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#include <linux/linkage.h>
#include <asm/page.h>
#include <asm/contregs.h>
#include <asm/sun3-head.h>
PSL_HIGHIPL = 0x2700
NBSG = 0x20000
ICACHE_ONLY = 0x00000009
CACHES_OFF = 0x00000008 | actually a clear and disable --m
#define MAS_STACK INT_STACK
ROOT_TABLE_SIZE = 128
PAGESIZE = 8192
SUN3_INVALID_PMEG = 255
.globl SYMBOL_NAME(bootup_user_stack)
.globl SYMBOL_NAME(bootup_kernel_stack)
.globl SYMBOL_NAME(pg0)
.globl SYMBOL_NAME(empty_bad_page)
.globl SYMBOL_NAME(empty_bad_page_table)
.globl SYMBOL_NAME(empty_zero_page)
.globl SYMBOL_NAME(swapper_pg_dir)
.globl SYMBOL_NAME(kernel_pmd_table)
.globl SYMBOL_NAME(availmem)
.global SYMBOL_NAME(m68k_pgtable_cachemode)
.global SYMBOL_NAME(kpt)
| todo: all these should be in bss!
SYMBOL_NAME(swapper_pg_dir): .skip 0x2000
SYMBOL_NAME(pg0): .skip 0x2000
SYMBOL_NAME(empty_bad_page): .skip 0x2000
SYMBOL_NAME(empty_bad_page_table): .skip 0x2000
SYMBOL_NAME(kernel_pmd_table): .skip 0x2000
SYMBOL_NAME(empty_zero_page): .skip 0x2000
.globl SYMBOL_NAME(kernel_pg_dir)
.equ SYMBOL_NAME(kernel_pg_dir),SYMBOL_NAME(kernel_pmd_table)
.section .head
ENTRY(_stext)
ENTRY(_start)
/* Firstly, disable interrupts and set up function codes. */
movew #PSL_HIGHIPL, %sr
moveq #FC_CONTROL, %d0
movec %d0, %sfc
movec %d0, %dfc
/* Make sure we're in context zero. */
moveq #0, %d0
movsb %d0, AC_CONTEXT
/* map everything the bootloader left us into high memory, clean up the
excess later */
lea (AC_SEGMAP+0),%a0
lea (AC_SEGMAP+KERNBASE),%a1
1:
movsb %a0@, %d1
movsb %d1, %a1@
cmpib #SUN3_INVALID_PMEG, %d1
beq 2f
addl #NBSG,%a0
addl #NBSG,%a1
jmp 1b
2:
/* Disable caches and jump to high code. */
moveq #ICACHE_ONLY,%d0 | Cache disabled until we're ready to enable it
movc %d0, %cacr | is this the right value? (yes --m)
jmp 1f:l
/* Following code executes at high addresses (0xE000xxx). */
1: lea SYMBOL_NAME(init_task_union),%a2 | get initial thread...
lea %a2@(KTHREAD_SIZE),%sp | ...and its stack.
/* copy bootinfo records from the loader to _end */
lea SYMBOL_NAME(_end), %a1
lea BI_START, %a0
/* number of longs to copy */
movel %a0@, %d0
1: addl #4, %a0
movel %a0@, %a1@
addl #4, %a1
dbf %d0, 1b
/* Point MSP at an invalid page to trap if it's used. --m */
movl #(PAGESIZE),%d0
movc %d0,%msp
moveq #-1,%d0
movsb %d0,(AC_SEGMAP+0x0)
jbsr SYMBOL_NAME(sun3_init)
jbsr SYMBOL_NAME(base_trap_init)
jbsr SYMBOL_NAME(start_kernel)
trap #15
.data
.even
SYMBOL_NAME_LABEL(kpt)
.long 0
SYMBOL_NAME_LABEL(availmem)
.long 0
| todo: remove next two. --m
SYMBOL_NAME_LABEL(is_medusa)
.long 0
SYMBOL_NAME_LABEL(m68k_pgtable_cachemode)
.long 0
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