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#include <config.h>
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#include <config.h>
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#include <memstr.h>
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#include <memstr.h>
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#include <interrupt.h>
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#include <interrupt.h>
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#include <print.h>
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#include <print.h>
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#include <panic.h>
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#include <panic.h>
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#include <align.h>
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/* Definitions for identity page mapper */
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/* Definitions for identity page mapper */
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pte_t helper_ptl1[512] __attribute__((aligned (PAGE_SIZE)));
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pte_t helper_ptl1[512] __attribute__((aligned (PAGE_SIZE)));
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pte_t helper_ptl2[512] __attribute__((aligned (PAGE_SIZE)));
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pte_t helper_ptl2[512] __attribute__((aligned (PAGE_SIZE)));
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pte_t helper_ptl3[512] __attribute__((aligned (PAGE_SIZE)));
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pte_t helper_ptl3[512] __attribute__((aligned (PAGE_SIZE)));
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    }
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    }
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#define SETUP_FRAME(ptl3, page, tgt)  { \
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#define SETUP_FRAME(ptl3, page, tgt)  { \
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    SET_FRAME_ADDRESS_ARCH(ptl3, PTL3_INDEX_ARCH(page), (__address)KA2PA(tgt)); \
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    SET_FRAME_ADDRESS_ARCH(ptl3, PTL3_INDEX_ARCH(page), (__address)KA2PA(tgt)); \
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        SET_FRAME_FLAGS_ARCH(ptl3, PTL3_INDEX_ARCH(page), PAGE_WRITE | PAGE_EXEC); \
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        SET_FRAME_FLAGS_ARCH(ptl3, PTL3_INDEX_ARCH(page), PAGE_WRITE | PAGE_EXEC); \
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    }
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    }
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void page_arch_init(void)
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void page_arch_init(void)
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{
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{
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    __address cur;
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    __address cur;
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    int flags;
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    int i;
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    int identity_flags = PAGE_CACHEABLE | PAGE_EXEC | PAGE_GLOBAL;
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    if (config.cpu_active == 1) {
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    if (config.cpu_active == 1) {
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        page_mapping_operations = &pt_mapping_operations;
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        page_mapping_operations = &pt_mapping_operations;
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        /*
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        /*
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         * PA2KA(identity) mapping for all frames.
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         * PA2KA(identity) mapping for all frames.
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         */
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         */
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        for (cur = 0; cur < last_frame; cur += FRAME_SIZE) {
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        for (cur = 0; cur < last_frame; cur += FRAME_SIZE) {
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            flags = PAGE_CACHEABLE | PAGE_EXEC;
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            /* Standard identity mapping */
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            if ((PA2KA(cur) >= config.base) && (PA2KA(cur) < config.base + config.kernel_size))
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            page_mapping_insert(AS_KERNEL, PA2KA_IDENT(cur), cur, identity_flags);
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        }
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                flags |= PAGE_GLOBAL;
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        /* Upper kernel mapping
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         * - from zero to top of kernel (include bottom addresses
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         *   because some are needed for init )
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         */
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        for (cur = PA2KA_CODE(0); cur < config.base+config.kernel_size; cur += FRAME_SIZE) {
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            page_mapping_insert(AS_KERNEL, PA2KA(cur), cur, flags);
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            page_mapping_insert(AS_KERNEL, cur, KA2PA(cur), identity_flags);
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        }
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        }
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        for (i=0; i < init.cnt; i++) {
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            for (cur=init.tasks[i].addr;cur < init.tasks[i].size; cur += FRAME_SIZE) {
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                page_mapping_insert(AS_KERNEL, PA2KA_CODE(KA2PA(cur)), KA2PA(cur), identity_flags);
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            }
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        }
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        exc_register(14, "page_fault", (iroutine)page_fault);
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        exc_register(14, "page_fault", (iroutine)page_fault);
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        write_cr3((__address) AS_KERNEL->page_table);
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        write_cr3((__address) AS_KERNEL->page_table);
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    }
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    }
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    else {
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    else {
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        write_cr3((__address) AS_KERNEL->page_table);
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        write_cr3((__address) AS_KERNEL->page_table);