#include <common.h>
#include <command.h>
#include <dm.h>
+#include <elf.h>
#include <efi_loader.h>
#include <rtc.h>
static efi_status_t __efi_runtime EFIAPI efi_device_error(void);
static efi_status_t __efi_runtime EFIAPI efi_invalid_parameter(void);
-#if defined(CONFIG_ARM64)
-#define R_RELATIVE 1027
+/*
+ * 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
#define R_MASK 0xffffffffULL
#define IS_RELA 1
-#elif defined(CONFIG_ARM)
-#define R_RELATIVE 23
+#elif defined(__arm__)
+#define R_RELATIVE R_ARM_RELATIVE
#define R_MASK 0xffULL
-#elif defined(CONFIG_X86)
-#include <asm/elf.h>
+#elif defined(__i386__)
#define R_RELATIVE R_386_RELATIVE
#define R_MASK 0xffULL
-#elif defined(CONFIG_RISCV)
-#include <elf.h>
+#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
#define IS_RELA 1
u32 foo2;
u32 foo3;
};
-#ifdef CONFIG_CPU_RISCV_32
+#if (__riscv_xlen == 32)
#define R_ABSOLUTE R_RISCV_32
#define SYM_INDEX 8
-#else
+#elif (__riscv_xlen == 64)
#define R_ABSOLUTE R_RISCV_64
#define SYM_INDEX 32
+#else
+#error unknown riscv target
#endif
#else
#error Need to add relocation awareness
};
/*
- * 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_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,
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;
}
while (1) { }
}
+/**
+ * efi_get_time_boottime() - get current time at boot time
+ *
+ * This function implements the GetTime runtime service before
+ * SetVirtualAddressMap() is called.
+ *
+ * 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
+ */
static efi_status_t EFIAPI efi_get_time_boottime(
struct efi_time *time,
struct efi_time_cap *capabilities)
{
-#if defined(CONFIG_CMD_DATE) && defined(CONFIG_DM_RTC)
- struct rtc_time tm;
+#ifdef CONFIG_DM_RTC
+ efi_status_t ret = EFI_SUCCESS;
int r;
+ struct rtc_time tm;
struct udevice *dev;
EFI_ENTRY("%p %p", time, capabilities);
- r = uclass_get_device(UCLASS_RTC, 0, &dev);
- if (r)
- return EFI_EXIT(EFI_DEVICE_ERROR);
+ if (!time) {
+ ret = EFI_INVALID_PARAMETER;
+ goto out;
+ }
- r = dm_rtc_get(dev, &tm);
- if (r)
- return EFI_EXIT(EFI_DEVICE_ERROR);
+ r = uclass_get_device(UCLASS_RTC, 0, &dev);
+ if (!r)
+ r = dm_rtc_get(dev, &tm);
+ if (r) {
+ ret = EFI_DEVICE_ERROR;
+ goto out;
+ }
memset(time, 0, sizeof(*time));
time->year = tm.tm_year;
time->day = tm.tm_mday;
time->hour = tm.tm_hour;
time->minute = tm.tm_min;
- time->daylight = tm.tm_isdst;
-
- return EFI_EXIT(EFI_SUCCESS);
+ time->second = tm.tm_sec;
+ time->daylight = EFI_TIME_ADJUST_DAYLIGHT;
+ if (tm.tm_isdst > 0)
+ time->daylight |= EFI_TIME_IN_DAYLIGHT;
+ time->timezone = EFI_UNSPECIFIED_TIMEZONE;
+
+ if (capabilities) {
+ /* Set reasonable dummy values */
+ capabilities->resolution = 1; /* 1 Hz */
+ capabilities->accuracy = 100000000; /* 100 ppm */
+ capabilities->sets_to_zero = false;
+ }
+out:
+ return EFI_EXIT(ret);
#else
- return EFI_DEVICE_ERROR;
+ EFI_ENTRY("%p %p", time, capabilities);
+ return EFI_EXIT(EFI_DEVICE_ERROR);
#endif
}
-/* Boards may override the helpers below to implement RTS functionality */
+/**
+ * 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)
return EFI_DEVICE_ERROR;
}
-efi_status_t __weak efi_get_time_init(void)
-{
- return EFI_SUCCESS;
-}
-
struct efi_runtime_detach_list_struct {
void *ptr;
void *patchto;
}, {
/* invalidate_*cache_all are gone */
.ptr = &efi_runtime_services.set_virtual_address_map,
- .patchto = &efi_invalid_parameter,
+ .patchto = &efi_unimplemented,
}, {
/* RTC accessors are gone */
.ptr = &efi_runtime_services.get_time,
debug("%s: Setting %p to %lx\n", __func__, p, newaddr);
*p = newaddr;
}
+
+ /* 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);
+ 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:
+ if (!efi_runtime_tobedetached(p))
+ printf("%s: Unknown relocation type %llx\n",
+ __func__, rel->info & R_MASK);
continue;
}
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_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 */
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: address 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;
* 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;
}
+/**
+ * efi_device_error() - replacement function, returns EFI_DEVICE_ERROR
+ *
+ * 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_DEVICE_ERROR
+ */
static efi_status_t __efi_runtime EFIAPI efi_device_error(void)
{
return EFI_DEVICE_ERROR;
}
+/**
+ * efi_invalid_parameter() - replacement function, returns EFI_INVALID_PARAMETER
+ *
+ * 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_INVALID_PARAMETER
+ */
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)
+ u64 *maximum_capsule_size,
+ u32 *reset_type)
{
return EFI_UNSUPPORTED;
}
+/**
+ * efi_query_variable_info() - get information about EFI variables
+ *
+ * This function implements the QueryVariableInfo() runtime service.
+ *
+ * See the Unified Extensible Firmware Interface (UEFI) specification for
+ * details.
+ *
+ * @attributes: bitmask to select variables to be
+ * queried
+ * @maximum_variable_storage_size: maximum size of storage area for the
+ * selected variable types
+ * @remaining_variable_storage_size: remaining size of storage are for the
+ * selected variable types
+ * @maximum_variable_size: maximum size of a variable of the
+ * selected type
+ * Returns: status code
+ */
efi_status_t __efi_runtime EFIAPI efi_query_variable_info(
u32 attributes,
u64 *maximum_variable_storage_size,
struct efi_runtime_services __efi_runtime_data efi_runtime_services = {
.hdr = {
.signature = EFI_RUNTIME_SERVICES_SIGNATURE,
- .revision = EFI_RUNTIME_SERVICES_REVISION,
- .headersize = sizeof(struct efi_table_hdr),
+ .revision = EFI_SPECIFICATION_VERSION,
+ .headersize = sizeof(struct efi_runtime_services),
},
.get_time = &efi_get_time_boottime,
.set_time = (void *)&efi_device_error,