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1#include <linux/linkage.h>
2#include <linux/init.h>
3
4#include <asm/entry.h>
5#include <asm/page.h>
6#include <asm/contregs.h>
7#include <asm/sun3-head.h>
8
9PSL_HIGHIPL = 0x2700
10NBSG = 0x20000
11ICACHE_ONLY = 0x00000009
12CACHES_OFF = 0x00000008 | actually a clear and disable --m
13#define MAS_STACK INT_STACK
14ROOT_TABLE_SIZE = 128
15PAGESIZE = 8192
16SUN3_INVALID_PMEG = 255
17.globl bootup_user_stack
18.globl bootup_kernel_stack
19.globl pg0
20.globl swapper_pg_dir
21.globl kernel_pmd_table
22.globl availmem
23.global m68k_pgtable_cachemode
24.global kpt
25| todo: all these should be in bss!
26swapper_pg_dir: .skip 0x2000
27pg0: .skip 0x2000
28kernel_pmd_table: .skip 0x2000
29
30.globl kernel_pg_dir
31.equ kernel_pg_dir,kernel_pmd_table
32
33 __HEAD
34ENTRY(_stext)
35ENTRY(_start)
36
37/* Firstly, disable interrupts and set up function codes. */
38 movew #PSL_HIGHIPL, %sr
39 moveq #FC_CONTROL, %d0
40 movec %d0, %sfc
41 movec %d0, %dfc
42
43/* Make sure we're in context zero. */
44 moveq #0, %d0
45 movsb %d0, AC_CONTEXT
46
47/* map everything the bootloader left us into high memory, clean up the
48 excess later */
49 lea (AC_SEGMAP+0),%a0
50 lea (AC_SEGMAP+KERNBASE),%a1
511:
52 movsb %a0@, %d1
53 movsb %d1, %a1@
54 cmpib #SUN3_INVALID_PMEG, %d1
55 beq 2f
56 addl #NBSG,%a0
57 addl #NBSG,%a1
58 jmp 1b
59
602:
61
62/* Disable caches and jump to high code. */
63 moveq #ICACHE_ONLY,%d0 | Cache disabled until we're ready to enable it
64 movc %d0, %cacr | is this the right value? (yes --m)
65 jmp 1f:l
66
67/* Following code executes at high addresses (0xE000xxx). */
681: lea init_task,%curptr | get initial thread...
69 lea init_thread_union+THREAD_SIZE,%sp | ...and its stack.
70
71/* Point MSP at an invalid page to trap if it's used. --m */
72 movl #(PAGESIZE),%d0
73 movc %d0,%msp
74 moveq #-1,%d0
75 movsb %d0,(AC_SEGMAP+0x0)
76
77 jbsr sun3_init
78
79 jbsr base_trap_init
80
81 jbsr start_kernel
82 trap #15
83
84 .data
85 .even
86kpt:
87 .long 0
88availmem:
89 .long 0
90| todo: remove next two. --m
91is_medusa:
92 .long 0
93m68k_pgtable_cachemode:
94 .long 0
95
1/* SPDX-License-Identifier: GPL-2.0 */
2#include <linux/linkage.h>
3#include <linux/init.h>
4
5#include <asm/entry.h>
6#include <asm/page.h>
7#include <asm/contregs.h>
8#include <asm/sun3-head.h>
9
10PSL_HIGHIPL = 0x2700
11NBSG = 0x20000
12ICACHE_ONLY = 0x00000009
13CACHES_OFF = 0x00000008 | actually a clear and disable --m
14#define MAS_STACK INT_STACK
15ROOT_TABLE_SIZE = 128
16PAGESIZE = 8192
17SUN3_INVALID_PMEG = 255
18.globl bootup_user_stack
19.globl bootup_kernel_stack
20.globl pg0
21.globl swapper_pg_dir
22.globl kernel_pmd_table
23.globl availmem
24.global m68k_pgtable_cachemode
25.global kpt
26| todo: all these should be in bss!
27swapper_pg_dir: .skip 0x2000
28pg0: .skip 0x2000
29kernel_pmd_table: .skip 0x2000
30
31.globl kernel_pg_dir
32.equ kernel_pg_dir,kernel_pmd_table
33
34 __HEAD
35ENTRY(_stext)
36ENTRY(_start)
37
38/* Firstly, disable interrupts and set up function codes. */
39 movew #PSL_HIGHIPL, %sr
40 moveq #FC_CONTROL, %d0
41 movec %d0, %sfc
42 movec %d0, %dfc
43
44/* Make sure we're in context zero. */
45 moveq #0, %d0
46 movsb %d0, AC_CONTEXT
47
48/* map everything the bootloader left us into high memory, clean up the
49 excess later */
50 lea (AC_SEGMAP+0),%a0
51 lea (AC_SEGMAP+KERNBASE),%a1
521:
53 movsb %a0@, %d1
54 movsb %d1, %a1@
55 cmpib #SUN3_INVALID_PMEG, %d1
56 beq 2f
57 addl #NBSG,%a0
58 addl #NBSG,%a1
59 jmp 1b
60
612:
62
63/* Disable caches and jump to high code. */
64 moveq #ICACHE_ONLY,%d0 | Cache disabled until we're ready to enable it
65 movc %d0, %cacr | is this the right value? (yes --m)
66 jmp 1f:l
67
68/* Following code executes at high addresses (0xE000xxx). */
691: lea init_task,%curptr | get initial thread...
70 lea init_thread_union+THREAD_SIZE,%sp | ...and its stack.
71
72/* Point MSP at an invalid page to trap if it's used. --m */
73 movl #(PAGESIZE),%d0
74 movc %d0,%msp
75 moveq #-1,%d0
76 movsb %d0,(AC_SEGMAP+0x0)
77
78 jbsr sun3_init
79
80 jbsr base_trap_init
81
82 jbsr start_kernel
83 trap #15
84
85 .data
86 .even
87kpt:
88 .long 0
89availmem:
90 .long 0
91| todo: remove next two. --m
92is_medusa:
93 .long 0
94m68k_pgtable_cachemode:
95 .long 0
96