/* * 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 * 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 * - Initial code * * 2002-02-23: Janghoon Lyu * - Add commands * * 2002-06-27: Janghoon Lyu * - 空芒 绊魔 * */ #include "config.h" #include "machine.h" #include "priv_data.h" #include "printk.h" #include "command.h" #include "vivi_string.h" #include #include #include 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 *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; 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\t-- set/get parameter" }; __initcmd(param_cmd); /* * 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 * * set (argv[0]): command of parameter * (argv[1]): name of parameter * (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 \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 */
