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/sun3ints.h>
351da177e4SLinus Torvalds
361da177e4SLinus Torvalds char sun3_reserved_pmeg[SUN3_PMEGS_NUM];
371da177e4SLinus Torvalds
38f9a01539SArnd Bergmann static void sun3_sched_init(void);
391da177e4SLinus Torvalds extern void sun3_get_model (char* model);
401da177e4SLinus Torvalds extern int sun3_hwclk(int set, struct rtc_time *t);
411da177e4SLinus Torvalds
421da177e4SLinus Torvalds volatile char* clock_va;
431da177e4SLinus Torvalds extern unsigned long availmem;
441da177e4SLinus Torvalds unsigned long num_pages;
451da177e4SLinus Torvalds
sun3_get_hardware_list(struct seq_file * m)46813dcf7aSAlexey Dobriyan static void sun3_get_hardware_list(struct seq_file *m)
471da177e4SLinus Torvalds {
48813dcf7aSAlexey Dobriyan seq_printf(m, "PROM Revision:\t%s\n", romvec->pv_monid);
491da177e4SLinus Torvalds }
501da177e4SLinus Torvalds
sun3_init(void)511da177e4SLinus Torvalds void __init sun3_init(void)
521da177e4SLinus Torvalds {
531da177e4SLinus Torvalds unsigned char enable_register;
541da177e4SLinus Torvalds int i;
551da177e4SLinus Torvalds
561da177e4SLinus Torvalds m68k_machtype= MACH_SUN3;
571da177e4SLinus Torvalds m68k_cputype = CPU_68020;
581da177e4SLinus Torvalds m68k_fputype = FPU_68881; /* mc68881 actually */
591da177e4SLinus Torvalds m68k_mmutype = MMU_SUN3;
601da177e4SLinus Torvalds clock_va = (char *) 0xfe06000; /* dark */
611da177e4SLinus Torvalds sun3_intreg = (unsigned char *) 0xfe0a000; /* magic */
621da177e4SLinus Torvalds sun3_disable_interrupts();
631da177e4SLinus Torvalds
641da177e4SLinus Torvalds prom_init((void *)LINUX_OPPROM_BEGVM);
651da177e4SLinus Torvalds
661da177e4SLinus Torvalds GET_CONTROL_BYTE(AC_SENABLE,enable_register);
671da177e4SLinus Torvalds enable_register |= 0x50; /* Enable FPU */
681da177e4SLinus Torvalds SET_CONTROL_BYTE(AC_SENABLE,enable_register);
691da177e4SLinus Torvalds GET_CONTROL_BYTE(AC_SENABLE,enable_register);
701da177e4SLinus Torvalds
711da177e4SLinus Torvalds /* This code looks suspicious, because it doesn't subtract
721da177e4SLinus Torvalds memory belonging to the kernel from the available space */
731da177e4SLinus Torvalds
741da177e4SLinus Torvalds
751da177e4SLinus Torvalds memset(sun3_reserved_pmeg, 0, sizeof(sun3_reserved_pmeg));
761da177e4SLinus Torvalds
771da177e4SLinus Torvalds /* Reserve important PMEGS */
781da177e4SLinus Torvalds /* FIXME: These should be probed instead of hardcoded */
791da177e4SLinus Torvalds
801da177e4SLinus Torvalds for (i=0; i<8; i++) /* Kernel PMEGs */
811da177e4SLinus Torvalds sun3_reserved_pmeg[i] = 1;
821da177e4SLinus Torvalds
831da177e4SLinus Torvalds sun3_reserved_pmeg[247] = 1; /* ROM mapping */
841da177e4SLinus Torvalds sun3_reserved_pmeg[248] = 1; /* AMD Ethernet */
851da177e4SLinus Torvalds sun3_reserved_pmeg[251] = 1; /* VB area */
861da177e4SLinus Torvalds sun3_reserved_pmeg[254] = 1; /* main I/O */
871da177e4SLinus Torvalds
881da177e4SLinus Torvalds sun3_reserved_pmeg[249] = 1;
891da177e4SLinus Torvalds sun3_reserved_pmeg[252] = 1;
901da177e4SLinus Torvalds sun3_reserved_pmeg[253] = 1;
91*9fde0348SChristoph Hellwig set_fc(USER_DATA);
921da177e4SLinus Torvalds }
931da177e4SLinus Torvalds
941da177e4SLinus Torvalds /* Without this, Bad Things happen when something calls arch_reset. */
sun3_reboot(void)951da177e4SLinus Torvalds static void sun3_reboot (void)
961da177e4SLinus Torvalds {
971da177e4SLinus Torvalds prom_reboot ("vmlinux");
981da177e4SLinus Torvalds }
991da177e4SLinus Torvalds
sun3_halt(void)1001da177e4SLinus Torvalds static void sun3_halt (void)
1011da177e4SLinus Torvalds {
1021da177e4SLinus Torvalds prom_halt ();
1031da177e4SLinus Torvalds }
1041da177e4SLinus Torvalds
1051da177e4SLinus Torvalds /* sun3 bootmem allocation */
1061da177e4SLinus Torvalds
sun3_bootmem_alloc(unsigned long memory_start,unsigned long memory_end)10707b81259SAdrian Bunk static void __init sun3_bootmem_alloc(unsigned long memory_start,
10807b81259SAdrian Bunk unsigned long memory_end)
1091da177e4SLinus Torvalds {
1101da177e4SLinus Torvalds unsigned long start_page;
1111da177e4SLinus Torvalds
1121da177e4SLinus Torvalds /* align start/end to page boundaries */
1131da177e4SLinus Torvalds memory_start = ((memory_start + (PAGE_SIZE-1)) & PAGE_MASK);
1141da177e4SLinus Torvalds memory_end = memory_end & PAGE_MASK;
1151da177e4SLinus Torvalds
1161da177e4SLinus Torvalds start_page = __pa(memory_start) >> PAGE_SHIFT;
117c73ec319SGeert Uytterhoeven max_pfn = num_pages = __pa(memory_end) >> PAGE_SHIFT;
1181da177e4SLinus Torvalds
1191da177e4SLinus Torvalds high_memory = (void *)memory_end;
1201da177e4SLinus Torvalds availmem = memory_start;
1211da177e4SLinus Torvalds
12212d810c1SRoman Zippel m68k_setup_node(0);
1231da177e4SLinus Torvalds }
1241da177e4SLinus Torvalds
1251da177e4SLinus Torvalds
config_sun3(void)1261da177e4SLinus Torvalds void __init config_sun3(void)
1271da177e4SLinus Torvalds {
1281da177e4SLinus Torvalds unsigned long memory_start, memory_end;
1291da177e4SLinus Torvalds
13056bbd862SGeert Uytterhoeven pr_info("ARCH: SUN3\n");
1311da177e4SLinus Torvalds idprom_init();
1321da177e4SLinus Torvalds
1331da177e4SLinus Torvalds /* Subtract kernel memory from available memory */
1341da177e4SLinus Torvalds
1351da177e4SLinus Torvalds mach_sched_init = sun3_sched_init;
1361da177e4SLinus Torvalds mach_init_IRQ = sun3_init_IRQ;
1371da177e4SLinus Torvalds mach_reset = sun3_reboot;
1381da177e4SLinus Torvalds mach_get_model = sun3_get_model;
1391da177e4SLinus Torvalds mach_hwclk = sun3_hwclk;
1401da177e4SLinus Torvalds mach_halt = sun3_halt;
1411da177e4SLinus Torvalds mach_get_hardware_list = sun3_get_hardware_list;
1421da177e4SLinus Torvalds
143c85627fbSGeert Uytterhoeven memory_start = ((((unsigned long)_end) + 0x2000) & ~0x1fff);
1441da177e4SLinus Torvalds // PROM seems to want the last couple of physical pages. --m
1451da177e4SLinus Torvalds memory_end = *(romvec->pv_sun3mem) + PAGE_OFFSET - 2*PAGE_SIZE;
1461da177e4SLinus Torvalds
1471da177e4SLinus Torvalds m68k_num_memory=1;
1481da177e4SLinus Torvalds m68k_memory[0].size=*(romvec->pv_sun3mem);
1491da177e4SLinus Torvalds
1501da177e4SLinus Torvalds sun3_bootmem_alloc(memory_start, memory_end);
1511da177e4SLinus Torvalds }
1521da177e4SLinus Torvalds
sun3_sched_init(void)153f9a01539SArnd Bergmann static void __init sun3_sched_init(void)
1541da177e4SLinus Torvalds {
1551da177e4SLinus Torvalds sun3_disable_interrupts();
1561da177e4SLinus Torvalds intersil_clock->cmd_reg=(INTERSIL_RUN|INTERSIL_INT_DISABLE|INTERSIL_24H_MODE);
1571da177e4SLinus Torvalds intersil_clock->int_reg=INTERSIL_HZ_100_MASK;
1581da177e4SLinus Torvalds intersil_clear();
1591da177e4SLinus Torvalds sun3_enable_irq(5);
1601da177e4SLinus Torvalds intersil_clock->cmd_reg=(INTERSIL_RUN|INTERSIL_INT_ENABLE|INTERSIL_24H_MODE);
1611da177e4SLinus Torvalds sun3_enable_interrupts();
1621da177e4SLinus Torvalds intersil_clear();
1631da177e4SLinus Torvalds }
1641da177e4SLinus Torvalds
1652d522618SFinn Thain #if IS_ENABLED(CONFIG_SUN3_SCSI)
1660d31f875SFinn Thain
1670d31f875SFinn Thain static const struct resource sun3_scsi_vme_rsrc[] __initconst = {
1680d31f875SFinn Thain {
1690d31f875SFinn Thain .flags = IORESOURCE_IRQ,
1700d31f875SFinn Thain .start = SUN3_VEC_VMESCSI0,
1710d31f875SFinn Thain .end = SUN3_VEC_VMESCSI0,
1720d31f875SFinn Thain }, {
1730d31f875SFinn Thain .flags = IORESOURCE_MEM,
1740d31f875SFinn Thain .start = 0xff200000,
1750d31f875SFinn Thain .end = 0xff200021,
1760d31f875SFinn Thain }, {
1770d31f875SFinn Thain .flags = IORESOURCE_IRQ,
1780d31f875SFinn Thain .start = SUN3_VEC_VMESCSI1,
1790d31f875SFinn Thain .end = SUN3_VEC_VMESCSI1,
1800d31f875SFinn Thain }, {
1810d31f875SFinn Thain .flags = IORESOURCE_MEM,
1820d31f875SFinn Thain .start = 0xff204000,
1830d31f875SFinn Thain .end = 0xff204021,
1840d31f875SFinn Thain },
1850d31f875SFinn Thain };
1860d31f875SFinn Thain
1870d31f875SFinn Thain /*
1880d31f875SFinn Thain * Int: level 2 autovector
1890d31f875SFinn Thain * IO: type 1, base 0x00140000, 5 bits phys space: A<4..0>
1900d31f875SFinn Thain */
1910d31f875SFinn Thain static const struct resource sun3_scsi_rsrc[] __initconst = {
1920d31f875SFinn Thain {
1930d31f875SFinn Thain .flags = IORESOURCE_IRQ,
1940d31f875SFinn Thain .start = 2,
1950d31f875SFinn Thain .end = 2,
1960d31f875SFinn Thain }, {
1970d31f875SFinn Thain .flags = IORESOURCE_MEM,
1980d31f875SFinn Thain .start = 0x00140000,
1990d31f875SFinn Thain .end = 0x0014001f,
2000d31f875SFinn Thain },
2010d31f875SFinn Thain };
2020d31f875SFinn Thain
sun3_platform_init(void)2030d31f875SFinn Thain int __init sun3_platform_init(void)
2040d31f875SFinn Thain {
2050d31f875SFinn Thain switch (idprom->id_machtype) {
2060d31f875SFinn Thain case SM_SUN3 | SM_3_160:
2070d31f875SFinn Thain case SM_SUN3 | SM_3_260:
2080d31f875SFinn Thain platform_device_register_simple("sun3_scsi_vme", -1,
2090d31f875SFinn Thain sun3_scsi_vme_rsrc, ARRAY_SIZE(sun3_scsi_vme_rsrc));
2100d31f875SFinn Thain break;
2110d31f875SFinn Thain case SM_SUN3 | SM_3_50:
2120d31f875SFinn Thain case SM_SUN3 | SM_3_60:
2130d31f875SFinn Thain platform_device_register_simple("sun3_scsi", -1,
2140d31f875SFinn Thain sun3_scsi_rsrc, ARRAY_SIZE(sun3_scsi_rsrc));
2150d31f875SFinn Thain break;
2160d31f875SFinn Thain }
2170d31f875SFinn Thain return 0;
2180d31f875SFinn Thain }
2190d31f875SFinn Thain
2200d31f875SFinn Thain arch_initcall(sun3_platform_init);
2210d31f875SFinn Thain
2220d31f875SFinn Thain #endif
223