[mirror_ubuntu-artful-kernel.git] / arch / m68k / sun3 / config.c

/*
 *  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;
	max_pfn = num_pages = __pa(memory_end) >> PAGE_SHIFT;

	high_memory = (void *)memory_end;
	availmem = memory_start;

	m68k_setup_node(0);
	availmem += init_bootmem(start_page, 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
Commit	Line	Data
1da177e4 LT	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
1da177e4 LT	11	#include <linux/types.h>
	12	#include <linux/kernel.h>
	13	#include <linux/mm.h>
813dcf7a	14	#include <linux/seq_file.h>
1da177e4 LT	15	#include <linux/tty.h>
	16	#include <linux/console.h>
	17	#include <linux/init.h>
	18	#include <linux/bootmem.h>
0d31f875	19	#include <linux/platform_device.h>
1da177e4 LT	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>
12d810c1	26	#include <asm/pgalloc.h>
1da177e4 LT	27	#include <asm/sun3-head.h>
	28	#include <asm/sun3mmu.h>
	29	#include <asm/rtc.h>
	30	#include <asm/machdep.h>
0d31f875	31	#include <asm/machines.h>
c85627fb	32	#include <asm/idprom.h>
1da177e4 LT	33	#include <asm/intersil.h>
1da177e4 LT	34	#include <asm/irq.h>
c85627fb	35	#include <asm/sections.h>
1da177e4 LT	36	#include <asm/segment.h>
	37	#include <asm/sun3ints.h>
	38
1da177e4 LT	39	char sun3_reserved_pmeg[SUN3_PMEGS_NUM];
1da177e4 LT	40
c8d5ba18	41	extern u32 sun3_gettimeoffset(void);
07b81259	42	static void sun3_sched_init(irq_handler_t handler);
1da177e4	43	extern void sun3_get_model (char* model);
1da177e4 LT	44	extern int sun3_hwclk(int set, struct rtc_time *t);
	45
	46	volatile char* clock_va;
1da177e4 LT	47	extern unsigned long availmem;
	48	unsigned long num_pages;
	49
813dcf7a	50	static void sun3_get_hardware_list(struct seq_file *m)
1da177e4	51	{
813dcf7a	52	seq_printf(m, "PROM Revision:\t%s\n", romvec->pv_monid);
1da177e4 LT	53	}
	54
	55	void __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. */
	99	static void sun3_reboot (void)
	100	{
	101	prom_reboot ("vmlinux");
	102	}
	103
	104	static void sun3_halt (void)
	105	{
	106	prom_halt ();
	107	}
	108
	109	/* sun3 bootmem allocation */
	110
07b81259 AB	111	static void __init sun3_bootmem_alloc(unsigned long memory_start,
07b81259 AB	112	unsigned long memory_end)
1da177e4 LT	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;
c73ec319	121	max_pfn = num_pages = __pa(memory_end) >> PAGE_SHIFT;
1da177e4 LT	122
	123	high_memory = (void *)memory_end;
	124	availmem = memory_start;
	125
12d810c1	126	m68k_setup_node(0);
c73ec319	127	availmem += init_bootmem(start_page, num_pages);
1da177e4 LT	128	availmem = (availmem + (PAGE_SIZE-1)) & PAGE_MASK;
	129
	130	free_bootmem(__pa(availmem), memory_end - (availmem));
	131	}
	132
	133
	134	void __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;
1da177e4	145	mach_reset = sun3_reboot;
c8d5ba18	146	arch_gettimeoffset = sun3_gettimeoffset;
1da177e4 LT	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;
1da177e4	151
c85627fb	152	memory_start = ((((unsigned long)_end) + 0x2000) & ~0x1fff);
1da177e4 LT	153	// PROM seems to want the last couple of physical pages. --m
	154	memory_end = (romvec->pv_sun3mem) + PAGE_OFFSET - 2PAGE_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
07b81259	162	static void __init sun3_sched_init(irq_handler_t timer_routine)
1da177e4 LT	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
0d31f875 FT	174	#ifdef CONFIG_SUN3_SCSI
	175
	176	static 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	*/
	200	static 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
	212	int __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
	229	arch_initcall(sun3_platform_init);
	230
	231	#endif