Source-Changes-HG archive
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Old Index]
[src/bouyer-socketcan]: src/sys/arch/i386/stand/efiboot 1673251
details: https://anonhg.NetBSD.org/src/rev/3dc5d5ed3ad4
branches: bouyer-socketcan
changeset: 820836:3dc5d5ed3ad4
user: nonaka <nonaka%NetBSD.org@localhost>
date: Sat Feb 11 10:23:40 2017 +0000
description:
1673251
diffstat:
sys/arch/i386/stand/efiboot/bootx64/efibootx64.c | 78 ++++++
sys/arch/i386/stand/efiboot/bootx64/startprog64.S | 264 ++++++++++++++++++++++
sys/arch/i386/stand/efiboot/efiboot.c | 152 ++++++++++++
sys/arch/i386/stand/efiboot/efiboot.h | 71 +++++
4 files changed, 565 insertions(+), 0 deletions(-)
diffs (truncated from 581 to 300 lines):
diff -r 584d270335b3 -r 3dc5d5ed3ad4 sys/arch/i386/stand/efiboot/bootx64/efibootx64.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/arch/i386/stand/efiboot/bootx64/efibootx64.c Sat Feb 11 10:23:40 2017 +0000
@@ -0,0 +1,78 @@
+/* $NetBSD: efibootx64.c,v 1.2.6.2 2017/02/11 10:23:40 nonaka Exp $ */
+
+/*-
+ * Copyright (c) 2016 Kimihiro Nonaka <nonaka%netbsd.org@localhost>
+ * 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 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.
+ */
+
+#include "efiboot.h"
+
+#include <sys/bootblock.h>
+
+struct x86_boot_params boot_params;
+
+void startprog64_start(physaddr_t, physaddr_t, physaddr_t, u_long,
+ void *, physaddr_t);
+extern void (*startprog64)(physaddr_t, physaddr_t, physaddr_t, u_long,
+ void *, physaddr_t);
+extern u_int startprog64_size;
+
+void
+efi_md_init(void)
+{
+ EFI_STATUS status;
+ EFI_PHYSICAL_ADDRESS addr = EFI_ALLOCATE_MAX_ADDRESS;
+ u_int sz = EFI_SIZE_TO_PAGES(startprog64_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);
+ startprog64 = (void *)addr;
+ CopyMem(startprog64, startprog64_start, startprog64_size);
+}
+
+/* ARGSUSED */
+void
+startprog(physaddr_t entry, uint32_t argc, uint32_t *argv, physaddr_t sp)
+{
+ uint32_t *newsp = (void *)((char *)startprog64 + startprog64_size);
+
+ /* Copy argv to new stack pointer */
+ if (argc > 0) {
+ newsp -= argc;
+ memcpy(newsp, argv, sizeof(*argv) * argc);
+ }
+
+ (*startprog64)(efi_kernel_start, efi_kernel_start + efi_loadaddr,
+ (physaddr_t)newsp, efi_kernel_size, startprog64, entry);
+}
+
+/* ARGSUSED */
+void
+multiboot(physaddr_t entry, physaddr_t header, physaddr_t sp)
+{
+ Panic(L"%a: not implemented", __func__);
+}
diff -r 584d270335b3 -r 3dc5d5ed3ad4 sys/arch/i386/stand/efiboot/bootx64/startprog64.S
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/arch/i386/stand/efiboot/bootx64/startprog64.S Sat Feb 11 10:23:40 2017 +0000
@@ -0,0 +1,264 @@
+/* $NetBSD: startprog64.S,v 1.3.6.2 2017/02/11 10:23:40 nonaka Exp $ */
+/* NetBSD: startprog.S,v 1.3 2003/02/01 14:48:18 dsl Exp */
+
+/* starts program in protected mode / flat space
+ with given stackframe
+ needs global variables flatcodeseg and flatdataseg
+ (gdt offsets)
+ derived from: NetBSD:sys/arch/i386/boot/asm.S
+ */
+
+/*
+ * 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(startprog64)
+_C_LABEL(startprog64):
+ .quad 0
+
+ .globl _C_LABEL(startprog64_size)
+_C_LABEL(startprog64_size):
+ .long startprog64_end - _C_LABEL(startprog64_start)
+
+ .text
+ .p2align 4,,15
+
+/*
+ * startprog64(loadddr,entry,stack,kern_load,kern_start,kern_size)
+ */
+ENTRY(startprog64_start)
+start:
+ /*
+ * This function is to call the loaded kernel's start() with
+ * 32bit segment mode from x64 mode.
+ * %rdi: kernel start address
+ * %rsi: loaded kernel address
+ * %rdx: stack address
+ * %rcx: loaded kernel size
+ * %r8 : loaded start address
+ * %r9 : kernel entry address
+ */
+
+ cld /* LynxOS depends on it */
+
+ cli
+
+ /* Copy kernel */
+ mov %rcx, %r12 /* original kernel size */
+ movq %rdi, %r11 /* for misaligned check */
+
+#if !defined(NO_OVERLAP)
+ movq %rdi, %r13
+ subq %rsi, %r13
+#endif
+
+ shrq $3, %rcx /* count for copy by words */
+ jz 8f /* j if less than 8 bytes */
+
+ lea -8(%rdi, %r12), %r14 /* target address of last 8 */
+ mov -8(%rsi, %r12), %r15 /* get last word */
+#if !defined(NO_OVERLAP)
+ cmpq %r12, %r13 /* overlapping? */
+ jb 10f
+#endif
+
+/*
+ * Non-overlaping, copy forwards.
+ * Newer Intel cpus (Nehalem) will do 16byte read/write transfers
+ * if %ecx is more than 76.
+ * AMD might do something similar some day.
+ */
+ and $7, %r11 /* destination misaligned ? */
+ jnz 2f
+ rep
+ movsq
+ mov %r15, (%r14) /* write last word */
+ jmp .Lcopy_done
+
+/*
+ * Destination misaligned
+ * AMD say it is better to align the destination (not the source).
+ * This will also re-align copies if the source and dest are both
+ * misaligned by the same amount)
+ * (I think Nehalem will use its accelerated copy if the source
+ * and destination have the same alignment.)
+ */
+2:
+ lea -9(%r11, %r12), %rcx /* post re-alignment count */
+ neg %r11 /* now -1 .. -7 */
+ mov (%rsi), %r12 /* get first word */
+ mov %rdi, %r13 /* target for first word */
+ lea 8(%rsi, %r11), %rsi
+ lea 8(%rdi, %r11), %rdi
+ shr $3, %rcx
+ rep
+ movsq
+ mov %r12, (%r13) /* write first word */
+ mov %r15, (%r14) /* write last word */
+ jmp .Lcopy_done
+
+#if !defined(NO_OVERLAP)
+/* Must copy backwards.
+ * Reverse copy is probably easy to code faster than 'rep movds'
+ * since that requires (IIRC) an extra clock every 3 iterations (AMD).
+ * However I don't suppose anything cares that much!
+ * The big cost is the std/cld pair - reputedly 50+ cycles on Netburst P4.
+ * The copy is aligned with the buffer start (more likely to
+ * be a multiple of 8 than the end).
+ */
+10:
+ lea -8(%rsi, %rcx, 8), %rsi
+ lea -8(%rdi, %rcx, 8), %rdi
+ std
+ rep
+ movsq
+ cld
+ mov %r15, (%r14) /* write last bytes */
+ jmp .Lcopy_done
+#endif
+
+/* Less than 8 bytes to copy, copy by bytes */
+/* Intel Nehalem optimise 'rep movsb' for <= 7 bytes (9-15 clocks).
+ * For longer transfers it is 50+ !
+ */
+8: mov %r12, %rcx
+
+#if !defined(NO_OVERLAP)
+ cmpq %r12, %r13 /* overlapping? */
+ jb 81f
+#endif
+
+ /* nope, copy forwards. */
+ rep
+ movsb
+ jmp .Lcopy_done
+
+#if !defined(NO_OVERLAP)
+/* Must copy backwards */
+81:
+ lea -1(%rsi, %rcx), %rsi
+ lea -1(%rdi, %rcx), %rdi
+ std
+ rep
+ movsb
+ cld
+#endif
+ /* End of copy kernel */
+.Lcopy_done:
+
+ mov %r8, %rdi /* %rdi: loaded start address */
+ mov %r9, %rsi /* %rsi: kernel entry address */
+
+ /* Prepare jump address */
+ lea (start32a - start)(%rdi), %rax
+ movl %eax, (start32r - start)(%rdi)
+
+ /* Setup GDT */
+ lea (gdt - start)(%rdi), %rax
+ mov %rax, (gdtrr - start)(%rdi)
+ lgdt (gdtr - start)(%rdi)
+
Home |
Main Index |
Thread Index |
Old Index