Other Parts Discussed in Thread: AM3359
Tool/software: Linux
We are working on a board containing AM3359 processor.
SDK we are using is ti-processor-sdk-linux-am335x-evm-05.00.00.15.
Our customer wants to see the throughput of the data transfer between processor (AM3359) and FPGA connected through 8 GPMC lines using EDMA
As of now we've created a project in Code Composer Studio ( CCS ) with a GEL file and a C program & we are able to send data to FPGA through these 8 GPMC lines.
Right now we didn't insert any SD Card(i.e. Processor is not booted up).
Using JTAG & CCS only we did it.
Now we are not clear about how to proceed further in this regard on how to associate this gpmc program with EDMA protocol in Linux-SDK to send data to FPGA.
All we want now is to implement GPMC_EDMA data transfer program as per the below flow.
Processor booted ----> Run GPMC_EDMA Data transfer program ----> Complete data transfer ----> Calculate throughput.
Here is my code for transferring data to FPGA through 8 GPMC lines.
#include <stdio.h>
#define GPMC_BASE 0x50000000
#define GPMC_SYSCONFIG *( volatile unsigned int * )(GPMC_BASE + 0x010)
#define GPMC_SYSSTATUS *( volatile unsigned int * )(GPMC_BASE + 0x014)
#define GPMC_CONFIG *( volatile unsigned int * )(GPMC_BASE + 0x050)
#define GPMC_STATUS *( volatile unsigned int * )(GPMC_BASE + 0x054)
//Following are config registers for CS_0
#define GPMC_CONFIG1_0 *( volatile unsigned int * )(GPMC_BASE + 0x060)
#define GPMC_CONFIG2_0 *( volatile unsigned int * )(GPMC_BASE + 0x064) //CS settings
#define GPMC_CONFIG3_0 *( volatile unsigned int * )(GPMC_BASE + 0x068) //ADV settings
#define GPMC_CONFIG4_0 *( volatile unsigned int * )(GPMC_BASE + 0x06C) //OE settings
#define GPMC_CONFIG5_0 *( volatile unsigned int * )(GPMC_BASE + 0x070) //
#define GPMC_CONFIG6_0 *( volatile unsigned int * )(GPMC_BASE + 0x074) //
#define GPMC_CONFIG7_0 *( volatile unsigned int * )(GPMC_BASE + 0x078) //
#define PRCM_BASE 0x44E00000
#define CM_PER_GPMC_CLKCTRL *( volatile unsigned int * )(PRCM_BASE + 0x030)
#define BUF_SIZE 10
int main(void)
{
unsigned int i,j,k;
unsigned int buf[BUF_SIZE];
for(i=0;i<BUF_SIZE;i++){
buf[i]=i+1;
}
printf("Test GPMC memory Async 8 bit\n");
//CM_PER_GPMC_CLKCTRL = 0x2;
i = GPMC_CONFIG;
i = i | 2;
//GPMC_CONFIG = i; // We are not using any address bits.
//GPMC_CONFIG1_0 = 0x13;
GPMC_CONFIG2_0 = 0x61F10;//0x1F1F1F; // Highest delay - optimize this for speed.
GPMC_CONFIG3_0 = 0x77011F71;//0x771F1F7F; // Highest delay - optimize this for speed.
GPMC_CONFIG4_0 = 0x0501E77F;//0x1F0FE77F; // Highest delay - optimize this for speed.
GPMC_CONFIG5_0 = 0xF1F061F;//0xF1F1F1F; // Highest delay - optimize this for speed.
GPMC_CONFIG6_0 = 0x1F70F0F;//0x1F70F0F; // Highest delay - optimize this for speed.
GPMC_CONFIG7_0 = 0xF48; // CS0 starts at 0x08000000 and size is 16MB. First 0xFFFFF not available
#if 0
for(i=0; i < 1024; i+=2){
j = (0x08000000) ; //+i);
k = *(unsigned int *)j;
printf("0x%X\n", k );
}
#endif
int t=0;
while(1){
//count++;
// write to the same location - for oscilloscope probe of signals.
//printf("writing 0's\n");
//*(unsigned int *)(0x08000000) = 0x0;
printf("Sent %d bytes\n",BUF_SIZE);
for(i=0;i<BUF_SIZE;i++){
*(unsigned int *)(0x08000000) = buf[i];
}
//*(unsigned int *)(0x08000000) = buf[1];
/*if(t==0){
//*(unsigned int *)(0x08000000) = 0xA5;
*(unsigned int *)(0x08000000) = count;
t=1;
}
else if(t==1){
//*(unsigned int *)(0x08000000) = 0x5A;
*(unsigned int *)(0x08000000) = count;
t=0;
}*/
}
return 0;
}
Someone kindly help me to proceed further as we have a severe time restriction and also we are new to this one.
Thanks & Regards
Vamsi
