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-rw-r--r--arch/mn10300/unit-asb2305/include/unit/clock.h45
-rw-r--r--arch/mn10300/unit-asb2305/include/unit/leds.h51
-rw-r--r--arch/mn10300/unit-asb2305/include/unit/serial.h120
-rw-r--r--arch/mn10300/unit-asb2305/include/unit/timex.h135
-rw-r--r--arch/mn10300/unit-asb2305/leds.c2
-rw-r--r--arch/mn10300/unit-asb2305/unit-init.c2
6 files changed, 353 insertions, 2 deletions
diff --git a/arch/mn10300/unit-asb2305/include/unit/clock.h b/arch/mn10300/unit-asb2305/include/unit/clock.h
new file mode 100644
index 000000000000..7d514841ffda
--- /dev/null
+++ b/arch/mn10300/unit-asb2305/include/unit/clock.h
@@ -0,0 +1,45 @@
1/* ASB2305-specific clocks
2 *
3 * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
4 * Written by David Howells (dhowells@redhat.com)
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public Licence
8 * as published by the Free Software Foundation; either version
9 * 2 of the Licence, or (at your option) any later version.
10 */
11
12#ifndef _ASM_UNIT_CLOCK_H
13#define _ASM_UNIT_CLOCK_H
14
15#ifndef __ASSEMBLY__
16
17#ifdef CONFIG_MN10300_RTC
18
19extern unsigned long mn10300_ioclk; /* IOCLK (crystal speed) in HZ */
20extern unsigned long mn10300_iobclk;
21extern unsigned long mn10300_tsc_per_HZ;
22
23#define MN10300_IOCLK ((unsigned long)mn10300_ioclk)
24/* If this processors has a another clock, uncomment the below. */
25/* #define MN10300_IOBCLK ((unsigned long)mn10300_iobclk) */
26
27#else /* !CONFIG_MN10300_RTC */
28
29#define MN10300_IOCLK 33333333UL
30/* #define MN10300_IOBCLK 66666666UL */
31
32#endif /* !CONFIG_MN10300_RTC */
33
34#define MN10300_JCCLK MN10300_IOCLK
35#define MN10300_TSCCLK MN10300_IOCLK
36
37#ifdef CONFIG_MN10300_RTC
38#define MN10300_TSC_PER_HZ ((unsigned long)mn10300_tsc_per_HZ)
39#else /* !CONFIG_MN10300_RTC */
40#define MN10300_TSC_PER_HZ (MN10300_TSCCLK/HZ)
41#endif /* !CONFIG_MN10300_RTC */
42
43#endif /* !__ASSEMBLY__ */
44
45#endif /* _ASM_UNIT_CLOCK_H */
diff --git a/arch/mn10300/unit-asb2305/include/unit/leds.h b/arch/mn10300/unit-asb2305/include/unit/leds.h
new file mode 100644
index 000000000000..bc471f617fd1
--- /dev/null
+++ b/arch/mn10300/unit-asb2305/include/unit/leds.h
@@ -0,0 +1,51 @@
1/* ASB2305-specific LEDs
2 *
3 * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
4 * Written by David Howells (dhowells@redhat.com)
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public Licence
8 * as published by the Free Software Foundation; either version
9 * 2 of the Licence, or (at your option) any later version.
10 */
11
12#ifndef _ASM_UNIT_LEDS_H
13#define _ASM_UNIT_LEDS_H
14
15#include <asm/pio-regs.h>
16#include <asm/cpu-regs.h>
17#include <asm/exceptions.h>
18
19#define ASB2305_7SEGLEDS __SYSREG(0xA6F90000, u32)
20
21/* perform a hard reset by driving PIO06 low */
22#define mn10300_unit_hard_reset() \
23do { \
24 P0OUT &= 0xbf; \
25 P0MD = (P0MD & P0MD_6) | P0MD_6_OUT; \
26} while (0)
27
28/*
29 * use the 7-segment LEDs to indicate states
30 */
31/* indicate double-fault by displaying "db-f" on the LEDs */
32#define mn10300_set_dbfleds \
33 mov 0x43077f1d,d0 ; \
34 mov d0,(ASB2305_7SEGLEDS)
35
36/* flip the 7-segment LEDs between "Gdb-" and "----" */
37#define mn10300_set_gdbleds(ONOFF) \
38do { \
39 ASB2305_7SEGLEDS = (ONOFF) ? 0x8543077f : 0x7f7f7f7f; \
40} while (0)
41
42#ifndef __ASSEMBLY__
43extern void peripheral_leds_display_exception(enum exception_code);
44extern void peripheral_leds_led_chase(void);
45extern void peripheral_leds7x4_display_dec(unsigned int, unsigned int);
46extern void peripheral_leds7x4_display_hex(unsigned int, unsigned int);
47extern void peripheral_leds7x4_display_minssecs(unsigned int, unsigned int);
48extern void peripheral_leds7x4_display_rtc(void);
49#endif /* __ASSEMBLY__ */
50
51#endif /* _ASM_UNIT_LEDS_H */
diff --git a/arch/mn10300/unit-asb2305/include/unit/serial.h b/arch/mn10300/unit-asb2305/include/unit/serial.h
new file mode 100644
index 000000000000..3bfc90938787
--- /dev/null
+++ b/arch/mn10300/unit-asb2305/include/unit/serial.h
@@ -0,0 +1,120 @@
1/* ASB2305-specific 8250 serial ports
2 *
3 * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
4 * Written by David Howells (dhowells@redhat.com)
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public Licence
8 * as published by the Free Software Foundation; either version
9 * 2 of the Licence, or (at your option) any later version.
10 */
11#ifndef _ASM_UNIT_SERIAL_H
12#define _ASM_UNIT_SERIAL_H
13
14#include <asm/cpu/cpu-regs.h>
15#include <proc/irq.h>
16#include <linux/serial_reg.h>
17
18#define SERIAL_PORT0_BASE_ADDRESS 0xA6FB0000
19#define ASB2305_DEBUG_MCR __SYSREG(0xA6FB0000 + UART_MCR * 2, u8)
20
21#define SERIAL_IRQ XIRQ0 /* Dual serial (PC16552) (Hi) */
22
23/*
24 * dispose of the /dev/ttyS0 serial port
25 */
26#ifndef CONFIG_GDBSTUB_ON_TTYSx
27
28#define SERIAL_PORT_DFNS \
29 { \
30 .baud_base = BASE_BAUD, \
31 .irq = SERIAL_IRQ, \
32 .flags = STD_COM_FLAGS, \
33 .iomem_base = (u8 *) SERIAL_PORT0_BASE_ADDRESS, \
34 .iomem_reg_shift = 2, \
35 .io_type = SERIAL_IO_MEM, \
36 },
37
38#ifndef __ASSEMBLY__
39
40static inline void __debug_to_serial(const char *p, int n)
41{
42}
43
44#endif /* !__ASSEMBLY__ */
45
46#else /* CONFIG_GDBSTUB_ON_TTYSx */
47
48#define SERIAL_PORT_DFNS /* stolen by gdb-stub */
49
50#if defined(CONFIG_GDBSTUB_ON_TTYS0)
51#define GDBPORT_SERIAL_RX __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_RX * 4, u8)
52#define GDBPORT_SERIAL_TX __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_TX * 4, u8)
53#define GDBPORT_SERIAL_DLL __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_DLL * 4, u8)
54#define GDBPORT_SERIAL_DLM __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_DLM * 4, u8)
55#define GDBPORT_SERIAL_IER __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_IER * 4, u8)
56#define GDBPORT_SERIAL_IIR __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_IIR * 4, u8)
57#define GDBPORT_SERIAL_FCR __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_FCR * 4, u8)
58#define GDBPORT_SERIAL_LCR __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_LCR * 4, u8)
59#define GDBPORT_SERIAL_MCR __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_MCR * 4, u8)
60#define GDBPORT_SERIAL_LSR __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_LSR * 4, u8)
61#define GDBPORT_SERIAL_MSR __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_MSR * 4, u8)
62#define GDBPORT_SERIAL_SCR __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_SCR * 4, u8)
63#define GDBPORT_SERIAL_IRQ SERIAL_IRQ
64
65#elif defined(CONFIG_GDBSTUB_ON_TTYS1)
66#error The ASB2305 doesnt have a /dev/ttyS1
67#endif
68
69#ifndef __ASSEMBLY__
70
71#define TTYS0_TX __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_TX * 4, u8)
72#define TTYS0_MCR __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_MCR * 4, u8)
73#define TTYS0_LSR __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_LSR * 4, u8)
74#define TTYS0_MSR __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_MSR * 4, u8)
75
76#define LSR_WAIT_FOR(STATE) \
77do { \
78 while (!(TTYS0_LSR & UART_LSR_##STATE)) {} \
79} while (0)
80#define FLOWCTL_WAIT_FOR(LINE) \
81do { \
82 while (!(TTYS0_MSR & UART_MSR_##LINE)) {} \
83} while (0)
84#define FLOWCTL_CLEAR(LINE) \
85do { \
86 TTYS0_MCR &= ~UART_MCR_##LINE; \
87} while (0)
88#define FLOWCTL_SET(LINE) \
89do { \
90 TTYS0_MCR |= UART_MCR_##LINE; \
91} while (0)
92#define FLOWCTL_QUERY(LINE) ({ TTYS0_MSR & UART_MSR_##LINE; })
93
94static inline void __debug_to_serial(const char *p, int n)
95{
96 char ch;
97
98 FLOWCTL_SET(DTR);
99
100 for (; n > 0; n--) {
101 LSR_WAIT_FOR(THRE);
102 FLOWCTL_WAIT_FOR(CTS);
103
104 ch = *p++;
105 if (ch == 0x0a) {
106 TTYS0_TX = 0x0d;
107 LSR_WAIT_FOR(THRE);
108 FLOWCTL_WAIT_FOR(CTS);
109 }
110 TTYS0_TX = ch;
111 }
112
113 FLOWCTL_CLEAR(DTR);
114}
115
116#endif /* !__ASSEMBLY__ */
117
118#endif /* CONFIG_GDBSTUB_ON_TTYSx */
119
120#endif /* _ASM_UNIT_SERIAL_H */
diff --git a/arch/mn10300/unit-asb2305/include/unit/timex.h b/arch/mn10300/unit-asb2305/include/unit/timex.h
new file mode 100644
index 000000000000..a71c49aa85eb
--- /dev/null
+++ b/arch/mn10300/unit-asb2305/include/unit/timex.h
@@ -0,0 +1,135 @@
1/* ASB2305 timer specifcations
2 *
3 * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
4 * Written by David Howells (dhowells@redhat.com)
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public Licence
8 * as published by the Free Software Foundation; either version
9 * 2 of the Licence, or (at your option) any later version.
10 */
11#ifndef _ASM_UNIT_TIMEX_H
12#define _ASM_UNIT_TIMEX_H
13
14#ifndef __ASSEMBLY__
15#include <linux/irq.h>
16#endif /* __ASSEMBLY__ */
17
18#include <asm/cpu/timer-regs.h>
19#include <unit/clock.h>
20
21/*
22 * jiffies counter specifications
23 */
24
25#define TMJCBR_MAX 0xffff
26#define TMJCBC TM01BC
27
28#define TMJCMD TM01MD
29#define TMJCBR TM01BR
30#define TMJCIRQ TM1IRQ
31#define TMJCICR TM1ICR
32#define TMJCICR_LEVEL GxICR_LEVEL_5
33
34#ifndef __ASSEMBLY__
35
36static inline void startup_jiffies_counter(void)
37{
38 unsigned rate;
39 u16 md, t16;
40
41 /* use as little prescaling as possible to avoid losing accuracy */
42 md = TM0MD_SRC_IOCLK;
43 rate = MN10300_JCCLK / HZ;
44
45 if (rate > TMJCBR_MAX) {
46 md = TM0MD_SRC_IOCLK_8;
47 rate = MN10300_JCCLK / 8 / HZ;
48
49 if (rate > TMJCBR_MAX) {
50 md = TM0MD_SRC_IOCLK_32;
51 rate = MN10300_JCCLK / 32 / HZ;
52
53 if (rate > TMJCBR_MAX)
54 BUG();
55 }
56 }
57
58 TMJCBR = rate - 1;
59 t16 = TMJCBR;
60
61 TMJCMD =
62 md |
63 TM1MD_SRC_TM0CASCADE << 8 |
64 TM0MD_INIT_COUNTER |
65 TM1MD_INIT_COUNTER << 8;
66
67 TMJCMD =
68 md |
69 TM1MD_SRC_TM0CASCADE << 8 |
70 TM0MD_COUNT_ENABLE |
71 TM1MD_COUNT_ENABLE << 8;
72
73 t16 = TMJCMD;
74
75 TMJCICR |= GxICR_ENABLE | GxICR_DETECT | GxICR_REQUEST;
76 t16 = TMJCICR;
77}
78
79static inline void shutdown_jiffies_counter(void)
80{
81}
82
83#endif /* !__ASSEMBLY__ */
84
85
86/*
87 * timestamp counter specifications
88 */
89
90#define TMTSCBR_MAX 0xffffffff
91#define TMTSCBC TM45BC
92
93#ifndef __ASSEMBLY__
94
95static inline void startup_timestamp_counter(void)
96{
97 /* set up timer 4 & 5 cascaded as a 32-bit counter to count real time
98 * - count down from 4Gig-1 to 0 and wrap at IOCLK rate
99 */
100 TM45BR = TMTSCBR_MAX;
101
102 TM4MD = TM4MD_SRC_IOCLK;
103 TM4MD |= TM4MD_INIT_COUNTER;
104 TM4MD &= ~TM4MD_INIT_COUNTER;
105 TM4ICR = 0;
106
107 TM5MD = TM5MD_SRC_TM4CASCADE;
108 TM5MD |= TM5MD_INIT_COUNTER;
109 TM5MD &= ~TM5MD_INIT_COUNTER;
110 TM5ICR = 0;
111
112 TM5MD |= TM5MD_COUNT_ENABLE;
113 TM4MD |= TM4MD_COUNT_ENABLE;
114}
115
116static inline void shutdown_timestamp_counter(void)
117{
118 TM4MD = 0;
119 TM5MD = 0;
120}
121
122/*
123 * we use a cascaded pair of 16-bit down-counting timers to count I/O
124 * clock cycles for the purposes of time keeping
125 */
126typedef unsigned long cycles_t;
127
128static inline cycles_t read_timestamp_counter(void)
129{
130 return (cycles_t) TMTSCBC;
131}
132
133#endif /* !__ASSEMBLY__ */
134
135#endif /* _ASM_UNIT_TIMEX_H */
diff --git a/arch/mn10300/unit-asb2305/leds.c b/arch/mn10300/unit-asb2305/leds.c
index e99dcc9cee1a..d345ff9042d5 100644
--- a/arch/mn10300/unit-asb2305/leds.c
+++ b/arch/mn10300/unit-asb2305/leds.c
@@ -15,7 +15,7 @@
15#include <asm/processor.h> 15#include <asm/processor.h>
16#include <asm/cpu/intctl-regs.h> 16#include <asm/cpu/intctl-regs.h>
17#include <asm/cpu/rtc-regs.h> 17#include <asm/cpu/rtc-regs.h>
18#include <asm/unit/leds.h> 18#include <unit/leds.h>
19 19
20static const u8 asb2305_led_hex_tbl[16] = { 20static const u8 asb2305_led_hex_tbl[16] = {
21 0x80, 0xf2, 0x48, 0x60, 0x32, 0x24, 0x04, 0xf0, 21 0x80, 0xf2, 0x48, 0x60, 0x32, 0x24, 0x04, 0xf0,
diff --git a/arch/mn10300/unit-asb2305/unit-init.c b/arch/mn10300/unit-asb2305/unit-init.c
index 72812a9439ac..1c452cc3f6e9 100644
--- a/arch/mn10300/unit-asb2305/unit-init.c
+++ b/arch/mn10300/unit-asb2305/unit-init.c
@@ -18,7 +18,7 @@
18#include <asm/cpu/intctl-regs.h> 18#include <asm/cpu/intctl-regs.h>
19#include <asm/cpu/rtc-regs.h> 19#include <asm/cpu/rtc-regs.h>
20#include <asm/cpu/serial-regs.h> 20#include <asm/cpu/serial-regs.h>
21#include <asm/unit/serial.h> 21#include <unit/serial.h>
22 22
23/* 23/*
24 * initialise some of the unit hardware before gdbstub is set up 24 * initialise some of the unit hardware before gdbstub is set up
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-03 09:13:47 -0500