On Tue, Feb 02, 2016 at 03:45:02AM +0100, Alexander Graf wrote: > When an EFI application runs, it has access to a few descriptor and callback > tables to instruct the EFI compliant firmware to do things for it. The bulk > of those interfaces are "boot time services". They handle all object > management, > and memory allocation. > > This patch adds support for the boot time services and also exposes a system > table, which is the point of entry descriptor table for EFI payloads. > > Signed-off-by: Alexander Graf <ag...@suse.de> > Reviewed-by: Simon Glass <s...@chromium.org> > > --- > > v1 -> v2: > > - Fix typo s/does now/does not/ > - Add #ifdefs around header to allow inclusion when efi_loader is disabled > - Add stub efi_restore_gd() function when efi_loader is disabled > - Disable debug > - Mark runtime region as such > - Fix up memory map > - Allow efi_restore_gd to be called before first efi entry > - Add 32bit arm cache workaround > - Move memory map to separate patch > - Change BTS version to 2.5 > - Fix return values for a few callbacks to more EFI compliant ones > - Change vendor to "Das U-Boot" > - Add warning when truncating timer trigger > - Move to GPLv2+ > > v2 -> v3: > > - Use external efi_memory helpers > - Add EFIAPI to function prototypes > - Initialize event timer to -1ULL to prevent early firing > - Document header > - Move obj list to lib > - Remove implicit guid table > - Add guid compare function > - Fix return values > - Implement efi_wait_for_event > - Implement efi_install_configuration_table > --- > include/efi_loader.h | 84 +++++ > lib/efi_loader/efi_boottime.c | 781 > ++++++++++++++++++++++++++++++++++++++++++ > 2 files changed, 865 insertions(+) > create mode 100644 lib/efi_loader/efi_boottime.c > > diff --git a/include/efi_loader.h b/include/efi_loader.h > index 5618185..a7f033e 100644 > --- a/include/efi_loader.h > +++ b/include/efi_loader.h > @@ -6,15 +6,99 @@ > * SPDX-License-Identifier: GPL-2.0+ > */ > > +#include <common.h> > #include <part_efi.h> > #include <efi_api.h> > + > +#ifdef CONFIG_EFI_LOADER > + > #include <linux/list.h> > > +/* #define DEBUG_EFI */ > + > +#ifdef DEBUG_EFI > +#define EFI_ENTRY(format, ...) do { \ > + efi_restore_gd(); \ > + printf("EFI: Entry %s(" format ")\n", __func__, ##__VA_ARGS__); \ > + } while(0) > +#else > +#define EFI_ENTRY(format, ...) do { \ > + efi_restore_gd(); \ > + } while(0) > +#endif > + > +#define EFI_EXIT(ret) efi_exit_func(ret); > + > +extern struct efi_system_table systab; > + > extern const efi_guid_t efi_guid_device_path; > extern const efi_guid_t efi_guid_loaded_image; > > +/* > + * While UEFI objects can have callbacks, you can also call functions on > + * protocols (classes) themselves. This struct maps a protocol GUID to its > + * interface (usually a struct with callback functions). > + */ > +struct efi_class_map { > + const efi_guid_t *guid; > + const void *interface; > +}; > + > +/* > + * When the UEFI payload wants to open a protocol on an object to get its > + * interface (usually a struct with callback functions), this struct maps the > + * protocol GUID to the respective protocol handler open function for that > + * object protocol combination. > + */ > +struct efi_handler { > + const efi_guid_t *guid; > + efi_status_t (EFIAPI *open)(void *handle, > + efi_guid_t *protocol, void **protocol_interface, > + void *agent_handle, void *controller_handle, > + uint32_t attributes); > +}; > + > +/* > + * UEFI has a poor man's OO model where one "object" can be polimorphic and > have
Polymorphic. Also, somewhat long lines in this comment block? > + * multiple different protocols (classes) attached to it. > + * > + * This struct is the parent struct for all of our actual implementation > objects > + * that can include it to make themselves an EFI object > + */ > +struct efi_object { > + /* Every UEFI object is part of a global object list */ > + struct list_head link; > + /* We support up to 4 "protocols" an object can be accessed through */ > + struct efi_handler protocols[4]; > + /* The object spawner can either use this for data or as identifier */ > + void *handle; > +}; > + > +/* This list contains all UEFI objects we know of */ > +extern struct list_head efi_obj_list; > + > +/* > + * Stub implementation for a protocol opener that just returns the handle as > + * interface > + */ > efi_status_t efi_return_handle(void *handle, > efi_guid_t *protocol, void **protocol_interface, > void *agent_handle, void *controller_handle, > uint32_t attributes); > +/* Called from places to check whether a timer expired */ > +void efi_timer_check(void); > +/* PE loader implementation */ > void *efi_load_pe(void *efi, struct efi_loaded_image *loaded_image_info); > +/* Called once to store the pristine gd pointer */ > +void efi_save_gd(void); > +/* Called from EFI_ENTRY on callback entry to put gd into the gd register */ > +void efi_restore_gd(void); > +/* Called from EFI_EXIT on callback exit to restore the gd register */ > +efi_status_t efi_exit_func(efi_status_t ret); > + > +#else /* defined(EFI_LOADER) */ > + > +/* No loader configured, stub out EFI_ENTRY */ > +static inline void efi_restore_gd(void) { } > + > +#endif > diff --git a/lib/efi_loader/efi_boottime.c b/lib/efi_loader/efi_boottime.c > new file mode 100644 > index 0000000..e60fae9 > --- /dev/null > +++ b/lib/efi_loader/efi_boottime.c > @@ -0,0 +1,781 @@ > +/* > + * EFI application boot time services > + * > + * Copyright (c) 2016 Alexander Graf > + * > + * SPDX-License-Identifier: GPL-2.0+ > + */ > + > +/* #define DEBUG_EFI */ > + > +#include <common.h> > +#include <efi_loader.h> > +#include <malloc.h> > +#include <asm/global_data.h> > +#include <libfdt_env.h> > +#include <u-boot/crc.h> > +#include <bootm.h> > +#include <inttypes.h> > +#include <watchdog.h> > + > +DECLARE_GLOBAL_DATA_PTR; > + > +/* This list contains all the EFI objects our payload has access to */ > +LIST_HEAD(efi_obj_list); > + > +/* > + * If we're running on nasty systems (32bit ARM booting into non-EFI Linux) > + * we need to do trickery with caches. Since we don't want to break the EFI > + * aware boot path, only apply hacks when loading exiting directly (breaking > + * direct Linux EFI booting along the way - oh well). > + */ > +static bool efi_is_direct_boot = true; Is this a case worth supporting? > + > +/* > + * EFI can pass arbitrary additional "tables" containing vendor specific > + * information to the payload. One such table is the FDT table which contains > + * a pointer to a flattened device tree blob. > + * > + * In most cases we want to pass an FDT to the payload, so reserve one slot > of > + * config table space for it. The pointer gets populated by > do_bootefi_exec(). > + */ > +static struct efi_configuration_table efi_conf_table[1]; > + > +/* > + * The "gd" pointer lives in a register on ARM and AArch64 that we declare > + * fixed when compiling U-Boot. However, the payload does not know about that > + * restriction so we need to manually swap its and our view of that register > on > + * EFI callback entry/exit. > + */ > +static volatile void *efi_gd, *app_gd; > + > +/* Called from do_bootefi_exec() */ > +void efi_save_gd(void) > +{ > + efi_gd = gd; > +} > + > +/* Called on every callback entry */ > +void efi_restore_gd(void) > +{ > + /* Only restore if we're already in EFI context */ > + if (!efi_gd) > + return; > + > + if (gd != efi_gd) > + app_gd = gd; > + gd = efi_gd; > +} > + > +/* Called on every callback exit */ > +efi_status_t efi_exit_func(efi_status_t ret) > +{ > + gd = app_gd; > + return ret; > +} > + > +static efi_status_t efi_unsupported(const char *funcname) > +{ > +#ifdef DEBUG_EFI > + printf("EFI: App called into unimplemented function %s\n", funcname); > +#endif > + return EFI_EXIT(EFI_UNSUPPORTED); > +} > + > +static int guidcmp(const efi_guid_t *g1, const efi_guid_t *g2) > +{ > + return memcmp(g1, g2, sizeof(efi_guid_t)); > +} Not necessary for this set, but this could be useful as a generic function. (at least part_efi.c could be another consumer) > + > +static unsigned long EFIAPI efi_raise_tpl(unsigned long new_tpl) > +{ > + EFI_ENTRY("0x%lx", new_tpl); > + return EFI_EXIT(0); > +} > + > +static void EFIAPI efi_restore_tpl(unsigned long old_tpl) > +{ > + EFI_ENTRY("0x%lx", old_tpl); > + EFI_EXIT(efi_unsupported(__func__)); > +} > + > +efi_status_t EFIAPI efi_allocate_pages_ext(int type, int memory_type, > + unsigned long pages, > + uint64_t *memory) > +{ > + efi_status_t r; > + > + EFI_ENTRY("%d, %d, 0x%lx, %p", type, memory_type, pages, memory); > + r = efi_allocate_pages(type, memory_type, pages, memory); > + return EFI_EXIT(r); > +} > + > +efi_status_t EFIAPI efi_free_pages_ext(uint64_t memory, unsigned long pages) > +{ > + efi_status_t r; > + > + EFI_ENTRY("%"PRIx64", 0x%lx", memory, pages); > + r = efi_free_pages(memory, pages); > + return EFI_EXIT(r); > +} > + > +efi_status_t EFIAPI efi_get_memory_map_ext(unsigned long *memory_map_size, > + struct efi_mem_desc *memory_map, > + unsigned long *map_key, > + unsigned long *descriptor_size, > + uint32_t *descriptor_version) > +{ > + efi_status_t r; > + > + EFI_ENTRY("%p, %p, %p, %p, %p", memory_map_size, memory_map, > + map_key, descriptor_size, descriptor_version); > + r = efi_get_memory_map(memory_map_size, memory_map, map_key, > + descriptor_size, descriptor_version); > + return EFI_EXIT(r); > +} > + > +static efi_status_t EFIAPI efi_allocate_pool(int pool_type, unsigned long > size, > + void **buffer) > +{ > + return efi_allocate_pages(0, pool_type, (size + 0xfff) >> 12, > (void*)buffer); > +} > + > +static efi_status_t EFIAPI efi_free_pool(void *buffer) > +{ > + return efi_free_pages((ulong)buffer, 0); > +} > + > +/* > + * Our event capabilities are very limited. Only support a single > + * event to exist, so we don't need to maintain lists. > + */ > +static struct { > + enum efi_event_type type; > + u32 trigger_type; > + u32 trigger_time; > + u64 trigger_next; > + unsigned long notify_tpl; > + void (*notify_function) (void *event, void *context); > + void *notify_context; > +} efi_event = { > + /* Disable timers on bootup */ > + .trigger_next = -1ULL, > +}; > + > +static efi_status_t EFIAPI efi_create_event( > + enum efi_event_type type, ulong notify_tpl, > + void (*notify_function) (void *event, void *context), > + void *notify_context, void **event) > +{ > + EFI_ENTRY("%d, 0x%lx, %p, %p", type, notify_tpl, notify_function, > + notify_context); > + if (efi_event.notify_function) { > + /* We only support one event at a time */ > + return EFI_EXIT(EFI_OUT_OF_RESOURCES); > + } > + > + efi_event.type = type; > + efi_event.notify_tpl = notify_tpl; > + efi_event.notify_function = notify_function; > + efi_event.notify_context = notify_context; > + *event = &efi_event; > + > + return EFI_EXIT(EFI_SUCCESS); > +} > + > +/* > + * Our timers have to work without interrupts, so we check whenever keyboard > + * input or disk accesses happen if enough time elapsed for it to fire. > + */ > +void efi_timer_check(void) > +{ > + u64 now = timer_get_us(); > + > + if (now >= efi_event.trigger_next) { > + /* Triggering! */ > + if (efi_event.trigger_type == EFI_TIMER_PERIODIC) > + efi_event.trigger_next += efi_event.trigger_time / 10; > + efi_event.notify_function(&efi_event, efi_event.notify_context); > + } > + > + WATCHDOG_RESET(); > +} > + > +static efi_status_t EFIAPI efi_set_timer(void *event, int type, > + uint64_t trigger_time) > +{ > + /* We don't have 64bit division available everywhere, so limit timer > + * distances to 32bit bits. */ > + u32 trigger32 = trigger_time; > + > + EFI_ENTRY("%p, %d, %"PRIx64, event, type, trigger_time); > + > + if (trigger32 < trigger_time) { > + printf("WARNING: Truncating timer from %"PRIx64" to %x\n", > + trigger_time, trigger32); > + } > + > + if (event != &efi_event) { > + /* We only support one event at a time */ > + return EFI_EXIT(EFI_INVALID_PARAMETER); > + } > + > + switch (type) { > + case EFI_TIMER_STOP: > + efi_event.trigger_next = -1ULL; > + break; > + case EFI_TIMER_PERIODIC: > + case EFI_TIMER_RELATIVE: > + efi_event.trigger_next = timer_get_us() + (trigger32 / 10); > + break; > + default: > + return EFI_EXIT(EFI_INVALID_PARAMETER); > + } > + efi_event.trigger_type = type; > + efi_event.trigger_time = trigger_time; > + > + return EFI_EXIT(EFI_SUCCESS); > +} > + > +static efi_status_t EFIAPI efi_wait_for_event(unsigned long num_events, > + void *event, unsigned long *index) > +{ > + u64 now; > + > + EFI_ENTRY("%ld, %p, %p", num_events, event, index); > + > + now = timer_get_us(); > + while (now < efi_event.trigger_next) { } > + efi_timer_check(); > + > + return EFI_EXIT(EFI_SUCCESS); > +} > + > +static efi_status_t EFIAPI efi_signal_event(void *event) > +{ > + EFI_ENTRY("%p", event); > + return EFI_EXIT(EFI_SUCCESS); > +} > + > +static efi_status_t EFIAPI efi_close_event(void *event) > +{ > + EFI_ENTRY("%p", event); > + efi_event.trigger_next = -1ULL; > + return EFI_EXIT(EFI_SUCCESS); > +} > + > +static efi_status_t EFIAPI efi_check_event(void *event) > +{ > + EFI_ENTRY("%p", event); > + return EFI_EXIT(EFI_NOT_READY); > +} > + > +static efi_status_t EFIAPI efi_install_protocol_interface(void **handle, > + efi_guid_t *protocol, int protocol_interface_type, > + void *protocol_interface) > +{ > + EFI_ENTRY("%p, %p, %d, %p", handle, protocol, protocol_interface_type, > + protocol_interface); > + return EFI_EXIT(EFI_OUT_OF_RESOURCES); > +} > +static efi_status_t EFIAPI efi_reinstall_protocol_interface(void *handle, > + efi_guid_t *protocol, void *old_interface, > + void *new_interface) > +{ > + EFI_ENTRY("%p, %p, %p, %p", handle, protocol, old_interface, > + new_interface); > + return EFI_EXIT(EFI_ACCESS_DENIED); > +} > + > +static efi_status_t EFIAPI efi_uninstall_protocol_interface(void *handle, > + efi_guid_t *protocol, void *protocol_interface) > +{ > + EFI_ENTRY("%p, %p, %p", handle, protocol, protocol_interface); > + return EFI_EXIT(EFI_NOT_FOUND); > +} > + > +static efi_status_t EFIAPI efi_register_protocol_notify(efi_guid_t *protocol, > + void *event, > + void **registration) > +{ > + EFI_ENTRY("%p, %p, %p", protocol, event, registration); > + return EFI_EXIT(EFI_OUT_OF_RESOURCES); > +} > + > +static int efi_search(enum efi_locate_search_type search_type, > + efi_guid_t *protocol, void *search_key, > + struct efi_object *efiobj) > +{ > + int i; > + > + switch (search_type) { > + case all_handles: > + return 0; > + case by_register_notify: > + return -1; > + case by_protocol: > + for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) { > + const efi_guid_t *guid = efiobj->protocols[i].guid; > + if (guid && !guidcmp(guid, protocol)) > + return 0; > + } > + return -1; > + } > + > + return -1; > +} > + > +static efi_status_t EFIAPI efi_locate_handle( > + enum efi_locate_search_type search_type, > + efi_guid_t *protocol, void *search_key, > + unsigned long *buffer_size, efi_handle_t *buffer) > +{ > + struct list_head *lhandle; > + unsigned long size = 0; > + > + EFI_ENTRY("%d, %p, %p, %p, %p", search_type, protocol, search_key, > + buffer_size, buffer); > + > + /* Count how much space we need */ > + list_for_each(lhandle, &efi_obj_list) { > + struct efi_object *efiobj; > + efiobj = list_entry(lhandle, struct efi_object, link); > + if (!efi_search(search_type, protocol, search_key, efiobj)) { > + size += sizeof(void*); > + } > + } > + > + if (*buffer_size < size) { > + *buffer_size = size; > + return EFI_EXIT(EFI_BUFFER_TOO_SMALL); > + } > + > + /* Then fill the array */ > + list_for_each(lhandle, &efi_obj_list) { > + struct efi_object *efiobj; > + efiobj = list_entry(lhandle, struct efi_object, link); > + if (!efi_search(search_type, protocol, search_key, efiobj)) { > + *(buffer++) = efiobj->handle; > + } > + } > + > + *buffer_size = size; > + return EFI_EXIT(EFI_SUCCESS); > +} > + > +static efi_status_t EFIAPI efi_locate_device_path(efi_guid_t *protocol, > + struct efi_device_path **device_path, > + efi_handle_t *device) > +{ > + EFI_ENTRY("%p, %p, %p", protocol, device_path, device); > + return EFI_EXIT(EFI_NOT_FOUND); > +} > + > +static efi_status_t EFIAPI efi_install_configuration_table(efi_guid_t *guid, > + void *table) > +{ > + int i; > + > + EFI_ENTRY("%p, %p", guid, table); > + > + /* Check for guid override */ > + for (i = 0; i < systab.nr_tables; i++) { > + if (!guidcmp(guid, &efi_conf_table[i].guid)) { > + efi_conf_table[i].table = table; > + return EFI_EXIT(EFI_SUCCESS); > + } > + } > + > + /* No override, check for overflow */ > + if (i >= ARRAY_SIZE(efi_conf_table)) > + return EFI_EXIT(EFI_OUT_OF_RESOURCES); > + > + /* Add a new entry */ > + memcpy(&efi_conf_table[i].guid, guid, sizeof(*guid)); > + efi_conf_table[i].table = table; > + systab.nr_tables = i; > + > + return EFI_EXIT(EFI_SUCCESS); > +} > + > +static efi_status_t EFIAPI efi_load_image(bool boot_policy, > + efi_handle_t parent_image, > + struct efi_device_path *file_path, > + void *source_buffer, > + unsigned long source_size, > + efi_handle_t *image_handle) > +{ > + static struct efi_object loaded_image_info_obj = { > + .protocols = { > + { > + .guid = &efi_guid_loaded_image, > + .open = &efi_return_handle, > + }, > + }, > + }; > + struct efi_loaded_image *info; > + struct efi_object *obj; > + > + EFI_ENTRY("%d, %p, %p, %p, %ld, %p", boot_policy, parent_image, > + file_path, source_buffer, source_size, image_handle); > + info = malloc(sizeof(*info)); > + obj = malloc(sizeof(loaded_image_info_obj)); > + memset(info, 0, sizeof(*info)); > + memcpy(obj, &loaded_image_info_obj, sizeof(loaded_image_info_obj)); > + obj->handle = info; > + info->file_path = file_path; > + info->reserved = efi_load_pe(source_buffer, info); > + if (!info->reserved) { > + free(info); > + free(obj); > + return EFI_EXIT(EFI_UNSUPPORTED); > + } > + > + *image_handle = info; > + list_add_tail(&obj->link, &efi_obj_list); > + > + return EFI_EXIT(EFI_SUCCESS); > +} > + > +static efi_status_t EFIAPI efi_start_image(efi_handle_t image_handle, > + unsigned long *exit_data_size, > + s16 **exit_data) > +{ > + ulong (*entry)(void *image_handle, struct efi_system_table *st); > + struct efi_loaded_image *info = image_handle; > + > + EFI_ENTRY("%p, %p, %p", image_handle, exit_data_size, exit_data); > + entry = info->reserved; > + > + efi_is_direct_boot = false; > + > + /* call the image! */ > + entry(image_handle, &systab); > + > + /* Should usually never get here */ > + return EFI_EXIT(EFI_SUCCESS); > +} > + > +static efi_status_t EFIAPI efi_exit(void *image_handle, long exit_status, > + unsigned long exit_data_size, > + uint16_t *exit_data) > +{ > + EFI_ENTRY("%p, %ld, %ld, %p", image_handle, exit_status, > + exit_data_size, exit_data); > + return EFI_EXIT(efi_unsupported(__func__)); > +} > + > +static struct efi_object *efi_search_obj(void *handle) > +{ > + struct list_head *lhandle; > + > + list_for_each(lhandle, &efi_obj_list) { > + struct efi_object *efiobj; > + efiobj = list_entry(lhandle, struct efi_object, link); > + if (efiobj->handle == handle) > + return efiobj; > + } > + > + return NULL; > +} > + > +static efi_status_t EFIAPI efi_unload_image(void *image_handle) > +{ > + struct efi_object *efiobj; > + > + EFI_ENTRY("%p", image_handle); > + efiobj = efi_search_obj(image_handle); > + if (efiobj) > + list_del(&efiobj->link); > + > + return EFI_EXIT(EFI_SUCCESS); > +} > + > +static void efi_exit_caches(void) > +{ > +#if defined(CONFIG_ARM) && !defined(CONFIG_ARM64) > + /* > + * Grub on 32bit ARM needs to have caches disabled before jumping into > + * a zImage, but does not know of all cache layers. Give it a hand. > + */ Should we even be doing this hack? EFI stub support for 32-bit ARM is now (finally) upstream. > + if (efi_is_direct_boot) > + cleanup_before_linux(); > +#endif > +} > + > +static efi_status_t EFIAPI efi_exit_boot_services(void *image_handle, > + unsigned long map_key) > +{ > + EFI_ENTRY("%p, %ld", image_handle, map_key); > + > + /* Fix up caches for EFI payloads if necessary */ > + efi_exit_caches(); > + > + /* This stops all lingering devices */ > + bootm_disable_interrupts(); > + > + /* Give the payload some time to boot */ > + WATCHDOG_RESET(); > + > + return EFI_EXIT(EFI_SUCCESS); > +} > + > +static efi_status_t EFIAPI efi_get_next_monotonic_count(uint64_t *count) > +{ > + static uint64_t mono = 0; > + EFI_ENTRY("%p", count); > + *count = mono++; > + return EFI_EXIT(EFI_SUCCESS); > +} > + > +static efi_status_t EFIAPI efi_stall(unsigned long microseconds) > +{ > + EFI_ENTRY("%ld", microseconds); > + udelay(microseconds); > + return EFI_EXIT(EFI_SUCCESS); > +} > + > +static efi_status_t EFIAPI efi_set_watchdog_timer(unsigned long timeout, > + uint64_t watchdog_code, > + unsigned long data_size, > + uint16_t *watchdog_data) > +{ > + EFI_ENTRY("%ld, 0x%"PRIx64", %ld, %p", timeout, watchdog_code, > + data_size, watchdog_data); > + return EFI_EXIT(efi_unsupported(__func__)); > +} > + > +static efi_status_t EFIAPI efi_connect_controller( > + efi_handle_t controller_handle, > + efi_handle_t *driver_image_handle, > + struct efi_device_path *remain_device_path, > + bool recursive) > +{ > + EFI_ENTRY("%p, %p, %p, %d", controller_handle, driver_image_handle, > + remain_device_path, recursive); > + return EFI_EXIT(EFI_NOT_FOUND); > +} > + > +static efi_status_t EFIAPI efi_disconnect_controller(void *controller_handle, > + void *driver_image_handle, > + void *child_handle) > +{ > + EFI_ENTRY("%p, %p, %p", controller_handle, driver_image_handle, > + child_handle); > + return EFI_EXIT(EFI_INVALID_PARAMETER); > +} > + > +static efi_status_t EFIAPI efi_close_protocol(void *handle, > + efi_guid_t *protocol, > + void *agent_handle, > + void *controller_handle) > +{ > + EFI_ENTRY("%p, %p, %p, %p", handle, protocol, agent_handle, > + controller_handle); > + return EFI_EXIT(EFI_NOT_FOUND); > +} > + > +static efi_status_t EFIAPI efi_open_protocol_information(efi_handle_t handle, > + efi_guid_t *protocol, > + struct efi_open_protocol_info_entry **entry_buffer, > + unsigned long *entry_count) > +{ > + EFI_ENTRY("%p, %p, %p, %p", handle, protocol, entry_buffer, > + entry_count); > + return EFI_EXIT(EFI_NOT_FOUND); > +} > + > +static efi_status_t EFIAPI efi_protocols_per_handle(void *handle, > + efi_guid_t ***protocol_buffer, > + unsigned long *protocol_buffer_count) > +{ > + EFI_ENTRY("%p, %p, %p", handle, protocol_buffer, > + protocol_buffer_count); > + return EFI_EXIT(EFI_OUT_OF_RESOURCES); > +} > + > +static efi_status_t EFIAPI efi_locate_handle_buffer( > + enum efi_locate_search_type search_type, > + efi_guid_t *protocol, void *search_key, > + unsigned long *no_handles, efi_handle_t **buffer) > +{ > + EFI_ENTRY("%d, %p, %p, %p, %p", search_type, protocol, search_key, > + no_handles, buffer); > + return EFI_EXIT(EFI_NOT_FOUND); > +} > + > +static struct efi_class_map efi_class_maps[] = { > + { > + .guid = &efi_guid_console_control, > + .interface = &efi_console_control > + }, > +}; > + > +static efi_status_t EFIAPI efi_locate_protocol(efi_guid_t *protocol, > + void *registration, > + void **protocol_interface) > +{ > + int i; > + > + EFI_ENTRY("%p, %p, %p", protocol, registration, protocol_interface); > + for (i = 0; i < ARRAY_SIZE(efi_class_maps); i++) { > + struct efi_class_map *curmap = &efi_class_maps[i]; > + if (!guidcmp(protocol, curmap->guid)) { > + *protocol_interface = (void*)curmap->interface; > + return EFI_EXIT(EFI_SUCCESS); > + } > + } > + > + return EFI_EXIT(EFI_NOT_FOUND); > +} > + > +static efi_status_t EFIAPI efi_install_multiple_protocol_interfaces( > + void **handle, ...) > +{ > + EFI_ENTRY("%p", handle); > + return EFI_EXIT(EFI_OUT_OF_RESOURCES); > +} > + > +static efi_status_t EFIAPI efi_uninstall_multiple_protocol_interfaces( > + void *handle, ...) > +{ > + EFI_ENTRY("%p", handle); > + return EFI_EXIT(EFI_INVALID_PARAMETER); > +} > + > +static efi_status_t EFIAPI efi_calculate_crc32(void *data, > + unsigned long data_size, > + uint32_t *crc32_p) > +{ > + EFI_ENTRY("%p, %ld", data, data_size); > + *crc32_p = crc32(0, data, data_size); > + return EFI_EXIT(EFI_SUCCESS); > +} > + > +static void EFIAPI efi_copy_mem(void *destination, void *source, > + unsigned long length) > +{ > + EFI_ENTRY("%p, %p, %ld", destination, source, length); > + memcpy(destination, source, length); > +} > + > +static void EFIAPI efi_set_mem(void *buffer, unsigned long size, uint8_t > value) > +{ > + EFI_ENTRY("%p, %ld, 0x%x", buffer, size, value); > + memset(buffer, value, size); > +} > + > +static efi_status_t EFIAPI efi_open_protocol( > + void *handle, efi_guid_t *protocol, > + void **protocol_interface, void *agent_handle, > + void *controller_handle, uint32_t attributes) > +{ > + struct list_head *lhandle; > + int i; > + efi_status_t r = EFI_UNSUPPORTED; > + > + EFI_ENTRY("%p, %p, %p, %p, %p, 0x%x", handle, protocol, > + protocol_interface, agent_handle, controller_handle, > + attributes); > + list_for_each(lhandle, &efi_obj_list) { > + struct efi_object *efiobj; > + efiobj = list_entry(lhandle, struct efi_object, link); > + > + if (efiobj->handle != handle) > + continue; > + > + for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) { > + struct efi_handler *handler = &efiobj->protocols[i]; > + const efi_guid_t *hprotocol = handler->guid; > + if (!hprotocol) > + break; > + if (!guidcmp(hprotocol, protocol)) { > + r = handler->open(handle, protocol, > + protocol_interface, agent_handle, > + controller_handle, attributes); > + goto out; > + } > + } > + } > + > +out: > + return EFI_EXIT(r); > +} > + > +static efi_status_t EFIAPI efi_handle_protocol(void *handle, > + efi_guid_t *protocol, > + void **protocol_interface) > +{ > + EFI_ENTRY("%p, %p, %p", handle, protocol, protocol_interface); > + return efi_open_protocol(handle, protocol, protocol_interface, > + NULL, NULL, 0); > +} > + > +static const struct efi_boot_services efi_boot_services = { > + .hdr = { > + .headersize = sizeof(struct efi_table_hdr), > + }, > + .raise_tpl = efi_raise_tpl, > + .restore_tpl = efi_restore_tpl, > + .allocate_pages = efi_allocate_pages_ext, > + .free_pages = efi_free_pages_ext, > + .get_memory_map = efi_get_memory_map_ext, > + .allocate_pool = efi_allocate_pool, > + .free_pool = efi_free_pool, > + .create_event = efi_create_event, > + .set_timer = efi_set_timer, > + .wait_for_event = efi_wait_for_event, > + .signal_event = efi_signal_event, > + .close_event = efi_close_event, > + .check_event = efi_check_event, > + .install_protocol_interface = efi_install_protocol_interface, > + .reinstall_protocol_interface = efi_reinstall_protocol_interface, > + .uninstall_protocol_interface = efi_uninstall_protocol_interface, > + .handle_protocol = efi_handle_protocol, > + .reserved = NULL, > + .register_protocol_notify = efi_register_protocol_notify, > + .locate_handle = efi_locate_handle, > + .locate_device_path = efi_locate_device_path, > + .install_configuration_table = efi_install_configuration_table, > + .load_image = efi_load_image, > + .start_image = efi_start_image, > + .exit = (void*)efi_exit, > + .unload_image = efi_unload_image, > + .exit_boot_services = efi_exit_boot_services, > + .get_next_monotonic_count = efi_get_next_monotonic_count, > + .stall = efi_stall, > + .set_watchdog_timer = efi_set_watchdog_timer, > + .connect_controller = efi_connect_controller, > + .disconnect_controller = efi_disconnect_controller, > + .open_protocol = efi_open_protocol, > + .close_protocol = efi_close_protocol, > + .open_protocol_information = efi_open_protocol_information, > + .protocols_per_handle = efi_protocols_per_handle, > + .locate_handle_buffer = efi_locate_handle_buffer, > + .locate_protocol = efi_locate_protocol, > + .install_multiple_protocol_interfaces = > efi_install_multiple_protocol_interfaces, > + .uninstall_multiple_protocol_interfaces = > efi_uninstall_multiple_protocol_interfaces, > + .calculate_crc32 = efi_calculate_crc32, > + .copy_mem = efi_copy_mem, > + .set_mem = efi_set_mem, > +}; > + > + > +static uint16_t firmware_vendor[] = > + { 'D','a','s',' ','U','-','b','o','o','t',0 }; > + > +struct efi_system_table systab = { > + .hdr = { > + .signature = EFI_SYSTEM_TABLE_SIGNATURE, > + .revision = 0x20005, /* 2.5 */ > + .headersize = sizeof(struct efi_table_hdr), > + }, > + .fw_vendor = (long)firmware_vendor, > + .con_in = (void*)&efi_con_in, > + .con_out = (void*)&efi_con_out, > + .std_err = (void*)&efi_con_out, > + .runtime = (void*)&efi_runtime_services, > + .boottime = (void*)&efi_boot_services, > + .nr_tables = 0, > + .tables = (void*)efi_conf_table, > +}; > -- > 2.6.2 > No further technical comments on this patch. _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot