Source-Changes-HG archive
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Old Index]
[src/trunk]: src/sys/arch/i386/stand/efiboot fix to be able to boot amd64 ker...
details: https://anonhg.NetBSD.org/src/rev/4284e3a87e14
branches: trunk
changeset: 821903:4284e3a87e14
user: nonaka <nonaka%NetBSD.org@localhost>
date: Tue Feb 21 10:53:37 2017 +0000
description:
fix to be able to boot amd64 kernel from 32bit efiboot (booia32.efi).
diffstat:
sys/arch/i386/stand/efiboot/TODO.efiboot | 1 -
sys/arch/i386/stand/efiboot/bootia32/Makefile | 4 +-
sys/arch/i386/stand/efiboot/bootia32/efibootia32.c | 28 ++-
sys/arch/i386/stand/efiboot/bootia32/startprog32.S | 243 +++++++++++++++++++++
4 files changed, 270 insertions(+), 6 deletions(-)
diffs (truncated from 325 to 300 lines):
diff -r add70c03cf2d -r 4284e3a87e14 sys/arch/i386/stand/efiboot/TODO.efiboot
--- a/sys/arch/i386/stand/efiboot/TODO.efiboot Tue Feb 21 10:40:30 2017 +0000
+++ b/sys/arch/i386/stand/efiboot/TODO.efiboot Tue Feb 21 10:53:37 2017 +0000
@@ -3,7 +3,6 @@
* boot from CD/DVD (bootable from CD/DVD, but root fs not found.)
* load boot.cfg from EFI system partition (FAT32)
* fix module_init(). need to allocate memory for modules.
- * bootia32.efi can load kernel, but can't start kernel
- kernel
* handle UEFI variables (/dev/efivar)
diff -r add70c03cf2d -r 4284e3a87e14 sys/arch/i386/stand/efiboot/bootia32/Makefile
--- a/sys/arch/i386/stand/efiboot/bootia32/Makefile Tue Feb 21 10:40:30 2017 +0000
+++ b/sys/arch/i386/stand/efiboot/bootia32/Makefile Tue Feb 21 10:53:37 2017 +0000
@@ -1,9 +1,9 @@
-# $NetBSD: Makefile,v 1.1 2017/01/24 11:09:14 nonaka Exp $
+# $NetBSD: Makefile,v 1.2 2017/02/21 10:53:37 nonaka Exp $
PROG= bootia32.efi
OBJFMT= pei-i386
-EXTRA_SOURCES= efibootia32.c
+EXTRA_SOURCES= efibootia32.c startprog32.S
CPUFLAGS= -march=i686 -mtune=i686
GNUEFIARCH= ia32
diff -r add70c03cf2d -r 4284e3a87e14 sys/arch/i386/stand/efiboot/bootia32/efibootia32.c
--- a/sys/arch/i386/stand/efiboot/bootia32/efibootia32.c Tue Feb 21 10:40:30 2017 +0000
+++ b/sys/arch/i386/stand/efiboot/bootia32/efibootia32.c Tue Feb 21 10:53:37 2017 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: efibootia32.c,v 1.1 2017/01/24 11:09:14 nonaka Exp $ */
+/* $NetBSD: efibootia32.c,v 1.2 2017/02/21 10:53:37 nonaka Exp $ */
/*-
* Copyright (c) 2016 Kimihiro Nonaka <nonaka%netbsd.org@localhost>
@@ -32,18 +32,40 @@
struct x86_boot_params boot_params;
+void startprog32_start(physaddr_t, uint32_t, uint32_t *, physaddr_t,
+ physaddr_t, physaddr_t, u_long, void *);
+extern void (*startprog32)(physaddr_t, uint32_t, uint32_t *, physaddr_t,
+ physaddr_t, physaddr_t, u_long, void *);
+extern u_int startprog32_size;
+
void
efi_md_init(void)
{
- /* Nothing to do */
+ EFI_STATUS status;
+ EFI_PHYSICAL_ADDRESS addr = EFI_ALLOCATE_MAX_ADDRESS;
+ u_int sz = EFI_SIZE_TO_PAGES(startprog32_size);
+
+ status = uefi_call_wrapper(BS->AllocatePages, 4, AllocateMaxAddress,
+ EfiLoaderData, sz, &addr);
+ if (EFI_ERROR(status))
+ Panic(L"%a: AllocatePages() failed: %d page(s): %r",
+ __func__, sz, status);
+ startprog32 = (void *)(u_long)addr;
+ CopyMem(startprog32, startprog32_start, startprog32_size);
}
+/* ARGSUSED */
void
startprog(physaddr_t entry, uint32_t argc, uint32_t *argv, physaddr_t sp)
{
- Panic(L"%a: not implemented", __func__);
+
+ (*startprog32)(entry, argc, argv,
+ (physaddr_t)startprog32 + startprog32_size,
+ efi_kernel_start, efi_kernel_start + efi_loadaddr,
+ efi_kernel_size, startprog32);
}
+/* ARGSUSED */
void
multiboot(physaddr_t entry, physaddr_t header, physaddr_t sp)
{
diff -r add70c03cf2d -r 4284e3a87e14 sys/arch/i386/stand/efiboot/bootia32/startprog32.S
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/arch/i386/stand/efiboot/bootia32/startprog32.S Tue Feb 21 10:53:37 2017 +0000
@@ -0,0 +1,243 @@
+/* $NetBSD: startprog32.S,v 1.1 2017/02/21 10:53:37 nonaka Exp $ */
+/* NetBSD: startprog.S,v 1.4 2016/12/04 08:21:08 maxv Exp */
+
+/*
+ * Ported to boot 386BSD by Julian Elischer (julian%tfs.com@localhost) Sept 1992
+ *
+ * Mach Operating System
+ * Copyright (c) 1992, 1991 Carnegie Mellon University
+ * All Rights Reserved.
+ *
+ * Permission to use, copy, modify and distribute this software and its
+ * documentation is hereby granted, provided that both the copyright
+ * notice and this permission notice appear in all copies of the
+ * software, derivative works or modified versions, and any portions
+ * thereof, and that both notices appear in supporting documentation.
+ *
+ * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
+ * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
+ * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
+ *
+ * Carnegie Mellon requests users of this software to return to
+ *
+ * Software Distribution Coordinator or Software.Distribution%CS.CMU.EDU@localhost
+ * School of Computer Science
+ * Carnegie Mellon University
+ * Pittsburgh PA 15213-3890
+ *
+ * any improvements or extensions that they make and grant Carnegie Mellon
+ * the rights to redistribute these changes.
+ */
+
+/*
+ * Copyright 1988, 1989, 1990, 1991, 1992
+ * by Intel Corporation, Santa Clara, California.
+ *
+ * All Rights Reserved
+ *
+ * Permission to use, copy, modify, and distribute this software and
+ * its documentation for any purpose and without fee is hereby
+ * granted, provided that the above copyright notice appears in all
+ * copies and that both the copyright notice and this permission notice
+ * appear in supporting documentation, and that the name of Intel
+ * not be used in advertising or publicity pertaining to distribution
+ * of the software without specific, written prior permission.
+ *
+ * INTEL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS,
+ * IN NO EVENT SHALL INTEL BE LIABLE FOR ANY SPECIAL, INDIRECT, OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+ * LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT,
+ * NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
+ * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <machine/asm.h>
+#include <machine/specialreg.h>
+
+#define CODE_SEGMENT 0x08
+#define DATA_SEGMENT 0x10
+
+ .align 16
+ .globl _C_LABEL(startprog32)
+_C_LABEL(startprog32):
+ .quad 0
+
+ .globl _C_LABEL(startprog32_size)
+_C_LABEL(startprog32_size):
+ .long startprog32_end - _C_LABEL(startprog32_start)
+
+ .text
+ .p2align 4,,15
+
+/*
+ * startprog32(entry,argc,argv,stack,kern_start,kern_load,kern_size,loadaddr)
+ */
+ENTRY(startprog32_start)
+start:
+ pushl %ebp
+ movl %esp, %ebp
+
+ /*
+ * 8(%ebp): kernel entry address
+ * 12(%ebp): argc
+ * 16(%ebp): argv
+ * 20(%ebp): stack address
+ * 24(%ebp): kernel start address
+ * 28(%ebp): loaded kernel address
+ * 32(%ebp): loaded kernel size
+ * 36(%ebp): loaded start address
+ */
+
+ cli
+
+ /* Prepare a new stack */
+ movl 20(%ebp), %eax /* stack */
+ subl $4, %eax
+ movl %eax, %edi
+
+ /* Push some number of args onto the stack */
+ movl 12(%ebp), %ecx /* argc */
+ movl %ecx, %eax
+ decl %eax
+ shl $2, %eax
+ addl 16(%ebp), %eax /* ptr to last arg */
+ movl %eax, %esi
+
+ std /* backwards */
+ rep
+ movsl /* copy %ds:(%esi) -> %es:(%edi) */
+ cld
+ mov %edi, %edx /* %edx: new stack pointer */
+
+ /* Copy kernel */
+ movl 24(%esp), %edi /* dest */
+ movl 28(%esp), %esi /* src */
+ movl 32(%esp), %ecx /* size */
+#if defined(NO_OVERLAP)
+ movl %ecx, %eax
+#else
+ movl %edi, %eax
+ subl %esi, %eax
+ cmpl %ecx, %eax /* overlapping? */
+ movl %ecx, %eax
+ jb .Lbackwards
+#endif
+ /* nope, copy forwards. */
+ shrl $2, %ecx /* copy by words */
+ rep
+ movsl
+ and $3, %eax /* any bytes left? */
+ jnz .Ltrailing
+ jmp .Lcopy_done
+
+.Ltrailing:
+ cmp $2, %eax
+ jb 1f
+ movw (%esi), %ax
+ movw %ax, (%edi)
+ je .Lcopy_done
+ movb 2(%esi), %al
+ movb %al, 2(%edi)
+ jmp .Lcopy_done
+1: movb (%esi), %al
+ movb %al, (%edi)
+ jmp .Lcopy_done
+
+#if !defined(NO_OVERLAP)
+.Lbackwards:
+ addl %ecx, %edi /* copy backwards. */
+ addl %ecx, %esi
+ and $3, %eax /* any fractional bytes? */
+ jnz .Lback_align
+.Lback_aligned:
+ shrl $2, %ecx
+ subl $4, %esi
+ subl $4, %edi
+ std
+ rep
+ movsl
+ cld
+ jmp .Lcopy_done
+
+.Lback_align:
+ sub %eax, %esi
+ sub %eax, %edi
+ cmp $2, %eax
+ jb 1f
+ je 2f
+ movb 2(%esi), %al
+ movb %al, 2(%edi)
+2: movw (%esi), %ax
+ movw %ax, (%edi)
+ jmp .Lback_aligned
+1: movb (%esi), %al
+ movb %al, (%edi)
+ jmp .Lback_aligned
+#endif
+ /* End of copy kernel */
+.Lcopy_done:
+ cld /* LynxOS depends on it */
+
+ movl 8(%ebp), %esi /* %esi: entry address */
+ movl 36(%ebp), %edi /* %edi: loaded start address */
+
+ /* Prepare jump address */
+ lea (start32a - start)(%edi), %eax
+ movl %eax, (start32r - start)(%edi)
+
+ /* Setup GDT */
+ lea (gdt - start)(%edi), %eax
+ movl %eax, (gdtrr - start)(%edi)
+ lgdt (gdtr - start)(%edi)
+
+ /* Jump to set %cs */
+ ljmp *(start32r - start)(%edi)
+
+ .align 4
+start32a:
+ movl $DATA_SEGMENT, %eax
+ movw %ax, %ds
+ movw %ax, %es
+ movw %ax, %fs
+ movw %ax, %gs
+ movw %ax, %ss
+
+ movl %edx, %esp
+
+ /* Disable Paging in CR0 */
+ movl %cr0, %eax
+ andl $(~CR0_PG), %eax
+ movl %eax, %cr0
+
+ /* Disable PAE in CR4 */
+ movl %cr4, %eax
+ andl $(~CR4_PAE), %eax
+ movl %eax, %cr4
+
+ jmp start32b
Home |
Main Index |
Thread Index |
Old Index