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simplified pll initialization

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This commit is contained in:
Markus Fröschle
2014-08-08 16:13:14 +00:00
parent 1e471ec8cd
commit bd14381192
2 changed files with 86 additions and 5 deletions
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13
sys/init_fpga.c
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@@ -27,6 +27,13 @@
#include "bas_printf.h"
#include "wait.h"
#define FPGA_DEBUG
#if defined(FPGA_DEBUG)
#define dbg(format, arg...) do { xprintf("DEBUG: %s(): " format, __FUNCTION__, ##arg); } while (0)
#else
#define dbg(format, arg...) do { ; } while (0)
#endif
#define FPGA_STATUS (1 << 0)
#define FPGA_CLOCK (1 << 1)
#define FPGA_CONFIG (1 << 2)
@@ -42,7 +49,7 @@ extern uint8_t _FPGA_CONFIG_SIZE[];
* flag located in processor SRAM1 that indicates that the FPGA configuration has
* been loaded through JTAG. init_fpga() will honour this and not overwrite config.
*/
extern int32_t _FPGA_JTAG_LOADED;
extern bool _FPGA_JTAG_LOADED;
void config_gpio_for_fpga_config(void)
{
@@ -84,10 +91,10 @@ bool init_fpga(void)
volatile int32_t time, start, end;
int i;
xprintf("FPGA load config (_FPGA_JTAG_LOADED = %x)...", _FPGA_JTAG_LOADED);
dbg("FPGA load config (_FPGA_JTAG_LOADED = %x)...", _FPGA_JTAG_LOADED);
if (_FPGA_JTAG_LOADED == 1)
{
xprintf("detected _FPGA_JTAG_LOADED flag. Not overwriting FPGA config.\r\n");
dbg("detected _FPGA_JTAG_LOADED flag. Not overwriting FPGA config.\r\n");
/* reset the flag so that next boot will load config again from flash */
_FPGA_JTAG_LOADED = 0;