Subversion Repositories HelenOS

Rev

Rev 3386 | Rev 4263 | 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>
4153 mejdrech 55
#include <genarch/drivers/dsrln/dsrlnin.h>
56
#include <genarch/drivers/dsrln/dsrlnout.h>
57
#include <genarch/srln/srln.h>
1812 decky 58
#include <macros.h>
4153 mejdrech 59
#include <config.h>
60
#include <string.h>
61
#include <arch/drivers/msim.h>
575 palkovsky 62
 
63
#include <arch/asm/regname.h>
64
 
4153 mejdrech 65
/* Size of the code jumping to the exception handler code
66
 * - J+NOP
326 palkovsky 67
 */
4153 mejdrech 68
#define EXCEPTION_JUMP_SIZE  8
326 palkovsky 69
 
4153 mejdrech 70
#define TLB_EXC    ((char *) 0x80000000)
71
#define NORM_EXC   ((char *) 0x80000180)
72
#define CACHE_EXC  ((char *) 0x80000100)
326 palkovsky 73
 
1686 decky 74
 
1742 palkovsky 75
/* Why the linker moves the variable 64K away in assembler
4153 mejdrech 76
 * when not in .text section?
1742 palkovsky 77
 */
4153 mejdrech 78
 
79
/* Stack pointer saved when entering user mode */
1780 jermar 80
uintptr_t supervisor_sp __attribute__ ((section (".text")));
1742 palkovsky 81
 
4153 mejdrech 82
count_t cpu_count = 0;
83
 
84
/** Performs mips32-specific initialization before main_bsp() is called. */
85
void arch_pre_main(void *entry __attribute__((unused)), bootinfo_t *bootinfo)
1222 decky 86
{
87
    /* Setup usermode */
4153 mejdrech 88
    init.cnt = bootinfo->cnt;
1686 decky 89
 
4153 mejdrech 90
    count_t i;
91
    for (i = 0; i < min3(bootinfo->cnt, TASKMAP_MAX_RECORDS, CONFIG_INIT_TASKS); i++) {
92
        init.tasks[i].addr = bootinfo->tasks[i].addr;
93
        init.tasks[i].size = bootinfo->tasks[i].size;
94
        strncpy(init.tasks[i].name, bootinfo->tasks[i].name,
95
            CONFIG_TASK_NAME_BUFLEN);
96
    }
1686 decky 97
 
4153 mejdrech 98
    for (i = 0; i < CPUMAP_MAX_RECORDS; i++) {
99
        if ((bootinfo->cpumap & (1 << i)) != 0)
100
            cpu_count++;
1686 decky 101
    }
1222 decky 102
}
103
 
26 jermar 104
void arch_pre_mm_init(void)
1 jermar 105
{
329 palkovsky 106
    /* It is not assumed by default */
413 jermar 107
    interrupts_disable();
575 palkovsky 108
 
109
    /* Initialize dispatch table */
590 palkovsky 110
    exception_init();
332 palkovsky 111
 
326 palkovsky 112
    /* Copy the exception vectors to the right places */
1936 decky 113
    memcpy(TLB_EXC, (char *) tlb_refill_entry, EXCEPTION_JUMP_SIZE);
3136 jermar 114
    smc_coherence_block(TLB_EXC, EXCEPTION_JUMP_SIZE);
1936 decky 115
    memcpy(NORM_EXC, (char *) exception_entry, EXCEPTION_JUMP_SIZE);
3136 jermar 116
    smc_coherence_block(NORM_EXC, EXCEPTION_JUMP_SIZE);
1936 decky 117
    memcpy(CACHE_EXC, (char *) cache_error_entry, EXCEPTION_JUMP_SIZE);
3136 jermar 118
    smc_coherence_block(CACHE_EXC, EXCEPTION_JUMP_SIZE);
1936 decky 119
 
1 jermar 120
    /*
3136 jermar 121
     * Switch to BEV normal level so that exception vectors point to the
122
     * kernel. Clear the error level.
1 jermar 123
     */
3136 jermar 124
    cp0_status_write(cp0_status_read() &
125
        ~(cp0_status_bev_bootstrap_bit | cp0_status_erl_error_bit));
4153 mejdrech 126
 
127
    /*
128
     * Mask all interrupts
329 palkovsky 129
     */
130
    cp0_mask_all_int();
4153 mejdrech 131
 
614 palkovsky 132
    debugger_init();
1 jermar 133
}
23 jermar 134
 
135
void arch_post_mm_init(void)
136
{
1936 decky 137
    interrupt_init();
4153 mejdrech 138
 
1396 palkovsky 139
#ifdef CONFIG_FB
3136 jermar 140
    /* GXemul framebuffer */
4153 mejdrech 141
    fb_properties_t gxemul_prop = {
142
        .addr = 0x12000000,
143
        .offset = 0,
144
        .x = 640,
145
        .y = 480,
146
        .scan = 1920,
147
        .visual = VISUAL_BGR_8_8_8,
148
    };
149
    fb_init(&gxemul_prop);
150
#else
151
#ifdef CONFIG_MIPS_PRN
152
    dsrlnout_init((ioport8_t *) MSIM_KBD_ADDRESS);
153
#endif /* CONFIG_MIPS_PRN */
154
#endif /* CONFIG_FB */
23 jermar 155
}
32 jermar 156
 
1901 jermar 157
void arch_post_cpu_init(void)
158
{
159
}
160
 
503 jermar 161
void arch_pre_smp_init(void)
32 jermar 162
{
163
}
313 palkovsky 164
 
503 jermar 165
void arch_post_smp_init(void)
166
{
4153 mejdrech 167
#ifdef CONFIG_MIPS_KBD
168
    /*
169
     * Initialize the msim/GXemul keyboard port. Then initialize the serial line
170
     * module and connect it to the msim/GXemul keyboard. Enable keyboard interrupts.
171
     */
172
    indev_t *kbrdin = dsrlnin_init((dsrlnin_t *) MSIM_KBD_ADDRESS, MSIM_KBD_IRQ);
173
    if (kbrdin) {
174
        srln_init(kbrdin);
175
        cp0_unmask_int(MSIM_KBD_IRQ);
176
    }
177
 
178
    /*
179
     * This is the necessary evil until the userspace driver is entirely
180
     * self-sufficient.
181
     */
182
    sysinfo_set_item_val("kbd", NULL, true);
183
    sysinfo_set_item_val("kbd.inr", NULL, MSIM_KBD_IRQ);
184
    sysinfo_set_item_val("kbd.address.virtual", NULL, MSIM_KBD_ADDRESS);
185
#endif
503 jermar 186
}
187
 
4153 mejdrech 188
void calibrate_delay_loop(void)
189
{
190
}
191
 
1078 jermar 192
void userspace(uspace_arg_t *kernel_uarg)
313 palkovsky 193
{
2722 decky 194
    /* EXL = 1, UM = 1, IE = 1 */
313 palkovsky 195
    cp0_status_write(cp0_status_read() | (cp0_status_exl_exception_bit |
3136 jermar 196
        cp0_status_um_bit | cp0_status_ie_enabled_bit));
1780 jermar 197
    cp0_epc_write((uintptr_t) kernel_uarg->uspace_entry);
2722 decky 198
    userspace_asm(((uintptr_t) kernel_uarg->uspace_stack + PAGE_SIZE),
3136 jermar 199
        (uintptr_t) kernel_uarg->uspace_uarg,
200
        (uintptr_t) kernel_uarg->uspace_entry);
2722 decky 201
 
4153 mejdrech 202
    while (1);
313 palkovsky 203
}
204
 
1187 jermar 205
/** Perform mips32 specific tasks needed before the new task is run. */
206
void before_task_runs_arch(void)
207
{
208
}
209
 
210
/** Perform mips32 specific tasks needed before the new thread is scheduled. */
313 palkovsky 211
void before_thread_runs_arch(void)
212
{
3136 jermar 213
    supervisor_sp = (uintptr_t) &THREAD->kstack[THREAD_STACK_SIZE -
214
        SP_DELTA];
313 palkovsky 215
}
897 jermar 216
 
217
void after_thread_ran_arch(void)
218
{
219
}
1112 palkovsky 220
 
1121 jermar 221
/** Set thread-local-storage pointer
1112 palkovsky 222
 *
223
 * We have it currently in K1, it is
224
 * possible to have it separately in the future.
225
 */
1780 jermar 226
unative_t sys_tls_set(unative_t addr)
1112 palkovsky 227
{
228
    return 0;
229
}
1474 palkovsky 230
 
2227 decky 231
void arch_reboot(void)
232
{
3228 decky 233
    ___halt();
4153 mejdrech 234
    while (1);
2227 decky 235
}
236
 
4153 mejdrech 237
/** Construct function pointer
238
 *
239
 * @param fptr   function pointer structure
240
 * @param addr   function address
241
 * @param caller calling function address
242
 *
243
 * @return address of the function pointer
244
 *
245
 */
246
void *arch_construct_function(fncptr_t *fptr, void *addr, void *caller)
247
{
248
    return addr;
249
}
250
 
1812 decky 251
/** @}
1702 cejka 252
 */