diff options
| -rw-r--r-- | drivers/firmware/efi/libstub/efi-stub.c | 2 | ||||
| -rw-r--r-- | drivers/firmware/efi/libstub/efistub.h | 31 | ||||
| -rw-r--r-- | drivers/firmware/efi/libstub/gop.c | 36 | ||||
| -rw-r--r-- | drivers/firmware/efi/libstub/x86-stub.c | 2 | ||||
| -rw-r--r-- | include/linux/efi.h | 2 |
5 files changed, 69 insertions, 4 deletions
diff --git a/drivers/firmware/efi/libstub/efi-stub.c b/drivers/firmware/efi/libstub/efi-stub.c index 874f63b4a383..9cb814c5ba1b 100644 --- a/drivers/firmware/efi/libstub/efi-stub.c +++ b/drivers/firmware/efi/libstub/efi-stub.c @@ -56,7 +56,7 @@ static struct screen_info *setup_graphics(void) { struct screen_info *si, tmp = {}; - if (efi_setup_gop(&tmp) != EFI_SUCCESS) + if (efi_setup_graphics(&tmp, NULL) != EFI_SUCCESS) return NULL; si = alloc_screen_info(); diff --git a/drivers/firmware/efi/libstub/efistub.h b/drivers/firmware/efi/libstub/efistub.h index f5ba032863a9..b2fb0c3fa721 100644 --- a/drivers/firmware/efi/libstub/efistub.h +++ b/drivers/firmware/efi/libstub/efistub.h @@ -34,6 +34,9 @@ #define EFI_ALLOC_LIMIT ULONG_MAX #endif +struct edid_info; +struct screen_info; + extern bool efi_no5lvl; extern bool efi_nochunk; extern bool efi_nokaslr; @@ -578,6 +581,32 @@ union efi_graphics_output_protocol { } mixed_mode; }; +typedef union efi_edid_discovered_protocol efi_edid_discovered_protocol_t; + +union efi_edid_discovered_protocol { + struct { + u32 size_of_edid; + u8 *edid; + }; + struct { + u32 size_of_edid; + u32 edid; + } mixed_mode; +}; + +typedef union efi_edid_active_protocol efi_edid_active_protocol_t; + +union efi_edid_active_protocol { + struct { + u32 size_of_edid; + u8 *edid; + }; + struct { + u32 size_of_edid; + u32 edid; + } mixed_mode; +}; + typedef union { struct { u32 revision; @@ -1085,7 +1114,7 @@ efi_status_t efi_parse_options(char const *cmdline); void efi_parse_option_graphics(char *option); -efi_status_t efi_setup_gop(struct screen_info *si); +efi_status_t efi_setup_graphics(struct screen_info *si, struct edid_info *edid); efi_status_t handle_cmdline_files(efi_loaded_image_t *image, const efi_char16_t *optstr, diff --git a/drivers/firmware/efi/libstub/gop.c b/drivers/firmware/efi/libstub/gop.c index 02459ef0f18c..72d74436a7a4 100644 --- a/drivers/firmware/efi/libstub/gop.c +++ b/drivers/firmware/efi/libstub/gop.c @@ -12,6 +12,7 @@ #include <linux/string.h> #include <asm/efi.h> #include <asm/setup.h> +#include <video/edid.h> #include "efistub.h" @@ -413,6 +414,14 @@ static void setup_screen_info(struct screen_info *si, const efi_graphics_output_ si->capabilities |= VIDEO_CAPABILITY_SKIP_QUIRKS; } +static void setup_edid_info(struct edid_info *edid, u32 gop_size_of_edid, u8 *gop_edid) +{ + if (!gop_edid || gop_size_of_edid < 128) + memset(edid->dummy, 0, sizeof(edid->dummy)); + else + memcpy(edid->dummy, gop_edid, min(gop_size_of_edid, sizeof(edid->dummy))); +} + static efi_handle_t find_handle_with_primary_gop(unsigned long num, const efi_handle_t handles[], efi_graphics_output_protocol_t **found_gop) { @@ -469,7 +478,7 @@ static efi_handle_t find_handle_with_primary_gop(unsigned long num, const efi_ha return first_gop_handle; } -efi_status_t efi_setup_gop(struct screen_info *si) +efi_status_t efi_setup_graphics(struct screen_info *si, struct edid_info *edid) { efi_handle_t *handles __free(efi_pool) = NULL; efi_handle_t handle; @@ -494,5 +503,30 @@ efi_status_t efi_setup_gop(struct screen_info *si) if (si) setup_screen_info(si, gop); + /* Display EDID for primary GOP */ + if (edid) { + efi_edid_discovered_protocol_t *discovered_edid; + efi_edid_active_protocol_t *active_edid; + u32 gop_size_of_edid = 0; + u8 *gop_edid = NULL; + + status = efi_bs_call(handle_protocol, handle, &EFI_EDID_ACTIVE_PROTOCOL_GUID, + (void **)&active_edid); + if (status == EFI_SUCCESS) { + gop_size_of_edid = active_edid->size_of_edid; + gop_edid = active_edid->edid; + } else { + status = efi_bs_call(handle_protocol, handle, + &EFI_EDID_DISCOVERED_PROTOCOL_GUID, + (void **)&discovered_edid); + if (status == EFI_SUCCESS) { + gop_size_of_edid = discovered_edid->size_of_edid; + gop_edid = discovered_edid->edid; + } + } + + setup_edid_info(edid, gop_size_of_edid, gop_edid); + } + return EFI_SUCCESS; } diff --git a/drivers/firmware/efi/libstub/x86-stub.c b/drivers/firmware/efi/libstub/x86-stub.c index dd9e19c31dd7..6e51cca72684 100644 --- a/drivers/firmware/efi/libstub/x86-stub.c +++ b/drivers/firmware/efi/libstub/x86-stub.c @@ -488,7 +488,7 @@ static void setup_graphics(struct boot_params *boot_params) { struct screen_info *si = memset(&boot_params->screen_info, 0, sizeof(*si)); - efi_setup_gop(si); + efi_setup_graphics(si, NULL); } static void __noreturn efi_exit(efi_handle_t handle, efi_status_t status) diff --git a/include/linux/efi.h b/include/linux/efi.h index 60e994096e20..a01f3fe20dab 100644 --- a/include/linux/efi.h +++ b/include/linux/efi.h @@ -373,6 +373,8 @@ void efi_native_runtime_setup(void); #define EFI_DEVICE_PATH_TO_TEXT_PROTOCOL_GUID EFI_GUID(0x8b843e20, 0x8132, 0x4852, 0x90, 0xcc, 0x55, 0x1a, 0x4e, 0x4a, 0x7f, 0x1c) #define EFI_DEVICE_PATH_FROM_TEXT_PROTOCOL_GUID EFI_GUID(0x05c99a21, 0xc70f, 0x4ad2, 0x8a, 0x5f, 0x35, 0xdf, 0x33, 0x43, 0xf5, 0x1e) #define EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID EFI_GUID(0x9042a9de, 0x23dc, 0x4a38, 0x96, 0xfb, 0x7a, 0xde, 0xd0, 0x80, 0x51, 0x6a) +#define EFI_EDID_DISCOVERED_PROTOCOL_GUID EFI_GUID(0x1c0c34f6, 0xd380, 0x41fa, 0xa0, 0x49, 0x8a, 0xd0, 0x6c, 0x1a, 0x66, 0xaa) +#define EFI_EDID_ACTIVE_PROTOCOL_GUID EFI_GUID(0xbd8c1056, 0x9f36, 0x44ec, 0x92, 0xa8, 0xa6, 0x33, 0x7f, 0x81, 0x79, 0x86) #define EFI_PCI_IO_PROTOCOL_GUID EFI_GUID(0x4cf5b200, 0x68b8, 0x4ca5, 0x9e, 0xec, 0xb2, 0x3e, 0x3f, 0x50, 0x02, 0x9a) #define EFI_FILE_INFO_ID EFI_GUID(0x09576e92, 0x6d3f, 0x11d2, 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b) #define EFI_SYSTEM_RESOURCE_TABLE_GUID EFI_GUID(0xb122a263, 0x3661, 0x4f68, 0x99, 0x29, 0x78, 0xf8, 0xb0, 0xd6, 0x21, 0x80) |