1 files changed, 230 insertions, 0 deletions
diff --git a/libSYS/src/mips/genericStds_mips.cpp b/libSYS/src/mips/genericStds_mips.cpp
new file mode 100644
index 0000000..7e77eee
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+++ b/libSYS/src/mips/genericStds_mips.cpp
@@ -0,0 +1,230 @@
+/**************************  Fraunhofer IIS FDK SysLib  **********************
+
+                        (C) Copyright Fraunhofer IIS (2006)
+                               All Rights Reserved
+
+    Please be advised that this software and/or program delivery is
+    Confidential Information of Fraunhofer and subject to and covered by the
+
+    Fraunhofer IIS Software Evaluation Agreement
+    between Google Inc. and  Fraunhofer
+    effective and in full force since March 1, 2012.
+
+    You may use this software and/or program only under the terms and
+    conditions described in the above mentioned Fraunhofer IIS Software
+    Evaluation Agreement. Any other and/or further use requires a separate agreement.
+
+
+   $Id$
+   Author(s):   Manuel Jander
+   Description:
+
+   This software and/or program is protected by copyright law and international
+   treaties. Any reproduction or distribution of this software and/or program,
+   or any portion of it, may result in severe civil and criminal penalties, and
+   will be prosecuted to the maximum extent possible under law.
+
+******************************************************************************/
+
+#define RESOURCE_scratchBuffer
+#define FUNCTION_FDKprolog
+#define FUNCTION_FDKepilog
+
+#define MIPS_VIRTUAL_START  (0x80000000)
+/* value below is defined in simulator config (MipsMemIntf-{24KE,4KE}.cfg) */
+#define MIPS_SDE_SCRATCHPAD (0x00058000)
+
+//#define MIPS_SRAM_SIZE  (32768)
+#define MIPS_SRAM_SIZE  (4096)
+
+#define MIPS_SCRATCH_SIZE (4096)
+#define DATA_L1_A_SIZE (MIPS_SRAM_SIZE-MIPS_SCRATCH_SIZE)
+
+
+
+
+#ifdef RESOURCE_scratchBuffer
+#define FDK_SCRATCHBUF_SIZE 1024
+static LONG *___scratchBuffer = NULL;
+static LONG *__scratchBuffer = NULL;
+static unsigned char *__pScratchBuffer = NULL;
+#endif
+
+
+#ifdef __linux__
+
+#include <stdio.h>
+#include <sys/mman.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+static int fd;
+static inline void * getSram(void)
+{
+  unsigned long *ptr = NULL;
+
+  /* Open driver */
+  fd = open("/dev/sram", 0);
+  if (fd < 0)
+  {
+    printf("Unable to access sram. Fallback to malloc\n");
+    /* Signal "no sram driver at use". */
+    fd = -1;
+    /* Return malloced pointer (fallback) */
+    return malloc(MIPS_SRAM_SIZE);
+  }
+
+  /* Get memory mapped into CPU (virtual) address space */
+  ptr = (unsigned long *)mmap(NULL, MIPS_SRAM_SIZE, PROT_READ | PROT_WRITE, MAP_PRIVATE, fd, 0);
+  if(ptr == MAP_FAILED)
+  {
+     printf("Unable to access sram. Fallback to malloc\n");
+     /* Give up on the sram driver */
+     close(fd);
+     /* Signal "no sram driver at use". */
+     fd = -1;
+     /* Return malloced pointer (fallback) */
+     ptr = (unsigned long *)malloc(MIPS_SRAM_SIZE);
+  }
+
+
+  /* Return pointer to sram */
+  return (void*)ptr;
+}
+
+static inline void freeSram(void* ptr)
+{
+  /* Check if sram driver is being used. */
+  if (fd == -1)
+  {
+    free(ptr);
+    return;
+  }
+
+  /* Unmap memory */
+  munmap(ptr, MIPS_SRAM_SIZE);
+  /* Close driver */
+  close(fd);
+
+  return;
+}
+
+#elif defined(__SDE_MIPS__)
+
+#include <stdio.h>
+#include <mips/cpu.h>
+
+static int hasISPRAM, hasDSPRAM;
+
+static inline void * getSram(void)
+{
+  void *addr;
+  unsigned int Config;
+
+  Config = mips_getconfig();
+  hasISPRAM = (Config >> 24) & 1;
+  hasDSPRAM = (Config >> 23) & 1;
+
+  FDKprintf("Config ISP/DSP: %d/%d\n", hasISPRAM, hasDSPRAM);
+
+  if (hasDSPRAM) {
+    long paddr, laddr;
+
+    FDKprintf("wrong\n");
+    paddr = MIPS_SDE_SCRATCHPAD;
+    /* Fixed mapping of kseg0: 0x80000000-0x9fffffff virtual => 0x00000000-0x1fffffff physical */
+    laddr = MIPS_VIRTUAL_START + MIPS_SDE_SCRATCHPAD;
+    addr = (void*)(laddr);
+  } else {
+    FDKprintf("ok\n");
+    addr = malloc(MIPS_SRAM_SIZE);
+    FDKprintf("addr %d\n", (int)addr);
+  }
+  return addr;
+}
+static inline void freeSram(void* ptr)
+{
+  if (!hasDSPRAM) {
+    free(ptr);
+  }
+}
+
+#else
+
+static inline void * getSram(void)
+{
+  return malloc(MIPS_SRAM_SIZE);
+}
+static inline void freeSram(void* ptr)
+{
+  free(ptr);
+}
+
+#endif
+
+
+#ifdef FUNCTION_FDKprolog
+void FDKprolog(void)
+{
+   unsigned char *addr;
+
+#ifdef _MIPS_ARCH_MIPS32R2
+   unsigned status;
+   asm volatile("mfc0 %0, $12, 0;\n" : "=r" (status));
+   status |= (1 << 24);
+   asm volatile("mtc0 %0, $12, 0;\n" :: "r" (status));
+#endif
+
+   addr = (unsigned char*)getSram();
+   if (addr == NULL) {
+     FDKprintfErr("SRAM allocation failed ! This is fatal.\n");
+     exit(-1);
+   } else {
+     FDKprintf("SRAM @ 0x%08x, size = 0x%x\n", (unsigned int) addr, MIPS_SRAM_SIZE);
+   }
+
+
+#ifdef RESOURCE_scratchBuffer
+   ___scratchBuffer = (LONG*)(addr + MIPS_SRAM_SIZE - MIPS_SCRATCH_SIZE);
+#endif
+
+   atexit(FDKepilog);
+
+   FDKprolog_generic();
+}
+#endif
+
+#ifdef FUNCTION_FDKepilog
+void FDKepilog(void)
+{
+
+#ifdef _MIPS_ARCH_MIPS32R2
+   unsigned status;
+   asm volatile("mfc0 %0, $12, 0;\n" : "=r" (status));
+           status &= ~(1 << 24);
+   asm volatile("mtc0 %0, $12, 0;\n" :: "r" (status));
+#endif
+
+   FDKepilog_generic();
+}
+#endif
+
+
+#if !defined(__linux__)
+
+#define FUNCTION_FDKclock
+
+#ifndef MIPS_CPU_CLK
+#define MIPS_CPU_CLK 100000000
+#endif
+
+INT FDKclock(void) {
+  INT clk;
+
+  asm volatile ("mfc0 %0,$9 " : "=r" (clk));
+  return clk;
+}
+
+#endif /* !defined(__linux__) */