Subversion Repositories HelenOS

Rev

Rev 4029 | Rev 4109 | 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>
36
#include <arch/cp0.h>
37
#include <arch/exception.h>
703 jermar 38
#include <mm/as.h>
575 palkovsky 39
 
313 palkovsky 40
#include <userspace.h>
324 palkovsky 41
#include <arch/console.h>
326 palkovsky 42
#include <memstr.h>
391 jermar 43
#include <proc/thread.h>
1078 jermar 44
#include <proc/uarg.h>
330 palkovsky 45
#include <print.h>
1112 palkovsky 46
#include <syscall/syscall.h>
1642 vana 47
#include <sysinfo/sysinfo.h>
330 palkovsky 48
 
575 palkovsky 49
#include <arch/interrupt.h>
50
#include <console/chardev.h>
3136 jermar 51
#include <arch/barrier.h>
614 palkovsky 52
#include <arch/debugger.h>
1396 palkovsky 53
#include <genarch/fb/fb.h>
1993 decky 54
#include <genarch/fb/visuals.h>
1812 decky 55
#include <macros.h>
1936 decky 56
#include <ddi/device.h>
4029 svoboda 57
#include <config.h>
58
#include <string.h>
4046 jermar 59
#include <arch/drivers/msim.h>
575 palkovsky 60
 
61
#include <arch/asm/regname.h>
62
 
3922 decky 63
/* Size of the code jumping to the exception handler code
64
 * - J+NOP
326 palkovsky 65
 */
3922 decky 66
#define EXCEPTION_JUMP_SIZE  8
326 palkovsky 67
 
3922 decky 68
#define TLB_EXC    ((char *) 0x80000000)
69
#define NORM_EXC   ((char *) 0x80000180)
70
#define CACHE_EXC  ((char *) 0x80000100)
326 palkovsky 71
 
1686 decky 72
 
1742 palkovsky 73
/* Why the linker moves the variable 64K away in assembler
3922 decky 74
 * when not in .text section?
1742 palkovsky 75
 */
3922 decky 76
 
77
/* Stack pointer saved when entering user mode */
1780 jermar 78
uintptr_t supervisor_sp __attribute__ ((section (".text")));
1742 palkovsky 79
 
3922 decky 80
count_t cpu_count = 0;
81
 
4023 svoboda 82
/** Performs mips32-specific initialization before main_bsp() is called. */
3922 decky 83
void arch_pre_main(void *entry __attribute__((unused)), bootinfo_t *bootinfo)
1222 decky 84
{
85
    /* Setup usermode */
3922 decky 86
    init.cnt = bootinfo->cnt;
1686 decky 87
 
3922 decky 88
    count_t i;
89
    for (i = 0; i < min3(bootinfo->cnt, TASKMAP_MAX_RECORDS, CONFIG_INIT_TASKS); i++) {
90
        init.tasks[i].addr = bootinfo->tasks[i].addr;
91
        init.tasks[i].size = bootinfo->tasks[i].size;
4029 svoboda 92
        strncpy(init.tasks[i].name, bootinfo->tasks[i].name,
93
            CONFIG_TASK_NAME_BUFLEN);
3922 decky 94
    }
1686 decky 95
 
3922 decky 96
    for (i = 0; i < CPUMAP_MAX_RECORDS; i++) {
97
        if ((bootinfo->cpumap & (1 << i)) != 0)
98
            cpu_count++;
1686 decky 99
    }
1222 decky 100
}
101
 
26 jermar 102
void arch_pre_mm_init(void)
1 jermar 103
{
329 palkovsky 104
    /* It is not assumed by default */
413 jermar 105
    interrupts_disable();
575 palkovsky 106
 
107
    /* Initialize dispatch table */
590 palkovsky 108
    exception_init();
332 palkovsky 109
 
326 palkovsky 110
    /* Copy the exception vectors to the right places */
1936 decky 111
    memcpy(TLB_EXC, (char *) tlb_refill_entry, EXCEPTION_JUMP_SIZE);
3136 jermar 112
    smc_coherence_block(TLB_EXC, EXCEPTION_JUMP_SIZE);
1936 decky 113
    memcpy(NORM_EXC, (char *) exception_entry, EXCEPTION_JUMP_SIZE);
3136 jermar 114
    smc_coherence_block(NORM_EXC, EXCEPTION_JUMP_SIZE);
1936 decky 115
    memcpy(CACHE_EXC, (char *) cache_error_entry, EXCEPTION_JUMP_SIZE);
3136 jermar 116
    smc_coherence_block(CACHE_EXC, EXCEPTION_JUMP_SIZE);
1936 decky 117
 
1 jermar 118
    /*
3136 jermar 119
     * Switch to BEV normal level so that exception vectors point to the
120
     * kernel. Clear the error level.
1 jermar 121
     */
3136 jermar 122
    cp0_status_write(cp0_status_read() &
123
        ~(cp0_status_bev_bootstrap_bit | cp0_status_erl_error_bit));
3880 decky 124
 
125
    /*
126
     * Mask all interrupts
329 palkovsky 127
     */
128
    cp0_mask_all_int();
3880 decky 129
 
614 palkovsky 130
    debugger_init();
1 jermar 131
}
23 jermar 132
 
133
void arch_post_mm_init(void)
134
{
1936 decky 135
    interrupt_init();
4046 jermar 136
    msim_console(device_assign_devno());
1396 palkovsky 137
#ifdef CONFIG_FB
3136 jermar 138
    /* GXemul framebuffer */
3672 jermar 139
    fb_properties_t gxemul_prop = {
140
        .addr = 0x12000000,
141
        .offset = 0,
142
        .x = 640,
143
        .y = 480,
144
        .scan = 1920,
3880 decky 145
        .visual = VISUAL_BGR_8_8_8,
3672 jermar 146
    };
147
    fb_init(&gxemul_prop);
1396 palkovsky 148
#endif
3880 decky 149
 
3910 decky 150
#ifdef MACHINE_msim
3880 decky 151
    sysinfo_set_item_val("machine.msim", NULL, 1);
152
#endif
153
 
3910 decky 154
#ifdef MACHINE_simics
3880 decky 155
    sysinfo_set_item_val("machine.simics", NULL, 1);
156
#endif
157
 
3910 decky 158
#ifdef MACHINE_bgxemul
3880 decky 159
    sysinfo_set_item_val("machine.bgxemul", NULL, 1);
160
#endif
161
 
3910 decky 162
#ifdef MACHINE_lgxemul
3880 decky 163
    sysinfo_set_item_val("machine.lgxemul", NULL, 1);
164
#endif
23 jermar 165
}
32 jermar 166
 
1901 jermar 167
void arch_post_cpu_init(void)
168
{
169
}
170
 
503 jermar 171
void arch_pre_smp_init(void)
32 jermar 172
{
173
}
313 palkovsky 174
 
503 jermar 175
void arch_post_smp_init(void)
176
{
177
}
178
 
3913 decky 179
void calibrate_delay_loop(void)
180
{
181
}
182
 
1078 jermar 183
void userspace(uspace_arg_t *kernel_uarg)
313 palkovsky 184
{
2722 decky 185
    /* EXL = 1, UM = 1, IE = 1 */
313 palkovsky 186
    cp0_status_write(cp0_status_read() | (cp0_status_exl_exception_bit |
3136 jermar 187
        cp0_status_um_bit | cp0_status_ie_enabled_bit));
1780 jermar 188
    cp0_epc_write((uintptr_t) kernel_uarg->uspace_entry);
2722 decky 189
    userspace_asm(((uintptr_t) kernel_uarg->uspace_stack + PAGE_SIZE),
3136 jermar 190
        (uintptr_t) kernel_uarg->uspace_uarg,
191
        (uintptr_t) kernel_uarg->uspace_entry);
2722 decky 192
 
3880 decky 193
    while (1);
313 palkovsky 194
}
195
 
1187 jermar 196
/** Perform mips32 specific tasks needed before the new task is run. */
197
void before_task_runs_arch(void)
198
{
199
}
200
 
201
/** Perform mips32 specific tasks needed before the new thread is scheduled. */
313 palkovsky 202
void before_thread_runs_arch(void)
203
{
3136 jermar 204
    supervisor_sp = (uintptr_t) &THREAD->kstack[THREAD_STACK_SIZE -
205
        SP_DELTA];
313 palkovsky 206
}
897 jermar 207
 
208
void after_thread_ran_arch(void)
209
{
210
}
1112 palkovsky 211
 
1121 jermar 212
/** Set thread-local-storage pointer
1112 palkovsky 213
 *
214
 * We have it currently in K1, it is
215
 * possible to have it separately in the future.
216
 */
1780 jermar 217
unative_t sys_tls_set(unative_t addr)
1112 palkovsky 218
{
219
    return 0;
220
}
1474 palkovsky 221
 
2227 decky 222
void arch_reboot(void)
223
{
3228 decky 224
    ___halt();
2722 decky 225
 
3880 decky 226
    while (1);
2227 decky 227
}
228
 
3880 decky 229
/** Construct function pointer
230
 *
231
 * @param fptr   function pointer structure
232
 * @param addr   function address
233
 * @param caller calling function address
234
 *
235
 * @return address of the function pointer
236
 *
237
 */
238
void *arch_construct_function(fncptr_t *fptr, void *addr, void *caller)
239
{
240
    return addr;
241
}
242
 
1812 decky 243
/** @}
1702 cejka 244
 */