cmd/cedit.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * 'cedit' command
   4  *
   5  * Copyright 2023 Google LLC
   6  * Written by Simon Glass <[email protected]>
   7  */
   8
   9 #include <common.h>
  10 #include <command.h>
  11 #include <expo.h>
  12 #include <fs.h>
  13 #include <dm/ofnode.h>
  14 #include <linux/sizes.h>
  15
  16 struct expo *cur_exp;
  17
  18 static int do_cedit_load(struct cmd_tbl *cmdtp, int flag, int argc,
  19                          char *const argv[])
  20 {
  21         const char *fname;
  22         struct expo *exp;
  23         oftree tree;
  24         ulong size;
  25         void *buf;
  26         int ret;
  27
  28         if (argc < 4)
  29                 return CMD_RET_USAGE;
  30         fname = argv[3];
  31
  32         ret = fs_load_alloc(argv[1], argv[2], argv[3], SZ_1M, 0, &buf, &size);
  33         if (ret) {
  34                 printf("File not found\n");
  35                 return CMD_RET_FAILURE;
  36         }
  37
  38         tree = oftree_from_fdt(buf);
  39         if (!oftree_valid(tree)) {
  40                 printf("Cannot create oftree\n");
  41                 return CMD_RET_FAILURE;
  42         }
  43
  44         ret = expo_build(oftree_root(tree), &exp);
  45         oftree_dispose(tree);
  46         if (ret) {
  47                 printf("Failed to build expo: %dE\n", ret);
  48                 return CMD_RET_FAILURE;
  49         }
  50
  51         cur_exp = exp;
  52
  53         return 0;
  54 }
  55
  56 static int do_cedit_run(struct cmd_tbl *cmdtp, int flag, int argc,
  57                         char *const argv[])
  58 {
  59         ofnode node;
  60         int ret;
  61
  62         if (!cur_exp) {
  63                 printf("No expo loaded\n");
  64                 return CMD_RET_FAILURE;
  65         }
  66
  67         node = ofnode_path("/cedit-theme");
  68         if (ofnode_valid(node)) {
  69                 ret = expo_apply_theme(cur_exp, node);
  70                 if (ret)
  71                         return CMD_RET_FAILURE;
  72         } else {
  73                 log_warning("No theme found\n");
  74         }
  75         ret = cedit_run(cur_exp);
  76         if (ret) {
  77                 log_err("Failed (err=%dE)\n", ret);
  78                 return CMD_RET_FAILURE;
  79         }
  80
  81         return 0;
  82 }
  83
  84 #ifdef CONFIG_SYS_LONGHELP
  85 static char cedit_help_text[] =
  86         "load <interface> <dev[:part]> <filename>   - load config editor\n"
  87         "cedit run                                        - run config editor";
  88 #endif /* CONFIG_SYS_LONGHELP */
  89
  90 U_BOOT_CMD_WITH_SUBCMDS(cedit, "Configuration editor", cedit_help_text,
  91         U_BOOT_SUBCMD_MKENT(load, 5, 1, do_cedit_load),
  92         U_BOOT_SUBCMD_MKENT(run, 1, 1, do_cedit_run),
  93 );