commit ae9677b4058806365bf7195df1ce9743a590b74f
author Madhukar Pappireddy <madhukar.pappireddy@arm.com> Mon Jan 27 13:37:51 2020 -0600
committer Madhukar Pappireddy <madhukar.pappireddy@arm.com> Wed Mar 11 11:24:55 2020 -0500
tree 915ac886e732e92c0f4a8a8a85722736d9c02d93
parent 81519695f2b948ac6d21d2fb3c2e485c12094d9a

fconf: necessary modifications to support fconf in BL31 & SP_MIN

Necessary infrastructure added to integrate fconf framework in BL31 & SP_MIN.
Created few populator() functions which parse HW_CONFIG device tree
and registered them with fconf framework. Many of the changes are
only applicable for fvp platform.

This patch:
1. Adds necessary symbols and sections in BL31, SP_MIN linker script
2. Adds necessary memory map entry for translation in BL31, SP_MIN
3. Creates an abstraction layer for hardware configuration based on
   fconf framework
4. Adds necessary changes to build flow (makefiles)
5. Minimal callback to read hw_config dtb for capturing properties
   related to GIC(interrupt-controller node)
6. updates the fconf documentation

Change-Id: Ib6292071f674ef093962b9e8ba0d322b7bf919af
Signed-off-by: Madhukar Pappireddy <madhukar.pappireddy@arm.com>

bl31/bl31.ld.S

diff --git a/bl31/bl31.ld.S b/bl31/bl31.ld.S
index 4a1c5f3..fce9eb2 100644
--- a/bl31/bl31.ld.S
+++ b/bl31/bl31.ld.S
@@ -54,6 +54,11 @@
         KEEP(*(rt_svc_descs))
         __RT_SVC_DESCS_END__ = .;
 
+        . = ALIGN(8);
+         __FCONF_POPULATOR_START__ = .;
+        KEEP(*(.fconf_populator))
+         __FCONF_POPULATOR_END__ = .;
+
 #if ENABLE_PMF
         /* Ensure 8-byte alignment for descriptors and ensure inclusion */
         . = ALIGN(8);
@@ -101,6 +106,11 @@
         KEEP(*(rt_svc_descs))
         __RT_SVC_DESCS_END__ = .;
 
+        . = ALIGN(8);
+         __FCONF_POPULATOR_START__ = .;
+        KEEP(*(.fconf_populator))
+         __FCONF_POPULATOR_END__ = .;
+
 #if ENABLE_PMF
         /* Ensure 8-byte alignment for descriptors and ensure inclusion */
         . = ALIGN(8);