diff options
Diffstat (limited to 'sys/boot/ia64/common/exec.c')
-rw-r--r-- | sys/boot/ia64/common/exec.c | 268 |
1 files changed, 0 insertions, 268 deletions
diff --git a/sys/boot/ia64/common/exec.c b/sys/boot/ia64/common/exec.c deleted file mode 100644 index b721f97..0000000 --- a/sys/boot/ia64/common/exec.c +++ /dev/null @@ -1,268 +0,0 @@ -/*- - * Copyright (c) 2006 Marcel Moolenaar - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES - * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. - * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF - * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#include <sys/cdefs.h> -__FBSDID("$FreeBSD$"); - -#include <stand.h> -#include <string.h> - -#include <sys/param.h> -#include <sys/linker.h> -#include <machine/elf.h> -#include <machine/ia64_cpu.h> -#include <machine/pte.h> - -#include <efi.h> -#include <efilib.h> - -#include "libia64.h" - -static u_int itr_idx = 0; -static u_int dtr_idx = 0; - -static vm_offset_t ia64_text_start; -static size_t ia64_text_size; - -static vm_offset_t ia64_data_start; -static size_t ia64_data_size; - -static int elf64_exec(struct preloaded_file *amp); -static int elf64_obj_exec(struct preloaded_file *amp); - -static struct file_format ia64_elf = { - elf64_loadfile, - elf64_exec -}; -static struct file_format ia64_elf_obj = { - elf64_obj_loadfile, - elf64_obj_exec -}; - -struct file_format *file_formats[] = { - &ia64_elf, - &ia64_elf_obj, - NULL -}; - -static u_int -sz2shft(vm_offset_t ofs, vm_size_t sz) -{ - vm_size_t s; - u_int shft; - - shft = 12; /* Start with 4K */ - s = 1 << shft; - while (s <= sz) { - shft++; - s <<= 1; - } - do { - shft--; - s >>= 1; - } while (ofs & (s - 1)); - - return (shft); -} - -/* - * Entered with psr.ic and psr.i both zero. - */ -static void -enter_kernel(uint64_t start, struct bootinfo *bi) -{ - - __asm __volatile("srlz.i;;"); - __asm __volatile("mov cr.ipsr=%0" - :: "r"(IA64_PSR_IC - | IA64_PSR_DT - | IA64_PSR_RT - | IA64_PSR_IT - | IA64_PSR_BN)); - __asm __volatile("mov cr.iip=%0" :: "r"(start)); - __asm __volatile("mov cr.ifs=r0;;"); - __asm __volatile("mov ar.rsc=0;; flushrs;;"); - __asm __volatile("mov r8=%0" :: "r" (bi)); - __asm __volatile("rfi;;"); - - /* NOTREACHED */ -} - -static u_int -mmu_wire(vm_offset_t va, vm_paddr_t pa, u_int pgshft, u_int acc) -{ - pt_entry_t pte; - - /* Round up to the smallest possible page size. */ - if (pgshft < 12) - pgshft = 12; - /* Truncate to the largest possible page size (256MB). */ - if (pgshft > 28) - pgshft = 28; - /* Round down to a valid (mappable) page size. */ - if (pgshft > 14 && (pgshft & 1) != 0) - pgshft--; - - pte = PTE_PRESENT | PTE_MA_WB | PTE_ACCESSED | PTE_DIRTY | - PTE_PL_KERN | (acc & PTE_AR_MASK) | (pa & PTE_PPN_MASK); - - __asm __volatile("mov cr.ifa=%0" :: "r"(va)); - __asm __volatile("mov cr.itir=%0" :: "r"(pgshft << 2)); - __asm __volatile("srlz.d;;"); - - __asm __volatile("ptr.d %0,%1" :: "r"(va), "r"(pgshft << 2)); - __asm __volatile("srlz.d;;"); - __asm __volatile("itr.d dtr[%0]=%1" :: "r"(dtr_idx), "r"(pte)); - __asm __volatile("srlz.d;;"); - dtr_idx++; - - if (acc == PTE_AR_RWX || acc == PTE_AR_RX) { - __asm __volatile("ptr.i %0,%1;;" :: "r"(va), "r"(pgshft << 2)); - __asm __volatile("srlz.i;;"); - __asm __volatile("itr.i itr[%0]=%1;;" :: "r"(itr_idx), "r"(pte)); - __asm __volatile("srlz.i;;"); - itr_idx++; - } - - return (pgshft); -} - -static void -mmu_setup_legacy(uint64_t entry) -{ - - /* - * Region 6 is direct mapped UC and region 7 is direct mapped - * WC. The details of this is controlled by the Alt {I,D}TLB - * handlers. Here we just make sure that they have the largest - * possible page size to minimise TLB usage. - */ - ia64_set_rr(IA64_RR_BASE(6), (6 << 8) | (28 << 2)); - ia64_set_rr(IA64_RR_BASE(7), (7 << 8) | (28 << 2)); - __asm __volatile("srlz.i;;"); - - mmu_wire(entry, IA64_RR_MASK(entry), 28, PTE_AR_RWX); -} - -static void -mmu_setup_paged(struct bootinfo *bi) -{ - void *pa; - size_t sz; - u_int shft; - - ia64_set_rr(IA64_RR_BASE(IA64_PBVM_RR), - (IA64_PBVM_RR << 8) | (IA64_PBVM_PAGE_SHIFT << 2)); - __asm __volatile("srlz.i;;"); - - /* Wire the PBVM page table. */ - mmu_wire(IA64_PBVM_PGTBL, (uintptr_t)ia64_pgtbl, - sz2shft(IA64_PBVM_PGTBL, ia64_pgtblsz), PTE_AR_RW); - - /* Wire as much of the text segment as we can. */ - sz = ia64_text_size; /* XXX */ - pa = ia64_va2pa(ia64_text_start, &ia64_text_size); - ia64_text_size = sz; /* XXX */ - shft = sz2shft(ia64_text_start, ia64_text_size); - shft = mmu_wire(ia64_text_start, (uintptr_t)pa, shft, PTE_AR_RWX); - ia64_copyin(&shft, (uintptr_t)&bi->bi_text_mapped, 4); - - /* Wire as much of the data segment as well. */ - sz = ia64_data_size; /* XXX */ - pa = ia64_va2pa(ia64_data_start, &ia64_data_size); - ia64_data_size = sz; /* XXX */ - shft = sz2shft(ia64_data_start, ia64_data_size); - shft = mmu_wire(ia64_data_start, (uintptr_t)pa, shft, PTE_AR_RW); - ia64_copyin(&shft, (uintptr_t)&bi->bi_data_mapped, 4); - - /* Update the bootinfo with the number of TRs used. */ - ia64_copyin(&itr_idx, (uintptr_t)&bi->bi_itr_used, 4); - ia64_copyin(&dtr_idx, (uintptr_t)&bi->bi_dtr_used, 4); -} - -static int -elf64_exec(struct preloaded_file *fp) -{ - struct bootinfo *bi; - struct file_metadata *md; - Elf_Ehdr *hdr; - int error; - - md = file_findmetadata(fp, MODINFOMD_ELFHDR); - if (md == NULL) - return (EINVAL); - - error = ia64_bootinfo(fp, &bi); - if (error) - return (error); - - hdr = (Elf_Ehdr *)&(md->md_data); - printf("Entering %s at 0x%lx...\n", fp->f_name, hdr->e_entry); - - error = ia64_platform_enter(fp->f_name); - if (error) - return (error); - - __asm __volatile("rsm psr.ic|psr.i;;"); - __asm __volatile("srlz.i;;"); - - if (IS_LEGACY_KERNEL()) - mmu_setup_legacy(hdr->e_entry); - else - mmu_setup_paged(bi); - - enter_kernel(hdr->e_entry, bi); - /* NOTREACHED */ - return (EDOOFUS); -} - -static int -elf64_obj_exec(struct preloaded_file *fp) -{ - - printf("%s called for preloaded file %p (=%s):\n", __func__, fp, - fp->f_name); - return (ENOSYS); -} - -void -ia64_loadseg(Elf_Ehdr *eh, Elf_Phdr *ph, uint64_t delta) -{ - - if (eh->e_type != ET_EXEC) - return; - - if (ph->p_flags & PF_X) { - ia64_text_start = ph->p_vaddr + delta; - ia64_text_size = ph->p_memsz; - - ia64_sync_icache(ia64_text_start, ia64_text_size); - } else { - ia64_data_start = ph->p_vaddr + delta; - ia64_data_size = ph->p_memsz; - } -} - |