chore(bl): add UNALIGNED symbols for TEXT/RODATA

Add symbols to mark end of TEXT/RODATA before page alignment.
Similar change was done by commit 8d69a03f6a ("Various
improvements/cleanups on the linker scripts") for
RO_END/COHERENT_RAM. These symbols help to know how much free
space is in the final binary because of page alignment.

Also show all *UNALIGNED__ symbols via poetry.
For example:
poetry run memory -p zynqmp -b debug

Change-Id: I322beba37dad76be9f4e88ca7e5b3eff2df7d96e
Signed-off-by: Michal Simek <michal.simek@amd.com>

bl1/bl1.ld.S

@@ -41,6 +41,7 @@ SECTIONS {
         *bl1_entrypoint.o(.text*)
         *(SORT_BY_ALIGNMENT(.text*))
         *(.vectors)
+        __TEXT_END_UNALIGNED__ = .;
 
         . = ALIGN(PAGE_SIZE);
 
@@ -72,6 +73,7 @@ SECTIONS {
          * aligned and lld does not align the LMA to the alignment specified
          * on the .data section.
          */
+        __RODATA_END_UNALIGNED__ = .;
         __RODATA_END__ = .;
 
         . = ALIGN(16);

bl2/bl2.ld.S

@@ -35,6 +35,7 @@ SECTIONS {
 
         *(SORT_BY_ALIGNMENT(.text*))
         *(.vectors)
+        __TEXT_END_UNALIGNED__ = .;
 
         . = ALIGN(PAGE_SIZE);
 
@@ -57,6 +58,7 @@ SECTIONS {
 
         RODATA_COMMON
 
+        __RODATA_END_UNALIGNED__ = .;
         . = ALIGN(PAGE_SIZE);
 
         __RODATA_END__ = .;

bl2/bl2_el3.ld.S

@@ -65,6 +65,7 @@ SECTIONS {
 
         *(SORT_BY_ALIGNMENT(.text*))
         *(.vectors)
+        __TEXT_END_UNALIGNED__ = .;
 
         . = ALIGN(PAGE_SIZE);
 
@@ -78,6 +79,7 @@ SECTIONS {
 
         RODATA_COMMON
 
+        __RODATA_END_UNALIGNED__ = .;
         . = ALIGN(PAGE_SIZE);
 
         __RODATA_END__ = .;

bl2u/bl2u.ld.S

@@ -32,6 +32,7 @@ SECTIONS {
         *bl2u_entrypoint.o(.text*)
         *(SORT_BY_ALIGNMENT(.text*))
         *(.vectors)
+        __TEXT_END_UNALIGNED__ = .;
 
         . = ALIGN(PAGE_SIZE);
 
@@ -53,6 +54,7 @@ SECTIONS {
 
         RODATA_COMMON
 
+        __RODATA_END_UNALIGNED__ = .;
         . = ALIGN(PAGE_SIZE);
         __RODATA_END__ = .;
     } >RAM

bl31/bl31.ld.S

@@ -42,6 +42,7 @@ SECTIONS {
         *bl31_entrypoint.o(.text*)
         *(SORT_BY_ALIGNMENT(SORT(.text*)))
         *(.vectors)
+        __TEXT_END_UNALIGNED__ = .;
 
         . = ALIGN(PAGE_SIZE);
 
@@ -62,6 +63,7 @@ SECTIONS {
         . = ALIGN(8);
 
 #   include <lib/el3_runtime/pubsub_events.h>
+        __RODATA_END_UNALIGNED__ = .;
 
         . = ALIGN(PAGE_SIZE);
 

bl32/sp_min/sp_min.ld.S

@@ -34,6 +34,7 @@ SECTIONS {
         *entrypoint.o(.text*)
         *(SORT_BY_ALIGNMENT(.text*))
         *(.vectors)
+        __TEXT_END_UNALIGNED__ = .;
 
         . = ALIGN(PAGE_SIZE);
 
@@ -58,6 +59,7 @@ SECTIONS {
         . = ALIGN(8);
 
 #   include <lib/el3_runtime/pubsub_events.h>
+        __RODATA_END_UNALIGNED__ = .;
 
         . = ALIGN(PAGE_SIZE);
 

bl32/tsp/tsp.ld.S

@@ -30,6 +30,7 @@ SECTIONS {
         *tsp_entrypoint.o(.text*)
         *(.text*)
         *(.vectors)
+        __TEXT_END_UNALIGNED__ = .;
 
         . = ALIGN(PAGE_SIZE);
 
@@ -43,6 +44,7 @@ SECTIONS {
 
         RODATA_COMMON
 
+        __RODATA_END_UNALIGNED__ = .;
         . = ALIGN(PAGE_SIZE);
 
         __RODATA_END__ = .;

docs/design/firmware-design.rst

@@ -1559,8 +1559,10 @@ The following linker symbols are defined for this purpose:
 -  ``__RO_START__``
 -  ``__RO_END__``
 -  ``__TEXT_START__``
+-  ``__TEXT_END_UNALIGNED__``
 -  ``__TEXT_END__``
 -  ``__RODATA_START__``
+-  ``__RODATA_END_UNALIGNED__``
 -  ``__RODATA_END__``
 
 BL1's linker symbols

tools/memory/memory/memmap.py

@@ -100,7 +100,7 @@ def main(
     if symbols:
         expr = (
             r"(.*)(TEXT|BSS|RODATA|STACKS|_OPS|PMF|XLAT|GOT|FCONF"
-            r"|R.M)(.*)(START|END)__$"
+            r"|R.M)(.*)(START|UNALIGNED|END)__$"
         )
         printer.print_symbol_table(
             parser.filter_symbols(parser.symbols, expr), parser.module_names