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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 | // SPDX-License-Identifier: GPL-2.0+ /* * Copyright 2018, Google Inc. * Written by Simon Glass <sjg@chromium.org> */ #include <command.h> #include <dm.h> #include <spl.h> #include <asm/cpu.h> #include <asm/global_data.h> #include <asm/state.h> #include <dm/device-internal.h> #include <dm/lists.h> DECLARE_GLOBAL_DATA_PTR; static int do_sb_handoff(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) { #if CONFIG_IS_ENABLED(HANDOFF) if (gd->spl_handoff) printf("SPL handoff magic %lx\n", gd->spl_handoff->arch.magic); else printf("SPL handoff info not received\n"); return 0; #else printf("Command not supported\n"); return CMD_RET_USAGE; #endif } static int do_sb_map(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) { sandbox_map_list(); return 0; } static int do_sb_state(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) { struct sandbox_state *state; state = state_get_current(); state_show(state); return 0; } static int do_sb_devon(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) { struct udevice *dev; ofnode root, node; int ret; if (argc != 2) return CMD_RET_USAGE; /* Find the specified device tree node */ root = oftree_root(oftree_default()); node = ofnode_find_subnode(root, argv[1]); if (!ofnode_valid(node)) { printf("Device tree node '%s' not found\n", argv[1]); return CMD_RET_FAILURE; } /* Check if device is already bound */ ret = device_find_global_by_ofnode(node, &dev); if (!ret) { printf("Device '%s' is already enabled\n", argv[1]); return CMD_RET_FAILURE; } /* Bind the device from device tree */ ret = lists_bind_fdt(gd->dm_root, node, &dev, NULL, false); if (ret) { printf("Failed to bind device '%s' (err %dE)\n", argv[1], ret); return CMD_RET_FAILURE; } /* Probe the device */ ret = device_probe(dev); if (ret) { printf("Failed to probe device '%s' (err %dE)\n", argv[1], ret); return CMD_RET_FAILURE; } printf("Device '%s' enabled\n", dev->name); return CMD_RET_SUCCESS; } static int do_sb_devoff(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) { struct udevice *dev; ofnode root, node; int ret; if (argc != 2) return CMD_RET_USAGE; /* Find the specified device tree node */ root = oftree_root(oftree_default()); node = ofnode_find_subnode(root, argv[1]); if (!ofnode_valid(node)) { printf("Device tree node '%s' not found\n", argv[1]); return CMD_RET_FAILURE; } /* Find the device bound to this node */ ret = device_find_global_by_ofnode(node, &dev); if (ret) { printf("Device '%s' not found or not bound (err %dE)\n", argv[1], ret); return CMD_RET_FAILURE; } /* Remove the device (deactivate it) */ ret = device_remove(dev, DM_REMOVE_NORMAL); if (ret) { printf("Failed to remove device '%s' (err %dE)\n", argv[1], ret); return CMD_RET_FAILURE; } /* Unbind the device */ ret = device_unbind(dev); if (ret) { printf("Failed to unbind device '%s' (err %dE)\n", argv[1], ret); return CMD_RET_FAILURE; } printf("Device '%s' disabled\n", argv[1]); return CMD_RET_SUCCESS; } U_BOOT_LONGHELP(sb, "devoff <node> - Disable device from device tree node\n" "sb devon <node> - Enable device from device tree node\n" "sb handoff - Show handoff data received from SPL\n" "sb map - Show mapped memory\n" "sb state - Show sandbox state"); U_BOOT_CMD_WITH_SUBCMDS(sb, "Sandbox status commands", sb_help_text, U_BOOT_SUBCMD_MKENT(devoff, 2, 1, do_sb_devoff), U_BOOT_SUBCMD_MKENT(devon, 2, 1, do_sb_devon), U_BOOT_SUBCMD_MKENT(handoff, 1, 1, do_sb_handoff), U_BOOT_SUBCMD_MKENT(map, 1, 1, do_sb_map), U_BOOT_SUBCMD_MKENT(state, 1, 1, do_sb_state)); |