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Date:      Sun, 30 Aug 2015 01:40:00 +0000 (UTC)
From:      Marcel Moolenaar <marcel@FreeBSD.org>
To:        src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org
Subject:   svn commit: r287299 - head/sys/boot/efi/loader/arch/amd64
Message-ID:  <201508300140.t7U1e0ej039049@repo.freebsd.org>
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Author: marcel
Date: Sun Aug 30 01:39:59 2015
New Revision: 287299
URL: https://svnweb.freebsd.org/changeset/base/287299

Log:
  Add a gop command to help diagnose VT efifb problems. The gop
  command has the following sub-commands:
    list		- list all possible modes (paged)
    get		- return the current mode
    set <mode>	- set the current mode to <mode>

Modified:
  head/sys/boot/efi/loader/arch/amd64/framebuffer.c

Modified: head/sys/boot/efi/loader/arch/amd64/framebuffer.c
==============================================================================
--- head/sys/boot/efi/loader/arch/amd64/framebuffer.c	Sat Aug 29 20:41:09 2015	(r287298)
+++ head/sys/boot/efi/loader/arch/amd64/framebuffer.c	Sun Aug 30 01:39:59 2015	(r287299)
@@ -29,6 +29,7 @@
 #include <sys/cdefs.h>
 __FBSDID("$FreeBSD$");
 
+#include <bootstrap.h>
 #include <stand.h>
 
 #include <efi.h>
@@ -83,3 +84,97 @@ efi_find_framebuffer(struct efi_fb *efif
 	}
 	return (0);
 }
+
+COMMAND_SET(gop, "gop", "graphics output protocol", command_gop);
+
+static void
+command_gop_display(u_int mode, EFI_GRAPHICS_OUTPUT_MODE_INFORMATION *info)
+{
+
+	printf("mode %u: %ux%u, stride=%u, color=", mode,
+	    info->HorizontalResolution, info->VerticalResolution,
+	    info->PixelsPerScanLine);
+	switch (info->PixelFormat) {
+	case PixelRedGreenBlueReserved8BitPerColor:
+		printf("32-bit (RGB)");
+		break;
+	case PixelBlueGreenRedReserved8BitPerColor:
+		printf("32-bit (BGR)");
+		break;
+	case PixelBitMask:
+		printf("mask (R=%x, G=%x, B=%x, X=%x)",
+		    info->PixelInformation.RedMask,
+		    info->PixelInformation.GreenMask,
+		    info->PixelInformation.BlueMask,
+		    info->PixelInformation.ReservedMask);
+		break;
+	case PixelBltOnly:
+		printf("unsupported (blt only)");
+		break;
+	default:
+		printf("unsupported (unknown)");
+		break;
+	}
+}
+
+static int
+command_gop(int argc, char *argv[])
+{
+	EFI_GRAPHICS_OUTPUT *gop;
+	EFI_STATUS status;
+	u_int mode;
+
+	status = BS->LocateProtocol(&gop_guid, NULL, (VOID **)&gop);
+	if (EFI_ERROR(status)) {
+		sprintf(command_errbuf, "%s: Graphics Output Protocol not "
+		    "present (error=%lu)", argv[0], status & ~EFI_ERROR_MASK);
+		return (CMD_ERROR);
+	}
+
+	if (argc == 1)
+		goto usage;
+
+	if (!strcmp(argv[1], "set")) {
+		char *cp;
+
+		if (argc != 3)
+			goto usage;
+		mode = strtol(argv[2], &cp, 0);
+		if (cp[0] != '\0') {
+			sprintf(command_errbuf, "mode is an integer");
+			return (CMD_ERROR);
+		}
+		status = gop->SetMode(gop, mode);
+		if (EFI_ERROR(status)) {
+			sprintf(command_errbuf, "%s: Unable to set mode to "
+			    "%u (error=%lu)", argv[0], mode,
+			    status & ~EFI_ERROR_MASK);
+			return (CMD_ERROR);
+		}
+	} else if (!strcmp(argv[1], "get")) {
+		command_gop_display(gop->Mode->Mode, gop->Mode->Info);
+		printf("\n    frame buffer: address=%jx, size=%lx\n",
+		    (uintmax_t)gop->Mode->FrameBufferBase,
+		    gop->Mode->FrameBufferSize);
+	} else if (!strcmp(argv[1], "list")) {
+		EFI_GRAPHICS_OUTPUT_MODE_INFORMATION *info;
+		UINTN infosz;
+
+		pager_open();
+		for (mode = 0; mode < gop->Mode->MaxMode; mode++) {
+			status = gop->QueryMode(gop, mode, &infosz, &info);
+			if (EFI_ERROR(status))
+				continue;
+			command_gop_display(mode, info);
+			if (pager_output("\n"))
+				break;
+		}
+		pager_close();
+	}
+	return (CMD_OK);
+
+ usage:
+	sprintf(command_errbuf, "usage: %s [list | get | set <mode>]",
+	    argv[0]);
+	return (CMD_ERROR);
+}

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