diff options
| -rw-r--r-- | boot/bootdev-uclass.c | 31 | ||||
| -rw-r--r-- | cmd/bootdev.c | 35 | ||||
| -rw-r--r-- | include/bootdev.h | 58 | ||||
| -rw-r--r-- | include/bootstd.h | 3 | ||||
| -rw-r--r-- | test/boot/bootdev.c | 52 |
5 files changed, 176 insertions, 3 deletions
diff --git a/boot/bootdev-uclass.c b/boot/bootdev-uclass.c index 0ef3daf24c..62eb0b617c 100644 --- a/boot/bootdev-uclass.c +++ b/boot/bootdev-uclass.c @@ -636,6 +636,37 @@ int bootdev_setup_iter_order(struct bootflow_iter *iter, struct udevice **devp) return 0; } +void bootdev_list_hunters(struct bootstd_priv *std) +{ + struct bootdev_hunter *orig, *start; + int n_ent, i; + + orig = ll_entry_start(struct bootdev_hunter, bootdev_hunter); + n_ent = ll_entry_count(struct bootdev_hunter, bootdev_hunter); + + /* + * workaround for strange bug in clang-12 which sees all the below data + * as zeroes. Any access of start seems to fix it, such as + * + * printf("%p", start); + * + * Use memcpy() to force the correct behaviour. + */ + memcpy(&start, &orig, sizeof(orig)); + printf("%4s %4s %-15s %s\n", "Prio", "Used", "Uclass", "Hunter"); + printf("%4s %4s %-15s %s\n", "----", "----", "---------------", "---------------"); + for (i = 0; i < n_ent; i++) { + struct bootdev_hunter *info = start + i; + + printf("%4d %4s %-15s %s\n", info->prio, + std->hunters_used & BIT(i) ? "*" : "", + uclass_get_name(info->uclass), + info->drv ? info->drv->name : "(none)"); + } + + printf("(total hunters: %d)\n", n_ent); +} + static int bootdev_post_bind(struct udevice *dev) { struct bootdev_uc_plat *ucp = dev_get_uclass_plat(dev); diff --git a/cmd/bootdev.c b/cmd/bootdev.c index ecd797c050..80bfe2812e 100644 --- a/cmd/bootdev.c +++ b/cmd/bootdev.c @@ -107,14 +107,43 @@ static int do_bootdev_info(struct cmd_tbl *cmdtp, int flag, int argc, return 0; } +static int do_bootdev_hunt(struct cmd_tbl *cmdtp, int flag, int argc, + char *const argv[]) +{ + struct bootstd_priv *priv; + const char *spec = NULL; + bool list = false; + int ret = 0; + + if (argc >= 2) { + if (!strcmp(argv[1], "-l")) + list = true; + else + spec = argv[1]; + } + + ret = bootstd_get_priv(&priv); + if (ret) + return ret; + if (list) { + bootdev_list_hunters(priv); + } else { + /* TODO: implement hunting */ + } + + return 0; +} + #ifdef CONFIG_SYS_LONGHELP static char bootdev_help_text[] = - "list [-p] - list all available bootdevs (-p to probe)\n" - "bootdev select <bd> - select a bootdev by name | label | seq\n" - "bootdev info [-p] - show information about a bootdev (-p to probe)"; + "list [-p] - list all available bootdevs (-p to probe)\n" + "bootdev hunt [-l|<spec>] - use hunt drivers to find bootdevs\n" + "bootdev select <bd> - select a bootdev by name | label | seq\n" + "bootdev info [-p] - show information about a bootdev (-p to probe)"; #endif U_BOOT_CMD_WITH_SUBCMDS(bootdev, "Boot devices", bootdev_help_text, U_BOOT_SUBCMD_MKENT(list, 2, 1, do_bootdev_list), + U_BOOT_SUBCMD_MKENT(hunt, 2, 1, do_bootdev_hunt), U_BOOT_SUBCMD_MKENT(select, 2, 1, do_bootdev_select), U_BOOT_SUBCMD_MKENT(info, 2, 1, do_bootdev_info)); diff --git a/include/bootdev.h b/include/bootdev.h index 1e91d4130e..cafb5285a2 100644 --- a/include/bootdev.h +++ b/include/bootdev.h @@ -11,6 +11,7 @@ struct bootflow; struct bootflow_iter; +struct bootstd_priv; struct udevice; /** @@ -33,6 +34,53 @@ enum bootdev_prio_t { BOOTDEVP_COUNT, }; +struct bootdev_hunter; + +/** + * bootdev_hunter_func - function to probe for bootdevs of a given type + * + * This should hunt around for bootdevs of the given type, binding them as it + * finds them. This may involve bus enumeration, etc. + * + * @info: Info structure describing this hunter + * @show: true to show information from the hunter + * Returns: 0 if OK, -ve on error + */ +typedef int (*bootdev_hunter_func)(struct bootdev_hunter *info, bool show); + +/** + * struct bootdev_hunter - information about how to hunt for bootdevs + * + * @prio: Scanning priority of this hunter + * @uclass: Uclass ID for the media associated with this bootdev + * @drv: bootdev driver for the things found by this hunter + * @hunt: Function to call to hunt for bootdevs of this type (NULL if none) + * + * Some bootdevs are not visible until other devices are enumerated. For + * example, USB bootdevs only appear when the USB bus is enumerated. + * + * On the other hand, we don't always want to enumerate all the buses just to + * find the first valid bootdev. Ideally we want to work through them in + * priority order, so that the fastest bootdevs are discovered first. + * + * This struct holds information about the bootdev so we can determine the probe + * order and how to hunt for bootdevs of this type + */ +struct bootdev_hunter { + enum bootdev_prio_t prio; + enum uclass_id uclass; + struct driver *drv; + bootdev_hunter_func hunt; +}; + +/* declare a new bootdev hunter */ +#define BOOTDEV_HUNTER(__name) \ + ll_entry_declare(struct bootdev_hunter, __name, bootdev_hunter) + +/* access a bootdev hunter by name */ +#define BOOTDEV_HUNTER_GET(__name) \ + ll_entry_get(struct bootdev_hunter, __name, bootdev_hunter) + /** * struct bootdev_uc_plat - uclass information about a bootdev * @@ -205,6 +253,16 @@ int bootdev_find_by_any(const char *name, struct udevice **devp); */ int bootdev_setup_iter_order(struct bootflow_iter *iter, struct udevice **devp); +/** + * bootdev_list_hunters() - List the available bootdev hunters + * + * These provide a way to find new bootdevs by enumerating buses, etc. This + * function lists the available hunters + * + * @std: Pointer to bootstd private info + */ +void bootdev_list_hunters(struct bootstd_priv *std); + #if CONFIG_IS_ENABLED(BOOTSTD) /** * bootdev_setup_for_dev() - Bind a new bootdev device (deprecated) diff --git a/include/bootstd.h b/include/bootstd.h index bd305094fd..dddb3e1538 100644 --- a/include/bootstd.h +++ b/include/bootstd.h @@ -33,6 +33,8 @@ struct udevice; * @bootmeth_order: List of bootmeth devices to use, in order, NULL-terminated * @vbe_bootmeth: Currently selected VBE bootmeth, NULL if none * @theme: Node containing the theme information + * @hunters_used: Bitmask of used hunters, indexed by their position in the + * linker list. The bit is set if the hunter has been used already */ struct bootstd_priv { const char **prefixes; @@ -45,6 +47,7 @@ struct bootstd_priv { struct udevice **bootmeth_order; struct udevice *vbe_bootmeth; ofnode theme; + uint hunters_used; }; /** diff --git a/test/boot/bootdev.c b/test/boot/bootdev.c index 1c2a79fb10..a8ca12a3c8 100644 --- a/test/boot/bootdev.c +++ b/test/boot/bootdev.c @@ -221,3 +221,55 @@ static int bootdev_test_prio(struct unit_test_state *uts) return 0; } BOOTSTD_TEST(bootdev_test_prio, UT_TESTF_DM | UT_TESTF_SCAN_FDT); + +/* Check listing hunters */ +static int bootdev_test_hunter(struct unit_test_state *uts) +{ + struct bootstd_priv *std; + + /* get access to the used hunters */ + ut_assertok(bootstd_get_priv(&std)); + + console_record_reset_enable(); + bootdev_list_hunters(std); + ut_assert_nextline("Prio Used Uclass Hunter"); + ut_assert_nextlinen("----"); + ut_assert_nextline("(total hunters: 0)"); + ut_assert_console_end(); + + return 0; +} +BOOTSTD_TEST(bootdev_test_hunter, UT_TESTF_DM | UT_TESTF_SCAN_FDT); + +/* Check 'bootdev hunt' command */ +static int bootdev_test_cmd_hunt(struct unit_test_state *uts) +{ + struct bootstd_priv *std; + + /* get access to the used hunters */ + ut_assertok(bootstd_get_priv(&std)); + + console_record_reset_enable(); + ut_assertok(run_command("bootdev hunt -l", 0)); + ut_assert_nextline("Prio Used Uclass Hunter"); + ut_assert_nextlinen("----"); + ut_assert_nextline("(total hunters: 0)"); + ut_assert_console_end(); + + /* Scan all hunters */ + ut_assertok(run_command("bootdev hunt", 0)); + ut_assert_console_end(); + + /* List available hunters */ + ut_assertok(run_command("bootdev hunt -l", 0)); + ut_assert_nextlinen("Prio"); + ut_assert_nextlinen("----"); + ut_assert_nextline("(total hunters: 0)"); + ut_assert_console_end(); + + ut_asserteq(0, std->hunters_used); + + return 0; +} +BOOTSTD_TEST(bootdev_test_cmd_hunt, UT_TESTF_DM | UT_TESTF_SCAN_FDT | + UT_TESTF_ETH_BOOTDEV); |