summaryrefslogtreecommitdiffstats
path: root/arch/x86/boot/compressed
diff options
context:
space:
mode:
authorAnton Arapov <anton@redhat.com>2012-10-29 11:15:37 +0100
committerAnton Arapov <anton@redhat.com>2012-10-29 11:15:37 +0100
commit7d558cd9c7b18e4b16953265aa0da45e63f3b968 (patch)
tree7135d5a810768c9c619346282ee9cfdf1765e225 /arch/x86/boot/compressed
parent985ef6b2108ed28ffd5f6630e1e0fce2e2a775f2 (diff)
downloadkernel-uprobes-7d558cd9c7b18e4b16953265aa0da45e63f3b968.tar.gz
kernel-uprobes-7d558cd9c7b18e4b16953265aa0da45e63f3b968.tar.xz
kernel-uprobes-7d558cd9c7b18e4b16953265aa0da45e63f3b968.zip
fedora kernel: cd394142aac30b5c751f25b517572e2448695641v3.6.3-2f17
Signed-off-by: Anton Arapov <anton@redhat.com>
Diffstat (limited to 'arch/x86/boot/compressed')
-rw-r--r--arch/x86/boot/compressed/Makefile3
-rw-r--r--arch/x86/boot/compressed/cmdline.c4
-rw-r--r--arch/x86/boot/compressed/early_serial_console.c4
-rw-r--r--arch/x86/boot/compressed/eboot.c198
-rw-r--r--arch/x86/boot/compressed/head_32.S10
-rw-r--r--arch/x86/boot/compressed/head_64.S10
-rw-r--r--arch/x86/boot/compressed/misc.c31
-rw-r--r--arch/x86/boot/compressed/misc.h27
8 files changed, 183 insertions, 104 deletions
diff --git a/arch/x86/boot/compressed/Makefile b/arch/x86/boot/compressed/Makefile
index e398bb5d63b..8a84501acb1 100644
--- a/arch/x86/boot/compressed/Makefile
+++ b/arch/x86/boot/compressed/Makefile
@@ -28,6 +28,9 @@ VMLINUX_OBJS = $(obj)/vmlinux.lds $(obj)/head_$(BITS).o $(obj)/misc.o \
$(obj)/string.o $(obj)/cmdline.o $(obj)/early_serial_console.o \
$(obj)/piggy.o
+$(obj)/eboot.o: KBUILD_CFLAGS += -fshort-wchar -mno-red-zone
+$(obj)/efi_stub_$(BITS).o: KBUILD_CLFAGS += -fshort-wchar -mno-red-zone
+
ifeq ($(CONFIG_EFI_STUB), y)
VMLINUX_OBJS += $(obj)/eboot.o $(obj)/efi_stub_$(BITS).o
endif
diff --git a/arch/x86/boot/compressed/cmdline.c b/arch/x86/boot/compressed/cmdline.c
index cb62f786990..10f6b1178c6 100644
--- a/arch/x86/boot/compressed/cmdline.c
+++ b/arch/x86/boot/compressed/cmdline.c
@@ -1,5 +1,7 @@
#include "misc.h"
+#ifdef CONFIG_EARLY_PRINTK
+
static unsigned long fs;
static inline void set_fs(unsigned long seg)
{
@@ -19,3 +21,5 @@ int cmdline_find_option_bool(const char *option)
{
return __cmdline_find_option_bool(real_mode->hdr.cmd_line_ptr, option);
}
+
+#endif
diff --git a/arch/x86/boot/compressed/early_serial_console.c b/arch/x86/boot/compressed/early_serial_console.c
index 261e81fb958..d3d003cb548 100644
--- a/arch/x86/boot/compressed/early_serial_console.c
+++ b/arch/x86/boot/compressed/early_serial_console.c
@@ -1,5 +1,9 @@
#include "misc.h"
+#ifdef CONFIG_EARLY_PRINTK
+
int early_serial_base;
#include "../early_serial_console.c"
+
+#endif
diff --git a/arch/x86/boot/compressed/eboot.c b/arch/x86/boot/compressed/eboot.c
index 4e85f5f8583..b3e0227df2c 100644
--- a/arch/x86/boot/compressed/eboot.c
+++ b/arch/x86/boot/compressed/eboot.c
@@ -729,32 +729,68 @@ fail:
* need to create one ourselves (usually the bootloader would create
* one for us).
*/
-static efi_status_t make_boot_params(struct boot_params *boot_params,
- efi_loaded_image_t *image,
- void *handle)
+struct boot_params *make_boot_params(void *handle, efi_system_table_t *_table)
{
- struct efi_info *efi = &boot_params->efi_info;
- struct apm_bios_info *bi = &boot_params->apm_bios_info;
- struct sys_desc_table *sdt = &boot_params->sys_desc_table;
- struct e820entry *e820_map = &boot_params->e820_map[0];
- struct e820entry *prev = NULL;
- struct setup_header *hdr = &boot_params->hdr;
- unsigned long size, key, desc_size, _size;
- efi_memory_desc_t *mem_map;
- void *options = image->load_options;
- u32 load_options_size = image->load_options_size / 2; /* ASCII */
+ struct boot_params *boot_params;
+ struct sys_desc_table *sdt;
+ struct apm_bios_info *bi;
+ struct setup_header *hdr;
+ struct efi_info *efi;
+ efi_loaded_image_t *image;
+ void *options;
+ u32 load_options_size;
+ efi_guid_t proto = LOADED_IMAGE_PROTOCOL_GUID;
int options_size = 0;
efi_status_t status;
- __u32 desc_version;
unsigned long cmdline;
- u8 nr_entries;
u16 *s2;
u8 *s1;
int i;
+ sys_table = _table;
+
+ /* Check if we were booted by the EFI firmware */
+ if (sys_table->hdr.signature != EFI_SYSTEM_TABLE_SIGNATURE)
+ return NULL;
+
+ status = efi_call_phys3(sys_table->boottime->handle_protocol,
+ handle, &proto, (void *)&image);
+ if (status != EFI_SUCCESS) {
+ efi_printk("Failed to get handle for LOADED_IMAGE_PROTOCOL\n");
+ return NULL;
+ }
+
+ status = low_alloc(0x4000, 1, (unsigned long *)&boot_params);
+ if (status != EFI_SUCCESS) {
+ efi_printk("Failed to alloc lowmem for boot params\n");
+ return NULL;
+ }
+
+ memset(boot_params, 0x0, 0x4000);
+
+ hdr = &boot_params->hdr;
+ efi = &boot_params->efi_info;
+ bi = &boot_params->apm_bios_info;
+ sdt = &boot_params->sys_desc_table;
+
+ /* Copy the second sector to boot_params */
+ memcpy(&hdr->jump, image->image_base + 512, 512);
+
+ /*
+ * Fill out some of the header fields ourselves because the
+ * EFI firmware loader doesn't load the first sector.
+ */
+ hdr->root_flags = 1;
+ hdr->vid_mode = 0xffff;
+ hdr->boot_flag = 0xAA55;
+
+ hdr->code32_start = (__u64)(unsigned long)image->image_base;
+
hdr->type_of_loader = 0x21;
/* Convert unicode cmdline to ascii */
+ options = image->load_options;
+ load_options_size = image->load_options_size / 2; /* ASCII */
cmdline = 0;
s2 = (u16 *)options;
@@ -791,18 +827,36 @@ static efi_status_t make_boot_params(struct boot_params *boot_params,
hdr->ramdisk_image = 0;
hdr->ramdisk_size = 0;
- status = handle_ramdisks(image, hdr);
- if (status != EFI_SUCCESS)
- goto free_cmdline;
-
- setup_graphics(boot_params);
-
/* Clear APM BIOS info */
memset(bi, 0, sizeof(*bi));
memset(sdt, 0, sizeof(*sdt));
- memcpy(&efi->efi_loader_signature, EFI_LOADER_SIGNATURE, sizeof(__u32));
+ status = handle_ramdisks(image, hdr);
+ if (status != EFI_SUCCESS)
+ goto fail2;
+
+ return boot_params;
+fail2:
+ if (options_size)
+ low_free(options_size, hdr->cmd_line_ptr);
+fail:
+ low_free(0x4000, (unsigned long)boot_params);
+ return NULL;
+}
+
+static efi_status_t exit_boot(struct boot_params *boot_params,
+ void *handle)
+{
+ struct efi_info *efi = &boot_params->efi_info;
+ struct e820entry *e820_map = &boot_params->e820_map[0];
+ struct e820entry *prev = NULL;
+ unsigned long size, key, desc_size, _size;
+ efi_memory_desc_t *mem_map;
+ efi_status_t status;
+ __u32 desc_version;
+ u8 nr_entries;
+ int i;
size = sizeof(*mem_map) * 32;
@@ -811,7 +865,7 @@ again:
_size = size;
status = low_alloc(size, 1, (unsigned long *)&mem_map);
if (status != EFI_SUCCESS)
- goto free_cmdline;
+ return status;
status = efi_call_phys5(sys_table->boottime->get_memory_map, &size,
mem_map, &key, &desc_size, &desc_version);
@@ -823,6 +877,7 @@ again:
if (status != EFI_SUCCESS)
goto free_mem_map;
+ memcpy(&efi->efi_loader_signature, EFI_LOADER_SIGNATURE, sizeof(__u32));
efi->efi_systab = (unsigned long)sys_table;
efi->efi_memdesc_size = desc_size;
efi->efi_memdesc_version = desc_version;
@@ -906,61 +961,13 @@ again:
free_mem_map:
low_free(_size, (unsigned long)mem_map);
-free_cmdline:
- if (options_size)
- low_free(options_size, hdr->cmd_line_ptr);
-fail:
return status;
}
-/*
- * On success we return a pointer to a boot_params structure, and NULL
- * on failure.
- */
-struct boot_params *efi_main(void *handle, efi_system_table_t *_table)
+static efi_status_t relocate_kernel(struct setup_header *hdr)
{
- struct boot_params *boot_params;
unsigned long start, nr_pages;
- struct desc_ptr *gdt, *idt;
- efi_loaded_image_t *image;
- struct setup_header *hdr;
efi_status_t status;
- efi_guid_t proto = LOADED_IMAGE_PROTOCOL_GUID;
- struct desc_struct *desc;
-
- sys_table = _table;
-
- /* Check if we were booted by the EFI firmware */
- if (sys_table->hdr.signature != EFI_SYSTEM_TABLE_SIGNATURE)
- goto fail;
-
- status = efi_call_phys3(sys_table->boottime->handle_protocol,
- handle, &proto, (void *)&image);
- if (status != EFI_SUCCESS) {
- efi_printk("Failed to get handle for LOADED_IMAGE_PROTOCOL\n");
- goto fail;
- }
-
- status = low_alloc(0x4000, 1, (unsigned long *)&boot_params);
- if (status != EFI_SUCCESS) {
- efi_printk("Failed to alloc lowmem for boot params\n");
- goto fail;
- }
-
- memset(boot_params, 0x0, 0x4000);
-
- hdr = &boot_params->hdr;
-
- /* Copy the second sector to boot_params */
- memcpy(&hdr->jump, image->image_base + 512, 512);
-
- /*
- * Fill out some of the header fields ourselves because the
- * EFI firmware loader doesn't load the first sector.
- */
- hdr->root_flags = 1;
- hdr->vid_mode = 0xffff;
- hdr->boot_flag = 0xAA55;
/*
* The EFI firmware loader could have placed the kernel image
@@ -978,16 +985,40 @@ struct boot_params *efi_main(void *handle, efi_system_table_t *_table)
if (status != EFI_SUCCESS) {
status = low_alloc(hdr->init_size, hdr->kernel_alignment,
&start);
- if (status != EFI_SUCCESS) {
+ if (status != EFI_SUCCESS)
efi_printk("Failed to alloc mem for kernel\n");
- goto fail;
- }
}
+ if (status == EFI_SUCCESS)
+ memcpy((void *)start, (void *)(unsigned long)hdr->code32_start,
+ hdr->init_size);
+
+ hdr->pref_address = hdr->code32_start;
hdr->code32_start = (__u32)start;
- hdr->pref_address = (__u64)(unsigned long)image->image_base;
- memcpy((void *)start, image->image_base, image->image_size);
+ return status;
+}
+
+/*
+ * On success we return a pointer to a boot_params structure, and NULL
+ * on failure.
+ */
+struct boot_params *efi_main(void *handle, efi_system_table_t *_table,
+ struct boot_params *boot_params)
+{
+ struct desc_ptr *gdt, *idt;
+ efi_loaded_image_t *image;
+ struct setup_header *hdr = &boot_params->hdr;
+ efi_status_t status;
+ struct desc_struct *desc;
+
+ sys_table = _table;
+
+ /* Check if we were booted by the EFI firmware */
+ if (sys_table->hdr.signature != EFI_SYSTEM_TABLE_SIGNATURE)
+ goto fail;
+
+ setup_graphics(boot_params);
status = efi_call_phys3(sys_table->boottime->allocate_pool,
EFI_LOADER_DATA, sizeof(*gdt),
@@ -1015,7 +1046,18 @@ struct boot_params *efi_main(void *handle, efi_system_table_t *_table)
idt->size = 0;
idt->address = 0;
- status = make_boot_params(boot_params, image, handle);
+ /*
+ * If the kernel isn't already loaded at the preferred load
+ * address, relocate it.
+ */
+ if (hdr->pref_address != hdr->code32_start) {
+ status = relocate_kernel(hdr);
+
+ if (status != EFI_SUCCESS)
+ goto fail;
+ }
+
+ status = exit_boot(boot_params, handle);
if (status != EFI_SUCCESS)
goto fail;
diff --git a/arch/x86/boot/compressed/head_32.S b/arch/x86/boot/compressed/head_32.S
index c85e3ac99bb..aa4aaf1b238 100644
--- a/arch/x86/boot/compressed/head_32.S
+++ b/arch/x86/boot/compressed/head_32.S
@@ -42,6 +42,16 @@ ENTRY(startup_32)
*/
add $0x4, %esp
+ call make_boot_params
+ cmpl $0, %eax
+ je 1f
+ movl 0x4(%esp), %esi
+ movl (%esp), %ecx
+ pushl %eax
+ pushl %esi
+ pushl %ecx
+
+ .org 0x30,0x90
call efi_main
cmpl $0, %eax
movl %eax, %esi
diff --git a/arch/x86/boot/compressed/head_64.S b/arch/x86/boot/compressed/head_64.S
index 87e03a13d8e..2c4b171eec3 100644
--- a/arch/x86/boot/compressed/head_64.S
+++ b/arch/x86/boot/compressed/head_64.S
@@ -209,6 +209,16 @@ ENTRY(startup_64)
.org 0x210
mov %rcx, %rdi
mov %rdx, %rsi
+ pushq %rdi
+ pushq %rsi
+ call make_boot_params
+ cmpq $0,%rax
+ je 1f
+ mov %rax, %rdx
+ popq %rsi
+ popq %rdi
+
+ .org 0x230,0x90
call efi_main
movq %rax,%rsi
cmpq $0,%rax
diff --git a/arch/x86/boot/compressed/misc.c b/arch/x86/boot/compressed/misc.c
index 7116dcba0c9..88f7ff6da40 100644
--- a/arch/x86/boot/compressed/misc.c
+++ b/arch/x86/boot/compressed/misc.c
@@ -108,8 +108,6 @@ static void error(char *m);
* This is set up by the setup-routine at boot-time
*/
struct boot_params *real_mode; /* Pointer to real-mode data */
-static int quiet;
-static int debug;
void *memset(void *s, int c, size_t n);
void *memcpy(void *dest, const void *src, size_t n);
@@ -170,15 +168,11 @@ static void serial_putchar(int ch)
outb(ch, early_serial_base + TXR);
}
-void __putstr(int error, const char *s)
+void __putstr(const char *s)
{
int x, y, pos;
char c;
-#ifndef CONFIG_X86_VERBOSE_BOOTUP
- if (!error)
- return;
-#endif
if (early_serial_base) {
const char *str = s;
while (*str) {
@@ -265,9 +259,9 @@ void *memcpy(void *dest, const void *src, size_t n)
static void error(char *x)
{
- __putstr(1, "\n\n");
- __putstr(1, x);
- __putstr(1, "\n\n -- System halted");
+ error_putstr("\n\n");
+ error_putstr(x);
+ error_putstr("\n\n -- System halted");
while (1)
asm("hlt");
@@ -294,8 +288,7 @@ static void parse_elf(void *output)
return;
}
- if (!quiet)
- putstr("Parsing ELF... ");
+ debug_putstr("Parsing ELF... ");
phdrs = malloc(sizeof(*phdrs) * ehdr.e_phnum);
if (!phdrs)
@@ -332,11 +325,6 @@ asmlinkage void decompress_kernel(void *rmode, memptr heap,
{
real_mode = rmode;
- if (cmdline_find_option_bool("quiet"))
- quiet = 1;
- if (cmdline_find_option_bool("debug"))
- debug = 1;
-
if (real_mode->screen_info.orig_video_mode == 7) {
vidmem = (char *) 0xb0000;
vidport = 0x3b4;
@@ -349,8 +337,7 @@ asmlinkage void decompress_kernel(void *rmode, memptr heap,
cols = real_mode->screen_info.orig_video_cols;
console_init();
- if (debug)
- putstr("early console in decompress_kernel\n");
+ debug_putstr("early console in decompress_kernel\n");
free_mem_ptr = heap; /* Heap */
free_mem_end_ptr = heap + BOOT_HEAP_SIZE;
@@ -369,11 +356,9 @@ asmlinkage void decompress_kernel(void *rmode, memptr heap,
error("Wrong destination address");
#endif
- if (!quiet)
- putstr("\nDecompressing Linux... ");
+ debug_putstr("\nDecompressing Linux... ");
decompress(input_data, input_len, NULL, NULL, output, NULL, error);
parse_elf(output);
- if (!quiet)
- putstr("done.\nBooting the kernel.\n");
+ debug_putstr("done.\nBooting the kernel.\n");
return;
}
diff --git a/arch/x86/boot/compressed/misc.h b/arch/x86/boot/compressed/misc.h
index 3f19c81a620..0e6dc0ee0ee 100644
--- a/arch/x86/boot/compressed/misc.h
+++ b/arch/x86/boot/compressed/misc.h
@@ -24,9 +24,21 @@
/* misc.c */
extern struct boot_params *real_mode; /* Pointer to real-mode data */
-void __putstr(int error, const char *s);
-#define putstr(__x) __putstr(0, __x)
-#define puts(__x) __putstr(0, __x)
+void __putstr(const char *s);
+#define error_putstr(__x) __putstr(__x)
+
+#ifdef CONFIG_X86_VERBOSE_BOOTUP
+
+#define debug_putstr(__x) __putstr(__x)
+
+#else
+
+static inline void debug_putstr(const char *s)
+{ }
+
+#endif
+
+#ifdef CONFIG_EARLY_PRINTK
/* cmdline.c */
int cmdline_find_option(const char *option, char *buffer, int bufsize);
@@ -36,4 +48,13 @@ int cmdline_find_option_bool(const char *option);
extern int early_serial_base;
void console_init(void);
+#else
+
+/* early_serial_console.c */
+static const int early_serial_base;
+static inline void console_init(void)
+{ }
+
+#endif
+
#endif