#include <asm/desc.h>
#include <asm/cache.h>
#include <asm/thread_info.h>
-#include <asm/asm_offsets.h>
+#include <asm/asm-offsets.h>
#include <asm/setup.h>
/*
* References to members of the new_cpu_data structure.
*/
-#define CPU_PARAMS new_cpu_data
-#define X86 CPU_PARAMS+0
-#define X86_VENDOR CPU_PARAMS+1
-#define X86_MODEL CPU_PARAMS+2
-#define X86_MASK CPU_PARAMS+3
-#define X86_HARD_MATH CPU_PARAMS+6
-#define X86_CPUID CPU_PARAMS+8
-#define X86_CAPABILITY CPU_PARAMS+12
-#define X86_VENDOR_ID CPU_PARAMS+36 /* offset dependent on NCAPINTS */
+#define X86 new_cpu_data+CPUINFO_x86
+#define X86_VENDOR new_cpu_data+CPUINFO_x86_vendor
+#define X86_MODEL new_cpu_data+CPUINFO_x86_model
+#define X86_MASK new_cpu_data+CPUINFO_x86_mask
+#define X86_HARD_MATH new_cpu_data+CPUINFO_hard_math
+#define X86_CPUID new_cpu_data+CPUINFO_cpuid_level
+#define X86_CAPABILITY new_cpu_data+CPUINFO_x86_capability
+#define X86_VENDOR_ID new_cpu_data+CPUINFO_x86_vendor_id
/*
* This is how much memory *in addition to the memory covered up to
subl %edi,%ecx
shrl $2,%ecx
rep ; stosl
+/*
+ * Copy bootup parameters out of the way.
+ * Note: %esi still has the pointer to the real-mode data.
+ * With the kexec as boot loader, parameter segment might be loaded beyond
+ * kernel image and might not even be addressable by early boot page tables.
+ * (kexec on panic case). Hence copy out the parameters before initializing
+ * page tables.
+ */
+ movl $(boot_params - __PAGE_OFFSET),%edi
+ movl $(PARAM_SIZE/4),%ecx
+ cld
+ rep
+ movsl
+ movl boot_params - __PAGE_OFFSET + NEW_CL_POINTER,%esi
+ andl %esi,%esi
+ jnz 2f # New command line protocol
+ cmpw $(OLD_CL_MAGIC),OLD_CL_MAGIC_ADDR
+ jne 1f
+ movzwl OLD_CL_OFFSET,%esi
+ addl $(OLD_CL_BASE_ADDR),%esi
+2:
+ movl $(saved_command_line - __PAGE_OFFSET),%edi
+ movl $(COMMAND_LINE_SIZE/4),%ecx
+ rep
+ movsl
+1:
/*
* Initialize page tables. This creates a PDE and a set of page
movl %eax,%fs
movl %eax,%gs
- xorl %ebx,%ebx
- incl %ebx /* This is a secondary processor (AP) */
-
/*
* New page tables may be in 4Mbyte page mode and may
* be using the global pages.
#define cr4_bits mmu_cr4_features-__PAGE_OFFSET
movl cr4_bits,%edx
andl %edx,%edx
- jz 3f
+ jz 6f
movl %cr4,%eax # Turn on paging options (PSE,PAE,..)
orl %edx,%eax
movl %eax,%cr4
+ btl $5, %eax # check if PAE is enabled
+ jnc 6f
+
+ /* Check if extended functions are implemented */
+ movl $0x80000000, %eax
+ cpuid
+ cmpl $0x80000000, %eax
+ jbe 6f
+ mov $0x80000001, %eax
+ cpuid
+ /* Execute Disable bit supported? */
+ btl $20, %edx
+ jnc 6f
+
+ /* Setup EFER (Extended Feature Enable Register) */
+ movl $0xc0000080, %ecx
+ rdmsr
+
+ btsl $11, %eax
+ /* Make changes effective */
+ wrmsr
+
+6:
+ /* This is a secondary processor (AP) */
+ xorl %ebx,%ebx
+ incl %ebx
+
3:
#endif /* CONFIG_SMP */
*/
call setup_idt
-/*
- * Copy bootup parameters out of the way.
- * Note: %esi still has the pointer to the real-mode data.
- */
- movl $boot_params,%edi
- movl $(PARAM_SIZE/4),%ecx
- cld
- rep
- movsl
- movl boot_params+NEW_CL_POINTER,%esi
- andl %esi,%esi
- jnz 2f # New command line protocol
- cmpw $(OLD_CL_MAGIC),OLD_CL_MAGIC_ADDR
- jne 1f
- movzwl OLD_CL_OFFSET,%esi
- addl $(OLD_CL_BASE_ADDR),%esi
-2:
- movl $saved_command_line,%edi
- movl $(COMMAND_LINE_SIZE/4),%ecx
- rep
- movsl
-1:
checkCPUtype:
movl $-1,X86_CPUID # -1 for no CPUID initially
movl %eax,%cr0
call check_x87
- incb ready
lgdt cpu_gdt_descr
lidt idt_descr
ljmp $(__KERNEL_CS),$1f
lldt %ax
cld # gcc2 wants the direction flag cleared at all times
#ifdef CONFIG_SMP
- movb ready, %cl
- cmpb $1,%cl
+ movb ready, %cl
+ movb $1, ready
+ cmpb $0,%cl
je 1f # the first CPU calls start_kernel
# all other CPUs call initialize_secondary
call initialize_secondary
ALIGN
ignore_int:
cld
+#ifdef CONFIG_PRINTK
pushl %eax
pushl %ecx
pushl %edx
pushl 32(%esp)
pushl 40(%esp)
pushl $int_msg
+#ifdef CONFIG_EARLY_PRINTK
+ call early_printk
+#else
call printk
+#endif
addl $(5*4),%esp
popl %ds
popl %es
popl %edx
popl %ecx
popl %eax
+#endif
iret
/*
.globl boot_gdt_descr
.globl idt_descr
-.globl cpu_gdt_descr
ALIGN
# early boot GDT descriptor (must use 1:1 address mapping)
.word GDT_ENTRIES*8-1
.long cpu_gdt_table
- .fill NR_CPUS-1,8,0 # space for the other GDT descriptors
-
/*
* The boot_gdt_table must mirror the equivalent in setup.S and is
* used only for booting.
/*
* The Global Descriptor Table contains 28 quadwords, per-CPU.
*/
- .align PAGE_SIZE_asm
+ .align L1_CACHE_BYTES
ENTRY(cpu_gdt_table)
.quad 0x0000000000000000 /* NULL descriptor */
.quad 0x0000000000000000 /* 0x0b reserved */
.quad 0x0000000000000000 /* 0x80 TSS descriptor */
.quad 0x0000000000000000 /* 0x88 LDT descriptor */
- /* Segments used for calling PnP BIOS */
- .quad 0x00c09a0000000000 /* 0x90 32-bit code */
- .quad 0x00809a0000000000 /* 0x98 16-bit code */
- .quad 0x0080920000000000 /* 0xa0 16-bit data */
- .quad 0x0080920000000000 /* 0xa8 16-bit data */
- .quad 0x0080920000000000 /* 0xb0 16-bit data */
+ /*
+ * Segments used for calling PnP BIOS have byte granularity.
+ * They code segments and data segments have fixed 64k limits,
+ * the transfer segment sizes are set at run time.
+ */
+ .quad 0x00409a000000ffff /* 0x90 32-bit code */
+ .quad 0x00009a000000ffff /* 0x98 16-bit code */
+ .quad 0x000092000000ffff /* 0xa0 16-bit data */
+ .quad 0x0000920000000000 /* 0xa8 16-bit data */
+ .quad 0x0000920000000000 /* 0xb0 16-bit data */
+
/*
* The APM segments have byte granularity and their bases
- * and limits are set at run time.
+ * are set at run time. All have 64k limits.
*/
- .quad 0x00409a0000000000 /* 0xb8 APM CS code */
- .quad 0x00009a0000000000 /* 0xc0 APM CS 16 code (16 bit) */
- .quad 0x0040920000000000 /* 0xc8 APM DS data */
+ .quad 0x00409a000000ffff /* 0xb8 APM CS code */
+ .quad 0x00009a000000ffff /* 0xc0 APM CS 16 code (16 bit) */
+ .quad 0x004092000000ffff /* 0xc8 APM DS data */
- .quad 0x0000000000000000 /* 0xd0 - unused */
+ .quad 0x0000920000000000 /* 0xd0 - ESPFIX 16-bit SS */
.quad 0x0000000000000000 /* 0xd8 - unused */
.quad 0x0000000000000000 /* 0xe0 - unused */
.quad 0x0000000000000000 /* 0xe8 - unused */
.quad 0x0000000000000000 /* 0xf0 - unused */
.quad 0x0000000000000000 /* 0xf8 - GDT entry 31: double-fault TSS */
-#ifdef CONFIG_SMP
- .fill (NR_CPUS-1)*GDT_ENTRIES,8,0 /* other CPU's GDT */
-#endif
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