path: root/libre/memtest86+/multiboot.patch

commit 90bdb3dff10753cc10f3580473d379972176e3cb
Author: Robert Millan <rmh.debian@aybabtu.com>
Date:   Sun Jan 17 17:06:16 2010 +0100

    git-debimport memtest86+_4.00-2.2.diff.gz

Index: memtest86+/Makefile
===================================================================
--- memtest86+.orig/Makefile
+++ memtest86+/Makefile
@@ -14,11 +14,15 @@ CC=gcc
 
 CFLAGS= -Wall -march=i486 -m32 -O1 -fomit-frame-pointer -fno-builtin \
 	-ffreestanding -fPIC $(SMP_FL) -fno-stack-protector 
-	
+
+# This reverts a change introduced with recent binutils (post
+# http://sourceware.org/bugzilla/show_bug.cgi?id=10569).  Needed to
+# ensure Multiboot header is within the limit offset.
+LD += -z max-page-size=0x1000
+
 OBJS= head.o reloc.o main.o test.o init.o lib.o patn.o screen_buffer.o \
       config.o cpuid.o linuxbios.o pci.o memsize.o spd.o error.o dmi.o controller.o \
-      smp.o vmem.o random.o
-      
+      smp.o vmem.o random.o multiboot.o
 
 all: clean memtest.bin memtest 
 		 scp memtest.bin root@192.168.0.12:/srv/tftp/mt86plus
Index: memtest86+/head.S
===================================================================
--- memtest86+.orig/head.S
+++ memtest86+/head.S
@@ -13,9 +13,11 @@
 
 .text
 #define __ASSEMBLY__
+#define ASM_FILE
 #include "defs.h"
 #include "config.h"
 #include "test.h"
+#include "multiboot.h"
 
 	.code32
 	.globl startup_32
@@ -23,6 +25,13 @@ startup_32:
 	cld
 	cli
 
+	/* Store MBI pointer */
+	xorl	%ecx, %ecx
+	cmpl	$MULTIBOOT_BOOTLOADER_MAGIC, %eax
+	jne 0f
+	movl	%ebx, %ecx
+0:
+
 	/* Ensure I have a boot_stack pointer */
 	testl	%esp, %esp
 	jnz 0f
@@ -35,7 +44,21 @@ startup_32:
 0:	popl	%ebx
 	addl	$_GLOBAL_OFFSET_TABLE_+[.-0b], %ebx
 
-	/* Pick the appropriate boot_stack address */
+	/* Move MBI pointer to a safe place */
+	testl	%ecx, %ecx
+	je	0f
+	movl	%ecx, mbiptr@GOTOFF(%ebx)
+0:
+
+	jmp	0f
+	/* Multiboot header */
+.align 4
+	.long   MULTIBOOT_HEADER_MAGIC
+	.long   0
+	.long   -MULTIBOOT_HEADER_MAGIC
+0:
+
+	/* Pick the appropriate stack address */
 	leal	boot_stack_top@GOTOFF(%ebx), %esp
 
 	/* Reload all of the segment registers */
@@ -780,6 +803,9 @@ prot:
 	movl	$1, %eax
 	ret
 
+.globl mbiptr
+mbiptr:
+	.long	0
 realptr:
 	.word	real - RSTART
 	.word	0x0000
Index: memtest86+/init.c
===================================================================
--- memtest86+.orig/init.c
+++ memtest86+/init.c
@@ -19,8 +19,7 @@
 #include "smp.h"
 #include "io.h"
 #include "spd.h"
-#include "pci.h"
-#include "controller.h"
+#include "multiboot.h"
 
 extern struct tseq tseq[];
 extern short memsz_mode;
Index: memtest86+/main.c
===================================================================
--- memtest86+.orig/main.c
+++ memtest86+/main.c
@@ -16,6 +16,7 @@
 #include "cpuid.h"
 #include "smp.h"
 #include "config.h"
+#include "multiboot.h"
 #undef TEST_TIMES
 #define DEFTESTS 9
 #define FIRST_DIVISER 3
@@ -41,6 +42,8 @@ extern struct	barrier_s *barr;
 extern int 	num_cpus;
 extern int 	act_cpus;
 
+extern struct multiboot_info *mbiptr;
+
 static int	find_ticks_for_test(int test);
 void		find_ticks_for_pass(void);
 int		find_chunks(int test);
@@ -286,11 +289,15 @@ static void parse_command_line(void)
 		cpu_mask[i] = 1;
 	}
 
-	if (*OLD_CL_MAGIC_ADDR != OLD_CL_MAGIC)
-		return;
+	if (mbiptr && (mbiptr->flags & MULTIBOOT_INFO_CMDLINE)) {
+		cp = (void *) mbiptr->cmdline;
+	} else {
+		if (*OLD_CL_MAGIC_ADDR != OLD_CL_MAGIC)
+			return;
 
-	unsigned short offset = *OLD_CL_OFFSET_ADDR;
-	cp = MK_PTR(INITSEG, offset);
+		unsigned short offset = *OLD_CL_OFFSET_ADDR;
+		cp = MK_PTR(INITSEG, offset);
+	}
 
 	/* skip leading spaces */
 	while (*cp == ' ')
Index: memtest86+/memsize.c
===================================================================
--- memtest86+.orig/memsize.c
+++ memtest86+/memsize.c
@@ -36,7 +36,9 @@ void mem_size(void)
 
 	/* Get the memory size from the BIOS */
         /* Determine the memory map */
-	if (query_linuxbios()) {
+	if (query_multiboot()) {
+                flag = 2;
+        } else if (query_linuxbios()) {
 		flag = 1;
 	} else if (query_pcbios()) {
 		flag = 2;
Index: memtest86+/test.h
===================================================================
--- memtest86+.orig/test.h
+++ memtest86+/test.h
@@ -113,6 +113,7 @@ int strstr(char *str1, char *str2);
 int strlen(char *string);
 int query_linuxbios(void);
 int query_pcbios(void);
+int query_multiboot(void);
 int insertaddress(ulong);
 void printpatn(void);
 void printpatn(void);
@@ -307,6 +308,7 @@ struct vars {
 #define FIRMWARE_UNKNOWN   0
 #define FIRMWARE_PCBIOS    1
 #define FIRMWARE_LINUXBIOS 2
+#define FIRMWARE_MULTIBOOT 3
 
 extern struct vars * const v;
 extern unsigned char _start[], _end[], startup_32[];
diff --git a/multiboot.c b/multiboot.c
new file mode 100644
index 0000000..a81ebc2
--- /dev/null
+++ b/multiboot.c
@@ -0,0 +1,49 @@
+/* multiboot.c
+ *
+ * Copyright (C) 2008,2009 Robert Millan
+ *
+ * Loosely based on linuxbios.c, which is:
+ *
+ * Released under version 2 of the Gnu Public License.
+ * By Eric Biederman
+ */
+
+#include "multiboot.h"
+#include "test.h"
+
+extern struct multiboot_info *mbiptr;
+
+int query_multiboot(void)
+{
+	struct multiboot_mmap_entry *mem;
+	int i;
+
+	if (!mbiptr) {
+		return 0;
+	}
+	if (!mbiptr->mmap_addr) {
+		return 1;
+	}
+	if ((mbiptr->flags & MULTIBOOT_INFO_MEM_MAP) == 0) {
+		return 1;
+	}
+
+	mem = (struct multiboot_mmap_entry *) mbiptr->mmap_addr;
+	mem_info.e820_nr = 0;
+
+	for (i = 0; i < E820MAX; i++) {
+		if ((multiboot_uint32_t) mem >= (mbiptr->mmap_addr + mbiptr->mmap_length)) {
+			break;
+		}
+
+		mem_info.e820[mem_info.e820_nr].addr = mem->addr;
+		mem_info.e820[mem_info.e820_nr].size = mem->len;
+		/* Multiboot spec defines available / reserved types to match with E820.  */
+		mem_info.e820[mem_info.e820_nr].type = mem->type;
+		mem_info.e820_nr++;
+
+		mem = (struct multiboot_mmap_entry *) ((multiboot_uint32_t) mem + mem->size + sizeof (mem->size));
+	}
+
+	return 1;
+}
diff --git a/multiboot.h b/multiboot.h
new file mode 100644
index 0000000..686a6b4
--- /dev/null
+++ b/multiboot.h
@@ -0,0 +1,259 @@
+/*  multiboot.h - Multiboot header file.  */
+/*  Copyright (C) 1999,2003,2007,2008,2009,2010  Free Software Foundation, Inc.
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a copy
+ *  of this software and associated documentation files (the "Software"), to
+ *  deal in the Software without restriction, including without limitation the
+ *  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ *  sell copies of the Software, and to permit persons to whom the Software is
+ *  furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in
+ *  all copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL ANY
+ *  DEVELOPER OR DISTRIBUTOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ *  WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
+ *  IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef MULTIBOOT_HEADER
+#define MULTIBOOT_HEADER 1
+
+/* How many bytes from the start of the file we search for the header.  */
+#define MULTIBOOT_SEARCH			8192
+
+/* The magic field should contain this.  */
+#define MULTIBOOT_HEADER_MAGIC			0x1BADB002
+
+/* This should be in %eax.  */
+#define MULTIBOOT_BOOTLOADER_MAGIC		0x2BADB002
+
+/* Alignment of multiboot modules.  */
+#define MULTIBOOT_MOD_ALIGN			0x00001000
+
+/* Alignment of the multiboot info structure.  */
+#define MULTIBOOT_INFO_ALIGN			0x00000004
+
+/* Flags set in the 'flags' member of the multiboot header.  */
+
+/* Align all boot modules on i386 page (4KB) boundaries.  */
+#define MULTIBOOT_PAGE_ALIGN			0x00000001
+
+/* Must pass memory information to OS.  */
+#define MULTIBOOT_MEMORY_INFO			0x00000002
+
+/* Must pass video information to OS.  */
+#define MULTIBOOT_VIDEO_MODE			0x00000004
+
+/* This flag indicates the use of the address fields in the header.  */
+#define MULTIBOOT_AOUT_KLUDGE			0x00010000
+
+/* Flags to be set in the 'flags' member of the multiboot info structure.  */
+
+/* is there basic lower/upper memory information? */
+#define MULTIBOOT_INFO_MEMORY			0x00000001
+/* is there a boot device set? */
+#define MULTIBOOT_INFO_BOOTDEV			0x00000002
+/* is the command-line defined? */
+#define MULTIBOOT_INFO_CMDLINE			0x00000004
+/* are there modules to do something with? */
+#define MULTIBOOT_INFO_MODS			0x00000008
+
+/* These next two are mutually exclusive */
+
+/* is there a symbol table loaded? */
+#define MULTIBOOT_INFO_AOUT_SYMS		0x00000010
+/* is there an ELF section header table? */
+#define MULTIBOOT_INFO_ELF_SHDR			0X00000020
+
+/* is there a full memory map? */
+#define MULTIBOOT_INFO_MEM_MAP			0x00000040
+
+/* Is there drive info?  */
+#define MULTIBOOT_INFO_DRIVE_INFO		0x00000080
+
+/* Is there a config table?  */
+#define MULTIBOOT_INFO_CONFIG_TABLE		0x00000100
+
+/* Is there a boot loader name?  */
+#define MULTIBOOT_INFO_BOOT_LOADER_NAME		0x00000200
+
+/* Is there a APM table?  */
+#define MULTIBOOT_INFO_APM_TABLE		0x00000400
+
+/* Is there video information?  */
+#define MULTIBOOT_INFO_VBE_INFO		        0x00000800
+#define MULTIBOOT_INFO_FRAMEBUFFER_INFO	        0x00001000
+
+#ifndef ASM_FILE
+
+typedef unsigned char		multiboot_uint8_t;
+typedef unsigned short		multiboot_uint16_t;
+typedef unsigned int		multiboot_uint32_t;
+typedef unsigned long long	multiboot_uint64_t;
+
+struct multiboot_header
+{
+  /* Must be MULTIBOOT_MAGIC - see above.  */
+  multiboot_uint32_t magic;
+
+  /* Feature flags.  */
+  multiboot_uint32_t flags;
+
+  /* The above fields plus this one must equal 0 mod 2^32. */
+  multiboot_uint32_t checksum;
+
+  /* These are only valid if MULTIBOOT_AOUT_KLUDGE is set.  */
+  multiboot_uint32_t header_addr;
+  multiboot_uint32_t load_addr;
+  multiboot_uint32_t load_end_addr;
+  multiboot_uint32_t bss_end_addr;
+  multiboot_uint32_t entry_addr;
+
+  /* These are only valid if MULTIBOOT_VIDEO_MODE is set.  */
+  multiboot_uint32_t mode_type;
+  multiboot_uint32_t width;
+  multiboot_uint32_t height;
+  multiboot_uint32_t depth;
+};
+
+/* The symbol table for a.out.  */
+struct multiboot_aout_symbol_table
+{
+  multiboot_uint32_t tabsize;
+  multiboot_uint32_t strsize;
+  multiboot_uint32_t addr;
+  multiboot_uint32_t reserved;
+};
+typedef struct multiboot_aout_symbol_table multiboot_aout_symbol_table_t;
+
+/* The section header table for ELF.  */
+struct multiboot_elf_section_header_table
+{
+  multiboot_uint32_t num;
+  multiboot_uint32_t size;
+  multiboot_uint32_t addr;
+  multiboot_uint32_t shndx;
+};
+typedef struct multiboot_elf_section_header_table multiboot_elf_section_header_table_t;
+
+struct multiboot_color
+{
+  multiboot_uint8_t red;
+  multiboot_uint8_t green;
+  multiboot_uint8_t blue;
+};
+
+struct multiboot_info
+{
+  /* Multiboot info version number */
+  multiboot_uint32_t flags;
+
+  /* Available memory from BIOS */
+  multiboot_uint32_t mem_lower;
+  multiboot_uint32_t mem_upper;
+
+  /* "root" partition */
+  multiboot_uint32_t boot_device;
+
+  /* Kernel command line */
+  multiboot_uint32_t cmdline;
+
+  /* Boot-Module list */
+  multiboot_uint32_t mods_count;
+  multiboot_uint32_t mods_addr;
+
+  union
+  {
+    multiboot_aout_symbol_table_t aout_sym;
+    multiboot_elf_section_header_table_t elf_sec;
+  } u;
+
+  /* Memory Mapping buffer */
+  multiboot_uint32_t mmap_length;
+  multiboot_uint32_t mmap_addr;
+
+  /* Drive Info buffer */
+  multiboot_uint32_t drives_length;
+  multiboot_uint32_t drives_addr;
+
+  /* ROM configuration table */
+  multiboot_uint32_t config_table;
+
+  /* Boot Loader Name */
+  multiboot_uint32_t boot_loader_name;
+
+  /* APM table */
+  multiboot_uint32_t apm_table;
+
+  /* Video */
+  multiboot_uint32_t vbe_control_info;
+  multiboot_uint32_t vbe_mode_info;
+  multiboot_uint16_t vbe_mode;
+  multiboot_uint16_t vbe_interface_seg;
+  multiboot_uint16_t vbe_interface_off;
+  multiboot_uint16_t vbe_interface_len;
+
+  multiboot_uint64_t framebuffer_addr;
+  multiboot_uint32_t framebuffer_pitch;
+  multiboot_uint32_t framebuffer_width;
+  multiboot_uint32_t framebuffer_height;
+  multiboot_uint8_t framebuffer_bpp;
+#define MULTIBOOT_FRAMEBUFFER_TYPE_INDEXED	0
+#define MULTIBOOT_FRAMEBUFFER_TYPE_RGB		1
+#define MULTIBOOT_FRAMEBUFFER_TYPE_EGA_TEXT	2
+  multiboot_uint8_t framebuffer_type;
+  union
+  {
+    /* Indexed color.  */
+    struct
+    {
+      struct multiboot_color *framebuffer_palette_addr;
+      multiboot_uint16_t framebuffer_palette_num_colors;
+    };
+
+    /* Direct RGB color.  */
+    struct
+    {
+      multiboot_uint8_t framebuffer_red_field_position;
+      multiboot_uint8_t framebuffer_red_mask_size;
+      multiboot_uint8_t framebuffer_green_field_position;
+      multiboot_uint8_t framebuffer_green_mask_size;
+      multiboot_uint8_t framebuffer_blue_field_position;
+      multiboot_uint8_t framebuffer_blue_mask_size;
+    };
+  };
+};
+typedef struct multiboot_info multiboot_info_t;
+
+struct multiboot_mmap_entry
+{
+  multiboot_uint32_t size;
+  multiboot_uint64_t addr;
+  multiboot_uint64_t len;
+#define MULTIBOOT_MEMORY_AVAILABLE		1
+#define MULTIBOOT_MEMORY_RESERVED		2
+  multiboot_uint32_t type;
+} __attribute__((packed));
+typedef struct multiboot_mmap_entry multiboot_memory_map_t;
+
+struct multiboot_mod_list
+{
+  /* the memory used goes from bytes 'mod_start' to 'mod_end-1' inclusive */
+  multiboot_uint32_t mod_start;
+  multiboot_uint32_t mod_end;
+
+  /* Module command line */
+  multiboot_uint32_t cmdline;
+
+  /* padding to take it to 16 bytes (must be zero) */
+  multiboot_uint32_t pad;
+};
+typedef struct multiboot_mod_list multiboot_module_t;
+
+#endif /* ! ASM_FILE */
+
+#endif /* ! MULTIBOOT_HEADER */