Add a (b)zImage parser to cbfstool
In the great tradition of LinuxBIOS this allows adding
a kernel as payload. add-payload is extended to also
allow adding an initial ramdisk (-I filename) and a
command line (-C console=ttyS0).
Change-Id: Iaca499a98b0adf0134e78d6bf020b6531a626aaa
Signed-off-by: Patrick Georgi <patrick.georgi@secunet.com>
Signed-off-by: Patrick Georgi <patrick@georgi-clan.de>
Reviewed-on: http://review.coreboot.org/3302
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
diff --git a/util/cbfstool/linux.h b/util/cbfstool/linux.h
new file mode 100644
index 0000000..20837e3
--- /dev/null
+++ b/util/cbfstool/linux.h
@@ -0,0 +1,191 @@
+/*
+ * This file is part of coreboot..
+ *
+ * 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; version 2 of the License.
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/*
+ * Linux/i386 loader
+ * Supports bzImage, zImage and Image format.
+ *
+ * Based on work by Steve Gehlbach.
+ * Portions are taken from mkelfImage.
+ *
+ * 2003-09 by SONE Takeshi
+ */
+
+#include <stdint.h>
+
+typedef uint8_t u8;
+typedef uint16_t u16;
+typedef uint32_t u32;
+typedef uint64_t u64;
+
+#define LINUX_PARAM_LOC 0x90000
+#define COMMAND_LINE_LOC 0x91000
+#define GDT_LOC 0x92000
+#define STACK_LOC 0x93000
+
+#define E820MAX 32 /* number of entries in E820MAP */
+struct e820entry {
+ unsigned long long addr; /* start of memory segment */
+ unsigned long long size; /* size of memory segment */
+ unsigned long type; /* type of memory segment */
+#define E820_RAM 1
+#define E820_RESERVED 2
+#define E820_ACPI 3 /* usable as RAM once ACPI tables have been read */
+#define E820_NVS 4
+};
+
+/* The header of Linux/i386 kernel */
+struct linux_header {
+ u8 reserved1[0x1f1]; /* 0x000 */
+ u8 setup_sects; /* 0x1f1 */
+ u16 root_flags; /* 0x1f2 */
+ u32 syssize; /* 0x1f4 (2.04+) */
+ u8 reserved2[2]; /* 0x1f8 */
+ u16 vid_mode; /* 0x1fa */
+ u16 root_dev; /* 0x1fc */
+ u16 boot_sector_magic; /* 0x1fe */
+ /* 2.00+ */
+ u8 reserved3[2]; /* 0x200 */
+ u8 header_magic[4]; /* 0x202 */
+ u16 protocol_version; /* 0x206 */
+ u32 realmode_swtch; /* 0x208 */
+ u16 start_sys; /* 0x20c */
+ u16 kver_addr; /* 0x20e */
+ u8 type_of_loader; /* 0x210 */
+ u8 loadflags; /* 0x211 */
+ u16 setup_move_size; /* 0x212 */
+ u32 code32_start; /* 0x214 */
+ u32 ramdisk_image; /* 0x218 */
+ u32 ramdisk_size; /* 0x21c */
+ u8 reserved4[4]; /* 0x220 */
+ /* 2.01+ */
+ u16 heap_end_ptr; /* 0x224 */
+ u8 reserved5[2]; /* 0x226 */
+ /* 2.02+ */
+ u32 cmd_line_ptr; /* 0x228 */
+ /* 2.03+ */
+ u32 initrd_addr_max; /* 0x22c */
+ /* 2.05+ */
+ u32 kernel_alignment; /* 0x230 */
+ u8 relocatable_kernel; /* 0x234 */
+ u8 min_alignment; /* 0x235 (2.10+) */
+ u8 reserved6[2]; /* 0x236 */
+ /* 2.06+ */
+ u32 cmdline_size; /* 0x238 */
+ /* 2.07+ */
+ u32 hardware_subarch; /* 0x23c */
+ u64 hardware_subarch_data;/* 0x240 */
+ /* 2.08+ */
+ u32 payload_offset; /* 0x248 */
+ u32 payload_length; /* 0x24c */
+ /* 2.09+ */
+ u64 setup_data; /* 0x250 */
+ /* 2.10+ */
+ u64 pref_address; /* 0x258 */
+ u32 init_size; /* 0x260 */
+} __attribute__ ((packed));
+
+/* Paramters passed to 32-bit part of Linux
+ * This is another view of the structure above.. */
+struct linux_params {
+ u8 orig_x; /* 0x00 */
+ u8 orig_y; /* 0x01 */
+ u16 ext_mem_k; /* 0x02 -- EXT_MEM_K sits here */
+ u16 orig_video_page; /* 0x04 */
+ u8 orig_video_mode; /* 0x06 */
+ u8 orig_video_cols; /* 0x07 */
+ u16 unused2; /* 0x08 */
+ u16 orig_video_ega_bx; /* 0x0a */
+ u16 unused3; /* 0x0c */
+ u8 orig_video_lines; /* 0x0e */
+ u8 orig_video_isVGA; /* 0x0f */
+ u16 orig_video_points; /* 0x10 */
+
+ /* VESA graphic mode -- linear frame buffer */
+ u16 lfb_width; /* 0x12 */
+ u16 lfb_height; /* 0x14 */
+ u16 lfb_depth; /* 0x16 */
+ u32 lfb_base; /* 0x18 */
+ u32 lfb_size; /* 0x1c */
+ u16 cl_magic; /* 0x20 */
+#define CL_MAGIC_VALUE 0xA33F
+ u16 cl_offset; /* 0x22 */
+ u16 lfb_linelength; /* 0x24 */
+ u8 red_size; /* 0x26 */
+ u8 red_pos; /* 0x27 */
+ u8 green_size; /* 0x28 */
+ u8 green_pos; /* 0x29 */
+ u8 blue_size; /* 0x2a */
+ u8 blue_pos; /* 0x2b */
+ u8 rsvd_size; /* 0x2c */
+ u8 rsvd_pos; /* 0x2d */
+ u16 vesapm_seg; /* 0x2e */
+ u16 vesapm_off; /* 0x30 */
+ u16 pages; /* 0x32 */
+ u8 reserved4[12]; /* 0x34 -- 0x3f reserved for future expansion */
+
+ //struct apm_bios_info apm_bios_info; /* 0x40 */
+ u8 apm_bios_info[0x40];
+ //struct drive_info_struct drive_info; /* 0x80 */
+ u8 drive_info[0x20];
+ //struct sys_desc_table sys_desc_table; /* 0xa0 */
+ u8 sys_desc_table[0x140];
+ u32 alt_mem_k; /* 0x1e0 */
+ u8 reserved5[4]; /* 0x1e4 */
+ u8 e820_map_nr; /* 0x1e8 */
+ u8 reserved6[9]; /* 0x1e9 */
+ u16 mount_root_rdonly; /* 0x1f2 */
+ u8 reserved7[4]; /* 0x1f4 */
+ u16 ramdisk_flags; /* 0x1f8 */
+#define RAMDISK_IMAGE_START_MASK 0x07FF
+#define RAMDISK_PROMPT_FLAG 0x8000
+#define RAMDISK_LOAD_FLAG 0x4000
+ u8 reserved8[2]; /* 0x1fa */
+ u16 orig_root_dev; /* 0x1fc */
+ u8 reserved9[1]; /* 0x1fe */
+ u8 aux_device_info; /* 0x1ff */
+ u8 reserved10[2]; /* 0x200 */
+ u8 param_block_signature[4]; /* 0x202 */
+ u16 param_block_version; /* 0x206 */
+ u8 reserved11[8]; /* 0x208 */
+ u8 loader_type; /* 0x210 */
+#define LOADER_TYPE_LOADLIN 1
+#define LOADER_TYPE_BOOTSECT_LOADER 2
+#define LOADER_TYPE_SYSLINUX 3
+#define LOADER_TYPE_ETHERBOOT 4
+#define LOADER_TYPE_KERNEL 5
+ u8 loader_flags; /* 0x211 */
+ u8 reserved12[2]; /* 0x212 */
+ u32 kernel_start; /* 0x214 */
+ u32 initrd_start; /* 0x218 */
+ u32 initrd_size; /* 0x21c */
+ u8 reserved12_5[8]; /* 0x220 */
+ u32 cmd_line_ptr; /* 0x228 */
+ u32 initrd_addr_max; /* 0x22c */
+ u32 kernel_alignment; /* 0x230 */
+ u8 relocatable_kernel; /* 0x234 */
+ u8 reserved13[155]; /* 0x22c */
+ struct e820entry e820_map[E820MAX]; /* 0x2d0 */
+ u8 reserved16[688]; /* 0x550 */
+#define COMMAND_LINE_SIZE 256
+ /* Command line is copied here by 32-bit i386/kernel/head.S.
+ * So I will follow the boot protocol, rather than putting it
+ * directly here. --ts1 */
+ u8 command_line[COMMAND_LINE_SIZE]; /* 0x800 */
+ u8 reserved17[1792]; /* 0x900 - 0x1000 */
+};
+