[linux-2.6-block.git] / arch / mips / lasat / prom.c

/*
 * PROM interface routines.
 */
#include <linux/types.h>
#include <linux/init.h>
#include <linux/string.h>
#include <linux/ctype.h>
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/bootmem.h>
#include <linux/ioport.h>
#include <asm/bootinfo.h>
#include <asm/lasat/lasat.h>
#include <asm/cpu.h>

#include "at93c.h"
#include <asm/lasat/eeprom.h>
#include "prom.h"

#define RESET_VECTOR	0xbfc00000
#define PROM_JUMP_TABLE_ENTRY(n) (*((u32 *)(RESET_VECTOR + 0x20) + n))
#define PROM_DISPLAY_ADDR	PROM_JUMP_TABLE_ENTRY(0)
#define PROM_PUTC_ADDR		PROM_JUMP_TABLE_ENTRY(1)
#define PROM_MONITOR_ADDR	PROM_JUMP_TABLE_ENTRY(2)

static void null_prom_display(const char *string, int pos, int clear)
{
}

static void null_prom_monitor(void)
{
}

static void null_prom_putc(char c)
{
}

/* these are functions provided by the bootloader */
static void (*__prom_putc)(char c) = null_prom_putc;

void prom_putchar(char c)
{
	__prom_putc(c);
}

void (*prom_display)(const char *string, int pos, int clear) =
		null_prom_display;
void (*prom_monitor)(void) = null_prom_monitor;

unsigned int lasat_ndelay_divider;

static void setup_prom_vectors(void)
{
	u32 version = *(u32 *)(RESET_VECTOR + 0x90);

	if (version >= 307) {
		prom_display = (void *)PROM_DISPLAY_ADDR;
		__prom_putc = (void *)PROM_PUTC_ADDR;
		prom_monitor = (void *)PROM_MONITOR_ADDR;
	}
	printk(KERN_DEBUG "prom vectors set up\n");
}

static struct at93c_defs at93c_defs[N_MACHTYPES] = {
	{
		.reg		= (void *)AT93C_REG_100,
		.rdata_reg	= (void *)AT93C_RDATA_REG_100,
		.rdata_shift	= AT93C_RDATA_SHIFT_100,
		.wdata_shift	= AT93C_WDATA_SHIFT_100,
		.cs		= AT93C_CS_M_100,
		.clk		= AT93C_CLK_M_100
	}, {
		.reg		= (void *)AT93C_REG_200,
		.rdata_reg	= (void *)AT93C_RDATA_REG_200,
		.rdata_shift	= AT93C_RDATA_SHIFT_200,
		.wdata_shift	= AT93C_WDATA_SHIFT_200,
		.cs		= AT93C_CS_M_200,
		.clk		= AT93C_CLK_M_200
	},
};

void __init prom_init(void)
{
	int argc = fw_arg0;
	char **argv = (char **) fw_arg1;

	setup_prom_vectors();

	if (IS_LASAT_200()) {
		printk(KERN_INFO "LASAT 200 board\n");
		lasat_ndelay_divider = LASAT_200_DIVIDER;
		at93c = &at93c_defs[1];
	} else {
		printk(KERN_INFO "LASAT 100 board\n");
		lasat_ndelay_divider = LASAT_100_DIVIDER;
		at93c = &at93c_defs[0];
	}

	lasat_init_board_info();		/* Read info from EEPROM */

	/* Get the command line */
	if (argc > 0) {
		strncpy(arcs_cmdline, argv[0], COMMAND_LINE_SIZE-1);
		arcs_cmdline[COMMAND_LINE_SIZE-1] = '\0';
	}

	/* Set the I/O base address */
	set_io_port_base(KSEG1);

	/* Set memory regions */
	ioport_resource.start = 0;
	ioport_resource.end = 0xffffffff;	/* Wrong, fixme.  */

	add_memory_region(0, lasat_board_info.li_memsize, BOOT_MEM_RAM);
}

void __init prom_free_prom_memory(void)
{
}

const char *get_system_type(void)
{
	return lasat_board_info.li_bmstr;
}
Commit	Line	Data
1f21d2bd BM	1	/*
	2	* PROM interface routines.
	3	*/
	4	#include <linux/types.h>
	5	#include <linux/init.h>
	6	#include <linux/string.h>
	7	#include <linux/ctype.h>
	8	#include <linux/kernel.h>
	9	#include <linux/mm.h>
	10	#include <linux/bootmem.h>
	11	#include <linux/ioport.h>
	12	#include <asm/bootinfo.h>
	13	#include <asm/lasat/lasat.h>
	14	#include <asm/cpu.h>
	15
	16	#include "at93c.h"
	17	#include <asm/lasat/eeprom.h>
	18	#include "prom.h"
	19
	20	#define RESET_VECTOR 0xbfc00000
	21	#define PROM_JUMP_TABLE_ENTRY(n) (((u32 )(RESET_VECTOR + 0x20) + n))
	22	#define PROM_DISPLAY_ADDR PROM_JUMP_TABLE_ENTRY(0)
	23	#define PROM_PUTC_ADDR PROM_JUMP_TABLE_ENTRY(1)
	24	#define PROM_MONITOR_ADDR PROM_JUMP_TABLE_ENTRY(2)
	25
	26	static void null_prom_display(const char *string, int pos, int clear)
	27	{
	28	}
	29
	30	static void null_prom_monitor(void)
	31	{
	32	}
	33
	34	static void null_prom_putc(char c)
	35	{
	36	}
	37
	38	/* these are functions provided by the bootloader */
	39	static void (*__prom_putc)(char c) = null_prom_putc;
	40
	41	void prom_putchar(char c)
	42	{
	43	__prom_putc(c);
	44	}
	45
	46	void (prom_display)(const char string, int pos, int clear) =
	47	null_prom_display;
	48	void (*prom_monitor)(void) = null_prom_monitor;
	49
	50	unsigned int lasat_ndelay_divider;
	51
	52	static void setup_prom_vectors(void)
	53	{
	54	u32 version = (u32 )(RESET_VECTOR + 0x90);
	55
	56	if (version >= 307) {
	57	prom_display = (void *)PROM_DISPLAY_ADDR;
	58	__prom_putc = (void *)PROM_PUTC_ADDR;
	59	prom_monitor = (void *)PROM_MONITOR_ADDR;
	60	}
	61	printk(KERN_DEBUG "prom vectors set up\n");
	62	}
	63
	64	static struct at93c_defs at93c_defs[N_MACHTYPES] = {
65	{
66	.reg = (void *)AT93C_REG_100,
67	.rdata_reg = (void *)AT93C_RDATA_REG_100,
68	.rdata_shift = AT93C_RDATA_SHIFT_100,
69	.wdata_shift = AT93C_WDATA_SHIFT_100,
70	.cs = AT93C_CS_M_100,
71	.clk = AT93C_CLK_M_100
72	}, {
73	.reg = (void *)AT93C_REG_200,
74	.rdata_reg = (void *)AT93C_RDATA_REG_200,
75	.rdata_shift = AT93C_RDATA_SHIFT_200,
76	.wdata_shift = AT93C_WDATA_SHIFT_200,
77	.cs = AT93C_CS_M_200,
78	.clk = AT93C_CLK_M_200
79	},
80	};
81
82	void __init prom_init(void)
83	{
84	int argc = fw_arg0;
85	char argv = (char ) fw_arg1;
86
87	setup_prom_vectors();
88
b27418aa	89	if (IS_LASAT_200()) {
1f21d2bd	90	printk(KERN_INFO "LASAT 200 board\n");
1f21d2bd	91	lasat_ndelay_divider = LASAT_200_DIVIDER;
b27418aa	92	at93c = &at93c_defs[1];
1f21d2bd BM	93	} else {
1f21d2bd BM	94	printk(KERN_INFO "LASAT 100 board\n");
1f21d2bd	95	lasat_ndelay_divider = LASAT_100_DIVIDER;
b27418aa	96	at93c = &at93c_defs[0];
1f21d2bd BM	97	}
1f21d2bd BM	98
1f21d2bd BM	99	lasat_init_board_info(); /* Read info from EEPROM */
1f21d2bd BM	100
1f21d2bd BM	101	/* Get the command line */
1f21d2bd BM	102	if (argc > 0) {
7580c9c3 DV	103	strncpy(arcs_cmdline, argv[0], COMMAND_LINE_SIZE-1);
7580c9c3 DV	104	arcs_cmdline[COMMAND_LINE_SIZE-1] = '\0';
1f21d2bd BM	105	}
	106
	107	/* Set the I/O base address */
	108	set_io_port_base(KSEG1);
	109
	110	/* Set memory regions */
	111	ioport_resource.start = 0;
	112	ioport_resource.end = 0xffffffff; /* Wrong, fixme. */
	113
	114	add_memory_region(0, lasat_board_info.li_memsize, BOOT_MEM_RAM);
	115	}
	116
	117	void __init prom_free_prom_memory(void)
	118	{
	119	}
	120
	121	const char *get_system_type(void)
	122	{
	123	return lasat_board_info.li_bmstr;
	124	}