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author | Gerd Hoffmann <kraxel@redhat.com> | 2021-04-30 13:35:46 +0200 |
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committer | Gerd Hoffmann <kraxel@redhat.com> | 2021-05-10 13:55:28 +0200 |
commit | 48ecfbf12c1f51281aaabaf8e03494291a18862c (patch) | |
tree | 15840c5c2506cae5570d7fe3cf5731e85e79eb24 | |
parent | 17cdac0b51bc4ad7a68c3e5e0b1718729b74d512 (diff) | |
download | qemu-48ecfbf12c1f51281aaabaf8e03494291a18862c.zip qemu-48ecfbf12c1f51281aaabaf8e03494291a18862c.tar.gz qemu-48ecfbf12c1f51281aaabaf8e03494291a18862c.tar.bz2 |
modules: add have_vga
Introduce a symbol which can be used to prevent display modules which
need vga support being loaded into system emulators with CONFIG_VGA=n.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 20210430113547.1816178-1-kraxel@redhat.com
Message-Id: <20210430113547.1816178-16-kraxel@redhat.com>
-rw-r--r-- | hw/display/vga.c | 2 | ||||
-rw-r--r-- | include/hw/display/vga.h | 6 |
2 files changed, 8 insertions, 0 deletions
diff --git a/hw/display/vga.c b/hw/display/vga.c index 836ad50..28a90e3 100644 --- a/hw/display/vga.c +++ b/hw/display/vga.c @@ -39,6 +39,8 @@ //#define DEBUG_VGA_MEM //#define DEBUG_VGA_REG +bool have_vga = true; + /* 16 state changes per vertical frame @60 Hz */ #define VGA_TEXT_CURSOR_PERIOD_MS (1000 * 2 * 16 / 60) diff --git a/include/hw/display/vga.h b/include/hw/display/vga.h index ca0003d..5f7825e 100644 --- a/include/hw/display/vga.h +++ b/include/hw/display/vga.h @@ -11,6 +11,12 @@ #include "exec/hwaddr.h" +/* + * modules can reference this symbol to avoid being loaded + * into system emulators without vga support + */ +extern bool have_vga; + enum vga_retrace_method { VGA_RETRACE_DUMB, VGA_RETRACE_PRECISE |