Firebee/FireBee_SVN
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

modified init_fpga() to honour JTAG configuration. Does not work

Browse Source 
currently and needs support from the TOS side (program not finished yet)
This commit is contained in:
Markus Fröschle
2014-06-22 16:00:49 +00:00
parent d1297a5b0e
commit 8935f0bbc4
5 changed files with 220 additions and 174 deletions
Download Patch File Download Diff File Expand all files Collapse all files

24
BaS_gcc/sys/init_fpga.c
View File

@@ -33,10 +33,16 @@
#define FPGA_DATA0 (1 << 3)
#define FPGA_CONF_DONE (1 << 5)
extern uint8_t _FPGA_FLASH_DATA[];
#define FPGA_FLASH_DATA &_FPGA_FLASH_DATA[0]
extern uint8_t _FPGA_FLASH_DATA_SIZE[];
#define FPGA_FLASH_DATA_SIZE ((uint32_t) &_FPGA_FLASH_DATA_SIZE[0])
extern uint8_t _FPGA_CONFIG[];
#define FPGA_FLASH_DATA &_FPGA_CONFIG[0]
extern uint8_t _FPGA_CONFIG_SIZE[];
#define FPGA_FLASH_DATA_SIZE ((uint32_t) &_FPGA_CONFIG_SIZE[0])
/*
* 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;
void config_gpio_for_fpga_config(void)
{
@@ -78,7 +84,15 @@ bool init_fpga(void)
volatile int32_t time, start, end;
int i;
xprintf("FPGA load config... ");
xprintf("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");
/* reset the flag so that next boot will load config again from flash */
_FPGA_JTAG_LOADED = 0;
return true;
}
start = MCF_SLT0_SCNT;
config_gpio_for_fpga_config();