Restructure framework's directory hierarchy

This is a first, rough attempt at cleaning the framework's directory
hierarchy.

Basically, almost everything is moved to individual directories
under lib/. What's left under framework/ are the core features of
the framework, i.e. things that test cases won't ever need.

This patch also introduces some cleanups.

The following functions are removed:

 - tftf_platform_get_time()
   We'll need such a function in the future to measure tests execution
   time but there's no reason for it to be platform-specific, we can
   use the Generic Timer instead when we get to it.
   Tracked by GENFW-506.

 - tftf_platform_reset()
   We'll need a function to reset the platform in the future but at
   the moment it is not used.
   Tracked by GENFW-500.

 - tftf_platform_core_whoami()
   Not needed. A CPU can just call read_mpidr_el1() to get its MPID,
   then platform_get_core_pos() to get the corresponding linear ID.
   See GENFW-483.

 - tftf_is_core_enabled()
   Superseded by plat_get_aff_state().

 - tftf_core_participates_in_testcase()
   Superseded by the platform API to query the platform topology.

Move the following defintions out of framework/helpers.c:

 - Move mp_printf() in lib/utils/mp_printf.c
 - Move MMU functions into plat_common.c as default implementations
   of these platform functions.

What's left in helpers.c then are helper functions to write test
results into NVM so rename the file into nvm_results_helpers.c.

Remove bl_common.h as it contains only Trusted Firmware specific
definitions.

Rename tests_api.h into tftf_lib.h. Also move some of its
declarations into new header files: irq.h, systimer.h, sgi.h.

Remove tftf_common.h and move its declarations to tftf_lib.h.

Rename rt_services/ into runtime_services/.

The test cases' directory hierarchy needs to be restructured as well,
this will come in a subsequent patch.

Change-Id: I143c4c888586301594f6b6339d6e48cbbd817570

1 files changed, 54 insertions, 9 deletions

diff --git a/plat/common/aarch64/plat_common.c b/plat/common/aarch64/plat_common.c
index 90574fd..eba3881 100644
--- a/plat/common/aarch64/plat_common.c
+++ b/plat/common/aarch64/plat_common.c
@@ -28,22 +28,67 @@
  * POSSIBILITY OF SUCH DAMAGE.
  */
 
+#include <arch_helpers.h>
+#include <debug.h>
+#include <platform.h>
 #include <xlat_tables.h>
 
+extern unsigned long __COHERENT_RAM_START__;
+extern unsigned long __COHERENT_RAM_END__;
+
 /*
- * The following 2 platform setup functions are weakly defined. They
- * provide typical implementations that may be re-used by multiple
- * platforms but may also be overridden by a platform if required.
+ * The next 2 constants identify the extents of the coherent memory region.
+ * These addresses are used by the MMU setup code and therefore they must be
+ * page-aligned.  It is the responsibility of the linker script to ensure that
+ * __COHERENT_RAM_START__ and __COHERENT_RAM_END__ linker symbols
+ * refer to page-aligned addresses.
  */
-#pragma weak bl31_plat_enable_mmu
-#pragma weak bl32_plat_enable_mmu
+#define COH_START (unsigned long)(&__COHERENT_RAM_START__)
+#define COH_LIMIT (unsigned long)(&__COHERENT_RAM_END__)
 
-void bl31_plat_enable_mmu(uint32_t flags)
+/*
+ * The following platform functions are all weakly defined. They provide typical
+ * implementations that may be re-used by multiple platforms but may also be
+ * overridden by a platform if required.
+ */
+
+__attribute__((weak)) void tftf_platform_end(void)
 {
-	enable_mmu_el3(flags);
+	/* Placeholder function which should be redefined by each platform */
+}
+
+__attribute__((weak)) void tftf_platform_watchdog_set(void)
+{
+	/* Placeholder function which should be redefined by each platform */
+}
+
+__attribute__((weak)) void tftf_platform_watchdog_reset(void)
+{
+	/* Placeholder function which should be redefined by each platform */
+}
+
+__attribute__((weak)) unsigned int tftf_platform_core_pos_to_mpid(unsigned int core_pos)
+{
+	/* Placeholder function which should be redefined by each platform */
+	return 0;
+}
+
+__attribute__((weak)) void tftf_plat_configure_mmu(void)
+{
+	mmap_add_region(COH_START, COH_START, COH_LIMIT - COH_START,
+		       MT_DEVICE | MT_RW | MT_NS);
+	mmap_add(tftf_platform_get_mmap());
+	init_xlat_tables();
+
+	tftf_plat_enable_mmu();
 }
 
-void bl32_plat_enable_mmu(uint32_t flags)
+__attribute__((weak)) void tftf_plat_enable_mmu(void)
 {
-	enable_mmu_el1(flags);
+	if (IS_IN_EL1())
+		enable_mmu_el1(0);
+	else if (IS_IN_EL2())
+		enable_mmu_el2(0);
+	else
+		panic();
 }