Rev 1078 | Rev 1168 | Go to most recent revision | Details | Compare with Previous | 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> |
| 1078 | jermar | 44 | #include <proc/uarg.h> |
| 1121 | jermar | 45 | #include <syscall/syscall.h> |
| 519 | vana | 46 | |
| 78 | jermar | 47 | void arch_pre_mm_init(void) |
| 48 | { |
||
| 470 | jermar | 49 | /* Set Interruption Vector Address (i.e. location of interruption vector table). */ |
| 50 | iva_write((__address) &ivt); |
||
| 51 | srlz_d(); |
||
| 52 | |||
| 102 | jermar | 53 | ski_init_console(); |
| 435 | jermar | 54 | it_init(); |
| 1039 | decky | 55 | |
| 56 | /* Setup usermode */ |
||
| 1059 | jermar | 57 | init.cnt = 2; |
| 58 | init.tasks[0].addr = INIT0_ADDRESS; |
||
| 59 | init.tasks[0].size = INIT0_SIZE; |
||
| 60 | init.tasks[1].addr = INIT1_ADDRESS; |
||
| 61 | init.tasks[1].size = INIT1_SIZE; |
||
| 78 | jermar | 62 | } |
| 63 | |||
| 64 | void arch_post_mm_init(void) |
||
| 65 | { |
||
| 66 | } |
||
| 503 | jermar | 67 | |
| 68 | void arch_pre_smp_init(void) |
||
| 69 | { |
||
| 70 | } |
||
| 71 | |||
| 72 | void arch_post_smp_init(void) |
||
| 73 | { |
||
| 74 | } |
||
| 919 | jermar | 75 | |
| 76 | /** Enter userspace and never return. */ |
||
| 1078 | jermar | 77 | void userspace(uspace_arg_t *kernel_uarg) |
| 919 | jermar | 78 | { |
| 79 | psr_t psr; |
||
| 80 | rsc_t rsc; |
||
| 81 | |||
| 82 | psr.value = psr_read(); |
||
| 83 | psr.cpl = PL_USER; |
||
| 84 | psr.i = true; /* start with interrupts enabled */ |
||
| 85 | psr.ic = true; |
||
| 86 | psr.ri = 0; /* start with instruction #0 */ |
||
| 993 | jermar | 87 | psr.bn = 1; /* start in bank 0 */ |
| 919 | jermar | 88 | |
| 89 | __asm__ volatile ("mov %0 = ar.rsc\n" : "=r" (rsc.value)); |
||
| 90 | rsc.loadrs = 0; |
||
| 91 | rsc.be = false; |
||
| 92 | rsc.pl = PL_USER; |
||
| 93 | rsc.mode = 3; /* eager mode */ |
||
| 94 | |||
| 1078 | jermar | 95 | switch_to_userspace((__address) kernel_uarg->uspace_entry, |
| 96 | ((__address) kernel_uarg->uspace_stack)+PAGE_SIZE-ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT), |
||
| 97 | (__address) kernel_uarg->uspace_stack, |
||
| 98 | (__address) kernel_uarg->uspace_uarg, |
||
| 99 | psr.value, rsc.value); |
||
| 919 | jermar | 100 | |
| 101 | while (1) { |
||
| 102 | ; |
||
| 103 | } |
||
| 104 | } |
||
| 1121 | jermar | 105 | |
| 106 | /** Set thread-local-storage pointer. |
||
| 107 | * |
||
| 108 | * We use r13 (a.k.a. tp) for this purpose. |
||
| 109 | */ |
||
| 110 | __native sys_tls_set(__native addr) |
||
| 111 | { |
||
| 112 | return 0; |
||
| 113 | } |