Subversion Repositories HelenOS

Rev

Rev 1686 | Rev 1704 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
1 jermar 1
/*
319 jermar 2
 * Copyright (C) 2003-2004 Jakub Jermar
1 jermar 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
 *
9
 * - Redistributions of source code must retain the above copyright
10
 *   notice, this list of conditions and the following disclaimer.
11
 * - Redistributions in binary form must reproduce the above copyright
12
 *   notice, this list of conditions and the following disclaimer in the
13
 *   documentation and/or other materials provided with the distribution.
14
 * - The name of the author may not be used to endorse or promote products
15
 *   derived from this software without specific prior written permission.
16
 *
17
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27
 */
28
 
1702 cejka 29
 /** @addtogroup mips32
30
 * @ingroup others
31
 * @{
32
 */
33
/** @file
34
 */
575 palkovsky 35
 
1702 cejka 36
 
1 jermar 37
#include <arch.h>
1686 decky 38
#include <arch/boot.h>
1 jermar 39
#include <arch/cp0.h>
40
#include <arch/exception.h>
313 palkovsky 41
#include <arch/asm.h>
703 jermar 42
#include <mm/as.h>
575 palkovsky 43
 
313 palkovsky 44
#include <userspace.h>
324 palkovsky 45
#include <arch/console.h>
326 palkovsky 46
#include <memstr.h>
391 jermar 47
#include <proc/thread.h>
1078 jermar 48
#include <proc/uarg.h>
330 palkovsky 49
#include <print.h>
1112 palkovsky 50
#include <syscall/syscall.h>
1642 vana 51
#include <sysinfo/sysinfo.h>
330 palkovsky 52
 
575 palkovsky 53
#include <arch/interrupt.h>
54
#include <arch/drivers/arc.h>
55
#include <console/chardev.h>
614 palkovsky 56
#include <arch/debugger.h>
1396 palkovsky 57
#include <genarch/fb/fb.h>
1642 vana 58
#include <debug.h>
575 palkovsky 59
 
60
#include <arch/asm/regname.h>
61
 
326 palkovsky 62
/* Size of the code jumping to the exception handler code
63
 * - J+NOP
64
 */
65
#define EXCEPTION_JUMP_SIZE    8
66
 
67
#define TLB_EXC ((char *) 0x80000000)
68
#define NORM_EXC ((char *) 0x80000180)
69
#define CACHE_EXC ((char *) 0x80000100)
70
 
1686 decky 71
bootinfo_t bootinfo;
72
 
1222 decky 73
void arch_pre_main(void)
74
{
75
    /* Setup usermode */
1686 decky 76
    init.cnt = bootinfo.cnt;
77
 
78
    __u32 i;
79
 
80
    for (i = 0; i < bootinfo.cnt; i++) {
81
        init.tasks[i].addr = bootinfo.tasks[i].addr;
82
        init.tasks[i].size = bootinfo.tasks[i].size;
83
    }
1222 decky 84
}
85
 
26 jermar 86
void arch_pre_mm_init(void)
1 jermar 87
{
329 palkovsky 88
    /* It is not assumed by default */
413 jermar 89
    interrupts_disable();
575 palkovsky 90
 
91
    /* Initialize dispatch table */
590 palkovsky 92
    exception_init();
573 palkovsky 93
    arc_init();
332 palkovsky 94
 
326 palkovsky 95
    /* Copy the exception vectors to the right places */
96
    memcpy(TLB_EXC, (char *)tlb_refill_entry, EXCEPTION_JUMP_SIZE);
97
    memcpy(NORM_EXC, (char *)exception_entry, EXCEPTION_JUMP_SIZE);
98
    memcpy(CACHE_EXC, (char *)cache_error_entry, EXCEPTION_JUMP_SIZE);
99
 
1434 palkovsky 100
    interrupt_init();
1 jermar 101
    /*
102
     * Switch to BEV normal level so that exception vectors point to the kernel.
103
     * Clear the error level.
104
     */
105
    cp0_status_write(cp0_status_read() & ~(cp0_status_bev_bootstrap_bit|cp0_status_erl_error_bit));
125 jermar 106
 
329 palkovsky 107
    /*
108
     * Mask all interrupts
109
     */
110
    cp0_mask_all_int();
1434 palkovsky 111
 
1 jermar 112
    /*
113
     * Unmask hardware clock interrupt.
114
     */
509 jermar 115
    cp0_unmask_int(TIMER_IRQ);
125 jermar 116
 
324 palkovsky 117
    console_init();
614 palkovsky 118
    debugger_init();
1 jermar 119
}
23 jermar 120
 
121
void arch_post_mm_init(void)
122
{
1396 palkovsky 123
#ifdef CONFIG_FB
124
        fb_init(0x12000000, 640, 480, 24, 1920); // gxemul framebuffer
125
#endif
1642 vana 126
        sysinfo_set_item_val("machine." STRING(MACHINE),NULL,1);
23 jermar 127
}
32 jermar 128
 
503 jermar 129
void arch_pre_smp_init(void)
32 jermar 130
{
131
}
313 palkovsky 132
 
503 jermar 133
void arch_post_smp_init(void)
134
{
135
}
136
 
794 palkovsky 137
/* Stack pointer saved when entering user mode */
138
/* TODO: How do we do it on SMP system???? */
139
 
812 jermar 140
/* Why the linker moves the variable 64K away in assembler
794 palkovsky 141
 * when not in .text section ????????
142
 */
143
__address supervisor_sp __attribute__ ((section (".text")));
144
 
1078 jermar 145
void userspace(uspace_arg_t *kernel_uarg)
313 palkovsky 146
{
147
    /* EXL=1, UM=1, IE=1 */
148
    cp0_status_write(cp0_status_read() | (cp0_status_exl_exception_bit |
149
                          cp0_status_um_bit |
150
                          cp0_status_ie_enabled_bit));
1078 jermar 151
    cp0_epc_write((__address) kernel_uarg->uspace_entry);
1122 palkovsky 152
    userspace_asm(((__address) kernel_uarg->uspace_stack+PAGE_SIZE),
153
              (__address) kernel_uarg->uspace_uarg,
154
              (__address) kernel_uarg->uspace_entry);
313 palkovsky 155
    while (1)
156
        ;
157
}
158
 
1187 jermar 159
/** Perform mips32 specific tasks needed before the new task is run. */
160
void before_task_runs_arch(void)
161
{
162
}
163
 
164
/** Perform mips32 specific tasks needed before the new thread is scheduled. */
313 palkovsky 165
void before_thread_runs_arch(void)
166
{
167
    supervisor_sp = (__address) &THREAD->kstack[THREAD_STACK_SIZE-SP_DELTA];
168
}
897 jermar 169
 
170
void after_thread_ran_arch(void)
171
{
172
}
1112 palkovsky 173
 
1121 jermar 174
/** Set thread-local-storage pointer
1112 palkovsky 175
 *
176
 * We have it currently in K1, it is
177
 * possible to have it separately in the future.
178
 */
179
__native sys_tls_set(__native addr)
180
{
181
    return 0;
182
}
1474 palkovsky 183
 
1702 cejka 184
 
185
 /** @}
186
 */
187