Add support for BL2 in XIP memory
In some use-cases BL2 will be stored in eXecute In Place (XIP) memory,
like BL1. In these use-cases, it is necessary to initialize the RW sections
in RAM, while leaving the RO sections in place. This patch enable this
use-case with a new build option, BL2_IN_XIP_MEM. For now, this option
is only supported when BL2_AT_EL3 is 1.
Signed-off-by: Jiafei Pan <Jiafei.Pan@nxp.com>
diff --git a/docs/user-guide.rst b/docs/user-guide.rst
index 5794855..fdf1568 100644
--- a/docs/user-guide.rst
+++ b/docs/user-guide.rst
@@ -246,6 +246,12 @@
- ``BL2_AT_EL3``: This is an optional build option that enables the use of
BL2 at EL3 execution level.
+- ``BL2_IN_XIP_MEM``: In some use-cases BL2 will be stored in eXecute In Place
+ (XIP) memory, like BL1. In these use-cases, it is necessary to initialize
+ the RW sections in RAM, while leaving the RO sections in place. This option
+ enable this use-case. For now, this option is only supported when BL2_AT_EL3
+ is set to '1'.
+
- ``BL31``: This is an optional build option which specifies the path to
BL31 image for the ``fip`` target. In this case, the BL31 in TF-A will not
be built.