Details | Last modification | View Log | RSS feed
Rev | Author | Line No. | Line |
---|---|---|---|
36 | jermar | 1 | /* |
2 | * Copyright (C) 2005 Jakub 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 | |||
78 | jermar | 29 | #include <arch.h> |
30 | #include <arch/ski/ski.h> |
||
435 | jermar | 31 | #include <arch/drivers/it.h> |
470 | jermar | 32 | #include <arch/interrupt.h> |
33 | #include <arch/barrier.h> |
||
919 | jermar | 34 | #include <arch/asm.h> |
35 | #include <arch/register.h> |
||
470 | jermar | 36 | #include <arch/types.h> |
919 | jermar | 37 | #include <arch/context.h> |
962 | jermar | 38 | #include <arch/stack.h> |
919 | jermar | 39 | #include <arch/mm/page.h> |
40 | #include <mm/as.h> |
||
41 | #include <config.h> |
||
42 | #include <userspace.h> |
||
519 | vana | 43 | #include <console/console.h> |
44 | |||
78 | jermar | 45 | void arch_pre_mm_init(void) |
46 | { |
||
470 | jermar | 47 | /* Set Interruption Vector Address (i.e. location of interruption vector table). */ |
48 | iva_write((__address) &ivt); |
||
49 | srlz_d(); |
||
50 | |||
102 | jermar | 51 | ski_init_console(); |
435 | jermar | 52 | it_init(); |
1039 | decky | 53 | |
54 | /* Setup usermode */ |
||
1059 | jermar | 55 | init.cnt = 2; |
56 | init.tasks[0].addr = INIT0_ADDRESS; |
||
57 | init.tasks[0].size = INIT0_SIZE; |
||
58 | init.tasks[1].addr = INIT1_ADDRESS; |
||
59 | init.tasks[1].size = INIT1_SIZE; |
||
78 | jermar | 60 | } |
61 | |||
62 | void arch_post_mm_init(void) |
||
63 | { |
||
64 | } |
||
503 | jermar | 65 | |
66 | void arch_pre_smp_init(void) |
||
67 | { |
||
68 | } |
||
69 | |||
70 | void arch_post_smp_init(void) |
||
71 | { |
||
72 | } |
||
919 | jermar | 73 | |
74 | /** Enter userspace and never return. */ |
||
938 | jermar | 75 | void userspace(__address entry) |
919 | jermar | 76 | { |
77 | psr_t psr; |
||
78 | rsc_t rsc; |
||
79 | |||
80 | psr.value = psr_read(); |
||
81 | psr.cpl = PL_USER; |
||
82 | psr.i = true; /* start with interrupts enabled */ |
||
83 | psr.ic = true; |
||
84 | psr.ri = 0; /* start with instruction #0 */ |
||
993 | jermar | 85 | psr.bn = 1; /* start in bank 0 */ |
919 | jermar | 86 | |
87 | __asm__ volatile ("mov %0 = ar.rsc\n" : "=r" (rsc.value)); |
||
88 | rsc.loadrs = 0; |
||
89 | rsc.be = false; |
||
90 | rsc.pl = PL_USER; |
||
91 | rsc.mode = 3; /* eager mode */ |
||
92 | |||
962 | jermar | 93 | switch_to_userspace(entry, USTACK_ADDRESS+PAGE_SIZE-ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT), USTACK_ADDRESS, psr.value, rsc.value); |
919 | jermar | 94 | |
95 | while (1) { |
||
96 | ; |
||
97 | } |
||
98 | } |