c459265de7
register r8. We continue to write the bootinfo block at the same hardwired address, because the kernel still expects it there. It is expected that future kernels use register r8 to get to the bootinfo block and don't depend on the hardwired address anymore. Bump the loader version once again due to the interface change.
220 lines
7.4 KiB
C
220 lines
7.4 KiB
C
/* $FreeBSD$ */
|
|
/* $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.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 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 <stand.h>
|
|
#include <string.h>
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/linker.h>
|
|
#include <machine/elf.h>
|
|
#include <machine/bootinfo.h>
|
|
#include <machine/pte.h>
|
|
|
|
#include <efi.h>
|
|
#include <efilib.h>
|
|
|
|
#include "bootstrap.h"
|
|
|
|
#define _KERNEL
|
|
|
|
static int elf_exec(struct preloaded_file *amp);
|
|
|
|
struct file_format ia64_elf = { elf_loadfile, elf_exec };
|
|
|
|
static __inline u_int64_t
|
|
disable_ic()
|
|
{
|
|
u_int64_t psr;
|
|
__asm __volatile("mov %0=psr;;" : "=r" (psr));
|
|
__asm __volatile("rsm psr.ic|psr.i;; srlz.i;;");
|
|
return psr;
|
|
}
|
|
|
|
static __inline void
|
|
restore_ic(u_int64_t psr)
|
|
{
|
|
__asm __volatile("mov psr.l=%0;; srlz.i" :: "r" (psr));
|
|
}
|
|
|
|
/*
|
|
* Entered with psr.ic and psr.i both zero.
|
|
*/
|
|
void
|
|
enter_kernel(u_int64_t start, struct bootinfo *bi)
|
|
{
|
|
u_int64_t psr;
|
|
|
|
__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;;");
|
|
}
|
|
|
|
static int
|
|
elf_exec(struct preloaded_file *fp)
|
|
{
|
|
struct file_metadata *md;
|
|
Elf_Ehdr *hdr;
|
|
struct ia64_pte pte;
|
|
struct bootinfo *bi;
|
|
u_int64_t psr;
|
|
UINTN mapkey;
|
|
EFI_STATUS status;
|
|
|
|
if ((md = file_findmetadata(fp, MODINFOMD_ELFHDR)) == NULL)
|
|
return(EFTYPE); /* XXX actually EFUCKUP */
|
|
hdr = (Elf_Ehdr *)&(md->md_data);
|
|
|
|
printf("Entering %s at 0x%lx...\n", fp->f_name, hdr->e_entry);
|
|
|
|
/*
|
|
* Ugly hack, similar to linux. Dump the bootinfo into a
|
|
* special page reserved in the link map.
|
|
*/
|
|
bi = (struct bootinfo *) 0x508000;
|
|
bzero(bi, sizeof(struct bootinfo));
|
|
bi_load(bi, fp, &mapkey);
|
|
|
|
status = BS->ExitBootServices(IH, mapkey);
|
|
if (EFI_ERROR(status)) {
|
|
printf("ExitBootServices returned 0x%lx\n", status);
|
|
return;
|
|
}
|
|
|
|
psr = disable_ic();
|
|
|
|
/*
|
|
* 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("ptr.i %0,%1" :: "r"(IA64_RR_BASE(7)), "r"(28<<2));
|
|
__asm __volatile("ptr.d %0,%1" :: "r"(IA64_RR_BASE(7)), "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;;");
|
|
|
|
bzero(&pte, sizeof(pte));
|
|
pte.pte_p = 1;
|
|
pte.pte_ma = PTE_MA_UC;
|
|
pte.pte_a = 1;
|
|
pte.pte_d = 1;
|
|
pte.pte_pl = PTE_PL_KERN;
|
|
pte.pte_ar = PTE_AR_RWX;
|
|
pte.pte_ppn = 0xffffc000000 >> 12;
|
|
|
|
__asm __volatile("mov cr.ifa=%0" :: "r"(IA64_PHYS_TO_RR6(0xffffc000000)));
|
|
__asm __volatile("mov cr.itir=%0" :: "r"(26 << 2));
|
|
//__asm __volatile("ptr.d %0,%1" :: "r"(IA64_PHYS_TO_RR6(0xffffc000000)), "r"(26<<2));
|
|
__asm __volatile("srlz.i;;");
|
|
__asm __volatile("itr.d dtr[%0]=%1;;"
|
|
:: "r"(1), "r"(*(u_int64_t*)&pte));
|
|
__asm __volatile("srlz.i;;");
|
|
|
|
enter_kernel(hdr->e_entry, bi);
|
|
|
|
restore_ic(psr);
|
|
}
|