2009-05-02 Vladimir Serbinenko <phcoder@gmail.com>
Mmap services * loader/i386/efi/linux.c (grub_linux_boot): use grub_mmap_iterate * loader/i386/linux.c (find_mmap_size): likewise (allocate_pages): likewise * loader/i386/multiboot.c (grub_get_multiboot_mmap_len): likewise (grub_fill_multiboot_mmap): likewise (grub_multiboot): use grub_mmap_get_lower and grub_mmap_get_upper * loader/i386/pc/linux.c (grub_cmd_linux): use grub_mmap_get_lower * include/grub/i386/bsd.h (OPENBSD_MMAP_AVAILABLE): new definition (OPENBSD_MMAP_RESERVED): likewise * include/grub/i386/pc/memory.h: include grub/memory.h (grub_lower_mem): removed (grub_upper_mem): likewise (GRUB_MACHINE_MEMORY_ACPI): new definition (GRUB_MACHINE_MEMORY_NVS): likewise (GRUB_MACHINE_MEMORY_MAX_TYPE): likewise (GRUB_MACHINE_MEMORY_HOLE): likewise (grub_machine_mmap_register): likewise (grub_machine_mmap_unregister): likewise (grub_machine_get_upper): likewise (grub_machine_get_lower): likewise (grub_machine_get_post64): likewise * include/grub/i386/efi/memory.h: new file * include/grub/x86_64/efi/memory.h: likewise * include/grub/efi/memory.h: likewise * conf/i386-pc.rmk (pkglib_MODULES): added mmap.mod (mmap_mod_SOURCES): new variable (mmap_mod_LDFLAGS): likewise (mmap_mod_ASFLAGS): likewise * conf/i386-coreboot.rmk: likewise * conf/i386-ieee1275.rmk: likewise * conf/i386-efi.rmk: likewise * conf/x86_64-efi.rmk: likewise * include/grub/types.h (UINT_TO_PTR): new macro (PTR_TO_UINT32): likewise (PTR_TO_UINT64): likewise * include/grub/memory.h: new file * mmap/i386/pc/mmap.c: likewise * mmap/i386/pc/mmap_helper.S: likewise * mmap/i386/uppermem.c: likewise * mmap/mmap.c: likewise * mmap/efi/mmap.c: likewise * kern/i386/coreboot/init.c (grub_machine_init): don't use grub_upper_mem * kern/i386/pc/init.c (grub_lower_mem): removed variable (grub_upper_mem): likewise (grub_machine_init): don't use grub_upper_mem, make grub_lower_mem local * loader/i386/bsd.c (grub_openbsd_boot): use grub_mmap_get_lower, grub_mmap_iterate and grub_mmap_get_upper (grub_netbsd_boot): use grub_mmap_get_lower and grub_mmap_get_upper
This commit is contained in:
phcoder
parent
d558e6b5ac
commit
09d842b9c6
27 changed files with 1579 additions and 128 deletions
98
mmap/i386/mmap.c
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98
mmap/i386/mmap.c
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@ -0,0 +1,98 @@
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/* Mmap management. */
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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/machine/memory.h>
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#include <grub/memory.h>
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#include <grub/err.h>
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#include <grub/misc.h>
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#include <grub/mm.h>
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#ifndef GRUB_MMAP_REGISTER_BY_FIRMWARE
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char *
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grub_mmap_malign_and_register (grub_uint64_t align, grub_uint64_t size,
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int *handle, int type, int flags)
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{
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grub_uint64_t highestlow = 0;
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auto int NESTED_FUNC_ATTR find_hook (grub_uint64_t, grub_uint64_t,
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grub_uint32_t);
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int NESTED_FUNC_ATTR find_hook (grub_uint64_t start, grub_uint64_t rangesize,
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grub_uint32_t memtype)
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{
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grub_uint64_t end = start + rangesize;
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if (memtype != GRUB_MACHINE_MEMORY_AVAILABLE)
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return 0;
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if (end > 0x100000)
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end = 0x100000;
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if (end > start + size
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&& highestlow < ((end - size) - ((end - size) & (align - 1))))
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highestlow = (end - size) - ((end - size) & (align - 1));
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return 0;
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}
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char * ret;
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if (flags & GRUB_MMAP_MALLOC_LOW)
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{
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/* FIXME: use low-memory mm allocation once it's available. */
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grub_mmap_iterate (find_hook);
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ret = UINT_TO_PTR (highestlow);
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}
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else
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ret = grub_memalign (align, size);
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if (! ret)
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{
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*handle = 0;
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return 0;
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}
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*handle = grub_mmap_register (PTR_TO_UINT64 (ret), size, type);
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if (! *handle)
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{
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grub_free (ret);
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return 0;
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}
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return ret;
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}
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void
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grub_mmap_free_and_unregister (int handle)
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{
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struct grub_mmap_region *cur;
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grub_uint64_t addr;
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for (cur = grub_mmap_overlays; cur; cur = cur->next)
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if (cur->handle == handle)
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break;
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if (! cur)
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return;
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addr = cur->start;
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grub_mmap_unregister (handle);
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if (addr >= 0x100000)
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grub_free (UINT_TO_PTR (addr));
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}
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#endif
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216
mmap/i386/pc/mmap.c
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216
mmap/i386/pc/mmap.c
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/* Mmap management. */
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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/machine/memory.h>
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#include <grub/memory.h>
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#include <grub/misc.h>
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#include <grub/term.h>
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#include <grub/loader.h>
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#define min(a,b) (((a) < (b)) ? (a) : (b))
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static void *hooktarget = 0;
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extern grub_uint8_t grub_machine_mmaphook_start;
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extern grub_uint8_t grub_machine_mmaphook_end;
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extern grub_uint8_t grub_machine_mmaphook_int12;
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extern grub_uint8_t grub_machine_mmaphook_int15;
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static grub_uint16_t grub_machine_mmaphook_int12offset = 0;
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static grub_uint16_t grub_machine_mmaphook_int12segment = 0;
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extern grub_uint16_t grub_machine_mmaphook_int15offset;
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extern grub_uint16_t grub_machine_mmaphook_int15segment;
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extern grub_uint16_t grub_machine_mmaphook_mmap_num;
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extern grub_uint16_t grub_machine_mmaphook_kblow;
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extern grub_uint16_t grub_machine_mmaphook_kbin16mb;
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extern grub_uint16_t grub_machine_mmaphook_64kbin4gb;
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struct grub_e820_mmap_entry
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{
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grub_uint64_t addr;
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grub_uint64_t len;
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grub_uint32_t type;
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} __attribute__((packed));
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static grub_err_t
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preboot (int noreturn __attribute__ ((unused)))
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{
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struct grub_e820_mmap_entry *hookmmap, *hookmmapcur;
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auto int NESTED_FUNC_ATTR fill_hook (grub_uint64_t, grub_uint64_t,
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grub_uint32_t);
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int NESTED_FUNC_ATTR fill_hook (grub_uint64_t addr, grub_uint64_t size,
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grub_uint32_t type)
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{
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grub_dprintf ("mmap", "mmap chunk %llx-%llx:%x\n", addr, addr + size, type);
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hookmmapcur->addr = addr;
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hookmmapcur->len = size;
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hookmmapcur->type = type;
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hookmmapcur++;
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return 0;
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}
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if (! hooktarget)
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return grub_error (GRUB_ERR_OUT_OF_MEMORY,
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"no space is allocated for memory hook");
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grub_dprintf ("mmap", "installing preboot handlers\n");
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hookmmapcur = hookmmap = (struct grub_e820_mmap_entry *)
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((grub_uint8_t *) hooktarget + (&grub_machine_mmaphook_end
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- &grub_machine_mmaphook_start));
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grub_mmap_iterate (fill_hook);
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grub_machine_mmaphook_mmap_num = hookmmapcur - hookmmap;
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grub_machine_mmaphook_kblow = grub_mmap_get_lower () >> 10;
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grub_machine_mmaphook_kbin16mb
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= min (grub_mmap_get_upper (),0x3f00000ULL) >> 10;
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grub_machine_mmaphook_64kbin4gb
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= min (grub_mmap_get_post64 (), 0xfc000000ULL) >> 16;
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/* Correct BDA. */
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*((grub_uint16_t *) 0x413) = grub_mmap_get_lower () >> 10;
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/* Save old interrupt handlers. */
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grub_machine_mmaphook_int12offset = *((grub_uint16_t *) 0x48);
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grub_machine_mmaphook_int12segment = *((grub_uint16_t *) 0x4a);
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grub_machine_mmaphook_int15offset = *((grub_uint16_t *) 0x54);
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grub_machine_mmaphook_int15segment = *((grub_uint16_t *) 0x56);
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grub_dprintf ("mmap", "hooktarget = %p\n", hooktarget);
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/* Install the interrupt handlers. */
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grub_memcpy (hooktarget, &grub_machine_mmaphook_start,
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&grub_machine_mmaphook_end - &grub_machine_mmaphook_start);
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*((grub_uint16_t *) 0x4a) = PTR_TO_UINT32 (hooktarget) >> 4;
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*((grub_uint16_t *) 0x56) = PTR_TO_UINT32 (hooktarget) >> 4;
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*((grub_uint16_t *) 0x48) = &grub_machine_mmaphook_int12
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- &grub_machine_mmaphook_start;
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*((grub_uint16_t *) 0x54) = &grub_machine_mmaphook_int15
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- &grub_machine_mmaphook_start;
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return GRUB_ERR_NONE;
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}
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static grub_err_t
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preboot_rest (void)
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{
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/* Restore old interrupt handlers. */
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*((grub_uint16_t *) 0x48) = grub_machine_mmaphook_int12offset;
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*((grub_uint16_t *) 0x4a) = grub_machine_mmaphook_int12segment;
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*((grub_uint16_t *) 0x54) = grub_machine_mmaphook_int15offset;
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*((grub_uint16_t *) 0x56) = grub_machine_mmaphook_int15segment;
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return GRUB_ERR_NONE;
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}
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static grub_err_t
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malloc_hook (void)
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{
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static int reentry = 0;
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static int mmapregion = 0;
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static int slots_available = 0;
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int hooksize;
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int regcount = 0;
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auto int NESTED_FUNC_ATTR count_hook (grub_uint64_t, grub_uint64_t,
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grub_uint32_t);
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int NESTED_FUNC_ATTR count_hook (grub_uint64_t addr __attribute__ ((unused)),
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grub_uint64_t size __attribute__ ((unused)),
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grub_uint32_t type __attribute__ ((unused)))
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{
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regcount++;
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return 0;
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}
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if (reentry)
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return GRUB_ERR_NONE;
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grub_dprintf ("mmap", "registering\n");
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grub_mmap_iterate (count_hook);
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/* Mapping hook itself may introduce up to 2 additional regions. */
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regcount += 2;
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if (regcount <= slots_available)
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return GRUB_ERR_NONE;
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if (mmapregion)
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{
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grub_mmap_free_and_unregister (mmapregion);
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mmapregion = 0;
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hooktarget = 0;
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}
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hooksize = &grub_machine_mmaphook_end - &grub_machine_mmaphook_start
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+ regcount * sizeof (struct grub_e820_mmap_entry);
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/* Allocate an integer number of KiB. */
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hooksize = ((hooksize - 1) | 0x3ff) + 1;
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slots_available = (hooksize - (&grub_machine_mmaphook_end
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- &grub_machine_mmaphook_start))
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/ sizeof (struct grub_e820_mmap_entry);
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reentry = 1;
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hooktarget
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= grub_mmap_malign_and_register (16, hooksize, &mmapregion,
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GRUB_MACHINE_MEMORY_RESERVED,
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GRUB_MMAP_MALLOC_LOW);
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reentry = 0;
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if (! hooktarget)
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{
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slots_available = 0;
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return grub_error (GRUB_ERR_OUT_OF_MEMORY, "No space for mmap hook");
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}
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return GRUB_ERR_NONE;
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}
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grub_err_t
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grub_machine_mmap_register (grub_uint64_t start __attribute__ ((unused)),
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grub_uint64_t size __attribute__ ((unused)),
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int type __attribute__ ((unused)),
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int handle __attribute__ ((unused)))
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{
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grub_err_t err;
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static void *preb_handle = 0;
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err = malloc_hook ();
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if (err)
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return err;
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if (! preb_handle)
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{
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grub_dprintf ("mmap", "adding preboot\n");
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preb_handle
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= grub_loader_register_preboot_hook (preboot, preboot_rest,
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GRUB_LOADER_PREBOOT_HOOK_PRIO_MEMORY);
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if (! preb_handle)
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return grub_errno;
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}
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return GRUB_ERR_NONE;
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}
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grub_err_t
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grub_machine_mmap_unregister (int handle __attribute__ ((unused)))
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{
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return GRUB_ERR_NONE;
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}
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122
mmap/i386/pc/mmap_helper.S
Normal file
122
mmap/i386/pc/mmap_helper.S
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/* Mmap management. */
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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
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation, either version 3 of the License, or
|
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* (at your option) any later version.
|
||||
*
|
||||
* GRUB is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* 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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#define DS(x) ((x) - segstart)
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segstart:
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VARIABLE(grub_machine_mmaphook_start)
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.code16
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VARIABLE(grub_machine_mmaphook_int12)
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push %ds
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push %cs
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pop %ds
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movw DS (EXT_C (grub_machine_mmaphook_kblow)), %ax
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pop %ds
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iret
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VARIABLE(grub_machine_mmaphook_int15)
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pushf
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cmpw $0xe801, %ax
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jz e801
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cmpw $0xe820, %ax
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jz e820
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cmpb $0x88, %ah
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jz h88
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popf
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/* ljmp */
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.byte 0xea
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VARIABLE (grub_machine_mmaphook_int15offset)
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.word 0
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VARIABLE (grub_machine_mmaphook_int15segment)
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.word 0
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e801:
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popf
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push %ds
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push %cs
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pop %ds
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movw DS (EXT_C (grub_machine_mmaphook_kbin16mb)), %ax
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movw DS (EXT_C (grub_machine_mmaphook_64kbin4gb)), %bx
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movw %ax, %cx
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movw %bx, %dx
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pop %ds
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clc
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iret
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h88:
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popf
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push %ds
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push %cs
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pop %ds
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movw DS (EXT_C (grub_machine_mmaphook_kbin16mb)), %ax
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pop %ds
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clc
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iret
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e820:
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popf
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push %ds
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push %cs
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pop %ds
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cmpw $20, %cx
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jb errexit
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cmpw DS (EXT_C (grub_machine_mmaphook_mmap_num)), %bx
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jae errexit
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cmp $0x534d4150, %edx
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jne errexit
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push %si
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push %di
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movw $20, %cx
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movw $(DS(mmaphook_mmap)), %si
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mov %bx, %ax
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imul $20, %ax
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add %ax, %si
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rep movsb
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pop %di
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pop %si
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movl $20, %ecx
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inc %bx
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cmpw DS(EXT_C(grub_machine_mmaphook_mmap_num)), %bx
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jb noclean
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xor %bx, %bx
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||||
noclean:
|
||||
mov $0x534d4150, %eax
|
||||
pop %ds
|
||||
clc
|
||||
iret
|
||||
errexit:
|
||||
mov $0x534d4150, %eax
|
||||
pop %ds
|
||||
stc
|
||||
xor %bx, %bx
|
||||
iret
|
||||
|
||||
VARIABLE(grub_machine_mmaphook_mmap_num)
|
||||
.word 0
|
||||
VARIABLE(grub_machine_mmaphook_kblow)
|
||||
.word 0
|
||||
VARIABLE (grub_machine_mmaphook_kbin16mb)
|
||||
.word 0
|
||||
VARIABLE (grub_machine_mmaphook_64kbin4gb)
|
||||
.word 0
|
||||
mmaphook_mmap:
|
||||
/* Memory map is placed just after the interrupt handlers. */
|
||||
VARIABLE(grub_machine_mmaphook_end)
|
||||
85
mmap/i386/uppermem.c
Normal file
85
mmap/i386/uppermem.c
Normal file
|
|
@ -0,0 +1,85 @@
|
|||
/* Compute amount of lower and upper memory till the first hole. */
|
||||
/*
|
||||
* GRUB -- GRand Unified Bootloader
|
||||
* Copyright (C) 2009 Free Software Foundation, Inc.
|
||||
*
|
||||
* GRUB is free software: you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation, either version 3 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* GRUB is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
|
||||
#include <grub/memory.h>
|
||||
#include <grub/mm.h>
|
||||
#include <grub/misc.h>
|
||||
|
||||
grub_uint64_t
|
||||
grub_mmap_get_lower (void)
|
||||
{
|
||||
grub_uint64_t lower = 0;
|
||||
|
||||
auto int NESTED_FUNC_ATTR hook (grub_uint64_t, grub_uint64_t, grub_uint32_t);
|
||||
int NESTED_FUNC_ATTR hook (grub_uint64_t addr, grub_uint64_t size,
|
||||
grub_uint32_t type)
|
||||
{
|
||||
if (type != GRUB_MACHINE_MEMORY_AVAILABLE)
|
||||
return 0;
|
||||
if (addr == 0)
|
||||
lower = size;
|
||||
return 0;
|
||||
}
|
||||
|
||||
grub_mmap_iterate (hook);
|
||||
if (lower > 0x100000)
|
||||
lower = 0x100000;
|
||||
return lower;
|
||||
}
|
||||
|
||||
grub_uint64_t
|
||||
grub_mmap_get_upper (void)
|
||||
{
|
||||
grub_uint64_t upper = 0;
|
||||
|
||||
auto int NESTED_FUNC_ATTR hook (grub_uint64_t, grub_uint64_t, grub_uint32_t);
|
||||
int NESTED_FUNC_ATTR hook (grub_uint64_t addr, grub_uint64_t size,
|
||||
grub_uint32_t type)
|
||||
{
|
||||
if (type != GRUB_MACHINE_MEMORY_AVAILABLE)
|
||||
return 0;
|
||||
if (addr <= 0x100000 && addr + size > 0x100000)
|
||||
upper = addr + size - 0x100000;
|
||||
return 0;
|
||||
}
|
||||
|
||||
grub_mmap_iterate (hook);
|
||||
return upper;
|
||||
}
|
||||
|
||||
/* Count the continous bytes after 64 MiB. */
|
||||
grub_uint64_t
|
||||
grub_mmap_get_post64 (void)
|
||||
{
|
||||
grub_uint64_t post64 = 0;
|
||||
|
||||
auto int NESTED_FUNC_ATTR hook (grub_uint64_t, grub_uint64_t, grub_uint32_t);
|
||||
int NESTED_FUNC_ATTR hook (grub_uint64_t addr, grub_uint64_t size,
|
||||
grub_uint32_t type)
|
||||
{
|
||||
if (type != GRUB_MACHINE_MEMORY_AVAILABLE)
|
||||
return 0;
|
||||
if (addr <= 0x4000000 && addr + size > 0x4000000)
|
||||
post64 = addr + size - 0x4000000;
|
||||
return 0;
|
||||
}
|
||||
|
||||
grub_mmap_iterate (hook);
|
||||
return post64;
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue