platform/wavelet3d/host_sw: iniital commit, gfx probing

1 files changed, 72 insertions, 0 deletions

diff --git a/platform/wavelet3d/host_sw/main.c b/platform/wavelet3d/host_sw/main.c
new file mode 100644
index 0000000..5dfedce
--- /dev/null
+++ b/platform/wavelet3d/host_sw/main.c
@@ -0,0 +1,72 @@
+#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;
+}