Subversion Repositories HelenOS

Rev

Rev 2927 | Rev 3674 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
1 jermar 1
/*
2071 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
 
1812 decky 29
/** @addtogroup mips32
1702 cejka 30
 * @{
31
 */
32
/** @file
33
 */
575 palkovsky 34
 
1 jermar 35
#include <arch.h>
1686 decky 36
#include <arch/boot.h>
1 jermar 37
#include <arch/cp0.h>
38
#include <arch/exception.h>
703 jermar 39
#include <mm/as.h>
575 palkovsky 40
 
313 palkovsky 41
#include <userspace.h>
324 palkovsky 42
#include <arch/console.h>
326 palkovsky 43
#include <memstr.h>
391 jermar 44
#include <proc/thread.h>
1078 jermar 45
#include <proc/uarg.h>
330 palkovsky 46
#include <print.h>
1112 palkovsky 47
#include <syscall/syscall.h>
1642 vana 48
#include <sysinfo/sysinfo.h>
330 palkovsky 49
 
575 palkovsky 50
#include <arch/interrupt.h>
51
#include <arch/drivers/arc.h>
52
#include <console/chardev.h>
3153 svoboda 53
#include <arch/barrier.h>
614 palkovsky 54
#include <arch/debugger.h>
1396 palkovsky 55
#include <genarch/fb/fb.h>
1993 decky 56
#include <genarch/fb/visuals.h>
1812 decky 57
#include <macros.h>
1936 decky 58
#include <ddi/device.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
 
1742 palkovsky 72
/* Why the linker moves the variable 64K away in assembler
73
 * when not in .text section ????????
74
 */
1780 jermar 75
uintptr_t supervisor_sp __attribute__ ((section (".text")));
1742 palkovsky 76
/* Stack pointer saved when entering user mode */
77
/* TODO: How do we do it on SMP system???? */
78
bootinfo_t bootinfo __attribute__ ((section (".text")));
79
 
1222 decky 80
void arch_pre_main(void)
81
{
82
    /* Setup usermode */
1686 decky 83
    init.cnt = bootinfo.cnt;
84
 
1780 jermar 85
    uint32_t i;
1686 decky 86
 
87
    for (i = 0; i < bootinfo.cnt; i++) {
88
        init.tasks[i].addr = bootinfo.tasks[i].addr;
89
        init.tasks[i].size = bootinfo.tasks[i].size;
90
    }
1222 decky 91
}
92
 
26 jermar 93
void arch_pre_mm_init(void)
1 jermar 94
{
329 palkovsky 95
    /* It is not assumed by default */
413 jermar 96
    interrupts_disable();
575 palkovsky 97
 
98
    /* Initialize dispatch table */
590 palkovsky 99
    exception_init();
573 palkovsky 100
    arc_init();
332 palkovsky 101
 
326 palkovsky 102
    /* Copy the exception vectors to the right places */
1936 decky 103
    memcpy(TLB_EXC, (char *) tlb_refill_entry, EXCEPTION_JUMP_SIZE);
3153 svoboda 104
    smc_coherence_block(TLB_EXC, EXCEPTION_JUMP_SIZE);
1936 decky 105
    memcpy(NORM_EXC, (char *) exception_entry, EXCEPTION_JUMP_SIZE);
3153 svoboda 106
    smc_coherence_block(NORM_EXC, EXCEPTION_JUMP_SIZE);
1936 decky 107
    memcpy(CACHE_EXC, (char *) cache_error_entry, EXCEPTION_JUMP_SIZE);
3153 svoboda 108
    smc_coherence_block(CACHE_EXC, EXCEPTION_JUMP_SIZE);
1936 decky 109
 
1 jermar 110
    /*
3153 svoboda 111
     * Switch to BEV normal level so that exception vectors point to the
112
     * kernel. Clear the error level.
1 jermar 113
     */
3153 svoboda 114
    cp0_status_write(cp0_status_read() &
115
        ~(cp0_status_bev_bootstrap_bit | cp0_status_erl_error_bit));
125 jermar 116
 
329 palkovsky 117
    /*
118
     * Mask all interrupts
119
     */
120
    cp0_mask_all_int();
1936 decky 121
 
614 palkovsky 122
    debugger_init();
1 jermar 123
}
23 jermar 124
 
125
void arch_post_mm_init(void)
126
{
1936 decky 127
    interrupt_init();
128
    console_init(device_assign_devno());
1396 palkovsky 129
#ifdef CONFIG_FB
3153 svoboda 130
    /* GXemul framebuffer */
131
    fb_init(0x12000000, 640, 480, 1920, VISUAL_RGB_8_8_8);
1396 palkovsky 132
#endif
1936 decky 133
    sysinfo_set_item_val("machine." STRING(MACHINE), NULL, 1);
23 jermar 134
}
32 jermar 135
 
1901 jermar 136
void arch_post_cpu_init(void)
137
{
138
}
139
 
503 jermar 140
void arch_pre_smp_init(void)
32 jermar 141
{
142
}
313 palkovsky 143
 
503 jermar 144
void arch_post_smp_init(void)
145
{
146
}
147
 
1078 jermar 148
void userspace(uspace_arg_t *kernel_uarg)
313 palkovsky 149
{
2722 decky 150
    /* EXL = 1, UM = 1, IE = 1 */
313 palkovsky 151
    cp0_status_write(cp0_status_read() | (cp0_status_exl_exception_bit |
3153 svoboda 152
        cp0_status_um_bit | cp0_status_ie_enabled_bit));
1780 jermar 153
    cp0_epc_write((uintptr_t) kernel_uarg->uspace_entry);
2722 decky 154
    userspace_asm(((uintptr_t) kernel_uarg->uspace_stack + PAGE_SIZE),
3153 svoboda 155
        (uintptr_t) kernel_uarg->uspace_uarg,
156
        (uintptr_t) kernel_uarg->uspace_entry);
2722 decky 157
 
3153 svoboda 158
    while (1)
159
        ;
313 palkovsky 160
}
161
 
1187 jermar 162
/** Perform mips32 specific tasks needed before the new task is run. */
163
void before_task_runs_arch(void)
164
{
165
}
166
 
167
/** Perform mips32 specific tasks needed before the new thread is scheduled. */
313 palkovsky 168
void before_thread_runs_arch(void)
169
{
3153 svoboda 170
    supervisor_sp = (uintptr_t) &THREAD->kstack[THREAD_STACK_SIZE -
171
        SP_DELTA];
313 palkovsky 172
}
897 jermar 173
 
174
void after_thread_ran_arch(void)
175
{
176
}
1112 palkovsky 177
 
1121 jermar 178
/** Set thread-local-storage pointer
1112 palkovsky 179
 *
180
 * We have it currently in K1, it is
181
 * possible to have it separately in the future.
182
 */
1780 jermar 183
unative_t sys_tls_set(unative_t addr)
1112 palkovsky 184
{
185
    return 0;
186
}
1474 palkovsky 187
 
2227 decky 188
void arch_reboot(void)
189
{
2722 decky 190
    if (!arc_reboot())
191
        ___halt();
192
 
3153 svoboda 193
    while (1)
194
        ;
2227 decky 195
}
196
 
1812 decky 197
/** @}
1702 cejka 198
 */