Changeset dbab2a4

Timestamp:

09/22/2022 04:34:27 AM (19 months ago)

Author:

Xi Ruoyao <xry111@…>

Branches:

11.3, 11.3-rc1, 12.0, 12.0-rc1, 12.1, 12.1-rc1, bdubbs/gcc13, multilib, renodr/libudev-from-systemd, trunk, xry111/arm64, xry111/arm64-12.0, xry111/clfs-ng, xry111/loongarch, xry111/loongarch-12.0, xry111/loongarch-12.1, xry111/mips64el, xry111/pip3, xry111/rust-wip-20221008, xry111/update-glibc

Children:

01ecba7

Parents:

6612f54

git-author:

Xi Ruoyao <xry111@…> (09/22/2022 04:34:07 AM)

git-committer:

Xi Ruoyao <xry111@…> (09/22/2022 04:34:27 AM)

Message:

kernel: add CONFIG_FRAMEBUFFER_CONSOLE, and mention CONFIG_DRM_FBDEV_EMULATION

Is there anyone using a blind system with serial console now? :)

File:

• chapter10/kernel.xml (modified) (3 diffs)

chapter10/kernel.xml

@@ -118 +118 @@
   Graphics support --->
    Frame buffer Devices --->
-      [*] Support for frame buffer devices ----
+      <*> Support for frame buffer devices --->
+   Console display driver support --->
+      [*] Framebuffer Console support [CONFIG_FRAMEBUFFER_CONSOLE]
   Generic Driver Options  --->
    [ ] Support for uevent helper [CONFIG_UEVENT_HELPER]
@@ -157 +159 @@
    Frame buffer Devices --->
       <*> Support for frame buffer devices --->
+   Console display driver support --->
+      [*] Framebuffer Console support [CONFIG_FRAMEBUFFER_CONSOLE]
 File systems  --->
    [*] Inotify support for userspace [CONFIG_INOTIFY_USER]
@@ -267 +271 @@
           upon switching to root filesystem just before starting
           init.</para>
+        </listitem>
+      </varlistentry>
+
+      <varlistentry>
+        <term><parameter>Framebuffer Console support</parameter></term>
+        <listitem>
+          <para>This is needed to display the Linux console on a frame
+          buffer device.  To allow the kernel to print debug messages at an
+          early boot stage, it shouldn't be built as a kernel module
+          unless an initramfs will be used. And, if
+          <option>CONFIG_DRM</option> (Direct Rendering Manager) is enabled,
+          it's likely <option>CONFIG_DRM_FBDEV_EMULATION</option> (Enable
+          legacy fbdev support for your modesetting driver) should be
+          enabled as well.</para>
         </listitem>
       </varlistentry>