[src/netbsd-9]: src/sys/arch/i386/stand/efiboot Pull up following revision(s)...

[martin <martin%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/090999374af4
branches:  netbsd-9
changeset: 744691:090999374af4
user:      martin <martin%NetBSD.org@localhost>
date:      Mon Feb 10 18:57:06 2020 +0000

description:
Pull up following revision(s) (requested by jmcneill in ticket #685):

        sys/arch/i386/stand/efiboot/eficons.c: revision 1.8

Fix a few bugs related to the framebuffer:
  - If a GOP mode wasn't explicitly requested, the bootloader was passing
    fb info to the kernel even if the console was in text mode! This
    results in garbled console output on at least ThinkPad T420 and
    likely many others. If a mode isn't specified, default to 800x600.
  - The "gop" command was incorrectly parsing video modes in the form
    WxHxD as WxWxD.
  - Allow a short form WxH for the "gop" command to select any mode with
    the target dimensions.

diffstat:

 sys/arch/i386/stand/efiboot/eficons.c |  74 ++++++++++++++++++----------------
 1 files changed, 40 insertions(+), 34 deletions(-)

diffs (125 lines):

diff -r 2aa0feff522a -r 090999374af4 sys/arch/i386/stand/efiboot/eficons.c
--- a/sys/arch/i386/stand/efiboot/eficons.c     Mon Feb 10 18:54:14 2020 +0000
+++ b/sys/arch/i386/stand/efiboot/eficons.c     Mon Feb 10 18:57:06 2020 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: eficons.c,v 1.6.6.1 2019/09/17 19:32:00 martin Exp $   */
+/*     $NetBSD: eficons.c,v 1.6.6.2 2020/02/10 18:57:06 martin Exp $   */
 
 /*-
  * Copyright (c) 2016 Kimihiro Nonaka <nonaka%netbsd.org@localhost>
@@ -34,6 +34,10 @@
 #include "bootinfo.h"
 #include "vbe.h"
 
+#ifndef DEFAULT_GOP_MODE
+#define DEFAULT_GOP_MODE       "800x600"
+#endif
+
 extern struct x86_boot_params boot_params;
 
 struct btinfo_console btinfo_console;
@@ -71,6 +75,8 @@
 static int efi_com_status(int);
 static int efi_com_waitforinputevent(uint64_t);
 
+static int efi_find_gop_mode(char *);
+
 static int iodev;
 static int (*internal_getchar)(void) = efi_cons_getc;
 static int (*internal_putchar)(int) = efi_cons_putc;
@@ -415,46 +421,36 @@
        EFI_GRAPHICS_OUTPUT_MODE_INFORMATION *info;
        struct btinfo_framebuffer fb;
        INT32 bestmode = -1;
+       UINTN sz;
 
-       if (efi_gop == NULL) {
-               framebuffer_configure(NULL);
-               return;
-       }
+       if (efi_gop == NULL)
+               goto nofb;
 
        if (efi_gop_mode >= 0) {
                bestmode = efi_gop_mode;
        } else {
-#if 0
-               UINT64 res, bestres = 0;
-               UINTN sz;
-               UINT32 i;
-
-               /* XXX EDID? EFI_EDID_DISCOVERED_PROTOCOL */
-               for (i = 0; i < efi_gop->Mode->MaxMode; i++) {
-                       status = uefi_call_wrapper(efi_gop->QueryMode, 4,
-                           efi_gop, i, &sz, &info);
-                       if (EFI_ERROR(status))
-                               continue;
+               /* If a mode has not been selected, choose a default */
+               bestmode = efi_find_gop_mode(DEFAULT_GOP_MODE);
+       }
+       if (bestmode == -1)
+               goto nofb;
 
-                       res = (UINT64)info->HorizontalResolution *
-                           (UINT64)info->VerticalResolution *
-                           (UINT64)getdepth(info);
-                       if (res > bestres) {
-                               bestmode = i;
-                               bestres = res;
-                       }
-               }
-#endif
-       }
-       if (bestmode >= 0) {
-               status = uefi_call_wrapper(efi_gop->SetMode, 2, efi_gop,
-                   bestmode);
-               if (EFI_ERROR(status) || efi_gop->Mode->Mode != bestmode)
-                       printf("GOP setmode failed: %" PRIxMAX "\n",
-                           (uintmax_t)status);
+       status = uefi_call_wrapper(efi_gop->SetMode, 2, efi_gop,
+           bestmode);
+       if (EFI_ERROR(status) || efi_gop->Mode->Mode != bestmode) {
+               printf("GOP setmode failed: %" PRIxMAX "\n",
+                   (uintmax_t)status);
+               goto nofb;
        }
 
-       info = efi_gop->Mode->Info;
+       status = uefi_call_wrapper(efi_gop->QueryMode, 4,
+           efi_gop, bestmode, &sz, &info);
+       if (EFI_ERROR(status)) {
+               printf("GOP querymode failed: %" PRIxMAX "\n",
+                   (uintmax_t)status);
+               goto nofb;
+       }
+
        memset(&fb, 0, sizeof(fb));
        fb.physaddr = efi_gop->Mode->FrameBufferBase;
        fb.flags = 0;
@@ -499,6 +495,10 @@
        }
 
        framebuffer_configure(&fb);
+       return;
+
+nofb:
+       framebuffer_configure(NULL);
 }
 
 int
@@ -658,8 +658,14 @@
 
                snprintf(mode, sizeof(mode), "%lux%lux%u",
                    (long)info->HorizontalResolution,
+                   (long)info->VerticalResolution,
+                   depth);
+               if (strcmp(arg, mode) == 0)
+                       return i;
+
+               snprintf(mode, sizeof(mode), "%lux%lu",
                    (long)info->HorizontalResolution,
-                   depth);
+                   (long)info->VerticalResolution);
                if (strcmp(arg, mode) == 0)
                        return i;
        }