Annotation of prex-old/sys/arch/arm/cats/platform.h, Revision 1.2
1.1 nbrk 1: /*
2: * Copyright (c) 2007, Kohsuke Ohtani
3: * All rights reserved.
4: *
5: * Redistribution and use in source and binary forms, with or without
6: * modification, are permitted provided that the following conditions
7: * are met:
8: * 1. Redistributions of source code must retain the above copyright
9: * notice, this list of conditions and the following disclaimer.
10: * 2. Redistributions in binary form must reproduce the above copyright
11: * notice, this list of conditions and the following disclaimer in the
12: * documentation and/or other materials provided with the distribution.
13: * 3. Neither the name of the author nor the names of any co-contributors
14: * may be used to endorse or promote products derived from this software
15: * without specific prior written permission.
16: *
17: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20: * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27: * SUCH DAMAGE.
28: */
29:
1.2 ! nbrk 30: #ifndef _CATS_PLATFORM_H
! 31: #define _CATS_PLATFORM_H
1.1 nbrk 32:
33: /*
34: * Memory location
35: */
36:
37: #define PAGE_OFFSET 0x00000000
38:
1.2 ! nbrk 39: #define KERNEL_BASE 0x00200000
! 40: #define KERNEL_MAX 0x00400000 /* 2M */
! 41: #define USER_BASE 0x00400004 /* 2M + 4 */
! 42: #define USER_MAX 0x02000000 /* 32M */
! 43:
! 44: #define BOOT_INFO 0x03f00000 /* 63M */
! 45: #define BOOT_STACK 0x03f00800 /* 63M + BOOT_INFO_SIZE */
! 46: #define INT_STACK 0x03f02800 /* BOOT_STACK + 8K */
! 47: #define SYS_STACK 0x03f04800 /* INT_STACK + 8K */
1.1 nbrk 48:
49: #ifndef __ASSEMBLY__
50:
51: /*
52: * Page mapping
53: */
54: #define phys_to_virt(p_addr) (void *)((u_long)(p_addr) + PAGE_OFFSET)
55: #define virt_to_phys(v_addr) (void *)((u_long)(v_addr) - PAGE_OFFSET)
56:
57: /*
58: * Kernel/User Locations
59: */
60: #define kern_area(addr) \
61: (((u_long)(addr) >= KERNEL_BASE) && ((u_long)(addr) < KERNEL_MAX))
62: #define user_area(addr) \
63: (((u_long)(addr) >= USER_BASE) && ((u_long)(addr) < USER_MAX))
64:
65: /*
66: * Interrupt
67: */
68: #define NIRQS 14 /* number of interrupt vectors */
69:
70: static __inline void
71: interrupt_enable(void)
72: {
73: #ifndef __lint__
74: u_long val;
75:
76: __asm__ __volatile__(
77: "mrs %0, cpsr\n\t"
78: "bic %0, %0, #0xc0\n\t" /* Enable IRQ & FIQ */
79: "msr cpsr_c, %0\n\t"
80: :"=&r" (val)
81: :
82: : "memory");
83: #endif
84: }
85:
86: static __inline void
87: interrupt_disable(void)
88: {
89: #ifndef __lint__
90: u_long val;
91:
92: __asm__ __volatile__(
93: "mrs %0, cpsr\n\t"
94: "orr %0, %0, #0xc0\n\t" /* Disable IRQ & FIQ */
95: "msr cpsr_c, %0\n\t"
96: :"=&r" (val)
97: :
98: : "memory");
99: #endif
100: }
101:
102: static __inline void
103: interrupt_save(int *sts)
104: {
105: u_long val;
106:
107: __asm__ __volatile__(
108: "mrs %0, cpsr\n\t"
109: :"=&r" (val)
110: :
111: :"memory");
112: *sts = (int)val;
113: }
114:
115: static __inline void
116: interrupt_restore(int sts)
117: {
118:
119: __asm__ __volatile__(
120: "msr cpsr_c, %0\n\t"
121: :
122: :"r" (sts)
123: :"memory");
124: }
125:
126: extern void interrupt_mask(int);
127: extern void interrupt_unmask(int, int);
128: extern void interrupt_setup(int, int);
129: extern void interrupt_init(void);
130:
131: /* Interrupt mode for interrupt_setup() */
132: #define IMODE_EDGE 0 /* edge trigger */
133: #define IMODE_LEVEL 1 /* level trigger */
134:
135: extern void clock_init(void);
136:
137: extern void diag_init(void);
138:
139: #ifdef CONFIG_DIAG_VBA
140: static __inline void
141: diag_print(char *buf)
142: {
143:
144: __asm__ __volatile__(
145: "mov r0, %0\n\t"
146: "swi 0xff0000\n\t" /* VBA emulator call */
147: :
148: :"r" (buf)
149: :"r0");
150: }
151:
152: #else
153: extern void diag_print(char *);
154: #endif
155:
156: static __inline void
157: machine_idle(void)
158: {
159:
160: __asm__ __volatile__(
161: "swi 0x20000\n\t" /* GBA BIOS call */
162: :::"r0", "r1", "r2", "r3");
163: }
164:
165: static __inline void
166: machine_reset(void)
167: {
168:
169: __asm__ __volatile__(
170: "swi 0\n\t" /* GBA BIOS call */
171: :::"r0", "r1", "r2", "r3");
172: }
173:
174: extern void machine_init(void);
175:
176: #endif /* !__ASSEMBLY__ */
1.2 ! nbrk 177: #endif /* !_CATS_PLATFORM_H */
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