13 #define YNORSIM_FNAME "ynorsimdata"
15 /* Set YNORSIM_BIT_CHANGES to a a value from 1..30 to
16 *simulate bit flipping as the programming happens.
17 * A low value results in faster simulation with less chance of encountering a partially programmed
21 //#define YNORSIM_BIT_CHANGES 15
22 #define YNORSIM_BIT_CHANGES 1
25 /* Simulate 32MB of flash in 256k byte blocks.
29 #define YNORSIM_BLOCK_SIZE_U32 (256*1024/4)
30 #define YNORSIM_DEV_SIZE_U32 (32*1024 * 1024/4)
32 /* Simulate 8MB of flash in 256k byte blocks.
36 #define YNORSIM_BLOCK_SIZE_U32 (256*1024/4)
37 #define YNORSIM_DEV_SIZE_U32 (8*1024 * 1024/4)
40 static __u32 word[YNORSIM_DEV_SIZE_U32];
43 static void NorError(void)
45 printf("Nor error\n");
49 static void ynorsim_SaveImage(void)
51 int h = open(YNORSIM_FNAME, O_RDWR | O_CREAT | O_TRUNC, S_IREAD | S_IWRITE);
52 write(h,word,sizeof(word));
56 static void ynorsim_RestoreImage(void)
58 int h = open(YNORSIM_FNAME, O_RDONLY, S_IREAD | S_IWRITE);
59 memset(word,0xFF,sizeof(word));
60 read(h,word,sizeof(word));
65 static void ynorsim_PowerFail(void)
71 static int initialised = 0;
72 static int remaining_ops;
73 static int nops_so_far;
75 static void ynorsim_MaybePowerFail(void)
82 if(remaining_ops < 1){
83 printf("Simulated power failure after %d operations\n",nops_so_far);
88 static void ynorsim_Ready(void)
93 remaining_ops = 1000000000;
94 remaining_ops = (rand() % 10000) * 3000 * YNORSIM_BIT_CHANGES;
95 ynorsim_RestoreImage();
98 void ynorsim_Read32(__u32 *addr,__u32 *buf, int nwords)
108 void ynorsim_WriteOneWord32(__u32 *addr,__u32 val)
116 // Fail due to trying to change a zero into a 1
117 printf("attempt to set a zero to one (%x)->(%x)\n",tmp,val);
121 for(i = 0; i < YNORSIM_BIT_CHANGES; i++){
122 m = 1 << (rand() & 31);
126 ynorsim_MaybePowerFail();
132 ynorsim_MaybePowerFail();
135 void ynorsim_Write32(__u32 *addr, __u32 *buf, int nwords)
138 ynorsim_WriteOneWord32(addr,*buf);
145 void ynorsim_EraseBlock(__u32 *addr)
147 /* Todo... bit flipping */
148 memset(addr,0xFF,YNORSIM_BLOCK_SIZE_U32 * 4);
151 void ynorsim_Initialise(void)
156 void ynorsim_Shutdown(void)
162 __u32 *ynorsim_GetBase(void)