[SeaBIOS] [PATCH v2 6/6] [hack] ignore sgabios, enable sercon instead

[Gerd Hoffmann]

Temporary, for testing convinience.
---
 src/optionroms.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/optionroms.c b/src/optionroms.c
index 432e8cb02a..6b959e51f5 100644
--- a/src/optionroms.c
+++ b/src/optionroms.c
@@ -24,6 +24,7 @@
 #include "tcgbios.h" // tpm_*

static int EnforceChecksum, S3ResumeVga, RunPCIroms;
+static int sgabios;

/****************************************************************
@@ -194,6 +195,12 @@ run_file_roms(const char *prefix, int isvga, u64 *sources)
         file = romfile_findprefix(prefix, file);
         if (!file)
             break;
+        if (strcmp(file->name, "vgaroms/sgabios.bin") == 0) {
+            dprintf(1, "sgabios.bin found -> ignoring, enabling sercon instead.\n");
+            dprintf(1, "hint: use '-machine graphics=no' instead of '-device sga'.\n");
+            sgabios++;
+            continue;
+        }
         struct rom_header *rom = deploy_romfile(file);
         if (rom) {
             setRomSource(sources, rom, (u32)file);
@@ -435,6 +442,8 @@ vgarom_setup(void)
     run_file_roms("vgaroms/", 1, NULL);
     rom_reserve(0);

+    if (sgabios)
+        iobase = PORT_SERIAL1;
     ret = romfile_loadint("etc/sercon-enable", 0);
     if (ret)
         iobase = PORT_SERIAL1;