--- /dev/null
+/*
+ * 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/rtc.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;
+ num_pages = __pa(memory_end) >> PAGE_SHIFT;
+
+ high_memory = (void *)memory_end;
+ availmem = memory_start;
+
+ m68k_setup_node(0);
+ availmem += init_bootmem_node(NODE_DATA(0), start_page, 0, num_pages);
+ availmem = (availmem + (PAGE_SIZE-1)) & PAGE_MASK;
+
+ free_bootmem(__pa(availmem), memory_end - (availmem));
+}
+
+
+void __init config_sun3(void)
+{
+ unsigned long memory_start, memory_end;
+
+ printk("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();
+}
+
+#ifdef 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
Code Review / kvmfornfv.git / blobdiff