129 lines
2.8 KiB
C
129 lines
2.8 KiB
C
#include <gint/std/stdio.h>
|
|
#include <gint/display.h>
|
|
#include <gint/keyboard.h>
|
|
|
|
#include <gintctl/util.h>
|
|
#include <gintctl/gint.h>
|
|
|
|
static int writable(uint8_t volatile *mem)
|
|
{
|
|
int save = *mem;
|
|
*mem = save ^ 0xff;
|
|
|
|
/* Read the written value and restore the pointed byte */
|
|
int measured = *mem;
|
|
*mem = save;
|
|
|
|
/* The address is writable iff we succeeded in storing ~save */
|
|
return (measured == (save ^ 0xff));
|
|
}
|
|
|
|
static int same_location(uint8_t volatile *m1, uint8_t volatile *m2)
|
|
{
|
|
uint8_t s1=*m1, s2=*m2;
|
|
|
|
*m1 = s1 ^ 0xf0;
|
|
int equal1 = (*m2 == *m1);
|
|
|
|
*m1 = s1 ^ 0x0f;
|
|
int equal2 = (*m2 == *m1);
|
|
|
|
*m1 = s1 ^ 0xff;
|
|
int equal3 = (*m2 == *m1);
|
|
|
|
*m1 = s1;
|
|
*m2 = s2;
|
|
|
|
return equal1 && equal2 && equal3;
|
|
}
|
|
|
|
static uint32_t region_size(uint8_t volatile *mem, int *reason)
|
|
{
|
|
uint32_t size = 0;
|
|
|
|
while(size <= 16384)
|
|
{
|
|
if(!writable(mem+size))
|
|
{
|
|
*reason = 1;
|
|
break;
|
|
}
|
|
if(size > 0 && same_location(mem, mem+size))
|
|
{
|
|
*reason = 2;
|
|
break;
|
|
}
|
|
size++;
|
|
}
|
|
|
|
return size;
|
|
}
|
|
|
|
/* gintctl_gint_ram(): Determine the size of some memory areas */
|
|
void gintctl_gint_ram(void)
|
|
{
|
|
uint8_t *ILRAM = (void *)0xe5200000;
|
|
uint8_t *XRAM = (void *)0xe5007000;
|
|
uint8_t *YRAM = (void *)0xe5017000;
|
|
uint8_t *MERAM = (void *)0xe8080000;
|
|
|
|
/* Size of these sections */
|
|
uint32_t IL=0, X=0, Y=0, ME=0;
|
|
/* Reason why the region stops (1=not writable, 2=wraps around) */
|
|
int ILr=0, Xr=0, Yr=0, MEr=0;
|
|
|
|
GUNUSED char const *reasons[] = {
|
|
"Not tested yet",
|
|
"Not writable past %d bytes",
|
|
"Wraps around after %d bytes",
|
|
};
|
|
|
|
int key = 0;
|
|
while(key != KEY_EXIT)
|
|
{
|
|
dclear(C_WHITE);
|
|
|
|
#ifdef FX9860G
|
|
row_print(1, 1, "On-chip memory");
|
|
|
|
row_print(3, 2, "ILRAM: %d bytes", IL);
|
|
row_print(4, 2, "XRAM: %d bytes", X);
|
|
row_print(5, 2, "YRAM: %d bytes", Y);
|
|
row_print(6, 2, "MERAM: %d bytes", ME);
|
|
|
|
extern image_t img_opt_gint_ram;
|
|
dimage(0, 56, &img_opt_gint_ram);
|
|
#endif
|
|
|
|
#ifdef FXCG50
|
|
row_title("On-chip memory discovery");
|
|
|
|
row_print(1, 1, "This program measures the size of on-chip");
|
|
row_print(2, 1, "memory sections by checking how far it can "
|
|
"write.");
|
|
|
|
dprint(6, 78, C_BLACK, C_NONE, "ILRAM:");
|
|
dprint(6, 92, C_BLACK, C_NONE, "XRAM:");
|
|
dprint(6, 106, C_BLACK, C_NONE, "YRAM:");
|
|
dprint(6, 120, C_BLACK, C_NONE, "MERAM:");
|
|
dprint(61, 78, C_BLACK, C_NONE, reasons[ILr], IL);
|
|
dprint(61, 92, C_BLACK, C_NONE, reasons[Xr], X);
|
|
dprint(61, 106, C_BLACK, C_NONE, reasons[Yr], Y);
|
|
dprint(61, 120, C_BLACK, C_NONE, reasons[MEr], ME);
|
|
|
|
fkey_button(1, "ILRAM");
|
|
fkey_button(2, "XRAM");
|
|
fkey_button(3, "YRAM");
|
|
fkey_button(4, "MERAM");
|
|
#endif
|
|
|
|
dupdate();
|
|
|
|
key = getkey().key;
|
|
if(key == KEY_F1) IL = region_size(ILRAM, &ILr);
|
|
if(key == KEY_F2) X = region_size(XRAM, &Xr);
|
|
if(key == KEY_F3) Y = region_size(YRAM, &Yr);
|
|
if(key == KEY_F4) ME = region_size(MERAM, &MEr);
|
|
}
|
|
}
|