Release 4.14 arch/mips/lasat/lasat_board.c

Directory: arch/mips/lasat
/*
 * Thomas Horsten <thh@lasat.com>
 * Copyright (C) 2000 LASAT Networks A/S.
 *
 *  This program is free software; you can distribute it and/or modify it
 *  under the terms of the GNU General Public License (Version 2) as
 *  published by the Free Software Foundation.
 *
 *  This program is distributed in the hope it will be useful, but WITHOUT
 *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 *  for more details.
 *
 *  You should have received a copy of the GNU General Public License along
 *  with this program; if not, write to the Free Software Foundation, Inc.,
 *  59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
 *
 * Routines specific to the LASAT boards
 */
#include <linux/types.h>
#include <linux/crc32.h>
#include <asm/lasat/lasat.h>
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/ctype.h>
#include <linux/mutex.h>
#include <asm/addrspace.h>
#include "at93c.h"
/* New model description table */
#include "lasat_models.h"

static DEFINE_MUTEX(lasat_eeprom_mutex);


#define EEPROM_CRC(data, len) (~crc32(~0, data, len))


struct lasat_info lasat_board_info;



int EEPROMRead(unsigned int pos, unsigned char *data, int len)
{
	int i;

	for (i = 0; i < len; i++)
		*data++ = at93c_read(pos++);

	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
Brian Murphy 46 100.00% 1 100.00%
Total 46 100.00% 1 100.00%



int EEPROMWrite(unsigned int pos, unsigned char *data, int len)
{
	int i;

	for (i = 0; i < len; i++)
		at93c_write(pos++, *data++);

	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
Brian Murphy 46 100.00% 1 100.00%
Total 46 100.00% 1 100.00%



static void init_flash_sizes(void)
{
	unsigned long *lb = lasat_board_info.li_flashpart_base;
	unsigned long *ls = lasat_board_info.li_flashpart_size;
	int i;

	ls[LASAT_MTD_BOOTLOADER] = 0x40000;
	ls[LASAT_MTD_SERVICE] = 0xC0000;
	ls[LASAT_MTD_NORMAL] = 0x100000;

	if (!IS_LASAT_200()) {
		lasat_board_info.li_flash_base = 0x1e000000;

		lb[LASAT_MTD_BOOTLOADER] = 0x1e400000;

		if (lasat_board_info.li_flash_size > 0x200000) {
			ls[LASAT_MTD_CONFIG] = 0x100000;
			ls[LASAT_MTD_FS] = 0x500000;
		}
	} else {
		lasat_board_info.li_flash_base = 0x10000000;

		if (lasat_board_info.li_flash_size < 0x1000000) {
			lb[LASAT_MTD_BOOTLOADER] = 0x10000000;
			ls[LASAT_MTD_CONFIG] = 0x100000;
			if (lasat_board_info.li_flash_size >= 0x400000)
				ls[LASAT_MTD_FS] =
				     lasat_board_info.li_flash_size - 0x300000;
		}
	}

	for (i = 1; i < LASAT_MTD_LAST; i++)
		lb[i] = lb[i-1] + ls[i-1];
}

Contributors
Person Tokens Prop Commits CommitProp
Brian Murphy 176 98.32% 1 50.00%
Thomas Bogendoerfer 3 1.68% 1 50.00%
Total 179 100.00% 2 100.00%



int lasat_init_board_info(void)
{
	int c;
	unsigned long crc;
	unsigned long cfg0, cfg1;
	const struct product_info   *ppi;
	int i_n_base_models = N_BASE_MODELS;
	const char * const * i_txt_base_models = txt_base_models;
	int i_n_prids = N_PRIDS;

	memset(&lasat_board_info, 0, sizeof(lasat_board_info));

	/* First read the EEPROM info */
	EEPROMRead(0, (unsigned char *)&lasat_board_info.li_eeprom_info,
		   sizeof(struct lasat_eeprom_struct));

	/* Check the CRC */
	crc = EEPROM_CRC((unsigned char *)(&lasat_board_info.li_eeprom_info),
		    sizeof(struct lasat_eeprom_struct) - 4);

	if (crc != lasat_board_info.li_eeprom_info.crc32) {
		printk(KERN_WARNING "WARNING...\nWARNING...\nEEPROM CRC does "
		       "not match calculated, attempting to soldier on...\n");
	}

	if (lasat_board_info.li_eeprom_info.version != LASAT_EEPROM_VERSION) {
		printk(KERN_WARNING "WARNING...\nWARNING...\nEEPROM version "
		       "%d, wanted version %d, attempting to soldier on...\n",
		       (unsigned int)lasat_board_info.li_eeprom_info.version,
		       LASAT_EEPROM_VERSION);
	}

	cfg0 = lasat_board_info.li_eeprom_info.cfg[0];
	cfg1 = lasat_board_info.li_eeprom_info.cfg[1];

	if (LASAT_W0_DSCTYPE(cfg0) != 1) {
		printk(KERN_WARNING "WARNING...\nWARNING...\n"
		       "Invalid configuration read from EEPROM, attempting to "
		       "soldier on...");
	}
	/* We have a valid configuration */

	switch (LASAT_W0_SDRAMBANKSZ(cfg0)) {
	case 0:
		lasat_board_info.li_memsize = 0x0800000;
		break;
	case 1:
		lasat_board_info.li_memsize = 0x1000000;
		break;
	case 2:
		lasat_board_info.li_memsize = 0x2000000;
		break;
	case 3:
		lasat_board_info.li_memsize = 0x4000000;
		break;
	case 4:
		lasat_board_info.li_memsize = 0x8000000;
		break;
	default:
		lasat_board_info.li_memsize = 0;
	}

	switch (LASAT_W0_SDRAMBANKS(cfg0)) {
	case 0:
		break;
	case 1:
		lasat_board_info.li_memsize *= 2;
		break;
	default:
		break;
	}

	switch (LASAT_W0_BUSSPEED(cfg0)) {
	case 0x0:
		lasat_board_info.li_bus_hz = 60000000;
		break;
	case 0x1:
		lasat_board_info.li_bus_hz = 66000000;
		break;
	case 0x2:
		lasat_board_info.li_bus_hz = 66666667;
		break;
	case 0x3:
		lasat_board_info.li_bus_hz = 80000000;
		break;
	case 0x4:
		lasat_board_info.li_bus_hz = 83333333;
		break;
	case 0x5:
		lasat_board_info.li_bus_hz = 100000000;
		break;
	}

	switch (LASAT_W0_CPUCLK(cfg0)) {
	case 0x0:
		lasat_board_info.li_cpu_hz =
			lasat_board_info.li_bus_hz;
		break;
	case 0x1:
		lasat_board_info.li_cpu_hz =
			lasat_board_info.li_bus_hz +
			(lasat_board_info.li_bus_hz >> 1);
		break;
	case 0x2:
		lasat_board_info.li_cpu_hz =
			lasat_board_info.li_bus_hz +
			lasat_board_info.li_bus_hz;
		break;
	case 0x3:
		lasat_board_info.li_cpu_hz =
			lasat_board_info.li_bus_hz +
			lasat_board_info.li_bus_hz +
			(lasat_board_info.li_bus_hz >> 1);
		break;
	case 0x4:
		lasat_board_info.li_cpu_hz =
			lasat_board_info.li_bus_hz +
			lasat_board_info.li_bus_hz +
			lasat_board_info.li_bus_hz;
		break;
	}

	/* Flash size */
	switch (LASAT_W1_FLASHSIZE(cfg1)) {
	case 0:
		lasat_board_info.li_flash_size = 0x200000;
		break;
	case 1:
		lasat_board_info.li_flash_size = 0x400000;
		break;
	case 2:
		lasat_board_info.li_flash_size = 0x800000;
		break;
	case 3:
		lasat_board_info.li_flash_size = 0x1000000;
		break;
	case 4:
		lasat_board_info.li_flash_size = 0x2000000;
		break;
	}

	init_flash_sizes();

	lasat_board_info.li_bmid = LASAT_W0_BMID(cfg0);
	lasat_board_info.li_prid = lasat_board_info.li_eeprom_info.prid;
	if (lasat_board_info.li_prid == 0xffff || lasat_board_info.li_prid == 0)
		lasat_board_info.li_prid = lasat_board_info.li_bmid;

	/* Base model stuff */
	if (lasat_board_info.li_bmid > i_n_base_models)
		lasat_board_info.li_bmid = i_n_base_models;
	strcpy(lasat_board_info.li_bmstr,
	       i_txt_base_models[lasat_board_info.li_bmid]);

	/* Product ID dependent values */
	c = lasat_board_info.li_prid;
	if (c >= i_n_prids) {
		strcpy(lasat_board_info.li_namestr, "Unknown Model");
		strcpy(lasat_board_info.li_typestr, "Unknown Type");
	} else {
		ppi = &vendor_info_table[0].vi_product_info[c];
		strcpy(lasat_board_info.li_namestr, ppi->pi_name);
		if (ppi->pi_type)
			strcpy(lasat_board_info.li_typestr, ppi->pi_type);
		else
			sprintf(lasat_board_info.li_typestr, "%d", 10 * c);
	}

	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
Brian Murphy 686 100.00% 1 100.00%
Total 686 100.00% 1 100.00%



void lasat_write_eeprom_info(void)
{
	unsigned long crc;

	mutex_lock(&lasat_eeprom_mutex);

	/* Generate the CRC */
	crc = EEPROM_CRC((unsigned char *)(&lasat_board_info.li_eeprom_info),
		    sizeof(struct lasat_eeprom_struct) - 4);
	lasat_board_info.li_eeprom_info.crc32 = crc;

	/* Write the EEPROM info */
	EEPROMWrite(0, (unsigned char *)&lasat_board_info.li_eeprom_info,
		    sizeof(struct lasat_eeprom_struct));

	mutex_unlock(&lasat_eeprom_mutex);
}
Contributors
Person Tokens Prop Commits CommitProp
Brian Murphy 67 84.81% 1 50.00%
Thomas Horsten 12 15.19% 1 50.00%
Total 79 100.00% 2 100.00%

Overall Contributors
Person Tokens Prop Commits CommitProp
Brian Murphy 1063 97.79% 1 33.33%
Thomas Horsten 21 1.93% 1 33.33%
Thomas Bogendoerfer 3 0.28% 1 33.33%
Total 1087 100.00% 3 100.00%
Directory: arch/mips/lasat

Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
Created with cregit.
Person	Tokens	Prop	Commits	CommitProp
Brian Murphy	46	100.00%	1	100.00%
Total	46	100.00%	1	100.00%
cregit-Linux how code gets into the kernel

Release 4.14 arch/mips/lasat/lasat_board.c

Contributors

Contributors

Contributors

Contributors

Contributors

Overall Contributors
