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authorLukas Wunner <lukas@wunner.de>2017-01-31 14:21:33 +0100
committerIngo Molnar <mingo@kernel.org>2017-02-01 08:45:42 +0100
commit2bd79f30eea1a7c3082c930a91370bb68435b86d (patch)
tree7899bb411403768836d29e3f714ad44254569546 /drivers/firmware/efi/libstub
parentx86/efi: Always map the first physical page into the EFI pagetables (diff)
downloadlinux-2bd79f30eea1a7c3082c930a91370bb68435b86d.tar.xz
linux-2bd79f30eea1a7c3082c930a91370bb68435b86d.zip
efi: Deduplicate efi_file_size() / _read() / _close()
There's one ARM, one x86_32 and one x86_64 version which can be folded into a single shared version by masking their differences with the shiny new efi_call_proto() macro. No functional change intended. Signed-off-by: Lukas Wunner <lukas@wunner.de> Signed-off-by: Matt Fleming <matt@codeblueprint.co.uk> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-efi@vger.kernel.org Link: http://lkml.kernel.org/r/1485868902-20401-2-git-send-email-ard.biesheuvel@linaro.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'drivers/firmware/efi/libstub')
-rw-r--r--drivers/firmware/efi/libstub/arm-stub.c69
-rw-r--r--drivers/firmware/efi/libstub/efi-stub-helper.c63
-rw-r--r--drivers/firmware/efi/libstub/efistub.h8
3 files changed, 63 insertions, 77 deletions
diff --git a/drivers/firmware/efi/libstub/arm-stub.c b/drivers/firmware/efi/libstub/arm-stub.c
index b4f7d78f9e8b..6fca48c9e054 100644
--- a/drivers/firmware/efi/libstub/arm-stub.c
+++ b/drivers/firmware/efi/libstub/arm-stub.c
@@ -91,75 +91,6 @@ efi_status_t efi_open_volume(efi_system_table_t *sys_table_arg,
return status;
}
-efi_status_t efi_file_close(void *handle)
-{
- efi_file_handle_t *fh = handle;
-
- return fh->close(handle);
-}
-
-efi_status_t
-efi_file_read(void *handle, unsigned long *size, void *addr)
-{
- efi_file_handle_t *fh = handle;
-
- return fh->read(handle, size, addr);
-}
-
-
-efi_status_t
-efi_file_size(efi_system_table_t *sys_table_arg, void *__fh,
- efi_char16_t *filename_16, void **handle, u64 *file_sz)
-{
- efi_file_handle_t *h, *fh = __fh;
- efi_file_info_t *info;
- efi_status_t status;
- efi_guid_t info_guid = EFI_FILE_INFO_ID;
- unsigned long info_sz;
-
- status = fh->open(fh, &h, filename_16, EFI_FILE_MODE_READ, (u64)0);
- if (status != EFI_SUCCESS) {
- efi_printk(sys_table_arg, "Failed to open file: ");
- efi_char16_printk(sys_table_arg, filename_16);
- efi_printk(sys_table_arg, "\n");
- return status;
- }
-
- *handle = h;
-
- info_sz = 0;
- status = h->get_info(h, &info_guid, &info_sz, NULL);
- if (status != EFI_BUFFER_TOO_SMALL) {
- efi_printk(sys_table_arg, "Failed to get file info size\n");
- return status;
- }
-
-grow:
- status = sys_table_arg->boottime->allocate_pool(EFI_LOADER_DATA,
- info_sz, (void **)&info);
- if (status != EFI_SUCCESS) {
- efi_printk(sys_table_arg, "Failed to alloc mem for file info\n");
- return status;
- }
-
- status = h->get_info(h, &info_guid, &info_sz,
- info);
- if (status == EFI_BUFFER_TOO_SMALL) {
- sys_table_arg->boottime->free_pool(info);
- goto grow;
- }
-
- *file_sz = info->file_size;
- sys_table_arg->boottime->free_pool(info);
-
- if (status != EFI_SUCCESS)
- efi_printk(sys_table_arg, "Failed to get initrd info\n");
-
- return status;
-}
-
-
-
void efi_char16_printk(efi_system_table_t *sys_table_arg,
efi_char16_t *str)
{
diff --git a/drivers/firmware/efi/libstub/efi-stub-helper.c b/drivers/firmware/efi/libstub/efi-stub-helper.c
index 757badc1debb..6ee9164251a9 100644
--- a/drivers/firmware/efi/libstub/efi-stub-helper.c
+++ b/drivers/firmware/efi/libstub/efi-stub-helper.c
@@ -338,6 +338,69 @@ void efi_free(efi_system_table_t *sys_table_arg, unsigned long size,
efi_call_early(free_pages, addr, nr_pages);
}
+static efi_status_t efi_file_size(efi_system_table_t *sys_table_arg, void *__fh,
+ efi_char16_t *filename_16, void **handle,
+ u64 *file_sz)
+{
+ efi_file_handle_t *h, *fh = __fh;
+ efi_file_info_t *info;
+ efi_status_t status;
+ efi_guid_t info_guid = EFI_FILE_INFO_ID;
+ unsigned long info_sz;
+
+ status = efi_call_proto(efi_file_handle, open, fh, &h, filename_16,
+ EFI_FILE_MODE_READ, (u64)0);
+ if (status != EFI_SUCCESS) {
+ efi_printk(sys_table_arg, "Failed to open file: ");
+ efi_char16_printk(sys_table_arg, filename_16);
+ efi_printk(sys_table_arg, "\n");
+ return status;
+ }
+
+ *handle = h;
+
+ info_sz = 0;
+ status = efi_call_proto(efi_file_handle, get_info, h, &info_guid,
+ &info_sz, NULL);
+ if (status != EFI_BUFFER_TOO_SMALL) {
+ efi_printk(sys_table_arg, "Failed to get file info size\n");
+ return status;
+ }
+
+grow:
+ status = efi_call_early(allocate_pool, EFI_LOADER_DATA,
+ info_sz, (void **)&info);
+ if (status != EFI_SUCCESS) {
+ efi_printk(sys_table_arg, "Failed to alloc mem for file info\n");
+ return status;
+ }
+
+ status = efi_call_proto(efi_file_handle, get_info, h, &info_guid,
+ &info_sz, info);
+ if (status == EFI_BUFFER_TOO_SMALL) {
+ efi_call_early(free_pool, info);
+ goto grow;
+ }
+
+ *file_sz = info->file_size;
+ efi_call_early(free_pool, info);
+
+ if (status != EFI_SUCCESS)
+ efi_printk(sys_table_arg, "Failed to get initrd info\n");
+
+ return status;
+}
+
+static efi_status_t efi_file_read(void *handle, unsigned long *size, void *addr)
+{
+ return efi_call_proto(efi_file_handle, read, handle, size, addr);
+}
+
+static efi_status_t efi_file_close(void *handle)
+{
+ return efi_call_proto(efi_file_handle, close, handle);
+}
+
/*
* Parse the ASCII string 'cmdline' for EFI options, denoted by the efi=
* option, e.g. efi=nochunk.
diff --git a/drivers/firmware/efi/libstub/efistub.h b/drivers/firmware/efi/libstub/efistub.h
index 0e2a96b12cb3..71c4d0e3c4ed 100644
--- a/drivers/firmware/efi/libstub/efistub.h
+++ b/drivers/firmware/efi/libstub/efistub.h
@@ -29,14 +29,6 @@ void efi_char16_printk(efi_system_table_t *, efi_char16_t *);
efi_status_t efi_open_volume(efi_system_table_t *sys_table_arg, void *__image,
void **__fh);
-efi_status_t efi_file_size(efi_system_table_t *sys_table_arg, void *__fh,
- efi_char16_t *filename_16, void **handle,
- u64 *file_sz);
-
-efi_status_t efi_file_read(void *handle, unsigned long *size, void *addr);
-
-efi_status_t efi_file_close(void *handle);
-
unsigned long get_dram_base(efi_system_table_t *sys_table_arg);
efi_status_t allocate_new_fdt_and_exit_boot(efi_system_table_t *sys_table,