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-rw-r--r--arch/v850/kernel/anna.c202
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diff --git a/arch/v850/kernel/anna.c b/arch/v850/kernel/anna.c
deleted file mode 100644
index 5978a25170fb..000000000000
--- a/arch/v850/kernel/anna.c
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1/*
2 * arch/v850/kernel/anna.c -- Anna V850E2 evaluation chip/board
3 *
4 * Copyright (C) 2002,03 NEC Electronics Corporation
5 * Copyright (C) 2002,03 Miles Bader <miles@gnu.org>
6 *
7 * This file is subject to the terms and conditions of the GNU General
8 * Public License. See the file COPYING in the main directory of this
9 * archive for more details.
10 *
11 * Written by Miles Bader <miles@gnu.org>
12 */
13
14#include <linux/kernel.h>
15#include <linux/module.h>
16#include <linux/init.h>
17#include <linux/bootmem.h>
18#include <linux/major.h>
19#include <linux/irq.h>
20
21#include <asm/machdep.h>
22#include <asm/atomic.h>
23#include <asm/page.h>
24#include <asm/v850e_timer_d.h>
25#include <asm/v850e_uart.h>
26
27#include "mach.h"
28
29
30/* SRAM and SDRAM are vaguely contiguous (with a big hole in between; see
31 mach_reserve_bootmem for details); use both as one big area. */
32#define RAM_START SRAM_ADDR
33#define RAM_END (SDRAM_ADDR + SDRAM_SIZE)
34
35/* The bits of this port are connected to an 8-LED bar-graph. */
36#define LEDS_PORT 0
37
38
39static void anna_led_tick (void);
40
41
42void __init mach_early_init (void)
43{
44 ANNA_ILBEN = 0;
45
46 V850E2_CSC(0) = 0x402F;
47 V850E2_CSC(1) = 0x4000;
48 V850E2_BPC = 0;
49 V850E2_BSC = 0xAAAA;
50 V850E2_BEC = 0;
51
52#if 0
53 V850E2_BHC = 0xFFFF; /* icache all memory, dcache all */
54#else
55 V850E2_BHC = 0; /* cache no memory */
56#endif
57 V850E2_BCT(0) = 0xB088;
58 V850E2_BCT(1) = 0x0008;
59 V850E2_DWC(0) = 0x0027;
60 V850E2_DWC(1) = 0;
61 V850E2_BCC = 0x0006;
62 V850E2_ASC = 0;
63 V850E2_LBS = 0x0089;
64 V850E2_SCR(3) = 0x21A9;
65 V850E2_RFS(3) = 0x8121;
66
67 v850e_intc_disable_irqs ();
68}
69
70void __init mach_setup (char **cmdline)
71{
72 ANNA_PORT_PM (LEDS_PORT) = 0; /* Make all LED pins output pins. */
73 mach_tick = anna_led_tick;
74}
75
76void __init mach_get_physical_ram (unsigned long *ram_start,
77 unsigned long *ram_len)
78{
79 *ram_start = RAM_START;
80 *ram_len = RAM_END - RAM_START;
81}
82
83void __init mach_reserve_bootmem ()
84{
85 /* The space between SRAM and SDRAM is filled with duplicate
86 images of SRAM. Prevent the kernel from using them. */
87 reserve_bootmem (SRAM_ADDR + SRAM_SIZE,
88 SDRAM_ADDR - (SRAM_ADDR + SRAM_SIZE),
89 BOOTMEM_DEFAULT);
90}
91
92void mach_gettimeofday (struct timespec *tv)
93{
94 tv->tv_sec = 0;
95 tv->tv_nsec = 0;
96}
97
98void __init mach_sched_init (struct irqaction *timer_action)
99{
100 /* Start hardware timer. */
101 v850e_timer_d_configure (0, HZ);
102 /* Install timer interrupt handler. */
103 setup_irq (IRQ_INTCMD(0), timer_action);
104}
105
106static struct v850e_intc_irq_init irq_inits[] = {
107 { "IRQ", 0, NUM_MACH_IRQS, 1, 7 },
108 { "PIN", IRQ_INTP(0), IRQ_INTP_NUM, 1, 4 },
109 { "CCC", IRQ_INTCCC(0), IRQ_INTCCC_NUM, 1, 5 },
110 { "CMD", IRQ_INTCMD(0), IRQ_INTCMD_NUM, 1, 5 },
111 { "DMA", IRQ_INTDMA(0), IRQ_INTDMA_NUM, 1, 2 },
112 { "DMXER", IRQ_INTDMXER,1, 1, 2 },
113 { "SRE", IRQ_INTSRE(0), IRQ_INTSRE_NUM, 3, 3 },
114 { "SR", IRQ_INTSR(0), IRQ_INTSR_NUM, 3, 4 },
115 { "ST", IRQ_INTST(0), IRQ_INTST_NUM, 3, 5 },
116 { 0 }
117};
118#define NUM_IRQ_INITS (ARRAY_SIZE(irq_inits) - 1)
119
120static struct hw_interrupt_type hw_itypes[NUM_IRQ_INITS];
121
122void __init mach_init_irqs (void)
123{
124 v850e_intc_init_irq_types (irq_inits, hw_itypes);
125}
126
127void machine_restart (char *__unused)
128{
129#ifdef CONFIG_RESET_GUARD
130 disable_reset_guard ();
131#endif
132 asm ("jmp r0"); /* Jump to the reset vector. */
133}
134
135void machine_halt (void)
136{
137#ifdef CONFIG_RESET_GUARD
138 disable_reset_guard ();
139#endif
140 local_irq_disable (); /* Ignore all interrupts. */
141 ANNA_PORT_IO(LEDS_PORT) = 0xAA; /* Note that we halted. */
142 for (;;)
143 asm ("halt; nop; nop; nop; nop; nop");
144}
145
146void machine_power_off (void)
147{
148 machine_halt ();
149}
150
151/* Called before configuring an on-chip UART. */
152void anna_uart_pre_configure (unsigned chan, unsigned cflags, unsigned baud)
153{
154 /* The Anna connects some general-purpose I/O pins on the CPU to
155 the RTS/CTS lines of UART 1's serial connection. I/O pins P07
156 and P37 are RTS and CTS respectively. */
157 if (chan == 1) {
158 ANNA_PORT_PM(0) &= ~0x80; /* P07 in output mode */
159 ANNA_PORT_PM(3) |= 0x80; /* P37 in input mode */
160 }
161}
162
163/* Minimum and maximum bounds for the moving upper LED boundary in the
164 clock tick display. We can't use the last bit because it's used for
165 UART0's CTS output. */
166#define MIN_MAX_POS 0
167#define MAX_MAX_POS 6
168
169/* There are MAX_MAX_POS^2 - MIN_MAX_POS^2 cycles in the animation, so if
170 we pick 6 and 0 as above, we get 49 cycles, which is when divided into
171 the standard 100 value for HZ, gives us an almost 1s total time. */
172#define TICKS_PER_FRAME \
173 (HZ / (MAX_MAX_POS * MAX_MAX_POS - MIN_MAX_POS * MIN_MAX_POS))
174
175static void anna_led_tick ()
176{
177 static unsigned counter = 0;
178
179 if (++counter == TICKS_PER_FRAME) {
180 static int pos = 0, max_pos = MAX_MAX_POS, dir = 1;
181
182 if (dir > 0 && pos == max_pos) {
183 dir = -1;
184 if (max_pos == MIN_MAX_POS)
185 max_pos = MAX_MAX_POS;
186 else
187 max_pos--;
188 } else {
189 if (dir < 0 && pos == 0)
190 dir = 1;
191
192 if (pos + dir <= max_pos) {
193 /* Each bit of port 0 has a LED. */
194 clear_bit (pos, &ANNA_PORT_IO(LEDS_PORT));
195 pos += dir;
196 set_bit (pos, &ANNA_PORT_IO(LEDS_PORT));
197 }
198 }
199
200 counter = 0;
201 }
202}
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