LIST_HEAD(efi_runtime_mmio);
static efi_status_t __efi_runtime EFIAPI efi_unimplemented(void);
-static efi_status_t __efi_runtime EFIAPI efi_device_error(void);
-static efi_status_t __efi_runtime EFIAPI efi_invalid_parameter(void);
/*
- * TODO(sjg@chromium.org): These defines and structs should come from the elf
- * header for each arch (or a generic header) rather than being repeated here.
+ * TODO(sjg@chromium.org): These defines and structures should come from the ELF
+ * header for each architecture (or a generic header) rather than being repeated
+ * here.
*/
#if defined(__aarch64__)
#define R_RELATIVE R_AARCH64_RELATIVE
#elif defined(__arm__)
#define R_RELATIVE R_ARM_RELATIVE
#define R_MASK 0xffULL
-#elif defined(__x86_64__) || defined(__i386__)
+#elif defined(__i386__)
#define R_RELATIVE R_386_RELATIVE
#define R_MASK 0xffULL
+#elif defined(__x86_64__)
+#define R_RELATIVE R_X86_64_RELATIVE
+#define R_MASK 0xffffffffULL
+#define IS_RELA 1
#elif defined(__riscv)
#define R_RELATIVE R_RISCV_RELATIVE
#define R_MASK 0xffULL
long addend;
};
+static __efi_runtime_data struct efi_mem_desc *efi_virtmap;
+static __efi_runtime_data efi_uintn_t efi_descriptor_count;
+static __efi_runtime_data efi_uintn_t efi_descriptor_size;
+
/*
- * EFI Runtime code lives in 2 stages. In the first stage, U-Boot and an EFI
+ * EFI runtime code lives in two stages. In the first stage, U-Boot and an EFI
* payload are running concurrently at the same time. In this mode, we can
* handle a good number of runtime callbacks
*/
+efi_status_t efi_init_runtime_supported(void)
+{
+ u16 efi_runtime_services_supported =
+ EFI_RT_SUPPORTED_SET_VIRTUAL_ADDRESS_MAP |
+ EFI_RT_SUPPORTED_CONVERT_POINTER;
+
+ /*
+ * This value must be synced with efi_runtime_detach_list
+ * as well as efi_runtime_services.
+ */
+#ifdef CONFIG_EFI_HAVE_RUNTIME_RESET
+ efi_runtime_services_supported |= EFI_RT_SUPPORTED_RESET_SYSTEM;
+#endif
+
+ return EFI_CALL(efi_set_variable(L"RuntimeServicesSupported",
+ &efi_global_variable_guid,
+ EFI_VARIABLE_BOOTSERVICE_ACCESS |
+ EFI_VARIABLE_RUNTIME_ACCESS,
+ sizeof(efi_runtime_services_supported),
+ &efi_runtime_services_supported));
+}
+
+/**
+ * efi_update_table_header_crc32() - Update crc32 in table header
+ *
+ * @table: EFI table
+ */
+void __efi_runtime efi_update_table_header_crc32(struct efi_table_hdr *table)
+{
+ table->crc32 = 0;
+ table->crc32 = crc32(0, (const unsigned char *)table,
+ table->headersize);
+}
+
+/**
+ * efi_reset_system_boottime() - reset system at boot time
+ *
+ * This function implements the ResetSystem() runtime service before
+ * SetVirtualAddressMap() is called.
+ *
+ * See the Unified Extensible Firmware Interface (UEFI) specification for
+ * details.
+ *
+ * @reset_type: type of reset to perform
+ * @reset_status: status code for the reset
+ * @data_size: size of reset_data
+ * @reset_data: information about the reset
+ */
static void EFIAPI efi_reset_system_boottime(
enum efi_reset_type reset_type,
efi_status_t reset_status,
if (evt->group &&
!guidcmp(evt->group,
&efi_guid_event_group_reset_system)) {
- efi_signal_event(evt, false);
+ efi_signal_event(evt);
break;
}
}
do_reset(NULL, 0, 0, NULL);
break;
case EFI_RESET_SHUTDOWN:
- /* We don't have anything to map this to */
+#ifdef CONFIG_CMD_POWEROFF
+ do_poweroff(NULL, 0, 0, NULL);
+#endif
break;
}
}
/**
- * efi_get_time_boottime - get current time
+ * efi_get_time_boottime() - get current time at boot time
+ *
+ * This function implements the GetTime runtime service before
+ * SetVirtualAddressMap() is called.
*
- * This function implements the GetTime runtime service.
* See the Unified Extensible Firmware Interface (UEFI) specification
* for details.
*
* @time: pointer to structure to receive current time
* @capabilities: pointer to structure to receive RTC properties
- * Return Value: status code
+ * Returns: status code
*/
static efi_status_t EFIAPI efi_get_time_boottime(
struct efi_time *time,
struct efi_time_cap *capabilities)
{
-#ifdef CONFIG_DM_RTC
+#ifdef CONFIG_EFI_GET_TIME
efi_status_t ret = EFI_SUCCESS;
- int r;
struct rtc_time tm;
struct udevice *dev;
ret = EFI_INVALID_PARAMETER;
goto out;
}
-
- r = uclass_get_device(UCLASS_RTC, 0, &dev);
- if (!r)
- r = dm_rtc_get(dev, &tm);
- if (r) {
+ if (uclass_get_device(UCLASS_RTC, 0, &dev) ||
+ dm_rtc_get(dev, &tm)) {
+ ret = EFI_UNSUPPORTED;
+ goto out;
+ }
+ if (dm_rtc_get(dev, &tm)) {
ret = EFI_DEVICE_ERROR;
goto out;
}
time->hour = tm.tm_hour;
time->minute = tm.tm_min;
time->second = tm.tm_sec;
- time->daylight = EFI_TIME_ADJUST_DAYLIGHT;
- if (tm.tm_isdst > 0)
- time->daylight |= EFI_TIME_IN_DAYLIGHT;
+ if (tm.tm_isdst)
+ time->daylight =
+ EFI_TIME_ADJUST_DAYLIGHT | EFI_TIME_IN_DAYLIGHT;
time->timezone = EFI_UNSPECIFIED_TIMEZONE;
if (capabilities) {
return EFI_EXIT(ret);
#else
EFI_ENTRY("%p %p", time, capabilities);
- return EFI_EXIT(EFI_DEVICE_ERROR);
+ return EFI_EXIT(EFI_UNSUPPORTED);
#endif
}
-/* Boards may override the helpers below to implement RTS functionality */
+#ifdef CONFIG_EFI_SET_TIME
+
+/**
+ * efi_validate_time() - checks if timestamp is valid
+ *
+ * @time: timestamp to validate
+ * Returns: 0 if timestamp is valid, 1 otherwise
+ */
+static int efi_validate_time(struct efi_time *time)
+{
+ return (!time ||
+ time->year < 1900 || time->year > 9999 ||
+ !time->month || time->month > 12 || !time->day ||
+ time->day > rtc_month_days(time->month - 1, time->year) ||
+ time->hour > 23 || time->minute > 59 || time->second > 59 ||
+ time->nanosecond > 999999999 ||
+ time->daylight &
+ ~(EFI_TIME_IN_DAYLIGHT | EFI_TIME_ADJUST_DAYLIGHT) ||
+ ((time->timezone < -1440 || time->timezone > 1440) &&
+ time->timezone != EFI_UNSPECIFIED_TIMEZONE));
+}
+
+#endif
+
+/**
+ * efi_set_time_boottime() - set current time
+ *
+ * This function implements the SetTime() runtime service before
+ * SetVirtualAddressMap() is called.
+ *
+ * See the Unified Extensible Firmware Interface (UEFI) specification
+ * for details.
+ *
+ * @time: pointer to structure to with current time
+ * Returns: status code
+ */
+static efi_status_t EFIAPI efi_set_time_boottime(struct efi_time *time)
+{
+#ifdef CONFIG_EFI_SET_TIME
+ efi_status_t ret = EFI_SUCCESS;
+ struct rtc_time tm;
+ struct udevice *dev;
+
+ EFI_ENTRY("%p", time);
+
+ if (efi_validate_time(time)) {
+ ret = EFI_INVALID_PARAMETER;
+ goto out;
+ }
+
+ if (uclass_get_device(UCLASS_RTC, 0, &dev)) {
+ ret = EFI_UNSUPPORTED;
+ goto out;
+ }
+ memset(&tm, 0, sizeof(tm));
+ tm.tm_year = time->year;
+ tm.tm_mon = time->month;
+ tm.tm_mday = time->day;
+ tm.tm_hour = time->hour;
+ tm.tm_min = time->minute;
+ tm.tm_sec = time->second;
+ tm.tm_isdst = time->daylight ==
+ (EFI_TIME_ADJUST_DAYLIGHT | EFI_TIME_IN_DAYLIGHT);
+ /* Calculate day of week */
+ rtc_calc_weekday(&tm);
+
+ if (dm_rtc_set(dev, &tm))
+ ret = EFI_DEVICE_ERROR;
+out:
+ return EFI_EXIT(ret);
+#else
+ EFI_ENTRY("%p", time);
+ return EFI_EXIT(EFI_UNSUPPORTED);
+#endif
+}
+/**
+ * efi_reset_system() - reset system
+ *
+ * This function implements the ResetSystem() runtime service after
+ * SetVirtualAddressMap() is called. It only executes an endless loop.
+ * Boards may override the helpers below to implement reset functionality.
+ *
+ * See the Unified Extensible Firmware Interface (UEFI) specification for
+ * details.
+ *
+ * @reset_type: type of reset to perform
+ * @reset_status: status code for the reset
+ * @data_size: size of reset_data
+ * @reset_data: information about the reset
+ */
void __weak __efi_runtime EFIAPI efi_reset_system(
enum efi_reset_type reset_type,
efi_status_t reset_status,
while (1) { }
}
+/**
+ * efi_reset_system_init() - initialize the reset driver
+ *
+ * Boards may override this function to initialize the reset driver.
+ */
efi_status_t __weak efi_reset_system_init(void)
{
return EFI_SUCCESS;
}
+/**
+ * efi_get_time() - get current time
+ *
+ * This function implements the GetTime runtime service after
+ * SetVirtualAddressMap() is called. As the U-Boot driver are not available
+ * anymore only an error code is returned.
+ *
+ * See the Unified Extensible Firmware Interface (UEFI) specification
+ * for details.
+ *
+ * @time: pointer to structure to receive current time
+ * @capabilities: pointer to structure to receive RTC properties
+ * Returns: status code
+ */
efi_status_t __weak __efi_runtime EFIAPI efi_get_time(
struct efi_time *time,
struct efi_time_cap *capabilities)
{
- /* Nothing we can do */
- return EFI_DEVICE_ERROR;
+ return EFI_UNSUPPORTED;
}
-struct efi_runtime_detach_list_struct {
- void *ptr;
- void *patchto;
-};
+/**
+ * efi_set_time() - set current time
+ *
+ * This function implements the SetTime runtime service after
+ * SetVirtualAddressMap() is called. As the U-Boot driver are not available
+ * anymore only an error code is returned.
+ *
+ * See the Unified Extensible Firmware Interface (UEFI) specification
+ * for details.
+ *
+ * @time: pointer to structure to with current time
+ * Returns: status code
+ */
+efi_status_t __weak __efi_runtime EFIAPI efi_set_time(struct efi_time *time)
+{
+ return EFI_UNSUPPORTED;
+}
-static const struct efi_runtime_detach_list_struct efi_runtime_detach_list[] = {
- {
- /* do_reset is gone */
- .ptr = &efi_runtime_services.reset_system,
- .patchto = efi_reset_system,
- }, {
- /* invalidate_*cache_all are gone */
- .ptr = &efi_runtime_services.set_virtual_address_map,
- .patchto = &efi_invalid_parameter,
- }, {
- /* RTC accessors are gone */
- .ptr = &efi_runtime_services.get_time,
- .patchto = &efi_get_time,
- }, {
- /* Clean up system table */
- .ptr = &systab.con_in,
- .patchto = NULL,
- }, {
- /* Clean up system table */
- .ptr = &systab.con_out,
- .patchto = NULL,
- }, {
- /* Clean up system table */
- .ptr = &systab.std_err,
- .patchto = NULL,
- }, {
- /* Clean up system table */
- .ptr = &systab.boottime,
- .patchto = NULL,
- }, {
- .ptr = &efi_runtime_services.get_variable,
- .patchto = &efi_device_error,
- }, {
- .ptr = &efi_runtime_services.get_next_variable_name,
- .patchto = &efi_device_error,
- }, {
- .ptr = &efi_runtime_services.set_variable,
- .patchto = &efi_device_error,
- }
-};
+/**
+ * efi_is_runtime_service_pointer() - check if pointer points to runtime table
+ *
+ * @p: pointer to check
+ * Return: true if the pointer points to a service function pointer in the
+ * runtime table
+ */
+static bool efi_is_runtime_service_pointer(void *p)
+{
+ return (p >= (void *)&efi_runtime_services.get_time &&
+ p <= (void *)&efi_runtime_services.query_variable_info) ||
+ p == (void *)&efi_events.prev ||
+ p == (void *)&efi_events.next;
+}
-static bool efi_runtime_tobedetached(void *p)
+/**
+ * efi_runtime_detach() - detach unimplemented runtime functions
+ */
+void efi_runtime_detach(void)
{
- int i;
+ efi_runtime_services.reset_system = efi_reset_system;
+ efi_runtime_services.get_time = efi_get_time;
+ efi_runtime_services.set_time = efi_set_time;
+
+ /* Update CRC32 */
+ efi_update_table_header_crc32(&efi_runtime_services.hdr);
+}
- for (i = 0; i < ARRAY_SIZE(efi_runtime_detach_list); i++)
- if (efi_runtime_detach_list[i].ptr == p)
- return true;
+/**
+ * efi_set_virtual_address_map_runtime() - change from physical to virtual
+ * mapping
+ *
+ * This function implements the SetVirtualAddressMap() runtime service after
+ * it is first called.
+ *
+ * See the Unified Extensible Firmware Interface (UEFI) specification for
+ * details.
+ *
+ * @memory_map_size: size of the virtual map
+ * @descriptor_size: size of an entry in the map
+ * @descriptor_version: version of the map entries
+ * @virtmap: virtual address mapping information
+ * Return: status code EFI_UNSUPPORTED
+ */
+static __efi_runtime efi_status_t EFIAPI efi_set_virtual_address_map_runtime(
+ efi_uintn_t memory_map_size,
+ efi_uintn_t descriptor_size,
+ uint32_t descriptor_version,
+ struct efi_mem_desc *virtmap)
+{
+ return EFI_UNSUPPORTED;
+}
- return false;
+/**
+ * efi_convert_pointer_runtime() - convert from physical to virtual pointer
+ *
+ * This function implements the ConvertPointer() runtime service after
+ * the first call to SetVirtualAddressMap().
+ *
+ * See the Unified Extensible Firmware Interface (UEFI) specification for
+ * details.
+ *
+ * @debug_disposition: indicates if pointer may be converted to NULL
+ * @address: pointer to be converted
+ * Return: status code EFI_UNSUPPORTED
+ */
+static __efi_runtime efi_status_t EFIAPI efi_convert_pointer_runtime(
+ efi_uintn_t debug_disposition, void **address)
+{
+ return EFI_UNSUPPORTED;
}
-static void efi_runtime_detach(ulong offset)
+/**
+ * efi_convert_pointer_runtime() - convert from physical to virtual pointer
+ *
+ * This function implements the ConvertPointer() runtime service until
+ * the first call to SetVirtualAddressMap().
+ *
+ * See the Unified Extensible Firmware Interface (UEFI) specification for
+ * details.
+ *
+ * @debug_disposition: indicates if pointer may be converted to NULL
+ * @address: pointer to be converted
+ * Return: status code EFI_UNSUPPORTED
+ */
+static __efi_runtime efi_status_t EFIAPI efi_convert_pointer(
+ efi_uintn_t debug_disposition, void **address)
{
- int i;
- ulong patchoff = offset - (ulong)gd->relocaddr;
+ efi_physical_addr_t addr = (uintptr_t)*address;
+ efi_uintn_t i;
+ efi_status_t ret = EFI_NOT_FOUND;
- for (i = 0; i < ARRAY_SIZE(efi_runtime_detach_list); i++) {
- ulong patchto = (ulong)efi_runtime_detach_list[i].patchto;
- ulong *p = efi_runtime_detach_list[i].ptr;
- ulong newaddr = patchto ? (patchto + patchoff) : 0;
+ EFI_ENTRY("%zu %p", debug_disposition, address);
- debug("%s: Setting %p to %lx\n", __func__, p, newaddr);
- *p = newaddr;
+ if (!efi_virtmap) {
+ ret = EFI_UNSUPPORTED;
+ goto out;
+ }
+
+ if (!address) {
+ ret = EFI_INVALID_PARAMETER;
+ goto out;
+ }
+
+ for (i = 0; i < efi_descriptor_count; i++) {
+ struct efi_mem_desc *map = (void *)efi_virtmap +
+ (efi_descriptor_size * i);
+
+ if (addr >= map->physical_start &&
+ (addr < map->physical_start
+ + (map->num_pages << EFI_PAGE_SHIFT))) {
+ *address = (void *)(uintptr_t)
+ (addr + map->virtual_start -
+ map->physical_start);
+
+ ret = EFI_SUCCESS;
+ break;
+ }
+ }
+
+out:
+ return EFI_EXIT(ret);
+}
+
+static __efi_runtime void efi_relocate_runtime_table(ulong offset)
+{
+ ulong patchoff;
+ void **pos;
+
+ /* Relocate the runtime services pointers */
+ patchoff = offset - gd->relocaddr;
+ for (pos = (void **)&efi_runtime_services.get_time;
+ pos <= (void **)&efi_runtime_services.query_variable_info; ++pos) {
+ if (*pos)
+ *pos += patchoff;
}
+
+ /*
+ * The entry for SetVirtualAddress() must point to a physical address.
+ * After the first execution the service must return EFI_UNSUPPORTED.
+ */
+ efi_runtime_services.set_virtual_address_map =
+ &efi_set_virtual_address_map_runtime;
+
+ /*
+ * The entry for ConvertPointer() must point to a physical address.
+ * The service is not usable after SetVirtualAddress().
+ */
+ efi_runtime_services.convert_pointer = &efi_convert_pointer_runtime;
+
+ /*
+ * TODO: Update UEFI variable RuntimeServicesSupported removing flags
+ * EFI_RT_SUPPORTED_SET_VIRTUAL_ADDRESS_MAP and
+ * EFI_RT_SUPPORTED_CONVERT_POINTER as required by the UEFI spec 2.8.
+ */
+
+ /* Update CRC32 */
+ efi_update_table_header_crc32(&efi_runtime_services.hdr);
}
/* Relocate EFI runtime to uboot_reloc_base = offset */
p = (void*)((ulong)rel->offset - base) + gd->relocaddr;
- debug("%s: rel->info=%#lx *p=%#lx rel->offset=%p\n", __func__, rel->info, *p, rel->offset);
+ /* The runtime services are updated in efi_runtime_detach() */
+ if (map && efi_is_runtime_service_pointer(p))
+ continue;
+
+ debug("%s: rel->info=%#lx *p=%#lx rel->offset=%p\n", __func__,
+ rel->info, *p, rel->offset);
switch (rel->info & R_MASK) {
case R_RELATIVE:
ulong symidx = rel->info >> SYM_INDEX;
extern struct dyn_sym __dyn_sym_start[];
newaddr = __dyn_sym_start[symidx].addr + offset;
+#ifdef IS_RELA
+ newaddr -= CONFIG_SYS_TEXT_BASE;
+#endif
break;
}
#endif
default:
+ printf("%s: Unknown relocation type %llx\n",
+ __func__, rel->info & R_MASK);
continue;
}
if (map && ((newaddr < map->virtual_start) ||
newaddr > (map->virtual_start +
(map->num_pages << EFI_PAGE_SHIFT)))) {
- if (!efi_runtime_tobedetached(p))
- printf("U-Boot EFI: Relocation at %p is out of "
- "range (%lx)\n", p, newaddr);
+ printf("%s: Relocation at %p is out of range (%lx)\n",
+ __func__, p, newaddr);
continue;
}
invalidate_icache_all();
}
+/**
+ * efi_set_virtual_address_map() - change from physical to virtual mapping
+ *
+ * This function implements the SetVirtualAddressMap() runtime service.
+ *
+ * See the Unified Extensible Firmware Interface (UEFI) specification for
+ * details.
+ *
+ * @memory_map_size: size of the virtual map
+ * @descriptor_size: size of an entry in the map
+ * @descriptor_version: version of the map entries
+ * @virtmap: virtual address mapping information
+ * Return: status code
+ */
static efi_status_t EFIAPI efi_set_virtual_address_map(
- unsigned long memory_map_size,
- unsigned long descriptor_size,
+ efi_uintn_t memory_map_size,
+ efi_uintn_t descriptor_size,
uint32_t descriptor_version,
struct efi_mem_desc *virtmap)
{
- ulong runtime_start = (ulong)&__efi_runtime_start &
- ~(ulong)EFI_PAGE_MASK;
- int n = memory_map_size / descriptor_size;
- int i;
+ efi_uintn_t n = memory_map_size / descriptor_size;
+ efi_uintn_t i;
+ int rt_code_sections = 0;
+ struct efi_event *event;
- EFI_ENTRY("%lx %lx %x %p", memory_map_size, descriptor_size,
+ EFI_ENTRY("%zx %zx %x %p", memory_map_size, descriptor_size,
descriptor_version, virtmap);
+ efi_virtmap = virtmap;
+ efi_descriptor_size = descriptor_size;
+ efi_descriptor_count = n;
+
+ /*
+ * TODO:
+ * Further down we are cheating. While really we should implement
+ * SetVirtualAddressMap() events and ConvertPointer() to allow
+ * dynamically loaded drivers to expose runtime services, we don't
+ * today.
+ *
+ * So let's ensure we see exactly one single runtime section, as
+ * that is the built-in one. If we see more (or less), someone must
+ * have tried adding or removing to that which we don't support yet.
+ * In that case, let's better fail rather than expose broken runtime
+ * services.
+ */
+ for (i = 0; i < n; i++) {
+ struct efi_mem_desc *map = (void*)virtmap +
+ (descriptor_size * i);
+
+ if (map->type == EFI_RUNTIME_SERVICES_CODE)
+ rt_code_sections++;
+ }
+
+ if (rt_code_sections != 1) {
+ /*
+ * We expose exactly one single runtime code section, so
+ * something is definitely going wrong.
+ */
+ return EFI_EXIT(EFI_INVALID_PARAMETER);
+ }
+
+ /* Notify EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE */
+ list_for_each_entry(event, &efi_events, link) {
+ if (event->notify_function)
+ EFI_CALL_VOID(event->notify_function(
+ event, event->notify_context));
+ }
+
/* Rebind mmio pointers */
for (i = 0; i < n; i++) {
struct efi_mem_desc *map = (void*)virtmap +
efi_physical_addr_t map_start = map->physical_start;
efi_physical_addr_t map_len = map->num_pages << EFI_PAGE_SHIFT;
efi_physical_addr_t map_end = map_start + map_len;
+ u64 off = map->virtual_start - map_start;
/* Adjust all mmio pointers in this region */
list_for_each(lhandle, &efi_runtime_mmio) {
link);
if ((map_start <= lmmio->paddr) &&
(map_end >= lmmio->paddr)) {
- u64 off = map->virtual_start - map_start;
uintptr_t new_addr = lmmio->paddr + off;
*lmmio->ptr = (void *)new_addr;
}
}
+ if ((map_start <= (uintptr_t)systab.tables) &&
+ (map_end >= (uintptr_t)systab.tables)) {
+ char *ptr = (char *)systab.tables;
+
+ ptr += off;
+ systab.tables = (struct efi_configuration_table *)ptr;
+ }
}
- /* Move the actual runtime code over */
+ /*
+ * Some runtime services are implemented in a way that we can only offer
+ * them at boottime. Replace those function pointers.
+ *
+ * TODO: move this call to ExitBootServices().
+ */
+ efi_runtime_detach();
+
+ /* Relocate the runtime. See TODO above */
for (i = 0; i < n; i++) {
struct efi_mem_desc *map;
map = (void*)virtmap + (descriptor_size * i);
if (map->type == EFI_RUNTIME_SERVICES_CODE) {
ulong new_offset = map->virtual_start -
- (runtime_start - gd->relocaddr);
+ map->physical_start + gd->relocaddr;
+ efi_relocate_runtime_table(new_offset);
efi_runtime_relocate(new_offset, map);
- /* Once we're virtual, we can no longer handle
- complex callbacks */
- efi_runtime_detach(new_offset);
return EFI_EXIT(EFI_SUCCESS);
}
}
return EFI_EXIT(EFI_INVALID_PARAMETER);
}
+/**
+ * efi_add_runtime_mmio() - add memory-mapped IO region
+ *
+ * This function adds a memory-mapped IO region to the memory map to make it
+ * available at runtime.
+ *
+ * @mmio_ptr: pointer to a pointer to the start of the memory-mapped
+ * IO region
+ * @len: size of the memory-mapped IO region
+ * Returns: status code
+ */
efi_status_t efi_add_runtime_mmio(void *mmio_ptr, u64 len)
{
struct efi_runtime_mmio_list *newmmio;
u64 pages = (len + EFI_PAGE_MASK) >> EFI_PAGE_SHIFT;
uint64_t addr = *(uintptr_t *)mmio_ptr;
- uint64_t retaddr;
+ efi_status_t ret;
- retaddr = efi_add_memory_map(addr, pages, EFI_MMAP_IO, false);
- if (retaddr != addr)
+ ret = efi_add_memory_map(addr, pages, EFI_MMAP_IO, false);
+ if (ret != EFI_SUCCESS)
return EFI_OUT_OF_RESOURCES;
newmmio = calloc(1, sizeof(*newmmio));
* address map calls.
*/
+/**
+ * efi_unimplemented() - replacement function, returns EFI_UNSUPPORTED
+ *
+ * This function is used after SetVirtualAddressMap() is called as replacement
+ * for services that are not available anymore due to constraints of the U-Boot
+ * implementation.
+ *
+ * Return: EFI_UNSUPPORTED
+ */
static efi_status_t __efi_runtime EFIAPI efi_unimplemented(void)
{
return EFI_UNSUPPORTED;
}
-static efi_status_t __efi_runtime EFIAPI efi_device_error(void)
-{
- return EFI_DEVICE_ERROR;
-}
-
-static efi_status_t __efi_runtime EFIAPI efi_invalid_parameter(void)
-{
- return EFI_INVALID_PARAMETER;
-}
-
+/**
+ * efi_update_capsule() - process information from operating system
+ *
+ * This function implements the UpdateCapsule() runtime service.
+ *
+ * See the Unified Extensible Firmware Interface (UEFI) specification for
+ * details.
+ *
+ * @capsule_header_array: pointer to array of virtual pointers
+ * @capsule_count: number of pointers in capsule_header_array
+ * @scatter_gather_list: pointer to arry of physical pointers
+ * Returns: status code
+ */
efi_status_t __efi_runtime EFIAPI efi_update_capsule(
struct efi_capsule_header **capsule_header_array,
efi_uintn_t capsule_count,
return EFI_UNSUPPORTED;
}
+/**
+ * efi_query_capsule_caps() - check if capsule is supported
+ *
+ * This function implements the QueryCapsuleCapabilities() runtime service.
+ *
+ * See the Unified Extensible Firmware Interface (UEFI) specification for
+ * details.
+ *
+ * @capsule_header_array: pointer to array of virtual pointers
+ * @capsule_count: number of pointers in capsule_header_array
+ * @maximum_capsule_size: maximum capsule size
+ * @reset_type: type of reset needed for capsule update
+ * Returns: status code
+ */
efi_status_t __efi_runtime EFIAPI efi_query_capsule_caps(
struct efi_capsule_header **capsule_header_array,
efi_uintn_t capsule_count,
- u64 maximum_capsule_size,
- u32 reset_type)
-{
- return EFI_UNSUPPORTED;
-}
-
-efi_status_t __efi_runtime EFIAPI efi_query_variable_info(
- u32 attributes,
- u64 *maximum_variable_storage_size,
- u64 *remaining_variable_storage_size,
- u64 *maximum_variable_size)
+ u64 *maximum_capsule_size,
+ u32 *reset_type)
{
return EFI_UNSUPPORTED;
}
.headersize = sizeof(struct efi_runtime_services),
},
.get_time = &efi_get_time_boottime,
- .set_time = (void *)&efi_device_error,
+ .set_time = &efi_set_time_boottime,
.get_wakeup_time = (void *)&efi_unimplemented,
.set_wakeup_time = (void *)&efi_unimplemented,
.set_virtual_address_map = &efi_set_virtual_address_map,
- .convert_pointer = (void *)&efi_invalid_parameter,
+ .convert_pointer = efi_convert_pointer,
.get_variable = efi_get_variable,
.get_next_variable_name = efi_get_next_variable_name,
.set_variable = efi_set_variable,
- .get_next_high_mono_count = (void *)&efi_device_error,
+ .get_next_high_mono_count = (void *)&efi_unimplemented,
.reset_system = &efi_reset_system_boottime,
.update_capsule = efi_update_capsule,
.query_capsule_caps = efi_query_capsule_caps,
projects / oweals / u-boot.git / blobdiff