Adding dual booting fx2 firmware.

 * HDMI2USB now boots into HDMI2USB mode!
 * Base boots into usbjtag mode.

Author: mithro

Makefile.lm32

@@ -35,7 +35,13 @@ help-lm32:
 gateware-lm32: firmware-lm32
 	@true
 
-firmware-lm32: third_party/misoc/.git
+ifeq ($(TARGET),hdmi2usb)
+EXTRA_DEPS = embed-fx2
+else
+EXTRA_DEPS =
+endif
+
+firmware-lm32: third_party/misoc/.git $(EXTRA_DEPS)
 	cd $(MSCDIR) && $(CMD) build-headers
 	$(MAKE) -C firmware/lm32 all
 

firmware/lm32/ci.c

@@ -87,7 +87,7 @@ static void help_debug(void)
 	puts("debug tofe_eeprom              - dump TOFE Board Info EEPROM");
 #endif
 #ifdef CSR_FX2_RESET_OUT_ADDR
-	puts("debug fx2_reboot               - reboot the FX2 USB IC");
+	puts("debug fx2_reboot firmware      - reboot the FX2 USB IC into firmware");
 #endif
 }
 
@@ -624,7 +624,18 @@ void ci_service(void)
 #endif
 #ifdef CSR_FX2_RESET_OUT_ADDR
 		else if(strcmp(token, "fx2_reboot") == 0) {
-			fx2_reboot();
+			token = get_token(&str);
+			if(strcmp(token, "") || strcmp(token, "usbjtag") == 0) {
+				fx2_reboot(FX2FW_USBJTAG);
+			}
+#ifdef ENCODER_BASE
+			else if (strcmp(token, "hdmi2usb") == 0) {
+				fx2_reboot(FX2FW_HDMI2USB);
+			}
+#endif
+			else {
+				printf("Unknown firmware\n");
+			}
                 }
 #endif
 		else if(strcmp(token, "edid") == 0) {

firmware/lm32/fx2.c

@@ -10,39 +10,67 @@
 #define FX2_HACK_SHIFT_REG_EMPTY 2
 #define FX2_HACK_STATUS_READY 0
 
-#define FX2_FIRMWARE fx2_mbfw_usbjtag
 #include "fx2_fw_usbjtag.c"
+#ifdef ENCODER_BASE
+#include "fx2_fw_hdmi2usb.c"
+#endif
 
 static void fx2_wait(void) {
 	unsigned int i;
 	for(i=0;i<1000;i++) __asm__("nop");
 }
 
+enum fx2_fw_version fx2_fw_active;
+
+
+static size_t next_read_addr;
+static size_t end_addr;
+
 inline uint8_t fx2_fw_get_value(size_t addr) {
 	uint8_t r = 0xff;
-	if (addr < sizeof(FX2_FIRMWARE)) {
-		r = FX2_FIRMWARE.bytes[addr];
+	if (addr < end_addr) {
+		switch(fx2_fw_active) {
+		case FX2FW_USBJTAG:
+			r = fx2_mbfw_usbjtag.bytes[addr];
+			break;
+#ifdef ENCODER_BASE
+		case FX2FW_HDMI2USB:
+			r = fx2_mbfw_hdmi2usb.bytes[addr];
+			break;
+
+#endif
+		}
 	} else {
-		printf("fx2: Read from invalid address %02X\n", addr);
+		printf("fx2: Read from invalid address for USB-JTAG firmware %02X\n", addr);
 	}
 	return r;
 }
 
 #define FX2_REPORT_PERIOD (1 << 22)
 #define FX2_WAIT_PERIOD FX2_REPORT_PERIOD*10
 
-static size_t next_read_addr;
-static void fx2_init(void)
+static void fx2_load_init(void)
 {
 	next_read_addr = 0;
+	switch(fx2_fw_active) {
+	case FX2FW_USBJTAG:
+		end_addr = FX2_MBFW_USBJTAG_END;
+		break;
+#ifdef ENCODER_BASE
+	case FX2FW_HDMI2USB:
+		end_addr = FX2_MBFW_HDMI2USB_END;
+		break;
+#endif
+	}
+
 	fx2_hack_slave_addr_write(FX2_HACK_SLAVE_ADDRESS);
 	fx2_hack_shift_reg_write(fx2_fw_get_value(0));
 	fx2_hack_status_write(FX2_HACK_STATUS_READY);
 }
 
 static void fx2_load(void)
 {
-	fx2_init();
+	fx2_load_init();
 	printf("fx2: Waiting for FX2 to load firmware.\n");
 
 	uint64_t i = 0;
@@ -54,7 +82,7 @@ static void fx2_load(void)
 				break;
 			}
 		} else if ((i % FX2_REPORT_PERIOD) == 0) {
-			printf("fx2: Waiting at %02X (end: %02X)\n", next_read_addr, FX2_FIRMWARE_END);
+			printf("fx2: Waiting at %02X (end: %02X)\n", next_read_addr, end_addr);
 		}
 	}
 	if (i > 0) {
@@ -69,16 +97,16 @@ bool fx2_service(bool verbose)
 	unsigned char status = fx2_hack_status_read();
 	if(status == FX2_HACK_SHIFT_REG_EMPTY) { // there's been a master READ
 		if (verbose) {
-			printf("fx2: read %02X (end: %02X)\n", next_read_addr, FX2_FIRMWARE_END);
+			printf("fx2: read %02X (end: %02X)\n", next_read_addr, end_addr);
 		}
-		if (next_read_addr < FX2_FIRMWARE_END) {
+		if (next_read_addr < end_addr) {
 			// Load next value into the system
 			fx2_hack_shift_reg_write(fx2_fw_get_value(next_read_addr+1));
 			fx2_hack_status_write(FX2_HACK_STATUS_READY);
 			next_read_addr++;
 		} else {
 			printf("fx2: Finished loading firmware.\n");
-			fx2_init();
+			fx2_load_init();
 		}
 		return true;
 	} else if (status != 0) {
@@ -87,8 +115,9 @@ bool fx2_service(bool verbose)
 	return false;
 }
 
-void fx2_reboot(void)
+void fx2_reboot(enum fx2_fw_version fw)
 {
+	fx2_fw_active = fw;
 	printf("fx2: Turning off.\n");
 	fx2_reset_out_write(0);
 	fx2_wait();
@@ -97,4 +126,13 @@ void fx2_reboot(void)
 	fx2_load();
 }
 
+void fx2_init(void)
+{
+#ifdef ENCODER_BASE
+	fx2_reboot(FX2FW_HDMI2USB);
+#else
+	fx2_reboot(FX2FW_USBJTAG);
+#endif
+}
+
 #endif

firmware/lm32/fx2.h

@@ -3,7 +3,15 @@
 
 #include <stdbool.h>
 
+enum fx2_fw_version {
+	FX2FW_USBJTAG,
+#ifdef ENCODER_BASE
+	FX2FW_HDMI2USB,
+#endif
+};
+
+void fx2_init(void);
 bool fx2_service(bool verbose);
-void fx2_reboot(void);
+void fx2_reboot(enum fx2_fw_version fw);
 
 #endif

firmware/lm32/main.c

@@ -55,7 +55,7 @@ int main(void)
 
 	// Reboot the FX2 chip into HDMI2USB mode
 #ifdef CSR_FX2_RESET_OUT_ADDR
-	fx2_reboot();
+	fx2_init();
 #endif
 
 	ci_prompt();

targets/opsis_base.py

@@ -160,7 +160,7 @@ class BaseSoC(SDRAMSoC):
     mem_map.update(SDRAMSoC.mem_map)
 
     def __init__(self, platform,
-                 firmware_ram_size=0xa000,
+                 firmware_ram_size=0x10000,
                  firmware_filename=None,
                  **kwargs):
         clk_freq = 50*1000000

targets/opsis_hdmi2usb.py

@@ -8,12 +8,12 @@
 
 class VideomixerSoC(BaseSoC):
     csr_map = {
-        "hdmi_out0":         20,
-        "hdmi_out1":         21,
-        "hdmi_in0":          22,
-        "hdmi_in0_edid_mem": 23,
-        "hdmi_in1":          24,
-        "hdmi_in1_edid_mem": 25,
+        "hdmi_out0":         21,
+        "hdmi_out1":         22,
+        "hdmi_in0":          23,
+        "hdmi_in0_edid_mem": 24,
+        "hdmi_in1":          25,
+        "hdmi_in1_edid_mem": 26,
     }
     csr_map.update(BaseSoC.csr_map)
 
@@ -57,8 +57,8 @@ def __init__(self, platform, **kwargs):
 
 class HDMI2USBSoC(VideomixerSoC):
     csr_map = {
-        "encoder_reader": 26,
-        "encoder":        27
+        "encoder_reader": 27,
+        "encoder":        28,
     }
     csr_map.update(VideomixerSoC.csr_map)
     mem_map = {