Various improvements/cleanups on the linker scripts
- Check at link-time that bootloader images will fit in memory
at run time and that they won't overlap each other.
- Remove text and rodata orphan sections.
- Define new linker symbols to remove the need for platform setup
code to know the order of sections.
- Reduce the size of the raw binary images by cutting some sections
out of the disk image and allocating them at load time, whenever
possible.
- Rework alignment constraints on sections.
- Remove unused linker symbols.
- Homogenize linker symbols names across all BLs.
- Add some comments in the linker scripts.
Change-Id: I47a328af0ccc7c8ab47fcc0dc6e7dd26160610b9
diff --git a/plat/fvp/aarch64/fvp_common.c b/plat/fvp/aarch64/fvp_common.c
index 0b5f4eb..fd0e073 100644
--- a/plat/fvp/aarch64/fvp_common.c
+++ b/plat/fvp/aarch64/fvp_common.c
@@ -367,8 +367,6 @@
/*****************************************************************
* LEVEL3 PAGETABLE SETUP
- * The following setup assumes knowledge of the scatter file. This
- * should be reasonable as this is platform specific code.
*****************************************************************/
/* Fill up the level3 pagetable for the trusted SRAM. */
@@ -378,21 +376,13 @@
if (tzram_end_index == tzram_start_index)
tzram_end_index++;
- /*
- * Reusing trom* to mark RO memory. BLX_STACKS follows BLX_RO in the
- * scatter file. Using BLX_RO$$Limit does not work as it might not
- * cross the page boundary thus leading to truncation of valid RO
- * memory
- */
+ /* Reusing trom* to mark RO memory. */
trom_start_index = FOUR_KB_INDEX(ro_start);
trom_end_index = FOUR_KB_INDEX(ro_limit);
if (trom_end_index == trom_start_index)
trom_end_index++;
- /*
- * Reusing dev* to mark coherent device memory. $$Limit works here
- * 'cause the coherent memory section is known to be 4k in size
- */
+ /* Reusing dev* to mark coherent device memory. */
dev0_start_index = FOUR_KB_INDEX(coh_start);
dev0_end_index = FOUR_KB_INDEX(coh_limit);
if (dev0_end_index == dev0_start_index)
@@ -506,6 +496,11 @@
unsigned long coh_start,
unsigned long coh_limit)
{
+ assert(IS_PAGE_ALIGNED(ro_start));
+ assert(IS_PAGE_ALIGNED(ro_limit));
+ assert(IS_PAGE_ALIGNED(coh_start));
+ assert(IS_PAGE_ALIGNED(coh_limit));
+
fill_xlation_tables(mem_layout,
ro_start,
ro_limit,