Differential D14769 Diff 40497 stand/efi/loader/framebuffer.c

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stand/efi/loader/framebuffer.c

Show First 20 Lines • Show All 419 Lines • ▼ Show 20 Lines	efifb_from_uga(struct efi_fb efifb, EFI_UGA_DRAW_PROTOCOL uga)
/*		/*
* We finalized on the stride, so recalculate the size of the		* We finalized on the stride, so recalculate the size of the
* frame buffer.		* frame buffer.
*/		*/
efifb->fb_size = efifb->fb_height * efifb->fb_stride * 4;		efifb->fb_size = efifb->fb_height * efifb->fb_stride * 4;
return (0);		return (0);
}		}

		static int
		efi_gop_best_mode(EFI_GRAPHICS_OUTPUT *gop)
		{
		struct efi_fb efifb;
		EFI_GRAPHICS_OUTPUT_MODE_INFORMATION *info;
		EFI_STATUS status;
		UINTN infosz;
		UINT32 best_mode, currdim, maxdim, mode;

		best_mode = maxdim = 0;
		for (mode = 0; mode < gop->Mode->MaxMode; mode++) {
		status = gop->QueryMode(gop, mode, &infosz, &info);
		if (EFI_ERROR(status))
		continue;
		efifb_from_gop(&efifb, gop->Mode, info);
		currdim = info->HorizontalResolution * info->VerticalResolution;
		if (currdim > maxdim) {
		impUnsubmitted Not Done Inline Actions There are complaints about it always picking the highest pixel count, since some are large and the font is tiny on them. imp: There are complaints about it always picking the highest pixel count, since some are large and…
		maxdim = currdim;
		best_mode = mode;
		}
		}
		return (best_mode);
		}

		static int
		efi_reset_gop(void)
		{
		EFI_GRAPHICS_OUTPUT *gop;
		EFI_STATUS status;
		UINT32 best_mode;

		status = BS->LocateProtocol(&gop_guid, NULL, (VOID **)&gop);
		if (EFI_ERROR(status))
		return (1);

		/*
		* We try to set the largest supported mode we can find. Depending on
		* how our console is setup, this will either match or be larger than
		* the current screen geometry, yielding a successful reset and putting
		* us into a consistent state before we exit the loader.
		*/
		best_mode = efi_gop_best_mode(gop);

		status = gop->SetMode(gop, best_mode);
		return (EFI_ERROR(status));
		}

		static int
		efi_reset_uga(void)
		{

		return (0);
		}

int		int
efi_find_framebuffer(struct efi_fb *efifb)		efi_reset_framebuffer()
{		{
		struct efi_fb efifb;
		efi_fb_providers provider;

		if (efi_find_framebuffer(&efifb, &provider) != 0)
		return (1);

		switch (provider) {
		case PROVIDER_GOP:
		return (efi_reset_gop());
		case PROVIDER_UGA:
		return (efi_reset_uga());
		default:
		return (1);
		}
		}

		int
		efi_find_framebuffer(struct efi_fb efifb, efi_fb_providers provider)
		{
EFI_GRAPHICS_OUTPUT *gop;		EFI_GRAPHICS_OUTPUT *gop;
EFI_UGA_DRAW_PROTOCOL *uga;		EFI_UGA_DRAW_PROTOCOL *uga;
EFI_STATUS status;		EFI_STATUS status;

status = BS->LocateProtocol(&gop_guid, NULL, (VOID **)&gop);		status = BS->LocateProtocol(&gop_guid, NULL, (VOID **)&gop);
if (status == EFI_SUCCESS)		if (status == EFI_SUCCESS) {
		if (provider != NULL)
		*provider = PROVIDER_GOP;
return (efifb_from_gop(efifb, gop->Mode, gop->Mode->Info));		return (efifb_from_gop(efifb, gop->Mode, gop->Mode->Info));
		}

status = BS->LocateProtocol(&uga_guid, NULL, (VOID **)&uga);		status = BS->LocateProtocol(&uga_guid, NULL, (VOID **)&uga);
if (status == EFI_SUCCESS)		if (status == EFI_SUCCESS) {
		if (provider != NULL)
		*provider = PROVIDER_UGA;
return (efifb_from_uga(efifb, uga));		return (efifb_from_uga(efifb, uga));
		}

return (1);		return (1);
}		}

static void		static void
print_efifb(int mode, struct efi_fb *efifb, int verbose)		print_efifb(int mode, struct efi_fb *efifb, int verbose)
{		{
u_int depth;		u_int depth;
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