| /* |
| * Copyright (c) 2009 Corey Tabaka |
| * Copyright (c) 2015-2018 Intel Corporation |
| * Copyright (c) 2016 Travis Geiselbrecht |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining |
| * a copy of this software and associated documentation files |
| * (the "Software"), to deal in the Software without restriction, |
| * including without limitation the rights to use, copy, modify, merge, |
| * publish, distribute, sublicense, and/or sell copies of the Software, |
| * and to permit persons to whom the Software is furnished to do so, |
| * subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be |
| * included in all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
| * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY |
| * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
| * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
| * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| */ |
| #include <arch/x86.h> |
| #include <arch/x86/mmu.h> |
| #include <assert.h> |
| #include <dev/interrupt/x86_interrupts.h> |
| #include <dev/timer/x86_pit.h> |
| #include <kernel/vm.h> |
| #include <string.h> |
| |
| #ifdef WITH_KERNEL_VM |
| struct mmu_initial_mapping mmu_initial_mappings[] = { |
| /* |
| * This entry will be used in pmm arena |
| * structure member size will be updated in bootstrap code. |
| */ |
| { |
| .phys = MEMBASE + KERNEL_LOAD_OFFSET, |
| .virt = KERNEL_BASE + KERNEL_LOAD_OFFSET, |
| .size = MEMSIZE, |
| .flags = MMU_INITIAL_MAPPING_FLAG_DYNAMIC, |
| .name = "ram", |
| }, |
| {0, 0, 0, 0, 0}}; |
| |
| static pmm_arena_t ram_arena = { |
| .name = "ram", |
| .base = MEMBASE, |
| .size = 0, |
| .priority = 1, |
| .flags = PMM_ARENA_FLAG_KMAP, |
| }; |
| |
| void platform_init_mmu_mappings(void) { |
| struct mmu_initial_mapping* m = mmu_initial_mappings; |
| |
| for (uint i = 0; i < countof(mmu_initial_mappings); i++, m++) { |
| if (!(m->flags & MMU_INITIAL_MAPPING_FLAG_DYNAMIC)) |
| continue; |
| |
| if (strcmp(m->name, ram_arena.name) == 0) { |
| /* update ram_arena */ |
| ram_arena.base = m->phys; |
| ram_arena.size = m->size; |
| ram_arena.flags = PMM_ARENA_FLAG_KMAP; |
| |
| break; |
| } |
| } |
| pmm_add_arena(&ram_arena); |
| } |
| #endif |
| |
| void platform_early_init(void) { |
| /* initialize the interrupt controller */ |
| x86_init_interrupts(); |
| |
| /* initialize the timer */ |
| x86_init_pit(); |
| } |
| |
| void platform_init(void) {} |