Rework type usage in Trusted Firmware

This patch reworks type usage in generic code, drivers and ARM platform files
to make it more portable. The major changes done with respect to
type usage are as listed below:

* Use uintptr_t for storing address instead of uint64_t or unsigned long.
* Review usage of unsigned long as it can no longer be assumed to be 64 bit.
* Use u_register_t for register values whose width varies depending on
  whether AArch64 or AArch32.
* Use generic C types where-ever possible.

In addition to the above changes, this patch also modifies format specifiers
in print invocations so that they are AArch64/AArch32 agnostic. Only files
related to upcoming feature development have been reworked.

Change-Id: I9f8c78347c5a52ba7027ff389791f1dad63ee5f8

2 files changed, 31 insertions, 30 deletions

diff --git a/include/common/bl_common.h b/include/common/bl_common.h
index 646a8172..3aa08360 100644
--- a/include/common/bl_common.h
+++ b/include/common/bl_common.h
@@ -137,6 +137,7 @@
 #include <cassert.h>
 #include <stdint.h>
 #include <stddef.h>
+#include <types.h>
 #include <utils.h> /* To retain compatibility */
 
 /*
@@ -144,28 +145,28 @@
  * BL images
  */
 #if SEPARATE_CODE_AND_RODATA
-extern unsigned long __TEXT_START__;
-extern unsigned long __TEXT_END__;
-extern unsigned long __RODATA_START__;
-extern unsigned long __RODATA_END__;
+extern uintptr_t __TEXT_START__;
+extern uintptr_t __TEXT_END__;
+extern uintptr_t __RODATA_START__;
+extern uintptr_t __RODATA_END__;
 #else
-extern unsigned long __RO_START__;
-extern unsigned long __RO_END__;
+extern uintptr_t __RO_START__;
+extern uintptr_t __RO_END__;
 #endif
 
 #if IMAGE_BL2
-extern unsigned long __BL2_END__;
+extern uintptr_t __BL2_END__;
 #elif IMAGE_BL2U
-extern unsigned long __BL2U_END__;
+extern uintptr_t __BL2U_END__;
 #elif IMAGE_BL31
-extern unsigned long __BL31_END__;
+extern uintptr_t __BL31_END__;
 #elif IMAGE_BL32
-extern unsigned long __BL32_END__;
+extern uintptr_t __BL32_END__;
 #endif /* IMAGE_BLX */
 
 #if USE_COHERENT_MEM
-extern unsigned long __COHERENT_RAM_START__;
-extern unsigned long __COHERENT_RAM_END__;
+extern uintptr_t __COHERENT_RAM_START__;
+extern uintptr_t __COHERENT_RAM_END__;
 #endif
 
 
@@ -174,21 +175,21 @@ extern unsigned long __COHERENT_RAM_END__;
  * memory is available for its use and how much is already used.
  ******************************************************************************/
 typedef struct meminfo {
-	uint64_t total_base;
+	uintptr_t total_base;
 	size_t total_size;
-	uint64_t free_base;
+	uintptr_t free_base;
 	size_t free_size;
 } meminfo_t;
 
 typedef struct aapcs64_params {
-	unsigned long arg0;
-	unsigned long arg1;
-	unsigned long arg2;
-	unsigned long arg3;
-	unsigned long arg4;
-	unsigned long arg5;
-	unsigned long arg6;
-	unsigned long arg7;
+	u_register_t arg0;
+	u_register_t arg1;
+	u_register_t arg2;
+	u_register_t arg3;
+	u_register_t arg4;
+	u_register_t arg5;
+	u_register_t arg6;
+	u_register_t arg7;
 } aapcs64_params_t;
 
 /***************************************************************************
@@ -284,7 +285,7 @@ CASSERT(ENTRY_POINT_INFO_ARGS_OFFSET == \
 		__builtin_offsetof(entry_point_info_t, args), \
 		assert_BL31_args_offset_mismatch);
 
-CASSERT(sizeof(unsigned long) ==
+CASSERT(sizeof(uintptr_t) ==
 		__builtin_offsetof(entry_point_info_t, spsr) - \
 		__builtin_offsetof(entry_point_info_t, pc), \
 		assert_entrypoint_and_spsr_should_be_adjacent);
@@ -292,8 +293,8 @@ CASSERT(sizeof(unsigned long) ==
 /*******************************************************************************
  * Function & variable prototypes
  ******************************************************************************/
-unsigned long page_align(unsigned long, unsigned);
-unsigned long image_size(unsigned int image_id);
+uintptr_t page_align(uintptr_t, unsigned);
+size_t image_size(unsigned int image_id);
 int load_image(meminfo_t *mem_layout,
 	       unsigned int image_id,
 	       uintptr_t image_base,
@@ -307,8 +308,8 @@ int load_auth_image(meminfo_t *mem_layout,
 extern const char build_message[];
 extern const char version_string[];
 
-void reserve_mem(uint64_t *free_base, size_t *free_size,
-		uint64_t addr, size_t size);
+void reserve_mem(uintptr_t *free_base, size_t *free_size,
+		uintptr_t addr, size_t size);
 
 void print_entry_point_info(const entry_point_info_t *ep_info);
 
diff --git a/include/common/context_mgmt.h b/include/common/context_mgmt.h
index a76ecbe3..8a38ee5d 100644
--- a/include/common/context_mgmt.h
+++ b/include/common/context_mgmt.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2013-2015, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2013-2016, ARM Limited and Contributors. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
@@ -63,9 +63,9 @@ void cm_init_context_by_index(unsigned int cpu_idx,
 void cm_prepare_el3_exit(uint32_t security_state);
 void cm_el1_sysregs_context_save(uint32_t security_state);
 void cm_el1_sysregs_context_restore(uint32_t security_state);
-void cm_set_elr_el3(uint32_t security_state, uint64_t entrypoint);
+void cm_set_elr_el3(uint32_t security_state, uintptr_t entrypoint);
 void cm_set_elr_spsr_el3(uint32_t security_state,
-			 uint64_t entrypoint, uint32_t spsr);
+			uintptr_t entrypoint, uint32_t spsr);
 void cm_write_scr_el3_bit(uint32_t security_state,
 			  uint32_t bit_pos,
 			  uint32_t value);