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-rw-r--r--arch/m68k/platform/68328/head-pilot.S222
1 files changed, 222 insertions, 0 deletions
diff --git a/arch/m68k/platform/68328/head-pilot.S b/arch/m68k/platform/68328/head-pilot.S
new file mode 100644
index 00000000000..aecff532b34
--- /dev/null
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+/*
+ * linux/arch/m68knommu/platform/68328/head-pilot.S
+ * - A startup file for the MC68328
+ *
+ * Copyright (C) 1998 D. Jeff Dionne <jeff@ryeham.ee.ryerson.ca>,
+ * Kenneth Albanowski <kjahds@kjahds.com>,
+ * The Silver Hammer Group, Ltd.
+ *
+ * (c) 1995, Dionne & Associates
+ * (c) 1995, DKG Display Tech.
+ */
+
+#define ASSEMBLY
+
+#define IMMED #
+#define DBG_PUTC(x) moveb IMMED x, 0xfffff907
+
+
+.global _stext
+.global _start
+
+.global _rambase
+.global _ramvec
+.global _ramstart
+.global _ramend
+
+.global penguin_bits
+
+#ifdef CONFIG_PILOT
+
+#define IMR 0xFFFFF304
+
+ .data
+ .align 16
+
+penguin_bits:
+#include "bootlogo.rh"
+
+#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
+
+.text
+
+_start:
+_stext:
+
+
+#ifdef CONFIG_M68328
+
+#ifdef CONFIG_PILOT
+ .byte 0x4e, 0xfa, 0x00, 0x0a /* Jmp +X bytes */
+ .byte 'b', 'o', 'o', 't'
+ .word 10000
+
+ nop
+#endif
+
+ moveq #0, %d0
+ movew %d0, 0xfffff618 /* Watchdog off */
+ movel #0x00011f07, 0xfffff114 /* CS A1 Mask */
+
+ movew #0x0800, 0xfffff906 /* Ignore CTS */
+ movew #0x010b, 0xfffff902 /* BAUD to 9600 */
+
+ movew #0x2410, 0xfffff200 /* PLLCR */
+ movew #0x123, 0xfffff202 /* PLLFSR */
+
+#ifdef CONFIG_PILOT
+ moveb #0, 0xfffffA27 /* LCKCON */
+ movel #_start, 0xfffffA00 /* LSSA */
+ moveb #0xa, 0xfffffA05 /* LVPW */
+ movew #0x9f, 0xFFFFFa08 /* LXMAX */
+ movew #0x9f, 0xFFFFFa0a /* LYMAX */
+ moveb #9, 0xfffffa29 /* LBAR */
+ moveb #0, 0xfffffa25 /* LPXCD */
+ moveb #0x04, 0xFFFFFa20 /* LPICF */
+ moveb #0x58, 0xfffffA27 /* LCKCON */
+ moveb #0x85, 0xfffff429 /* PFDATA */
+ moveb #0xd8, 0xfffffA27 /* LCKCON */
+ moveb #0xc5, 0xfffff429 /* PFDATA */
+ moveb #0xd5, 0xfffff429 /* PFDATA */
+
+ moveal #0x00100000, %a3
+ moveal #0x100ffc00, %a4
+#endif /* CONFIG_PILOT */
+
+#endif /* CONFIG_M68328 */
+
+ movew #0x2700, %sr
+ lea %a4@(-4), %sp
+
+ DBG_PUTC('\r')
+ DBG_PUTC('\n')
+ DBG_PUTC('A')
+
+ moveq #0,%d0
+ movew #16384, %d0 /* PLL settle wait loop */
+L0:
+ subw #1, %d0
+ bne L0
+
+ DBG_PUTC('B')
+
+ /* Copy command line from beginning of RAM (+16) to end of bss */
+ movel #CONFIG_VECTORBASE, %d7
+ addl #16, %d7
+ moveal %d7, %a0
+ moveal #_ebss, %a1
+ lea %a1@(512), %a2
+
+ DBG_PUTC('C')
+
+ /* Copy %a0 to %a1 until %a1 == %a2 */
+L2:
+ movel %a0@+, %d0
+ movel %d0, %a1@+
+ cmpal %a1, %a2
+ bhi L2
+
+ /* Copy data+init segment from ROM to RAM */
+ moveal #_etext, %a0
+ moveal #_sdata, %a1
+ moveal #__init_end, %a2
+
+ DBG_PUTC('D')
+
+ /* Copy %a0 to %a1 until %a1 == %a2 */
+LD1:
+ movel %a0@+, %d0
+ movel %d0, %a1@+
+ cmpal %a1, %a2
+ bhi LD1
+
+ DBG_PUTC('E')
+
+ moveal #_sbss, %a0
+ moveal #_ebss, %a1
+
+ /* Copy 0 to %a0 until %a0 == %a1 */
+L1:
+ movel #0, %a0@+
+ cmpal %a0, %a1
+ bhi L1
+
+ DBG_PUTC('F')
+
+ /* Copy command line from end of bss to command line */
+ moveal #_ebss, %a0
+ moveal #command_line, %a1
+ lea %a1@(512), %a2
+
+ DBG_PUTC('G')
+
+ /* Copy %a0 to %a1 until %a1 == %a2 */
+L3:
+ movel %a0@+, %d0
+ movel %d0, %a1@+
+ cmpal %a1, %a2
+ bhi L3
+
+ movel #_sdata, %d0
+ movel %d0, _rambase
+ movel #_ebss, %d0
+ movel %d0, _ramstart
+
+ movel %a4, %d0
+ subl #4096, %d0 /* Reserve 4K of stack */
+ moveq #79, %d7
+ movel %d0, _ramend
+
+ movel %a3, %d0
+ movel %d0, rom_length
+
+ pea 0
+ pea env
+ pea %sp@(4)
+ pea 0
+
+ DBG_PUTC('H')
+
+#ifdef CONFIG_PILOT
+ movel #penguin_bits, 0xFFFFFA00
+ moveb #10, 0xFFFFFA05
+ movew #160, 0xFFFFFA08
+ movew #160, 0xFFFFFA0A
+#endif /* CONFIG_PILOT */
+
+ DBG_PUTC('I')
+
+ lea init_thread_union, %a0
+ lea 0x2000(%a0), %sp
+
+ DBG_PUTC('J')
+ DBG_PUTC('\r')
+ DBG_PUTC('\n')
+
+ jsr start_kernel
+_exit:
+
+ jmp _exit
+
+
+ .data
+env:
+ .long 0