sh: Add support SH3 and SH7720

[oweals/u-boot.git] / cpu / i386 / start16.S

diff --git a/cpu/i386/start16.S b/cpu/i386/start16.S
index 590a5a6c9d7c2f2616c1d684c8db850feaeb678a..239f2ff39b2759fe9668651b09dd74a1fdbfe9c3 100644 (file)
--- a/cpu/i386/start16.S
+++ b/cpu/i386/start16.S
@@ -1,7 +1,7 @@
 /*
- *  U-boot - i386 Startup Code 
+ *  U-boot - i386 Startup Code
  *
- *  Copyright (c) 2002 Omicron Ceti AB, Daniel Engström <denaiel@omicron.se>
+ *  Copyright (c) 2002, 2003 Omicron Ceti AB, Daniel Engström <denaiel@omicron.se>
  *
  * See file CREDITS for list of people who contributed to this
  * project.
@@ -30,37 +30,37 @@
 .section .start16, "ax"
 .code16
 .globl start16
-start16: 
+start16:
        /* First we let the BSP do some early initialization
         * this code have to map the flash to its final position
         */
        mov     $board_init16_ret, %bp
        jmp     board_init16
-board_init16_ret:      
-       
+board_init16_ret:
+
        /* Turn of cache (this might require a 486-class CPU) */
-        movl    %cr0, %eax
-        orl     $060000000,%eax
-        movl    %eax, %cr0
-        wbinvd                      
-       
+       movl    %cr0, %eax
+       orl     $0x60000000,%eax
+       movl    %eax, %cr0
+       wbinvd
+
        /* load the descriptor tables */
 o32 cs lidt    idt_ptr
-o32 cs lgdt    gdt_ptr          
+o32 cs lgdt    gdt_ptr
 
 
        /* Now, we enter protected mode */
-        movl    %cr0, %eax               
-        orl     $1,%eax                  
-        movl    %eax, %cr0            
-       
+       movl    %cr0, %eax
+       orl     $1,%eax
+       movl    %eax, %cr0
+
        /* Flush the prefetch queue */
-        jmp     ff        
+       jmp     ff
 ff:
 
        /* Finally jump to the 32bit initialization code */
-       movw    $code32start, %ax 
-        movw    %ax,%bp
+       movw    $code32start, %ax
+       movw    %ax,%bp
 o32 cs ljmp    *(%bp)
 
        /* 48-bit far pointer */
@@ -71,17 +71,17 @@ code32start:
 idt_ptr:
        .word   0                               /* limit */
        .long   0                               /* base */
-       
+
 gdt_ptr:
        .word   0x30                            /* limit (48 bytes = 6 GDT entries) */
        .long   BOOT_SEG + gdt                  /* base */
 
-       /* The GDT table ... 
+       /* The GDT table ...
         *
-        *       Selector       Type 
+        *       Selector       Type
         *       0x00           NULL
         *       0x08           Unused
-        *       0x10           32bit code 
+        *       0x10           32bit code
         *       0x18           32bit data/stack
         *       0x20           16bit code
         *       0x28           16bit data/stack
@@ -100,12 +100,12 @@ gdt:
        .word   0x0                             /* base address = 0 */
        .word   0x9300                          /* data read/write */
        .word   0x00CF                          /* granularity = 4096, 386 (+5th nibble of limit) */
-                                               
+
        .word   0xFFFF                          /* 64kb */
        .word   0                               /* base address = 0 */
        .word   0x9b00                          /* data read/write */
        .word   0x0010                          /* granularity = 1  (+5th nibble of limit) */
-       
+
        .word   0xFFFF                          /* 64kb */
        .word   0                               /* base address = 0 */
        .word   0x9300                          /* data read/write */