/* * vivi/lib/param.c: Simple vivi parameter management * * Copyright (C) 2001 MIZI Research, Inc. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that 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 * *  * Author: Janghoon Lyu <nandy@mizi.com> * Date  : $Date: 2002/10/12 08:48:51 $ * * $Revision: 1.4 $ * $Id: param.c,v 1.4 2002/10/12 08:48:51 nandy Exp $ * * * History *  * 2002-12-23: Janghoon Lyu <nandy@mizi.com> *    - Initial code * * 2002-02-23: Janghoon Lyu <nandy@mizi.com> *    - Add commands * * 2002-06-27: Janghoon Lyu <nandy@mizi.com> *    - 空芒 絆魔 * */#include "config.h"#include "machine.h"#include "priv_data.h"#include "printk.h"#include "command.h"#include "vivi_string.h"#include <types.h>#include <string.h>const char vivi_param_magic[8] = {'V', 'I', 'V', 'I', 'P', 'A', 'R', 'A'};const char linux_cmd_magic[8] = {'V', 'I', 'V', 'I', 'C', 'M', 'D', 'L'};	          /*vivi_parameter_t defined at include/priv_data.htypedef struct parameter {	char name[MAX_PARAM_NAME];	param_value_t value;	void (*update_func)(param_value_t value);} vivi_parameter_t;	*/vivi_parameter_t *vivi_params = \	(vivi_parameter_t *)(VIVI_PRIV_RAM_BASE + PARAMETER_TLB_OFFSET + 16);int *nb_params = (int *)(VIVI_PRIV_RAM_BASE + PARAMETER_TLB_OFFSET + 8);char *linux_cmd_line = (char *)(VIVI_PRIV_RAM_BASE + LINUX_CMD_OFFSET + 8);/* * General Interfaces *//* get parameter data by name */vivi_parameter_t *get_param(const char *name){	int i, namelen;	vivi_parameter_t *params = vivi_params; /*defined upside, also can see below for default values: *//*defined at arc/s3c2410/smdk.cvivi_parameter_t default_vivi_parameters[] = {	{ "mach_type",			MACH_TYPE,	NULL },	{ "media_type",			MT_S3C2410,	NULL },	//media_type was defined at include/boot_kernel.h, MT_S3C2410=3	{ "boot_mem_base",		0x30000000,	NULL },	{ "baudrate",			UART_BAUD_RATE,	NULL },	{ "xmodem_one_nak",		0,		NULL },	{ "xmodem_initial_timeout",	300000,		NULL },	{ "xmodem_timeout",		1000000,	NULL },	{ "ymodem_initial_timeout",	1500000,	NULL },	{ "boot_delay",			0x1000,		NULL }};*/	int num = *(nb_params);	namelen = strlen(name);	for(i = 0; i < num; i++) {		if (strncmp(name, params->name, namelen) == 0		    && name[namelen] == 0) {			return params;		}		params++;	}	return NULL;}/* get value of prameter */param_value_t get_param_value(const char *name, int *ret){	vivi_parameter_t *param = get_param(name);	if (param == NULL) { *ret = -1; return 0; }	*ret = 0;	return param->value;}/* set parameter value */int set_param_value(const char *name, param_value_t value){	vivi_parameter_t *param = get_param(name);	if (param == NULL) return -1;	param->value = value;	return 0;}/* display paramter table */void display_param_tlb(void){	vivi_parameter_t *params = vivi_params;	int i, num = *(nb_params);	printk("Number of parameters: %d\n", num);	printk("%-24s:\t   hex\t\t   integer\n", "name");	      /*mach_type               :  00000090               144*/	printk("-------------------------------------------------------------\n");	for (i = 0; i < num; i++) {		printk("%-24s:\t%08lx\t%13lu\n", 			params->name, params->value, (ulong)params->value);		params++;	}	printk("Linux command line: %s\n", linux_cmd_line);}/* * Manage linux command line */char *get_linux_cmd_line(void){	char *from = (char *)(VIVI_PRIV_RAM_BASE + LINUX_CMD_OFFSET);	if (strncmp(from, linux_cmd_magic, 8) != 0) {		printk("Wrong magic: could not get linux command line\n");		return NULL;	}	return from + 8;}int set_linux_cmd_line(const char *cmd){	memcpy(linux_cmd_line, cmd, (strlen(cmd) + 1));	return 0;}#ifdef CONFIG_CMD_PARAM/* * User Commands */static user_subcommand_t param_cmds[];/* * External command interface */void command_param(int argc, const char **argv){	if (argc == 1) {		printk("invalid 'params' command: too few arguments\n");		print_usage(NULL, param_cmds);		return;	} 	execsubcmd(param_cmds, argc-1, argv+1);}user_command_t param_cmd = {	"param",	command_param,	NULL,	"param [set|show|save|reset] \t-- set/get parameter"};/* * user commands ('param' command) */static void command_help(int argc, const char **argv){	print_usage("param", param_cmds);}/*  * Change a value of parameter * * vivi> param set <name> <value> * *     set (argv[0]): command of parameter *  <name> (argv[1]): name of parameter * <value> (argv[2]): value to set */static void command_set(int argc, const char **argv){	int ret;	char *name;	param_value_t pre_value, value;	if (argc != 3) {		printk("invalid 'param set' command: too few(many) arguments\n");		return;	}	/* parsing arguments */	name = (char *)argv[1];	/* if a user want to set the 'linux command line' */	if (strncmp(name, "linux_cmd_line", strlen(name)) == 0) {		ret = set_linux_cmd_line(argv[2]);		if (!ret) {			printk("Change linux command line to \"%s\"\n", 				linux_cmd_line);		} else {			printk("Failed changing linux command line\n");		}		return;	}	/* Change normag vivi parameters */	value = (param_value_t)strtoul(argv[2], NULL, 0, &ret);	if (ret) {		printk("Can not parsing arguments\n");	}	pre_value = get_param_value(name, &ret);	ret = set_param_value(name, value);	if (ret) {		printk("Error: can not change '%s' parameter value\n", name);	}	printk("Change '%s' value. 0x%08lx(%d) to 0x%08lx(%d)\n",		name, pre_value, pre_value, value, value);	return;}/* * set parameter table to default table * * vivi> param reset */static void command_reset_tlb(int argc, const char **argv){	if (get_default_param_tlb()) {		printk("There are no default parameter table\n");	}	if (get_default_linux_cmd()) {		printk("There are no default parameter table\n");	}}/* * display parameter table * * vivi> param show */static void command_show(int argc, const char **argv){	display_param_tlb();}/* * Save vivi private data * * vivi> param save */static void command_save(int argc, const char **argv){	if (argc != 1) {		invalid_cmd("param save", param_cmds);		return;	}	if (save_priv_data_blk())	  printk("Could not save vivi private data\n");	else printk("Saved vivi private data\n");}/* * set of 'param' user command */static user_subcommand_t param_cmds[] = {{	"help",	command_help,	"help \t\t\t-- Help aout 'param' command"}, {	"reset",	command_reset_tlb,	"reset \t\t\t-- Reset parameter table to default table"}, {	"save",	command_save,	"save \t\t\t-- Save parameter table to flash memeory"}, {	"set",	command_set,	"set <name> <value> \t-- Reset value of parameter\n"	"param set linux_cmd_line \"...\" \t-- set boot parameter"}, {	"show",	command_show,	"show \t\t\t-- Display parameter table"}, {	NULL,	NULL,	NULL}};#endif /* CONFIG_CMD_PARAM */