diff options
Diffstat (limited to 'arch/x86/boot/compressed/eboot.c')
| -rw-r--r-- | arch/x86/boot/compressed/eboot.c | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/arch/x86/boot/compressed/eboot.c b/arch/x86/boot/compressed/eboot.c index cc69e37548db2..ff01c8fc76f74 100644 --- a/arch/x86/boot/compressed/eboot.c +++ b/arch/x86/boot/compressed/eboot.c @@ -537,6 +537,69 @@ free_handle: efi_call_early(free_pool, pci_handle); } +static void retrieve_apple_device_properties(struct boot_params *boot_params) +{ + efi_guid_t guid = APPLE_PROPERTIES_PROTOCOL_GUID; + struct setup_data *data, *new; + efi_status_t status; + u32 size = 0; + void *p; + + status = efi_call_early(locate_protocol, &guid, NULL, &p); + if (status != EFI_SUCCESS) + return; + + if (efi_table_attr(apple_properties_protocol, version, p) != 0x10000) { + efi_printk(sys_table, "Unsupported properties proto version\n"); + return; + } + + efi_call_proto(apple_properties_protocol, get_all, p, NULL, &size); + if (!size) + return; + + do { + status = efi_call_early(allocate_pool, EFI_LOADER_DATA, + size + sizeof(struct setup_data), &new); + if (status != EFI_SUCCESS) { + efi_printk(sys_table, + "Failed to alloc mem for properties\n"); + return; + } + + status = efi_call_proto(apple_properties_protocol, get_all, p, + new->data, &size); + + if (status == EFI_BUFFER_TOO_SMALL) + efi_call_early(free_pool, new); + } while (status == EFI_BUFFER_TOO_SMALL); + + new->type = SETUP_APPLE_PROPERTIES; + new->len = size; + new->next = 0; + + data = (struct setup_data *)(unsigned long)boot_params->hdr.setup_data; + if (!data) + boot_params->hdr.setup_data = (unsigned long)new; + else { + while (data->next) + data = (struct setup_data *)(unsigned long)data->next; + data->next = (unsigned long)new; + } +} + +static void setup_quirks(struct boot_params *boot_params) +{ + efi_char16_t const apple[] = { 'A', 'p', 'p', 'l', 'e', 0 }; + efi_char16_t *fw_vendor = (efi_char16_t *)(unsigned long) + efi_table_attr(efi_system_table, fw_vendor, sys_table); + + if (!memcmp(fw_vendor, apple, sizeof(apple))) { + if (IS_ENABLED(CONFIG_APPLE_PROPERTIES)) + retrieve_apple_device_properties(boot_params); + } +} + static efi_status_t setup_uga32(void **uga_handle, unsigned long size, u32 *width, u32 *height) { @@ -1098,6 +1161,8 @@ struct boot_params *efi_main(struct efi_config *c, setup_efi_pci(boot_params); + setup_quirks(boot_params); + status = efi_call_early(allocate_pool, EFI_LOADER_DATA, sizeof(*gdt), (void **)&gdt); if (status != EFI_SUCCESS) { |