/*****************************************************************************
 * MODIFICATION HISTORY:
 *
 * Ver   Who  Date     Changes
 * ----- ---- -------- ---------------------------------------------------
 * 3.02a sdm  05/30/11 Added Xuint64 typedef and XUINT64_MSW/XUINT64_LSW macros
 * 3.02a sdm  06/27/11 Added INST_SYNC and DATA_SYNC macros for all the CPUs
 * 3.02a sdm  07/07/11 Updated ppc440 boot.S to set guarded bit for all but
 *                     cacheable regions
 *                     Update ppc440/xil_cache.c to use CACHEABLE_REGION_MASK
 *                     generated by the cpu driver, for enabling caches
 * 3.02a sdm  07/08/11 Updated microblaze cache flush APIs based on write-back/
 *                     write-thru caches
 * 3.03a sdm  08/20/11 Updated the tag/data RAM latency values for L2CC
 *		       Updated the MMU table to mark OCM in high address space
 *		       as inner cacheable and reserved space as Invalid
 * 3.03a sdm  08/20/11 Changes to support FreeRTOS
 *		       Updated the MMU table to mark upper half of the DDR as
 *		       non-cacheable
 *		       Setup supervisor and abort mode stacks
 *		       Do not initialize/enable L2CC in case of AMP
 *		       Initialize UART1 for 9600bps in case of AMP
 * 3.03a sdm  08/27/11 Setup abort and supervisor mode stacks and don't init SMC
 *		       in case of AMP
 * 3.03a sdm  09/14/11 Added code for performance monitor and L2CC event
 *		       counters
 * 3.03a sdm  11/08/11 Updated microblaze xil_cache.h file to include
 *		       xparameters.h file for CR630532 -  Xil_DCacheFlush()/
 *		       Xil_DCacheFlushRange() functions in standalone BSP v3_02a
 *		       for MicroBlaze will invalidate data in the cache instead
 *		       of flushing it for writeback caches
 * 3.04a sdm  11/21/11 Updated to initialize stdio device for 115200bps, for PS7
 * 3.04a sdm  01/02/12 Updated to clear cp15 regs with unknown reset values
 *		       Remove redundant dsb/dmb instructions in cache maintenance
 *		       APIs
 *		       Remove redundant dsb in mcr instruction
 * 3.04a sdm  01/13/12 Updated MMU table to mark DDR memory as Shareable
 * 3.05a sdm  02/02/12 Removed some of the defines as they are being generated through
 *                     driver tcl in xparameters.h. Update the gcc/translationtable.s
 *                     for the QSPI complete address range - DT644567
 *                     Removed profile directory for armcc compiler and changed
 *                     profiling setting to false in standalone_v2_1_0.tcl file
 *                     Deleting boot.S file after preprocessing for armcc compiler
 * 3.05a asa  03/11/12 Updated the function Xil_EnableMMU in file xil_mmu.c to
 *		       invalidate the caches before enabling back the MMU and
 *		       D cache.
 * 3.05a asa  04/15/12 Updated the function Xil_SetTlbAttributes in file
 *		       xil_mmu.c. Now we invalidate UTLB, Branch predictor
 *		       array, flush the D-cache before changing the attributes
 *		       in translation table. The user need not call Xil_DisableMMU
 *		       before calling Xil_SetTlbAttributes.
 * 3.06a asa/ 06/17/12 Removed the UART initialization for Zynq. For PEEP, the UART
 *	 sgd	       initialization is present. Changes for this were done in
 *		       uart.c and xil-crt0.s.
 *		       Made changes in xil_io.c to use volatile pointers.
 *		       Made changes in xil_mmu.c to correct the function
 *		       Xil_SetTlbAttributes.
 *		       Changes are made xil-crt0.s to initialize the static
 *		       C++ constructors.
 *		       Changes are made in boot.s, to fix the TTBR settings,
 *		       correct the L2 Cache Auxiliary register settings, L2 cache
 *		       latency settings.
 * 3.07a asa/ 07/16/12 Made changes in cortexa9/xtime_l.c, xtime_l.h, sleep.c
 *	 sgd	       usleep.c to use global timer intstead of CP15.
 *		       Made changes in cortexa9/gcc/translation_table.s to map
 *		       the peripheral devices as shareable device memory.
 *		       Made changes in cortexa9/gcc/xil-crt0.s to initialize
 *		       the global timer.
 *		       Made changes in cortexa9/armcc/boot.S to initialize
 *		       the global timer.
 *		       Made changes in cortexa9/armcc/translation_table.s to
 *		       map the peripheral devices as shareable device memory.
 *		       Made changes in cortexa9/gcc/boot.S to optimize the
 *		       L2 cache settings. Changes the section properties for
 *		       ".mmu_tbl" and ".boot" sections in cortexa9/gcc/boot.S
 *			and cortexa9/gcc/translation_table.S.
 *		       Made changes in cortexa9/xil_cache.c to change the
 *		       cache invalidation order.
 * 3.07a asa  08/17/12 Made changes across files for Cortexa9 to remove
 *		       compilation/linking issues for C++ compiler.
 *		       Made changes in mb_interface.h to remove compilation/
 *		       linking issues for C++ compiler.
 *		       Added macros for swapb and swaph microblaze instructions
 *		       mb_interface.h
 *		       Remove barrier usage (SYNCHRONIZE_IO) from xil_io.c
 *		       for CortexA9.
 * 3.07a asa  08/30/12 Updated for CR 675636 to provide the L2 Base Address
 * 3.07a asa  08/31/12 Added xil_printf.h include
 * 3.07a sgd  09/18/12 Corrected the L2 cache enable settings
 *				Corrected L2 cache sequence disable sequence
 * 3.07a sgd  10/19/12 SMC NOR and SRAM initialization with compiler option
 * 3.09a asa  01/25/13 Updated to push and pop neon registers into stack for
 *		       irq/fiq handling.
 *		       Relocated COUNTS_PER_SECOND from sleep.c to xtime_l.h. This
 *		       fixes the CR #692094.
 * 3.09a sgd  02/14/13 Fix for CRs 697094 (SI#687034) and 675552.
 * 3.10a srt  04/18/13 Implemented ARM Erratas. 
 *		       Cortex A9 Errata - 742230, 743622, 775420, 794073
 *		       L2Cache PL310 Errata - 588369, 727915, 759370
 *		       Please refer to file 'xil_errata.h' for errata
 *		       description.
 * 3.10a asa  05/04/13 Added support for L2 cache in MicroBlaze BSP. The older
 *		       cache APIs were corresponding to only Layer 1 cache 
 *		       memories. New APIs were now added and the existing cache
 *		       related APIs were changed to provide a uniform interface
 *		       to flush/invalidate/enable/disable the complete cache
 *		       system which includes both L1 and L2 caches. The changes
 *		       for these were done in:
 *		       src/microblaze/xil_cache.c and src/microblaze/xil_cache.h
 *		       files.
 *		       Four new files were added for supporting L2 cache. They are:
 *		       microblaze_flush_cache_ext.S-> Flushes L2 cache
 *		       microblaze_flush_cache_ext_range.S -> Flushes a range of
 *		       memory in L2 cache.
 *		       microblaze_invalidate_cache_ext.S-> Invalidates L2 cache
 *		       microblaze_invalidate_cache_ext_range -> Invalidates a
 *		       range of memory in L2 cache.
 *		       These changes are done to implement PR #697214.	
 * 3.10a  asa 05/13/13 Modified cache disable APIs at src/cortexa9/xil_cache.c to
 *		       fix the CR #706464. L2 cache disabling happens independent
 *		       of L1 data cache disable operation. Changes are done in the
 *		       same file in cache handling APIs to do a L2 cache sync 
 *		       (poll reg7_?cache_?sync). This fixes CR #700542.		       
 * 3.10a asa  05/20/13 Added API/Macros for enabling and disabling nested 
 *		       interrupts for ARM. These are done to fix the CR#699680.
 * 3.10a srt  05/20/13 Made changes in cache maintenance APIs to do a proper cach
 *		       sync operation. This fixes the CR# 716781.
 * 3.11a asa  09/07/13 Updated armcc specific BSP files to have proper support
 *		       for armcc toolchain.
 *		       Modified asm_vectors.S (gcc) and asm_vectors.s (armcc) to
 *		       fix issues related to NEON context saving. The assembly
 *		       routines for IRQ and FIQ handling are modified.
 *		       Deprecated the older BSP (3.10a).
 * 3.11a asa  09/22/13 Fix for CR#732704. Cache APIs are modified to avoid 
 *		       various potential issues. Made changes in the function
 *		       Xil_SetAttributes in file xil_mmu.c.
 * 3.11a asa  09/23/13 Added files xil_misc_psreset_api.c and xil_misc_psreset_api.h
 *		       in src\cortexa9 and src\microblaze folders. 
 * 3.11a asa  09/28/13 Modified the cache APIs (src\cortexa9) to fix handling of
 *		       L2 cache sync operation and to fix issues around complete
 *		       L2 cache flush/invalidation by ways.
 * 3.12a asa  10/22/13 Modified the files xpseudo_asm_rvct.c and xpseudo_asm_rvct.h
 *		       to fix linking issues with armcc/DS-5. Modified the armcc
 *		       makefile to fix issues.
 * 3.12a asa  11/15/13 Fix for CR#754800. It fixes issues around profiling for MB.
 * 4.0   hk   12/13/13 Added check for STDOUT_BASEADDRESS where outbyte is used. 
 * 4.0 	 pkp  22/01/14 Modified return addresses for interrupt handlers (DataAbortHandler
 *		       and SWIHandler) in asm_vector.S (src\cortexa9\gcc\ and 
 *		       src\cortexa9\armcc\) to fix CR#767251
 * 4.0	 pkp  24/01/14 Modified cache APIs (Xil_DCacheInvalidateRange and 
 *		       Xil_L1DCacheInvalidate) in xil_cache.c (src\cortexa9) to fix the bugs.
 *		       Few cache lines were missed to invalidate when unaligned address
 *		       invalidation was accommodated in Xil_DCacheInvalidateRange. 
 *		       In Xil_L1DCacheInvalidate, while invalidating all L1D cache
 *		       stack memory (which contains return address) was invalidated. So
 *		       stack memory is flushed first and then L1D cache is invalidated.
 *		       This is done to fix CR #763829
 * 4.0 adk   22/02/2014 Fixed the CR:775379 removed unnecessay _t(unit32_t etc) from 
 *			mblaze_nt_types.h file and replace uint32_t with u32 in the 
 *			profile_hist.c to fix the above CR. 
 * 4.1 bss   04/14/14  Updated driver tcl to remove _interrupt_handler.o from libgloss.a
 * 		       instead of libxil.a and added prototypes for 
 *		       microblaze_invalidate_cache_ext and microblaze_flush_cache_ext in
 *		       mb_interface.h
 * 4.1 hk    04/18/14  Add sleep function.
 * 4.1 asa   04/21/14  Fix for CR#764881. Added support for msrset and msrclr. Renamed
 *		       some of the *.s files inMB BSP source to *.S.
 * 4.1 asa   04/28/14  Fix for CR#772280. Made changes in file cortexa9/gcc/read.c.
 * 4.1 bss   04/29/14  Modified driver tcl to use libxil.a if libgloss.a does not exist
 *			CR#794205
 * 4.1 asa   05/09/14  Fix for CR#798230. Made changes in cortexa9/xil_cache.c and
 *		       common/xil_testcache.c
 *	               Fix for CR#764881.
 * 4.1 srt   06/27/14  Remove '#undef DEBUG' from src/common/xdebug.h, which allows to
 *                     output the DEBUG logs when -DDEBUG flag is enabled in BSP.
 * 4.2 pkp   06/27/14  Added support for IAR compiler in src/cortexa9/iccarm. 
 *		       Also added explanatory notes in cortexa9/xil_cache.c for CR#785243.
 * 4.2 pkp   06/19/14  Asynchronous abort has been enabled into cortexa9/gcc/boot.s and
 *		       cortexa9/armcc/boot.s. Added default exception handlers for data 
 *		       abort and prefetch abort using handlers called
 *		       DataAbortHandler and PrefetchAbortHandler respectively in 
 *		       cortexa9/xil_exception.c to fix CR#802862.
 * 4.2 pkp   06/30/14  MakeFile for cortexa9/armcc has been changed to fixes the 
 *		       issue of improper linking of translation_table.s 
 * 4.2 pkp   07/04/14  added weak attribute for the function in BSP which are also present
 *		       in tool chain to avoid conflicts into some special cases
 * 4.2 pkp   07/21/14  Corrected reset value of event counter in function 
 *		       Xpm_ResetEventCounters in src/cortexa9/xpm_counter.c to fix CR#796275
 * 4.2 pkp   07/21/14  Included xil_types.h file in xil_mmu.h which had contained a function 
 * 		       containing type def u32 defined in xil_types.g to resolve issue of 
 *		       CR#805869
 * 4.2 pkp   08/04/14  Removed unimplemented nanosleep routine from cortexa9/usleep.c as 
 *		       it is not possible to generate timer in nanosecond due to limited
 *		       cpu frequency
 * 4.2 pkp   08/04/14  Removed PEEP board related code which contained initialization of 
 *		       uart, smc nor and sram from cortexa9/gcc/xil-crt0.s and armcc/boot.s
 *		       and iccarm/boot.s. Also uart.c and smc.c have been removed. Also 
 *		       removed function definition of XSmc_NorInit and XSmc_NorInit from
 *		       cortexa9/smc.h
 * 4.2 bss   08/11/14  Added microblaze_flush_cache_ext_range and microblaze_invalidate_
 *		       cache_ext_range declarations in mb_interface.h CR#783821.
 *		       Modified profile_mcount_mb.S to fix CR#808412.
 * 4.2 pkp   08/21/14  modified makefile of iccarm for proper linking of objectfiles in
 *		       cortexa9/iccarm to fix CR#816701
 * 4.2 pkp   09/02/14  modified translation table entries in cortexa9/gcc/translation_table.s,
 *		       armcc/translation_table.s and iccarm/translation_table.s
 *		       to properly defined reserved entries according to address map for
 *		       fixing CR#820146
 * 4.2 pkp   09/11/14  modified translation table entries in cortexa9/iccarm/translation_table.s
 *		       and  cortexa9/armcc/translation_table.s to resolve compilation
 *		       error for solving CR#822897
******************************************************************************************/
