[deliverable/linux.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/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();
}

#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
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>
1da177e4 LT	28	#include <asm/sun3mmu.h>
1da177e4	29	#include <asm/machdep.h>
0d31f875	30	#include <asm/machines.h>
c85627fb	31	#include <asm/idprom.h>
1da177e4 LT	32	#include <asm/intersil.h>
1da177e4 LT	33	#include <asm/irq.h>
c85627fb	34	#include <asm/sections.h>
1da177e4 LT	35	#include <asm/segment.h>
	36	#include <asm/sun3ints.h>
	37
1da177e4 LT	38	char sun3_reserved_pmeg[SUN3_PMEGS_NUM];
1da177e4 LT	39
c8d5ba18	40	extern u32 sun3_gettimeoffset(void);
07b81259	41	static void sun3_sched_init(irq_handler_t handler);
1da177e4	42	extern void sun3_get_model (char* model);
1da177e4 LT	43	extern int sun3_hwclk(int set, struct rtc_time *t);
	44
	45	volatile char* clock_va;
1da177e4 LT	46	extern unsigned long availmem;
	47	unsigned long num_pages;
	48
813dcf7a	49	static void sun3_get_hardware_list(struct seq_file *m)
1da177e4	50	{
813dcf7a	51	seq_printf(m, "PROM Revision:\t%s\n", romvec->pv_monid);
1da177e4 LT	52	}
	53
	54	void __init sun3_init(void)
	55	{
	56	unsigned char enable_register;
	57	int i;
	58
	59	m68k_machtype= MACH_SUN3;
	60	m68k_cputype = CPU_68020;
	61	m68k_fputype = FPU_68881; /* mc68881 actually */
	62	m68k_mmutype = MMU_SUN3;
	63	clock_va = (char ) 0xfe06000; / dark */
	64	sun3_intreg = (unsigned char ) 0xfe0a000; / magic */
	65	sun3_disable_interrupts();
	66
	67	prom_init((void *)LINUX_OPPROM_BEGVM);
	68
	69	GET_CONTROL_BYTE(AC_SENABLE,enable_register);
	70	enable_register \|= 0x50; /* Enable FPU */
	71	SET_CONTROL_BYTE(AC_SENABLE,enable_register);
	72	GET_CONTROL_BYTE(AC_SENABLE,enable_register);
	73
	74	/* This code looks suspicious, because it doesn't subtract
	75	memory belonging to the kernel from the available space */
	76
	77
	78	memset(sun3_reserved_pmeg, 0, sizeof(sun3_reserved_pmeg));
	79
	80	/* Reserve important PMEGS */
	81	/* FIXME: These should be probed instead of hardcoded */
	82
	83	for (i=0; i<8; i++) /* Kernel PMEGs */
	84	sun3_reserved_pmeg[i] = 1;
	85
	86	sun3_reserved_pmeg[247] = 1; /* ROM mapping */
	87	sun3_reserved_pmeg[248] = 1; /* AMD Ethernet */
	88	sun3_reserved_pmeg[251] = 1; /* VB area */
	89	sun3_reserved_pmeg[254] = 1; /* main I/O */
	90
	91	sun3_reserved_pmeg[249] = 1;
	92	sun3_reserved_pmeg[252] = 1;
	93	sun3_reserved_pmeg[253] = 1;
	94	set_fs(KERNEL_DS);
	95	}
	96
	97	/* Without this, Bad Things happen when something calls arch_reset. */
	98	static void sun3_reboot (void)
	99	{
	100	prom_reboot ("vmlinux");
	101	}
	102
	103	static void sun3_halt (void)
	104	{
	105	prom_halt ();
	106	}
	107
	108	/* sun3 bootmem allocation */
	109
07b81259 AB	110	static void __init sun3_bootmem_alloc(unsigned long memory_start,
07b81259 AB	111	unsigned long memory_end)
1da177e4 LT	112	{
	113	unsigned long start_page;
	114
	115	/* align start/end to page boundaries */
	116	memory_start = ((memory_start + (PAGE_SIZE-1)) & PAGE_MASK);
	117	memory_end = memory_end & PAGE_MASK;
	118
	119	start_page = __pa(memory_start) >> PAGE_SHIFT;
c73ec319	120	max_pfn = num_pages = __pa(memory_end) >> PAGE_SHIFT;
1da177e4 LT	121
	122	high_memory = (void *)memory_end;
	123	availmem = memory_start;
	124
12d810c1	125	m68k_setup_node(0);
c73ec319	126	availmem += init_bootmem(start_page, num_pages);
1da177e4 LT	127	availmem = (availmem + (PAGE_SIZE-1)) & PAGE_MASK;
	128
	129	free_bootmem(__pa(availmem), memory_end - (availmem));
	130	}
	131
	132
	133	void __init config_sun3(void)
	134	{
	135	unsigned long memory_start, memory_end;
	136
	137	printk("ARCH: SUN3\n");
	138	idprom_init();
	139
	140	/* Subtract kernel memory from available memory */
	141
	142	mach_sched_init = sun3_sched_init;
	143	mach_init_IRQ = sun3_init_IRQ;
1da177e4	144	mach_reset = sun3_reboot;
c8d5ba18	145	arch_gettimeoffset = sun3_gettimeoffset;
1da177e4 LT	146	mach_get_model = sun3_get_model;
	147	mach_hwclk = sun3_hwclk;
	148	mach_halt = sun3_halt;
	149	mach_get_hardware_list = sun3_get_hardware_list;
1da177e4	150
c85627fb	151	memory_start = ((((unsigned long)_end) + 0x2000) & ~0x1fff);
1da177e4 LT	152	// PROM seems to want the last couple of physical pages. --m
	153	memory_end = (romvec->pv_sun3mem) + PAGE_OFFSET - 2PAGE_SIZE;
	154
	155	m68k_num_memory=1;
	156	m68k_memory[0].size=*(romvec->pv_sun3mem);
	157
	158	sun3_bootmem_alloc(memory_start, memory_end);
	159	}
	160
07b81259	161	static void __init sun3_sched_init(irq_handler_t timer_routine)
1da177e4 LT	162	{
	163	sun3_disable_interrupts();
	164	intersil_clock->cmd_reg=(INTERSIL_RUN\|INTERSIL_INT_DISABLE\|INTERSIL_24H_MODE);
	165	intersil_clock->int_reg=INTERSIL_HZ_100_MASK;
	166	intersil_clear();
	167	sun3_enable_irq(5);
	168	intersil_clock->cmd_reg=(INTERSIL_RUN\|INTERSIL_INT_ENABLE\|INTERSIL_24H_MODE);
	169	sun3_enable_interrupts();
	170	intersil_clear();
	171	}
	172
2d522618	173	#if IS_ENABLED(CONFIG_SUN3_SCSI)
0d31f875 FT	174
	175	static const struct resource sun3_scsi_vme_rsrc[] __initconst = {
	176	{
	177	.flags = IORESOURCE_IRQ,
	178	.start = SUN3_VEC_VMESCSI0,
	179	.end = SUN3_VEC_VMESCSI0,
	180	}, {
	181	.flags = IORESOURCE_MEM,
	182	.start = 0xff200000,
	183	.end = 0xff200021,
	184	}, {
	185	.flags = IORESOURCE_IRQ,
	186	.start = SUN3_VEC_VMESCSI1,
	187	.end = SUN3_VEC_VMESCSI1,
	188	}, {
	189	.flags = IORESOURCE_MEM,
	190	.start = 0xff204000,
	191	.end = 0xff204021,
	192	},
	193	};
	194
	195	/*
	196	* Int: level 2 autovector
	197	* IO: type 1, base 0x00140000, 5 bits phys space: A<4..0>
	198	*/
	199	static const struct resource sun3_scsi_rsrc[] __initconst = {
	200	{
	201	.flags = IORESOURCE_IRQ,
	202	.start = 2,
	203	.end = 2,
	204	}, {
	205	.flags = IORESOURCE_MEM,
	206	.start = 0x00140000,
	207	.end = 0x0014001f,
	208	},
	209	};
	210
	211	int __init sun3_platform_init(void)
	212	{
	213	switch (idprom->id_machtype) {
	214	case SM_SUN3 \| SM_3_160:
	215	case SM_SUN3 \| SM_3_260:
	216	platform_device_register_simple("sun3_scsi_vme", -1,
	217	sun3_scsi_vme_rsrc, ARRAY_SIZE(sun3_scsi_vme_rsrc));
	218	break;
	219	case SM_SUN3 \| SM_3_50:
	220	case SM_SUN3 \| SM_3_60:
	221	platform_device_register_simple("sun3_scsi", -1,
	222	sun3_scsi_rsrc, ARRAY_SIZE(sun3_scsi_rsrc));
	223	break;
	224	}
	225	return 0;
	226	}
	227
	228	arch_initcall(sun3_platform_init);
	229
	230	#endif