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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/pgalloc.h>
26#include <asm/sun3-head.h>
27#include <asm/sun3mmu.h>
28#include <asm/machdep.h>
29#include <asm/machines.h>
30#include <asm/idprom.h>
31#include <asm/intersil.h>
32#include <asm/irq.h>
33#include <asm/sections.h>
34#include <asm/sun3ints.h>
35
36char sun3_reserved_pmeg[SUN3_PMEGS_NUM];
37
38static void sun3_sched_init(void);
39extern void sun3_get_model (char* model);
40extern int sun3_hwclk(int set, struct rtc_time *t);
41
42volatile char* clock_va;
43extern unsigned long availmem;
44unsigned long num_pages;
45
46static void sun3_get_hardware_list(struct seq_file *m)
47{
48 seq_printf(m, "PROM Revision:\t%s\n", romvec->pv_monid);
49}
50
51void __init sun3_init(void)
52{
53 unsigned char enable_register;
54 int i;
55
56 m68k_machtype= MACH_SUN3;
57 m68k_cputype = CPU_68020;
58 m68k_fputype = FPU_68881; /* mc68881 actually */
59 m68k_mmutype = MMU_SUN3;
60 clock_va = (char *) 0xfe06000; /* dark */
61 sun3_intreg = (unsigned char *) 0xfe0a000; /* magic */
62 sun3_disable_interrupts();
63
64 prom_init((void *)LINUX_OPPROM_BEGVM);
65
66 GET_CONTROL_BYTE(AC_SENABLE,enable_register);
67 enable_register |= 0x50; /* Enable FPU */
68 SET_CONTROL_BYTE(AC_SENABLE,enable_register);
69 GET_CONTROL_BYTE(AC_SENABLE,enable_register);
70
71 /* This code looks suspicious, because it doesn't subtract
72 memory belonging to the kernel from the available space */
73
74
75 memset(sun3_reserved_pmeg, 0, sizeof(sun3_reserved_pmeg));
76
77 /* Reserve important PMEGS */
78 /* FIXME: These should be probed instead of hardcoded */
79
80 for (i=0; i<8; i++) /* Kernel PMEGs */
81 sun3_reserved_pmeg[i] = 1;
82
83 sun3_reserved_pmeg[247] = 1; /* ROM mapping */
84 sun3_reserved_pmeg[248] = 1; /* AMD Ethernet */
85 sun3_reserved_pmeg[251] = 1; /* VB area */
86 sun3_reserved_pmeg[254] = 1; /* main I/O */
87
88 sun3_reserved_pmeg[249] = 1;
89 sun3_reserved_pmeg[252] = 1;
90 sun3_reserved_pmeg[253] = 1;
91 set_fc(USER_DATA);
92}
93
94/* Without this, Bad Things happen when something calls arch_reset. */
95static void sun3_reboot (void)
96{
97 prom_reboot ("vmlinux");
98}
99
100static void sun3_halt (void)
101{
102 prom_halt ();
103}
104
105/* sun3 bootmem allocation */
106
107static void __init sun3_bootmem_alloc(unsigned long memory_start,
108 unsigned long memory_end)
109{
110 unsigned long start_page;
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 start_page = __pa(memory_start) >> PAGE_SHIFT;
117 max_pfn = num_pages = __pa(memory_end) >> PAGE_SHIFT;
118
119 high_memory = (void *)memory_end;
120 availmem = memory_start;
121
122 m68k_setup_node(0);
123}
124
125
126void __init config_sun3(void)
127{
128 unsigned long memory_start, memory_end;
129
130 pr_info("ARCH: SUN3\n");
131 idprom_init();
132
133 /* Subtract kernel memory from available memory */
134
135 mach_sched_init = sun3_sched_init;
136 mach_init_IRQ = sun3_init_IRQ;
137 mach_reset = sun3_reboot;
138 mach_get_model = sun3_get_model;
139 mach_hwclk = sun3_hwclk;
140 mach_halt = sun3_halt;
141 mach_get_hardware_list = sun3_get_hardware_list;
142
143 memory_start = ((((unsigned long)_end) + 0x2000) & ~0x1fff);
144// PROM seems to want the last couple of physical pages. --m
145 memory_end = *(romvec->pv_sun3mem) + PAGE_OFFSET - 2*PAGE_SIZE;
146
147 m68k_num_memory=1;
148 m68k_memory[0].size=*(romvec->pv_sun3mem);
149
150 sun3_bootmem_alloc(memory_start, memory_end);
151}
152
153static void __init sun3_sched_init(void)
154{
155 sun3_disable_interrupts();
156 intersil_clock->cmd_reg=(INTERSIL_RUN|INTERSIL_INT_DISABLE|INTERSIL_24H_MODE);
157 intersil_clock->int_reg=INTERSIL_HZ_100_MASK;
158 intersil_clear();
159 sun3_enable_irq(5);
160 intersil_clock->cmd_reg=(INTERSIL_RUN|INTERSIL_INT_ENABLE|INTERSIL_24H_MODE);
161 sun3_enable_interrupts();
162 intersil_clear();
163}
164
165#if IS_ENABLED(CONFIG_SUN3_SCSI)
166
167static const struct resource sun3_scsi_vme_rsrc[] __initconst = {
168 {
169 .flags = IORESOURCE_IRQ,
170 .start = SUN3_VEC_VMESCSI0,
171 .end = SUN3_VEC_VMESCSI0,
172 }, {
173 .flags = IORESOURCE_MEM,
174 .start = 0xff200000,
175 .end = 0xff200021,
176 }, {
177 .flags = IORESOURCE_IRQ,
178 .start = SUN3_VEC_VMESCSI1,
179 .end = SUN3_VEC_VMESCSI1,
180 }, {
181 .flags = IORESOURCE_MEM,
182 .start = 0xff204000,
183 .end = 0xff204021,
184 },
185};
186
187/*
188 * Int: level 2 autovector
189 * IO: type 1, base 0x00140000, 5 bits phys space: A<4..0>
190 */
191static const struct resource sun3_scsi_rsrc[] __initconst = {
192 {
193 .flags = IORESOURCE_IRQ,
194 .start = 2,
195 .end = 2,
196 }, {
197 .flags = IORESOURCE_MEM,
198 .start = 0x00140000,
199 .end = 0x0014001f,
200 },
201};
202
203int __init sun3_platform_init(void)
204{
205 switch (idprom->id_machtype) {
206 case SM_SUN3 | SM_3_160:
207 case SM_SUN3 | SM_3_260:
208 platform_device_register_simple("sun3_scsi_vme", -1,
209 sun3_scsi_vme_rsrc, ARRAY_SIZE(sun3_scsi_vme_rsrc));
210 break;
211 case SM_SUN3 | SM_3_50:
212 case SM_SUN3 | SM_3_60:
213 platform_device_register_simple("sun3_scsi", -1,
214 sun3_scsi_rsrc, ARRAY_SIZE(sun3_scsi_rsrc));
215 break;
216 }
217 return 0;
218}
219
220arch_initcall(sun3_platform_init);
221
222#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/bootmem.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
40extern u32 sun3_gettimeoffset(void);
41static void sun3_sched_init(irq_handler_t handler);
42extern void sun3_get_model (char* model);
43extern int sun3_hwclk(int set, struct rtc_time *t);
44
45volatile char* clock_va;
46extern unsigned long availmem;
47unsigned long num_pages;
48
49static void sun3_get_hardware_list(struct seq_file *m)
50{
51 seq_printf(m, "PROM Revision:\t%s\n", romvec->pv_monid);
52}
53
54void __init sun3_init(void)
55{
56 unsigned char enable_register;
57 int i;
58
59 m68k_machtype= MACH_SUN3;
60 m68k_cputype = CPU_68020;
61 m68k_fputype = FPU_68881; /* mc68881 actually */
62 m68k_mmutype = MMU_SUN3;
63 clock_va = (char *) 0xfe06000; /* dark */
64 sun3_intreg = (unsigned char *) 0xfe0a000; /* magic */
65 sun3_disable_interrupts();
66
67 prom_init((void *)LINUX_OPPROM_BEGVM);
68
69 GET_CONTROL_BYTE(AC_SENABLE,enable_register);
70 enable_register |= 0x50; /* Enable FPU */
71 SET_CONTROL_BYTE(AC_SENABLE,enable_register);
72 GET_CONTROL_BYTE(AC_SENABLE,enable_register);
73
74 /* This code looks suspicious, because it doesn't subtract
75 memory belonging to the kernel from the available space */
76
77
78 memset(sun3_reserved_pmeg, 0, sizeof(sun3_reserved_pmeg));
79
80 /* Reserve important PMEGS */
81 /* FIXME: These should be probed instead of hardcoded */
82
83 for (i=0; i<8; i++) /* Kernel PMEGs */
84 sun3_reserved_pmeg[i] = 1;
85
86 sun3_reserved_pmeg[247] = 1; /* ROM mapping */
87 sun3_reserved_pmeg[248] = 1; /* AMD Ethernet */
88 sun3_reserved_pmeg[251] = 1; /* VB area */
89 sun3_reserved_pmeg[254] = 1; /* main I/O */
90
91 sun3_reserved_pmeg[249] = 1;
92 sun3_reserved_pmeg[252] = 1;
93 sun3_reserved_pmeg[253] = 1;
94 set_fs(KERNEL_DS);
95}
96
97/* Without this, Bad Things happen when something calls arch_reset. */
98static void sun3_reboot (void)
99{
100 prom_reboot ("vmlinux");
101}
102
103static void sun3_halt (void)
104{
105 prom_halt ();
106}
107
108/* sun3 bootmem allocation */
109
110static void __init sun3_bootmem_alloc(unsigned long memory_start,
111 unsigned long memory_end)
112{
113 unsigned long start_page;
114
115 /* align start/end to page boundaries */
116 memory_start = ((memory_start + (PAGE_SIZE-1)) & PAGE_MASK);
117 memory_end = memory_end & PAGE_MASK;
118
119 start_page = __pa(memory_start) >> PAGE_SHIFT;
120 max_pfn = num_pages = __pa(memory_end) >> PAGE_SHIFT;
121
122 high_memory = (void *)memory_end;
123 availmem = memory_start;
124
125 m68k_setup_node(0);
126 availmem += init_bootmem(start_page, num_pages);
127 availmem = (availmem + (PAGE_SIZE-1)) & PAGE_MASK;
128
129 free_bootmem(__pa(availmem), memory_end - (availmem));
130}
131
132
133void __init config_sun3(void)
134{
135 unsigned long memory_start, memory_end;
136
137 pr_info("ARCH: SUN3\n");
138 idprom_init();
139
140 /* Subtract kernel memory from available memory */
141
142 mach_sched_init = sun3_sched_init;
143 mach_init_IRQ = sun3_init_IRQ;
144 mach_reset = sun3_reboot;
145 arch_gettimeoffset = sun3_gettimeoffset;
146 mach_get_model = sun3_get_model;
147 mach_hwclk = sun3_hwclk;
148 mach_halt = sun3_halt;
149 mach_get_hardware_list = sun3_get_hardware_list;
150
151 memory_start = ((((unsigned long)_end) + 0x2000) & ~0x1fff);
152// PROM seems to want the last couple of physical pages. --m
153 memory_end = *(romvec->pv_sun3mem) + PAGE_OFFSET - 2*PAGE_SIZE;
154
155 m68k_num_memory=1;
156 m68k_memory[0].size=*(romvec->pv_sun3mem);
157
158 sun3_bootmem_alloc(memory_start, memory_end);
159}
160
161static void __init sun3_sched_init(irq_handler_t timer_routine)
162{
163 sun3_disable_interrupts();
164 intersil_clock->cmd_reg=(INTERSIL_RUN|INTERSIL_INT_DISABLE|INTERSIL_24H_MODE);
165 intersil_clock->int_reg=INTERSIL_HZ_100_MASK;
166 intersil_clear();
167 sun3_enable_irq(5);
168 intersil_clock->cmd_reg=(INTERSIL_RUN|INTERSIL_INT_ENABLE|INTERSIL_24H_MODE);
169 sun3_enable_interrupts();
170 intersil_clear();
171}
172
173#if IS_ENABLED(CONFIG_SUN3_SCSI)
174
175static const struct resource sun3_scsi_vme_rsrc[] __initconst = {
176 {
177 .flags = IORESOURCE_IRQ,
178 .start = SUN3_VEC_VMESCSI0,
179 .end = SUN3_VEC_VMESCSI0,
180 }, {
181 .flags = IORESOURCE_MEM,
182 .start = 0xff200000,
183 .end = 0xff200021,
184 }, {
185 .flags = IORESOURCE_IRQ,
186 .start = SUN3_VEC_VMESCSI1,
187 .end = SUN3_VEC_VMESCSI1,
188 }, {
189 .flags = IORESOURCE_MEM,
190 .start = 0xff204000,
191 .end = 0xff204021,
192 },
193};
194
195/*
196 * Int: level 2 autovector
197 * IO: type 1, base 0x00140000, 5 bits phys space: A<4..0>
198 */
199static const struct resource sun3_scsi_rsrc[] __initconst = {
200 {
201 .flags = IORESOURCE_IRQ,
202 .start = 2,
203 .end = 2,
204 }, {
205 .flags = IORESOURCE_MEM,
206 .start = 0x00140000,
207 .end = 0x0014001f,
208 },
209};
210
211int __init sun3_platform_init(void)
212{
213 switch (idprom->id_machtype) {
214 case SM_SUN3 | SM_3_160:
215 case SM_SUN3 | SM_3_260:
216 platform_device_register_simple("sun3_scsi_vme", -1,
217 sun3_scsi_vme_rsrc, ARRAY_SIZE(sun3_scsi_vme_rsrc));
218 break;
219 case SM_SUN3 | SM_3_50:
220 case SM_SUN3 | SM_3_60:
221 platform_device_register_simple("sun3_scsi", -1,
222 sun3_scsi_rsrc, ARRAY_SIZE(sun3_scsi_rsrc));
223 break;
224 }
225 return 0;
226}
227
228arch_initcall(sun3_platform_init);
229
230#endif