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authorLinus Torvalds <torvalds@linux-foundation.org>2016-12-12 10:03:44 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2016-12-12 10:03:44 -0800
commit3940cf0b3d3c6c5817bb86f61a02277cd33f953a (patch)
tree119b7a593a3422ac4d6e2e1fa762a8f817f71a35 /arch
parent9ad1aeecdbbf002637f0466e8935a3248d1843ad (diff)
parent018edcfac4c3b140366ad51b0907f3becb5bb624 (diff)
Merge branch 'efi-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull EFI updates from Ingo Molnar: "The main changes in this development cycle were: - Implement EFI dev path parser and other changes to fully support thunderbolt devices on Apple Macbooks (Lukas Wunner) - Add RNG seeding via the EFI stub, on ARM/arm64 (Ard Biesheuvel) - Expose EFI framebuffer configuration to user-space, to improve tooling (Peter Jones) - Misc fixes and cleanups (Ivan Hu, Wei Yongjun, Yisheng Xie, Dan Carpenter, Roy Franz)" * 'efi-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: efi/libstub: Make efi_random_alloc() allocate below 4 GB on 32-bit thunderbolt: Compile on x86 only thunderbolt, efi: Fix Kconfig dependencies harder thunderbolt, efi: Fix Kconfig dependencies thunderbolt: Use Device ROM retrieved from EFI x86/efi: Retrieve and assign Apple device properties efi: Allow bitness-agnostic protocol calls efi: Add device path parser efi/arm*/libstub: Invoke EFI_RNG_PROTOCOL to seed the UEFI RNG table efi/libstub: Add random.c to ARM build efi: Add support for seeding the RNG from a UEFI config table MAINTAINERS: Add ARM and arm64 EFI specific files to EFI subsystem efi/libstub: Fix allocation size calculations efi/efivar_ssdt_load: Don't return success on allocation failure efifb: Show framebuffer layout as device attributes efi/efi_test: Use memdup_user() as a cleanup efi/efi_test: Fix uninitialized variable 'rv' efi/efi_test: Fix uninitialized variable 'datasize' efi/arm*: Fix efi_init() error handling efi: Remove unused include of <linux/version.h>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/include/asm/efi.h3
-rw-r--r--arch/arm64/include/asm/efi.h3
-rw-r--r--arch/x86/boot/compressed/eboot.c65
-rw-r--r--arch/x86/include/asm/efi.h16
-rw-r--r--arch/x86/include/uapi/asm/bootparam.h1
5 files changed, 83 insertions, 5 deletions
diff --git a/arch/arm/include/asm/efi.h b/arch/arm/include/asm/efi.h
index 766bf9b78160..0b06f5341b45 100644
--- a/arch/arm/include/asm/efi.h
+++ b/arch/arm/include/asm/efi.h
@@ -57,6 +57,9 @@ void efi_virtmap_unload(void);
#define __efi_call_early(f, ...) f(__VA_ARGS__)
#define efi_is_64bit() (false)
+#define efi_call_proto(protocol, f, instance, ...) \
+ ((protocol##_t *)instance)->f(instance, ##__VA_ARGS__)
+
struct screen_info *alloc_screen_info(efi_system_table_t *sys_table_arg);
void free_screen_info(efi_system_table_t *sys_table, struct screen_info *si);
diff --git a/arch/arm64/include/asm/efi.h b/arch/arm64/include/asm/efi.h
index a9e54aad15ef..771b3f0bc757 100644
--- a/arch/arm64/include/asm/efi.h
+++ b/arch/arm64/include/asm/efi.h
@@ -51,6 +51,9 @@ int efi_set_mapping_permissions(struct mm_struct *mm, efi_memory_desc_t *md);
#define __efi_call_early(f, ...) f(__VA_ARGS__)
#define efi_is_64bit() (true)
+#define efi_call_proto(protocol, f, instance, ...) \
+ ((protocol##_t *)instance)->f(instance, ##__VA_ARGS__)
+
#define alloc_screen_info(x...) &screen_info
#define free_screen_info(x...)
diff --git a/arch/x86/boot/compressed/eboot.c b/arch/x86/boot/compressed/eboot.c
index cc69e37548db..ff01c8fc76f7 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) {
diff --git a/arch/x86/include/asm/efi.h b/arch/x86/include/asm/efi.h
index 389d700b961e..e99675b9c861 100644
--- a/arch/x86/include/asm/efi.h
+++ b/arch/x86/include/asm/efi.h
@@ -210,12 +210,18 @@ static inline bool efi_is_64bit(void)
return __efi_early()->is64;
}
+#define efi_table_attr(table, attr, instance) \
+ (efi_is_64bit() ? \
+ ((table##_64_t *)(unsigned long)instance)->attr : \
+ ((table##_32_t *)(unsigned long)instance)->attr)
+
+#define efi_call_proto(protocol, f, instance, ...) \
+ __efi_early()->call(efi_table_attr(protocol, f, instance), \
+ instance, ##__VA_ARGS__)
+
#define efi_call_early(f, ...) \
- __efi_early()->call(efi_is_64bit() ? \
- ((efi_boot_services_64_t *)(unsigned long) \
- __efi_early()->boot_services)->f : \
- ((efi_boot_services_32_t *)(unsigned long) \
- __efi_early()->boot_services)->f, __VA_ARGS__)
+ __efi_early()->call(efi_table_attr(efi_boot_services, f, \
+ __efi_early()->boot_services), __VA_ARGS__)
#define __efi_call_early(f, ...) \
__efi_early()->call((unsigned long)f, __VA_ARGS__);
diff --git a/arch/x86/include/uapi/asm/bootparam.h b/arch/x86/include/uapi/asm/bootparam.h
index c18ce67495fa..b10bf319ed20 100644
--- a/arch/x86/include/uapi/asm/bootparam.h
+++ b/arch/x86/include/uapi/asm/bootparam.h
@@ -7,6 +7,7 @@
#define SETUP_DTB 2
#define SETUP_PCI 3
#define SETUP_EFI 4
+#define SETUP_APPLE_PROPERTIES 5
/* ram_size flags */
#define RAMDISK_IMAGE_START_MASK 0x07FF