+// SPDX-License-Identifier: GPL-2.0+
/*
* EFI application runtime services
*
* Copyright (c) 2016 Alexander Graf
- *
- * SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <dm.h>
#include <efi_loader.h>
#include <rtc.h>
-#include <asm/global_data.h>
/* For manual relocation support */
DECLARE_GLOBAL_DATA_PTR;
-static efi_status_t EFI_RUNTIME_TEXT EFIAPI efi_unimplemented(void);
-static efi_status_t EFI_RUNTIME_TEXT EFIAPI efi_device_error(void);
-static efi_status_t EFI_RUNTIME_TEXT EFIAPI efi_invalid_parameter(void);
+struct efi_runtime_mmio_list {
+ struct list_head link;
+ void **ptr;
+ u64 paddr;
+ u64 len;
+};
-#ifdef CONFIG_SYS_CACHELINE_SIZE
-#define EFI_CACHELINE_SIZE CONFIG_SYS_CACHELINE_SIZE
-#else
-/* Just use the greatest cache flush alignment requirement I'm aware of */
-#define EFI_CACHELINE_SIZE 128
-#endif
+/* This list contains all runtime available mmio regions */
+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);
#if defined(CONFIG_ARM64)
#define R_RELATIVE 1027
#elif defined(CONFIG_ARM)
#define R_RELATIVE 23
#define R_MASK 0xffULL
+#elif defined(CONFIG_X86)
+#include <asm/elf.h>
+#define R_RELATIVE R_386_RELATIVE
+#define R_MASK 0xffULL
+#elif defined(CONFIG_RISCV)
+#include <elf.h>
+#define R_RELATIVE R_RISCV_RELATIVE
+#define R_MASK 0xffULL
+#define IS_RELA 1
+
+struct dyn_sym {
+ ulong foo1;
+ ulong addr;
+ u32 foo2;
+ u32 foo3;
+};
+#ifdef CONFIG_CPU_RISCV_32
+#define R_ABSOLUTE R_RISCV_32
+#define SYM_INDEX 8
+#else
+#define R_ABSOLUTE R_RISCV_64
+#define SYM_INDEX 32
+#endif
#else
#error Need to add relocation awareness
#endif
* handle a good number of runtime callbacks
*/
-static void EFIAPI efi_reset_system(enum efi_reset_type reset_type,
- efi_status_t reset_status,
- unsigned long data_size, void *reset_data)
+static void EFIAPI efi_reset_system_boottime(
+ enum efi_reset_type reset_type,
+ efi_status_t reset_status,
+ unsigned long data_size, void *reset_data)
{
+ struct efi_event *evt;
+
EFI_ENTRY("%d %lx %lx %p", reset_type, reset_status, data_size,
reset_data);
+ /* Notify reset */
+ list_for_each_entry(evt, &efi_events, link) {
+ if (evt->group &&
+ !guidcmp(evt->group,
+ &efi_guid_event_group_reset_system)) {
+ efi_signal_event(evt, false);
+ break;
+ }
+ }
switch (reset_type) {
case EFI_RESET_COLD:
case EFI_RESET_WARM:
+ case EFI_RESET_PLATFORM_SPECIFIC:
do_reset(NULL, 0, 0, NULL);
break;
case EFI_RESET_SHUTDOWN:
break;
}
- EFI_EXIT(EFI_SUCCESS);
+ while (1) { }
}
-static efi_status_t EFIAPI efi_get_time(struct efi_time *time,
- struct efi_time_cap *capabilities)
+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;
#endif
}
+/* Boards may override the helpers below to implement RTS functionality */
+
+void __weak __efi_runtime EFIAPI efi_reset_system(
+ enum efi_reset_type reset_type,
+ efi_status_t reset_status,
+ unsigned long data_size, void *reset_data)
+{
+ /* Nothing we can do */
+ while (1) { }
+}
+
+efi_status_t __weak efi_reset_system_init(void)
+{
+ return EFI_SUCCESS;
+}
+
+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;
+}
+
+efi_status_t __weak efi_get_time_init(void)
+{
+ return EFI_SUCCESS;
+}
+
struct efi_runtime_detach_list_struct {
void *ptr;
void *patchto;
{
/* do_reset is gone */
.ptr = &efi_runtime_services.reset_system,
- .patchto = NULL,
+ .patchto = efi_reset_system,
}, {
/* invalidate_*cache_all are gone */
.ptr = &efi_runtime_services.set_virtual_address_map,
}, {
/* RTC accessors are gone */
.ptr = &efi_runtime_services.get_time,
- .patchto = &efi_device_error,
+ .patchto = &efi_get_time,
}, {
/* Clean up system table */
.ptr = &systab.con_in,
/* 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,
+ }
};
static bool efi_runtime_tobedetached(void *p)
p = (void*)((ulong)rel->offset - base) + gd->relocaddr;
- if ((rel->info & R_MASK) != R_RELATIVE) {
- 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:
#ifdef IS_RELA
newaddr = rel->addend + offset - CONFIG_SYS_TEXT_BASE;
#else
newaddr = *p - lastoff + offset;
#endif
+ break;
+#ifdef R_ABSOLUTE
+ case R_ABSOLUTE: {
+ ulong symidx = rel->info >> SYM_INDEX;
+ extern struct dyn_sym __dyn_sym_start[];
+ newaddr = __dyn_sym_start[symidx].addr + offset;
+ break;
+ }
+#endif
+ default:
+ continue;
+ }
/* Check if the relocation is inside bounds */
if (map && ((newaddr < map->virtual_start) ||
- newaddr > (map->virtual_start + (map->num_pages << 12)))) {
+ 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);
uint32_t descriptor_version,
struct efi_mem_desc *virtmap)
{
- ulong runtime_start = (ulong)&__efi_runtime_start & ~0xfffULL;
+ ulong runtime_start = (ulong)&__efi_runtime_start &
+ ~(ulong)EFI_PAGE_MASK;
int n = memory_map_size / descriptor_size;
int i;
EFI_ENTRY("%lx %lx %x %p", memory_map_size, descriptor_size,
descriptor_version, virtmap);
+ /* Rebind mmio pointers */
+ for (i = 0; i < n; i++) {
+ struct efi_mem_desc *map = (void*)virtmap +
+ (descriptor_size * i);
+ struct list_head *lhandle;
+ 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;
+
+ /* Adjust all mmio pointers in this region */
+ list_for_each(lhandle, &efi_runtime_mmio) {
+ struct efi_runtime_mmio_list *lmmio;
+
+ lmmio = list_entry(lhandle,
+ struct efi_runtime_mmio_list,
+ 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;
+ }
+ }
+ }
+
+ /* Move the actual runtime code over */
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);
+ ulong new_offset = map->virtual_start -
+ (runtime_start - gd->relocaddr);
efi_runtime_relocate(new_offset, map);
/* Once we're virtual, we can no longer handle
return EFI_EXIT(EFI_INVALID_PARAMETER);
}
+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;
+
+ retaddr = efi_add_memory_map(addr, pages, EFI_MMAP_IO, false);
+ if (retaddr != addr)
+ return EFI_OUT_OF_RESOURCES;
+
+ newmmio = calloc(1, sizeof(*newmmio));
+ if (!newmmio)
+ return EFI_OUT_OF_RESOURCES;
+ newmmio->ptr = mmio_ptr;
+ newmmio->paddr = *(uintptr_t *)mmio_ptr;
+ newmmio->len = len;
+ list_add_tail(&newmmio->link, &efi_runtime_mmio);
+
+ return EFI_SUCCESS;
+}
+
/*
* In the second stage, U-Boot has disappeared. To isolate our runtime code
* that at this point still exists from the rest, we put it into a special
* function or variable below this line.
*
* Please keep everything fully self-contained and annotated with
- * EFI_RUNTIME_TEXT and EFI_RUNTIME_DATA markers.
+ * __efi_runtime and __efi_runtime_data markers.
*/
/*
* address map calls.
*/
-static efi_status_t EFI_RUNTIME_TEXT EFIAPI efi_unimplemented(void)
+static efi_status_t __efi_runtime EFIAPI efi_unimplemented(void)
{
return EFI_UNSUPPORTED;
}
-static efi_status_t EFI_RUNTIME_TEXT EFIAPI efi_device_error(void)
+static efi_status_t __efi_runtime EFIAPI efi_device_error(void)
{
return EFI_DEVICE_ERROR;
}
-static efi_status_t EFI_RUNTIME_TEXT EFIAPI efi_invalid_parameter(void)
+static efi_status_t __efi_runtime EFIAPI efi_invalid_parameter(void)
{
return EFI_INVALID_PARAMETER;
}
-struct efi_runtime_services EFI_RUNTIME_DATA efi_runtime_services = {
+efi_status_t __efi_runtime EFIAPI efi_update_capsule(
+ struct efi_capsule_header **capsule_header_array,
+ efi_uintn_t capsule_count,
+ u64 scatter_gather_list)
+{
+ return EFI_UNSUPPORTED;
+}
+
+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)
+{
+ return EFI_UNSUPPORTED;
+}
+
+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),
},
- .get_time = &efi_get_time,
+ .get_time = &efi_get_time_boottime,
.set_time = (void *)&efi_device_error,
.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,
- .get_variable = (void *)&efi_device_error,
- .get_next_variable = (void *)&efi_device_error,
- .set_variable = (void *)&efi_device_error,
+ .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,
- .reset_system = &efi_reset_system,
+ .reset_system = &efi_reset_system_boottime,
+ .update_capsule = efi_update_capsule,
+ .query_capsule_caps = efi_query_capsule_caps,
+ .query_variable_info = efi_query_variable_info,
};
projects / oweals / u-boot.git / blobdiff