/*
* 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 ) {}
Messung V0.5 in Prozent C=96 H=98 G=96
¤ Dauer der Verarbeitung: 0.9 Sekunden
(vorverarbeitet am 2026-06-27)
¤
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