doc: Update documentation for cros-2021.04 release

With the new 2021.04 we have a new version of Chromium OS boot, which
supports sandbox, coral and coral-on-coreboot. Add documentation for
this.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

diff --git a/doc/chromium/run_vboot.rst b/doc/chromium/run_vboot.rst
index 41b4f63..a9e4408 100644 (file)
--- a/doc/chromium/run_vboot.rst
+++ b/doc/chromium/run_vboot.rst
@@ -6,11 +6,15 @@
 Running U-Boot with Chromium OS verified boot
 =============================================
 
+Note: Once you use the source below you can obtain extra documentation with
+'make htmldocs'. See the 'Internal Documentation' link, under
+'Chromium OS-specific doc'.
+
 To obtain::
 
    git clone https://github.com/sjg20/u-boot.git
    cd u-boot
-   git checkout cros-master
+   git checkout cros-2021.04
 
    cd ..
    git clone https://chromium.googlesource.com/chromiumos/platform/vboot_reference
@@ -169,7 +173,8 @@ detect problems that affect the flow or particular vboot features.
 U-Boot without Chromium OS verified boot
 ----------------------------------------
 
-The following script can be used to boot a Chrome OS image on coral::
+The following script can be used to boot a Chrome OS image on coral. It is
+defined as the boot command in mainline::
 
    # Read the image header and obtain the address of the kernel
    # The offset 4f0 is defined by verified boot and may change for other
@@ -195,10 +200,4 @@ The following script can be used to boot a Chrome OS image on coral::
    zboot go
 
 
-TO DO
------
-
-Get the full ACPI tables working with Coral
-
-
 7 October 2018