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1/*
2 * linux/arch/m68k/sun3/config.c
3 *
4 * Copyright (C) 1996,1997 Pekka Pietik{inen
5 *
6 * This file is subject to the terms and conditions of the GNU General Public
7 * License. See the file COPYING in the main directory of this archive
8 * for more details.
9 */
10
11#include <linux/types.h>
12#include <linux/kernel.h>
13#include <linux/mm.h>
14#include <linux/seq_file.h>
15#include <linux/tty.h>
16#include <linux/console.h>
17#include <linux/init.h>
18#include <linux/memblock.h>
19#include <linux/platform_device.h>
20
21#include <asm/oplib.h>
22#include <asm/setup.h>
23#include <asm/contregs.h>
24#include <asm/movs.h>
25#include <asm/pgtable.h>
26#include <asm/pgalloc.h>
27#include <asm/sun3-head.h>
28#include <asm/sun3mmu.h>
29#include <asm/machdep.h>
30#include <asm/machines.h>
31#include <asm/idprom.h>
32#include <asm/intersil.h>
33#include <asm/irq.h>
34#include <asm/sections.h>
35#include <asm/segment.h>
36#include <asm/sun3ints.h>
37
38char sun3_reserved_pmeg[SUN3_PMEGS_NUM];
39
40static void sun3_sched_init(irq_handler_t handler);
41extern void sun3_get_model (char* model);
42extern int sun3_hwclk(int set, struct rtc_time *t);
43
44volatile char* clock_va;
45extern unsigned long availmem;
46unsigned long num_pages;
47
48static void sun3_get_hardware_list(struct seq_file *m)
49{
50 seq_printf(m, "PROM Revision:\t%s\n", romvec->pv_monid);
51}
52
53void __init sun3_init(void)
54{
55 unsigned char enable_register;
56 int i;
57
58 m68k_machtype= MACH_SUN3;
59 m68k_cputype = CPU_68020;
60 m68k_fputype = FPU_68881; /* mc68881 actually */
61 m68k_mmutype = MMU_SUN3;
62 clock_va = (char *) 0xfe06000; /* dark */
63 sun3_intreg = (unsigned char *) 0xfe0a000; /* magic */
64 sun3_disable_interrupts();
65
66 prom_init((void *)LINUX_OPPROM_BEGVM);
67
68 GET_CONTROL_BYTE(AC_SENABLE,enable_register);
69 enable_register |= 0x50; /* Enable FPU */
70 SET_CONTROL_BYTE(AC_SENABLE,enable_register);
71 GET_CONTROL_BYTE(AC_SENABLE,enable_register);
72
73 /* This code looks suspicious, because it doesn't subtract
74 memory belonging to the kernel from the available space */
75
76
77 memset(sun3_reserved_pmeg, 0, sizeof(sun3_reserved_pmeg));
78
79 /* Reserve important PMEGS */
80 /* FIXME: These should be probed instead of hardcoded */
81
82 for (i=0; i<8; i++) /* Kernel PMEGs */
83 sun3_reserved_pmeg[i] = 1;
84
85 sun3_reserved_pmeg[247] = 1; /* ROM mapping */
86 sun3_reserved_pmeg[248] = 1; /* AMD Ethernet */
87 sun3_reserved_pmeg[251] = 1; /* VB area */
88 sun3_reserved_pmeg[254] = 1; /* main I/O */
89
90 sun3_reserved_pmeg[249] = 1;
91 sun3_reserved_pmeg[252] = 1;
92 sun3_reserved_pmeg[253] = 1;
93 set_fs(KERNEL_DS);
94}
95
96/* Without this, Bad Things happen when something calls arch_reset. */
97static void sun3_reboot (void)
98{
99 prom_reboot ("vmlinux");
100}
101
102static void sun3_halt (void)
103{
104 prom_halt ();
105}
106
107/* sun3 bootmem allocation */
108
109static void __init sun3_bootmem_alloc(unsigned long memory_start,
110 unsigned long memory_end)
111{
112 unsigned long start_page;
113
114 /* align start/end to page boundaries */
115 memory_start = ((memory_start + (PAGE_SIZE-1)) & PAGE_MASK);
116 memory_end = memory_end & PAGE_MASK;
117
118 start_page = __pa(memory_start) >> PAGE_SHIFT;
119 max_pfn = num_pages = __pa(memory_end) >> PAGE_SHIFT;
120
121 high_memory = (void *)memory_end;
122 availmem = memory_start;
123
124 m68k_setup_node(0);
125}
126
127
128void __init config_sun3(void)
129{
130 unsigned long memory_start, memory_end;
131
132 pr_info("ARCH: SUN3\n");
133 idprom_init();
134
135 /* Subtract kernel memory from available memory */
136
137 mach_sched_init = sun3_sched_init;
138 mach_init_IRQ = sun3_init_IRQ;
139 mach_reset = sun3_reboot;
140 mach_get_model = sun3_get_model;
141 mach_hwclk = sun3_hwclk;
142 mach_halt = sun3_halt;
143 mach_get_hardware_list = sun3_get_hardware_list;
144
145 memory_start = ((((unsigned long)_end) + 0x2000) & ~0x1fff);
146// PROM seems to want the last couple of physical pages. --m
147 memory_end = *(romvec->pv_sun3mem) + PAGE_OFFSET - 2*PAGE_SIZE;
148
149 m68k_num_memory=1;
150 m68k_memory[0].size=*(romvec->pv_sun3mem);
151
152 sun3_bootmem_alloc(memory_start, memory_end);
153}
154
155static void __init sun3_sched_init(irq_handler_t timer_routine)
156{
157 sun3_disable_interrupts();
158 intersil_clock->cmd_reg=(INTERSIL_RUN|INTERSIL_INT_DISABLE|INTERSIL_24H_MODE);
159 intersil_clock->int_reg=INTERSIL_HZ_100_MASK;
160 intersil_clear();
161 sun3_enable_irq(5);
162 intersil_clock->cmd_reg=(INTERSIL_RUN|INTERSIL_INT_ENABLE|INTERSIL_24H_MODE);
163 sun3_enable_interrupts();
164 intersil_clear();
165}
166
167#if IS_ENABLED(CONFIG_SUN3_SCSI)
168
169static const struct resource sun3_scsi_vme_rsrc[] __initconst = {
170 {
171 .flags = IORESOURCE_IRQ,
172 .start = SUN3_VEC_VMESCSI0,
173 .end = SUN3_VEC_VMESCSI0,
174 }, {
175 .flags = IORESOURCE_MEM,
176 .start = 0xff200000,
177 .end = 0xff200021,
178 }, {
179 .flags = IORESOURCE_IRQ,
180 .start = SUN3_VEC_VMESCSI1,
181 .end = SUN3_VEC_VMESCSI1,
182 }, {
183 .flags = IORESOURCE_MEM,
184 .start = 0xff204000,
185 .end = 0xff204021,
186 },
187};
188
189/*
190 * Int: level 2 autovector
191 * IO: type 1, base 0x00140000, 5 bits phys space: A<4..0>
192 */
193static const struct resource sun3_scsi_rsrc[] __initconst = {
194 {
195 .flags = IORESOURCE_IRQ,
196 .start = 2,
197 .end = 2,
198 }, {
199 .flags = IORESOURCE_MEM,
200 .start = 0x00140000,
201 .end = 0x0014001f,
202 },
203};
204
205int __init sun3_platform_init(void)
206{
207 switch (idprom->id_machtype) {
208 case SM_SUN3 | SM_3_160:
209 case SM_SUN3 | SM_3_260:
210 platform_device_register_simple("sun3_scsi_vme", -1,
211 sun3_scsi_vme_rsrc, ARRAY_SIZE(sun3_scsi_vme_rsrc));
212 break;
213 case SM_SUN3 | SM_3_50:
214 case SM_SUN3 | SM_3_60:
215 platform_device_register_simple("sun3_scsi", -1,
216 sun3_scsi_rsrc, ARRAY_SIZE(sun3_scsi_rsrc));
217 break;
218 }
219 return 0;
220}
221
222arch_initcall(sun3_platform_init);
223
224#endif
1/*
2 * linux/arch/m68k/sun3/config.c
3 *
4 * Copyright (C) 1996,1997 Pekka Pietik{inen
5 *
6 * This file is subject to the terms and conditions of the GNU General Public
7 * License. See the file COPYING in the main directory of this archive
8 * for more details.
9 */
10
11#include <linux/types.h>
12#include <linux/kernel.h>
13#include <linux/mm.h>
14#include <linux/seq_file.h>
15#include <linux/tty.h>
16#include <linux/console.h>
17#include <linux/init.h>
18#include <linux/memblock.h>
19#include <linux/platform_device.h>
20#include <linux/linkage.h>
21
22#include <asm/oplib.h>
23#include <asm/setup.h>
24#include <asm/contregs.h>
25#include <asm/movs.h>
26#include <asm/pgalloc.h>
27#include <asm/sun3-head.h>
28#include <asm/sun3mmu.h>
29#include <asm/machdep.h>
30#include <asm/machines.h>
31#include <asm/idprom.h>
32#include <asm/intersil.h>
33#include <asm/irq.h>
34#include <asm/sections.h>
35#include <asm/sun3ints.h>
36#include <asm/config.h>
37
38#include "sun3.h"
39
40char sun3_reserved_pmeg[SUN3_PMEGS_NUM];
41
42static void sun3_sched_init(void);
43
44volatile char* clock_va;
45extern unsigned long availmem;
46unsigned long num_pages;
47
48static void sun3_get_hardware_list(struct seq_file *m)
49{
50 seq_printf(m, "PROM Revision:\t%s\n", romvec->pv_monid);
51}
52
53asmlinkage void __init sun3_init(void)
54{
55 unsigned char enable_register;
56 int i;
57
58 m68k_machtype= MACH_SUN3;
59 m68k_cputype = CPU_68020;
60 m68k_fputype = FPU_68881; /* mc68881 actually */
61 m68k_mmutype = MMU_SUN3;
62 clock_va = (char *) 0xfe06000; /* dark */
63 sun3_intreg = (unsigned char *) 0xfe0a000; /* magic */
64 sun3_disable_interrupts();
65
66 prom_init((void *)LINUX_OPPROM_BEGVM);
67
68 GET_CONTROL_BYTE(AC_SENABLE,enable_register);
69 enable_register |= 0x50; /* Enable FPU */
70 SET_CONTROL_BYTE(AC_SENABLE,enable_register);
71 GET_CONTROL_BYTE(AC_SENABLE,enable_register);
72
73 /* This code looks suspicious, because it doesn't subtract
74 memory belonging to the kernel from the available space */
75
76
77 memset(sun3_reserved_pmeg, 0, sizeof(sun3_reserved_pmeg));
78
79 /* Reserve important PMEGS */
80 /* FIXME: These should be probed instead of hardcoded */
81
82 for (i=0; i<8; i++) /* Kernel PMEGs */
83 sun3_reserved_pmeg[i] = 1;
84
85 sun3_reserved_pmeg[247] = 1; /* ROM mapping */
86 sun3_reserved_pmeg[248] = 1; /* AMD Ethernet */
87 sun3_reserved_pmeg[251] = 1; /* VB area */
88 sun3_reserved_pmeg[254] = 1; /* main I/O */
89
90 sun3_reserved_pmeg[249] = 1;
91 sun3_reserved_pmeg[252] = 1;
92 sun3_reserved_pmeg[253] = 1;
93 set_fc(USER_DATA);
94}
95
96/* Without this, Bad Things happen when something calls arch_reset. */
97static void sun3_reboot (void)
98{
99 prom_reboot ("vmlinux");
100}
101
102static void sun3_halt (void)
103{
104 prom_halt ();
105}
106
107/* sun3 bootmem allocation */
108
109static void __init sun3_bootmem_alloc(unsigned long memory_start,
110 unsigned long memory_end)
111{
112 /* align start/end to page boundaries */
113 memory_start = ((memory_start + (PAGE_SIZE-1)) & PAGE_MASK);
114 memory_end = memory_end & PAGE_MASK;
115
116 max_pfn = num_pages = __pa(memory_end) >> PAGE_SHIFT;
117
118 high_memory = (void *)memory_end;
119 availmem = memory_start;
120
121 m68k_setup_node(0);
122}
123
124
125void __init config_sun3(void)
126{
127 unsigned long memory_start, memory_end;
128
129 pr_info("ARCH: SUN3\n");
130 idprom_init();
131
132 /* Subtract kernel memory from available memory */
133
134 mach_sched_init = sun3_sched_init;
135 mach_init_IRQ = sun3_init_IRQ;
136 mach_reset = sun3_reboot;
137 mach_get_model = sun3_get_model;
138 mach_hwclk = sun3_hwclk;
139 mach_halt = sun3_halt;
140 mach_get_hardware_list = sun3_get_hardware_list;
141
142 memory_start = ((((unsigned long)_end) + 0x2000) & ~0x1fff);
143// PROM seems to want the last couple of physical pages. --m
144 memory_end = *(romvec->pv_sun3mem) + PAGE_OFFSET - 2*PAGE_SIZE;
145
146 m68k_num_memory=1;
147 m68k_memory[0].size=*(romvec->pv_sun3mem);
148
149 sun3_bootmem_alloc(memory_start, memory_end);
150}
151
152static void __init sun3_sched_init(void)
153{
154 sun3_disable_interrupts();
155 intersil_clock->cmd_reg=(INTERSIL_RUN|INTERSIL_INT_DISABLE|INTERSIL_24H_MODE);
156 intersil_clock->int_reg=INTERSIL_HZ_100_MASK;
157 intersil_clear();
158 sun3_enable_irq(5);
159 intersil_clock->cmd_reg=(INTERSIL_RUN|INTERSIL_INT_ENABLE|INTERSIL_24H_MODE);
160 sun3_enable_interrupts();
161 intersil_clear();
162}
163
164#if IS_ENABLED(CONFIG_SUN3_SCSI)
165
166static const struct resource sun3_scsi_vme_rsrc[] __initconst = {
167 {
168 .flags = IORESOURCE_IRQ,
169 .start = SUN3_VEC_VMESCSI0,
170 .end = SUN3_VEC_VMESCSI0,
171 }, {
172 .flags = IORESOURCE_MEM,
173 .start = 0xff200000,
174 .end = 0xff200021,
175 }, {
176 .flags = IORESOURCE_IRQ,
177 .start = SUN3_VEC_VMESCSI1,
178 .end = SUN3_VEC_VMESCSI1,
179 }, {
180 .flags = IORESOURCE_MEM,
181 .start = 0xff204000,
182 .end = 0xff204021,
183 },
184};
185
186/*
187 * Int: level 2 autovector
188 * IO: type 1, base 0x00140000, 5 bits phys space: A<4..0>
189 */
190static const struct resource sun3_scsi_rsrc[] __initconst = {
191 {
192 .flags = IORESOURCE_IRQ,
193 .start = 2,
194 .end = 2,
195 }, {
196 .flags = IORESOURCE_MEM,
197 .start = 0x00140000,
198 .end = 0x0014001f,
199 },
200};
201
202static int __init sun3_platform_init(void)
203{
204 switch (idprom->id_machtype) {
205 case SM_SUN3 | SM_3_160:
206 case SM_SUN3 | SM_3_260:
207 platform_device_register_simple("sun3_scsi_vme", -1,
208 sun3_scsi_vme_rsrc, ARRAY_SIZE(sun3_scsi_vme_rsrc));
209 break;
210 case SM_SUN3 | SM_3_50:
211 case SM_SUN3 | SM_3_60:
212 platform_device_register_simple("sun3_scsi", -1,
213 sun3_scsi_rsrc, ARRAY_SIZE(sun3_scsi_rsrc));
214 break;
215 }
216 return 0;
217}
218
219arch_initcall(sun3_platform_init);
220
221#endif