Replace magic numbers in linkerscripts by PAGE_SIZE

When defining different sections in linker scripts it is needed to align
them to multiples of the page size. In most linker scripts this is done
by aligning to the hardcoded value 4096 instead of PAGE_SIZE.

This may be confusing when taking a look at all the codebase, as 4096
is used in some parts that aren't meant to be a multiple of the page
size.

Change-Id: I36c6f461c7782437a58d13d37ec8b822a1663ec1
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>

9 files changed, 65 insertions, 54 deletions

diff --git a/bl1/bl1.ld.S b/bl1/bl1.ld.S
index 2c453bd2..e4c454b3 100644
--- a/bl1/bl1.ld.S
+++ b/bl1/bl1.ld.S
@@ -5,6 +5,7 @@
  */
 
 #include <platform_def.h>
+#include <xlat_tables_defs.h>
 
 OUTPUT_FORMAT(PLATFORM_LINKER_FORMAT)
 OUTPUT_ARCH(PLATFORM_LINKER_ARCH)
@@ -18,7 +19,7 @@ MEMORY {
 SECTIONS
 {
     . = BL1_RO_BASE;
-    ASSERT(. == ALIGN(4096),
+    ASSERT(. == ALIGN(PAGE_SIZE),
            "BL1_RO_BASE address is not aligned on a page boundary.")
 
 #if SEPARATE_CODE_AND_RODATA
@@ -27,7 +28,7 @@ SECTIONS
         *bl1_entrypoint.o(.text*)
         *(.text*)
         *(.vectors)
-        . = NEXT(4096);
+        . = NEXT(PAGE_SIZE);
         __TEXT_END__ = .;
      } >ROM
 
@@ -88,7 +89,7 @@ SECTIONS
            "cpu_ops not defined for this platform.")
 
     . = BL1_RW_BASE;
-    ASSERT(BL1_RW_BASE == ALIGN(4096),
+    ASSERT(BL1_RW_BASE == ALIGN(PAGE_SIZE),
            "BL1_RW_BASE address is not aligned on a page boundary.")
 
     /*
@@ -141,7 +142,7 @@ SECTIONS
      * are not mixed with normal data.  This is required to set up the correct
      * memory attributes for the coherent data page tables.
      */
-    coherent_ram (NOLOAD) : ALIGN(4096) {
+    coherent_ram (NOLOAD) : ALIGN(PAGE_SIZE) {
         __COHERENT_RAM_START__ = .;
         *(tzfw_coherent_mem)
         __COHERENT_RAM_END_UNALIGNED__ = .;
@@ -150,7 +151,7 @@ SECTIONS
          * as device memory.  No other unexpected data must creep in.
          * Ensure the rest of the current memory page is unused.
          */
-        . = NEXT(4096);
+        . = NEXT(PAGE_SIZE);
         __COHERENT_RAM_END__ = .;
     } >RAM
 #endif
diff --git a/bl2/bl2.ld.S b/bl2/bl2.ld.S
index f3ab7061..4fe78f9e 100644
--- a/bl2/bl2.ld.S
+++ b/bl2/bl2.ld.S
@@ -5,6 +5,7 @@
  */
 
 #include <platform_def.h>
+#include <xlat_tables_defs.h>
 
 OUTPUT_FORMAT(PLATFORM_LINKER_FORMAT)
 OUTPUT_ARCH(PLATFORM_LINKER_ARCH)
@@ -18,7 +19,7 @@ MEMORY {
 SECTIONS
 {
     . = BL2_BASE;
-    ASSERT(. == ALIGN(4096),
+    ASSERT(. == ALIGN(PAGE_SIZE),
            "BL2_BASE address is not aligned on a page boundary.")
 
 #if SEPARATE_CODE_AND_RODATA
@@ -27,7 +28,7 @@ SECTIONS
         *bl2_entrypoint.o(.text*)
         *(.text*)
         *(.vectors)
-        . = NEXT(4096);
+        . = NEXT(PAGE_SIZE);
         __TEXT_END__ = .;
      } >RAM
 
@@ -41,7 +42,7 @@ SECTIONS
         KEEP(*(.img_parser_lib_descs))
         __PARSER_LIB_DESCS_END__ = .;
 
-        . = NEXT(4096);
+        . = NEXT(PAGE_SIZE);
         __RODATA_END__ = .;
     } >RAM
 #else
@@ -64,7 +65,7 @@ SECTIONS
          * read-only, executable.  No RW data from the next section must
          * creep in.  Ensure the rest of the current memory page is unused.
          */
-        . = NEXT(4096);
+        . = NEXT(PAGE_SIZE);
         __RO_END__ = .;
     } >RAM
 #endif
@@ -120,7 +121,7 @@ SECTIONS
      * are not mixed with normal data.  This is required to set up the correct
      * memory attributes for the coherent data page tables.
      */
-    coherent_ram (NOLOAD) : ALIGN(4096) {
+    coherent_ram (NOLOAD) : ALIGN(PAGE_SIZE) {
         __COHERENT_RAM_START__ = .;
         *(tzfw_coherent_mem)
         __COHERENT_RAM_END_UNALIGNED__ = .;
@@ -129,7 +130,7 @@ SECTIONS
          * as device memory.  No other unexpected data must creep in.
          * Ensure the rest of the current memory page is unused.
          */
-        . = NEXT(4096);
+        . = NEXT(PAGE_SIZE);
         __COHERENT_RAM_END__ = .;
     } >RAM
 #endif
diff --git a/bl2u/bl2u.ld.S b/bl2u/bl2u.ld.S
index efae293d..da587172 100644
--- a/bl2u/bl2u.ld.S
+++ b/bl2u/bl2u.ld.S
@@ -5,6 +5,7 @@
  */
 
 #include <platform_def.h>
+#include <xlat_tables_defs.h>
 
 OUTPUT_FORMAT(PLATFORM_LINKER_FORMAT)
 OUTPUT_ARCH(PLATFORM_LINKER_ARCH)
@@ -18,7 +19,7 @@ MEMORY {
 SECTIONS
 {
     . = BL2U_BASE;
-    ASSERT(. == ALIGN(4096),
+    ASSERT(. == ALIGN(PAGE_SIZE),
            "BL2U_BASE address is not aligned on a page boundary.")
 
 #if SEPARATE_CODE_AND_RODATA
@@ -27,14 +28,14 @@ SECTIONS
         *bl2u_entrypoint.o(.text*)
         *(.text*)
         *(.vectors)
-        . = NEXT(4096);
+        . = NEXT(PAGE_SIZE);
         __TEXT_END__ = .;
      } >RAM
 
     .rodata . : {
         __RODATA_START__ = .;
         *(.rodata*)
-        . = NEXT(4096);
+        . = NEXT(PAGE_SIZE);
         __RODATA_END__ = .;
     } >RAM
 #else
@@ -51,7 +52,7 @@ SECTIONS
          * read-only, executable.  No RW data from the next section must
          * creep in.  Ensure the rest of the current memory page is unused.
          */
-        . = NEXT(4096);
+        . = NEXT(PAGE_SIZE);
         __RO_END__ = .;
     } >RAM
 #endif
@@ -107,7 +108,7 @@ SECTIONS
      * are not mixed with normal data.  This is required to set up the correct
      * memory attributes for the coherent data page tables.
      */
-    coherent_ram (NOLOAD) : ALIGN(4096) {
+    coherent_ram (NOLOAD) : ALIGN(PAGE_SIZE) {
         __COHERENT_RAM_START__ = .;
         *(tzfw_coherent_mem)
         __COHERENT_RAM_END_UNALIGNED__ = .;
@@ -116,7 +117,7 @@ SECTIONS
          * as device memory.  No other unexpected data must creep in.
          * Ensure the rest of the current memory page is unused.
          */
-        . = NEXT(4096);
+        . = NEXT(PAGE_SIZE);
         __COHERENT_RAM_END__ = .;
     } >RAM
 #endif
diff --git a/bl31/bl31.ld.S b/bl31/bl31.ld.S
index 7f442d00..dd046c43 100644
--- a/bl31/bl31.ld.S
+++ b/bl31/bl31.ld.S
@@ -5,6 +5,7 @@
  */
 
 #include <platform_def.h>
+#include <xlat_tables_defs.h>
 
 OUTPUT_FORMAT(PLATFORM_LINKER_FORMAT)
 OUTPUT_ARCH(PLATFORM_LINKER_ARCH)
@@ -22,7 +23,7 @@ MEMORY {
 SECTIONS
 {
     . = BL31_BASE;
-    ASSERT(. == ALIGN(4096),
+    ASSERT(. == ALIGN(PAGE_SIZE),
            "BL31_BASE address is not aligned on a page boundary.")
 
 #if SEPARATE_CODE_AND_RODATA
@@ -31,7 +32,7 @@ SECTIONS
         *bl31_entrypoint.o(.text*)
         *(.text*)
         *(.vectors)
-        . = NEXT(4096);
+        . = NEXT(PAGE_SIZE);
         __TEXT_END__ = .;
     } >RAM
 
@@ -66,7 +67,7 @@ SECTIONS
         . = ALIGN(8);
 #include <pubsub_events.h>
 
-        . = NEXT(4096);
+        . = NEXT(PAGE_SIZE);
         __RODATA_END__ = .;
     } >RAM
 #else
@@ -110,7 +111,7 @@ SECTIONS
          * executable.  No RW data from the next section must creep in.
          * Ensure the rest of the current memory page is unused.
          */
-        . = NEXT(4096);
+        . = NEXT(PAGE_SIZE);
         __RO_END__ = .;
     } >RAM
 #endif
@@ -127,10 +128,10 @@ SECTIONS
      * There's no need to include this into the RO section of BL31 because it
      * doesn't need to be accessed by BL31.
      */
-    spm_shim_exceptions : ALIGN(4096) {
+    spm_shim_exceptions : ALIGN(PAGE_SIZE) {
         __SPM_SHIM_EXCEPTIONS_START__ = .;
         *(.spm_shim_exceptions)
-        . = NEXT(4096);
+        . = NEXT(PAGE_SIZE);
         __SPM_SHIM_EXCEPTIONS_END__ = .;
     } >RAM
 #endif
@@ -223,7 +224,7 @@ SECTIONS
         __SP_IMAGE_XLAT_TABLES_START__ = .;
         *secure_partition*.o(xlat_table)
         /* Make sure that the rest of the page is empty. */
-        . = NEXT(4096);
+        . = NEXT(PAGE_SIZE);
         __SP_IMAGE_XLAT_TABLES_END__ = .;
 #endif
         *(xlat_table)
@@ -236,7 +237,7 @@ SECTIONS
      * are not mixed with normal data.  This is required to set up the correct
      * memory attributes for the coherent data page tables.
      */
-    coherent_ram (NOLOAD) : ALIGN(4096) {
+    coherent_ram (NOLOAD) : ALIGN(PAGE_SIZE) {
         __COHERENT_RAM_START__ = .;
         /*
          * Bakery locks are stored in coherent memory
@@ -251,7 +252,7 @@ SECTIONS
          * as device memory.  No other unexpected data must creep in.
          * Ensure the rest of the current memory page is unused.
          */
-        . = NEXT(4096);
+        . = NEXT(PAGE_SIZE);
         __COHERENT_RAM_END__ = .;
     } >RAM
 #endif
diff --git a/bl32/sp_min/sp_min.ld.S b/bl32/sp_min/sp_min.ld.S
index fc44d524..8202cf9e 100644
--- a/bl32/sp_min/sp_min.ld.S
+++ b/bl32/sp_min/sp_min.ld.S
@@ -5,6 +5,7 @@
  */
 
 #include <platform_def.h>
+#include <xlat_tables_defs.h>
 
 OUTPUT_FORMAT(elf32-littlearm)
 OUTPUT_ARCH(arm)
@@ -18,7 +19,7 @@ MEMORY {
 SECTIONS
 {
     . = BL32_BASE;
-   ASSERT(. == ALIGN(4096),
+   ASSERT(. == ALIGN(PAGE_SIZE),
           "BL32_BASE address is not aligned on a page boundary.")
 
 #if SEPARATE_CODE_AND_RODATA
@@ -27,7 +28,7 @@ SECTIONS
         *entrypoint.o(.text*)
         *(.text*)
         *(.vectors)
-        . = NEXT(4096);
+        . = NEXT(PAGE_SIZE);
         __TEXT_END__ = .;
     } >RAM
 
@@ -54,7 +55,7 @@ SECTIONS
         . = ALIGN(8);
 #include <pubsub_events.h>
 
-        . = NEXT(4096);
+        . = NEXT(PAGE_SIZE);
         __RODATA_END__ = .;
     } >RAM
 #else
@@ -91,7 +92,7 @@ SECTIONS
          * read-only, executable.  No RW data from the next section must
          * creep in.  Ensure the rest of the current memory block is unused.
          */
-        . = NEXT(4096);
+        . = NEXT(PAGE_SIZE);
         __RO_END__ = .;
     } >RAM
 #endif
@@ -186,7 +187,7 @@ SECTIONS
      * are not mixed with normal data.  This is required to set up the correct
      * memory attributes for the coherent data page tables.
      */
-    coherent_ram (NOLOAD) : ALIGN(4096) {
+    coherent_ram (NOLOAD) : ALIGN(PAGE_SIZE) {
         __COHERENT_RAM_START__ = .;
         /*
          * Bakery locks are stored in coherent memory
@@ -201,7 +202,7 @@ SECTIONS
          * as device memory.  No other unexpected data must creep in.
          * Ensure the rest of the current memory page is unused.
          */
-        . = NEXT(4096);
+        . = NEXT(PAGE_SIZE);
         __COHERENT_RAM_END__ = .;
     } >RAM
 
diff --git a/bl32/tsp/tsp.ld.S b/bl32/tsp/tsp.ld.S
index 2b672efe..d256b46c 100644
--- a/bl32/tsp/tsp.ld.S
+++ b/bl32/tsp/tsp.ld.S
@@ -5,6 +5,7 @@
  */
 
 #include <platform_def.h>
+#include <xlat_tables_defs.h>
 
 OUTPUT_FORMAT(PLATFORM_LINKER_FORMAT)
 OUTPUT_ARCH(PLATFORM_LINKER_ARCH)
@@ -19,7 +20,7 @@ MEMORY {
 SECTIONS
 {
     . = BL32_BASE;
-    ASSERT(. == ALIGN(4096),
+    ASSERT(. == ALIGN(PAGE_SIZE),
            "BL32_BASE address is not aligned on a page boundary.")
 
 #if SEPARATE_CODE_AND_RODATA
@@ -28,14 +29,14 @@ SECTIONS
         *tsp_entrypoint.o(.text*)
         *(.text*)
         *(.vectors)
-        . = NEXT(4096);
+        . = NEXT(PAGE_SIZE);
         __TEXT_END__ = .;
     } >RAM
 
     .rodata . : {
         __RODATA_START__ = .;
         *(.rodata*)
-        . = NEXT(4096);
+        . = NEXT(PAGE_SIZE);
         __RODATA_END__ = .;
     } >RAM
 #else
@@ -51,7 +52,7 @@ SECTIONS
          * read-only, executable.  No RW data from the next section must
          * creep in.  Ensure the rest of the current memory page is unused.
          */
-        . = NEXT(4096);
+        . = NEXT(PAGE_SIZE);
         __RO_END__ = .;
     } >RAM
 #endif
@@ -106,7 +107,7 @@ SECTIONS
      * are not mixed with normal data.  This is required to set up the correct
      * memory attributes for the coherent data page tables.
      */
-    coherent_ram (NOLOAD) : ALIGN(4096) {
+    coherent_ram (NOLOAD) : ALIGN(PAGE_SIZE) {
         __COHERENT_RAM_START__ = .;
         *(tzfw_coherent_mem)
         __COHERENT_RAM_END_UNALIGNED__ = .;
@@ -115,7 +116,7 @@ SECTIONS
          * as device memory.  No other unexpected data must creep in.
          * Ensure the rest of the current memory page is unused.
          */
-        . = NEXT(4096);
+        . = NEXT(PAGE_SIZE);
         __COHERENT_RAM_END__ = .;
     } >RAM
 #endif
diff --git a/include/plat/arm/common/arm_common.ld.S b/include/plat/arm/common/arm_common.ld.S
index 478b08c2..6edfa099 100644
--- a/include/plat/arm/common/arm_common.ld.S
+++ b/include/plat/arm/common/arm_common.ld.S
@@ -6,6 +6,8 @@
 #ifndef __ARM_COMMON_LD_S__
 #define __ARM_COMMON_LD_S__
 
+#include <xlat_tables_defs.h>
+
 MEMORY {
     EL3_SEC_DRAM (rw): ORIGIN = ARM_EL3_TZC_DRAM1_BASE, LENGTH = ARM_EL3_TZC_DRAM1_SIZE
 }
@@ -13,14 +15,14 @@ MEMORY {
 SECTIONS
 {
 	. = ARM_EL3_TZC_DRAM1_BASE;
-	ASSERT(. == ALIGN(4096),
+	ASSERT(. == ALIGN(PAGE_SIZE),
 	"ARM_EL3_TZC_DRAM_BASE address is not aligned on a page boundary.")
-	el3_tzc_dram (NOLOAD) : ALIGN(4096) {
+	el3_tzc_dram (NOLOAD) : ALIGN(PAGE_SIZE) {
 	__EL3_SEC_DRAM_START__ = .;
 	*(arm_el3_tzc_dram)
 	__EL3_SEC_DRAM_UNALIGNED_END__ = .;
 
-	. = NEXT(4096);
+	. = NEXT(PAGE_SIZE);
 	__EL3_SEC_DRAM_END__ = .;
 	} >EL3_SEC_DRAM
 }
diff --git a/plat/mediatek/mt6795/bl31.ld.S b/plat/mediatek/mt6795/bl31.ld.S
index 0f60a0c6..eacb1b27 100644
--- a/plat/mediatek/mt6795/bl31.ld.S
+++ b/plat/mediatek/mt6795/bl31.ld.S
@@ -5,6 +5,7 @@
  */
 
 #include <platform_def.h>
+#include <xlat_tables_defs.h>
 
 OUTPUT_FORMAT(PLATFORM_LINKER_FORMAT)
 OUTPUT_ARCH(PLATFORM_LINKER_ARCH)
@@ -29,7 +30,7 @@ SECTIONS
         *(.vectors)
     } >RAM
 
-    ASSERT(. == ALIGN(4096),
+    ASSERT(. == ALIGN(PAGE_SIZE),
            "BL31_BASE address is not aligned on a page boundary.")
 
     ro . : {
@@ -58,7 +59,7 @@ SECTIONS
          * executable.  No RW data from the next section must creep in.
          * Ensure the rest of the current memory page is unused.
          */
-        . = NEXT(4096);
+        . = NEXT(PAGE_SIZE);
         __RO_END__ = .;
     } >RAM
 
@@ -144,7 +145,7 @@ SECTIONS
      * are not mixed with normal data.  This is required to set up the correct
      * memory attributes for the coherent data page tables.
      */
-    coherent_ram (NOLOAD) : ALIGN(4096) {
+    coherent_ram (NOLOAD) : ALIGN(PAGE_SIZE) {
         __COHERENT_RAM_START__ = .;
         /*
          * Bakery locks are stored in coherent memory
@@ -159,7 +160,7 @@ SECTIONS
          * as device memory.  No other unexpected data must creep in.
          * Ensure the rest of the current memory page is unused.
          */
-        . = NEXT(4096);
+        . = NEXT(PAGE_SIZE);
         __COHERENT_RAM_END__ = .;
     } >RAM2
 #endif
diff --git a/plat/rockchip/rk3399/include/plat.ld.S b/plat/rockchip/rk3399/include/plat.ld.S
index c42d9a9a..85f4dc33 100644
--- a/plat/rockchip/rk3399/include/plat.ld.S
+++ b/plat/rockchip/rk3399/include/plat.ld.S
@@ -6,6 +6,8 @@
 #ifndef __ROCKCHIP_PLAT_LD_S__
 #define __ROCKCHIP_PLAT_LD_S__
 
+#include <xlat_tables_defs.h>
+
 MEMORY {
     SRAM (rwx): ORIGIN = SRAM_BASE, LENGTH = SRAM_SIZE
     PMUSRAM (rwx): ORIGIN = PMUSRAM_BASE, LENGTH = PMUSRAM_RSIZE
@@ -14,7 +16,7 @@ MEMORY {
 SECTIONS
 {
 	. = SRAM_BASE;
-	ASSERT(. == ALIGN(4096),
+	ASSERT(. == ALIGN(PAGE_SIZE),
 		"SRAM_BASE address is not aligned on a page boundary.")
 
 	/*
@@ -27,40 +29,40 @@ SECTIONS
 	 * | sram data
 	 * ----------------
 	 */
-	.incbin_sram : ALIGN(4096) {
+	.incbin_sram : ALIGN(PAGE_SIZE) {
 		__sram_incbin_start = .;
 		*(.sram.incbin)
 		 __sram_incbin_real_end = .;
-		. = ALIGN(4096);
+		. = ALIGN(PAGE_SIZE);
 		__sram_incbin_end = .;
 	} >SRAM
 	ASSERT((__sram_incbin_real_end - __sram_incbin_start) <=
 		SRAM_BIN_LIMIT, ".incbin_sram has exceeded its limit")
 
-	.text_sram : ALIGN(4096) {
+	.text_sram : ALIGN(PAGE_SIZE) {
 		__bl31_sram_text_start = .;
 		*(.sram.text)
 		*(.sram.rodata)
 		__bl31_sram_text_real_end = .;
-		. = ALIGN(4096);
+		. = ALIGN(PAGE_SIZE);
 		__bl31_sram_text_end = .;
 	} >SRAM
 	ASSERT((__bl31_sram_text_real_end - __bl31_sram_text_start) <=
 		SRAM_TEXT_LIMIT, ".text_sram has exceeded its limit")
 
-	.data_sram : ALIGN(4096) {
+	.data_sram : ALIGN(PAGE_SIZE) {
 		__bl31_sram_data_start = .;
 		*(.sram.data)
 		__bl31_sram_data_real_end = .;
-		. = ALIGN(4096);
+		. = ALIGN(PAGE_SIZE);
 		__bl31_sram_data_end = .;
 	} >SRAM
 	ASSERT((__bl31_sram_data_real_end - __bl31_sram_data_start) <=
 		SRAM_DATA_LIMIT, ".data_sram has exceeded its limit")
 
-	.stack_sram : ALIGN(4096) {
+	.stack_sram : ALIGN(PAGE_SIZE) {
 		__bl31_sram_stack_start = .;
-		. += 4096;
+		. += PAGE_SIZE;
 		__bl31_sram_stack_end = .;
 	} >SRAM