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gop: Use ConOut to obtain GOP whenever possible

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This commit is contained in:
mintsuki 2022-11-14 07:29:29 +01:00
parent 970292460d
commit e924aa5f26
3 changed files with 45 additions and 62 deletions
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28
common/drivers/edid.c
View File

@ -1,5 +1,6 @@
#include <stdint.h>
#include <stddef.h>
#include <drivers/gop.h>
#include <drivers/edid.h>
#include <mm/pmm.h>
#include <lib/misc.h>
@ -50,32 +51,18 @@ success:
#include <efi.h>
struct edid_info_struct *get_edid_info(void) {
if (!gop_ready) {
goto fail;
}
struct edid_info_struct *buf = ext_mem_alloc(sizeof(struct edid_info_struct));
EFI_STATUS status;
EFI_HANDLE tmp_handles[1];
EFI_HANDLE *handles = tmp_handles;
UINTN handles_size = sizeof(EFI_HANDLE);
EFI_GUID gop_guid = EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID;
status = gBS->LocateHandle(ByProtocol, &gop_guid, NULL, &handles_size, handles);
if (status != EFI_SUCCESS && status != EFI_BUFFER_TOO_SMALL)
goto fail_n;
handles = ext_mem_alloc(handles_size);
status = gBS->LocateHandle(ByProtocol, &gop_guid, NULL, &handles_size, handles);
if (status)
goto fail;
EFI_EDID_ACTIVE_PROTOCOL *edid = NULL;
EFI_GUID edid_guid = EFI_EDID_ACTIVE_PROTOCOL_GUID;
status = gBS->HandleProtocol(handles[0], &edid_guid, (void **)&edid);
status = gBS->HandleProtocol(gop_handle, &edid_guid, (void **)&edid);
if (status)
goto fail;
@ -90,13 +77,10 @@ struct edid_info_struct *get_edid_info(void) {
goto success;
fail:
pmm_free(handles, handles_size);
fail_n:
printv("edid: Could not fetch EDID data.\n");
return NULL;
success:
pmm_free(handles, handles_size);
printv("edid: Success.\n");
return buf;
}

75
common/drivers/gop.c
View File

@ -37,7 +37,7 @@ static void linear_mask_to_mask_shift(
// Most of this code taken from https://wiki.osdev.org/GOP
static bool mode_to_fb_info(EFI_GRAPHICS_OUTPUT_PROTOCOL *gop, struct fb_info *ret, size_t mode) {
static bool mode_to_fb_info(struct fb_info *ret, size_t mode) {
EFI_STATUS status;
EFI_GRAPHICS_OUTPUT_MODE_INFORMATION *mode_info;
@ -98,11 +98,10 @@ static bool mode_to_fb_info(EFI_GRAPHICS_OUTPUT_PROTOCOL *gop, struct fb_info *r
bool gop_force_16 = false;
static bool try_mode(EFI_GRAPHICS_OUTPUT_PROTOCOL *gop,
struct fb_info *ret, size_t mode, uint64_t width, uint64_t height, int bpp) {
static bool try_mode(struct fb_info *ret, size_t mode, uint64_t width, uint64_t height, int bpp) {
EFI_STATUS status;
if (!mode_to_fb_info(gop, ret, mode)) {
if (!mode_to_fb_info(ret, mode)) {
return false;
}
@ -146,36 +145,8 @@ static bool try_mode(EFI_GRAPHICS_OUTPUT_PROTOCOL *gop,
}
struct fb_info *gop_get_mode_list(size_t *count) {
EFI_STATUS status;
EFI_HANDLE tmp_handles[1];
EFI_HANDLE *handles = tmp_handles;
UINTN handles_size = sizeof(EFI_HANDLE);
EFI_GUID gop_guid = EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID;
status = gBS->LocateHandle(ByProtocol, &gop_guid, NULL, &handles_size, handles);
if (status != EFI_SUCCESS && status != EFI_BUFFER_TOO_SMALL) {
return false;
}
handles = ext_mem_alloc(handles_size);
status = gBS->LocateHandle(ByProtocol, &gop_guid, NULL, &handles_size, handles);
if (status != EFI_SUCCESS) {
pmm_free(handles, handles_size);
return false;
}
EFI_HANDLE gop_handle = handles[0];
pmm_free(handles, handles_size);
EFI_GRAPHICS_OUTPUT_PROTOCOL *gop;
status = gBS->HandleProtocol(gop_handle, &gop_guid, (void **)&gop);
if (status != EFI_SUCCESS) {
return false;
if (!gop_ready) {
return NULL;
}
UINTN modes_count = gop->Mode->MaxMode;
@ -184,7 +155,7 @@ struct fb_info *gop_get_mode_list(size_t *count) {
size_t actual_count = 0;
for (size_t i = 0; i < modes_count; i++) {
if (mode_to_fb_info(gop, &ret[actual_count], i)) {
if (mode_to_fb_info(&ret[actual_count], i)) {
actual_count++;
}
}
@ -204,8 +175,14 @@ struct fb_info *gop_get_mode_list(size_t *count) {
static no_unwind size_t preset_mode = INVALID_PRESET_MODE;
static no_unwind EFI_GRAPHICS_OUTPUT_MODE_INFORMATION preset_mode_info;
bool gop_ready = false;
EFI_GRAPHICS_OUTPUT_PROTOCOL *gop;
EFI_HANDLE gop_handle;
bool init_gop(struct fb_info *ret,
uint64_t target_width, uint64_t target_height, uint16_t target_bpp) {
gop_ready = false;
ret->default_res = false;
EFI_STATUS status;
@ -216,6 +193,19 @@ bool init_gop(struct fb_info *ret,
UINTN handles_size = sizeof(EFI_HANDLE);
EFI_GUID gop_guid = EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID;
bool using_conout = true;
status = gBS->HandleProtocol(gST->ConsoleOutHandle, &gop_guid, (void **)&gop);
if (status == EFI_SUCCESS) {
print("gop: ConOut provides GOP. Using that...\n");
gop_handle = gST->ConsoleOutHandle;
goto conout_gop;
}
no_conout:
{
using_conout = false;
status = gBS->LocateHandle(ByProtocol, &gop_guid, NULL, &handles_size, handles);
if (status != EFI_SUCCESS && status != EFI_BUFFER_TOO_SMALL) {
@ -230,15 +220,17 @@ bool init_gop(struct fb_info *ret,
return false;
}
EFI_HANDLE gop_handle = handles[0];
gop_handle = handles[0];
pmm_free(handles, handles_size);
EFI_GRAPHICS_OUTPUT_PROTOCOL *gop;
status = gBS->HandleProtocol(gop_handle, &gop_guid, (void **)&gop);
if (status != EFI_SUCCESS) {
return false;
}
}
conout_gop:;
gop_ready = true;
EFI_GRAPHICS_OUTPUT_MODE_INFORMATION *mode_info;
UINTN mode_info_size;
@ -292,7 +284,7 @@ bool init_gop(struct fb_info *ret,
retry:
for (size_t i = 0; i < modes_count; i++) {
if (try_mode(gop, ret, i, target_width, target_height, target_bpp)) {
if (try_mode(ret, i, target_width, target_height, target_bpp)) {
gop_force_16 = false;
return true;
}
@ -323,7 +315,7 @@ fallback:
if (current_fallback == 1) {
current_fallback++;
if (try_mode(gop, ret, preset_mode, 0, 0, 0)) {
if (try_mode(ret, preset_mode, 0, 0, 0)) {
gop_force_16 = false;
return true;
}
@ -339,6 +331,9 @@ fallback:
}
gop_force_16 = false;
if (using_conout) {
goto no_conout;
}
return false;
}

4
common/drivers/gop.h
View File

@ -16,6 +16,10 @@ struct fb_info *gop_get_mode_list(size_t *count);
extern bool gop_force_16;
extern bool gop_ready;
extern EFI_GRAPHICS_OUTPUT_PROTOCOL *gop;
extern EFI_HANDLE gop_handle;
#endif
#endif