11da177e4SLinus Torvalds /* 21da177e4SLinus Torvalds * linux/arch/m68k/sun3/config.c 31da177e4SLinus Torvalds * 41da177e4SLinus Torvalds * Copyright (C) 1996,1997 Pekka Pietik{inen 51da177e4SLinus Torvalds * 61da177e4SLinus Torvalds * This file is subject to the terms and conditions of the GNU General Public 71da177e4SLinus Torvalds * License. See the file COPYING in the main directory of this archive 81da177e4SLinus Torvalds * for more details. 91da177e4SLinus Torvalds */ 101da177e4SLinus Torvalds 111da177e4SLinus Torvalds #include <linux/types.h> 121da177e4SLinus Torvalds #include <linux/kernel.h> 131da177e4SLinus Torvalds #include <linux/mm.h> 14813dcf7aSAlexey Dobriyan #include <linux/seq_file.h> 151da177e4SLinus Torvalds #include <linux/tty.h> 161da177e4SLinus Torvalds #include <linux/console.h> 171da177e4SLinus Torvalds #include <linux/init.h> 1857c8a661SMike Rapoport #include <linux/memblock.h> 190d31f875SFinn Thain #include <linux/platform_device.h> 201da177e4SLinus Torvalds 211da177e4SLinus Torvalds #include <asm/oplib.h> 221da177e4SLinus Torvalds #include <asm/setup.h> 231da177e4SLinus Torvalds #include <asm/contregs.h> 241da177e4SLinus Torvalds #include <asm/movs.h> 2512d810c1SRoman Zippel #include <asm/pgalloc.h> 261da177e4SLinus Torvalds #include <asm/sun3-head.h> 271da177e4SLinus Torvalds #include <asm/sun3mmu.h> 281da177e4SLinus Torvalds #include <asm/machdep.h> 290d31f875SFinn Thain #include <asm/machines.h> 30c85627fbSGeert Uytterhoeven #include <asm/idprom.h> 311da177e4SLinus Torvalds #include <asm/intersil.h> 321da177e4SLinus Torvalds #include <asm/irq.h> 33c85627fbSGeert Uytterhoeven #include <asm/sections.h> 341da177e4SLinus Torvalds #include <asm/segment.h> 351da177e4SLinus Torvalds #include <asm/sun3ints.h> 361da177e4SLinus Torvalds 371da177e4SLinus Torvalds char sun3_reserved_pmeg[SUN3_PMEGS_NUM]; 381da177e4SLinus Torvalds 39*f9a01539SArnd Bergmann static void sun3_sched_init(void); 401da177e4SLinus Torvalds extern void sun3_get_model (char* model); 411da177e4SLinus Torvalds extern int sun3_hwclk(int set, struct rtc_time *t); 421da177e4SLinus Torvalds 431da177e4SLinus Torvalds volatile char* clock_va; 441da177e4SLinus Torvalds extern unsigned long availmem; 451da177e4SLinus Torvalds unsigned long num_pages; 461da177e4SLinus Torvalds 47813dcf7aSAlexey Dobriyan static void sun3_get_hardware_list(struct seq_file *m) 481da177e4SLinus Torvalds { 49813dcf7aSAlexey Dobriyan seq_printf(m, "PROM Revision:\t%s\n", romvec->pv_monid); 501da177e4SLinus Torvalds } 511da177e4SLinus Torvalds 521da177e4SLinus Torvalds void __init sun3_init(void) 531da177e4SLinus Torvalds { 541da177e4SLinus Torvalds unsigned char enable_register; 551da177e4SLinus Torvalds int i; 561da177e4SLinus Torvalds 571da177e4SLinus Torvalds m68k_machtype= MACH_SUN3; 581da177e4SLinus Torvalds m68k_cputype = CPU_68020; 591da177e4SLinus Torvalds m68k_fputype = FPU_68881; /* mc68881 actually */ 601da177e4SLinus Torvalds m68k_mmutype = MMU_SUN3; 611da177e4SLinus Torvalds clock_va = (char *) 0xfe06000; /* dark */ 621da177e4SLinus Torvalds sun3_intreg = (unsigned char *) 0xfe0a000; /* magic */ 631da177e4SLinus Torvalds sun3_disable_interrupts(); 641da177e4SLinus Torvalds 651da177e4SLinus Torvalds prom_init((void *)LINUX_OPPROM_BEGVM); 661da177e4SLinus Torvalds 671da177e4SLinus Torvalds GET_CONTROL_BYTE(AC_SENABLE,enable_register); 681da177e4SLinus Torvalds enable_register |= 0x50; /* Enable FPU */ 691da177e4SLinus Torvalds SET_CONTROL_BYTE(AC_SENABLE,enable_register); 701da177e4SLinus Torvalds GET_CONTROL_BYTE(AC_SENABLE,enable_register); 711da177e4SLinus Torvalds 721da177e4SLinus Torvalds /* This code looks suspicious, because it doesn't subtract 731da177e4SLinus Torvalds memory belonging to the kernel from the available space */ 741da177e4SLinus Torvalds 751da177e4SLinus Torvalds 761da177e4SLinus Torvalds memset(sun3_reserved_pmeg, 0, sizeof(sun3_reserved_pmeg)); 771da177e4SLinus Torvalds 781da177e4SLinus Torvalds /* Reserve important PMEGS */ 791da177e4SLinus Torvalds /* FIXME: These should be probed instead of hardcoded */ 801da177e4SLinus Torvalds 811da177e4SLinus Torvalds for (i=0; i<8; i++) /* Kernel PMEGs */ 821da177e4SLinus Torvalds sun3_reserved_pmeg[i] = 1; 831da177e4SLinus Torvalds 841da177e4SLinus Torvalds sun3_reserved_pmeg[247] = 1; /* ROM mapping */ 851da177e4SLinus Torvalds sun3_reserved_pmeg[248] = 1; /* AMD Ethernet */ 861da177e4SLinus Torvalds sun3_reserved_pmeg[251] = 1; /* VB area */ 871da177e4SLinus Torvalds sun3_reserved_pmeg[254] = 1; /* main I/O */ 881da177e4SLinus Torvalds 891da177e4SLinus Torvalds sun3_reserved_pmeg[249] = 1; 901da177e4SLinus Torvalds sun3_reserved_pmeg[252] = 1; 911da177e4SLinus Torvalds sun3_reserved_pmeg[253] = 1; 921da177e4SLinus Torvalds set_fs(KERNEL_DS); 931da177e4SLinus Torvalds } 941da177e4SLinus Torvalds 951da177e4SLinus Torvalds /* Without this, Bad Things happen when something calls arch_reset. */ 961da177e4SLinus Torvalds static void sun3_reboot (void) 971da177e4SLinus Torvalds { 981da177e4SLinus Torvalds prom_reboot ("vmlinux"); 991da177e4SLinus Torvalds } 1001da177e4SLinus Torvalds 1011da177e4SLinus Torvalds static void sun3_halt (void) 1021da177e4SLinus Torvalds { 1031da177e4SLinus Torvalds prom_halt (); 1041da177e4SLinus Torvalds } 1051da177e4SLinus Torvalds 1061da177e4SLinus Torvalds /* sun3 bootmem allocation */ 1071da177e4SLinus Torvalds 10807b81259SAdrian Bunk static void __init sun3_bootmem_alloc(unsigned long memory_start, 10907b81259SAdrian Bunk unsigned long memory_end) 1101da177e4SLinus Torvalds { 1111da177e4SLinus Torvalds unsigned long start_page; 1121da177e4SLinus Torvalds 1131da177e4SLinus Torvalds /* align start/end to page boundaries */ 1141da177e4SLinus Torvalds memory_start = ((memory_start + (PAGE_SIZE-1)) & PAGE_MASK); 1151da177e4SLinus Torvalds memory_end = memory_end & PAGE_MASK; 1161da177e4SLinus Torvalds 1171da177e4SLinus Torvalds start_page = __pa(memory_start) >> PAGE_SHIFT; 118c73ec319SGeert Uytterhoeven max_pfn = num_pages = __pa(memory_end) >> PAGE_SHIFT; 1191da177e4SLinus Torvalds 1201da177e4SLinus Torvalds high_memory = (void *)memory_end; 1211da177e4SLinus Torvalds availmem = memory_start; 1221da177e4SLinus Torvalds 12312d810c1SRoman Zippel m68k_setup_node(0); 1241da177e4SLinus Torvalds } 1251da177e4SLinus Torvalds 1261da177e4SLinus Torvalds 1271da177e4SLinus Torvalds void __init config_sun3(void) 1281da177e4SLinus Torvalds { 1291da177e4SLinus Torvalds unsigned long memory_start, memory_end; 1301da177e4SLinus Torvalds 13156bbd862SGeert Uytterhoeven pr_info("ARCH: SUN3\n"); 1321da177e4SLinus Torvalds idprom_init(); 1331da177e4SLinus Torvalds 1341da177e4SLinus Torvalds /* Subtract kernel memory from available memory */ 1351da177e4SLinus Torvalds 1361da177e4SLinus Torvalds mach_sched_init = sun3_sched_init; 1371da177e4SLinus Torvalds mach_init_IRQ = sun3_init_IRQ; 1381da177e4SLinus Torvalds mach_reset = sun3_reboot; 1391da177e4SLinus Torvalds mach_get_model = sun3_get_model; 1401da177e4SLinus Torvalds mach_hwclk = sun3_hwclk; 1411da177e4SLinus Torvalds mach_halt = sun3_halt; 1421da177e4SLinus Torvalds mach_get_hardware_list = sun3_get_hardware_list; 1431da177e4SLinus Torvalds 144c85627fbSGeert Uytterhoeven memory_start = ((((unsigned long)_end) + 0x2000) & ~0x1fff); 1451da177e4SLinus Torvalds // PROM seems to want the last couple of physical pages. --m 1461da177e4SLinus Torvalds memory_end = *(romvec->pv_sun3mem) + PAGE_OFFSET - 2*PAGE_SIZE; 1471da177e4SLinus Torvalds 1481da177e4SLinus Torvalds m68k_num_memory=1; 1491da177e4SLinus Torvalds m68k_memory[0].size=*(romvec->pv_sun3mem); 1501da177e4SLinus Torvalds 1511da177e4SLinus Torvalds sun3_bootmem_alloc(memory_start, memory_end); 1521da177e4SLinus Torvalds } 1531da177e4SLinus Torvalds 154*f9a01539SArnd Bergmann static void __init sun3_sched_init(void) 1551da177e4SLinus Torvalds { 1561da177e4SLinus Torvalds sun3_disable_interrupts(); 1571da177e4SLinus Torvalds intersil_clock->cmd_reg=(INTERSIL_RUN|INTERSIL_INT_DISABLE|INTERSIL_24H_MODE); 1581da177e4SLinus Torvalds intersil_clock->int_reg=INTERSIL_HZ_100_MASK; 1591da177e4SLinus Torvalds intersil_clear(); 1601da177e4SLinus Torvalds sun3_enable_irq(5); 1611da177e4SLinus Torvalds intersil_clock->cmd_reg=(INTERSIL_RUN|INTERSIL_INT_ENABLE|INTERSIL_24H_MODE); 1621da177e4SLinus Torvalds sun3_enable_interrupts(); 1631da177e4SLinus Torvalds intersil_clear(); 1641da177e4SLinus Torvalds } 1651da177e4SLinus Torvalds 1662d522618SFinn Thain #if IS_ENABLED(CONFIG_SUN3_SCSI) 1670d31f875SFinn Thain 1680d31f875SFinn Thain static const struct resource sun3_scsi_vme_rsrc[] __initconst = { 1690d31f875SFinn Thain { 1700d31f875SFinn Thain .flags = IORESOURCE_IRQ, 1710d31f875SFinn Thain .start = SUN3_VEC_VMESCSI0, 1720d31f875SFinn Thain .end = SUN3_VEC_VMESCSI0, 1730d31f875SFinn Thain }, { 1740d31f875SFinn Thain .flags = IORESOURCE_MEM, 1750d31f875SFinn Thain .start = 0xff200000, 1760d31f875SFinn Thain .end = 0xff200021, 1770d31f875SFinn Thain }, { 1780d31f875SFinn Thain .flags = IORESOURCE_IRQ, 1790d31f875SFinn Thain .start = SUN3_VEC_VMESCSI1, 1800d31f875SFinn Thain .end = SUN3_VEC_VMESCSI1, 1810d31f875SFinn Thain }, { 1820d31f875SFinn Thain .flags = IORESOURCE_MEM, 1830d31f875SFinn Thain .start = 0xff204000, 1840d31f875SFinn Thain .end = 0xff204021, 1850d31f875SFinn Thain }, 1860d31f875SFinn Thain }; 1870d31f875SFinn Thain 1880d31f875SFinn Thain /* 1890d31f875SFinn Thain * Int: level 2 autovector 1900d31f875SFinn Thain * IO: type 1, base 0x00140000, 5 bits phys space: A<4..0> 1910d31f875SFinn Thain */ 1920d31f875SFinn Thain static const struct resource sun3_scsi_rsrc[] __initconst = { 1930d31f875SFinn Thain { 1940d31f875SFinn Thain .flags = IORESOURCE_IRQ, 1950d31f875SFinn Thain .start = 2, 1960d31f875SFinn Thain .end = 2, 1970d31f875SFinn Thain }, { 1980d31f875SFinn Thain .flags = IORESOURCE_MEM, 1990d31f875SFinn Thain .start = 0x00140000, 2000d31f875SFinn Thain .end = 0x0014001f, 2010d31f875SFinn Thain }, 2020d31f875SFinn Thain }; 2030d31f875SFinn Thain 2040d31f875SFinn Thain int __init sun3_platform_init(void) 2050d31f875SFinn Thain { 2060d31f875SFinn Thain switch (idprom->id_machtype) { 2070d31f875SFinn Thain case SM_SUN3 | SM_3_160: 2080d31f875SFinn Thain case SM_SUN3 | SM_3_260: 2090d31f875SFinn Thain platform_device_register_simple("sun3_scsi_vme", -1, 2100d31f875SFinn Thain sun3_scsi_vme_rsrc, ARRAY_SIZE(sun3_scsi_vme_rsrc)); 2110d31f875SFinn Thain break; 2120d31f875SFinn Thain case SM_SUN3 | SM_3_50: 2130d31f875SFinn Thain case SM_SUN3 | SM_3_60: 2140d31f875SFinn Thain platform_device_register_simple("sun3_scsi", -1, 2150d31f875SFinn Thain sun3_scsi_rsrc, ARRAY_SIZE(sun3_scsi_rsrc)); 2160d31f875SFinn Thain break; 2170d31f875SFinn Thain } 2180d31f875SFinn Thain return 0; 2190d31f875SFinn Thain } 2200d31f875SFinn Thain 2210d31f875SFinn Thain arch_initcall(sun3_platform_init); 2220d31f875SFinn Thain 2230d31f875SFinn Thain #endif 224