loaders/bzimage/bzimage.h

/*
 * Copyright (c) 2011, Intel Corporation
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *    * Redistributions of source code must retain the above copyright
 *      notice, this list of conditions and the following disclaimer.
 *    * Redistributions in binary form must reproduce the above copyright
 *      notice, this list of conditions and the following disclaimer
 *      in the documentation and/or other materials provided with the
 *      distribution.
 *    * Neither the name of Intel Corporation nor the names of its
 *      contributors may be used to endorse or promote products
 *      derived from this software without specific prior written
 *      permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef __BZIMAGE_H__
#define __BZIMAGE_H__

#define BOOTSIG			0x1FE
#define SETUP_VERSION		0x206
#define SETUP_HDR		0x53726448	/* 0x53726448 == "HdrS" */

#define E820_RAM		1
#define E820_RESERVED		2
#define E820_ACPI		3
#define E820_NVS		4
#define E820_UNUSABLE		5

struct setup_header {
	UINT8 setup_secs;	/* Sectors for setup code */
	UINT16 root_flags;
	UINT32 sys_size;
	UINT16 ram_size;
	UINT16 video_mode;
	UINT16 root_dev;
	UINT16 signature;	/* Boot signature */
	UINT16 jump;
	UINT32 header;
	UINT16 version;
	UINT16 su_switch;
	UINT16 setup_seg;
	UINT16 start_sys;
	UINT16 kernel_ver;
	UINT8 loader_id;
	UINT8 load_flags;
	UINT16 movesize;
	UINT32 code32_start;	/* Start of code loaded high */
	UINT32 ramdisk_start;	/* Start of initial ramdisk */
	UINT32 ramdisk_len;	/* Lenght of initial ramdisk */
	UINT32 bootsect_kludge;
	UINT16 heap_end;
	UINT8 ext_loader_ver;  /* Extended boot loader version */
	UINT8 ext_loader_type; /* Extended boot loader ID */
	UINT32 cmd_line_ptr;   /* 32-bit pointer to the kernel command line */
	UINT32 ramdisk_max;    /* Highest legal initrd address */
	UINT32 kernel_alignment; /* Physical addr alignment required for kernel */
	UINT8 relocatable_kernel; /* Whether kernel is relocatable or not */
	UINT8 _pad2[3];
	UINT32 cmdline_size;
	UINT32 hardware_subarch;
	UINT64 hardware_subarch_data;
	UINT32 payload_offset;
	UINT32 payload_length;
	UINT64 setup_data;
	UINT64 pref_address;
	UINT32 init_size;
} __attribute__((packed));

struct efi_info {
	UINT32 efi_loader_signature;
	UINT32 efi_systab;
	UINT32 efi_memdesc_size;
	UINT32 efi_memdesc_version;
	UINT32 efi_memmap;
	UINT32 efi_memmap_size;
	UINT32 efi_systab_hi;
	UINT32 efi_memmap_hi;
};

struct e820_entry {
	UINT64 addr;		/* start of memory segment */
	UINT64 size;		/* size of memory segment */
	UINT32 type;		/* type of memory segment */
} __attribute__((packed));

struct screen_info {
        UINT8  orig_x;           /* 0x00 */
        UINT8  orig_y;           /* 0x01 */
        UINT16 ext_mem_k;        /* 0x02 */
        UINT16 orig_video_page;  /* 0x04 */
        UINT8  orig_video_mode;  /* 0x06 */
        UINT8  orig_video_cols;  /* 0x07 */
        UINT8  flags;            /* 0x08 */
        UINT8  unused2;          /* 0x09 */
        UINT16 orig_video_ega_bx;/* 0x0a */
        UINT16 unused3;          /* 0x0c */
        UINT8  orig_video_lines; /* 0x0e */
        UINT8  orig_video_isVGA; /* 0x0f */
        UINT16 orig_video_points;/* 0x10 */

	/* VESA graphic mode -- linear frame buffer */
        UINT16 lfb_width;        /* 0x12 */
        UINT16 lfb_height;       /* 0x14 */
        UINT16 lfb_depth;        /* 0x16 */
        UINT32 lfb_base;         /* 0x18 */
        UINT32 lfb_size;         /* 0x1c */
        UINT16 cl_magic, cl_offset; /* 0x20 */
	UINT16 lfb_linelength;   /* 0x24 */
        UINT8  red_size;         /* 0x26 */
        UINT8  red_pos;          /* 0x27 */
        UINT8  green_size;       /* 0x28 */
	UINT8  green_pos;        /* 0x29 */
        UINT8  blue_size;        /* 0x2a */
	UINT8  blue_pos;         /* 0x2b */
        UINT8  rsvd_size;        /* 0x2c */
        UINT8  rsvd_pos;         /* 0x2d */
        UINT16 vesapm_seg;       /* 0x2e */
	UINT16 vesapm_off;       /* 0x30 */
        UINT16 pages;            /* 0x32 */
        UINT16 vesa_attributes;  /* 0x34 */
        UINT32 capabilities;     /* 0x36 */
        UINT8  _reserved[6];     /* 0x3a */
} __attribute__((packed));

struct boot_params {
	struct screen_info screen_info;
	UINT8 apm_bios_info[0x14];
	UINT8 _pad2[4];
	UINT64 tboot_addr;
	UINT8 ist_info[0x10];
	UINT8 _pad3[16];
	UINT8 hd0_info[16];
	UINT8 hd1_info[16];
	UINT8 sys_desc_table[0x10];
	UINT8 olpc_ofw_header[0x10];
	UINT8 _pad4[128];
	UINT8 edid_info[0x80];
	struct efi_info efi_info;
	UINT32 alt_mem_k;
	UINT32 scratch;
	UINT8 e820_entries;
	UINT8 eddbuf_entries;
	UINT8 edd_mbr_sig_buf_entries;
	UINT8 _pad6[6];
	struct setup_header hdr;
	UINT8 _pad7[0x290-0x1f1-sizeof(struct setup_header)];
	UINT32 edd_mbr_sig_buffer[16];
	struct e820_entry e820_map[128];
	UINT8 _pad8[48];
	UINT8 eddbuf[0x1ec];
	UINT8 _pad9[276];
};

typedef struct {
	UINT16 limit;
	UINT64 *base;
} __attribute__((packed)) dt_addr_t;

extern EFI_STATUS setup_graphics(struct boot_params *buf);

#endif /* __BZIMAGE_H__ */