summaryrefslogtreecommitdiffstats
path: root/arch/x86/boot
diff options
context:
space:
mode:
Diffstat (limited to 'arch/x86/boot')
-rw-r--r--arch/x86/boot/boot.h13
-rw-r--r--arch/x86/boot/compressed/eboot.c19
-rw-r--r--arch/x86/boot/compressed/head_32.S8
-rw-r--r--arch/x86/boot/compressed/head_64.S9
-rw-r--r--arch/x86/boot/compressed/misc.c51
-rw-r--r--arch/x86/boot/compressed/string.c46
-rw-r--r--arch/x86/boot/cpucheck.c1
-rw-r--r--arch/x86/boot/edd.c1
-rw-r--r--arch/x86/boot/main.c1
-rw-r--r--arch/x86/boot/regs.c1
-rw-r--r--arch/x86/boot/string.c14
-rw-r--r--arch/x86/boot/string.h21
-rw-r--r--arch/x86/boot/video-vesa.c1
13 files changed, 103 insertions, 83 deletions
diff --git a/arch/x86/boot/boot.h b/arch/x86/boot/boot.h
index 50f8c5e0f37e..bd49ec61255c 100644
--- a/arch/x86/boot/boot.h
+++ b/arch/x86/boot/boot.h
@@ -177,14 +177,6 @@ static inline void wrgs32(u32 v, addr_t addr)
}
/* Note: these only return true/false, not a signed return value! */
-static inline int memcmp(const void *s1, const void *s2, size_t len)
-{
- u8 diff;
- asm("repe; cmpsb; setnz %0"
- : "=qm" (diff), "+D" (s1), "+S" (s2), "+c" (len));
- return diff;
-}
-
static inline int memcmp_fs(const void *s1, addr_t s2, size_t len)
{
u8 diff;
@@ -228,11 +220,6 @@ void copy_to_fs(addr_t dst, void *src, size_t len);
void *copy_from_fs(void *dst, addr_t src, size_t len);
void copy_to_gs(addr_t dst, void *src, size_t len);
void *copy_from_gs(void *dst, addr_t src, size_t len);
-void *memcpy(void *dst, void *src, size_t len);
-void *memset(void *dst, int c, size_t len);
-
-#define memcpy(d,s,l) __builtin_memcpy(d,s,l)
-#define memset(d,c,l) __builtin_memset(d,c,l)
/* a20.c */
int enable_a20(void);
diff --git a/arch/x86/boot/compressed/eboot.c b/arch/x86/boot/compressed/eboot.c
index 1e6146137f8e..4703a6c4b8e3 100644
--- a/arch/x86/boot/compressed/eboot.c
+++ b/arch/x86/boot/compressed/eboot.c
@@ -112,7 +112,7 @@ __file_size64(void *__fh, efi_char16_t *filename_16,
efi_file_info_t *info;
efi_status_t status;
efi_guid_t info_guid = EFI_FILE_INFO_ID;
- u32 info_sz;
+ u64 info_sz;
status = efi_early->call((unsigned long)fh->open, fh, &h, filename_16,
EFI_FILE_MODE_READ, (u64)0);
@@ -167,31 +167,31 @@ efi_file_size(efi_system_table_t *sys_table, void *__fh,
}
static inline efi_status_t
-efi_file_read(void *__fh, void *handle, unsigned long *size, void *addr)
+efi_file_read(void *handle, unsigned long *size, void *addr)
{
unsigned long func;
if (efi_early->is64) {
- efi_file_handle_64_t *fh = __fh;
+ efi_file_handle_64_t *fh = handle;
func = (unsigned long)fh->read;
return efi_early->call(func, handle, size, addr);
} else {
- efi_file_handle_32_t *fh = __fh;
+ efi_file_handle_32_t *fh = handle;
func = (unsigned long)fh->read;
return efi_early->call(func, handle, size, addr);
}
}
-static inline efi_status_t efi_file_close(void *__fh, void *handle)
+static inline efi_status_t efi_file_close(void *handle)
{
if (efi_early->is64) {
- efi_file_handle_64_t *fh = __fh;
+ efi_file_handle_64_t *fh = handle;
return efi_early->call((unsigned long)fh->close, handle);
} else {
- efi_file_handle_32_t *fh = __fh;
+ efi_file_handle_32_t *fh = handle;
return efi_early->call((unsigned long)fh->close, handle);
}
@@ -1016,6 +1016,9 @@ void setup_graphics(struct boot_params *boot_params)
* Because the x86 boot code expects to be passed a boot_params we
* need to create one ourselves (usually the bootloader would create
* one for us).
+ *
+ * The caller is responsible for filling out ->code32_start in the
+ * returned boot_params.
*/
struct boot_params *make_boot_params(struct efi_config *c)
{
@@ -1081,8 +1084,6 @@ struct boot_params *make_boot_params(struct efi_config *c)
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 */
diff --git a/arch/x86/boot/compressed/head_32.S b/arch/x86/boot/compressed/head_32.S
index de9d4200d305..cbed1407a5cd 100644
--- a/arch/x86/boot/compressed/head_32.S
+++ b/arch/x86/boot/compressed/head_32.S
@@ -59,6 +59,7 @@ ENTRY(efi_pe_entry)
call make_boot_params
cmpl $0, %eax
je fail
+ movl %esi, BP_code32_start(%eax)
popl %ecx
pushl %eax
pushl %ecx
@@ -90,12 +91,7 @@ fail:
hlt
jmp fail
2:
- call 3f
-3:
- popl %eax
- subl $3b, %eax
- subl BP_pref_address(%esi), %eax
- add BP_code32_start(%esi), %eax
+ movl BP_code32_start(%esi), %eax
leal preferred_addr(%eax), %eax
jmp *%eax
diff --git a/arch/x86/boot/compressed/head_64.S b/arch/x86/boot/compressed/head_64.S
index 57e58a5fa210..0d558ee899ae 100644
--- a/arch/x86/boot/compressed/head_64.S
+++ b/arch/x86/boot/compressed/head_64.S
@@ -261,6 +261,8 @@ ENTRY(efi_pe_entry)
cmpq $0,%rax
je fail
mov %rax, %rsi
+ leaq startup_32(%rip), %rax
+ movl %eax, BP_code32_start(%rsi)
jmp 2f /* Skip the relocation */
handover_entry:
@@ -284,12 +286,7 @@ fail:
hlt
jmp fail
2:
- call 3f
-3:
- popq %rax
- subq $3b, %rax
- subq BP_pref_address(%rsi), %rax
- add BP_code32_start(%esi), %eax
+ movl BP_code32_start(%esi), %eax
leaq preferred_addr(%rax), %rax
jmp *%rax
diff --git a/arch/x86/boot/compressed/misc.c b/arch/x86/boot/compressed/misc.c
index 196eaf373a06..17684615374b 100644
--- a/arch/x86/boot/compressed/misc.c
+++ b/arch/x86/boot/compressed/misc.c
@@ -10,6 +10,7 @@
*/
#include "misc.h"
+#include "../string.h"
/* WARNING!!
* This code is compiled with -fPIC and it is relocated dynamically
@@ -97,8 +98,14 @@
*/
#define STATIC static
-#undef memset
#undef memcpy
+
+/*
+ * Use a normal definition of memset() from string.c. There are already
+ * included header files which expect a definition of memset() and by
+ * the time we define memset macro, it is too late.
+ */
+#undef memset
#define memzero(s, n) memset((s), 0, (n))
@@ -109,9 +116,6 @@ static void error(char *m);
*/
struct boot_params *real_mode; /* Pointer to real-mode data */
-void *memset(void *s, int c, size_t n);
-void *memcpy(void *dest, const void *src, size_t n);
-
memptr free_mem_ptr;
memptr free_mem_end_ptr;
@@ -216,45 +220,6 @@ void __putstr(const char *s)
outb(0xff & (pos >> 1), vidport+1);
}
-void *memset(void *s, int c, size_t n)
-{
- int i;
- char *ss = s;
-
- for (i = 0; i < n; i++)
- ss[i] = c;
- return s;
-}
-#ifdef CONFIG_X86_32
-void *memcpy(void *dest, const void *src, size_t n)
-{
- int d0, d1, d2;
- asm volatile(
- "rep ; movsl\n\t"
- "movl %4,%%ecx\n\t"
- "rep ; movsb\n\t"
- : "=&c" (d0), "=&D" (d1), "=&S" (d2)
- : "0" (n >> 2), "g" (n & 3), "1" (dest), "2" (src)
- : "memory");
-
- return dest;
-}
-#else
-void *memcpy(void *dest, const void *src, size_t n)
-{
- long d0, d1, d2;
- asm volatile(
- "rep ; movsq\n\t"
- "movq %4,%%rcx\n\t"
- "rep ; movsb\n\t"
- : "=&c" (d0), "=&D" (d1), "=&S" (d2)
- : "0" (n >> 3), "g" (n & 7), "1" (dest), "2" (src)
- : "memory");
-
- return dest;
-}
-#endif
-
static void error(char *x)
{
error_putstr("\n\n");
diff --git a/arch/x86/boot/compressed/string.c b/arch/x86/boot/compressed/string.c
index ffb9c5c9d748..f3c57e341402 100644
--- a/arch/x86/boot/compressed/string.c
+++ b/arch/x86/boot/compressed/string.c
@@ -1,11 +1,45 @@
#include "misc.h"
+#include "../string.c"
+
+/* misc.h might pull in string_32.h which has a macro for memcpy. undef that */
+#undef memcpy
-int memcmp(const void *s1, const void *s2, size_t len)
+#ifdef CONFIG_X86_32
+void *memcpy(void *dest, const void *src, size_t n)
{
- u8 diff;
- asm("repe; cmpsb; setnz %0"
- : "=qm" (diff), "+D" (s1), "+S" (s2), "+c" (len));
- return diff;
+ int d0, d1, d2;
+ asm volatile(
+ "rep ; movsl\n\t"
+ "movl %4,%%ecx\n\t"
+ "rep ; movsb\n\t"
+ : "=&c" (d0), "=&D" (d1), "=&S" (d2)
+ : "0" (n >> 2), "g" (n & 3), "1" (dest), "2" (src)
+ : "memory");
+
+ return dest;
}
+#else
+void *memcpy(void *dest, const void *src, size_t n)
+{
+ long d0, d1, d2;
+ asm volatile(
+ "rep ; movsq\n\t"
+ "movq %4,%%rcx\n\t"
+ "rep ; movsb\n\t"
+ : "=&c" (d0), "=&D" (d1), "=&S" (d2)
+ : "0" (n >> 3), "g" (n & 7), "1" (dest), "2" (src)
+ : "memory");
-#include "../string.c"
+ return dest;
+}
+#endif
+
+void *memset(void *s, int c, size_t n)
+{
+ int i;
+ char *ss = s;
+
+ for (i = 0; i < n; i++)
+ ss[i] = c;
+ return s;
+}
diff --git a/arch/x86/boot/cpucheck.c b/arch/x86/boot/cpucheck.c
index f0d0b20fe149..1fd7d575092e 100644
--- a/arch/x86/boot/cpucheck.c
+++ b/arch/x86/boot/cpucheck.c
@@ -27,6 +27,7 @@
#include <asm/processor-flags.h>
#include <asm/required-features.h>
#include <asm/msr-index.h>
+#include "string.h"
static u32 err_flags[NCAPINTS];
diff --git a/arch/x86/boot/edd.c b/arch/x86/boot/edd.c
index c501a5b466f8..223e42527077 100644
--- a/arch/x86/boot/edd.c
+++ b/arch/x86/boot/edd.c
@@ -15,6 +15,7 @@
#include "boot.h"
#include <linux/edd.h>
+#include "string.h"
#if defined(CONFIG_EDD) || defined(CONFIG_EDD_MODULE)
diff --git a/arch/x86/boot/main.c b/arch/x86/boot/main.c
index cf6083d444f4..fd6c9f236996 100644
--- a/arch/x86/boot/main.c
+++ b/arch/x86/boot/main.c
@@ -14,6 +14,7 @@
*/
#include "boot.h"
+#include "string.h"
struct boot_params boot_params __attribute__((aligned(16)));
diff --git a/arch/x86/boot/regs.c b/arch/x86/boot/regs.c
index 958019b1cfa5..c0fb356a3092 100644
--- a/arch/x86/boot/regs.c
+++ b/arch/x86/boot/regs.c
@@ -17,6 +17,7 @@
*/
#include "boot.h"
+#include "string.h"
void initregs(struct biosregs *reg)
{
diff --git a/arch/x86/boot/string.c b/arch/x86/boot/string.c
index 574dedfe2890..5339040ef86e 100644
--- a/arch/x86/boot/string.c
+++ b/arch/x86/boot/string.c
@@ -14,6 +14,20 @@
#include "boot.h"
+/*
+ * This file gets included in compressed/string.c which might pull in
+ * string_32.h and which in turn maps memcmp to __builtin_memcmp(). Undo
+ * that first.
+ */
+#undef memcmp
+int memcmp(const void *s1, const void *s2, size_t len)
+{
+ u8 diff;
+ asm("repe; cmpsb; setnz %0"
+ : "=qm" (diff), "+D" (s1), "+S" (s2), "+c" (len));
+ return diff;
+}
+
int strcmp(const char *str1, const char *str2)
{
const unsigned char *s1 = (const unsigned char *)str1;
diff --git a/arch/x86/boot/string.h b/arch/x86/boot/string.h
new file mode 100644
index 000000000000..725e820602b1
--- /dev/null
+++ b/arch/x86/boot/string.h
@@ -0,0 +1,21 @@
+#ifndef BOOT_STRING_H
+#define BOOT_STRING_H
+
+/* Undef any of these macros coming from string_32.h. */
+#undef memcpy
+#undef memset
+#undef memcmp
+
+void *memcpy(void *dst, const void *src, size_t len);
+void *memset(void *dst, int c, size_t len);
+int memcmp(const void *s1, const void *s2, size_t len);
+
+/*
+ * Access builtin version by default. If one needs to use optimized version,
+ * do "undef memcpy" in .c file and link against right string.c
+ */
+#define memcpy(d,s,l) __builtin_memcpy(d,s,l)
+#define memset(d,c,l) __builtin_memset(d,c,l)
+#define memcmp __builtin_memcmp
+
+#endif /* BOOT_STRING_H */
diff --git a/arch/x86/boot/video-vesa.c b/arch/x86/boot/video-vesa.c
index 11e8c6eb80a1..ba3e100654db 100644
--- a/arch/x86/boot/video-vesa.c
+++ b/arch/x86/boot/video-vesa.c
@@ -16,6 +16,7 @@
#include "boot.h"
#include "video.h"
#include "vesa.h"
+#include "string.h"
/* VESA information */
static struct vesa_general_info vginfo;
generated by cgit v1.2.3 (git 2.25.1) at 2025-01-13 14:15:58 +0000