- Initial checkin of the freebios2 tree

git-svn-id: svn://svn.coreboot.org/coreboot/trunk@784 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

1 files changed, 89 insertions, 0 deletions

diff --git a/src/include/boot/elf_boot.h b/src/include/boot/elf_boot.h
new file mode 100644
index 0000000000..ee6750d293
--- /dev/null
+++ b/src/include/boot/elf_boot.h
@@ -0,0 +1,89 @@
+#ifndef ELF_BOOT_H 
+#define ELF_BOOT_H 
+
+#include <stdint.h>
+
+/* This defines the structure of a table of parameters useful for ELF
+ * bootable images.  These parameters are all passed and generated
+ * by the bootloader to the booted image.  For simplicity and
+ * consistency the Elf Note format is reused.
+ *
+ * All of the information must be Position Independent Data.
+ * That is it must be safe to relocate the whole ELF boot parameter
+ * block without changing the meaning or correctnes of the data.
+ * Additionally it must be safe to permute the order of the ELF notes
+ * to any possible permutation without changing the meaning or correctness
+ * of the data.
+ *
+ */
+
+#define ELF_HEAD_SIZE		(8*1024)
+#define ELF_BOOT_MAGIC		0x0E1FB007
+
+typedef uint16_t Elf_Half;
+typedef uint32_t Elf_Word;
+typedef uint64_t Elf_Xword;
+
+typedef struct
+{
+	Elf_Word b_signature; /* "0x0E1FB007" */
+	Elf_Word b_size;
+	Elf_Half b_checksum;
+	Elf_Half b_records;
+} Elf_Bhdr;
+
+typedef struct 
+{
+	Elf_Word n_namesz;		/* Length of the note's name.  */
+	Elf_Word n_descsz;		/* Length of the note's descriptor.  */
+	Elf_Word n_type;		/* Type of the note.  */
+} Elf_Nhdr;
+
+
+/* For standard notes n_namesz must be zero */
+/* All of the following standard note types provide a single null
+ * terminated string in the descriptor.
+ */
+#define EBN_FIRMWARE_TYPE	0x00000001
+/* On platforms that support multiple classes of firmware this field
+ * specifies the class of firmware you are loaded under.
+ */
+#define EBN_BOOTLOADER_NAME	0x00000002
+/* This specifies just the name of the bootloader for easy comparison */
+#define EBN_BOOTLOADER_VERSION	0x00000003
+/* This specifies the version of the bootlader */
+#define EBN_COMMAND_LINE	0x00000004
+/* This specifies a command line that can be set by user interaction,
+ * and is provided as a free form string to the loaded image.
+ */
+
+
+/* Standardized Elf image notes for booting... The name for all of these is ELFBoot */
+
+#define ELF_NOTE_BOOT		"ELFBoot"
+
+#define EIN_PROGRAM_NAME	0x00000001
+/* The program in this ELF file */
+#define EIN_PROGRAM_VERSION	0x00000002
+/* The version of the program in this ELF file */
+#define EIN_PROGRAM_CHECKSUM	0x00000003
+/* ip style checksum of the memory image. */
+
+
+/* Linux image notes for booting... The name for all of these is Linux */
+
+#define LINUX_NOTE_BOOT		"Linux"
+
+#define LIN_COMMAND_LINE	0x00000001
+/* The command line to pass to the loaded kernel. */
+#define LIN_ROOT_DEV		0x00000002
+/* The root dev to pass to the loaded kernel. */
+#define LIN_RAMDISK_FLAGS	0x00000003
+/* Various old ramdisk flags */
+#define LIN_INITRD_START	0x00000004
+/* Start of the ramdisk in bytes */
+#define LIN_INITRD_SIZE		0x00000005
+/* Size of the ramdisk in bytes */
+
+
+#endif /* ELF_BOOT_H */