203 lines
6.9 KiB
C
203 lines
6.9 KiB
C
/* $NetBSD: loadfile.c,v 1.10 1998/06/25 06:45:46 ross Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 1997 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
|
|
* NASA Ames Research Center.
|
|
*
|
|
* 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.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the NetBSD
|
|
* Foundation, Inc. and its contributors.
|
|
* 4. Neither the name of The NetBSD Foundation nor the names of its
|
|
* contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
|
* ``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 FOUNDATION OR CONTRIBUTORS
|
|
* 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.
|
|
*/
|
|
/*-
|
|
* Copyright (c) 1992, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to Berkeley by
|
|
* Ralph Campbell.
|
|
*
|
|
* 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.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
|
|
*
|
|
* @(#)boot.c 8.1 (Berkeley) 6/10/93
|
|
*/
|
|
|
|
#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/bootinfo.h>
|
|
#include <machine/ia64_cpu.h>
|
|
#include <machine/vmparam.h>
|
|
|
|
#include "bootstrap.h"
|
|
#include "libski.h"
|
|
|
|
#define _KERNEL
|
|
|
|
static int elf64_exec(struct preloaded_file *amp);
|
|
|
|
struct file_format ia64_elf = { elf64_loadfile, elf64_exec };
|
|
|
|
#define PTE_MA_WB 0
|
|
#define PTE_MA_UC 4
|
|
#define PTE_MA_UCE 5
|
|
#define PTE_MA_WC 6
|
|
#define PTE_MA_NATPAGE 7
|
|
|
|
#define PTE_PL_KERN 0
|
|
#define PTE_PL_USER 3
|
|
|
|
#define PTE_AR_R 0
|
|
#define PTE_AR_RX 1
|
|
#define PTE_AR_RW 2
|
|
#define PTE_AR_RWX 3
|
|
#define PTE_AR_R_RW 4
|
|
#define PTE_AR_RX_RWX 5
|
|
#define PTE_AR_RWX_RW 6
|
|
#define PTE_AR_X_RX 7
|
|
|
|
/*
|
|
* A short-format VHPT entry. Also matches the TLB insertion format.
|
|
*/
|
|
struct ia64_pte {
|
|
u_int64_t pte_p :1; /* bits 0..0 */
|
|
u_int64_t pte_rv1 :1; /* bits 1..1 */
|
|
u_int64_t pte_ma :3; /* bits 2..4 */
|
|
u_int64_t pte_a :1; /* bits 5..5 */
|
|
u_int64_t pte_d :1; /* bits 6..6 */
|
|
u_int64_t pte_pl :2; /* bits 7..8 */
|
|
u_int64_t pte_ar :3; /* bits 9..11 */
|
|
u_int64_t pte_ppn :38; /* bits 12..49 */
|
|
u_int64_t pte_rv2 :2; /* bits 50..51 */
|
|
u_int64_t pte_ed :1; /* bits 52..52 */
|
|
u_int64_t pte_ig :11; /* bits 53..63 */
|
|
};
|
|
|
|
static struct bootinfo bootinfo;
|
|
|
|
void
|
|
enter_kernel(const char* filename, u_int64_t start, struct bootinfo *bi)
|
|
{
|
|
printf("Entering %s at 0x%lx...\n", filename, start);
|
|
|
|
while (*filename == '/')
|
|
filename++;
|
|
ssc(0, (u_int64_t) filename, 0, 0, SSC_LOAD_SYMBOLS);
|
|
|
|
__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 r8=%0" :: "r" (bi));
|
|
__asm __volatile("rfi;;");
|
|
}
|
|
|
|
static int
|
|
elf64_exec(struct preloaded_file *fp)
|
|
{
|
|
struct file_metadata *md;
|
|
Elf_Ehdr *hdr;
|
|
struct ia64_pte pte;
|
|
struct bootinfo *bi;
|
|
|
|
if ((md = file_findmetadata(fp, MODINFOMD_ELFHDR)) == NULL)
|
|
return(EFTYPE); /* XXX actually EFUCKUP */
|
|
hdr = (Elf_Ehdr *)&(md->md_data);
|
|
|
|
/*
|
|
* Ugly hack, similar to linux. Dump the bootinfo into a
|
|
* special page reserved in the link map.
|
|
*/
|
|
bi = &bootinfo;
|
|
bzero(bi, sizeof(struct bootinfo));
|
|
bi_load(bi, fp);
|
|
|
|
/*
|
|
* 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));
|
|
|
|
bzero(&pte, sizeof(pte));
|
|
pte.pte_p = 1;
|
|
pte.pte_ma = PTE_MA_WB;
|
|
pte.pte_a = 1;
|
|
pte.pte_d = 1;
|
|
pte.pte_pl = PTE_PL_KERN;
|
|
pte.pte_ar = PTE_AR_RWX;
|
|
pte.pte_ppn = 0;
|
|
|
|
__asm __volatile("mov cr.ifa=%0" :: "r"(IA64_RR_BASE(7)));
|
|
__asm __volatile("mov cr.itir=%0" :: "r"(28 << 2));
|
|
__asm __volatile("srlz.i;;");
|
|
__asm __volatile("itr.i itr[%0]=%1;;"
|
|
:: "r"(0), "r"(*(u_int64_t*)&pte));
|
|
__asm __volatile("srlz.i;;");
|
|
__asm __volatile("itr.d dtr[%0]=%1;;"
|
|
:: "r"(0), "r"(*(u_int64_t*)&pte));
|
|
__asm __volatile("srlz.i;;");
|
|
|
|
enter_kernel(fp->f_name, hdr->e_entry, bi);
|
|
}
|