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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/bootmem.h>
19
20#include <asm/oplib.h>
21#include <asm/setup.h>
22#include <asm/contregs.h>
23#include <asm/movs.h>
24#include <asm/pgtable.h>
25#include <asm/pgalloc.h>
26#include <asm/sun3-head.h>
27#include <asm/sun3mmu.h>
28#include <asm/rtc.h>
29#include <asm/machdep.h>
30#include <asm/idprom.h>
31#include <asm/intersil.h>
32#include <asm/irq.h>
33#include <asm/sections.h>
34#include <asm/segment.h>
35#include <asm/sun3ints.h>
36
37char sun3_reserved_pmeg[SUN3_PMEGS_NUM];
38
39extern unsigned long sun3_gettimeoffset(void);
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 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 availmem += init_bootmem_node(NODE_DATA(0), start_page, 0, num_pages);
126 availmem = (availmem + (PAGE_SIZE-1)) & PAGE_MASK;
127
128 free_bootmem(__pa(availmem), memory_end - (availmem));
129}
130
131
132void __init config_sun3(void)
133{
134 unsigned long memory_start, memory_end;
135
136 printk("ARCH: SUN3\n");
137 idprom_init();
138
139 /* Subtract kernel memory from available memory */
140
141 mach_sched_init = sun3_sched_init;
142 mach_init_IRQ = sun3_init_IRQ;
143 mach_reset = sun3_reboot;
144 mach_gettimeoffset = sun3_gettimeoffset;
145 mach_get_model = sun3_get_model;
146 mach_hwclk = sun3_hwclk;
147 mach_halt = sun3_halt;
148 mach_get_hardware_list = sun3_get_hardware_list;
149
150 memory_start = ((((unsigned long)_end) + 0x2000) & ~0x1fff);
151// PROM seems to want the last couple of physical pages. --m
152 memory_end = *(romvec->pv_sun3mem) + PAGE_OFFSET - 2*PAGE_SIZE;
153
154 m68k_num_memory=1;
155 m68k_memory[0].size=*(romvec->pv_sun3mem);
156
157 sun3_bootmem_alloc(memory_start, memory_end);
158}
159
160static void __init sun3_sched_init(irq_handler_t timer_routine)
161{
162 sun3_disable_interrupts();
163 intersil_clock->cmd_reg=(INTERSIL_RUN|INTERSIL_INT_DISABLE|INTERSIL_24H_MODE);
164 intersil_clock->int_reg=INTERSIL_HZ_100_MASK;
165 intersil_clear();
166 sun3_enable_irq(5);
167 intersil_clock->cmd_reg=(INTERSIL_RUN|INTERSIL_INT_ENABLE|INTERSIL_24H_MODE);
168 sun3_enable_interrupts();
169 intersil_clear();
170}
171
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/rtc.h>
30#include <asm/machdep.h>
31#include <asm/machines.h>
32#include <asm/idprom.h>
33#include <asm/intersil.h>
34#include <asm/irq.h>
35#include <asm/sections.h>
36#include <asm/segment.h>
37#include <asm/sun3ints.h>
38
39char sun3_reserved_pmeg[SUN3_PMEGS_NUM];
40
41extern u32 sun3_gettimeoffset(void);
42static void sun3_sched_init(irq_handler_t handler);
43extern void sun3_get_model (char* model);
44extern int sun3_hwclk(int set, struct rtc_time *t);
45
46volatile char* clock_va;
47extern unsigned long availmem;
48unsigned long num_pages;
49
50static void sun3_get_hardware_list(struct seq_file *m)
51{
52 seq_printf(m, "PROM Revision:\t%s\n", romvec->pv_monid);
53}
54
55void __init sun3_init(void)
56{
57 unsigned char enable_register;
58 int i;
59
60 m68k_machtype= MACH_SUN3;
61 m68k_cputype = CPU_68020;
62 m68k_fputype = FPU_68881; /* mc68881 actually */
63 m68k_mmutype = MMU_SUN3;
64 clock_va = (char *) 0xfe06000; /* dark */
65 sun3_intreg = (unsigned char *) 0xfe0a000; /* magic */
66 sun3_disable_interrupts();
67
68 prom_init((void *)LINUX_OPPROM_BEGVM);
69
70 GET_CONTROL_BYTE(AC_SENABLE,enable_register);
71 enable_register |= 0x50; /* Enable FPU */
72 SET_CONTROL_BYTE(AC_SENABLE,enable_register);
73 GET_CONTROL_BYTE(AC_SENABLE,enable_register);
74
75 /* This code looks suspicious, because it doesn't subtract
76 memory belonging to the kernel from the available space */
77
78
79 memset(sun3_reserved_pmeg, 0, sizeof(sun3_reserved_pmeg));
80
81 /* Reserve important PMEGS */
82 /* FIXME: These should be probed instead of hardcoded */
83
84 for (i=0; i<8; i++) /* Kernel PMEGs */
85 sun3_reserved_pmeg[i] = 1;
86
87 sun3_reserved_pmeg[247] = 1; /* ROM mapping */
88 sun3_reserved_pmeg[248] = 1; /* AMD Ethernet */
89 sun3_reserved_pmeg[251] = 1; /* VB area */
90 sun3_reserved_pmeg[254] = 1; /* main I/O */
91
92 sun3_reserved_pmeg[249] = 1;
93 sun3_reserved_pmeg[252] = 1;
94 sun3_reserved_pmeg[253] = 1;
95 set_fs(KERNEL_DS);
96}
97
98/* Without this, Bad Things happen when something calls arch_reset. */
99static void sun3_reboot (void)
100{
101 prom_reboot ("vmlinux");
102}
103
104static void sun3_halt (void)
105{
106 prom_halt ();
107}
108
109/* sun3 bootmem allocation */
110
111static void __init sun3_bootmem_alloc(unsigned long memory_start,
112 unsigned long memory_end)
113{
114 unsigned long start_page;
115
116 /* align start/end to page boundaries */
117 memory_start = ((memory_start + (PAGE_SIZE-1)) & PAGE_MASK);
118 memory_end = memory_end & PAGE_MASK;
119
120 start_page = __pa(memory_start) >> PAGE_SHIFT;
121 max_pfn = num_pages = __pa(memory_end) >> PAGE_SHIFT;
122
123 high_memory = (void *)memory_end;
124 availmem = memory_start;
125
126 m68k_setup_node(0);
127 availmem += init_bootmem(start_page, num_pages);
128 availmem = (availmem + (PAGE_SIZE-1)) & PAGE_MASK;
129
130 free_bootmem(__pa(availmem), memory_end - (availmem));
131}
132
133
134void __init config_sun3(void)
135{
136 unsigned long memory_start, memory_end;
137
138 printk("ARCH: SUN3\n");
139 idprom_init();
140
141 /* Subtract kernel memory from available memory */
142
143 mach_sched_init = sun3_sched_init;
144 mach_init_IRQ = sun3_init_IRQ;
145 mach_reset = sun3_reboot;
146 arch_gettimeoffset = sun3_gettimeoffset;
147 mach_get_model = sun3_get_model;
148 mach_hwclk = sun3_hwclk;
149 mach_halt = sun3_halt;
150 mach_get_hardware_list = sun3_get_hardware_list;
151
152 memory_start = ((((unsigned long)_end) + 0x2000) & ~0x1fff);
153// PROM seems to want the last couple of physical pages. --m
154 memory_end = *(romvec->pv_sun3mem) + PAGE_OFFSET - 2*PAGE_SIZE;
155
156 m68k_num_memory=1;
157 m68k_memory[0].size=*(romvec->pv_sun3mem);
158
159 sun3_bootmem_alloc(memory_start, memory_end);
160}
161
162static void __init sun3_sched_init(irq_handler_t timer_routine)
163{
164 sun3_disable_interrupts();
165 intersil_clock->cmd_reg=(INTERSIL_RUN|INTERSIL_INT_DISABLE|INTERSIL_24H_MODE);
166 intersil_clock->int_reg=INTERSIL_HZ_100_MASK;
167 intersil_clear();
168 sun3_enable_irq(5);
169 intersil_clock->cmd_reg=(INTERSIL_RUN|INTERSIL_INT_ENABLE|INTERSIL_24H_MODE);
170 sun3_enable_interrupts();
171 intersil_clear();
172}
173
174#if IS_ENABLED(CONFIG_SUN3_SCSI)
175
176static const struct resource sun3_scsi_vme_rsrc[] __initconst = {
177 {
178 .flags = IORESOURCE_IRQ,
179 .start = SUN3_VEC_VMESCSI0,
180 .end = SUN3_VEC_VMESCSI0,
181 }, {
182 .flags = IORESOURCE_MEM,
183 .start = 0xff200000,
184 .end = 0xff200021,
185 }, {
186 .flags = IORESOURCE_IRQ,
187 .start = SUN3_VEC_VMESCSI1,
188 .end = SUN3_VEC_VMESCSI1,
189 }, {
190 .flags = IORESOURCE_MEM,
191 .start = 0xff204000,
192 .end = 0xff204021,
193 },
194};
195
196/*
197 * Int: level 2 autovector
198 * IO: type 1, base 0x00140000, 5 bits phys space: A<4..0>
199 */
200static const struct resource sun3_scsi_rsrc[] __initconst = {
201 {
202 .flags = IORESOURCE_IRQ,
203 .start = 2,
204 .end = 2,
205 }, {
206 .flags = IORESOURCE_MEM,
207 .start = 0x00140000,
208 .end = 0x0014001f,
209 },
210};
211
212int __init sun3_platform_init(void)
213{
214 switch (idprom->id_machtype) {
215 case SM_SUN3 | SM_3_160:
216 case SM_SUN3 | SM_3_260:
217 platform_device_register_simple("sun3_scsi_vme", -1,
218 sun3_scsi_vme_rsrc, ARRAY_SIZE(sun3_scsi_vme_rsrc));
219 break;
220 case SM_SUN3 | SM_3_50:
221 case SM_SUN3 | SM_3_60:
222 platform_device_register_simple("sun3_scsi", -1,
223 sun3_scsi_rsrc, ARRAY_SIZE(sun3_scsi_rsrc));
224 break;
225 }
226 return 0;
227}
228
229arch_initcall(sun3_platform_init);
230
231#endif