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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 | /* * linux/arch/m68k/sun3/config.c * * Copyright (C) 1996,1997 Pekka Pietik{inen * * This file is subject to the terms and conditions of the GNU General Public * License. See the file COPYING in the main directory of this archive * for more details. */ #include <linux/types.h> #include <linux/kernel.h> #include <linux/mm.h> #include <linux/seq_file.h> #include <linux/tty.h> #include <linux/console.h> #include <linux/init.h> #include <linux/bootmem.h> #include <linux/platform_device.h> #include <asm/oplib.h> #include <asm/setup.h> #include <asm/contregs.h> #include <asm/movs.h> #include <asm/pgtable.h> #include <asm/pgalloc.h> #include <asm/sun3-head.h> #include <asm/sun3mmu.h> #include <asm/machdep.h> #include <asm/machines.h> #include <asm/idprom.h> #include <asm/intersil.h> #include <asm/irq.h> #include <asm/sections.h> #include <asm/segment.h> #include <asm/sun3ints.h> char sun3_reserved_pmeg[SUN3_PMEGS_NUM]; extern u32 sun3_gettimeoffset(void); static void sun3_sched_init(irq_handler_t handler); extern void sun3_get_model (char* model); extern int sun3_hwclk(int set, struct rtc_time *t); volatile char* clock_va; extern unsigned long availmem; unsigned long num_pages; static void sun3_get_hardware_list(struct seq_file *m) { seq_printf(m, "PROM Revision:\t%s\n", romvec->pv_monid); } void __init sun3_init(void) { unsigned char enable_register; int i; m68k_machtype= MACH_SUN3; m68k_cputype = CPU_68020; m68k_fputype = FPU_68881; /* mc68881 actually */ m68k_mmutype = MMU_SUN3; clock_va = (char *) 0xfe06000; /* dark */ sun3_intreg = (unsigned char *) 0xfe0a000; /* magic */ sun3_disable_interrupts(); prom_init((void *)LINUX_OPPROM_BEGVM); GET_CONTROL_BYTE(AC_SENABLE,enable_register); enable_register |= 0x50; /* Enable FPU */ SET_CONTROL_BYTE(AC_SENABLE,enable_register); GET_CONTROL_BYTE(AC_SENABLE,enable_register); /* This code looks suspicious, because it doesn't subtract memory belonging to the kernel from the available space */ memset(sun3_reserved_pmeg, 0, sizeof(sun3_reserved_pmeg)); /* Reserve important PMEGS */ /* FIXME: These should be probed instead of hardcoded */ for (i=0; i<8; i++) /* Kernel PMEGs */ sun3_reserved_pmeg[i] = 1; sun3_reserved_pmeg[247] = 1; /* ROM mapping */ sun3_reserved_pmeg[248] = 1; /* AMD Ethernet */ sun3_reserved_pmeg[251] = 1; /* VB area */ sun3_reserved_pmeg[254] = 1; /* main I/O */ sun3_reserved_pmeg[249] = 1; sun3_reserved_pmeg[252] = 1; sun3_reserved_pmeg[253] = 1; set_fs(KERNEL_DS); } /* Without this, Bad Things happen when something calls arch_reset. */ static void sun3_reboot (void) { prom_reboot ("vmlinux"); } static void sun3_halt (void) { prom_halt (); } /* sun3 bootmem allocation */ static void __init sun3_bootmem_alloc(unsigned long memory_start, unsigned long memory_end) { unsigned long start_page; /* align start/end to page boundaries */ memory_start = ((memory_start + (PAGE_SIZE-1)) & PAGE_MASK); memory_end = memory_end & PAGE_MASK; start_page = __pa(memory_start) >> PAGE_SHIFT; max_pfn = num_pages = __pa(memory_end) >> PAGE_SHIFT; high_memory = (void *)memory_end; availmem = memory_start; m68k_setup_node(0); } void __init config_sun3(void) { unsigned long memory_start, memory_end; pr_info("ARCH: SUN3\n"); idprom_init(); /* Subtract kernel memory from available memory */ mach_sched_init = sun3_sched_init; mach_init_IRQ = sun3_init_IRQ; mach_reset = sun3_reboot; arch_gettimeoffset = sun3_gettimeoffset; mach_get_model = sun3_get_model; mach_hwclk = sun3_hwclk; mach_halt = sun3_halt; mach_get_hardware_list = sun3_get_hardware_list; memory_start = ((((unsigned long)_end) + 0x2000) & ~0x1fff); // PROM seems to want the last couple of physical pages. --m memory_end = *(romvec->pv_sun3mem) + PAGE_OFFSET - 2*PAGE_SIZE; m68k_num_memory=1; m68k_memory[0].size=*(romvec->pv_sun3mem); sun3_bootmem_alloc(memory_start, memory_end); } static void __init sun3_sched_init(irq_handler_t timer_routine) { sun3_disable_interrupts(); intersil_clock->cmd_reg=(INTERSIL_RUN|INTERSIL_INT_DISABLE|INTERSIL_24H_MODE); intersil_clock->int_reg=INTERSIL_HZ_100_MASK; intersil_clear(); sun3_enable_irq(5); intersil_clock->cmd_reg=(INTERSIL_RUN|INTERSIL_INT_ENABLE|INTERSIL_24H_MODE); sun3_enable_interrupts(); intersil_clear(); } #if IS_ENABLED(CONFIG_SUN3_SCSI) static const struct resource sun3_scsi_vme_rsrc[] __initconst = { { .flags = IORESOURCE_IRQ, .start = SUN3_VEC_VMESCSI0, .end = SUN3_VEC_VMESCSI0, }, { .flags = IORESOURCE_MEM, .start = 0xff200000, .end = 0xff200021, }, { .flags = IORESOURCE_IRQ, .start = SUN3_VEC_VMESCSI1, .end = SUN3_VEC_VMESCSI1, }, { .flags = IORESOURCE_MEM, .start = 0xff204000, .end = 0xff204021, }, }; /* * Int: level 2 autovector * IO: type 1, base 0x00140000, 5 bits phys space: A<4..0> */ static const struct resource sun3_scsi_rsrc[] __initconst = { { .flags = IORESOURCE_IRQ, .start = 2, .end = 2, }, { .flags = IORESOURCE_MEM, .start = 0x00140000, .end = 0x0014001f, }, }; int __init sun3_platform_init(void) { switch (idprom->id_machtype) { case SM_SUN3 | SM_3_160: case SM_SUN3 | SM_3_260: platform_device_register_simple("sun3_scsi_vme", -1, sun3_scsi_vme_rsrc, ARRAY_SIZE(sun3_scsi_vme_rsrc)); break; case SM_SUN3 | SM_3_50: case SM_SUN3 | SM_3_60: platform_device_register_simple("sun3_scsi", -1, sun3_scsi_rsrc, ARRAY_SIZE(sun3_scsi_rsrc)); break; } return 0; } arch_initcall(sun3_platform_init); #endif |