX) {
- md = TM0MD_SRC_IOCLK_32;
- rate = MN10300_JCCLK / 32 / HZ;
-
- if (rate > TMJCBR_MAX)
- BUG();
- }
- }
+ u16 tmp;
+ TM01MD = JC_TIMER_CLKSRC | TM1MD_SRC_TM0CASCADE << 8;
+ tmp = TM01MD;
+}
- TMJCBR = rate - 1;
- t16 = TMJCBR;
+static inline void reload_jiffies_counter(u32 cnt)
+{
+ u32 tmp;
- TMJCMD =
- md |
- TM1MD_SRC_TM0CASCADE << 8 |
- TM0MD_INIT_COUNTER |
- TM1MD_INIT_COUNTER << 8;
+ TM01BR = cnt;
+ tmp = TM01BR;
- TMJCMD =
- md |
- TM1MD_SRC_TM0CASCADE << 8 |
- TM0MD_COUNT_ENABLE |
- TM1MD_COUNT_ENABLE << 8;
+ TM01MD = JC_TIMER_CLKSRC | \
+ TM1MD_SRC_TM0CASCADE << 8 | \
+ TM0MD_INIT_COUNTER | \
+ TM1MD_INIT_COUNTER << 8;
- t16 = TMJCMD;
- TMJCICR |= GxICR_ENABLE | GxICR_DETECT | GxICR_REQUEST;
- t16 = TMJCICR;
-}
+ TM01MD = JC_TIMER_CLKSRC | \
+ TM1MD_SRC_TM0CASCADE << 8 | \
+ TM0MD_COUNT_ENABLE | \
+ TM1MD_COUNT_ENABLE << 8;
-static inline void shutdown_jiffies_counter(void)
-{
+ tmp = TM01MD;
}
#endif /* !__ASSEMBLY__ */
@@ -94,29 +99,39 @@ static inline void shutdown_jiffies_counter(void)
static inline void startup_timestamp_counter(void)
{
+ u32 t32;
+
/* set up timer 4 & 5 cascaded as a 32-bit counter to count real time
* - count down from 4Gig-1 to 0 and wrap at IOCLK rate
*/
TM45BR = TMTSCBR_MAX;
+ t32 = TM45BR;
- TM4MD = TM4MD_SRC_IOCLK;
+ TM4MD = TSC_TIMER_CLKSRC;
TM4MD |= TM4MD_INIT_COUNTER;
TM4MD &= ~TM4MD_INIT_COUNTER;
TM4ICR = 0;
+ t32 = TM4ICR;
TM5MD = TM5MD_SRC_TM4CASCADE;
TM5MD |= TM5MD_INIT_COUNTER;
TM5MD &= ~TM5MD_INIT_COUNTER;
TM5ICR = 0;
+ t32 = TM5ICR;
TM5MD |= TM5MD_COUNT_ENABLE;
TM4MD |= TM4MD_COUNT_ENABLE;
+ t32 = TM5MD;
+ t32 = TM4MD;
}
static inline void shutdown_timestamp_counter(void)
{
+ u8 t8;
TM4MD = 0;
TM5MD = 0;
+ t8 = TM4MD;
+ t8 = TM5MD;
}
/*
@@ -127,7 +142,7 @@ typedef unsigned long cycles_t;
static inline cycles_t read_timestamp_counter(void)
{
- return (cycles_t)TMTSCBC;
+ return (cycles_t)~TMTSCBC;
}
#endif /* !__ASSEMBLY__ */
diff --git a/arch/mn10300/unit-asb2303/unit-init.c b/arch/mn10300/unit-asb2303/unit-init.c
index 70e8cb4ea266..834a76aa551a 100644
--- a/arch/mn10300/unit-asb2303/unit-init.c
+++ b/arch/mn10300/unit-asb2303/unit-init.c
@@ -31,6 +31,14 @@ asmlinkage void __init unit_init(void)
SET_XIRQ_TRIGGER(3, XIRQ_TRIGGER_HILEVEL);
SET_XIRQ_TRIGGER(4, XIRQ_TRIGGER_LOWLEVEL);
SET_XIRQ_TRIGGER(5, XIRQ_TRIGGER_LOWLEVEL);
+
+#ifdef CONFIG_EXT_SERIAL_IRQ_LEVEL
+ set_intr_level(XIRQ0, NUM2GxICR_LEVEL(CONFIG_EXT_SERIAL_IRQ_LEVEL));
+#endif
+
+#ifdef CONFIG_ETHERNET_IRQ_LEVEL
+ set_intr_level(XIRQ3, NUM2GxICR_LEVEL(CONFIG_ETHERNET_IRQ_LEVEL));
+#endif
}
/*
@@ -51,7 +59,7 @@ void __init unit_init_IRQ(void)
switch (GET_XIRQ_TRIGGER(extnum)) {
case XIRQ_TRIGGER_HILEVEL:
case XIRQ_TRIGGER_LOWLEVEL:
- set_intr_postackable(XIRQ2IRQ(extnum));
+ mn10300_set_lateack_irq_type(XIRQ2IRQ(extnum));
break;
default:
break;
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.