#grub_install_SOURCES = util/efi/pc/grub-install.in
# Modules.
-pkgdata_MODULES = kernel.mod normal.mod _chain.mod chain.mod
+pkgdata_MODULES = kernel.mod normal.mod _chain.mod chain.mod \
+ _linux.mod linux.mod
# For kernel.mod.
kernel_mod_EXPORTS = no
chain_mod_CFLAGS = $(COMMON_CFLAGS)
chain_mod_LDFLAGS = $(COMMON_LDFLAGS)
+# For _linux.mod.
+_linux_mod_SOURCES = loader/i386/efi/linux.c
+CLEANFILES += _linux.mod mod-_linux.o mod-_linux.c pre-_linux.o _linux_mod-loader_i386_efi_linux.o und-_linux.lst
+ifneq ($(_linux_mod_EXPORTS),no)
+CLEANFILES += def-_linux.lst
+DEFSYMFILES += def-_linux.lst
+endif
+MOSTLYCLEANFILES += _linux_mod-loader_i386_efi_linux.d
+UNDSYMFILES += und-_linux.lst
+
+_linux.mod: pre-_linux.o mod-_linux.o
+ -rm -f $@
+ $(CC) $(_linux_mod_LDFLAGS) $(LDFLAGS) -Wl,-r,-d -o $@ $^
+ $(STRIP) --strip-unneeded -K grub_mod_init -K grub_mod_fini -R .note -R .comment $@
+
+pre-_linux.o: _linux_mod-loader_i386_efi_linux.o
+ -rm -f $@
+ $(CC) $(_linux_mod_LDFLAGS) $(LDFLAGS) -Wl,-r,-d -o $@ $^
+
+mod-_linux.o: mod-_linux.c
+ $(CC) $(CPPFLAGS) $(CFLAGS) $(_linux_mod_CFLAGS) -c -o $@ $<
+
+mod-_linux.c: moddep.lst genmodsrc.sh
+ sh $(srcdir)/genmodsrc.sh '_linux' $< > $@ || (rm -f $@; exit 1)
+
+ifneq ($(_linux_mod_EXPORTS),no)
+def-_linux.lst: pre-_linux.o
+ $(NM) -g --defined-only -P -p $< | sed 's/^\([^ ]*\).*/\1 _linux/' > $@
+endif
+
+und-_linux.lst: pre-_linux.o
+ echo '_linux' > $@
+ $(NM) -u -P -p $< | cut -f1 -d' ' >> $@
+
+_linux_mod-loader_i386_efi_linux.o: loader/i386/efi/linux.c
+ $(CC) -Iloader/i386/efi -I$(srcdir)/loader/i386/efi $(CPPFLAGS) $(CFLAGS) $(_linux_mod_CFLAGS) -c -o $@ $<
+
+_linux_mod-loader_i386_efi_linux.d: loader/i386/efi/linux.c
+ set -e; $(CC) -Iloader/i386/efi -I$(srcdir)/loader/i386/efi $(CPPFLAGS) $(CFLAGS) $(_linux_mod_CFLAGS) -M $< | sed 's,linux\.o[ :]*,_linux_mod-loader_i386_efi_linux.o $@ : ,g' > $@; [ -s $@ ] || rm -f $@
+
+-include _linux_mod-loader_i386_efi_linux.d
+
+CLEANFILES += cmd-_linux_mod-loader_i386_efi_linux.lst fs-_linux_mod-loader_i386_efi_linux.lst
+COMMANDFILES += cmd-_linux_mod-loader_i386_efi_linux.lst
+FSFILES += fs-_linux_mod-loader_i386_efi_linux.lst
+
+cmd-_linux_mod-loader_i386_efi_linux.lst: loader/i386/efi/linux.c gencmdlist.sh
+ set -e; $(CC) -Iloader/i386/efi -I$(srcdir)/loader/i386/efi $(CPPFLAGS) $(CFLAGS) $(_linux_mod_CFLAGS) -E $< | sh $(srcdir)/gencmdlist.sh _linux > $@ || (rm -f $@; exit 1)
+
+fs-_linux_mod-loader_i386_efi_linux.lst: loader/i386/efi/linux.c genfslist.sh
+ set -e; $(CC) -Iloader/i386/efi -I$(srcdir)/loader/i386/efi $(CPPFLAGS) $(CFLAGS) $(_linux_mod_CFLAGS) -E $< | sh $(srcdir)/genfslist.sh _linux > $@ || (rm -f $@; exit 1)
+
+
+_linux_mod_CFLAGS = $(COMMON_CFLAGS)
+_linux_mod_LDFLAGS = $(COMMON_LDFLAGS)
+
+# For linux.mod.
+linux_mod_SOURCES = loader/i386/efi/linux_normal.c
+CLEANFILES += linux.mod mod-linux.o mod-linux.c pre-linux.o linux_mod-loader_i386_efi_linux_normal.o und-linux.lst
+ifneq ($(linux_mod_EXPORTS),no)
+CLEANFILES += def-linux.lst
+DEFSYMFILES += def-linux.lst
+endif
+MOSTLYCLEANFILES += linux_mod-loader_i386_efi_linux_normal.d
+UNDSYMFILES += und-linux.lst
+
+linux.mod: pre-linux.o mod-linux.o
+ -rm -f $@
+ $(CC) $(linux_mod_LDFLAGS) $(LDFLAGS) -Wl,-r,-d -o $@ $^
+ $(STRIP) --strip-unneeded -K grub_mod_init -K grub_mod_fini -R .note -R .comment $@
+
+pre-linux.o: linux_mod-loader_i386_efi_linux_normal.o
+ -rm -f $@
+ $(CC) $(linux_mod_LDFLAGS) $(LDFLAGS) -Wl,-r,-d -o $@ $^
+
+mod-linux.o: mod-linux.c
+ $(CC) $(CPPFLAGS) $(CFLAGS) $(linux_mod_CFLAGS) -c -o $@ $<
+
+mod-linux.c: moddep.lst genmodsrc.sh
+ sh $(srcdir)/genmodsrc.sh 'linux' $< > $@ || (rm -f $@; exit 1)
+
+ifneq ($(linux_mod_EXPORTS),no)
+def-linux.lst: pre-linux.o
+ $(NM) -g --defined-only -P -p $< | sed 's/^\([^ ]*\).*/\1 linux/' > $@
+endif
+
+und-linux.lst: pre-linux.o
+ echo 'linux' > $@
+ $(NM) -u -P -p $< | cut -f1 -d' ' >> $@
+
+linux_mod-loader_i386_efi_linux_normal.o: loader/i386/efi/linux_normal.c
+ $(CC) -Iloader/i386/efi -I$(srcdir)/loader/i386/efi $(CPPFLAGS) $(CFLAGS) $(linux_mod_CFLAGS) -c -o $@ $<
+
+linux_mod-loader_i386_efi_linux_normal.d: loader/i386/efi/linux_normal.c
+ set -e; $(CC) -Iloader/i386/efi -I$(srcdir)/loader/i386/efi $(CPPFLAGS) $(CFLAGS) $(linux_mod_CFLAGS) -M $< | sed 's,linux_normal\.o[ :]*,linux_mod-loader_i386_efi_linux_normal.o $@ : ,g' > $@; [ -s $@ ] || rm -f $@
+
+-include linux_mod-loader_i386_efi_linux_normal.d
+
+CLEANFILES += cmd-linux_mod-loader_i386_efi_linux_normal.lst fs-linux_mod-loader_i386_efi_linux_normal.lst
+COMMANDFILES += cmd-linux_mod-loader_i386_efi_linux_normal.lst
+FSFILES += fs-linux_mod-loader_i386_efi_linux_normal.lst
+
+cmd-linux_mod-loader_i386_efi_linux_normal.lst: loader/i386/efi/linux_normal.c gencmdlist.sh
+ set -e; $(CC) -Iloader/i386/efi -I$(srcdir)/loader/i386/efi $(CPPFLAGS) $(CFLAGS) $(linux_mod_CFLAGS) -E $< | sh $(srcdir)/gencmdlist.sh linux > $@ || (rm -f $@; exit 1)
+
+fs-linux_mod-loader_i386_efi_linux_normal.lst: loader/i386/efi/linux_normal.c genfslist.sh
+ set -e; $(CC) -Iloader/i386/efi -I$(srcdir)/loader/i386/efi $(CPPFLAGS) $(CFLAGS) $(linux_mod_CFLAGS) -E $< | sh $(srcdir)/genfslist.sh linux > $@ || (rm -f $@; exit 1)
+
+
+linux_mod_CFLAGS = $(COMMON_CFLAGS)
+linux_mod_LDFLAGS = $(COMMON_LDFLAGS)
+
include $(srcdir)/conf/common.mk
#endif
\f
+/* Return the offset of the record with the index INDEX, in the node
+ NODE which is part of the B+ tree BTREE. */
+static inline unsigned int
+grub_hfsplus_btree_recoffset (struct grub_hfsplus_btree *btree,
+ struct grub_hfsplus_btnode *node, int index)
+{
+ char *cnode = (char *) node;
+ grub_uint16_t *recptr;
+ recptr = (grub_uint16_t *) (&cnode[btree->nodesize
+ - index * sizeof (grub_uint16_t) - 2]);
+ return grub_be_to_cpu16 (*recptr);
+}
+
+/* Return a pointer to the record with the index INDEX, in the node
+ NODE which is part of the B+ tree BTREE. */
+static inline struct grub_hfsplus_key *
+grub_hfsplus_btree_recptr (struct grub_hfsplus_btree *btree,
+ struct grub_hfsplus_btnode *node, int index)
+{
+ char *cnode = (char *) node;
+ unsigned int offset;
+ offset = grub_hfsplus_btree_recoffset (btree, node, index);
+ return (struct grub_hfsplus_key *) &cnode[offset];
+}
+
+
/* Find the extent that points to FILEBLOCK. If it is not in one of
the 8 extents described by EXTENT, return -1. In that case set
- RETRY to the last block that was found in the last extent. */
+ FILEBLOCK to the next block. */
static int
grub_hfsplus_find_block (struct grub_hfsplus_extent *extent,
- int fileblock, int *retry)
+ int *fileblock)
{
int i;
- grub_size_t blksleft = fileblock;
+ grub_size_t blksleft = *fileblock;
/* First lookup the file in the given extents. */
for (i = 0; i < 8; i++)
blksleft -= grub_be_to_cpu32 (extent[i].count);
}
- *retry = fileblock - blksleft;
+ *fileblock = blksleft;
return -1;
}
static int
grub_hfsplus_read_block (grub_fshelp_node_t node, int fileblock)
{
- struct grub_hfsplus_extkey_internal extoverflow;
- struct grub_hfsplus_extkey *keyfound;
- int blk;
struct grub_hfsplus_btnode *nnode = 0;
- int ptr;
- int retry = 0;
-
+ int blksleft = fileblock;
struct grub_hfsplus_extent *extents = &node->extents[0];
while (1)
{
- char *cnode;
+ struct grub_hfsplus_extkey *key;
+ struct grub_hfsplus_extkey_internal extoverflow;
+ int blk;
+ int ptr;
/* Try to find this block in the current set of extents. */
- blk = grub_hfsplus_find_block (extents, fileblock, &retry);
+ blk = grub_hfsplus_find_block (extents, &blksleft);
/* The previous iteration of this loop allocated memory. The
code above used this memory, it can be free'ed now. */
the extent overflow file. If this happens, you found a
bug... */
if (node->fileid == GRUB_HFSPLUS_FILEID_OVERFLOW)
- break;
+ {
+ grub_error (GRUB_ERR_READ_ERROR,
+ "extra extents found in an extend overflow file");
+ break;
+ }
/* Set up the key to look for in the extent overflow file. */
extoverflow.fileid = node->fileid;
- extoverflow.start = retry;
+ extoverflow.start = fileblock - blksleft;
if (grub_hfsplus_btree_search (&node->data->extoverflow_tree,
(struct grub_hfsplus_key_internal *) &extoverflow,
grub_hfsplus_cmp_extkey, &nnode, &ptr))
- break;
-
- cnode = (char *) nnode;
+ {
+ grub_error (GRUB_ERR_READ_ERROR,
+ "no block found for the file id 0x%x and the block offset 0x%x",
+ node->fileid, fileblock);
+ break;
+ }
- /* The extent overflow file has a 8 extents right after the key. */
- keyfound = (struct grub_hfsplus_extkey *)
- &cnode[(int) cnode[node->data->extoverflow_tree.nodesize - ptr - 1]];
- extents = (struct grub_hfsplus_extent *)
- ((char *) keyfound + sizeof (struct grub_hfsplus_extkey));
+ /* The extent overflow file has 8 extents right after the key. */
+ key = (struct grub_hfsplus_extkey *)
+ grub_hfsplus_btree_recptr (&node->data->extoverflow_tree, nnode, ptr);
+ extents = (struct grub_hfsplus_extent *) (key + 1);
/* The block wasn't found. Perhaps the next iteration will find
- it. The last block we found is stored in FILEBLOCK now. */
- /* XXX: Multiple iterations for locating the right extent was
- not tested enough... */
- fileblock = retry;
+ it. The last block we found is stored in BLKSLEFT now. */
}
grub_free (nnode);
return diff;
}
-/* Return the offset of the record with the index INDEX, in the node
- NODE which is part of the B+ tree BTREE. */
-static inline unsigned int
-grub_hfsplus_btree_recoffset (struct grub_hfsplus_btree *btree,
- struct grub_hfsplus_btnode *node, int index)
-{
- char *cnode = (char *) node;
- grub_uint16_t *recptr;
- recptr = (grub_uint16_t *) (&cnode[btree->nodesize
- - index * sizeof (grub_uint16_t) - 2]);
- return grub_be_to_cpu16 (*recptr);
-}
-
-/* Return a pointer to the record with the index INDEX, in the node
- NODE which is part of the B+ tree BTREE. */
-static inline struct grub_hfsplus_key *
-grub_hfsplus_btree_recptr (struct grub_hfsplus_btree *btree,
- struct grub_hfsplus_btnode *node, int index)
-{
- char *cnode = (char *) node;
- unsigned int offset;
- offset = grub_hfsplus_btree_recoffset (btree, node, index);
- return (struct grub_hfsplus_key *) &cnode[offset];
-}
-
-
static char *
grub_hfsplus_read_symlink (grub_fshelp_node_t node)
{
for (rec = 0; rec < grub_be_to_cpu16 (nodedesc->count); rec++)
{
struct grub_hfsplus_key *currkey;
- currkey = grub_hfsplus_btree_recptr (btree, nodedesc, rec);
-
+ currkey = grub_hfsplus_btree_recptr (btree, nodedesc, rec);
+
/* The action that has to be taken depend on the type of
record. */
if (nodedesc->type == GRUB_HFSPLUS_BTNODE_TYPE_LEAF
}
}
- /* No match was found, no record with this key exists in the
+ /* No match is found, no record with this key exists in the
tree. */
if (! match)
{
*matchnode = 0;
grub_free (node);
- return 0;
+ return 1;
}
}
}
--- /dev/null
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2006 Free Software Foundation, Inc.
+ *
+ * This program 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <grub/loader.h>
+#include <grub/machine/loader.h>
+#include <grub/file.h>
+#include <grub/disk.h>
+#include <grub/err.h>
+#include <grub/misc.h>
+#include <grub/types.h>
+#include <grub/rescue.h>
+#include <grub/dl.h>
+#include <grub/mm.h>
+#include <grub/term.h>
+#include <grub/cpu/linux.h>
+#include <grub/efi/api.h>
+#include <grub/efi/efi.h>
+
+#define NEXT_MEMORY_DESCRIPTOR(desc, size) \
+ ((grub_efi_memory_descriptor_t *) ((char *) (desc) + (size)))
+
+static grub_dl_t my_mod;
+
+static grub_size_t linux_mem_size;
+static int loaded;
+static void *real_mode_mem;
+static void *prot_mode_mem;
+static void *initrd_mem;
+static grub_efi_uintn_t real_mode_pages;
+static grub_efi_uintn_t prot_mode_pages;
+static grub_efi_uintn_t initrd_pages;
+static void *mmap_buf;
+
+static grub_uint8_t gdt[] __attribute__ ((aligned(16))) =
+ {
+ /* NULL. */
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ /* Reserved. */
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ /* Code segment. */
+ 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x9A, 0xCF, 0x00,
+ /* Data segment. */
+ 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x92, 0xCF, 0x00
+ };
+
+struct gdt_descriptor
+{
+ grub_uint16_t dummy;
+ grub_uint16_t limit;
+ grub_uint32_t base;
+} __attribute__ ((aligned(4), packed));
+
+static struct gdt_descriptor gdt_desc =
+ {
+ 0,
+ sizeof (gdt) - 1,
+ (grub_addr_t) gdt
+ };
+
+struct idt_descriptor
+{
+ grub_uint16_t dummy;
+ grub_uint16_t limit;
+ grub_uint32_t base;
+} __attribute__ ((aligned(4)));
+
+static struct idt_descriptor idt_desc =
+ {
+ 0,
+ 0,
+ 0
+ };
+
+static inline grub_size_t
+page_align (grub_size_t size)
+{
+ return (size + (1 << 12) - 1) & (~((1 << 12) - 1));
+}
+
+/* Find the optimal number of pages for the memory map. Is it better to
+ move this code to efi/mm.c? */
+static grub_efi_uintn_t
+find_mmap_size (void)
+{
+ static grub_efi_uintn_t mmap_size = 0;
+
+ if (mmap_size != 0)
+ return mmap_size;
+
+ mmap_size = (1 << 12);
+ while (1)
+ {
+ int ret;
+ grub_efi_memory_descriptor_t *mmap;
+ grub_efi_uintn_t desc_size;
+
+ mmap = grub_malloc (mmap_size);
+ if (! mmap)
+ return 0;
+
+ ret = grub_efi_get_memory_map (&mmap_size, mmap, 0, &desc_size, 0);
+ grub_free (mmap);
+
+ if (ret < 0)
+ grub_fatal ("cannot get memory map");
+ else if (ret > 0)
+ break;
+
+ mmap_size += (1 << 12);
+ }
+
+ /* Increase the size a bit for safety, because GRUB allocates more on
+ later, and EFI itself may allocate more. */
+ mmap_size += (1 << 12);
+
+ return page_align (mmap_size);
+}
+
+static void
+free_pages (void)
+{
+ if (real_mode_mem)
+ {
+ grub_efi_free_pages ((grub_addr_t) real_mode_mem, real_mode_pages);
+ real_mode_mem = 0;
+ }
+
+ if (prot_mode_mem)
+ {
+ grub_efi_free_pages ((grub_addr_t) prot_mode_mem, prot_mode_pages);
+ prot_mode_mem = 0;
+ }
+
+ if (initrd_mem)
+ {
+ grub_efi_free_pages ((grub_addr_t) initrd_mem, initrd_pages);
+ initrd_mem = 0;
+ }
+}
+
+/* Allocate pages for the real mode code and the protected mode code
+ for linux as well as a memory map buffer. */
+static int
+allocate_pages (grub_size_t real_size, grub_size_t prot_size)
+{
+ grub_efi_uintn_t desc_size;
+ grub_efi_memory_descriptor_t *mmap, *mmap_end;
+ grub_efi_uintn_t mmap_size, tmp_mmap_size;
+ grub_efi_memory_descriptor_t *desc;
+
+ /* Make sure that each size is aligned to a page boundary. */
+ real_size = page_align (real_size + GRUB_DISK_SECTOR_SIZE);
+ prot_size = page_align (prot_size);
+ mmap_size = find_mmap_size ();
+
+ grub_dprintf ("linux", "real_size = %x, prot_size = %x, mmap_size = %x\n",
+ real_size, prot_size, mmap_size);
+
+ /* Calculate the number of pages; Combine the real mode code with
+ the memory map buffer for simplicity. */
+ real_mode_pages = ((real_size + mmap_size) >> 12);
+ prot_mode_pages = (prot_size >> 12);
+
+ /* Initialize the memory pointers with NULL for convenience. */
+ real_mode_mem = 0;
+ prot_mode_mem = 0;
+
+ /* Read the memory map temporarily, to find free space. */
+ mmap = grub_malloc (mmap_size);
+ if (! mmap)
+ return 0;
+
+ tmp_mmap_size = mmap_size;
+ if (grub_efi_get_memory_map (&tmp_mmap_size, mmap, 0, &desc_size, 0) <= 0)
+ grub_fatal ("cannot get memory map");
+
+ mmap_end = NEXT_MEMORY_DESCRIPTOR (mmap, tmp_mmap_size);
+
+ /* First, find free pages for the real mode code
+ and the memory map buffer. */
+ for (desc = mmap;
+ desc < mmap_end;
+ desc = NEXT_MEMORY_DESCRIPTOR (desc, desc_size))
+ {
+ /* Probably it is better to put the real mode code in the traditional
+ space for safety. */
+ if (desc->type == GRUB_EFI_CONVENTIONAL_MEMORY
+ && desc->physical_start <= 0x90000
+ && desc->num_pages >= real_mode_pages)
+ {
+ grub_efi_physical_address_t physical_end;
+ grub_efi_physical_address_t addr;
+
+ physical_end = desc->physical_start + (desc->num_pages << 12);
+ if (physical_end > 0x90000)
+ physical_end = 0x90000;
+
+ grub_dprintf ("linux", "physical_start = %x, physical_end = %x\n",
+ (unsigned) desc->physical_start,
+ (unsigned) physical_end);
+ addr = physical_end - real_size - mmap_size;
+ if (addr < 0x10000)
+ continue;
+
+ grub_dprintf ("linux", "trying to allocate %u pages at %x\n",
+ real_mode_pages, (unsigned) addr);
+ real_mode_mem = grub_efi_allocate_pages (addr, real_mode_pages);
+ if (! real_mode_mem)
+ grub_fatal ("cannot allocate pages");
+
+ desc->num_pages -= real_mode_pages;
+ break;
+ }
+ }
+
+ if (! real_mode_mem)
+ {
+ grub_error (GRUB_ERR_OUT_OF_MEMORY, "cannot allocate real mode pages");
+ goto fail;
+ }
+
+ mmap_buf = (void *) ((char *) real_mode_mem + real_size);
+
+ /* Next, find free pages for the protected mode code. */
+ /* XXX what happens if anything is using this address? */
+ prot_mode_mem = grub_efi_allocate_pages (0x100000, prot_mode_pages);
+ if (! prot_mode_mem)
+ {
+ grub_error (GRUB_ERR_OUT_OF_MEMORY,
+ "cannot allocate protected mode pages");
+ goto fail;
+ }
+
+ grub_free (mmap);
+ return 1;
+
+ fail:
+ grub_free (mmap);
+ free_pages ();
+ return 0;
+}
+
+static grub_err_t
+grub_linux_boot (void)
+{
+ struct linux_kernel_header *lh;
+ struct linux_kernel_params *params;
+ grub_efi_uintn_t mmap_size;
+ grub_efi_uintn_t map_key;
+ grub_efi_uintn_t desc_size;
+ grub_efi_uint32_t desc_version;
+
+ lh = real_mode_mem;
+ params = real_mode_mem;
+
+ grub_dprintf ("linux", "code32_start = %x, idt_desc = %x, gdt_desc = %x\n",
+ (unsigned) lh->code32_start, (grub_addr_t) &(idt_desc.limit),
+ (grub_addr_t) &(gdt_desc.limit));
+ grub_dprintf ("linux", "idt = %x:%x, gdt = %x:%x\n",
+ (unsigned) idt_desc.limit, (unsigned) idt_desc.base,
+ (unsigned) gdt_desc.limit, (unsigned) gdt_desc.base);
+ mmap_size = find_mmap_size ();
+ if (grub_efi_get_memory_map (&mmap_size, mmap_buf, &map_key,
+ &desc_size, &desc_version) <= 0)
+ grub_fatal ("cannot get memory map");
+
+ if (! grub_efi_exit_boot_services (map_key))
+ grub_fatal ("cannot exit boot services");
+
+ /* Note that no boot services are available from here. */
+
+ /* Hardware interrupts are not safe any longer. */
+ asm volatile ("cli" : : );
+
+ /* Pass EFI parameters. */
+ params->efi_mem_desc_size = desc_size;
+ params->efi_mem_desc_version = desc_version;
+ params->efi_mmap = (grub_addr_t) mmap_buf;
+ params->efi_mmap_size = mmap_size;
+
+ /* Pass parameters. */
+ asm volatile ("movl %0, %%esi" : : "m" (real_mode_mem));
+ asm volatile ("movl %0, %%ecx" : : "m" (lh->code32_start));
+ asm volatile ("xorl %%ebx, %%ebx" : : );
+
+ /* Load the IDT and the GDT for the bootstrap. */
+ asm volatile ("lidt %0" : : "m" (idt_desc.limit));
+ asm volatile ("lgdt %0" : : "m" (gdt_desc.limit));
+
+ /* Enter Linux. */
+ asm volatile ("jmp *%%ecx" : : );
+
+ /* Never reach here. */
+ return GRUB_ERR_NONE;
+}
+
+static grub_err_t
+grub_linux_unload (void)
+{
+ free_pages ();
+ grub_dl_unref (my_mod);
+ loaded = 0;
+ return GRUB_ERR_NONE;
+}
+
+void
+grub_rescue_cmd_linux (int argc, char *argv[])
+{
+ grub_file_t file = 0;
+ struct linux_kernel_header lh;
+ struct linux_kernel_params *params;
+ grub_uint8_t setup_sects;
+ grub_size_t real_size, prot_size;
+ grub_ssize_t len;
+ int i;
+ char *dest;
+
+ grub_dl_ref (my_mod);
+
+ if (argc == 0)
+ {
+ grub_error (GRUB_ERR_BAD_ARGUMENT, "no kernel specified");
+ goto fail;
+ }
+
+ file = grub_file_open (argv[0]);
+ if (! file)
+ goto fail;
+
+ if (grub_file_read (file, (char *) &lh, sizeof (lh)) != sizeof (lh))
+ {
+ grub_error (GRUB_ERR_READ_ERROR, "cannot read the linux header");
+ goto fail;
+ }
+
+ if (lh.boot_flag != grub_cpu_to_le16 (0xaa55))
+ {
+ grub_error (GRUB_ERR_BAD_OS, "invalid magic number");
+ goto fail;
+ }
+
+ if (lh.setup_sects > GRUB_LINUX_MAX_SETUP_SECTS)
+ {
+ grub_error (GRUB_ERR_BAD_OS, "too many setup sectors");
+ goto fail;
+ }
+
+ /* EFI support is quite new, so reject old versions. */
+ if (lh.header != grub_cpu_to_le32 (GRUB_LINUX_MAGIC_SIGNATURE)
+ || grub_le_to_cpu16 (lh.version) < 0x0203)
+ {
+ grub_error (GRUB_ERR_BAD_OS, "too old version");
+ goto fail;
+ }
+
+ /* I'm not sure how to support zImage on EFI. */
+ if (! (lh.loadflags & GRUB_LINUX_FLAG_BIG_KERNEL))
+ {
+ grub_error (GRUB_ERR_BAD_OS, "zImage is not supported");
+ goto fail;
+ }
+
+ setup_sects = lh.setup_sects;
+
+ /* If SETUP_SECTS is not set, set it to the default (4). */
+ if (! setup_sects)
+ setup_sects = GRUB_LINUX_DEFAULT_SETUP_SECTS;
+
+ real_size = setup_sects << GRUB_DISK_SECTOR_BITS;
+ prot_size = grub_file_size (file) - real_size - GRUB_DISK_SECTOR_SIZE;
+
+ if (! allocate_pages (real_size, prot_size))
+ goto fail;
+
+ /* XXX Linux assumes that only elilo can boot Linux on EFI!!! */
+ lh.type_of_loader = 0x50;
+
+ lh.cl_magic = GRUB_LINUX_CL_MAGIC;
+ lh.cl_offset = GRUB_LINUX_CL_END_OFFSET;
+ lh.cmd_line_ptr = (char *) real_mode_mem + GRUB_LINUX_CL_OFFSET;
+ lh.ramdisk_image = 0;
+ lh.ramdisk_size = 0;
+
+ params = (struct linux_kernel_params *) &lh;
+
+ /* These are not needed to be precise, because Linux uses these values
+ only to raise an error when the decompression code cannot find good
+ space. */
+ params->ext_mem = ((32 * 0x100000) >> 10);
+ params->alt_mem = ((32 * 0x100000) >> 10);
+
+ params->video_cursor_x = grub_efi_system_table->con_out->mode->cursor_column;
+ params->video_cursor_y = grub_efi_system_table->con_out->mode->cursor_row;
+ params->video_page = 0; /* ??? */
+ params->video_mode = grub_efi_system_table->con_out->mode->mode;
+ params->video_width = (grub_getwh () >> 8);
+ params->video_ega_bx = 0;
+ params->video_height = (grub_getwh () & 0xff);
+ params->have_vga = 0;
+ params->font_size = 16; /* XXX */
+
+ /* No VBE on EFI. */
+ params->lfb_width = 0;
+ params->lfb_height = 0;
+ params->lfb_depth = 0;
+ params->lfb_base = 0;
+ params->lfb_size = 0;
+ params->lfb_line_len = 0;
+ params->red_mask_size = 0;
+ params->red_field_pos = 0;
+ params->green_mask_size = 0;
+ params->green_field_pos = 0;
+ params->blue_mask_size = 0;
+ params->blue_field_pos = 0;
+ params->reserved_mask_size = 0;
+ params->reserved_field_pos = 0;
+ params->vesapm_segment = 0;
+ params->vesapm_offset = 0;
+ params->lfb_pages = 0;
+ params->vesa_attrib = 0;
+
+ /* No APM on EFI. */
+ params->apm_version = 0;
+ params->apm_code_segment = 0;
+ params->apm_entry = 0;
+ params->apm_16bit_code_segment = 0;
+ params->apm_data_segment = 0;
+ params->apm_flags = 0;
+ params->apm_code_len = 0;
+ params->apm_data_len = 0;
+
+ /* XXX is there any way to use SpeedStep on EFI? */
+ params->ist_signature = 0;
+ params->ist_command = 0;
+ params->ist_event = 0;
+ params->ist_perf_level = 0;
+
+ /* Let the kernel probe the information. */
+ grub_memset (params->hd0_drive_info, 0, sizeof (params->hd0_drive_info));
+ grub_memset (params->hd1_drive_info, 0, sizeof (params->hd1_drive_info));
+
+ /* No MCA on EFI. */
+ params->rom_config_len = 0;
+
+ params->efi_signature = GRUB_LINUX_EFI_SIGNATURE; /* XXX not used */
+ params->efi_system_table = (grub_addr_t) grub_efi_system_table;
+ /* The other EFI parameters are filled when booting. */
+
+ /* No need to fake the BIOS's memory map. */
+ params->mmap_size = 0;
+
+ /* Let the kernel probe the information. */
+ params->ps_mouse = 0;
+
+ /* Clear padding for future compatibility. */
+ grub_memset (params->padding1, 0, sizeof (params->padding1));
+ grub_memset (params->padding2, 0, sizeof (params->padding2));
+ grub_memset (params->padding3, 0, sizeof (params->padding3));
+ grub_memset (params->padding4, 0, sizeof (params->padding4));
+ grub_memset (params->padding5, 0, sizeof (params->padding5));
+ grub_memset (params->padding6, 0, sizeof (params->padding6));
+ grub_memset (params->padding7, 0, sizeof (params->padding7));
+ grub_memset (params->padding8, 0, sizeof (params->padding8));
+ grub_memset (params->padding9, 0, sizeof (params->padding9));
+
+ /* Put the real mode code at the real location. */
+ grub_memmove (real_mode_mem, &lh, sizeof (lh));
+
+ len = real_size + GRUB_DISK_SECTOR_SIZE - sizeof (lh);
+ if (grub_file_read (file, (char *) real_mode_mem + sizeof (lh), len) != len)
+ {
+ grub_error (GRUB_ERR_FILE_READ_ERROR, "Couldn't read file");
+ goto fail;
+ }
+
+ /* XXX there is no way to know if the kernel really supports EFI. */
+ grub_printf (" [Linux-EFI, setup=0x%x, size=0x%x]\n",
+ real_size, prot_size);
+
+ /* Detect explicitly specified memory size, if any. */
+ linux_mem_size = 0;
+ for (i = 1; i < argc; i++)
+ if (grub_memcmp (argv[i], "mem=", 4) == 0)
+ {
+ char *val = argv[i] + 4;
+
+ linux_mem_size = grub_strtoul (val, &val, 0);
+
+ if (grub_errno)
+ {
+ grub_errno = GRUB_ERR_NONE;
+ linux_mem_size = 0;
+ }
+ else
+ {
+ int shift = 0;
+
+ switch (grub_tolower (val[0]))
+ {
+ case 'g':
+ shift += 10;
+ case 'm':
+ shift += 10;
+ case 'k':
+ shift += 10;
+ default:
+ break;
+ }
+
+ /* Check an overflow. */
+ if (linux_mem_size > (~0UL >> shift))
+ linux_mem_size = 0;
+ else
+ linux_mem_size <<= shift;
+ }
+ }
+
+ /* Specify the boot file. */
+ dest = grub_stpcpy ((char *) real_mode_mem + GRUB_LINUX_CL_OFFSET,
+ "BOOT_IMAGE=");
+ dest = grub_stpcpy (dest, argv[0]);
+
+ /* Copy kernel parameters. */
+ for (i = 1;
+ i < argc
+ && dest + grub_strlen (argv[i]) + 1 < ((char *) real_mode_mem
+ + GRUB_LINUX_CL_END_OFFSET);
+ i++)
+ {
+ *dest++ = ' ';
+ dest = grub_stpcpy (dest, argv[i]);
+ }
+
+ len = prot_size;
+ if (grub_file_read (file, (char *) GRUB_LINUX_BZIMAGE_ADDR, len) != len)
+ grub_error (GRUB_ERR_FILE_READ_ERROR, "Couldn't read file");
+
+ if (grub_errno == GRUB_ERR_NONE)
+ {
+ grub_loader_set (grub_linux_boot, grub_linux_unload, 1);
+ loaded = 1;
+ }
+
+ fail:
+
+ if (file)
+ grub_file_close (file);
+
+ if (grub_errno != GRUB_ERR_NONE)
+ {
+ grub_dl_unref (my_mod);
+ loaded = 0;
+ }
+}
+
+void
+grub_rescue_cmd_initrd (int argc, char *argv[])
+{
+ grub_file_t file = 0;
+ grub_ssize_t size;
+ grub_addr_t addr_min, addr_max;
+ grub_addr_t addr;
+ grub_efi_uintn_t mmap_size;
+ grub_efi_memory_descriptor_t *desc;
+ grub_efi_uintn_t desc_size;
+ struct linux_kernel_header *lh;
+
+ if (argc == 0)
+ {
+ grub_error (GRUB_ERR_BAD_ARGUMENT, "No module specified");
+ goto fail;
+ }
+
+ if (! loaded)
+ {
+ grub_error (GRUB_ERR_BAD_ARGUMENT, "You need to load the kernel first.");
+ goto fail;
+ }
+
+ file = grub_file_open (argv[0]);
+ if (! file)
+ goto fail;
+
+ size = grub_file_size (file);
+ initrd_pages = (page_align (size) >> 12);
+
+ lh = (struct linux_kernel_header *) real_mode_mem;
+
+ addr_max = grub_cpu_to_le32 (lh->initrd_addr_max);
+ if (linux_mem_size != 0 && linux_mem_size < addr_max)
+ addr_max = linux_mem_size;
+
+ /* Linux 2.3.xx has a bug in the memory range check, so avoid
+ the last page.
+ Linux 2.2.xx has a bug in the memory range check, which is
+ worse than that of Linux 2.3.xx, so avoid the last 64kb. */
+ addr_max -= 0x10000;
+
+ /* Usually, the compression ratio is about 50%. */
+ addr_min = (grub_addr_t) prot_mode_mem + ((prot_mode_pages * 3) << 12);
+
+ /* Find the highest address to put the initrd. */
+ mmap_size = find_mmap_size ();
+ if (grub_efi_get_memory_map (&mmap_size, mmap_buf, 0, &desc_size, 0) <= 0)
+ grub_fatal ("cannot get memory map");
+
+ addr = 0;
+ for (desc = mmap_buf;
+ desc < NEXT_MEMORY_DESCRIPTOR (mmap_buf, mmap_size);
+ desc = NEXT_MEMORY_DESCRIPTOR (desc, desc_size))
+ {
+ if (desc->type == GRUB_EFI_CONVENTIONAL_MEMORY
+ && desc->physical_start >= addr_min
+ && desc->physical_start + size < addr_max
+ && desc->num_pages >= initrd_pages)
+ {
+ grub_efi_physical_address_t physical_end;
+
+ physical_end = desc->physical_start + (desc->num_pages << 12);
+ if (physical_end > addr_max)
+ physical_end = addr_max;
+
+ if (physical_end > addr)
+ addr = physical_end - page_align (size);
+ }
+ }
+
+ if (addr == 0)
+ {
+ grub_error (GRUB_ERR_OUT_OF_MEMORY, "no free pages available");
+ goto fail;
+ }
+
+ initrd_mem = grub_efi_allocate_pages (addr, initrd_pages);
+ if (! initrd_mem)
+ grub_fatal ("cannot allocate pages");
+
+ if (grub_file_read (file, initrd_mem, size) != size)
+ {
+ grub_error (GRUB_ERR_FILE_READ_ERROR, "Couldn't read file");
+ goto fail;
+ }
+
+ grub_printf (" [Initrd, addr=0x%x, size=0x%x]\n",
+ addr, size);
+
+ lh->ramdisk_image = addr;
+ lh->ramdisk_size = size;
+ lh->root_dev = 0x0100; /* XXX */
+
+ fail:
+ if (file)
+ grub_file_close (file);
+}
+
+
+GRUB_MOD_INIT(linux)
+{
+ grub_rescue_register_command ("linux",
+ grub_rescue_cmd_linux,
+ "load linux");
+ grub_rescue_register_command ("initrd",
+ grub_rescue_cmd_initrd,
+ "load initrd");
+ my_mod = mod;
+}
+
+GRUB_MOD_FINI(linux)
+{
+ grub_rescue_unregister_command ("linux");
+ grub_rescue_unregister_command ("initrd");
+}
projects / thirdparty / grub.git / commitdiff
