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-rw-r--r--Documentation/i386/zero-page.txt6
-rw-r--r--arch/i386/boot/setup.S6
-rw-r--r--arch/x86_64/boot/setup.S6
-rw-r--r--arch/x86_64/kernel/head64.c4
-rw-r--r--arch/x86_64/kernel/setup64.c3
-rw-r--r--include/asm-i386/e820.h2
-rw-r--r--include/asm-i386/setup.h2
-rw-r--r--include/asm-x86_64/bootsetup.h3
-rw-r--r--include/asm-x86_64/e820.h2
-rw-r--r--include/linux/edd.h2
10 files changed, 18 insertions, 18 deletions
diff --git a/Documentation/i386/zero-page.txt b/Documentation/i386/zero-page.txt
index 67c053a099ed..df28c7416781 100644
--- a/Documentation/i386/zero-page.txt
+++ b/Documentation/i386/zero-page.txt
@@ -79,6 +79,6 @@ Offset Type Description
0x22c unsigned long ramdisk_max
0x230 16 bytes trampoline
0x290 - 0x2cf EDD_MBR_SIG_BUFFER (edd.S)
-0x2d0 - 0x600 E820MAP
-0x600 - 0x7ff EDDBUF (edd.S) for disk signature read sector
-0x600 - 0x7eb EDDBUF (edd.S) for edd data
+0x2d0 - 0xd00 E820MAP
+0xd00 - 0xeff EDDBUF (edd.S) for disk signature read sector
+0xd00 - 0xeeb EDDBUF (edd.S) for edd data
diff --git a/arch/i386/boot/setup.S b/arch/i386/boot/setup.S
index a934ab32bf8e..caa1fde6904e 100644
--- a/arch/i386/boot/setup.S
+++ b/arch/i386/boot/setup.S
@@ -164,7 +164,7 @@ ramdisk_max: .long (-__PAGE_OFFSET-(512 << 20)-1) & 0x7fffffff
trampoline: call start_of_setup
.align 16
# The offset at this point is 0x240
- .space (0x7ff-0x240+1) # E820 & EDD space (ending at 0x7ff)
+ .space (0xeff-0x240+1) # E820 & EDD space (ending at 0xeff)
# End of setup header #####################################################
start_of_setup:
@@ -333,9 +333,9 @@ jmpe820:
# sizeof(e820rec).
#
good820:
- movb (E820NR), %al # up to 32 entries
+ movb (E820NR), %al # up to 128 entries
cmpb $E820MAX, %al
- jnl bail820
+ jae bail820
incb (E820NR)
movw %di, %ax
diff --git a/arch/x86_64/boot/setup.S b/arch/x86_64/boot/setup.S
index 3e838be9dbe7..75d4d2ad93b3 100644
--- a/arch/x86_64/boot/setup.S
+++ b/arch/x86_64/boot/setup.S
@@ -160,7 +160,7 @@ ramdisk_max: .long 0xffffffff
trampoline: call start_of_setup
.align 16
# The offset at this point is 0x240
- .space (0x7ff-0x240+1) # E820 & EDD space (ending at 0x7ff)
+ .space (0xeff-0x240+1) # E820 & EDD space (ending at 0xeff)
# End of setup header #####################################################
start_of_setup:
@@ -412,9 +412,9 @@ jmpe820:
# sizeof(e820rec).
#
good820:
- movb (E820NR), %al # up to 32 entries
+ movb (E820NR), %al # up to 128 entries
cmpb $E820MAX, %al
- jnl bail820
+ jae bail820
incb (E820NR)
movw %di, %ax
diff --git a/arch/x86_64/kernel/head64.c b/arch/x86_64/kernel/head64.c
index 6cad46c98a23..77df2ccb08f1 100644
--- a/arch/x86_64/kernel/head64.c
+++ b/arch/x86_64/kernel/head64.c
@@ -29,8 +29,6 @@ static void __init clear_bss(void)
(unsigned long) __bss_end - (unsigned long) __bss_start);
}
-extern char x86_boot_params[2048];
-
#define NEW_CL_POINTER 0x228 /* Relative to real mode data */
#define OLD_CL_MAGIC_ADDR 0x90020
#define OLD_CL_MAGIC 0xA33F
@@ -44,7 +42,7 @@ static void __init copy_bootdata(char *real_mode_data)
int new_data;
char * command_line;
- memcpy(x86_boot_params, real_mode_data, 2048);
+ memcpy(x86_boot_params, real_mode_data, BOOT_PARAM_SIZE);
new_data = *(int *) (x86_boot_params + NEW_CL_POINTER);
if (!new_data) {
if (OLD_CL_MAGIC != * (u16 *) OLD_CL_MAGIC_ADDR) {
diff --git a/arch/x86_64/kernel/setup64.c b/arch/x86_64/kernel/setup64.c
index b5305b04bc40..678b7ac33b8b 100644
--- a/arch/x86_64/kernel/setup64.c
+++ b/arch/x86_64/kernel/setup64.c
@@ -12,6 +12,7 @@
#include <linux/string.h>
#include <linux/bootmem.h>
#include <linux/bitops.h>
+#include <asm/bootsetup.h>
#include <asm/pda.h>
#include <asm/pgtable.h>
#include <asm/processor.h>
@@ -26,7 +27,7 @@
#include <asm/mman.h>
#include <asm/numa.h>
-char x86_boot_params[2048] __initdata = {0,};
+char x86_boot_params[BOOT_PARAM_SIZE] __initdata = {0,};
cpumask_t cpu_initialized __initdata = CPU_MASK_NONE;
diff --git a/include/asm-i386/e820.h b/include/asm-i386/e820.h
index 5c285aee7294..edf65be21a92 100644
--- a/include/asm-i386/e820.h
+++ b/include/asm-i386/e820.h
@@ -13,7 +13,7 @@
#define __E820_HEADER
#define E820MAP 0x2d0 /* our map */
-#define E820MAX 32 /* number of entries in E820MAP */
+#define E820MAX 128 /* number of entries in E820MAP */
#define E820NR 0x1e8 /* # entries in E820MAP */
#define E820_RAM 1
diff --git a/include/asm-i386/setup.h b/include/asm-i386/setup.h
index 8814b54c75d4..7a32184d54bf 100644
--- a/include/asm-i386/setup.h
+++ b/include/asm-i386/setup.h
@@ -16,7 +16,7 @@
#define MAXMEM_PFN PFN_DOWN(MAXMEM)
#define MAX_NONPAE_PFN (1 << 20)
-#define PARAM_SIZE 2048
+#define PARAM_SIZE 4096
#define COMMAND_LINE_SIZE 256
#define OLD_CL_MAGIC_ADDR 0x90020
diff --git a/include/asm-x86_64/bootsetup.h b/include/asm-x86_64/bootsetup.h
index b570a484dc50..b829f7b534be 100644
--- a/include/asm-x86_64/bootsetup.h
+++ b/include/asm-x86_64/bootsetup.h
@@ -2,7 +2,8 @@
#ifndef _X86_64_BOOTSETUP_H
#define _X86_64_BOOTSETUP_H 1
-extern char x86_boot_params[2048];
+#define BOOT_PARAM_SIZE 4096
+extern char x86_boot_params[BOOT_PARAM_SIZE];
/*
* This is set up by the setup-routine at boot-time
diff --git a/include/asm-x86_64/e820.h b/include/asm-x86_64/e820.h
index 08f83a4b4f4a..8e94edf0b984 100644
--- a/include/asm-x86_64/e820.h
+++ b/include/asm-x86_64/e820.h
@@ -14,7 +14,7 @@
#include <linux/mmzone.h>
#define E820MAP 0x2d0 /* our map */
-#define E820MAX 32 /* number of entries in E820MAP */
+#define E820MAX 128 /* number of entries in E820MAP */
#define E820NR 0x1e8 /* # entries in E820MAP */
#define E820_RAM 1
diff --git a/include/linux/edd.h b/include/linux/edd.h
index c6e6747a401d..162512b886f7 100644
--- a/include/linux/edd.h
+++ b/include/linux/edd.h
@@ -32,7 +32,7 @@
#define EDDNR 0x1e9 /* addr of number of edd_info structs at EDDBUF
in boot_params - treat this as 1 byte */
-#define EDDBUF 0x600 /* addr of edd_info structs in boot_params */
+#define EDDBUF 0xd00 /* addr of edd_info structs in boot_params */
#define EDDMAXNR 6 /* number of edd_info structs starting at EDDBUF */
#define EDDEXTSIZE 8 /* change these if you muck with the structures */
#define EDDPARMSIZE 74
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.