diff options
Diffstat (limited to 'boot/expo_build_cb.c')
| -rw-r--r-- | boot/expo_build_cb.c | 245 |
1 files changed, 245 insertions, 0 deletions
diff --git a/boot/expo_build_cb.c b/boot/expo_build_cb.c new file mode 100644 index 00000000000..442ad760e79 --- /dev/null +++ b/boot/expo_build_cb.c @@ -0,0 +1,245 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Building an expo from an FDT description + * + * Copyright 2022 Google LLC + * Written by Simon Glass <sjg@chromium.org> + */ + +#define LOG_CATEGORY LOGC_EXPO + +#include <cedit.h> +#include <ctype.h> +#include <errno.h> +#include <expo.h> +#include <log.h> +#include <malloc.h> +#include <vsprintf.h> +#include <asm/cb_sysinfo.h> + +/** + * struct build_info - Information to use when building + */ +struct build_info { + const struct cb_cmos_option_table *tab; + struct cedit_priv *priv; +}; + +/** + * convert_to_title() - Convert text to 'title' format and allocate a string + * + * Converts "this_is_a_test" to "This is a test" so it looks better + * + * @text: Text to convert + * Return: Allocated string, or NULL if out of memory + */ +static char *convert_to_title(const char *text) +{ + int len = strlen(text); + char *buf, *s; + + buf = malloc(len + 1); + if (!buf) + return NULL; + + for (s = buf; *text; s++, text++) { + if (s == buf) + *s = toupper(*text); + else if (*text == '_') + *s = ' '; + else + *s = *text; + } + *s = '\0'; + + return buf; +} + +/** + * menu_build() - Build a menu and add it to a scene + * + * See doc/developer/expo.rst for a description of the format + * + * @info: Build information + * @entry: CMOS entry to build a menu for + * @scn: Scene to add the menu to + * @objp: Returns the object pointer + * Returns: 0 if OK, -ENOMEM if out of memory, -EINVAL if there is a format + * error, -ENOENT if there is a references to a non-existent string + */ +static int menu_build(struct build_info *info, + const struct cb_cmos_entries *entry, struct scene *scn, + struct scene_obj **objp) +{ + struct scene_obj_menu *menu; + const void *ptr, *end; + uint menu_id; + char *title; + int ret, i; + + ret = scene_menu(scn, entry->name, 0, &menu); + if (ret < 0) + return log_msg_ret("men", ret); + menu_id = ret; + + title = convert_to_title(entry->name); + if (!title) + return log_msg_ret("con", -ENOMEM); + + /* Set the title */ + ret = scene_txt_str(scn, "title", 0, 0, title, NULL); + if (ret < 0) + return log_msg_ret("tit", ret); + menu->title_id = ret; + + end = (void *)info->tab + info->tab->size; + for (ptr = (void *)info->tab + info->tab->header_length, i = 0; + ptr < end; i++) { + const struct cb_cmos_enums *enums = ptr; + struct scene_menitem *item; + uint label; + + ptr += enums->size; + if (enums->tag != CB_TAG_OPTION_ENUM || + enums->config_id != entry->config_id) + continue; + + ret = scene_txt_str(scn, enums->text, 0, 0, enums->text, NULL); + if (ret < 0) + return log_msg_ret("tit", ret); + label = ret; + + ret = scene_menuitem(scn, menu_id, simple_xtoa(i), 0, 0, label, + 0, 0, 0, &item); + if (ret < 0) + return log_msg_ret("mi", ret); + item->value = enums->value; + } + *objp = &menu->obj; + + return 0; +} + +/** + * scene_build() - Build a scene and all its objects + * + * See doc/developer/expo.rst for a description of the format + * + * @info: Build information + * @scn: Scene to add the object to + * Returns: 0 if OK, -ENOMEM if out of memory, -EINVAL if there is a format + * error, -ENOENT if there is a references to a non-existent string + */ +static int scene_build(struct build_info *info, struct expo *exp) +{ + struct scene_obj_menu *menu; + const void *ptr, *end; + struct scene_obj *obj; + struct scene *scn; + uint label, menu_id; + int ret; + + ret = scene_new(exp, "cmos", 0, &scn); + if (ret < 0) + return log_msg_ret("scn", ret); + + ret = scene_txt_str(scn, "title", 0, 0, "CMOS RAM settings", NULL); + if (ret < 0) + return log_msg_ret("add", ret); + scn->title_id = ret; + + ret = scene_txt_str(scn, "prompt", 0, 0, + "UP and DOWN to choose, ENTER to select", NULL); + if (ret < 0) + return log_msg_ret("add", ret); + + end = (void *)info->tab + info->tab->size; + for (ptr = (void *)info->tab + info->tab->header_length; ptr < end;) { + const struct cb_cmos_entries *entry; + const struct cb_record *rec = ptr; + + entry = ptr; + ptr += rec->size; + if (rec->tag != CB_TAG_OPTION) + continue; + switch (entry->config) { + case 'e': + ret = menu_build(info, entry, scn, &obj); + break; + default: + continue; + } + if (ret < 0) + return log_msg_ret("add", ret); + + obj->start_bit = entry->bit; + obj->bit_length = entry->length; + } + + ret = scene_menu(scn, "save", EXPOID_SAVE, &menu); + if (ret < 0) + return log_msg_ret("men", ret); + menu_id = ret; + + ret = scene_txt_str(scn, "save", 0, 0, "Save and exit", NULL); + if (ret < 0) + return log_msg_ret("sav", ret); + label = ret; + ret = scene_menuitem(scn, menu_id, "save", 0, 0, label, + 0, 0, 0, NULL); + if (ret < 0) + return log_msg_ret("mi", ret); + + ret = scene_menu(scn, "nosave", EXPOID_DISCARD, &menu); + if (ret < 0) + return log_msg_ret("men", ret); + menu_id = ret; + + ret = scene_txt_str(scn, "nosave", 0, 0, "Exit without saving", NULL); + if (ret < 0) + return log_msg_ret("nos", ret); + label = ret; + ret = scene_menuitem(scn, menu_id, "exit", 0, 0, label, + 0, 0, 0, NULL); + if (ret < 0) + return log_msg_ret("mi", ret); + + return 0; +} + +static int build_it(struct build_info *info, struct expo **expp) +{ + struct expo *exp; + int ret; + + ret = expo_new("coreboot", NULL, &exp); + if (ret) + return log_msg_ret("exp", ret); + expo_set_dynamic_start(exp, EXPOID_BASE_ID); + + ret = scene_build(info, exp); + if (ret < 0) + return log_msg_ret("scn", ret); + + *expp = exp; + + return 0; +} + +int cb_expo_build(struct expo **expp) +{ + struct build_info info; + struct expo *exp; + int ret; + + info.tab = lib_sysinfo.option_table; + if (!info.tab) + return log_msg_ret("tab", -ENOENT); + + ret = build_it(&info, &exp); + if (ret) + return log_msg_ret("bui", ret); + *expp = exp; + + return 0; +} |