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authorIngo Molnar <mingo@kernel.org>2015-10-14 16:05:40 +0200
committerIngo Molnar <mingo@kernel.org>2015-10-14 16:51:34 +0200
commit790a2ee2427852cff50993c98f15ed88511e9af0 (patch)
tree0540a9d244acc1fcf962098530647afa993e5607 /arch/x86/boot
parentc7d77a7980e434c3af17de19e3348157f9b9ccce (diff)
parent0f96a99dab366333439e110d6ad253bc7c557c09 (diff)
Merge tag 'efi-next' of git://git.kernel.org/pub/scm/linux/kernel/git/mfleming/efi into core/efi
Pull v4.4 EFI updates from Matt Fleming: - Make the EFI System Resource Table (ESRT) driver explicitly non-modular by ripping out the module_* code since Kconfig doesn't allow it to be built as a module anyway. (Paul Gortmaker) - Make the x86 efi=debug kernel parameter, which enables EFI debug code and output, generic and usable by arm64. (Leif Lindholm) - Add support to the x86 EFI boot stub for 64-bit Graphics Output Protocol frame buffer addresses. (Matt Fleming) - Detect when the UEFI v2.5 EFI_PROPERTIES_TABLE feature is enabled in the firmware and set an efi.flags bit so the kernel knows when it can apply more strict runtime mapping attributes - Ard Biesheuvel - Auto-load the efi-pstore module on EFI systems, just like we currently do for the efivars module. (Ben Hutchings) - Add "efi_fake_mem" kernel parameter which allows the system's EFI memory map to be updated with additional attributes for specific memory ranges. This is useful for testing the kernel code that handles the EFI_MEMORY_MORE_RELIABLE memmap bit even if your firmware doesn't include support. (Taku Izumi) Note: there is a semantic conflict between the following two commits: 8a53554e12e9 ("x86/efi: Fix multiple GOP device support") ae2ee627dc87 ("efifb: Add support for 64-bit frame buffer addresses") I fixed up the interaction in the merge commit, changing the type of current_fb_base from u32 to u64. Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/boot')
-rw-r--r--arch/x86/boot/compressed/eboot.c28
1 files changed, 22 insertions, 6 deletions
diff --git a/arch/x86/boot/compressed/eboot.c b/arch/x86/boot/compressed/eboot.c
index db51c1f27446..583d539a4197 100644
--- a/arch/x86/boot/compressed/eboot.c
+++ b/arch/x86/boot/compressed/eboot.c
@@ -624,7 +624,7 @@ setup_pixel_info(struct screen_info *si, u32 pixels_per_scan_line,
static efi_status_t
__gop_query32(struct efi_graphics_output_protocol_32 *gop32,
struct efi_graphics_output_mode_info **info,
- unsigned long *size, u32 *fb_base)
+ unsigned long *size, u64 *fb_base)
{
struct efi_graphics_output_protocol_mode_32 *mode;
efi_status_t status;
@@ -650,7 +650,8 @@ setup_gop32(struct screen_info *si, efi_guid_t *proto,
unsigned long nr_gops;
u16 width, height;
u32 pixels_per_scan_line;
- u32 fb_base;
+ u32 ext_lfb_base;
+ u64 fb_base;
struct efi_pixel_bitmask pixel_info;
int pixel_format;
efi_status_t status;
@@ -667,7 +668,7 @@ setup_gop32(struct screen_info *si, efi_guid_t *proto,
bool conout_found = false;
void *dummy = NULL;
u32 h = handles[i];
- u32 current_fb_base;
+ u64 current_fb_base;
status = efi_call_early(handle_protocol, h,
proto, (void **)&gop32);
@@ -715,6 +716,13 @@ setup_gop32(struct screen_info *si, efi_guid_t *proto,
si->lfb_width = width;
si->lfb_height = height;
si->lfb_base = fb_base;
+
+ ext_lfb_base = (u64)(unsigned long)fb_base >> 32;
+ if (ext_lfb_base) {
+ si->capabilities |= VIDEO_CAPABILITY_64BIT_BASE;
+ si->ext_lfb_base = ext_lfb_base;
+ }
+
si->pages = 1;
setup_pixel_info(si, pixels_per_scan_line, pixel_info, pixel_format);
@@ -729,7 +737,7 @@ out:
static efi_status_t
__gop_query64(struct efi_graphics_output_protocol_64 *gop64,
struct efi_graphics_output_mode_info **info,
- unsigned long *size, u32 *fb_base)
+ unsigned long *size, u64 *fb_base)
{
struct efi_graphics_output_protocol_mode_64 *mode;
efi_status_t status;
@@ -755,7 +763,8 @@ setup_gop64(struct screen_info *si, efi_guid_t *proto,
unsigned long nr_gops;
u16 width, height;
u32 pixels_per_scan_line;
- u32 fb_base;
+ u32 ext_lfb_base;
+ u64 fb_base;
struct efi_pixel_bitmask pixel_info;
int pixel_format;
efi_status_t status;
@@ -772,7 +781,7 @@ setup_gop64(struct screen_info *si, efi_guid_t *proto,
bool conout_found = false;
void *dummy = NULL;
u64 h = handles[i];
- u32 current_fb_base;
+ u64 current_fb_base;
status = efi_call_early(handle_protocol, h,
proto, (void **)&gop64);
@@ -820,6 +829,13 @@ setup_gop64(struct screen_info *si, efi_guid_t *proto,
si->lfb_width = width;
si->lfb_height = height;
si->lfb_base = fb_base;
+
+ ext_lfb_base = (u64)(unsigned long)fb_base >> 32;
+ if (ext_lfb_base) {
+ si->capabilities |= VIDEO_CAPABILITY_64BIT_BASE;
+ si->ext_lfb_base = ext_lfb_base;
+ }
+
si->pages = 1;
setup_pixel_info(si, pixels_per_scan_line, pixel_info, pixel_format);