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163b743a22
elilo/elilo-x86-64-bootproto-update.diff

187 lines
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---
x86_64/sysdeps.h | 34 +++++++++++++---------------------
x86_64/system.c | 34 +++++++---------------------------
2 files changed, 20 insertions(+), 48 deletions(-)
--- a/x86_64/sysdeps.h
+++ b/x86_64/sysdeps.h
@@ -107,12 +107,12 @@ typedef union x86_64_boot_params {
/* 0x06 */ UINT8 orig_video_mode; /* LDR */
/* 0x07 */ UINT8 orig_video_cols; /* LDR */
-/* 0x08 */ UINT16 unused_1; /* unused */
+/* 0x08 */ UINT16 pad_1; /* unused */
/* %%TBD */
/* 0x0A */ UINT16 orig_ega_bx; /* LDR */
-/* 0x0C */ UINT16 unused_2; /* unused */
+/* 0x0C */ UINT16 pad_2; /* unused */
/* Screen height before passing control to kernel. */
/* 0x0E */ UINT8 orig_video_rows; /* LDR */
@@ -174,7 +174,7 @@ typedef union x86_64_boot_params {
/* 0x4E */ UINT32 bios_code_len; /* LDR */
/* 0x52 */ UINT16 bios_data_len; /* LDR */
-/* 0x54 */ UINT8 unused_3[0x2C]; /* unused */
+/* 0x54 */ UINT8 pad_3[0x2C]; /* unused */
/* %%TBD */
/* 0x80 */ UINT8 hd0_info[0x10]; /* LDR */
@@ -184,7 +184,7 @@ typedef union x86_64_boot_params {
/* 0xA0 */ UINT16 mca_info_len; /* LDR */
/* 0xA2 */ UINT8 mca_info_buf[0x10]; /* LDR */
-/* 0xB2 */ UINT8 unused_4[0x10E]; /* unused */
+/* 0xB2 */ UINT8 pad_4[0x10E]; /* unused */
/* EFI boot loader signature. */
/* 0x1C0 */ UINT8 efi_loader_sig[4]; /* LDR */
@@ -209,9 +209,9 @@ typedef union x86_64_boot_params {
/* Available contiguous extended memory in KB. */
/* 0x1E0 */ UINT32 alt_mem_k; /* LDR */
-/* 0x1E4 */ UINT32 unused_51; /* unused */
+/* 0x1E4 */ UINT32 pad_51; /* unused */
/* 0x1E8 */ UINT8 e820_nrmap;
-/* 0x1E9 */ UINT32 unused_52[2]; /* unused */
+/* 0x1E9 */ UINT32 pad_52[2]; /* unused */
/* Size of setup code in sectors (1 sector == 512 bytes). */
/* 0x1F1 */ UINT8 setup_sectors; /* BLD */
@@ -220,15 +220,10 @@ typedef union x86_64_boot_params {
/* 0x1F2 */ UINT16 mount_root_rdonly; /* BLD */
/* %%TBD */
-/* 0x1F4 */ UINT16 sys_size; /* BLD */
+/* 0x1F4 */ UINT32 sys_size; /* BLD */
/* %%TBD */
-/* 0x1F6 */ UINT16 swap_dev; /* BLD */
-
-/* %%TBD */
-/* 0x1F8 */ UINT16 ramdisk_flags; /* BLD */
-#define RAMDISK_PROMPT 0x8000
-#define RAMDISK_LOAD 0x4000
+/* 0x1F8 */ UINT16 ram_size_DNU; /* BLD */
/* %%TBD */
/* 0x1FA */ UINT16 video_mode_flag; /* BLD */
@@ -236,12 +231,8 @@ typedef union x86_64_boot_params {
/* %%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
+/* 0x1FE */ UINT16 boot_flag; /* ? */
/* Jump past setup data (not used in EFI). */
/* 0x200 */ UINT16 jump; /* BLD */
@@ -283,16 +274,17 @@ typedef union x86_64_boot_params {
/* 0x21C */ UINT32 initrd_size; /* LDR */
/* %%TBD */
-/* 0x220 */ UINT32 bootsect_helper; /* BLD */
+/* 0x220 */ UINT32 bootsect_helper_DNU; /* BLD */
/* %%TBD */
/* 0x224 */ UINT16 heap_end_ptr; /* LDR */
/* %%TBD */
-/* 0x226 */ UINT16 unused_7; /* LDR */
+/* 0x226 */ UINT8 ext_loader_ver; /* LDR */
+/* 0x227 */ UINT8 ext_loader_type; /* LDR */
/* 0x228 */ UINT32 cmdline_addr; /* LDR */
-/* 0x22C */ UINT32 unused_8[41];
+/* 0x22C */ UINT32 pad_8[41];
/* 0x2D0 */ UINT8 e820_map[2560];
} s;
} boot_params_t;
--- a/x86_64/system.c
+++ b/x86_64/system.c
@@ -493,17 +493,9 @@ sysdeps_create_boot_params(
hdr_version = (bp->s.hdr_major << 8) | bp->s.hdr_minor;
/*
- * Clear out unused memory in boot sector image.
+ * Do NOT clear out unknown memory in boot sector image.
+ * This breaks boot protocol >= 2.10 (2.6.31).
*/
- bp->s.unused_1 = 0;
- bp->s.unused_2 = 0;
- ZeroMem(&bp->s.unused_3, sizeof bp->s.unused_3);
- ZeroMem(&bp->s.unused_4, sizeof bp->s.unused_4);
- ZeroMem(&bp->s.unused_51, sizeof bp->s.unused_51);
- ZeroMem(&bp->s.unused_52, sizeof bp->s.unused_52);
- bp->s.unused_6 = 0;
- bp->s.unused_7 = 0;
- ZeroMem(bp->s.unused_8, sizeof bp->s.unused_8);
/*
* Tell kernel this was loaded by an advanced loader type.
@@ -553,19 +545,14 @@ sysdeps_create_boot_params(
DBG_PRT((L"initrd->start_addr="PTR_FMT" initrd->pgcnt=%d\n",
initrd->start_addr, initrd->pgcnt));
- /* These RAMdisk flags are not needed, just zero them. */
- bp->s.ramdisk_flags = 0;
+ /* These RAMdisk flags are not needed, just zero them. NOT!*/
+ /* 'ramdisk_flags' (@0x1F8) is called 'ram_size' in the meantime, */
+ /* see Documentation/x86/boot.txt. */
if (initrd->start_addr && initrd->pgcnt) {
/* %%TBD - This will probably have to be changed. */
bp->s.initrd_start = (UINT32)(UINT64)initrd->start_addr;
bp->s.initrd_size = (UINT32)(initrd->size);
- /*
- * This is the RAMdisk root device for RedHat 2.2.x
- * kernels (major 0x01, minor 0x00).
- */
-
- bp->s.orig_root_dev = 0x0100;
} else {
bp->s.initrd_start = 0;
bp->s.initrd_size = 0;
@@ -590,11 +577,6 @@ sysdeps_create_boot_params(
ZeroMem(bp->s.mca_info_buf, sizeof bp->s.mca_info_buf);
/*
- * Pointing device presence. The kernel will detect this.
- */
- bp->s.aux_dev_info = NO_MOUSE;
-
- /*
* EFI loader signature
*/
CopyMem(bp->s.efi_loader_sig, EFI_LOADER_SIG_X64, 4);
@@ -692,11 +674,9 @@ sysdeps_create_boot_params(
CHECK_OFFSET(setup_sectors, 0x1F1, L"%xh");
CHECK_OFFSET(mount_root_rdonly, 0x1F2, L"%xh");
CHECK_OFFSET(sys_size, 0x1F4, L"%xh");
- CHECK_OFFSET(swap_dev, 0x1F6, L"%xh");
- CHECK_OFFSET(ramdisk_flags, 0x1F8, L"%xh");
CHECK_OFFSET(video_mode_flag, 0x1FA, L"%xh");
CHECK_OFFSET(orig_root_dev, 0x1FC, L"%xh");
- CHECK_OFFSET(aux_dev_info, 0x1FF, L"%xh");
+ CHECK_OFFSET(boot_flag, 0x1FE, L"%xh");
CHECK_OFFSET(jump, 0x200, L"%xh");
CHECK_OFFSET(setup_sig, 0x202, L"'%-4.4a'");
CHECK_OFFSET(hdr_minor, 0x206, L"%xh");
@@ -710,9 +690,9 @@ sysdeps_create_boot_params(
CHECK_OFFSET(kernel_start, 0x214, L"%xh");
CHECK_OFFSET(initrd_start, 0x218, L"%xh");
CHECK_OFFSET(initrd_size, 0x21C, L"%xh");
- CHECK_OFFSET(bootsect_helper, 0x220, L"%xh");
CHECK_OFFSET(heap_end_ptr, 0x224, L"%xh");
CHECK_OFFSET(cmdline_addr, 0x228, L"%xh");
+ CHECK_OFFSET(e820_map, 0x2D0, L"%xh");
if (test) {
ERR_PRT((L"Boot sector and/or setup parameter alignment error."));
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