arch/sandbox/cpu/start.c

   1 /*
   2  * Copyright (c) 2011-2012 The Chromium OS Authors.
   3  * SPDX-License-Identifier:     GPL-2.0+
   4  */
   5
   6 #include <common.h>
   7 #include <os.h>
   8 #include <cli.h>
   9 #include <asm/getopt.h>
  10 #include <asm/io.h>
  11 #include <asm/sections.h>
  12 #include <asm/state.h>
  13
  14 DECLARE_GLOBAL_DATA_PTR;
  15
  16 int sandbox_early_getopt_check(void)
  17 {
  18         struct sandbox_state *state = state_get_current();
  19         struct sandbox_cmdline_option **sb_opt = __u_boot_sandbox_option_start;
  20         size_t num_options = __u_boot_sandbox_option_count();
  21         size_t i;
  22         int max_arg_len, max_noarg_len;
  23
  24         /* parse_err will be a string of the faulting option */
  25         if (!state->parse_err)
  26                 return 0;
  27
  28         if (strcmp(state->parse_err, "help")) {
  29                 printf("u-boot: error: failed while parsing option: %s\n"
  30                         "\ttry running with --help for more information.\n",
  31                         state->parse_err);
  32                 os_exit(1);
  33         }
  34
  35         printf(
  36                 "u-boot, a command line test interface to U-Boot\n\n"
  37                 "Usage: u-boot [options]\n"
  38                 "Options:\n");
  39
  40         max_arg_len = 0;
  41         for (i = 0; i < num_options; ++i)
  42                 max_arg_len = max(strlen(sb_opt[i]->flag), max_arg_len);
  43         max_noarg_len = max_arg_len + 7;
  44
  45         for (i = 0; i < num_options; ++i) {
  46                 struct sandbox_cmdline_option *opt = sb_opt[i];
  47
  48                 /* first output the short flag if it has one */
  49                 if (opt->flag_short >= 0x100)
  50                         printf("      ");
  51                 else
  52                         printf("  -%c, ", opt->flag_short);
  53
  54                 /* then the long flag */
  55                 if (opt->has_arg)
  56                         printf("--%-*s <arg> ", max_arg_len, opt->flag);
  57                 else
  58                         printf("--%-*s", max_noarg_len, opt->flag);
  59
  60                 /* finally the help text */
  61                 printf("  %s\n", opt->help);
  62         }
  63
  64         os_exit(0);
  65 }
  66
  67 static int sandbox_cmdline_cb_help(struct sandbox_state *state, const char *arg)
  68 {
  69         /* just flag to sandbox_early_getopt_check to show usage */
  70         return 1;
  71 }
  72 SANDBOX_CMDLINE_OPT_SHORT(help, 'h', 0, "Display help");
  73
  74 int sandbox_main_loop_init(void)
  75 {
  76         struct sandbox_state *state = state_get_current();
  77
  78         /* Execute command if required */
  79         if (state->cmd) {
  80                 cli_init();
  81
  82                 run_command_list(state->cmd, -1, 0);
  83                 if (!state->interactive)
  84                         os_exit(state->exit_type);
  85         }
  86
  87         return 0;
  88 }
  89
  90 static int sandbox_cmdline_cb_command(struct sandbox_state *state,
  91                                       const char *arg)
  92 {
  93         state->cmd = arg;
  94         return 0;
  95 }
  96 SANDBOX_CMDLINE_OPT_SHORT(command, 'c', 1, "Execute U-Boot command");
  97
  98 static int sandbox_cmdline_cb_fdt(struct sandbox_state *state, const char *arg)
  99 {
 100         state->fdt_fname = arg;
 101         return 0;
 102 }
 103 SANDBOX_CMDLINE_OPT_SHORT(fdt, 'd', 1, "Specify U-Boot's control FDT");
 104
 105 static int sandbox_cmdline_cb_interactive(struct sandbox_state *state,
 106                                           const char *arg)
 107 {
 108         state->interactive = true;
 109         return 0;
 110 }
 111
 112 SANDBOX_CMDLINE_OPT_SHORT(interactive, 'i', 0, "Enter interactive mode");
 113
 114 static int sandbox_cmdline_cb_jump(struct sandbox_state *state,
 115                                    const char *arg)
 116 {
 117         /* Remember to delete this U-Boot image later */
 118         state->jumped_fname = arg;
 119
 120         return 0;
 121 }
 122 SANDBOX_CMDLINE_OPT_SHORT(jump, 'j', 1, "Jumped from previous U-Boot");
 123
 124 static int sandbox_cmdline_cb_memory(struct sandbox_state *state,
 125                                      const char *arg)
 126 {
 127         int err;
 128
 129         /* For now assume we always want to write it */
 130         state->write_ram_buf = true;
 131         state->ram_buf_fname = arg;
 132
 133         if (os_read_ram_buf(arg)) {
 134                 printf("Failed to read RAM buffer\n");
 135                 return err;
 136         }
 137
 138         return 0;
 139 }
 140 SANDBOX_CMDLINE_OPT_SHORT(memory, 'm', 1,
 141                           "Read/write ram_buf memory contents from file");
 142
 143 static int sandbox_cmdline_cb_rm_memory(struct sandbox_state *state,
 144                                         const char *arg)
 145 {
 146         state->ram_buf_rm = true;
 147
 148         return 0;
 149 }
 150 SANDBOX_CMDLINE_OPT(rm_memory, 0, "Remove memory file after reading");
 151
 152 static int sandbox_cmdline_cb_state(struct sandbox_state *state,
 153                                     const char *arg)
 154 {
 155         state->state_fname = arg;
 156         return 0;
 157 }
 158 SANDBOX_CMDLINE_OPT_SHORT(state, 's', 1, "Specify the sandbox state FDT");
 159
 160 static int sandbox_cmdline_cb_read(struct sandbox_state *state,
 161                                    const char *arg)
 162 {
 163         state->read_state = true;
 164         return 0;
 165 }
 166 SANDBOX_CMDLINE_OPT_SHORT(read, 'r', 0, "Read the state FDT on startup");
 167
 168 static int sandbox_cmdline_cb_write(struct sandbox_state *state,
 169                                     const char *arg)
 170 {
 171         state->write_state = true;
 172         return 0;
 173 }
 174 SANDBOX_CMDLINE_OPT_SHORT(write, 'w', 0, "Write state FDT on exit");
 175
 176 static int sandbox_cmdline_cb_ignore_missing(struct sandbox_state *state,
 177                                              const char *arg)
 178 {
 179         state->ignore_missing_state_on_read = true;
 180         return 0;
 181 }
 182 SANDBOX_CMDLINE_OPT_SHORT(ignore_missing, 'n', 0,
 183                           "Ignore missing state on read");
 184
 185 static int sandbox_cmdline_cb_show_lcd(struct sandbox_state *state,
 186                                        const char *arg)
 187 {
 188         state->show_lcd = true;
 189         return 0;
 190 }
 191 SANDBOX_CMDLINE_OPT_SHORT(show_lcd, 'l', 0,
 192                           "Show the sandbox LCD display");
 193
 194 static const char *term_args[STATE_TERM_COUNT] = {
 195         "raw-with-sigs",
 196         "raw",
 197         "cooked",
 198 };
 199
 200 static int sandbox_cmdline_cb_terminal(struct sandbox_state *state,
 201                                        const char *arg)
 202 {
 203         int i;
 204
 205         for (i = 0; i < STATE_TERM_COUNT; i++) {
 206                 if (!strcmp(arg, term_args[i])) {
 207                         state->term_raw = i;
 208                         return 0;
 209                 }
 210         }
 211
 212         printf("Unknown terminal setting '%s' (", arg);
 213         for (i = 0; i < STATE_TERM_COUNT; i++)
 214                 printf("%s%s", i ? ", " : "", term_args[i]);
 215         puts(")\n");
 216
 217         return 1;
 218 }
 219 SANDBOX_CMDLINE_OPT_SHORT(terminal, 't', 1,
 220                           "Set terminal to raw/cooked mode");
 221
 222 int main(int argc, char *argv[])
 223 {
 224         struct sandbox_state *state;
 225         gd_t data;
 226         int ret;
 227
 228         ret = state_init();
 229         if (ret)
 230                 goto err;
 231
 232         state = state_get_current();
 233         if (os_parse_args(state, argc, argv))
 234                 return 1;
 235
 236         ret = sandbox_read_state(state, state->state_fname);
 237         if (ret)
 238                 goto err;
 239
 240         /* Remove old memory file if required */
 241         if (state->ram_buf_rm && state->ram_buf_fname)
 242                 os_unlink(state->ram_buf_fname);
 243
 244         memset(&data, '\0', sizeof(data));
 245         gd = &data;
 246 #ifdef CONFIG_SYS_MALLOC_F_LEN
 247         gd->malloc_base = CONFIG_MALLOC_F_ADDR;
 248 #endif
 249
 250         /* Do pre- and post-relocation init */
 251         board_init_f(0);
 252
 253         board_init_r(gd->new_gd, 0);
 254
 255         /* NOTREACHED - board_init_r() does not return */
 256         return 0;
 257
 258 err:
 259         printf("Error %d\n", ret);
 260         return 1;
 261 }