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-rw-r--r--arch/x86/boot/Makefile5
-rw-r--r--arch/x86/boot/compressed/Makefile8
-rw-r--r--arch/x86/boot/compressed/head_32.S5
-rw-r--r--arch/x86/boot/compressed/misc.c12
-rw-r--r--arch/x86/boot/cpu.c17
-rw-r--r--arch/x86/boot/edd.c7
-rw-r--r--arch/x86/boot/header.S1
-rw-r--r--arch/x86/boot/mkcpustr.c40
-rw-r--r--arch/x86/boot/video-vesa.c11
9 files changed, 56 insertions, 50 deletions
diff --git a/arch/x86/boot/Makefile b/arch/x86/boot/Makefile
index 7ee102f9c4f8..cd48c7210016 100644
--- a/arch/x86/boot/Makefile
+++ b/arch/x86/boot/Makefile
@@ -72,9 +72,7 @@ KBUILD_CFLAGS := $(LINUXINCLUDE) -g -Os -D_SETUP -D__KERNEL__ \
KBUILD_CFLAGS += $(call cc-option,-m32)
KBUILD_AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__
-$(obj)/zImage: IMAGE_OFFSET := 0x1000
$(obj)/zImage: asflags-y := $(SVGA_MODE) $(RAMDISK)
-$(obj)/bzImage: IMAGE_OFFSET := 0x100000
$(obj)/bzImage: ccflags-y := -D__BIG_KERNEL__
$(obj)/bzImage: asflags-y := $(SVGA_MODE) $(RAMDISK) -D__BIG_KERNEL__
$(obj)/bzImage: BUILDFLAGS := -b
@@ -117,7 +115,7 @@ $(obj)/setup.bin: $(obj)/setup.elf FORCE
$(call if_changed,objcopy)
$(obj)/compressed/vmlinux: FORCE
- $(Q)$(MAKE) $(build)=$(obj)/compressed IMAGE_OFFSET=$(IMAGE_OFFSET) $@
+ $(Q)$(MAKE) $(build)=$(obj)/compressed $@
# Set this if you want to pass append arguments to the zdisk/fdimage/isoimage kernel
FDARGS =
@@ -181,6 +179,7 @@ isoimage: $(BOOTIMAGE)
mkisofs -J -r -o $(obj)/image.iso -b isolinux.bin -c boot.cat \
-no-emul-boot -boot-load-size 4 -boot-info-table \
$(obj)/isoimage
+ isohybrid $(obj)/image.iso 2>/dev/null || true
rm -rf $(obj)/isoimage
zlilo: $(BOOTIMAGE)
diff --git a/arch/x86/boot/compressed/Makefile b/arch/x86/boot/compressed/Makefile
index 92fdd35bd93e..1771c804e02f 100644
--- a/arch/x86/boot/compressed/Makefile
+++ b/arch/x86/boot/compressed/Makefile
@@ -27,9 +27,8 @@ $(obj)/vmlinux.bin: vmlinux FORCE
$(call if_changed,objcopy)
-ifeq ($(CONFIG_X86_32),y)
-targets += vmlinux.bin.all vmlinux.relocs
-hostprogs-y := relocs
+targets += vmlinux.bin.all vmlinux.relocs relocs
+hostprogs-$(CONFIG_X86_32) += relocs
quiet_cmd_relocs = RELOCS $@
cmd_relocs = $(obj)/relocs $< > $@;$(obj)/relocs --abs-relocs $<
@@ -43,6 +42,8 @@ quiet_cmd_relocbin = BUILD $@
$(obj)/vmlinux.bin.all: $(vmlinux.bin.all-y) FORCE
$(call if_changed,relocbin)
+ifeq ($(CONFIG_X86_32),y)
+
ifdef CONFIG_RELOCATABLE
$(obj)/vmlinux.bin.gz: $(obj)/vmlinux.bin.all FORCE
$(call if_changed,gzip)
@@ -59,6 +60,5 @@ $(obj)/vmlinux.bin.gz: $(obj)/vmlinux.bin FORCE
LDFLAGS_piggy.o := -r --format binary --oformat elf64-x86-64 -T
endif
-
$(obj)/piggy.o: $(obj)/vmlinux.scr $(obj)/vmlinux.bin.gz FORCE
$(call if_changed,ld)
diff --git a/arch/x86/boot/compressed/head_32.S b/arch/x86/boot/compressed/head_32.S
index ba7736cf2ec7..29c5fbf08392 100644
--- a/arch/x86/boot/compressed/head_32.S
+++ b/arch/x86/boot/compressed/head_32.S
@@ -137,14 +137,15 @@ relocated:
*/
movl output_len(%ebx), %eax
pushl %eax
+ # push arguments for decompress_kernel:
pushl %ebp # output address
movl input_len(%ebx), %eax
pushl %eax # input_len
leal input_data(%ebx), %eax
pushl %eax # input_data
leal boot_heap(%ebx), %eax
- pushl %eax # heap area as third argument
- pushl %esi # real mode pointer as second arg
+ pushl %eax # heap area
+ pushl %esi # real mode pointer
call decompress_kernel
addl $20, %esp
popl %ecx
diff --git a/arch/x86/boot/compressed/misc.c b/arch/x86/boot/compressed/misc.c
index 9fea73706479..5780d361105b 100644
--- a/arch/x86/boot/compressed/misc.c
+++ b/arch/x86/boot/compressed/misc.c
@@ -16,7 +16,7 @@
*/
#undef CONFIG_PARAVIRT
#ifdef CONFIG_X86_32
-#define _ASM_DESC_H_ 1
+#define ASM_X86__DESC_H 1
#endif
#ifdef CONFIG_X86_64
@@ -27,7 +27,7 @@
#include <linux/linkage.h>
#include <linux/screen_info.h>
#include <linux/elf.h>
-#include <asm/io.h>
+#include <linux/io.h>
#include <asm/page.h>
#include <asm/boot.h>
#include <asm/bootparam.h>
@@ -251,7 +251,7 @@ static void __putstr(int error, const char *s)
y--;
}
} else {
- vidmem [(x + cols * y) * 2] = c;
+ vidmem[(x + cols * y) * 2] = c;
if (++x >= cols) {
x = 0;
if (++y >= lines) {
@@ -277,7 +277,8 @@ static void *memset(void *s, int c, unsigned n)
int i;
char *ss = s;
- for (i = 0; i < n; i++) ss[i] = c;
+ for (i = 0; i < n; i++)
+ ss[i] = c;
return s;
}
@@ -287,7 +288,8 @@ static void *memcpy(void *dest, const void *src, unsigned n)
const char *s = src;
char *d = dest;
- for (i = 0; i < n; i++) d[i] = s[i];
+ for (i = 0; i < n; i++)
+ d[i] = s[i];
return dest;
}
diff --git a/arch/x86/boot/cpu.c b/arch/x86/boot/cpu.c
index 75298fe2edca..6ec6bb6e9957 100644
--- a/arch/x86/boot/cpu.c
+++ b/arch/x86/boot/cpu.c
@@ -59,17 +59,18 @@ int validate_cpu(void)
u32 e = err_flags[i];
for (j = 0; j < 32; j++) {
- int n = (i << 5)+j;
- if (*msg_strs < n) {
+ if (msg_strs[0] < i ||
+ (msg_strs[0] == i && msg_strs[1] < j)) {
/* Skip to the next string */
- do {
- msg_strs++;
- } while (*msg_strs);
- msg_strs++;
+ msg_strs += 2;
+ while (*msg_strs++)
+ ;
}
if (e & 1) {
- if (*msg_strs == n && msg_strs[1])
- printf("%s ", msg_strs+1);
+ if (msg_strs[0] == i &&
+ msg_strs[1] == j &&
+ msg_strs[2])
+ printf("%s ", msg_strs+2);
else
printf("%d:%d ", i, j);
}
diff --git a/arch/x86/boot/edd.c b/arch/x86/boot/edd.c
index d93cbc6464d0..1aae8f3e5ca1 100644
--- a/arch/x86/boot/edd.c
+++ b/arch/x86/boot/edd.c
@@ -41,6 +41,7 @@ static u32 read_mbr_sig(u8 devno, struct edd_info *ei, u32 *mbrsig)
char *mbrbuf_ptr, *mbrbuf_end;
u32 buf_base, mbr_base;
extern char _end[];
+ u16 mbr_magic;
sector_size = ei->params.bytes_per_sector;
if (!sector_size)
@@ -58,11 +59,15 @@ static u32 read_mbr_sig(u8 devno, struct edd_info *ei, u32 *mbrsig)
if (mbrbuf_end > (char *)(size_t)boot_params.hdr.heap_end_ptr)
return -1;
+ memset(mbrbuf_ptr, 0, sector_size);
if (read_mbr(devno, mbrbuf_ptr))
return -1;
*mbrsig = *(u32 *)&mbrbuf_ptr[EDD_MBR_SIG_OFFSET];
- return 0;
+ mbr_magic = *(u16 *)&mbrbuf_ptr[510];
+
+ /* check for valid MBR magic */
+ return mbr_magic == 0xAA55 ? 0 : -1;
}
static int get_edd_info(u8 devno, struct edd_info *ei)
diff --git a/arch/x86/boot/header.S b/arch/x86/boot/header.S
index af86e431acfa..b993062e9a5f 100644
--- a/arch/x86/boot/header.S
+++ b/arch/x86/boot/header.S
@@ -30,7 +30,6 @@ SYSSEG = DEF_SYSSEG /* system loaded at 0x10000 (65536) */
SYSSIZE = DEF_SYSSIZE /* system size: # of 16-byte clicks */
/* to be loaded */
ROOT_DEV = 0 /* ROOT_DEV is now written by "build" */
-SWAP_DEV = 0 /* SWAP_DEV is now written by "build" */
#ifndef SVGA_MODE
#define SVGA_MODE ASK_VGA
diff --git a/arch/x86/boot/mkcpustr.c b/arch/x86/boot/mkcpustr.c
index bbe76953bae9..8ef60f20b371 100644
--- a/arch/x86/boot/mkcpustr.c
+++ b/arch/x86/boot/mkcpustr.c
@@ -15,33 +15,33 @@
#include <stdio.h>
-#include "../kernel/cpu/feature_names.c"
-
-#if NCAPFLAGS > 8
-# error "Need to adjust the boot code handling of CPUID strings"
-#endif
+#include "../kernel/cpu/capflags.c"
int main(void)
{
- int i;
+ int i, j;
const char *str;
printf("static const char x86_cap_strs[] = \n");
- for (i = 0; i < NCAPINTS*32; i++) {
- str = x86_cap_flags[i];
-
- if (i == NCAPINTS*32-1) {
- /* The last entry must be unconditional; this
- also consumes the compiler-added null character */
- if (!str)
- str = "";
- printf("\t\"\\x%02x\"\"%s\"\n", i, str);
- } else if (str) {
- printf("#if REQUIRED_MASK%d & (1 << %d)\n"
- "\t\"\\x%02x\"\"%s\\0\"\n"
- "#endif\n",
- i >> 5, i & 31, i, str);
+ for (i = 0; i < NCAPINTS; i++) {
+ for (j = 0; j < 32; j++) {
+ str = x86_cap_flags[i*32+j];
+
+ if (i == NCAPINTS-1 && j == 31) {
+ /* The last entry must be unconditional; this
+ also consumes the compiler-added null
+ character */
+ if (!str)
+ str = "";
+ printf("\t\"\\x%02x\\x%02x\"\"%s\"\n",
+ i, j, str);
+ } else if (str) {
+ printf("#if REQUIRED_MASK%d & (1 << %d)\n"
+ "\t\"\\x%02x\\x%02x\"\"%s\\0\"\n"
+ "#endif\n",
+ i, j, i, j, str);
+ }
}
}
printf("\t;\n");
diff --git a/arch/x86/boot/video-vesa.c b/arch/x86/boot/video-vesa.c
index 401ad998ad08..99b3079dc6ab 100644
--- a/arch/x86/boot/video-vesa.c
+++ b/arch/x86/boot/video-vesa.c
@@ -88,14 +88,11 @@ static int vesa_probe(void)
(vminfo.memory_layout == 4 ||
vminfo.memory_layout == 6) &&
vminfo.memory_planes == 1) {
-#ifdef CONFIG_FB
+#ifdef CONFIG_FB_BOOT_VESA_SUPPORT
/* Graphics mode, color, linear frame buffer
supported. Only register the mode if
if framebuffer is configured, however,
- otherwise the user will be left without a screen.
- We don't require CONFIG_FB_VESA, however, since
- some of the other framebuffer drivers can use
- this mode-setting, too. */
+ otherwise the user will be left without a screen. */
mi = GET_HEAP(struct mode_info, 1);
mi->mode = mode + VIDEO_FIRST_VESA;
mi->depth = vminfo.bpp;
@@ -133,10 +130,12 @@ static int vesa_set_mode(struct mode_info *mode)
if ((vminfo.mode_attr & 0x15) == 0x05) {
/* It's a supported text mode */
is_graphic = 0;
+#ifdef CONFIG_FB_BOOT_VESA_SUPPORT
} else if ((vminfo.mode_attr & 0x99) == 0x99) {
/* It's a graphics mode with linear frame buffer */
is_graphic = 1;
vesa_mode |= 0x4000; /* Request linear frame buffer */
+#endif
} else {
return -1; /* Invalid mode */
}
@@ -224,7 +223,7 @@ static void vesa_store_pm_info(void)
static void vesa_store_mode_params_graphics(void)
{
/* Tell the kernel we're in VESA graphics mode */
- boot_params.screen_info.orig_video_isVGA = 0x23;
+ boot_params.screen_info.orig_video_isVGA = VIDEO_TYPE_VLFB;
/* Mode parameters */
boot_params.screen_info.vesa_attributes = vminfo.mode_attr;
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.