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

disabled caches for tests to work reliably

Browse Source
This commit is contained in:
Markus Fröschle
2014-12-27 16:49:57 +00:00
parent 5cb3becb63
commit 6fcd8c2cf2
1 changed files with 35 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

44
BaS_gcc/tos/vmem_test/sources/vmem_test.c
View File

@@ -16,9 +16,14 @@
#define NOP() __asm__ __volatile__("nop\n\t" : : : "memory")
#define SYSCLK 132000
long bas_start = 0xe0000000;
extern volatile uint32_t _VRAM[];
volatile int32_t time, start, end;
int i;
void do_tests(void)
{
/* read out shifter registers */
@@ -50,7 +55,7 @@ void do_tests(void)
xprintf("set Firebee clut\r\n");
int i;
long i;
for (i = 0; i < 0x400; i++)
{
* (unsigned char *) (0xf0000000 + i) = (uint8_t) i;
@@ -61,17 +66,31 @@ void do_tests(void)
xprintf("try to access Firebee FPGA memory\r\n");
xprintf("read\r\n");
hexdump(_VRAM, 512);
start = MCF_SLT0_SCNT;
hexdump(_VRAM, 64);
end = MCF_SLT0_SCNT;
time = (start - end) / (SYSCLK / 1000) / 1000;
xprintf("finished (took %f seconds).\r\n", time / 1000.0);
xprintf("write\r\n");
for (i = 0; i < 512; i++)
start = MCF_SLT0_SCNT;
for (i = 0; i < 64; i++)
{
_VRAM[i] = (uint32_t) i;
((uint8_t *) _VRAM)[i] = (uint32_t) i;
}
end = MCF_SLT0_SCNT;
time = (start - end) / (SYSCLK / 1000) / 1000;
xprintf("finished (took %f seconds).\r\n", time / 1000.0);
xprintf("read\r\n");
hexdump(_VRAM, 512);
start = MCF_SLT0_SCNT;
hexdump(_VRAM, 64);
end = MCF_SLT0_SCNT;
time = (start - end) / (SYSCLK / 1000) / 1000;
xprintf("finished (took %f seconds).\r\n", time / 1000.0);
}
/*
@@ -171,7 +190,7 @@ void init_pll(void)
void wait_for_jtag(void)
{
int i;
long i;
/* set supervisor stack to end of SRAM1 */
__asm__ __volatile__ (
@@ -216,7 +235,7 @@ void wait_for_jtag(void)
/* wait */
xprintf("wait a little to let things settle...\r\n");
for (i = 0; i < 1000000; i++);
for (i = 0; i < 100000L; i++);
/* initialize FPGA PLL's */
init_pll();
@@ -224,11 +243,18 @@ void wait_for_jtag(void)
/* initialize DDR RAM controller */
init_video_ddr();
xprintf("disable caches\r\n");
__asm__ __volatile(
"move.l #0x01000000,d0 \r\n"
"movec d0,CACR \r\n"
: /* no output */
: /* no input */
: "d0", "memory");
/* begin of tests */
do_tests();
xprintf("wait a little to let things settle...\r\n");
for (i = 0; i < 1000000; i++);
for (i = 0; i < 100000L; i++);
xprintf("INFO: endless loop now. Press reset to reboot\r\n");
while (1)