This commit was manufactured by cvs2svn to create branch 'vserver'.

[linux-2.6.git] / arch / m68knommu / platform / 68328 / head-rom.S

diff --git a/arch/m68knommu/platform/68328/head-rom.S b/arch/m68knommu/platform/68328/head-rom.S
new file mode 100644 (file)
index 0000000..2b448a2
--- /dev/null
+++ b/arch/m68knommu/platform/68328/head-rom.S
@@ -0,0 +1,109 @@
+#include <linux/config.h>
+       
+       .global _start
+       .global _stext
+
+       .global _rambase
+       .global _ramvec
+       .global _ramstart
+       .global _ramend
+
+#ifdef CONFIG_INIT_LCD
+       .global splash_bits
+#endif
+
+       .data
+
+/*
+ *      Set up the usable of RAM stuff. Size of RAM is determined then
+ *      an initial stack set up at the end.
+ */
+.align 4
+_ramvec:
+.long   0
+_rambase:
+.long   0
+_ramstart:
+.long   0
+_ramend:
+.long   0
+
+#ifdef CONFIG_INIT_LCD
+splash_bits:
+#include "bootlogo.rh"
+#endif
+       
+       .text
+_start:
+_stext:        movew   #0x2700,%sr
+#ifdef CONFIG_INIT_LCD
+       movel   #splash_bits, 0xfffffA00 /* LSSA */
+       moveb   #0x28,   0xfffffA05     /* LVPW */
+       movew   #0x280,  0xFFFFFa08     /* LXMAX */
+       movew   #0x1df,  0xFFFFFa0a     /* LYMAX */
+       moveb   #0,      0xfffffa29     /* LBAR */
+       moveb   #0,      0xfffffa25     /* LPXCD */
+       moveb   #0x08,   0xFFFFFa20     /* LPICF */
+       moveb   #0x01,   0xFFFFFA21     /* -ve pol */
+       moveb   #0x81,   0xfffffA27     /* LCKCON */
+       movew   #0xff00, 0xfffff412     /* LCD pins */
+#endif
+       moveal  #__ramend-CONFIG_MEMORY_RESERVE*0x100000 - 0x10, %sp
+       movew   #32767, %d0  /* PLL settle wait loop */
+1:     subq    #1, %d0
+       bne     1b
+
+       /* Copy data segment from ROM to RAM */
+       moveal  #_etext, %a0
+       moveal  #_sdata, %a1
+       moveal  #_edata, %a2
+
+       /* Copy %a0 to %a1 until %a1 == %a2 */
+1:     movel   %a0@+, %a1@+
+       cmpal   %a1, %a2
+       bhi     1b
+
+       moveal  #_sbss, %a0
+       moveal  #_ebss, %a1
+       /* Copy 0 to %a0 until %a0 == %a1 */
+       
+1:
+       clrl    %a0@+
+       cmpal   %a0, %a1
+       bhi     1b
+
+        movel   #_sdata, %d0    
+        movel   %d0,    _rambase        
+        movel   #_ebss,  %d0
+        movel   %d0,    _ramstart
+       movel   #__ramend-CONFIG_MEMORY_RESERVE*0x100000, %d0
+       movel   %d0,    _ramend
+       movel   #__ramvec,      %d0
+       movel   %d0,    _ramvec
+       
+/*
+ * load the current task pointer and stack
+ */
+       lea     init_thread_union, %a0
+       lea     0x2000(%a0), %sp
+
+1:     jsr     start_kernel
+        bra 1b
+_exit:
+
+       jmp     _exit
+
+
+putc:
+       moveb   %d7,0xfffff907
+1:
+       movew   0xfffff906, %d7
+       andw    #0x2000, %d7
+       beq     1b
+       rts
+
+       .data
+env:
+       .long   0
+       .text
+