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Breaking gfx mode code out into graphics.c

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This commit is contained in:
Justin C. Miller
2017-01-03 08:21:11 -08:00
parent eeaf27bbdf
commit 0260abecab
3 changed files with 60 additions and 38 deletions
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53
src/arch/x86_64/graphics.c Normal file
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@@ -0,0 +1,53 @@
#include <efi.h>
#include <efilib.h>
#include "utility.h"
EFI_STATUS
set_graphics_mode (EFI_SYSTEM_TABLE *SystemTable)
{
EFI_STATUS status;
Print(L"Setting console display mode... ");
EFI_GRAPHICS_OUTPUT_PROTOCOL *gfx_out_proto;
EFI_GUID gfx_out_guid = EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID;
status = SystemTable->BootServices->LocateProtocol(
&gfx_out_guid, NULL, (void**)&gfx_out_proto);
CHECK_EFI_STATUS_OR_RETURN(status, "LocateProtocol gfx");
const uint32_t modes = gfx_out_proto->Mode->MaxMode;
uint32_t res =
gfx_out_proto->Mode->Info->HorizontalResolution *
gfx_out_proto->Mode->Info->VerticalResolution;
uint32_t best = (uint32_t)-1;
for (uint32_t i = 0; i < modes; ++i) {
UINTN size = 0;
EFI_GRAPHICS_OUTPUT_MODE_INFORMATION *info = NULL;
status = gfx_out_proto->QueryMode(gfx_out_proto, i, &size, &info);
CHECK_EFI_STATUS_OR_RETURN(status, "QueryMode");
const uint32_t new_res =
info->HorizontalResolution *
info->VerticalResolution;
if (new_res > res) {
best = i;
res = new_res;
}
}
if (best != (uint32_t)-1) {
status = gfx_out_proto->SetMode(gfx_out_proto, best);
CHECK_EFI_STATUS_OR_RETURN(status, "SetMode");
Print(L"*");
}
Print(L"%ux%u\n",
gfx_out_proto->Mode->Info->HorizontalResolution,
gfx_out_proto->Mode->Info->VerticalResolution);
return status;
}

4
src/arch/x86_64/graphics.h Normal file
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@@ -0,0 +1,4 @@
#pragma once
#include <efi.h>
EFI_STATUS set_graphics_mode (EFI_SYSTEM_TABLE *SystemTable);

41
src/arch/x86_64/main.c
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@@ -1,6 +1,7 @@
#include <efi.h> #include <efi.h>
#include <efilib.h> #include <efilib.h>
#include "graphics.h"
#include "utility.h" #include "utility.h"
EFI_STATUS EFI_STATUS
@@ -12,44 +13,8 @@ efi_main (EFI_HANDLE ImageHandle, EFI_SYSTEM_TABLE *SystemTable)
Print(L"Popcorn OS " GIT_VERSION L" booting...\n"); Print(L"Popcorn OS " GIT_VERSION L" booting...\n");
Print(L"Setting console display mode... "); status = set_graphics_mode(SystemTable);
CHECK_EFI_STATUS_OR_RETURN(status, "set_graphics_mode");
EFI_GRAPHICS_OUTPUT_PROTOCOL *gfx_out_proto;
EFI_GUID gfx_out_guid = EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID;
status = SystemTable->BootServices->LocateProtocol(&gfx_out_guid, NULL, (void**)&gfx_out_proto);
CHECK_EFI_STATUS_OR_RETURN(status, "LocateProtocol gfx");
const uint32_t modes = gfx_out_proto->Mode->MaxMode;
uint32_t res =
gfx_out_proto->Mode->Info->HorizontalResolution *
gfx_out_proto->Mode->Info->VerticalResolution;
uint32_t best = (uint32_t)-1;
for (uint32_t i = 0; i < modes; ++i) {
UINTN size = 0;
EFI_GRAPHICS_OUTPUT_MODE_INFORMATION *info = NULL;
status = gfx_out_proto->QueryMode(gfx_out_proto, i, &size, &info);
CHECK_EFI_STATUS_OR_RETURN(status, "QueryMode");
const uint32_t new_res =
info->HorizontalResolution *
info->VerticalResolution;
if (new_res > res) {
best = i;
res = new_res;
}
}
if (best != (uint32_t)-1) {
status = gfx_out_proto->SetMode(gfx_out_proto, best);
CHECK_EFI_STATUS_OR_RETURN(status, "SetMode");
Print(L"*");
}
Print(L"%ux%u\n",
gfx_out_proto->Mode->Info->HorizontalResolution,
gfx_out_proto->Mode->Info->VerticalResolution);
Print(L" SystemTable: %x\n", SystemTable); Print(L" SystemTable: %x\n", SystemTable);
if (SystemTable) if (SystemTable)