Use newly-added Multiboot support in coreboot.
* conf/i386-coreboot.rmk (kernel_elf_SOURCES): Replace
`kern/i386/coreboot/mmap.c' with `kern/i386/multiboot_mmap.c'.
* kern/i386/coreboot/startup.S: Enable Multiboot header, fix its
alignment, set `MULTIBOOT_MEMORY_INFO' flag.
(codestart): Store the MBI in `startup_multiboot_info' when we're
being loaded using Multiboot.
* kern/i386/coreboot/init.c (grub_machine_init): Move
grub_at_keyboard_init() call to beginning of function (useful for
debugging). Call grub_machine_mmap_init() before attempting to use
grub_machine_mmap_iterate().
(grub_lower_mem, grub_upper_mem): Move from here ...
* kern/i386/multiboot_mmap.c (grub_lower_mem, grub_upper_mem): ... to
here (new file).
* include/grub/i386/coreboot/memory.h (grub_machine_mmap_init): New
function prototype.
+2008-11-12 Robert Millan <rmh@aybabtu.com>
+
+ Use newly-added Multiboot support in coreboot.
+
+ * conf/i386-coreboot.rmk (kernel_elf_SOURCES): Replace
+ `kern/i386/coreboot/mmap.c' with `kern/i386/multiboot_mmap.c'.
+
+ * kern/i386/coreboot/startup.S: Enable Multiboot header, fix its
+ alignment, set `MULTIBOOT_MEMORY_INFO' flag.
+ (codestart): Store the MBI in `startup_multiboot_info' when we're
+ being loaded using Multiboot.
+
+ * kern/i386/coreboot/init.c (grub_machine_init): Move
+ grub_at_keyboard_init() call to beginning of function (useful for
+ debugging). Call grub_machine_mmap_init() before attempting to use
+ grub_machine_mmap_iterate().
+ (grub_lower_mem, grub_upper_mem): Move from here ...
+ * kern/i386/multiboot_mmap.c (grub_lower_mem, grub_upper_mem): ... to
+ here (new file).
+
+ * include/grub/i386/coreboot/memory.h (grub_machine_mmap_init): New
+ function prototype.
+
2008-11-12 Robert Millan <rmh@aybabtu.com>
Fix a regression introduced by the at_keyboard.mod split. Because
kern/i386/dl.c
kern/i386/halt.c
kern/i386/loader.S
+kern/i386/multiboot_mmap.c
kern/i386/pit.c
kern/i386/realmode.S
kern/i386/reboot.c
# For kernel.elf.
kernel_elf_SOURCES = kern/i386/coreboot/startup.S \
kern/i386/coreboot/init.c \
- kern/i386/coreboot/mmap.c \
+ kern/i386/multiboot_mmap.c \
kern/main.c kern/device.c \
kern/disk.c kern/dl.c kern/file.c kern/fs.c kern/err.c \
kern/misc.c kern/mm.c kern/loader.c kern/rescue.c kern/term.c \
term/i386/pc/console.c \
term/i386/pc/at_keyboard.c term/i386/pc/vga_text.c \
symlist.c
-CLEANFILES += kernel.elf kernel_elf-kern_i386_coreboot_startup.o kernel_elf-kern_i386_coreboot_init.o kernel_elf-kern_i386_coreboot_mmap.o kernel_elf-kern_main.o kernel_elf-kern_device.o kernel_elf-kern_disk.o kernel_elf-kern_dl.o kernel_elf-kern_file.o kernel_elf-kern_fs.o kernel_elf-kern_err.o kernel_elf-kern_misc.o kernel_elf-kern_mm.o kernel_elf-kern_loader.o kernel_elf-kern_rescue.o kernel_elf-kern_term.o kernel_elf-kern_time.o kernel_elf-kern_i386_dl.o kernel_elf-kern_parser.o kernel_elf-kern_partition.o kernel_elf-kern_i386_tsc.o kernel_elf-kern_i386_pit.o kernel_elf-kern_generic_rtc_get_time_ms.o kernel_elf-kern_generic_millisleep.o kernel_elf-kern_env.o kernel_elf-term_i386_pc_console.o kernel_elf-term_i386_pc_at_keyboard.o kernel_elf-term_i386_pc_vga_text.o kernel_elf-symlist.o
-MOSTLYCLEANFILES += kernel_elf-kern_i386_coreboot_startup.d kernel_elf-kern_i386_coreboot_init.d kernel_elf-kern_i386_coreboot_mmap.d kernel_elf-kern_main.d kernel_elf-kern_device.d kernel_elf-kern_disk.d kernel_elf-kern_dl.d kernel_elf-kern_file.d kernel_elf-kern_fs.d kernel_elf-kern_err.d kernel_elf-kern_misc.d kernel_elf-kern_mm.d kernel_elf-kern_loader.d kernel_elf-kern_rescue.d kernel_elf-kern_term.d kernel_elf-kern_time.d kernel_elf-kern_i386_dl.d kernel_elf-kern_parser.d kernel_elf-kern_partition.d kernel_elf-kern_i386_tsc.d kernel_elf-kern_i386_pit.d kernel_elf-kern_generic_rtc_get_time_ms.d kernel_elf-kern_generic_millisleep.d kernel_elf-kern_env.d kernel_elf-term_i386_pc_console.d kernel_elf-term_i386_pc_at_keyboard.d kernel_elf-term_i386_pc_vga_text.d kernel_elf-symlist.d
+CLEANFILES += kernel.elf kernel_elf-kern_i386_coreboot_startup.o kernel_elf-kern_i386_coreboot_init.o kernel_elf-kern_i386_multiboot_mmap.o kernel_elf-kern_main.o kernel_elf-kern_device.o kernel_elf-kern_disk.o kernel_elf-kern_dl.o kernel_elf-kern_file.o kernel_elf-kern_fs.o kernel_elf-kern_err.o kernel_elf-kern_misc.o kernel_elf-kern_mm.o kernel_elf-kern_loader.o kernel_elf-kern_rescue.o kernel_elf-kern_term.o kernel_elf-kern_time.o kernel_elf-kern_i386_dl.o kernel_elf-kern_parser.o kernel_elf-kern_partition.o kernel_elf-kern_i386_tsc.o kernel_elf-kern_i386_pit.o kernel_elf-kern_generic_rtc_get_time_ms.o kernel_elf-kern_generic_millisleep.o kernel_elf-kern_env.o kernel_elf-term_i386_pc_console.o kernel_elf-term_i386_pc_at_keyboard.o kernel_elf-term_i386_pc_vga_text.o kernel_elf-symlist.o
+MOSTLYCLEANFILES += kernel_elf-kern_i386_coreboot_startup.d kernel_elf-kern_i386_coreboot_init.d kernel_elf-kern_i386_multiboot_mmap.d kernel_elf-kern_main.d kernel_elf-kern_device.d kernel_elf-kern_disk.d kernel_elf-kern_dl.d kernel_elf-kern_file.d kernel_elf-kern_fs.d kernel_elf-kern_err.d kernel_elf-kern_misc.d kernel_elf-kern_mm.d kernel_elf-kern_loader.d kernel_elf-kern_rescue.d kernel_elf-kern_term.d kernel_elf-kern_time.d kernel_elf-kern_i386_dl.d kernel_elf-kern_parser.d kernel_elf-kern_partition.d kernel_elf-kern_i386_tsc.d kernel_elf-kern_i386_pit.d kernel_elf-kern_generic_rtc_get_time_ms.d kernel_elf-kern_generic_millisleep.d kernel_elf-kern_env.d kernel_elf-term_i386_pc_console.d kernel_elf-term_i386_pc_at_keyboard.d kernel_elf-term_i386_pc_vga_text.d kernel_elf-symlist.d
-kernel.elf: $(kernel_elf_DEPENDENCIES) kernel_elf-kern_i386_coreboot_startup.o kernel_elf-kern_i386_coreboot_init.o kernel_elf-kern_i386_coreboot_mmap.o kernel_elf-kern_main.o kernel_elf-kern_device.o kernel_elf-kern_disk.o kernel_elf-kern_dl.o kernel_elf-kern_file.o kernel_elf-kern_fs.o kernel_elf-kern_err.o kernel_elf-kern_misc.o kernel_elf-kern_mm.o kernel_elf-kern_loader.o kernel_elf-kern_rescue.o kernel_elf-kern_term.o kernel_elf-kern_time.o kernel_elf-kern_i386_dl.o kernel_elf-kern_parser.o kernel_elf-kern_partition.o kernel_elf-kern_i386_tsc.o kernel_elf-kern_i386_pit.o kernel_elf-kern_generic_rtc_get_time_ms.o kernel_elf-kern_generic_millisleep.o kernel_elf-kern_env.o kernel_elf-term_i386_pc_console.o kernel_elf-term_i386_pc_at_keyboard.o kernel_elf-term_i386_pc_vga_text.o kernel_elf-symlist.o
- $(TARGET_CC) -o $@ kernel_elf-kern_i386_coreboot_startup.o kernel_elf-kern_i386_coreboot_init.o kernel_elf-kern_i386_coreboot_mmap.o kernel_elf-kern_main.o kernel_elf-kern_device.o kernel_elf-kern_disk.o kernel_elf-kern_dl.o kernel_elf-kern_file.o kernel_elf-kern_fs.o kernel_elf-kern_err.o kernel_elf-kern_misc.o kernel_elf-kern_mm.o kernel_elf-kern_loader.o kernel_elf-kern_rescue.o kernel_elf-kern_term.o kernel_elf-kern_time.o kernel_elf-kern_i386_dl.o kernel_elf-kern_parser.o kernel_elf-kern_partition.o kernel_elf-kern_i386_tsc.o kernel_elf-kern_i386_pit.o kernel_elf-kern_generic_rtc_get_time_ms.o kernel_elf-kern_generic_millisleep.o kernel_elf-kern_env.o kernel_elf-term_i386_pc_console.o kernel_elf-term_i386_pc_at_keyboard.o kernel_elf-term_i386_pc_vga_text.o kernel_elf-symlist.o $(TARGET_LDFLAGS) $(kernel_elf_LDFLAGS)
+kernel.elf: $(kernel_elf_DEPENDENCIES) kernel_elf-kern_i386_coreboot_startup.o kernel_elf-kern_i386_coreboot_init.o kernel_elf-kern_i386_multiboot_mmap.o kernel_elf-kern_main.o kernel_elf-kern_device.o kernel_elf-kern_disk.o kernel_elf-kern_dl.o kernel_elf-kern_file.o kernel_elf-kern_fs.o kernel_elf-kern_err.o kernel_elf-kern_misc.o kernel_elf-kern_mm.o kernel_elf-kern_loader.o kernel_elf-kern_rescue.o kernel_elf-kern_term.o kernel_elf-kern_time.o kernel_elf-kern_i386_dl.o kernel_elf-kern_parser.o kernel_elf-kern_partition.o kernel_elf-kern_i386_tsc.o kernel_elf-kern_i386_pit.o kernel_elf-kern_generic_rtc_get_time_ms.o kernel_elf-kern_generic_millisleep.o kernel_elf-kern_env.o kernel_elf-term_i386_pc_console.o kernel_elf-term_i386_pc_at_keyboard.o kernel_elf-term_i386_pc_vga_text.o kernel_elf-symlist.o
+ $(TARGET_CC) -o $@ kernel_elf-kern_i386_coreboot_startup.o kernel_elf-kern_i386_coreboot_init.o kernel_elf-kern_i386_multiboot_mmap.o kernel_elf-kern_main.o kernel_elf-kern_device.o kernel_elf-kern_disk.o kernel_elf-kern_dl.o kernel_elf-kern_file.o kernel_elf-kern_fs.o kernel_elf-kern_err.o kernel_elf-kern_misc.o kernel_elf-kern_mm.o kernel_elf-kern_loader.o kernel_elf-kern_rescue.o kernel_elf-kern_term.o kernel_elf-kern_time.o kernel_elf-kern_i386_dl.o kernel_elf-kern_parser.o kernel_elf-kern_partition.o kernel_elf-kern_i386_tsc.o kernel_elf-kern_i386_pit.o kernel_elf-kern_generic_rtc_get_time_ms.o kernel_elf-kern_generic_millisleep.o kernel_elf-kern_env.o kernel_elf-term_i386_pc_console.o kernel_elf-term_i386_pc_at_keyboard.o kernel_elf-term_i386_pc_vga_text.o kernel_elf-symlist.o $(TARGET_LDFLAGS) $(kernel_elf_LDFLAGS)
kernel_elf-kern_i386_coreboot_startup.o: kern/i386/coreboot/startup.S $(kern/i386/coreboot/startup.S_DEPENDENCIES)
$(TARGET_CC) -Ikern/i386/coreboot -I$(srcdir)/kern/i386/coreboot $(TARGET_CPPFLAGS) $(TARGET_CFLAGS) $(kernel_elf_CFLAGS) -MD -c -o $@ $<
$(TARGET_CC) -Ikern/i386/coreboot -I$(srcdir)/kern/i386/coreboot $(TARGET_CPPFLAGS) $(TARGET_CFLAGS) $(kernel_elf_CFLAGS) -MD -c -o $@ $<
-include kernel_elf-kern_i386_coreboot_init.d
-kernel_elf-kern_i386_coreboot_mmap.o: kern/i386/coreboot/mmap.c $(kern/i386/coreboot/mmap.c_DEPENDENCIES)
- $(TARGET_CC) -Ikern/i386/coreboot -I$(srcdir)/kern/i386/coreboot $(TARGET_CPPFLAGS) $(TARGET_CFLAGS) $(kernel_elf_CFLAGS) -MD -c -o $@ $<
--include kernel_elf-kern_i386_coreboot_mmap.d
+kernel_elf-kern_i386_multiboot_mmap.o: kern/i386/multiboot_mmap.c $(kern/i386/multiboot_mmap.c_DEPENDENCIES)
+ $(TARGET_CC) -Ikern/i386 -I$(srcdir)/kern/i386 $(TARGET_CPPFLAGS) $(TARGET_CFLAGS) $(kernel_elf_CFLAGS) -MD -c -o $@ $<
+-include kernel_elf-kern_i386_multiboot_mmap.d
kernel_elf-kern_main.o: kern/main.c $(kern/main.c_DEPENDENCIES)
$(TARGET_CC) -Ikern -I$(srcdir)/kern $(TARGET_CPPFLAGS) $(TARGET_CFLAGS) $(kernel_elf_CFLAGS) -MD -c -o $@ $<
# For kernel.elf.
kernel_elf_SOURCES = kern/i386/coreboot/startup.S \
kern/i386/coreboot/init.c \
- kern/i386/coreboot/mmap.c \
+ kern/i386/multiboot_mmap.c \
kern/main.c kern/device.c \
kern/disk.c kern/dl.c kern/file.c kern/fs.c kern/err.c \
kern/misc.c kern/mm.c kern/loader.c kern/rescue.c kern/term.c \
};
typedef struct grub_linuxbios_mem_region *mem_region_t;
+void grub_machine_mmap_init (void);
+
void EXPORT_FUNC(grub_machine_mmap_iterate)
(int NESTED_FUNC_ATTR (*hook) (grub_uint64_t, grub_uint64_t, grub_uint32_t));
grub_addr_t grub_os_area_addr;
grub_size_t grub_os_area_size;
-grub_size_t grub_lower_mem, grub_upper_mem;
/* FIXME: we need interrupts to do this right */
static grub_uint32_t grub_time_tics = 0;
{
/* Initialize the console as early as possible. */
grub_console_init ();
-
- grub_lower_mem = GRUB_MEMORY_MACHINE_LOWER_USABLE;
- grub_upper_mem = 0;
+ grub_at_keyboard_init ();
auto int NESTED_FUNC_ATTR heap_init (grub_uint64_t, grub_uint64_t, grub_uint32_t);
int NESTED_FUNC_ATTR heap_init (grub_uint64_t addr, grub_uint64_t size, grub_uint32_t type)
return 0;
}
+ grub_machine_mmap_init ();
grub_machine_mmap_iterate (heap_init);
/* This variable indicates size, not offset. */
grub_upper_mem -= GRUB_MEMORY_MACHINE_UPPER_START;
grub_tsc_init ();
- grub_at_keyboard_init ();
}
void
. = EXT_C(start) + GRUB_KERNEL_CPU_DATA_END
-#if 0
/*
* Support for booting GRUB from a Multiboot boot loader (e.g. GRUB itself).
*/
+ .p2align 2 /* force 4-byte alignment */
multiboot_header:
/* magic */
.long 0x1BADB002
/* flags */
- .long 0
+ .long MULTIBOOT_MEMORY_INFO
/* checksum */
- .long -0x1BADB002
-#endif
+ .long -0x1BADB002 - MULTIBOOT_MEMORY_INFO
codestart:
+ cmpl $MULTIBOOT_MAGIC2, %eax
+ jne 0f
+ movl %ebx, EXT_C(startup_multiboot_info)
+0:
+
/* initialize the stack */
movl $GRUB_MEMORY_MACHINE_PROT_STACK, %esp
--- /dev/null
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2002,2003,2004,2005,2006,2007,2008 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/machine/init.h>
+#include <grub/machine/memory.h>
+#include <grub/types.h>
+#include <grub/multiboot.h>
+#include <grub/err.h>
+#include <grub/misc.h>
+
+grub_size_t grub_lower_mem, grub_upper_mem;
+
+/* A pointer to the MBI in its initial location. */
+struct grub_multiboot_info *startup_multiboot_info;
+
+/* The MBI has to be copied to our BSS so that it won't be
+ overwritten. This is its final location. */
+static struct grub_multiboot_info kern_multiboot_info;
+
+/* Unfortunately we can't use heap at this point. But 32 looks like a sane
+ limit (used by memtest86). */
+static grub_uint8_t mmap_entries[sizeof (struct grub_multiboot_mmap_entry) * 32];
+
+void
+grub_machine_mmap_init ()
+{
+ if (! startup_multiboot_info)
+ grub_fatal ("Must be loaded using Multiboot specification (is this an old version of coreboot?)");
+
+ /* Move MBI to a safe place. */
+ grub_memmove (&kern_multiboot_info, startup_multiboot_info, sizeof (struct grub_multiboot_info));
+
+ if ((kern_multiboot_info.flags & MULTIBOOT_INFO_MEM_MAP) == 0)
+ grub_fatal ("Missing Multiboot memory information");
+
+ /* Move the memory map to a safe place. */
+ if (kern_multiboot_info.mmap_length > sizeof (mmap_entries))
+ {
+ grub_printf ("WARNING: Memory map size exceeds limit; it will be truncated\n");
+ kern_multiboot_info.mmap_length = sizeof (mmap_entries);
+ }
+ grub_memmove (mmap_entries, (void *) kern_multiboot_info.mmap_addr, kern_multiboot_info.mmap_length);
+ kern_multiboot_info.mmap_addr = (grub_uint32_t) mmap_entries;
+
+ if ((kern_multiboot_info.flags & MULTIBOOT_INFO_MEMORY) == 0)
+ {
+ grub_lower_mem = GRUB_MEMORY_MACHINE_LOWER_USABLE;
+ grub_upper_mem = 0;
+ }
+ else
+ {
+ grub_lower_mem = kern_multiboot_info.mem_lower * 1024;
+ grub_upper_mem = kern_multiboot_info.mem_upper * 1024;
+ }
+}
+
+void
+grub_machine_mmap_iterate (int NESTED_FUNC_ATTR (*hook) (grub_uint64_t, grub_uint64_t, grub_uint32_t))
+{
+ struct grub_multiboot_mmap_entry *entry = (void *) kern_multiboot_info.mmap_addr;
+
+ while ((unsigned long) entry < kern_multiboot_info.mmap_addr + kern_multiboot_info.mmap_length)
+ {
+ if (hook (entry->addr, entry->len, entry->type))
+ break;
+
+ entry = (void *) ((grub_addr_t) entry + entry->size + sizeof (entry->size));
+ }
+}
projects / grub2.git / commitdiff