[PATCH] coreboot-v2: Add multiboot support

Signed-off-by: Robert Millan <rmh@aybabtu.com>
Acked-by: Jordan Crouse <jordan@cosmicpneguin.net>
Acked-by: Peter Stuge <peter@stuge.se>


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3745 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

1 files changed, 175 insertions, 0 deletions

diff --git a/src/include/cpu/x86/multiboot.h b/src/include/cpu/x86/multiboot.h
new file mode 100644
index 0000000000..74fac15153
--- /dev/null
+++ b/src/include/cpu/x86/multiboot.h
@@ -0,0 +1,175 @@
+/* multiboot.h - multiboot header file. */
+/*
+ *  Copyright (C) 2003  Free Software Foundation, Inc.
+ *  Copyright (C) 2008  Robert Millan
+ *
+ *  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, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef MULTIBOOT_H
+#define MULTIBOOT_H
+
+#include <stdint.h>
+
+/* How many bytes from the start of the file we search for the header.  */
+#define MB_SEARCH                 8192
+
+/* The magic field should contain this.  */
+#define MB_MAGIC                  0x1BADB002
+
+/* This should be in %eax.  */
+#define MB_MAGIC2                 0x2BADB002
+
+/* The bits in the required part of flags field we don't support.  */
+#define MB_UNSUPPORTED            0x0000fffc
+
+/* Alignment of multiboot modules.  */
+#define MB_MOD_ALIGN              0x00001000
+
+/*
+ * Flags set in the 'flags' member of the multiboot header.
+ */
+
+/* Align all boot modules on i386 page (4KB) boundaries.  */
+#define MB_PAGE_ALIGN		0x00000001
+
+/* Must pass memory information to OS.  */
+#define MB_MEMORY_INFO		0x00000002
+
+/* Must pass video information to OS.  */
+#define MB_VIDEO_MODE		0x00000004
+
+/* This flag indicates the use of the address fields in the header.  */
+#define MB_AOUT_KLUDGE		0x00010000
+
+/*
+ *  Flags to be set in the 'flags' member of the multiboot info structure.
+ */
+
+/* is there basic lower/upper memory information? */
+#define MB_INFO_MEMORY		0x00000001
+/* is there a boot device set? */
+#define MB_INFO_BOOTDEV		0x00000002
+/* is the command-line defined? */
+#define MB_INFO_CMDLINE		0x00000004
+/* are there modules to do something with? */
+#define MB_INFO_MODS		0x00000008
+
+/* These next two are mutually exclusive */
+
+/* is there a symbol table loaded? */
+#define MB_INFO_AOUT_SYMS		0x00000010
+/* is there an ELF section header table? */
+#define MB_INFO_ELF_SHDR		0x00000020
+
+/* is there a full memory map? */
+#define MB_INFO_MEM_MAP		0x00000040
+
+/* Is there drive info?  */
+#define MB_INFO_DRIVE_INFO		0x00000080
+
+/* Is there a config table?  */
+#define MB_INFO_CONFIG_TABLE	0x00000100
+
+/* Is there a boot loader name?  */
+#define MB_INFO_BOOT_LOADER_NAME	0x00000200
+
+/* Is there a APM table?  */
+#define MB_INFO_APM_TABLE		0x00000400
+
+/* Is there video information?  */
+#define MB_INFO_VIDEO_INFO		0x00000800
+
+struct multiboot_header {
+	/* Must be MB_MAGIC - see above.  */
+	uint32_t magic;
+
+	/* Feature flags.  */
+	uint32_t flags;
+
+	/* The above fields plus this one must equal 0 mod 2^32. */
+	uint32_t checksum;
+
+	/* These are only valid if MB_AOUT_KLUDGE is set.  */
+	uint32_t header_addr;
+	uint32_t load_addr;
+	uint32_t load_end_addr;
+	uint32_t bss_end_addr;
+	uint32_t entry_addr;
+
+	/* These are only valid if MB_VIDEO_MODE is set.  */
+	uint32_t mode_type;
+	uint32_t width;
+	uint32_t height;
+	uint32_t depth;
+};
+
+struct multiboot_info {
+	/* Multiboot info version number */
+	uint32_t flags;
+
+	/* Available memory from BIOS */
+	uint32_t mem_lower;
+	uint32_t mem_upper;
+
+	/* "root" partition */
+	uint32_t boot_device;
+
+	/* Kernel command line */
+	uint32_t cmdline;
+
+	/* Boot-Module list */
+	uint32_t mods_count;
+	uint32_t mods_addr;
+
+	uint32_t syms[4];
+
+	/* Memory Mapping buffer */
+	uint32_t mmap_length;
+	uint32_t mmap_addr;
+
+	/* Drive Info buffer */
+	uint32_t drives_length;
+	uint32_t drives_addr;
+
+	/* ROM configuration table */
+	uint32_t config_table;
+
+	/* Boot Loader Name */
+	uint32_t boot_loader_name;
+
+	/* APM table */
+	uint32_t apm_table;
+
+	/* Video */
+	uint32_t vbe_control_info;
+	uint32_t vbe_mode_info;
+	uint16_t vbe_mode;
+	uint16_t vbe_interface_seg;
+	uint16_t vbe_interface_off;
+	uint16_t vbe_interface_len;
+};
+
+struct multiboot_mmap_entry {
+	uint32_t size;
+	uint64_t addr;
+	uint64_t len;
+	uint32_t type;
+} __attribute__ ((packed));
+
+extern struct multiboot_info *mbi;
+
+unsigned long  write_multiboot_info(unsigned long, unsigned long, unsigned long, unsigned long);
+
+#endif