X-Git-Url: http://www.aleph1.co.uk/gitweb/?p=yaffs2.git;a=blobdiff_plain;f=direct%2Fynorsim.c;fp=direct%2Fynorsim.c;h=0000000000000000000000000000000000000000;hp=0c691a6a58c4418ee377ed4e8d76f16dbce535a0;hb=4a700fe570d217c2c5df87070db7c2652bc0eaaf;hpb=25f6e492e7010f585367a4f6abf4d2e17c5c0e1a

diff --git a/direct/ynorsim.c b/direct/ynorsim.c
deleted file mode 100644
index 0c691a6..0000000
--- a/direct/ynorsim.c
+++ /dev/null
@@ -1,170 +0,0 @@
-
-
-#include "ynorsim.h"
-
-
-
-#include <stdio.h>
-#include <fcntl.h>
-#include <sys/stat.h>
-#include <unistd.h>
-#include <time.h>
-
-#define YNORSIM_FNAME "emfile-nor"
-
-/* Set YNORSIM_BIT_CHANGES to a a value from 1..30 to 
- *simulate bit flipping as the programming happens. 
- * A low value results in faster simulation with less chance of encountering a partially programmed
- * word. 
- */
-   
-//#define YNORSIM_BIT_CHANGES 15
-#define YNORSIM_BIT_CHANGES 2
-
-#if 0
-/* Simulate 32MB of flash in 256k byte blocks.
- * This stuff is x32.
- */
-
-#define YNORSIM_BLOCK_SIZE_U32  (256*1024/4)
-#define YNORSIM_DEV_SIZE_U32	(32*1024 * 1024/4)
-#else
-/* Simulate 8MB of flash in 256k byte blocks.
- * This stuff is x32.
- */
-
-#define YNORSIM_BLOCK_SIZE_U32  (256*1024/4)
-#define YNORSIM_DEV_SIZE_U32	(8*1024 * 1024/4)
-#endif
-
-static __u32 word[YNORSIM_DEV_SIZE_U32];
-
-extern int random_seed;
-extern int simulate_power_failure;
-
-static void NorError(void)
-{
-  printf("Nor error\n");
-  while(1){}
-}
-
-static void ynorsim_SaveImage(void)
-{
-  int h = open(YNORSIM_FNAME, O_RDWR | O_CREAT | O_TRUNC, S_IREAD | S_IWRITE);
-  write(h,word,sizeof(word));
-  close(h);
-}
-
-static void ynorsim_RestoreImage(void)
-{
-  int h = open(YNORSIM_FNAME, O_RDONLY, S_IREAD | S_IWRITE);
-  memset(word,0xFF,sizeof(word));
-  read(h,word,sizeof(word));
-  close(h);
-}
-
-
-static void ynorsim_PowerFail(void)
-{
-  ynorsim_SaveImage();
-  exit(1);
-}
-
-static int initialised = 0;
-static int remaining_ops;
-static int nops_so_far;
-
-int ops_multiplier = 500;
-
-static void ynorsim_MaybePowerFail(void)
-{
-
-   nops_so_far++;
-   
-   
-   remaining_ops--;
-   if(simulate_power_failure &&
-      remaining_ops < 1){
-       printf("Simulated power failure after %d operations\n",nops_so_far);
-    	ynorsim_PowerFail();
-  }
-}
-
-static void ynorsim_Ready(void)
-{
-  if(initialised) 
-    return;
-  srand(random_seed);
-  remaining_ops = 1000000000;
-  remaining_ops = (rand() % 10000) * ops_multiplier * YNORSIM_BIT_CHANGES;
-  ynorsim_RestoreImage();
-}
-
-void ynorsim_Read32(__u32 *addr,__u32 *buf, int nwords)
-{ 
-   while(nwords > 0){
-     *buf = *addr;
-     buf++;
-     addr++;
-     nwords--;
-   }
-}
-
-void ynorsim_WriteOneWord32(__u32 *addr,__u32 val)
-{
-  __u32 tmp;
-  __u32 m;
-  int i;
-
-  tmp = *addr;
-  if(val & ~tmp){
-    // Fail due to trying to change a zero into a 1
-    printf("attempt to set a zero to one (%x)->(%x)\n",tmp,val);
-    NorError();
-  }
-  
-  for(i = 0; i < YNORSIM_BIT_CHANGES; i++){
-    m = 1 << (rand() & 31);
-    if(!(m & val)){
-      tmp &= ~m;
-      *addr = tmp;
-      ynorsim_MaybePowerFail();
-    }
-       
-  }
-  
-  *addr = tmp & val;
-  ynorsim_MaybePowerFail();
-}
-
-void ynorsim_Write32(__u32 *addr, __u32 *buf, int nwords)
-{
-  while(nwords >0){
-    ynorsim_WriteOneWord32(addr,*buf);
-    addr++;
-    buf++;
-    nwords--;
-  }
-}
-
-void ynorsim_EraseBlock(__u32 *addr)
-{
-  /* Todo... bit flipping */
-  memset(addr,0xFF,YNORSIM_BLOCK_SIZE_U32 * 4);
-}
-
-void ynorsim_Initialise(void)
-{
-  ynorsim_Ready();
-}
-
-void ynorsim_Shutdown(void)
-{
-  ynorsim_SaveImage();
-  initialised=0;
-}
-
-__u32 *ynorsim_GetBase(void)
-{
-  return word;
-}