[Tboot-changelog] changeset in tboot: Update README for RACM launch support

[Gang W. <gan...@in...>]

changeset f5ceb2e569c4 in /hgroot/tboot/tboot
details: http://tboot.hg.sourceforge.net:8000/hgroot/tboot/tboot?cmd=changeset;node=f5ceb2e569c4
description:
	Update README for RACM launch support

	Signed-off-by: Gang Wei <gan...@in...>

diffstat:

 README |  19 +++++++++++++++++++
 1 files changed, 19 insertions(+), 0 deletions(-)

diffs (29 lines):

diff -r 4ab4774b0593 -r f5ceb2e569c4 README
--- a/README	Tue Dec 25 10:44:16 2012 +0800
+++ b/README	Tue Dec 25 11:04:31 2012 +0800
@@ -202,6 +202,25 @@
 
    A suggested practical value for min_ram is 32M(0x2000000).
 
+o  Tboot provides support to launch Revocation ACM (RACM) to revoke old buggy
+   SINIT version if following command line option is used (default vaule is
+   false):
+       call_racm=true|false
+
+   RACM is also loaded into memory via bootload like grub or syslinux, and is
+   launched with getsec[ENTERACCS] instruction. Below is a example GRUB entry
+   for RACM launch:
+
+       title RACM Launch
+           root (hd0,1)
+           kernel /tboot.gz logging=serial,vga,memory call_racm=true
+           module /racm.bin
+
+   Tboot will always warm reset platform after RACM was launched & executed.
+   Whether RACM launch has succeeded or not could be checked via doing a normal
+   tboot launch right after the warm reset and looking into the TXT.ERRORCODE
+   value output by the normal tboot launch.
+
 
 PCR Usage:
 ---------