Ported XNU to relocator framework
This commit is contained in:
Vladimir 'phcoder' Serbinenko
commit
48a57559c5
9 changed files with 53 additions and 284 deletions
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@ -155,7 +155,7 @@ efi_fb_mod_LDFLAGS = $(COMMON_LDFLAGS)
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pkglib_MODULES += xnu.mod
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xnu_mod_SOURCES = loader/xnu_resume.c loader/i386/xnu.c loader/i386/efi/xnu.c\
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loader/macho.c loader/xnu.c loader/i386/xnu_helper.S
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loader/macho.c loader/xnu.c
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xnu_mod_CFLAGS = $(COMMON_CFLAGS)
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xnu_mod_LDFLAGS = $(COMMON_LDFLAGS)
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xnu_mod_ASFLAGS = $(COMMON_ASFLAGS)
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@ -188,7 +188,7 @@ linux_mod_LDFLAGS = $(COMMON_LDFLAGS)
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pkglib_MODULES += xnu.mod
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xnu_mod_SOURCES = loader/xnu_resume.c loader/i386/xnu.c loader/i386/pc/xnu.c\
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loader/macho.c loader/xnu.c loader/i386/xnu_helper.S
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loader/macho.c loader/xnu.c
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xnu_mod_CFLAGS = $(COMMON_CFLAGS)
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xnu_mod_LDFLAGS = $(COMMON_LDFLAGS)
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xnu_mod_ASFLAGS = $(COMMON_ASFLAGS)
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@ -161,7 +161,7 @@ efi_fb_mod_LDFLAGS = $(COMMON_LDFLAGS)
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pkglib_MODULES += xnu.mod
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xnu_mod_SOURCES = loader/xnu_resume.c loader/i386/xnu.c loader/i386/efi/xnu.c\
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loader/macho.c loader/xnu.c loader/i386/xnu_helper.S
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loader/macho.c loader/xnu.c
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xnu_mod_CFLAGS = $(COMMON_CFLAGS)
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xnu_mod_LDFLAGS = $(COMMON_LDFLAGS)
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xnu_mod_ASFLAGS = $(COMMON_ASFLAGS)
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@ -20,6 +20,9 @@
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#define GRUB_CPU_XNU_H 1
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#include <grub/err.h>
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#include <grub/cpu/relocator.h>
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#define XNU_RELOCATOR(x) (grub_relocator32_ ## x)
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#define GRUB_XNU_PAGESIZE 4096
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typedef grub_uint32_t grub_xnu_ptr_t;
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@ -75,6 +78,4 @@ grub_err_t grub_xnu_boot (void);
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grub_err_t grub_cpu_xnu_fill_devicetree (void);
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grub_err_t grub_xnu_set_video (struct grub_xnu_boot_params *bootparams_relloc);
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extern grub_uint32_t grub_xnu_heap_will_be_at;
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extern grub_uint8_t grub_xnu_launcher_start[];
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extern grub_uint8_t grub_xnu_launcher_end[];
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#endif
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@ -92,6 +92,7 @@ struct grub_xnu_devtree_key *grub_xnu_create_value (struct grub_xnu_devtree_key
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void grub_xnu_lock (void);
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void grub_xnu_unlock (void);
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grub_err_t grub_xnu_resume (char *imagename);
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grub_err_t grub_xnu_boot_resume (void);
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struct grub_xnu_devtree_key *grub_xnu_find_key (struct grub_xnu_devtree_key *parent,
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char *name);
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grub_err_t grub_xnu_align_heap (int align);
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@ -100,8 +101,7 @@ grub_err_t grub_xnu_scan_dir_for_kexts (char *dirname, char *osbundlerequired,
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grub_err_t grub_xnu_load_kext_from_dir (char *dirname, char *osbundlerequired,
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int maxrecursion);
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void *grub_xnu_heap_malloc (int size);
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extern grub_uint32_t grub_xnu_heap_real_start;
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extern grub_size_t grub_xnu_heap_size;
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extern char *grub_xnu_heap_start;
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extern void *grub_xnu_heap_start;
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extern struct grub_video_bitmap *grub_xnu_bitmap;
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#endif
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@ -30,6 +30,8 @@
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#include <grub/term.h>
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char grub_xnu_cmdline[1024];
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grub_uint32_t grub_xnu_heap_will_be_at;
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grub_uint32_t grub_xnu_entry_point, grub_xnu_arg1, grub_xnu_stack;
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/* Aliases set for some tables. */
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struct tbl_alias
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@ -44,21 +46,6 @@ struct tbl_alias table_aliases[] =
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{GRUB_EFI_ACPI_TABLE_GUID, "ACPI"},
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};
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/* The following function is used to be able to debug xnu loader
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with grub-emu. */
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#ifdef GRUB_UTIL
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static grub_err_t
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grub_xnu_launch (void)
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{
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grub_printf ("Fake launch %x:%p:%p", grub_xnu_entry_point, grub_xnu_arg1,
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grub_xnu_stack);
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grub_getkey ();
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return 0;
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}
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#else
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static void (*grub_xnu_launch) (void) = 0;
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#endif
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static int
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utf16_strlen (grub_uint16_t *in)
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{
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@ -417,6 +404,19 @@ grub_cpu_xnu_fill_devicetree (void)
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return GRUB_ERR_NONE;
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}
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grub_err_t
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grub_xnu_boot_resume (void)
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{
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struct grub_relocator32_state state;
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state.esp = grub_xnu_stack;
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state.eip = grub_xnu_entry_point;
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state.eax = grub_xnu_arg1;
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return grub_relocator32_boot (grub_xnu_heap_start, grub_xnu_heap_will_be_at,
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state);
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}
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/* Boot xnu. */
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grub_err_t
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grub_xnu_boot (void)
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@ -434,6 +434,7 @@ grub_xnu_boot (void)
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void *devtree;
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grub_size_t devtreelen;
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int i;
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struct grub_relocator32_state state;
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/* Page-align to avoid following parts to be inadvertently freed. */
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err = grub_xnu_align_heap (GRUB_XNU_PAGESIZE);
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@ -501,7 +502,8 @@ grub_xnu_boot (void)
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grub_memcpy (bootparams_relloc->cmdline, grub_xnu_cmdline,
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sizeof (bootparams_relloc->cmdline));
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bootparams_relloc->devtree = ((char *) devtree - grub_xnu_heap_start)
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bootparams_relloc->devtree
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= ((grub_uint8_t *) devtree - (grub_uint8_t *) grub_xnu_heap_start)
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+ grub_xnu_heap_will_be_at;
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bootparams_relloc->devtreelen = devtreelen;
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@ -529,12 +531,7 @@ grub_xnu_boot (void)
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grub_xnu_stack = bootparams_relloc->heap_start
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+ bootparams_relloc->heap_size + GRUB_XNU_PAGESIZE;
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grub_xnu_arg1 = bootparams_relloc_off + grub_xnu_heap_will_be_at;
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#ifndef GRUB_UTIL
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grub_xnu_launch = (void (*) (void))
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(grub_xnu_heap_start + grub_xnu_heap_size);
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#endif
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grub_dprintf ("xnu", "eip=%x\n", grub_xnu_entry_point);
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grub_dprintf ("xnu", "launch=%p\n", grub_xnu_launch);
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const char *debug = grub_env_get ("debug");
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@ -560,16 +557,12 @@ grub_xnu_boot (void)
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bootparams_relloc->lfb_base = 0;
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}
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grub_memcpy (grub_xnu_heap_start + grub_xnu_heap_size,
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grub_xnu_launcher_start,
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grub_xnu_launcher_end - grub_xnu_launcher_start);
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if (! grub_autoefi_finish_boot_services ())
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return grub_error (GRUB_ERR_IO, "can't exit boot services");
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grub_xnu_launch ();
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/* Never reaches here. */
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return 0;
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state.eip = grub_xnu_entry_point;
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state.eax = grub_xnu_arg1;
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state.esp = grub_xnu_stack;
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return grub_relocator32_boot (grub_xnu_heap_start, grub_xnu_heap_will_be_at,
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state);
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}
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@ -1,211 +0,0 @@
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/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2009 Free Software Foundation, Inc.
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*
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* GRUB is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* GRUB is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <grub/symbol.h>
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.p2align 4 /* force 16-byte alignment */
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VARIABLE(grub_xnu_launcher_start)
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base:
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cli
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#ifndef __x86_64__
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/* mov imm32, %eax */
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.byte 0xb8
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VARIABLE(grub_xnu_heap_will_be_at)
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.long 0
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mov %eax, %edi
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/* mov imm32, %eax */
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.byte 0xb8
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VARIABLE(grub_xnu_heap_start)
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.long 0
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mov %eax, %esi
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/* mov imm32, %ecx */
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.byte 0xb9
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VARIABLE(grub_xnu_heap_size)
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.long 0
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mov %edi, %eax
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add %ecx, %eax
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/* %rax now contains our starting position after relocation. */
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/* One more page to copy: ourselves. */
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add $0x403, %ecx
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shr $2, %ecx
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/* Forward copy. */
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cld
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rep
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movsl
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mov %eax, %esi
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add $(cont0-base), %eax
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jmp *%eax
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cont0:
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#else
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xorq %rax, %rax
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/* mov imm32, %eax */
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.byte 0xb8
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VARIABLE(grub_xnu_heap_will_be_at)
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.long 0
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mov %rax, %rdi
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/* mov imm32, %rax */
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.byte 0x48
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.byte 0xb8
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VARIABLE(grub_xnu_heap_start)
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.long 0
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.long 0
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mov %rax, %rsi
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/* mov imm32, %rcx */
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.byte 0x48
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.byte 0xb9
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VARIABLE(grub_xnu_heap_size)
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.long 0
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.long 0
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mov %rdi, %rax
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add %rcx, %rax
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/* %rax now contains our starting position after relocation. */
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/* One more page to copy: ourselves. */
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add $0x403, %rcx
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shr $2, %rcx
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/* Forward copy. */
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cld
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rep
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movsl
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mov %rax, %rsi
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#ifdef APPLE_CC
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add $(cont0-base), %eax
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#else
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add $(cont0-base), %rax
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#endif
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jmp *%rax
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cont0:
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#ifdef APPLE_CC
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lea (cont1 - base) (%esi, 1), %eax
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mov %eax, (jump_vector - base) (%esi, 1)
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lea (gdt - base) (%esi, 1), %eax
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mov %eax, (gdt_addr - base) (%esi, 1)
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/* Switch to compatibility mode. */
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lgdt (gdtdesc - base) (%esi, 1)
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/* Update %cs. Thanks to David Miller for pointing this mistake out. */
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ljmp *(jump_vector - base) (%esi,1)
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#else
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lea (cont1 - base) (%rsi, 1), %rax
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mov %eax, (jump_vector - base) (%rsi, 1)
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lea (gdt - base) (%rsi, 1), %rax
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mov %rax, (gdt_addr - base) (%rsi, 1)
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/* Switch to compatibility mode. */
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lgdt (gdtdesc - base) (%rsi, 1)
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/* Update %cs. Thanks to David Miller for pointing this mistake out. */
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ljmp *(jump_vector - base) (%rsi, 1)
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#endif
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cont1:
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.code32
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/* Update other registers. */
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mov $0x18, %eax
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mov %eax, %ds
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mov %eax, %es
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mov %eax, %fs
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mov %eax, %gs
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mov %eax, %ss
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/* Disable paging. */
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mov %cr0, %eax
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and $0x7fffffff, %eax
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mov %eax, %cr0
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/* Disable amd64. */
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mov $0xc0000080, %ecx
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rdmsr
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and $0xfffffeff, %eax
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wrmsr
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/* Turn off PAE. */
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movl %cr4, %eax
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and $0xffffffcf, %eax
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mov %eax, %cr4
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jmp cont2
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cont2:
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#endif
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.code32
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/* Registers on XNU boot: eip, esp and eax. */
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/* mov imm32, %ecx */
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.byte 0xb9
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VARIABLE (grub_xnu_entry_point)
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.long 0
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/* mov imm32, %eax */
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.byte 0xb8
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VARIABLE (grub_xnu_arg1)
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.long 0
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/* mov imm32, %ebx */
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.byte 0xbb
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VARIABLE (grub_xnu_stack)
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.long 0
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movl %ebx, %esp
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jmp *%ecx
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#ifdef __x86_64__
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/* GDT. Copied from loader/i386/linux.c. */
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.p2align 4
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gdt:
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/* NULL. */
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.byte 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
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/* Reserved. */
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.byte 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
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/* Code segment. */
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.byte 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x9A, 0xCF, 0x00
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/* Data segment. */
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.byte 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x92, 0xCF, 0x00
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gdtdesc:
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.word 31
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gdt_addr:
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/* Filled by the code. */
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.quad 0
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.p2align 4
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jump_vector:
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/* Jump location. Is filled by the code */
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.long 0
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.long 0x10
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#endif
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VARIABLE(grub_xnu_launcher_end)
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39
loader/xnu.c
39
loader/xnu.c
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@ -36,6 +36,9 @@ struct grub_xnu_devtree_key *grub_xnu_devtree_root = 0;
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static int driverspackagenum = 0;
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static int driversnum = 0;
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void *grub_xnu_heap_start = 0;
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grub_size_t grub_xnu_heap_size = 0;
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/* Allocate heap by 32MB-blocks. */
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#define GRUB_XNU_HEAP_ALLOC_BLOCK 0x2000000
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@ -46,12 +49,6 @@ void *
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grub_xnu_heap_malloc (int size)
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{
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void *val;
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#if 0
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/* This way booting is faster but less reliable.
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Once we have advanced mm second way will be as fast as this one. */
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val = grub_xnu_heap_start = (char *) 0x100000;
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#else
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int oldblknum, newblknum;
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/* The page after the heap is used for stack. Ensure it's usable. */
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@ -63,25 +60,21 @@ grub_xnu_heap_malloc (int size)
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newblknum = (grub_xnu_heap_size + size + GRUB_XNU_PAGESIZE
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+ GRUB_XNU_HEAP_ALLOC_BLOCK - 1) / GRUB_XNU_HEAP_ALLOC_BLOCK;
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if (oldblknum != newblknum)
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{
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/* FIXME: instruct realloc to allocate at 1MB if possible once
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advanced mm is ready. */
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val = grub_realloc (grub_xnu_heap_start,
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newblknum * GRUB_XNU_HEAP_ALLOC_BLOCK);
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else
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val = grub_xnu_heap_start;
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if (! val)
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{
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grub_error (GRUB_ERR_OUT_OF_MEMORY,
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"not enough space on xnu memory heap");
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return 0;
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grub_xnu_heap_start
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= XNU_RELOCATOR (realloc) (grub_xnu_heap_start,
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newblknum
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* GRUB_XNU_HEAP_ALLOC_BLOCK);
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if (!grub_xnu_heap_start)
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return NULL;
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}
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grub_xnu_heap_start = val;
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#endif
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val = (char *) grub_xnu_heap_start + grub_xnu_heap_size;
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val = (grub_uint8_t *) grub_xnu_heap_start + grub_xnu_heap_size;
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grub_xnu_heap_size += size;
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grub_dprintf ("xnu", "val=%p\n", val);
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return (char *) val;
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return val;
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}
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/* Make sure next block of the heap will be aligned.
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@ -251,7 +244,7 @@ grub_xnu_writetree_toheap (void **start, grub_size_t *size)
|
|||
- *size % GRUB_XNU_PAGESIZE);
|
||||
|
||||
/* Put real data in the dummy. */
|
||||
extdesc->addr = (char *) *start - grub_xnu_heap_start
|
||||
extdesc->addr = (grub_uint8_t *) *start - (grub_uint8_t *) grub_xnu_heap_start
|
||||
+ grub_xnu_heap_will_be_at;
|
||||
extdesc->size = (grub_uint32_t) *size;
|
||||
|
||||
|
|
@ -503,7 +496,7 @@ grub_xnu_load_driver (char *infoplistname, grub_file_t binaryfile)
|
|||
grub_file_t infoplist;
|
||||
struct grub_xnu_extheader *exthead;
|
||||
int neededspace = sizeof (*exthead);
|
||||
char *buf;
|
||||
grub_uint8_t *buf;
|
||||
grub_size_t infoplistsize = 0, machosize = 0;
|
||||
|
||||
if (! grub_xnu_heap_size)
|
||||
|
|
@ -552,7 +545,7 @@ grub_xnu_load_driver (char *infoplistname, grub_file_t binaryfile)
|
|||
/* Load the binary. */
|
||||
if (macho)
|
||||
{
|
||||
exthead->binaryaddr = (buf - grub_xnu_heap_start)
|
||||
exthead->binaryaddr = (buf - (grub_uint8_t *) grub_xnu_heap_start)
|
||||
+ grub_xnu_heap_will_be_at;
|
||||
exthead->binarysize = machosize;
|
||||
if ((err = grub_macho32_readfile (macho, buf)))
|
||||
|
|
@ -568,7 +561,7 @@ grub_xnu_load_driver (char *infoplistname, grub_file_t binaryfile)
|
|||
/* Load the plist. */
|
||||
if (infoplist)
|
||||
{
|
||||
exthead->infoplistaddr = (buf - grub_xnu_heap_start)
|
||||
exthead->infoplistaddr = (buf - (grub_uint8_t *) grub_xnu_heap_start)
|
||||
+ grub_xnu_heap_will_be_at;
|
||||
exthead->infoplistsize = infoplistsize + 1;
|
||||
if (grub_file_read (infoplist, buf, infoplistsize)
|
||||
|
|
|
|||
|
|
@ -45,7 +45,7 @@ grub_xnu_resume (char *imagename)
|
|||
grub_file_t file;
|
||||
grub_size_t total_header_size;
|
||||
struct grub_xnu_hibernate_header hibhead;
|
||||
char *buf, *codetmp;
|
||||
grub_uint8_t *buf;
|
||||
|
||||
grub_uint32_t codedest;
|
||||
grub_uint32_t codesize;
|
||||
|
|
@ -94,12 +94,11 @@ grub_xnu_resume (char *imagename)
|
|||
/* Try to allocate necessary space.
|
||||
FIXME: mm isn't good enough yet to handle huge allocations.
|
||||
*/
|
||||
grub_xnu_hibernate_image = buf = grub_malloc (hibhead.image_size);
|
||||
grub_xnu_hibernate_image = buf = XNU_RELOCATOR (alloc) (hibhead.image_size);
|
||||
if (! buf)
|
||||
{
|
||||
grub_file_close (file);
|
||||
return grub_error (GRUB_ERR_OUT_OF_MEMORY,
|
||||
"not enough memory to load image");
|
||||
return grub_errno;
|
||||
}
|
||||
|
||||
/* Read image. */
|
||||
|
|
@ -112,22 +111,16 @@ grub_xnu_resume (char *imagename)
|
|||
}
|
||||
grub_file_close (file);
|
||||
|
||||
codetmp = grub_memalign (GRUB_XNU_PAGESIZE, codesize + GRUB_XNU_PAGESIZE);
|
||||
/* Setup variables needed by asm helper. */
|
||||
grub_xnu_heap_will_be_at = codedest;
|
||||
grub_xnu_heap_start = codetmp;
|
||||
grub_xnu_heap_start = buf;
|
||||
grub_xnu_heap_size = codesize;
|
||||
grub_xnu_stack = (codedest + hibhead.stack);
|
||||
grub_xnu_entry_point = (codedest + hibhead.entry_point);
|
||||
grub_xnu_arg1 = (long) buf;
|
||||
|
||||
/* Prepare asm helper. */
|
||||
grub_memcpy (codetmp, ((grub_uint8_t *) buf) + total_header_size, codesize);
|
||||
grub_memcpy (codetmp + codesize, grub_xnu_launcher_start,
|
||||
grub_xnu_launcher_end - grub_xnu_launcher_start);
|
||||
|
||||
/* We're ready now. */
|
||||
grub_loader_set ((grub_err_t (*) (void)) (codetmp + codesize),
|
||||
grub_loader_set (grub_xnu_boot_resume,
|
||||
grub_xnu_resume_unload, 0);
|
||||
|
||||
/* Prevent module from unloading. */
|
||||
|
|
|
|||
Loading…
Reference in a new issue