--- /dev/null
+/*
+ * Copyright (C) 2001-2003 Hewlett-Packard Co.
+ * Contributed by Stephane Eranian <eranian@hpl.hp.com>
+ * Contributed by Mike Johnston <johnston@intel.com>
+ * Contributed by Chris Ahna <christopher.j.ahna@intel.com>
+ * Contributed by Fenghua Yu <fenghua.yu@intel.com>
+ * Contributed by Bibo Mao <bibo.mao@intel.com>
+ * Contributed by Chandramouli Narayanan <mouli@linux.intel.com>
+ *
+ * This file is part of the ELILO, the EFI Linux boot loader.
+ *
+ * ELILO 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, or (at your option)
+ * any later version.
+ *
+ * ELILO 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 ELILO; see the file COPYING. If not, write to the Free
+ * Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ *
+ * Please check out the elilo.txt for complete documentation on how
+ * to use this program.
+ */
+
+/*
+ * This file is used to define all the x86_64-specific data structures
+ * and constant used by the generic ELILO
+ */
+#ifndef __ELILO_SYSDEPS_X86_64_H__
+#define __ELILO_SYSDEPS_X86_64_H__
+
+#define ELILO_ARCH "x86_64" /* ASCII string */
+#define PADDR_MASK 0xfffffff
+
+/* for now use library versions */
+#define Memset(a,v,n) SetMem((a),(n),(v))
+#define Memcpy(a,b,n) CopyMem((a),(b),(n))
+
+/* Put initrd to far away from kernel image to avoid conflict.
+ * May need to adjust this number if it is not big enough.
+ */
+#define INITRD_START (50*1024*1024)
+
+/*
+ * This version must match the one in the kernel.
+ *
+ * This table was put together using information from the
+ * following Linux kernel source files:
+ * linux/include/tty.h
+ * linux/arch/i386/kernel/setup.c
+ * linux/arch/i386/boot/bootsect.S
+ * linux/arch/i386/boot/setup.S
+ * linux/arch/i386/boot/video.S
+ *
+ * New fields in this structure for EFI and ELILO are:
+ * efi_loader_sig
+ * efi_st_addr
+ *
+ * A new bit, LDRFLAG_BOOT_PARAM_RELOC, in the loader_flags
+ * field is also defined in this file.
+ */
+
+#pragma pack(1)
+
+/* Definitions for converting EFI memory map to E820 map for Linux
+ * These definitions are from include/linux/asm-x86_64/e820.h
+ * The structure x86_64_boot_params below is updated to accommodate E820 map
+ * EFI memory map is converted to E820 map in this structure and passed
+ * to Linux. This way the OS does not need to do the conversion.
+ */
+#define E820_RAM 1
+#define E820_RESERVED 2
+#define E820_ACPI 3
+#define E820_NVS 4
+#define E820_EXEC_CODE 5
+#define E820_MAX 128
+
+struct e820entry {
+ UINT64 addr; /* start of memory segment */
+ UINT64 size; /* size of memory segment */
+ UINT32 type; /* type of memory segment */
+} __attribute__((packed));
+
+
+typedef union x86_64_boot_params {
+ UINT8 raw[0x2000];
+ struct {
+/* Cursor position before passing control to kernel. */
+/* 0x00 */ UINT8 orig_cursor_col; /* LDR */
+/* 0x01 */ UINT8 orig_cursor_row; /* LDR */
+
+/* Available contiguous extended memory in KB. */
+/* 0x02 */ UINT16 ext_mem_k; /* LDR */
+
+/* Video page, mode and screen width before passing control to kernel. */
+/* 0x04 */ UINT16 orig_video_page; /* LDR */
+/* 0x06 */ UINT8 orig_video_mode; /* LDR */
+/* 0x07 */ UINT8 orig_video_cols; /* LDR */
+
+/* 0x08 */ UINT16 unused_1; /* unused */
+
+/* %%TBD */
+/* 0x0A */ UINT16 orig_ega_bx; /* LDR */
+
+/* 0x0C */ UINT16 unused_2; /* unused */
+
+/* Screen height before passing control to kernel. */
+/* 0x0E */ UINT8 orig_video_rows; /* LDR */
+
+/* %%TBD */
+/* 0x0F */ UINT8 is_vga; /* LDR */
+/* 0x10 */ UINT16 orig_video_points; /* LDR */
+
+/* %%TBD */
+/* 0x12 */ UINT16 lfb_width; /* LDR */
+/* 0x14 */ UINT16 lfb_height; /* LDR */
+/* 0x16 */ UINT16 lfb_depth; /* LDR */
+/* 0x18 */ UINT32 lfb_base; /* LDR */
+/* 0x1C */ UINT32 lfb_size; /* LDR */
+
+/* Offset of command line (from start of ia32_boot_param struct). */
+/* The command line magik number must be set for the kernel setup */
+/* code to use the command line offset. */
+/* 0x20 */ UINT16 cmdline_magik; /* LDR */
+#define CMDLINE_MAGIK 0xA33F
+/* 0x22 */ UINT16 cmdline_offset; /* LDR */
+
+/* %%TBD */
+/* 0x24 */ UINT16 lfb_line_len; /* LDR */
+
+/* %%TBD */
+/* 0x26 */ UINT8 lfb_red_size; /* LDR */
+/* 0x27 */ UINT8 lfb_red_pos; /* LDR */
+/* 0x28 */ UINT8 lfb_green_size; /* LDR */
+/* 0x29 */ UINT8 lfb_green_pos; /* LDR */
+/* 0x2A */ UINT8 lfb_blue_size; /* LDR */
+/* 0x2B */ UINT8 lfb_blue_pos; /* LDR */
+/* 0x2C */ UINT8 lfb_rsvd_size; /* LDR */
+/* 0x2D */ UINT8 lfb_rsvd_pos; /* LDR */
+
+/* %%TBD */
+/* 0x2E */ UINT16 vesa_seg; /* LDR */
+/* 0x30 */ UINT16 vesa_off; /* LDR */
+
+/* %%TBD */
+/* 0x32 */ UINT16 lfb_pages; /* LDR */
+/* 0x34 */ UINT8 lfb_reserved[0x0C]; /* reserved */
+
+/* %%TBD */
+/* 0x40 */ UINT16 apm_bios_ver; /* LDR */
+#define NO_APM_BIOS 0x0000
+
+/* %%TBD */
+/* 0x42 */ UINT16 bios_code_seg; /* LDR */
+/* 0x44 */ UINT32 bios_entry_point; /* LDR */
+/* 0x48 */ UINT16 bios_code_seg16; /* LDR */
+/* 0x4A */ UINT16 bios_data_seg; /* LDR */
+
+/* %%TBD */
+/* 0x4C */ UINT16 apm_bios_flags; /* LDR */
+#define NO_32BIT_APM_MASK 0xFFFD
+
+/* %%TBD */
+/* 0x4E */ UINT32 bios_code_len; /* LDR */
+/* 0x52 */ UINT16 bios_data_len; /* LDR */
+
+/* 0x54 */ UINT8 unused_3[0x2C]; /* unused */
+
+/* %%TBD */
+/* 0x80 */ UINT8 hd0_info[0x10]; /* LDR */
+/* 0x90 */ UINT8 hd1_info[0x10]; /* LDR */
+
+/* %%TBD */
+/* 0xA0 */ UINT16 mca_info_len; /* LDR */
+/* 0xA2 */ UINT8 mca_info_buf[0x10]; /* LDR */
+
+/* 0xB2 */ UINT8 unused_4[0x106]; /* unused */
+
+/* Address of the EFI system table. */
+/* 0x1B8 */ UINT64 efi_sys_tbl; /* LDR */
+
+/* EFI boot loader signature. */
+/* 0x1C0 */ UINT8 efi_loader_sig[4]; /* LDR */
+#define EFI_LOADER_SIG "EFIL"
+
+/* EFI memory descriptor size. */
+/* 0x1C4 */ UINT32 efi_mem_desc_size; /* LDR */
+
+/* EFI memory descriptor version. */
+/* 0x1C8 */ UINT32 efi_mem_desc_ver; /* LDR */
+
+/* Address & size of EFI memory map. */
+/* 0x1CC */ UINT32 efi_mem_map_size; /* LDR */
+/* 0x1D0 */ UINT64 efi_mem_map; /* LDR */
+
+/* Address & size of loader. */
+/* 0x1D8 */ UINT32 loader_start; /* LDR */
+/* 0x1DC */ UINT32 loader_size; /* LDR */
+
+/* Available contiguous extended memory in KB. */
+/* 0x1E0 */ UINT32 alt_mem_k; /* LDR */
+
+/* 0x1E4 */ UINT32 unused_51; /* unused */
+/* 0x1E8 */ UINT8 e820_nrmap;
+/* 0x1E9 */ UINT32 unused_52[2]; /* unused */
+
+/* Size of setup code in sectors (1 sector == 512 bytes). */
+/* 0x1F1 */ UINT8 setup_sectors; /* BLD */
+
+/* %%TBD */
+/* 0x1F2 */ UINT16 mount_root_rdonly; /* BLD */
+
+/* %%TBD */
+/* 0x1F4 */ UINT16 sys_size; /* BLD */
+
+/* %%TBD */
+/* 0x1F6 */ UINT16 swap_dev; /* BLD */
+
+/* %%TBD */
+/* 0x1F8 */ UINT16 ramdisk_flags; /* BLD */
+#define RAMDISK_PROMPT 0x8000
+#define RAMDISK_LOAD 0x4000
+
+/* %%TBD */
+/* 0x1FA */ UINT16 video_mode_flag; /* BLD */
+
+/* %%TBD */
+/* 0x1FC */ UINT16 orig_root_dev; /* BLD */
+
+/* 0x1FE */ UINT8 unused_6; /* unused */
+
+/* %%TBD */
+/* 0x1FF */ UINT8 aux_dev_info; /* LDR */
+#define NO_MOUSE 0x00
+#define FOUND_MOUSE 0xAA
+
+/* Jump past setup data (not used in EFI). */
+/* 0x200 */ UINT16 jump; /* BLD */
+
+/* Setup data signature. */
+/* 0x202 */ UINT8 setup_sig[4]; /* BLD */
+#define SETUP_SIG "HdrS"
+
+/* %%TBD */
+/* 0x206 */ UINT8 hdr_minor; /* BLD */
+/* 0x207 */ UINT8 hdr_major; /* BLD */
+
+/* %%TBD */
+/* 0x208 */ UINT32 rm_switch; /* LDD */
+
+/* %%TBD */
+/* 0x20C */ UINT16 start_sys_seg; /* BLD */
+
+/* %%TBD */
+/* 0x20E */ UINT16 kernel_verstr_offset; /* BLD */
+
+/* Loader type & version. */
+/* 0x210 */ UINT8 loader_type; /* LDR */
+#define LDRTYPE_ELILO 0x50 /* 5?h == elilo */
+ /* ?0h == revision */
+
+/* 0x211 */ UINT8 loader_flags; /* BLD and LDR */
+#define LDRFLAG_CAN_USE_HEAP 0x80
+#define LDRFLAG_BOOT_PARAM_RELOC 0x40
+
+/* %%TBD */
+/* 0x212 */ UINT16 setup_move_size; /* BLD */
+
+/* %%TBD */
+/* 0x214 */ UINT32 kernel_start; /* LDR */
+
+/* %%TBD */
+/* 0x218 */ UINT32 initrd_start; /* LDR */
+/* 0x21C */ UINT32 initrd_size; /* LDR */
+
+/* %%TBD */
+/* 0x220 */ UINT32 bootsect_helper; /* BLD */
+
+/* %%TBD */
+/* 0x224 */ UINT16 heap_end_ptr; /* LDR */
+
+/* %%TBD */
+/* 0x226 */ UINT16 unused_7; /* LDR */
+
+/* 0x228 */ UINT32 cmdline_addr; /* LDR */
+/* 0x22C */ UINT32 unused_8[41];
+/* 0x2D0 */ UINT8 e820_map[2560];
+ } s;
+} boot_params_t;
+#pragma pack()
+
+/*
+ * The stuff below here is for jumping to the kernel.
+ */
+
+/*
+ * Some macros to copy and set memory after EFI has been
+ * stopped.
+ */
+
+#define MEMCPY(to, from, cnt) { \
+ UINT8 *t = (UINT8 *)(to); \
+ UINT8 *f = (UINT8 *)(from); \
+ UINTN n = cnt; \
+ if (t && f && n) { \
+ while (n--) { \
+ *t++ = *f++; \
+ } \
+ } \
+}
+
+#define MEMSET(ptr, size, val) { \
+ UINT8 *p = (UINT8 *)(ptr); \
+ UINTN n = (UINTN)(size); \
+ UINT8 v = (UINT8)(val); \
+ if (p && n) { \
+ while (n--) { \
+ *p++ = v; \
+ } \
+ } \
+}
+
+/*
+ * Descriptor table pointer format.
+ */
+#pragma pack(1)
+typedef struct {
+ UINT16 limit;
+ UINT64 base;
+} dt_addr_t;
+#pragma pack()
+
+extern UINTN high_base_mem;
+extern UINTN high_ext_mem;
+
+extern boot_params_t *param_start;
+extern UINTN param_size;
+
+extern VOID *kernel_start;
+extern UINTN kernel_size;
+
+extern VOID *initrd_start;
+extern UINTN initrd_size;
+
+extern dt_addr_t gdt_addr;
+extern dt_addr_t idt_addr;
+
+extern UINT16 init_gdt[];
+extern UINTN sizeof_init_gdt;
+
+extern UINT8 rmswitch_image[];
+extern UINTN rmswitch_size;
+
+extern INTN x86_64_use_legacy_free_boot();
+
+/*
+ * How to jump to kernel code
+ */
+
+
+static inline void
+start_kernel(VOID *kentry, boot_params_t *bp)
+{
+ struct {
+ UINT32 kernel_entry;
+ UINT16 kernel_cs;
+ } jumpvector;
+ UINTN njump;
+ VOID *jump_start;
+
+ /*
+ * Disable interrupts.
+ */
+ asm volatile ( "cli" : : );
+
+ /*
+ * Relocate initrd, if present.
+ */
+
+ if (bp->s.initrd_start) {
+ MEMCPY(INITRD_START, bp->s.initrd_start, bp->s.initrd_size);
+ bp->s.initrd_start = INITRD_START;
+ }
+ /*
+ * Copy boot sector, setup data and command line
+ * to final resting place. We need to copy
+ * BOOT_PARAM_MEMSIZE bytes.
+ */
+
+ MEMCPY(high_base_mem, bp, 0x4000);
+
+ /*
+ * Initialize Linux GDT.
+ */
+
+ MEMSET(gdt_addr.base, gdt_addr.limit, 0);
+ MEMCPY(gdt_addr.base, init_gdt, sizeof_init_gdt);
+
+// fixme: why x86_64_use_legacy_free_boot() goes to _relocate?
+#if 0
+ if (! x86_64_use_legacy_free_boot()) {
+
+ /*
+ * Copy our real mode transition code to 0x7C00.
+ */
+
+ MEMCPY(0x7C00, rmswitch_image, rmswitch_size);
+
+ asm volatile ( "mov $0x7C00, %%rbx" : : );
+ asm volatile ( "jmp *%%rbx" : : );
+ }
+#endif
+
+ /*
+ * Load descriptor table pointers.
+ */
+
+ asm volatile ( "lidt %0" : : "m" (idt_addr) );
+ asm volatile ( "lgdt %0" : : "m" (gdt_addr) );
+
+ /*
+ * rsi := address of boot sector and setup data
+ */
+
+ asm volatile ( "mov %0, %%rsi" : : "m" (high_base_mem) );
+
+ /*
+ * Jump to kernel entry point.
+ */
+ jumpvector.kernel_entry=kentry;
+ jumpvector.kernel_cs=0x10;
+ njump = &jumpvector;
+ jump_start = (VOID *)&jumpvector;
+ //asm volatile ( "mov %0, %%rcx" : : "m" (&jumpvector) );
+ asm volatile ( "mov %0, %%rcx" : : "m" (jump_start) );
+ //asm volatile ( "mov %0, %%rcx" : : "m" (njump) );
+ asm volatile ( "ljmp *(%%rcx)" : :);
+ /* Never come back to here. */
+}
+
+typedef struct sys_img_options {
+ UINT8 nothing_yet;
+} sys_img_options_t;
+
+#endif /* __ELILO_SYSDEPS_X86_64_H__ */
projects / debian / elilo / blobdiff