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#include <stdio.h>
struct gfx_hw_id
{
unsigned patch : 8;
unsigned minor : 8;
unsigned major : 8;
unsigned rsvd : 8;
};
struct gfx_fw_id
{
unsigned build : 10;
unsigned day : 5;
unsigned month : 4;
unsigned year : 12;
unsigned rsvd : 1;
};
#define GFX_CTRL_BASE 0x20000000
#define GFX_CTRL_MAGIC (*(volatile unsigned *)(GFX_CTRL_BASE + 0x00))
#define GFX_CTRL_HW_ID (*(volatile struct gfx_hw_id *)(GFX_CTRL_BASE + 0x04))
#define GFX_CTRL_FW_ID (*(volatile struct gfx_fw_id *)(GFX_CTRL_BASE + 0x08))
#define GFX_CTRL_HOSTIF_REV (*(volatile unsigned *)(GFX_CTRL_BASE + 0x0c))
#define GFX_MAGIC_ID 0x4a7a7b0c
int main()
{
printf("gfx: probing 0x%08x\n", GFX_CTRL_BASE);
unsigned magic = GFX_CTRL_MAGIC;
printf("gfx: magic=0x%08x\n", magic);
if (magic != GFX_MAGIC_ID)
printf("gfx: bad magic, probe failed\n");
printf("gfx: magic ok\n");
struct gfx_hw_id hw_id = GFX_CTRL_HW_ID;
struct gfx_fw_id fw_id = GFX_CTRL_FW_ID;
unsigned hostif_rev = GFX_CTRL_HOSTIF_REV;
printf
(
"gfx: 3D graphics accelerator IP core v%u.%u.%u\n",
hw_id.major, hw_id.minor, hw_id.patch
);
switch (hostif_rev) {
case 0:
printf("gfx: scheduler is in bootloader rom\n");
break;
case 1:
printf("gfx: detected regmap revision %u\n", hostif_rev);
break;
default:
printf("gfx: unknown regmap revision %u\n", hostif_rev);
break;
}
printf
(
"gfx: %s rev %u.%u.%02u #%02u\n",
hostif_rev ? "firmware" : "bootloader",
fw_id.year, fw_id.month, fw_id.day, fw_id.build
);
return 0;
}
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