commit b6f9a2b3667db9fcd0666ab813ed459713c42d0c
author Harrison Mutai <harrison.mutai@arm.com> Wed Apr 19 10:08:56 2023 +0100
committer Harrison Mutai <harrison.mutai@arm.com> Fri May 12 14:38:22 2023 +0100
tree 8034ec7ce97878470376122d06937ed78d3d5c2b
parent e420d1a8b9371f81c94e8223aeade6419f4a5b5f

build(bl2): add symbols for memory layout

Add symbols for mapping the physical memory layout of BL2. There are
symbols that partially satisfy this requirement, however, the naming of
these is inconsistent.

Signed-off-by: Harrison Mutai <harrison.mutai@arm.com>
Change-Id: I83ce5e3f5c45b71022279649f823ed0cb33a145d

bl2/bl2.ld.S

diff --git a/bl2/bl2.ld.S b/bl2/bl2.ld.S
index 458a12b..5f689d5 100644
--- a/bl2/bl2.ld.S
+++ b/bl2/bl2.ld.S
@@ -16,6 +16,8 @@
 }
 
 SECTIONS {
+    RAM_REGION_START = ORIGIN(RAM);
+    RAM_REGION_LENGTH = LENGTH(RAM);
     . = BL2_BASE;
 
     ASSERT(. == ALIGN(PAGE_SIZE),
@@ -116,6 +118,7 @@
 
     __RW_END__ = .;
     __BL2_END__ = .;
+    RAM_REGION_END = .;
 
     __BSS_SIZE__ = SIZEOF(.bss);
 

bl2/bl2_el3.ld.S

diff --git a/bl2/bl2_el3.ld.S b/bl2/bl2_el3.ld.S
index aa457fa..5da631c 100644
--- a/bl2/bl2_el3.ld.S
+++ b/bl2/bl2_el3.ld.S
@@ -31,7 +31,12 @@
 #endif /* !BL2_IN_XIP_MEM */
 
 SECTIONS {
+    RAM_REGION_START = ORIGIN(RAM);
+    RAM_REGION_LENGTH = LENGTH(RAM);
 #if BL2_IN_XIP_MEM
+    ROM_REGION_START = ORIGIN(ROM);
+    ROM_REGION_LENGTH = LENGTH(ROM);
+
     . = BL2_RO_BASE;
 
     ASSERT(. == ALIGN(PAGE_SIZE),
@@ -43,6 +48,11 @@
         "BL2_BASE address is not aligned on a page boundary.")
 #endif /* BL2_IN_XIP_MEM */
 
+#if SEPARATE_BL2_NOLOAD_REGION
+    RAM_NOLOAD_REGION_START = ORIGIN(RAM_NOLOAD);
+    RAM_NOLOAD_REGION_LENGTH = LENGTH(RAM_NOLOAD);
+#endif
+
 #if SEPARATE_CODE_AND_RODATA
     .text . : {
         __TEXT_START__ = .;
@@ -109,6 +119,7 @@
         "cpu_ops not defined for this platform.")
 
 #if BL2_IN_XIP_MEM
+    ROM_REGION_END = .;
     . = BL2_RW_BASE;
 
     ASSERT(BL2_RW_BASE == ALIGN(PAGE_SIZE),
@@ -138,6 +149,7 @@
 
 #if SEPARATE_BL2_NOLOAD_REGION
     __BL2_NOLOAD_END__ = .;
+    RAM_NOLOAD_REGION_END = .;
 
     . = SAVED_ADDR;
 #endif /* SEPARATE_BL2_NOLOAD_REGION */
@@ -198,6 +210,7 @@
         __COHERENT_RAM_END_UNALIGNED__ - __COHERENT_RAM_START__;
 #endif /* USE_COHERENT_MEM */
 
+    RAM_REGION_END = .;
 #if BL2_IN_XIP_MEM
     ASSERT(. <= BL2_RW_LIMIT, "BL2's RW content has exceeded its limit.")
 #else /* BL2_IN_XIP_MEM */