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do first tests with FPGA config. SDRAM doesn't seem to work, reading and writing of Firebee CLUT does work, hovever.

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This commit is contained in:
Markus Fröschle
2014-12-26 12:31:44 +00:00
parent 6ecdcbb3d1
commit aea1a66956
3 changed files with 386 additions and 361 deletions
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65
BaS_gcc/tos/vmem_test/sources/vmem_test.c
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@@ -7,11 +7,6 @@
#include "MCF5475.h"
#include "driver_vec.h"
extern long _FPGA_JTAG_LOADED;
extern long _FPGA_JTAG_VALID;
#define VALID_JTAG 0xaffeaffe
#define FPGA_CONFIG (1 << 2)
#define FPGA_CONF_DONE (1 << 5)
@@ -22,8 +17,47 @@ extern long _FPGA_JTAG_VALID;
#define NOP() __asm__ __volatile__("nop\n\t" : : : "memory")
long bas_start = 0xe0000000;
volatile uint32_t *_VRAM = (uint32_t *) 0x60000000;
volatile uint32_t *_VRAM = (uint32_t *) 0x40000000;
void do_tests(void)
{
/* read out shifter registers */
unsigned char * _vmem_hi = (unsigned char *) 0xffff8201;
unsigned char * _vmem_mid = (unsigned char *) 0xffff8203;
unsigned char * _vmem_lo = (unsigned char *) 0xffff820d;
xprintf("vmem_hi = %x\r\n", *_vmem_hi);
xprintf("vmem_mid = %x\r\n", *_vmem_mid);
xprintf("vmem_lo = %x\r\n", *_vmem_lo);
/* try to write to them */
xprintf("trying to write to _vbas\r\n");
*_vmem_hi = 0xd0;
*_vmem_mid = 0x00;
*_vmem_lo = 0x00;
xprintf("read back values\r\n");
xprintf("vmem_hi = %x\r\n", *_vmem_hi);
xprintf("vmem_mid = %x\r\n", *_vmem_mid);
xprintf("vmem_lo = %x\r\n", *_vmem_lo);
xprintf("read Firebee clut\r\n");
hexdump((uint8_t *) 0xf0000000, 0x400);
xprintf("set Firebee clut\r\n");
int i;
for (i = 0; i < 0x400; i++)
{
* (unsigned char *) (0xf0000000 + i) = (uint8_t) i;
}
hexdump((uint8_t *) 0xf0000000, 0x400);
}
void wait_for_jtag(void)
{
@@ -69,29 +103,20 @@ void wait_for_jtag(void)
while (!(MCF_GPIO_PPDSDR_FEC1L & FPGA_CONF_DONE)); /* wait for JTAG config load finished */
xprintf("JTAG configuration finished.\r\n");
_FPGA_JTAG_LOADED = 1; /* indicate jtag loaded FPGA config to BaS */
_FPGA_JTAG_VALID = VALID_JTAG; /* set magic word to indicate _FPGA_JTAG_LOADED is valid */
/* wait */
xprintf("wait a little to let things settle...\r\n");
for (i = 0; i < 10000000; i++);
xprintf("write byte data to FPGA memory\r\n");
for (i = 0; i < 512; i++)
{
_VRAM[i] = i;
}
hexdump((uint8_t *) _VRAM, 512);
/* begin of tests */
do_tests();
xprintf("wait a little to let things settle...\r\n");
for (i = 0; i < 10000000; i++);
__asm__ __volatile__(
" jmp (%[bas_start])\n\t"
: /* no output */
: [bas_start] "a" (bas_start)
: /* clobber not needed */
);
xprintf("INFO: endless loop now. Press reset to reboot\r\n");
while (1)
;
}
int main(int argc, char *argv[])