Merge pull request #330 from vDorst/SRAM-easy-changes

Sram easy changes

Makefile

@@ -53,6 +53,7 @@ create_build_dir:
 # Keep machine.c in first position to fail immediately on invalid $MACHINE value
 SRCS = \
 	machine.c \
+	machine_init.c \
 	cmd_editor.c \
 	cmd_parser.c \
 	dhcp.c \
@@ -138,10 +139,11 @@ $(BUILDDIR)/rtlplayground-$(FILENAME_EXTENSION).bin: $(BUILDDIR)/rtlplayground.i
 machine_check:
 	@mkdir -p $(BUILDDIR)/tmp
 	@set -eo pipefail; \
-	for MACHINE in `grep -e ' MACHINE_' machine.c | sed -e 's%^.* MACHINE_%%' -e 's%[ ]*//.*$$%%' | sort -u`; \
+	for MACHINE in `grep -E '^[[:space:]]*(//[[:space:]]*)?#define MACHINE_' machine.h | sed -E 's%^[[:space:]]*(//[[:space:]]*)?#define MACHINE_%%' | awk '{print $$1}' | sort -u`; \
 	do \
 	echo "Checking $${MACHINE}"; \
 	$(CC) $(CC_FLAGS) -DMACHINE_$${MACHINE} -MMD -o $(BUILDDIR)/tmp/machine_check -c machine.c; \
+	$(CC) $(CC_FLAGS) -DMACHINE_$${MACHINE} -MMD -o $(BUILDDIR)/tmp/machine_check -c machine_init.c; \
 	done
 	@rm -rf $(BUILDDIR)/tmp
 

cmd_editor.c

@@ -193,7 +193,7 @@ void cmd_edit(void) __banked
 		// Check whether return was pressed:
 		if (sbuf[l] == '\n' || sbuf[l] == '\r') {
 			write_char('\n');
-			cmd_buffer[cmd_line_len] = '\0';
+			cmd_buffer[cmd_line_len] = NUL;
 //			write_char('>'); print_string_x(cmd_buffer); write_char('<');
 			// If there is a command we print the prompt after execution
 			// otherwise immediately because there is nothing to execute

doc/devices/2M-PCB43-V1.1.md

@@ -15,7 +15,7 @@ and sold by Mokerlink.
 The device is fully supported:
 - All 4 2.5GBASE-T RJ45 ports work at 10/100/1000/2500 Mbps
 - The SFP+ port supports 1G, 2.5G and 10G modules 
-- LEDs work with the same indiciations as the OEM firmware (use KP_9000_6XHML_X2 in machine.h if building yourself or the corresponding pre-compiled binary)
+- LEDs work with the same indiciations as the OEM firmware (use KP_9000_6XHML_X2_V1_1 in machine.h if building yourself or the corresponding pre-compiled binary)
 - untested due to missing Hardware: SFP+ ports equipped with 1G or 2.5G SFPs.
 
 ### Hardware overview

doc/devices/KP-9000-6XH-X2.md

@@ -1,17 +1,36 @@
-# Keeplink KP-9000-6XH-X2
+# Keeplink KP-9000-6XH-X2 / KP-9000-6XHML-X2
 
-Following is documentation for unmanaged switch marked as `KP-9000-6XH-X2`.
+Following is documentation for switches marked as `KP-9000-6XH-X2` or
+`KP-9000-6XHML-X2`.
 
 Using SPI clamp in-board is the only method for initial installation.
 
 ### Label specifications
 
 - **Name**: 4X 2.5G RJ45 Port + 2 X 10G SFP+ Port  
-- **Model**: KP-9000-6XH-X2  
+- **Model**: KP-9000-6XH-X2 / KP-9000-6XHML-X2
 - **Ports**:  
   - 4 × RJ45: 10/100/1000/2500 Mbps  
   - 2 × SFP+: 1000 / 2500 / 10000 Mbps  
 
+### Machine target
+
+These devices exist with different PCB revisions. Select the machine target by
+the PCB silkscreen, not by the label on the case. The `6XH` / `6XHML`
+distinction appears to be a stock firmware, SKU or label difference, not a
+reliable indicator of PCB wiring. The PCB revision defines the hardware layout.
+
+| PCB silkscreen | Known labels / devices | Recommended machine target | Equivalent target | Legacy target |
+| --- | --- | --- | --- | --- |
+| `2M-PCB43-V1.1` | Mokerlink 2G040210GSM web-managed 4+2 switch | `MACHINE_KP_9000_6XHML_X2_V1_1` | `MACHINE_KP_9000_6XH_X2_V1_1` | `MACHINE_KP_9000_6XHML_X2` |
+| `2M-PCB43-V1.2` | `KP-9000-6XHML-X2` | `MACHINE_KP_9000_6XHML_X2_V1_2` | `MACHINE_KP_9000_6XH_X2_V1_2` | `MACHINE_KP_9000_6XHML_X2` |
+| `2M-PCB43-V2.1` | `KP-9000-6XH-X2`, `KP-9000-6XHML-X2` | `MACHINE_KP_9000_6XH_X2_V2_1` or `MACHINE_KP_9000_6XHML_X2_V2_1` | same V2.1 layout | `MACHINE_KP_9000_6XH_X2` |
+
+The V1.1 and V1.2 boards currently use the same V1.x GPIO, SFP, port and LED
+layout. The V2.1 board uses a different V2.1 layout with custom LED muxing.
+Legacy targets are preserved for compatibility with already-tested devices, but
+new builds should prefer the explicit PCB-revision targets.
+
 ### What works
 
 - All four 2.5GBASE-T RJ45 ports at 10/100/1000/2500 Mbps
@@ -19,7 +38,7 @@ Using SPI clamp in-board is the only method for initial installation.
 - LEDs
 - untested due to missing Hardware: SFP+ ports equipped with 1G or 2.5G SFPs.
 
-### Hardware overview
+### Hardware overview: 2M-PCB43-V2.1
 
 Front side:
 
@@ -44,6 +63,24 @@ Bottom
 
 <img src="photos/2M-PCB43-V2.1-unmanaged/2M-PCB43-V2.1-bottom.jpg" width="600" />
 
+### Hardware overview: 2M-PCB43-V1.1 / V1.2
+
+The V1.1 board has been reported in the Mokerlink 2G040210GSM web-managed 4+2
+switch. The V1.2 board has been seen in managed `KP-9000-6XHML-X2` devices.
+Both use the same V1.x layout.
+
+Label:
+
+<img src="photos/KP-9000-6XHML-X2/label.jpg" width="600" />
+
+Top side:
+
+<img src="photos/KP-9000-6XHML-X2/pcb_top.jpg" width="600" />
+
+Bottom:
+
+<img src="photos/KP-9000-6XHML-X2/pcb_bottom.jpg" width="600" />
+
 ## Reset Button
 
 There's an unpopulated Reset button on the front left side of the PCB.
@@ -54,4 +91,3 @@ The front case has already the hole in the metal case, you just have to punch a
 ## Power supply
 
 Input power is delivered via barell plug, `12V 1A` adapter was provided.
-

doc/supported_devices.md

@@ -15,11 +15,12 @@ The following devices have been tested and are fully working:
 | Horaco   | ZX310S-4T2XT    | Yes     | [PCB-SL310S-4T2XT-V1.0.0-22273](devices/ZX310S-4T2XT.md)                  | 2M    | 6     |
 | Horaco   | ZX-SG4T2        | No      | [SWTG024AS-A-V2.0.1_19650_4C_2SFP](devices/SWTG024AS-A-V2.0.1_4C_2SFP.md) | 0.5M  | 4 + 2 |
 | Horaco   | ZX-SWTG124AS    | Yes     | [SWTG024AS-v2.0](devices/SWTG024AS.md)                                    |       | 4 + 2 |
-| Keeplink | KP-9000-6XH-X2  | No      | [2M-PCB43-V2.1](devices/KP-9000-6XH-X2.md)                                |       | 4 + 2 |
+| Keeplink | KP-9000-6XH-X2 / KP-9000-6XHML-X2 | No/Yes | [2M-PCB43-V1.2 / V2.1](devices/KP-9000-6XH-X2.md) |       | 4 + 2 |
 | keepLINK | KP-9000-9XHML-X | Yes     | [2M-PCB23-V2.2](devices/2M-PCB23-V2_2.md)                                 | 2M    | 8 + 1 |
 | keepLINK | KP-9000-9XHML-X | Yes     | [2M-PCB23-V3.1](devices/2M-PCB23-V3_1.md)                                 | 2M    | 8 + 1 |
 | LIANGUO  | SWTG024AS       | No      | [SWTG024AS-v2.0-17452](devices/SWTG024AS.md)                              | 0.5M  | 4 + 2 |
 | Lianguo  | ZX-SWTGW215AS   | Yes     | [PCB-SWTG115AS-V2.0](devices/SWTGW215AS.md)                               | 2M    | 5 + 1 |
+| Mokerlink| 2G040210GSM     | Yes     | [2M-PCB43-V1.1](devices/2M-PCB43-V1.1.md)                                 |       | 4 + 2 |
 | Mokerlink| ZX-SWTGW218AS   | Yes     | [SWTG118AS-V2.0-16029](devices/SWTGW218AS.md)                             | 2M    | 8 + 1 |
 | Ruiying  | RY-4GT-2SX      | No      | [FG-4GT-2SX_V2.0](devices/FG-4GT-2SX_V2.0.md)                             | 4M    | 4 + 2 |
 | Sodola   | SL-SWTG124AS-D  | Yes     | [SWTG024AS-v2.0-17452](devices/SWTG024AS.md)                              | 2M    | 4 + 2 |
@@ -29,6 +30,10 @@ The following devices have been tested and are fully working:
 | XikeStor | SKS3200-8E1X    | Yes     | [SWTG118AS-V2.1-17462](devices/SWTGW218AS.md)                             | 2M    | 8 + 1 |
 | Ztyuav   | Z-QWYT0402      | No      | [PCB-K0402WS-V3.0](devices/PCB-K0402WS-V3.0.md)                           |       | 4 + 2 |
 
+For KP-9000-6XH-X2 / KP-9000-6XHML-X2 / Mokerlink 2G040210GSM devices, select
+the machine target by PCB revision. The ML/non-ML or managed/unmanaged label
+alone does not identify the wiring.
+
 Other device based on RTL8272/3 that may work are described here: [Up-N-Atoms 2.5 GBit RTL Switch hacking guide](https://github.com/up-n-atom/SWTG118AS)
 
 Many of the RTL8272/3 devices come in versions with PoE support. The RTLPlayground usually also

html/stat.js

@@ -180,7 +180,7 @@ function fillStats() {
       td = tr.insertCell(); td.appendChild(document.createTextNode(`${txB[i]}` + t('common_pkts')));
       td = tr.insertCell(); td.appendChild(document.createTextNode(`${rxG[i]}` + t('common_pkts')));
       td = tr.insertCell(); td.appendChild(document.createTextNode(`${rxB[i]}` + t('common_pkts')));
-      var button = '<button type="button" style="margin: 0 0 0 24px" onclick="getCounters(' + i + ');">' + t('stat_show') + '</button>';
+      var button = '<button type="button" style="margin: 0 0 0 24px" onclick="getCounters(' + (i + 1) + ');">' + t('stat_show') + '</button>';
       td = tr.insertCell(); td.innerHTML = button;
     }
   }

httpd/httpd.c

@@ -41,8 +41,17 @@ __xdata uint32_t cont_addr;
 
 // HTTP header properties
 __xdata uint8_t boundary[72];
-__xdata uint8_t *content_type = 0;
+
-__xdata uint8_t *session = 0;
+// a client may split the request anywhere, including inside a boundary or a
+// part header, so a configuration upload is parsed only once it is complete;
+// sized for a full config sector plus the multipart framing around it
+#define CONFIG_UPLOAD_BUF (CONFIG_LEN + 384)
+__xdata uint8_t config_upload;
+__xdata uint8_t config_buf[CONFIG_UPLOAD_BUF];
+__xdata uint16_t cfg_pos, cfg_hdr, cfg_body, cfg_end, cfg_last;
+__xdata uint8_t cfg_bl;
+__xdata uint8_t * __xdata content_type = 0;
+__xdata uint8_t * __xdata session = 0;
 
 // Global variables holding POST state
 __xdata uint16_t bindex; // Current index into the boundary
@@ -54,7 +63,7 @@ __xdata char passwd[21];
 __xdata char session_id[SESSION_ID_LENGTH + 1];
 __xdata uint8_t authenticated;
 __xdata uint32_t now;
-__xdata uint8_t *timeptr;
+__xdata uint8_t * __xdata timeptr;
 __xdata uint32_t last_session_use;
 
 #define TSTATE_NONE		0
@@ -77,6 +86,7 @@ inline uint8_t is_separator(uint8_t c)
 
 void httpd_init(void) __banked
 {
+	config_upload = 0; // xdata is not zeroed by the startup code
 	__xdata struct httpd_state * __xdata s = &(uip_conn->appstate);
 	// Start listening to port 80
 	uip_listen(HTONS(80));
@@ -109,8 +119,8 @@ bool is_word(__xdata uint8_t *xdata_str_p, __code uint8_t * __xdata code_str_p)
 		u = *xdata_str_p++;
 		c = *code_str_p++;
 
-		if (c == '\0') {
+		if (c == NUL) {
-			if (u != '\0' && u != ' ' && u != '\t' && u != ':' && u != '?' && u != '=' && u != '\n' && u != '\r')
+			if (u != NUL && u != ' ' && u != '\t' && u != ':' && u != '?' && u != '=' && u != '\n' && u != '\r')
 				return false;
 			return true;
 		}
@@ -130,8 +140,8 @@ bool is_url_word_x(__xdata uint8_t *uri_str_p, __xdata uint8_t *src_str_p)
 		u = *uri_str_p++;
 		s = *src_str_p++;
 
-		if (s == '\0') {
+		if (s == NUL) {
-			if (u != '\0' && u != ' ' && u != '\t' && u != ':' && u != '?' && u != '=' && u != '\n' && u != '\r')
+			if (u != NUL && u != ' ' && u != '\t' && u != ':' && u != '?' && u != '=' && u != '\n' && u != '\r')
 				return false;
 			return true;
 		}
@@ -173,9 +183,9 @@ bool is_word_x(__xdata uint8_t *lhs_str_p, __xdata uint8_t *rhs_str_p)
 		u = *lhs_str_p++;
 		c = *rhs_str_p++;
 
-		if (c == '\0') {
+		if (c == NUL) {
 			/* ';' separates cookies in a Cookie header, so it ends a value too. */
-			if (u != '\0' && u != ' ' && u != '\t' && u != ':' && u != '?' && u != '=' && u != '\n' && u != '\r' && u != ';')
+			if (u != NUL && u != ' ' && u != '\t' && u != ':' && u != '?' && u != '=' && u != '\n' && u != '\r' && u != ';')
 				return false;
 			return true;
 		}
@@ -241,7 +251,7 @@ __xdata uint8_t *skip_boundary(__xdata uint8_t *p)
 }
 
 
-__xdata uint8_t *scan_header(__xdata uint8_t *p)
+__xdata uint8_t *scan_header(__xdata uint8_t * __xdata p)
 {
 	content_type = 0;
 	session = 0;
@@ -300,10 +310,12 @@ __xdata uint8_t *scan_header(__xdata uint8_t *p)
 	return p;
 }
 
-
+/*
-void gen_random_bytes(__xdata uint8_t *b, uint8_t bytes)
+ * Generate random HEX-chars at the buffer location.
+ */
+void gen_random_hex_chars(__xdata uint8_t * b, __xdata uint8_t bytes)
 {
-	__xdata uint8_t i = 0;
+	uint8_t i = 0;
 	while (bytes) {
 		if (!i)
 			get_random_32();
@@ -315,6 +327,65 @@ void gen_random_bytes(__xdata uint8_t *b, uint8_t bytes)
 }
 
 
+/* 0: body incomplete, 1: configuration stored, 2: malformed */
+static uint8_t config_take(void)
+{
+	cfg_bl = strlen_x(boundary);
+
+	// the body is complete once the closing boundary has arrived
+	cfg_last = 0;
+	while (1) {
+		if (cfg_last + cfg_bl + 1 >= write_len)
+			return 0;
+		if (strstart_x(&config_buf[cfg_last], boundary)
+		    && strstart(&config_buf[cfg_last + cfg_bl], "--"))
+			break;
+		cfg_last++;
+	}
+
+	// every part lies ahead of the closing boundary, so it bounds the walk
+	cfg_pos = 0;
+	while (cfg_pos < cfg_last) {
+		if (!strstart_x(&config_buf[cfg_pos], boundary)) {
+			cfg_pos++;
+			continue;
+		}
+		cfg_hdr = cfg_pos + cfg_bl;
+		cfg_body = cfg_hdr;
+		while (1) {
+			if (cfg_body + 3 >= cfg_last)
+				return 2;
+			if (strstart(&config_buf[cfg_body], "\r\n\r\n"))
+				break;
+			cfg_body++;
+		}
+		cfg_end = cfg_body;
+		cfg_body += 4;
+		// reaching cfg_last is a match: the last part ends at the closing boundary
+		while (cfg_end < cfg_last && !strstart_x(&config_buf[cfg_end], boundary))
+			cfg_end++;
+		while (cfg_hdr + 8 < cfg_body) {
+			// the part carrying a filename holds the configuration
+			if (strstart(&config_buf[cfg_hdr], "filename")) {
+				// the payload plus its terminator must fit the sector
+				if (cfg_end - cfg_body + 1 > CONFIG_LEN)
+					return 2;
+				config_buf[cfg_end] = 0;
+				flash_region.addr = CONFIG_START;
+				flash_sector_erase();
+				flash_region.addr = CONFIG_START;
+				flash_region.len = cfg_end - cfg_body + 1;
+				flash_write_bytes(config_buf + cfg_body);
+				return 1;
+			}
+			cfg_hdr++;
+		}
+		cfg_pos = cfg_end;
+	}
+	return 2;
+}
+
+
 /*
  * Reads post data from the http stream and writes it into flash memory
  * Input: the current position in the TCP buffer (uip_appdata)
@@ -418,10 +489,10 @@ void handle_post(void)
 		// Find end of request path
 		while (*p && !is_separator(*p))
 			p++;
-		*p++ = '\0';
+		*p++ = NUL;
 
 		// Find end of request header
-		boundary[0] ='\0';
+		boundary[0] =NUL;
 		p = scan_header(p);
 		dbg_string("Boundary: >"); dbg_string_x(boundary); dbg_string("<\n");
 		if (!*p || !content_type) {
@@ -437,6 +508,7 @@ void handle_post(void)
 				return;
 			}
 			print_string("Firmware upload started.");
+			config_upload = 0;
 			uptr = FIRMWARE_UPLOAD_START;
 			verify_crc = 1;
 			max_upload = 1024576;
@@ -445,12 +517,10 @@ void handle_post(void)
 				send_unauthorized();
 				return;
 			}
-			dbg_string("Configuration upload, erasing config mem!\n");
+			dbg_string("Configuration upload\n");
-			uptr = CONFIG_START;
 			verify_crc = 0;
-			max_upload = 2048;
+			config_upload = 1;
-			flash_region.addr = CONFIG_START;
+			write_len = 0;
-			flash_sector_erase();
 		}
 		// Check for other POST requests, which are not multipart, below
 	} else {
@@ -481,11 +551,11 @@ void handle_post(void)
 		if (is_url_word_x(p, passwd)) {
 			dbg_string("Password accepted!\n");
 			read_reg_timer(&last_session_use);
-			gen_random_bytes(session_id, SESSION_ID_LENGTH);
+			gen_random_hex_chars(session_id, SESSION_ID_LENGTH);
-			session_id[SESSION_ID_LENGTH] = '\0';
+			session_id[SESSION_ID_LENGTH] = NUL;
 			slen = strtox(outbuf, "HTTP/1.1 302 Found\r\nConnection: close\r\nLocation: index.html\r\n" \
 					      "Set-Cookie: session=");
-			for (register uint8_t i = 0; i < SESSION_ID_LENGTH; i++)
+			for (uint8_t i = 0; i < SESSION_ID_LENGTH; i++)
 				outbuf[slen++] = session_id[i];
 			slen += strtox(outbuf + slen, "; SameSite=Strict\r\n\r\n");
 		} else {
@@ -504,6 +574,32 @@ void handle_post(void)
 			send_bad_request();
 			return;
 		}
+		if (config_upload) {
+			cfg_pos = uip_len - (p - uip_appdata);
+			if (write_len + cfg_pos >= CONFIG_UPLOAD_BUF) {
+				print_string("Configuration too large, aborting.\n");
+				config_upload = 0;
+				s->tstate = TSTATE_NONE;
+				send_bad_request();
+				return;
+			}
+			memcpy(config_buf + write_len, p, cfg_pos);
+			write_len += cfg_pos;
+			uint8_t taken = config_take();
+
+			if (!taken) {
+				s->tstate = TSTATE_MULTIPART;
+				return;
+			}
+			config_upload = 0;
+			s->tstate = TSTATE_NONE;
+			if (taken == 2) {
+				send_bad_request();
+				return;
+			}
+			slen = strtox(outbuf, "HTTP/1.1 200 OK\r\nConnection: close\r\n\r\n");
+			return;
+		}
 		// We skip the intial parts as part of the header
 		do {
 			p = skip_boundary(p);
@@ -642,7 +738,7 @@ void httpd_appcall(void)
 		__xdata uint8_t *q = p;
 		while (*p && !is_separator(*p))
 			p++;
-		*p = '\0';
+		*p = NUL;
 		dbg_string_x(q);
 		dbg_char('\n');
 
@@ -664,16 +760,9 @@ void httpd_appcall(void)
 				parse_short(q + 15);
 				send_vlan(short_parsed);
 			} else if (is_word(q, "/counters.json")) {
-				/* The port is one raw character of the request line and
-				 * indexes a nine entry table, so bound it here instead
-				 * of trusting the client to have sent a digit. Anything
-				 * below '0' wraps well past eight, so the one test
-				 * covers both ends. */
 				uint8_t cport = q[20] - '0';
-				if (cport > 8)
+				if (send_counters(cport))
 					send_bad_request();
-				else
-					send_counters(cport);
 			} else if (is_word(q, "/eee.json")) {
 				send_eee();
 			} else if (is_word(q, "/bandwidth.json")) {

httpd/page_impl.c

@@ -157,14 +157,14 @@ void sfr_data_to_html(void)
 }
 
 
-void reg_to_html(register uint16_t reg)
+void reg_to_html(uint16_t reg)
 {
 	reg_read_m(reg);
 	sfr_data_to_html();
 }
 
 
-void reg_to_html_long(register uint16_t reg)
+void reg_to_html_long(uint16_t reg)
 {
 	reg_read_m(reg);
 	byte_to_html(sfr_data[0]);
@@ -177,10 +177,12 @@ void reg_to_html_long(register uint16_t reg)
 void send_sfp_info(uint8_t sfp)
 {
 	// This loops over the Vendor-name, Vendor OUI, Vendor PN and Vendor rev ASCII fields
-	for (uint8_t i = 20; i < 60; i++) {
+	for (uint8_t i = 16; i < 64; i++) {
-		if (i >= 36 && i < 40) // Skip Non-ASCII codes
+		if (!(i & 0xf))
+			sfp_read_block(sfp, i, 16);
+		if (i < 20 || i >= 60 || (i >= 36 && i < 40)) // Skip Non-ASCII codes
 			continue;
-		uint8_t c = sfp_read_reg(sfp, i);
+		uint8_t c = sfp_buf[i & 0xf];
 		if (c && c != 0xa0) // a0 is the byte read from a non-existant I2C EEPROM
 			char_to_html(c);
 	}
@@ -193,32 +195,10 @@ void sfp_send_data(uint8_t slot, uint8_t reg, uint8_t len)
 	if (len > 16)
 		return;
 
-	if (reg & 0x80) {	// Configure SFP readings address (0x51) as I2C device address
+	sfp_read_block(slot, reg, len);
-		reg &= 0x7f;
-		REG_WRITE(RTL837X_REG_I2C_CTRL, 0x00, 0x1 << (I2C_MEM_ADDR_WIDTH-16) | (len - 1) & 0xf,  0x51 >> 5, (0x51 << 3) & 0xff);
-	} else {
-		REG_WRITE(RTL837X_REG_I2C_CTRL, 0x00, 0x1 << (I2C_MEM_ADDR_WIDTH-16) | (len - 1) & 0xf,  0x50 >> 5, (0x50 << 3) & 0xff);
-	}
 
-	reg_read_m(RTL837X_REG_I2C_CTRL);
+	for (uint8_t i = 0; i < len; i++)
-	sfr_mask_data(1, 0xfc, i2c_bus_from_scl_pin(machine.sfp_port[slot].i2c.scl) << 5 | i2c_bus_from_sda_pin(machine.sfp_port[slot].i2c.sda) << 2);
+		byte_to_html(sfp_buf[i]);
-	reg_write_m(RTL837X_REG_I2C_CTRL);
-
-	REG_WRITE(RTL837X_REG_I2C_IN, 0, 0, 0, reg);
-
-	// Execute I2C Read
-	reg_bit_set(RTL837X_REG_I2C_CTRL, 0);
-
-	// Wait for execution to finish
-	do {
-		reg_read_m(RTL837X_REG_I2C_CTRL);
-	} while (sfr_data[3] & 0x1);
-
-	for (uint8_t i = 0; i < len; i++) {
-		if (!(i & 0x3))
-			reg_read_m(RTL837X_REG_I2C_OUT + i);
-		byte_to_html(sfr_data[3 - (i & 0x3)]);
-	}
 }
 
 
@@ -309,17 +289,26 @@ void send_vlan(uint16_t vlan)
 	slen += strtox(outbuf + slen, "\"}");
 }
 
-
+/* Send counters
-void send_counters(char port)
+ * Only accepts physical port 1..9.
+ * Returns an error if the port physical don't exists.
+ */
+bool send_counters(uint8_t phys_port)
 {
-	dbg_string("send_counters called: "); dbg_byte(port); dbg_char('\n');
+	uint8_t phys_port_idx = phys_port - 1;
+	if (phys_port_idx > 8)
+		goto err;
+	uint8_t log_port = machine.phys_to_log_port[phys_port_idx];
+	if (log_port == 0)
+		goto err;
+
+	dbg_string("send_counters called: "); dbg_byte(phys_port_idx); dbg_char('\n');
 	slen = strtox(outbuf, HTTP_RESPONCE_JSON);
-	dbg_string("sending counters\n");
+	dbg_string("sending counters\n"); dbg_byte(phys_port_idx);
-	dbg_byte(port);
+
-	uint8_t i = machine.phys_to_log_port[port];
+	char_to_html('[');
-	slen += strtox(outbuf + slen, "[");
 	for (uint8_t counter = 0; counter < 0x37; counter++) {
-		STAT_GET(counter, i);
+		STAT_GET(counter, log_port);
 		slen += strtox(outbuf + slen, "\"0x");
 		reg_to_html(RTL837X_STAT_V_HIGH);
 		reg_to_html_long(RTL837X_STAT_V_LOW);
@@ -328,6 +317,12 @@ void send_counters(char port)
 			char_to_html(',');
 	}
 	char_to_html(']');
+
+	return false;
+
+err:
+	dbg_string("Error: counters: phy_port_idx don't exists\n");
+	return true;
 }
 
 
@@ -702,13 +697,13 @@ void send_status(void)
 					sfp_send_data(sfp, 238, 1);
 				}
 				slen += strtox(outbuf + slen,"\",\"sfp_vendor\":\"");
-				for (register uint8_t s = 0; s < 16 && sfp_module_vendor[sfp][s]; s++)
+				for (uint8_t s = 0; s < 16 && sfp_module_vendor[sfp][s]; s++)
 					outbuf[slen++] = sfp_module_vendor[sfp][s];
 				slen += strtox(outbuf + slen,"\",\"sfp_model\":\"");
-				for (register uint8_t s = 0; s < 16 && sfp_module_model[sfp][s]; s++)
+				for (uint8_t s = 0; s < 16 && sfp_module_model[sfp][s]; s++)
 					outbuf[slen++] = sfp_module_model[sfp][s];
 				slen += strtox(outbuf + slen,"\",\"sfp_serial\":\"");
-				for (register uint8_t s = 0; s < 16 && sfp_module_serial[sfp][s]; s++)
+				for (uint8_t s = 0; s < 16 && sfp_module_serial[sfp][s]; s++)
 					outbuf[slen++] = sfp_module_serial[sfp][s];
 				slen += strtox(outbuf + slen,"\",\"sfp_los\":");
 				if (machine.sfp_port[sfp].pin_los == GPIO_NA) {
@@ -822,7 +817,7 @@ found_end:
 	if (valid_len > (TCP_OUTBUF_SIZE - slen)) {
 		cont_len = valid_len - (TCP_OUTBUF_SIZE - slen);
 		valid_len = TCP_OUTBUF_SIZE - slen;
-		cont_addr = valid_len;
+		cont_addr = CONFIG_START + valid_len;
 	}
 	
 	flash_region.addr = CONFIG_START;

httpd/page_impl.h

@@ -1,7 +1,9 @@
 #ifndef __PAGE_IMPL_H__
 #define __PAGE_IMPL_H__
 
-void send_counters(char port);
+#include <stdbool.h>
+
+bool send_counters(uint8_t phys_port);
 void send_status(void);
 void send_vlan(uint16_t vlan);
 void send_basic_info(void);

installer/installer.c

@@ -213,7 +213,7 @@ uint8_t flash_read_status(void)
  * Reads bulk data of length len from the flash memory starging at address src
  * and writes the data into a buffer pointed to by dst in XMEM
  */
-void flash_read_bulk(register __xdata uint8_t *dst, __xdata uint32_t src, register uint16_t len)
+void flash_read_bulk(__xdata uint8_t *dst, __xdata uint32_t src, uint16_t len)
 {
 	short status;
 	do {

machine.c

@@ -5,9 +5,23 @@
 #include "rtl837x_regs.h"
 #include "rtl837x_common.h"
 
-#ifdef MACHINE_KP_9000_6XHML_X2
+#if defined(MACHINE_KP_9000_6XHML_X2) || \
+	defined(MACHINE_KP_9000_6XH_X2_V1_1) || \
+	defined(MACHINE_KP_9000_6XHML_X2_V1_1) || \
+	defined(MACHINE_KP_9000_6XH_X2_V1_2) || \
+	defined(MACHINE_KP_9000_6XHML_X2_V1_2)
 __code const struct machine machine = {
+#if defined(MACHINE_KP_9000_6XH_X2_V1_1)
+	.machine_name = "keepLink KP-9000-6XH V1.1",
+#elif defined(MACHINE_KP_9000_6XHML_X2_V1_1)
+	.machine_name = "keepLink KP-9000-6XHML V1.1",
+#elif defined(MACHINE_KP_9000_6XH_X2_V1_2)
+	.machine_name = "keepLink KP-9000-6XH V1.2",
+#elif defined(MACHINE_KP_9000_6XHML_X2_V1_2)
+	.machine_name = "keepLink KP-9000-6XHML V1.2",
+#else
 	.machine_name = "keepLink KP-9000-6XHML-X2",
+#endif
 	.isRTL8373 = 0,
 	.min_port = 3,
 	.max_port = 8,
@@ -42,8 +56,6 @@ __code const struct machine machine = {
 		    },
 };
 
-void machine_custom_init(void) { }
-
 #elif defined MACHINE_KP_9000_6XH_X
 __code const struct machine machine = {
 	.machine_name = "keepLink KP-9000-6XH-X",
@@ -72,11 +84,15 @@ __code const struct machine machine = {
 		    },
 };
 
-void machine_custom_init(void) { }
+#elif defined(MACHINE_KP_9000_6XH_X2) || defined(MACHINE_KP_9000_6XH_X2_V2_1) || defined(MACHINE_KP_9000_6XHML_X2_V2_1)
-
-#elif defined MACHINE_KP_9000_6XH_X2
 __code const struct machine machine = {
+#if defined(MACHINE_KP_9000_6XHML_X2_V2_1)
+	.machine_name = "keepLink KP-9000-6XHML V2.1",
+#elif defined(MACHINE_KP_9000_6XH_X2_V2_1)
+	.machine_name = "keepLink KP-9000-6XH-X2 V2.1",
+#else
 	.machine_name = "keepLink KP-9000-6XH-X2",
+#endif
 	.isRTL8373 = 0,
 	.min_port = 3,
 	.max_port = 8,
@@ -122,10 +138,6 @@ __code const struct machine machine = {
 		},
 	};
 
-void machine_custom_init(void) {
-	reg_bit_set(RTL837X_REG_LED_GLB_IO_EN, 6);
-}
-
 #elif defined MACHINE_KP_9000_9XH_X_EU
 __code const struct machine machine = {
 	.machine_name = "keepLink KP-9000-9XH-X-EU",
@@ -151,8 +163,6 @@ __code const struct machine machine = {
 		    },
 };
 
-void machine_custom_init(void) { }
-
 #elif defined MACHINE_KP_9000_9XHML_X_V2_2
 __code const struct machine machine = {
 	.machine_name = "keepLink KP-9000-9XHML-X V2.2",
@@ -204,8 +214,6 @@ __code const struct machine machine = {
 	},
 };
 
-void machine_custom_init(void) { }
-
 #elif defined MACHINE_KP_9000_9XHML_X_V3_1
 __code const struct machine machine = {
 	.machine_name = "keepLink KP-9000-9XHML-X V3.1",
@@ -241,8 +249,6 @@ __code const struct machine machine = {
 				0x1a, 0x19, 0x1d, 0x1e, 0x1c, 0x1d, 0x20, 0x21},
 };
 
-void machine_custom_init(void) { }
-
 #elif defined MACHINE_SWGT024_V2_0_MANAGED
 __code const struct machine machine = {
 	.machine_name = "SWGT024 V2.0 Managed",
@@ -284,8 +290,6 @@ __code const struct machine machine = {
 	},
 };
 
-void machine_custom_init(void) { }
-
 #elif defined MACHINE_SWGT024_V2_0_UNMANAGED
 __code const struct machine machine = {
 	.machine_name = "SWGT024 V2.0 Unmanaged",
@@ -327,8 +331,6 @@ __code const struct machine machine = {
 	},
 };
 
-void machine_custom_init(void) { }
-
 #elif defined MACHINE_SWTG018AS_A_V_2_0
 __code const struct machine machine = {
 	.machine_name = "SWTG018AS-A V2.0",
@@ -368,8 +370,6 @@ __code const struct machine machine = {
 		     0x1d, 0x20, 0x21 },
 };
 
-void machine_custom_init(void) { }
-
 #elif defined MACHINE_HG0402XG_V1_1
 __code const struct machine machine = {
 	.machine_name = "HG0402XG V1.1",
@@ -408,8 +408,6 @@ __code const struct machine machine = {
 		    },
 };
 
-void machine_custom_init(void) { }
-
 #elif defined MACHINE_SWTGW218AS
 
 __code const struct machine machine = {
@@ -443,7 +441,48 @@ __code const struct machine machine = {
 				},
 };
 
-void machine_custom_init(void) { }
+#elif defined MACHINE_PCB_SWTG018AS_V2_1_0 // Sold as Sodola SL902 / Horaco "SWTGW218AS"; the SWTGW218AS label also covers other PCBs with different SFP and LED wiring (see MACHINE_SWTGW218AS)
+
+__code const struct machine machine = {
+	.machine_name = "SWTGW218AS (SWTG018AS-V2.1.0)",
+	.isRTL8373 = 1,
+	.mac_flash_offset = 0x1FC000,
+	.min_port = 0,
+	.max_port = 8,
+	.n_sfp = 1,
+	.log_to_phys_port = {1, 2, 3, 4, 5, 6, 7, 8, 9},
+	.phys_to_log_port = {0, 1, 2, 3, 4, 5, 6, 7, 8},
+	.is_sfp = {0, 0, 0, 0, 0, 0, 0, 0, 1},
+	.sfp_port[0].pin_detect = GPIO38,   // pulled low on module insert
+	.sfp_port[0].pin_los = GPIO_NA,     // no LOS pin wired
+	.sfp_port[0].pin_tx_disable = GPIO_NA,
+	.sfp_port[0].sds = 1,
+	.sfp_port[0].i2c = { .sda = GPIO39_I2C_SDA4, .scl = GPIO40_I2C_SCL3_MDC1 },
+	.reset_pin = GPIO54_ACL_BIT2_EN,
+	.high_leds = { .mux = LED_27 | LED_28_SYS | LED_29, .enable = LED_28_SYS | LED_29 },
+	.port_led_set = { 0, 0, 0, 0, 0, 0, 0, 0, 1},
+	// LED wiring matches the SWTG018AS-A V2.0 (same PCB family)
+	.led_sets = {
+		{   /* RJ45: First LED, yellow, second LED: green */
+			LEDS_2G5 | LEDS_LINK,
+			LEDS_2G5 | LEDS_1G | LEDS_100M | LEDS_10M | LEDS_LINK | LEDS_ACT,
+			0,
+			0,
+		}, { /* SFP set (superseded by the raw register override in machine_custom_init) */
+			LEDS_2G5 | LEDS_1G | LEDS_100M | LEDS_10M | LEDS_LINK | LEDS_ACT | LEDS_10G,
+			0,
+			0,
+			0,
+		}},
+	.led_mux_custom = 1,
+	.led_mux = { 0x00, 0x01, 0x04, 0x05, 0x08, // 65e0
+		     0x09, 0x0c, 0x09, 0x0d, 0x10, // 65e4
+		     0x11, 0x0e, 0x14, 0x11, 0x12, // 65e8
+		     0x15, 0x15, 0x16, 0x18, 0x19, // 65ec
+		     0x1a, 0x19, 0x1d, 0x1e, 0x1c, // 65f0
+		     0x1d, 0x20, 0x21 },
+};
+
 #elif defined MACHINE_LIANGUO_ZX_SWTGW215AS // Has PCB branded PCB-SWTG115AS-V2.0 but is labeled and reports as a ZX-SWTGW215AS, seems to be identical to the "real" ZX-SWTGW215AS except for the LEDs
 __code const struct machine machine = {
 	.machine_name = "Lianguo ZX-SWTGW215AS",
@@ -476,8 +515,6 @@ __code const struct machine machine = {
 	.led_mux_custom = 0,
 };
 
-void machine_custom_init(void) { }
-
 #elif defined MACHINE_DEFAULT_8C_1SFP
 __code const struct machine machine = {
 	.machine_name = "8+1 SFP Port Switch",
@@ -503,8 +540,6 @@ __code const struct machine machine = {
 		    },
 };
 
-void machine_custom_init(void) { }
-
 #elif defined MACHINE_TRENDNET_TEG_S562
 __code const struct machine machine = {
 	.machine_name = "Trendnet TEG-S562",
@@ -544,8 +579,6 @@ __code const struct machine machine = {
 
 };
 
-void machine_custom_init(void) { }
-
 #elif defined(MACHINE_PCB_K0402WS_V3) || defined(MACHINE_HI_K0402WS)  // Sold as a variety of devices, see doc/
 __code const struct machine machine = {
 	.machine_name = "PCB-K0402WS-V3.0",
@@ -592,10 +625,6 @@ __code const struct machine machine = {
 		},
 	};
 
-void machine_custom_init(void) { 
-	reg_bit_set(RTL837X_REG_LED_GLB_IO_EN, 6);
-}
-
 #elif defined MACHINE_K0501W_V2_0
 __code const struct machine machine = {
 	.machine_name = "K0501W V2.0",
@@ -630,8 +659,6 @@ __code const struct machine machine = {
 	 },
 };
 
-void machine_custom_init(void) { }
-
 #elif defined MACHINE_ZX310S_4T2XH
 __code const struct machine machine = {
 	.machine_name = "ZX310S-4T2XH",
@@ -675,8 +702,6 @@ __code const struct machine machine = {
 		    },
 };
 
-void machine_custom_init(void) { }
-
 #elif defined MACHINE_STEAMEMO_IG204_V1
 __code const struct machine machine = {
 	.machine_name = "Steamemo IG204 V1",
@@ -727,8 +752,6 @@ __code const struct machine machine = {
 	},
 };
 
-void machine_custom_init(void) { }
-
 #elif defined MACHINE_HI_K0801WS
 __code const struct machine machine = {
     .machine_name = "Hi-Source HI-k0801WS",
@@ -778,8 +801,6 @@ __code const struct machine machine = {
     },
 };
 
-void machine_custom_init(void) { }
-
 #elif defined MACHINE_FNS1200P
 __code const struct machine machine = {
     .machine_name = "FNS-1200P",
@@ -835,11 +856,6 @@ __code const struct machine machine = {
     },
 };
 
-void machine_custom_init(void)
-{
-    reg_bit_set(RTL837X_REG_LED_GLB_IO_EN, 6);
-}
-
 
 #elif defined MACHINE_PCB_SWTG024AS_A_2_0_1
 __code const struct machine machine = {
@@ -889,14 +905,6 @@ __code const struct machine machine = {
             },
     };
 
-void machine_custom_init(void)
-{
-    reg_bit_set(RTL837X_REG_LED_GLB_IO_EN, 6);
-    reg_bit_set(RTL837X_REG_LED_MODE, 17);
-    reg_bit_clear(RTL837X_REG_LED_MODE, 9);
-    reg_bit_clear(RTL837X_REG_LED_MODE, 7);
-}
-
 #elif defined MACHINE_SWTG024AS_A_2_0_1_5C_1SFP
 __code const struct machine machine = {
     .machine_name = "SWTG024AS-A-V2.0.1-5C-1SFP",
@@ -940,25 +948,6 @@ __code const struct machine machine = {
             },
     };
 
-void machine_custom_init(void)
-{
-    uint16_t pval;
-
-    reg_bit_set(RTL837X_REG_LED_GLB_IO_EN, 6);
-    reg_bit_set(RTL837X_REG_LED_MODE, 17);
-    reg_bit_clear(RTL837X_REG_LED_MODE, 9);
-    reg_bit_clear(RTL837X_REG_LED_MODE, 7);
-
-    // OEM firmware sets these companion SDS0 polarity bits for the RTL8221B.
-    sds_read(0, 0, 0);
-    pval = SFR_DATA_U16;
-    sds_write_v(0, 0, 0, pval | 0x100);
-
-    sds_read(0, 6, 2);
-    pval = SFR_DATA_U16;
-    sds_write_v(0, 6, 2, pval | 0x4000);
-}
-
 #elif defined MACHINE_SWTG024AS_V2_0
 __code const struct machine machine = {
     .machine_name = "SWTG024AS-V2.0",
@@ -1002,25 +991,6 @@ __code const struct machine machine = {
             },
     };
 
-void machine_custom_init(void)
-{
-    uint16_t pval;
-
-    reg_bit_set(RTL837X_REG_LED_GLB_IO_EN, 6);
-    reg_bit_set(RTL837X_REG_LED_MODE, 17);
-    reg_bit_clear(RTL837X_REG_LED_MODE, 9);
-    reg_bit_clear(RTL837X_REG_LED_MODE, 7);
-
-    // OEM firmware sets these companion SDS0 polarity bits for the RTL8221B.
-    sds_read(0, 0, 0);
-    pval = SFR_DATA_U16;
-    sds_write_v(0, 0, 0, pval | 0x100);
-
-    sds_read(0, 6, 2);
-    pval = SFR_DATA_U16;
-    sds_write_v(0, 6, 2, pval | 0x4000);
-}
-
 #elif defined MACHINE_ZX310S_4T2XT
 __code const struct machine machine = {
 	.machine_name = "ZX310S_4T2XT",
@@ -1058,12 +1028,6 @@ __code const struct machine machine = {
 		    },
 };
 
-void machine_custom_init(void) {
-	// For this device, the reset value of RTL837X_PIN_MUX_0 is 0x30000000,
-	// which would disables all LEDS, enable them manually:
-	REG_SET(RTL837X_PIN_MUX_0, 0x30db68bf);
-}
-
 #elif defined MACHINE_FG_4GT_2SX_V2_0
 __code const struct machine machine = {
 	.machine_name = "FG-4GT-2SX_V2.0",
@@ -1130,10 +1094,6 @@ __code const struct machine machine = {
 		},
 	};
 
-void machine_custom_init(void) {
-	REG_SET(RTL837X_REG_LED_GLB_IO_EN, 0x7624155b);
-}
-
 #else
 	#error "Please select a machine type in machine.h"
 #endif

machine.h

@@ -6,9 +6,19 @@
 /*
  * Select your machine type below
  */
+// Legacy KP-9000 4+2 targets. Prefer the PCB-revision-specific targets below.
 // #define MACHINE_KP_9000_6XHML_X2
-// #define MACHINE_KP_9000_6XH_X
 // #define MACHINE_KP_9000_6XH_X2
+
+// KP-9000 4+2 targets by PCB silkscreen revision.
+// #define MACHINE_KP_9000_6XH_X2_V1_1
+// #define MACHINE_KP_9000_6XHML_X2_V1_1
+// #define MACHINE_KP_9000_6XH_X2_V1_2
+// #define MACHINE_KP_9000_6XHML_X2_V1_2
+// #define MACHINE_KP_9000_6XH_X2_V2_1
+// #define MACHINE_KP_9000_6XHML_X2_V2_1
+
+// #define MACHINE_KP_9000_6XH_X
 // #define MACHINE_KP_9000_9XH_X_EU
 // #define MACHINE_KP_9000_9XHML_X_V2_2
 // #define MACHINE_KP_9000_9XHML_X_V3_1
@@ -18,6 +28,7 @@
 // #define MACHINE_HG0402XG_V1_1
 // #define MACHINE_SWTG018AS_A_V_2_0
 // #define MACHINE_SWTGW218AS
+// #define MACHINE_PCB_SWTG018AS_V2_1_0
 // #define MACHINE_PCB_K0402WS_V3
 // #define MACHINE_K0501W_V2_0
 // #define MACHINE_LIANGUO_ZX_SWTGW215AS
@@ -94,6 +105,6 @@ typedef struct machine_runtime
 	uint8_t isN : 1;
 };
 
-void machine_custom_init(void);
+void machine_custom_init(void) __banked;
 
 #endif

machine_init.c

@@ -0,0 +1,122 @@
+/*
+ * Per-machine one-shot boot hooks, hosted in BANK2 so board-specific
+ * tables and code do not consume the common bank.
+ */
+#include <stdint.h>
+#include "machine.h"
+#include "rtl837x_pins.h"
+#include "rtl837x_leds.h"
+#include "rtl837x_sfr.h"
+#include "rtl837x_regs.h"
+#include "rtl837x_common.h"
+
+#pragma codeseg BANK2
+#pragma constseg BANK2
+
+#if defined(MACHINE_KP_9000_6XH_X2) || \
+	defined(MACHINE_KP_9000_6XH_X2_V2_1) || \
+	defined(MACHINE_KP_9000_6XHML_X2_V2_1)
+void machine_custom_init(void) __banked
+{
+	reg_bit_set(RTL837X_REG_LED_GLB_IO_EN, 6);
+}
+
+#elif defined MACHINE_PCB_SWTG018AS_V2_1_0
+// Stock-firmware values for what the LED-set encoding cannot express: the
+// bi-color SFP LED (blue pin at 10G) and the PIN_MUX_0 routing of that pin
+// to the LED controller. Runs after leds_setup(), which covers the rest.
+static __code const struct { uint16_t reg; uint32_t val; } custom_init_regs[] = {
+	{ RTL837X_REG_LED3_0_SET1,   0x00100000UL },
+	{ RTL837X_REG_LED1_0_SET1,   0x01400155UL },
+	{ RTL837X_REG_LED1_0_SET0,   0x01740141UL },
+	{ RTL837X_REG_LED_GLB_IO_EN, 0x7f24977fUL },
+	{ RTL837X_PIN_MUX_0,         0x20db6880UL },
+};
+
+void machine_custom_init(void) __banked
+{
+	uint8_t i;
+	// REG_SET is a multi-statement macro without a do-while wrapper: braces required
+	for (i = 0; i < sizeof(custom_init_regs) / sizeof(custom_init_regs[0]); i++) {
+		REG_SET(custom_init_regs[i].reg, custom_init_regs[i].val);
+	}
+}
+
+#elif defined(MACHINE_PCB_K0402WS_V3) || defined(MACHINE_HI_K0402WS)
+void machine_custom_init(void) __banked
+{
+	reg_bit_set(RTL837X_REG_LED_GLB_IO_EN, 6);
+}
+
+#elif defined MACHINE_FNS1200P
+void machine_custom_init(void) __banked
+{
+    reg_bit_set(RTL837X_REG_LED_GLB_IO_EN, 6);
+}
+
+#elif defined MACHINE_PCB_SWTG024AS_A_2_0_1
+void machine_custom_init(void) __banked
+{
+    reg_bit_set(RTL837X_REG_LED_GLB_IO_EN, 6);
+    reg_bit_set(RTL837X_REG_LED_MODE, 17);
+    reg_bit_clear(RTL837X_REG_LED_MODE, 9);
+    reg_bit_clear(RTL837X_REG_LED_MODE, 7);
+}
+
+#elif defined MACHINE_SWTG024AS_A_2_0_1_5C_1SFP
+void machine_custom_init(void) __banked
+{
+    uint16_t pval;
+
+    reg_bit_set(RTL837X_REG_LED_GLB_IO_EN, 6);
+    reg_bit_set(RTL837X_REG_LED_MODE, 17);
+    reg_bit_clear(RTL837X_REG_LED_MODE, 9);
+    reg_bit_clear(RTL837X_REG_LED_MODE, 7);
+
+    // OEM firmware sets these companion SDS0 polarity bits for the RTL8221B.
+    sds_read(0, 0, 0);
+    pval = SFR_DATA_U16;
+    sds_write_v(0, 0, 0, pval | 0x100);
+
+    sds_read(0, 6, 2);
+    pval = SFR_DATA_U16;
+    sds_write_v(0, 6, 2, pval | 0x4000);
+}
+
+#elif defined MACHINE_SWTG024AS_V2_0
+void machine_custom_init(void) __banked
+{
+    uint16_t pval;
+
+    reg_bit_set(RTL837X_REG_LED_GLB_IO_EN, 6);
+    reg_bit_set(RTL837X_REG_LED_MODE, 17);
+    reg_bit_clear(RTL837X_REG_LED_MODE, 9);
+    reg_bit_clear(RTL837X_REG_LED_MODE, 7);
+
+    // OEM firmware sets these companion SDS0 polarity bits for the RTL8221B.
+    sds_read(0, 0, 0);
+    pval = SFR_DATA_U16;
+    sds_write_v(0, 0, 0, pval | 0x100);
+
+    sds_read(0, 6, 2);
+    pval = SFR_DATA_U16;
+    sds_write_v(0, 6, 2, pval | 0x4000);
+}
+
+#elif defined MACHINE_ZX310S_4T2XT
+void machine_custom_init(void) __banked
+{
+	// For this device, the reset value of RTL837X_PIN_MUX_0 is 0x30000000,
+	// which would disables all LEDS, enable them manually:
+	REG_SET(RTL837X_PIN_MUX_0, 0x30db68bf);
+}
+
+#elif defined MACHINE_FG_4GT_2SX_V2_0
+void machine_custom_init(void) __banked
+{
+	REG_SET(RTL837X_REG_LED_GLB_IO_EN, 0x7624155b);
+}
+
+#else
+void machine_custom_init(void) __banked { }
+#endif

rtl837x_common.h

@@ -8,6 +8,7 @@
 #define SYS_TICK_HZ 200
 
 #define CPU_PORT        9
+#define NUL			'\0'
 
 // Define Port-masks for 9-port devices and 6-port devices
 #define PMASK_9		0x1ff
@@ -125,6 +126,7 @@ extern __xdata struct uip_eth_addr uip_ethaddr;
 
 // Headers for calls in the common code area (HOME/BANK0)
 void print_string_no_syslog(__code char *p);
+void print_string_newline_no_syslog(__code char *p);
 void print_string(__code char *p);
 void print_string_x(__xdata char *p);
 void print_long(uint32_t a);
@@ -134,6 +136,7 @@ void itoa(uint8_t v);
 void print_sfr_data(void);
 void print_phy_data(void);
 void print_cmd_prompt(void);
+void print_phys_port(uint8_t port);
 void phy_write_mask(uint16_t phy_mask, uint8_t dev_id, uint16_t reg, uint16_t v);
 void phy_write(uint8_t phy_id, uint8_t dev_id, uint16_t reg, uint16_t v);
 void phy_read(uint8_t phy_id, uint8_t dev_id, uint16_t reg);
@@ -149,7 +152,8 @@ void sleep(uint16_t t);
 void write_char_no_syslog(char c);
 void write_char(char c);
 void print_reg(uint16_t reg);
-uint8_t sfp_read_reg(uint8_t slot, uint8_t reg);
+bool sfp_read_block(uint8_t slot, uint8_t reg, uint8_t len) __banked __reentrant;
+extern __xdata uint8_t sfp_buf[16];
 void reg_bit_set(uint16_t reg_addr, char bit);
 void reg_bit_clear(uint16_t reg_addr, char bit);
 uint8_t reg_bit_test(uint16_t reg_addr, char bit);
@@ -157,18 +161,20 @@ void sfr_mask_data(uint8_t n, uint8_t mask, uint8_t set);
 void sfr_set_zero(void);
 void reset_chip(void);
 void memcpy(__xdata void * __xdata dst, __xdata const void * __xdata src, uint16_t len);
-void memcpyc(register __xdata uint8_t *dst, register __code uint8_t *src, register uint16_t len);
+void memcpyc(__xdata uint8_t *dst, __code uint8_t *src, uint16_t len);
-void memset(register __xdata uint8_t *dst, register __xdata uint8_t v, register uint8_t len);
+void memset(__xdata uint8_t *dst, __xdata uint8_t v, uint8_t len);
-uint16_t strlen(register __code const char *s);
+uint16_t strlen(__code const char *s);
-uint16_t strlen_x(register __xdata const char *s);
+uint16_t strlen_x(__xdata const char *s);
-uint16_t strtox(register __xdata uint8_t *dst, register __code const char *s);
+uint16_t strtox(__xdata uint8_t *dst, __code const char *s);
-uint16_t strcpy(register __xdata uint8_t *dst, register const char *s);
+uint16_t strcpy(__xdata uint8_t *dst, const char *s);
-char strcmp(register __xdata const uint8_t *a, register __code const uint8_t *b);
+char strcmp(__xdata const uint8_t *a, __code const uint8_t *b);
+bool strstart(__xdata const uint8_t *a, __code const uint8_t *b);
+bool strstart_x(__xdata const uint8_t *a, __xdata const uint8_t *b);
 void tcpip_output(void);
 uint8_t read_flash(uint8_t bank, __code uint8_t *addr);
 void get_random_32(void);
 void read_reg_timer(__xdata uint32_t * tmr);
-void sfp_print_info(uint8_t sfp);
+bool sfp_print_info(uint8_t sfp);
 bool gpio_pin_test(uint8_t pin);
 void set_sys_led_state(uint8_t state);
 void sds_read(uint8_t sds_id, uint8_t page, uint8_t reg);

rtl837x_phy.c

@@ -262,7 +262,7 @@ void phy_set_speed(void) __banked
 {
 	uint16_t v;
 
-	print_string("Setting port "); write_char(machine.log_to_phys_port[phy_settings.port] + '0');
+	print_string("Setting port "); print_phys_port(phy_settings.port);
 	if (machine.n_10g && phy_settings.port == 3)
 		phy_settings.is10g_port = 1;
 	if (machine.n_10g == 2 && phy_settings.port == 8)
@@ -381,7 +381,7 @@ void phy_set_duplex(void) __banked
 {
 	uint16_t v;
 
-	print_string("Setting port "); write_char(machine.log_to_phys_port[phy_settings.port] + '0');
+	print_string("Setting port "); print_phys_port(phy_settings.port);
 	if (phy_settings.duplex)
 		print_string(" to full duplex");
 	else

rtl837x_pins.c

@@ -1,6 +1,11 @@
 #include "rtl837x_pins.h"
 #include "rtl837x_common.h"
+#include "rtl837x_sfr.h"
 #include "rtl837x_regs.h"
+#include "machine.h"
+
+extern __code const struct machine machine;
+extern __xdata uint8_t sfr_data[4];
 
 #pragma codeseg BANK2
 #pragma constseg BANK2
@@ -121,3 +126,56 @@ void gpio_output_setup(uint8_t pin, __xdata uint8_t initial_val) __banked{
 
 	reg_bit_set(gpio_direction_reg(pin), (pin % 32));
 }
+
+
+/*
+ * Read up to 16 consecutive registers of the EEPROM via I2C into sfp_buf
+ */
+bool sfp_read_block(uint8_t slot, uint8_t reg, uint8_t len) __banked __reentrant
+{
+	uint8_t dev;
+	uint8_t val;
+
+	len--;
+	if (len > 15)
+		return false;
+
+	dev = (reg & 0x80) ? 0x51 : 0x50;	// 0x51 holds the diagnostics, 0x50 the module data
+	reg &= 0x7f;
+
+	REG_WRITE(RTL837X_REG_I2C_IN, 0, 0, 0, reg);
+
+	REG_WRITE(RTL837X_REG_I2C_CTRL, 0x00,
+		  0x1 << (I2C_MEM_ADDR_WIDTH - 16) | len,
+		  (dev >> 5) | i2c_bus_from_scl_pin(machine.sfp_port[slot].i2c.scl) << 5
+		  | i2c_bus_from_sda_pin(machine.sfp_port[slot].i2c.sda) << 2,
+		  ((dev << 3) & 0xff) | 0x1);
+
+	do {
+		reg_read(RTL837X_REG_I2C_CTRL);
+	} while (SFR_DATA_0 & 0x1);
+
+	if (SFR_DATA_0 & 0x2)
+		return false;
+
+	for (uint8_t i = 0; i <= len; i++) {
+		switch (i & 0x3) {
+		case 0:
+			reg_read(RTL837X_REG_I2C_OUT + i);
+			val = SFR_DATA_0;
+			break;
+		case 1:
+			val = SFR_DATA_8;
+			break;
+		case 2:
+			val = SFR_DATA_16;
+			break;
+		default:
+			val = SFR_DATA_24;
+			break;
+		}
+		sfp_buf[i] = val;
+	}
+
+	return true;
+}

rtl837x_port.c

@@ -30,7 +30,7 @@ __xdata	uint32_t l2_head;
 
 __xdata struct vlan_settings vlan_settings;
 
-void port_mirror_set(register uint8_t port, __xdata uint16_t rx_pmask, __xdata uint16_t tx_pmask) __banked
+void port_mirror_set(uint8_t port, __xdata uint16_t rx_pmask, __xdata uint16_t tx_pmask) __banked
 {
 	print_string("\nport_mirror_set called \n");
 	print_string("Mirroring port: "); print_byte(port); print_string(" with rx-mask: ");
@@ -162,7 +162,7 @@ void vlan_name_remove(uint16_t vlan) __banked
  * Reads VLAN information from VLAN table
  * Returns data in sfr_data
  */
-int8_t vlan_get(register uint16_t vlan) __banked
+int8_t vlan_get(uint16_t vlan) __banked
 {
 	if (vlan >= 0xfff) // VLAN 4095 is special
 		return -1;
@@ -177,7 +177,7 @@ int8_t vlan_get(register uint16_t vlan) __banked
 }
 
 
-__xdata uint16_t vlan_name(register uint16_t vlan) __banked
+__xdata uint16_t vlan_name(uint16_t vlan) __banked
 {
 	__xdata int16_t i = 0;
 	__xdata uint8_t begin = 1;
@@ -390,10 +390,7 @@ void port_l2_learned(void) __banked
 				print_string("\tlearned\t");
 
 			port |= (sfr_data[3] & 0x3) << 2;
-			if (port < 9)
+			print_phys_port(port);
-				write_char(machine.log_to_phys_port[port] + '0');
-			else
-				print_string("CPU");
 		}
 
 		entry++;
@@ -431,7 +428,7 @@ void port_stats_print(void) __banked
 {
 	print_string("\nPort\tState\tLink\tTxGood\t\tTxBad\t\tRxGood\t\tRxBad\n");
 	for (uint8_t i = machine.min_port; i <= machine.max_port; i++) {
-		write_char('0' + machine.log_to_phys_port[i]); write_char('\t');
+		print_phys_port(i); write_char('\t');
 
 		if (!machine.is_sfp[i]) {
 			phy_read(i, PHY_MMD31, 0xa610);
@@ -508,14 +505,14 @@ void port_stats_print(void) __banked
 }
 
 
-void port_isolate(register uint8_t port, __xdata uint16_t pmask) __banked
+void port_isolate(uint8_t port, __xdata uint16_t pmask) __banked
 {
 	if (port <= machine.max_port)
 		REG_SET(RTL837X_PORT_ISOLATION_BASE + (port << 2), pmask);
 }
 
 
-uint16_t port_isolation_get(register uint8_t port) __banked
+uint16_t port_isolation_get(uint8_t port) __banked
 {
 	if (port > machine.max_port)
 		return 0;
@@ -606,7 +603,7 @@ void port_eee_disable(uint8_t port) __banked
 
 void port_eee_status(uint8_t port) __banked
 {
-	print_string("Port: "); write_char('0' + machine.log_to_phys_port[port]);
+	print_string("Port: "); print_phys_port(port);
 	print_string(": ");
 	if (machine.is_sfp[port]) {
 		print_string("SFP\n");
@@ -801,16 +798,6 @@ void print_port_ingress_filter_mode(vlan_ingress_mode_t mode) __banked
 	}
 }
 
-static void print_phys_port(uint8_t port) __banked
-{
-	if (port >= machine.min_port && port <= machine.max_port)
-		write_char(machine.log_to_phys_port[port] + '0');
-	else if (port == 9)
-		write_char('9');
-	else
-		write_char('?');
-}
-
 void print_vlan_ingress_port(uint8_t log_port) __banked
 {
 	print_phys_port(log_port);write_char('\t');

rtl837x_port.h

@@ -48,8 +48,8 @@ extern __xdata struct vlan_settings vlan_settings;
 uint8_t port_l2_forget(void) __banked;
 void port_l2_learned(void) __banked;
 void port_stats_print(void) __banked;
-int8_t vlan_get(register uint16_t vlan) __banked;
+int8_t vlan_get(uint16_t vlan) __banked;
-__xdata uint16_t vlan_name(register uint16_t vlan) __banked;
+__xdata uint16_t vlan_name(uint16_t vlan) __banked;
 void vlan_name_remove(uint16_t vlan) __banked;
 void vlan_setup(void) __banked;
 void port_pvid_set(uint8_t port, __xdata uint16_t pvid) __banked;
@@ -57,7 +57,7 @@ uint16_t port_pvid_get(uint8_t port) __banked;
 void vlan_create(void) __banked;
 void vlan_delete(uint16_t vlan) __banked;
 void vlan_dump(void) __banked;
-void port_mirror_set(register uint8_t port, __xdata uint16_t rx_pmask, __xdata uint16_t tx_pmask) __banked;
+void port_mirror_set(uint8_t port, __xdata uint16_t rx_pmask, __xdata uint16_t tx_pmask) __banked;
 void port_mirror_del(void) __banked;
 bool port_ingress_filter(__xdata uint8_t port, __xdata vlan_ingress_mode_t type) __banked;
 void port_l2_setup(void) __banked;
@@ -73,7 +73,7 @@ void port_eee_status(uint8_t port) __banked;
 void print_port_ingress_filter_mode(vlan_ingress_mode_t mode) __banked;
 bool port_ingress_vlan_filter_set(__xdata uint8_t port, __xdata bool enabled) __banked;
 bool port_ingress_vlan_filter_get(__xdata uint8_t port) __banked;
-void port_isolate(register uint8_t port, __xdata uint16_t pmask) __banked;
+void port_isolate(uint8_t port, __xdata uint16_t pmask) __banked;
-uint16_t port_isolation_get(register uint8_t port) __banked;
+uint16_t port_isolation_get(uint8_t port) __banked;
 
 #endif

rtl837x_stp.c

@@ -14,6 +14,11 @@
 #include "uip.h"
 #include "machine.h"
 
+// All entry points are __banked and nothing here runs from an interrupt,
+// so the module does not need to stay in the resident bank
+#pragma codeseg BANK2
+#pragma constseg BANK2
+
 extern __code struct machine machine;
 extern __xdata uint8_t sfr_data[4];
 

rtlplayground.c

@@ -140,6 +140,7 @@ __xdata char sfp_module_vendor[2][17];
 __xdata char sfp_module_model[2][17];
 __xdata char sfp_module_serial[2][17];
 __xdata uint8_t sfp_options[2];
+__xdata uint8_t sfp_buf[16];	/* scratch for one I2C transaction, the controller reads at most 16 bytes */
 __xdata uint8_t sfp_speed[2];
 __xdata uint8_t sfp_quirks[2];
 __xdata bool button_last;
@@ -289,6 +290,12 @@ void print_string_no_syslog(__code char *p)
 		write_char_no_syslog(*p++);
 }
 
+void print_string_newline_no_syslog(__code char *p)
+{
+	write_char_no_syslog('\n');
+	print_string_no_syslog(p);
+}
+
 void print_string_x(__xdata char *p)
 {
 	while (*p)
@@ -304,20 +311,20 @@ void memcpy(__xdata void * __xdata dst, __xdata const void * __xdata src, uint16
 		*d++ = *s++;
 }
 
-void memcpyc(register __xdata uint8_t *dst, register __code uint8_t *src, register uint16_t len)
+void memcpyc(__xdata uint8_t *dst, __code uint8_t *src, uint16_t len)
 {
 	while (len--)
 		*dst++ = *src++;
 }
 
 
-void memset(register __xdata uint8_t *dst, register __xdata uint8_t v, register uint8_t len)
+void memset(__xdata uint8_t *dst, __xdata uint8_t v, uint8_t len)
 {
 	while (len--)
 		*dst++ = v;
 }
 
-uint16_t strtox(register __xdata uint8_t *dst, register __code const char *s)
+uint16_t strtox(__xdata uint8_t *dst, __code const char *s)
 {
 	__xdata uint8_t *b = dst;
 	while (*s)
@@ -327,7 +334,7 @@ uint16_t strtox(register __xdata uint8_t *dst, register __code const char *s)
 }
 
 
-uint16_t strlen(register __code const char *s)
+uint16_t strlen(__code const char *s)
 {
 	uint16_t l = 0;
 	while (s[l])
@@ -336,7 +343,7 @@ uint16_t strlen(register __code const char *s)
 }
 
 
-uint16_t strlen_x(register __xdata const char *s)
+uint16_t strlen_x(__xdata const char *s)
 {
 	uint16_t l = 0;
 	while (s[l])
@@ -345,7 +352,7 @@ uint16_t strlen_x(register __xdata const char *s)
 }
 
 
-char strcmp(register __xdata const uint8_t *a, register __code const uint8_t *b)
+char strcmp(__xdata const uint8_t *a, __code const uint8_t *b)
 {
 	uint8_t i = 0;
 
@@ -360,6 +367,32 @@ char strcmp(register __xdata const uint8_t *a, register __code const uint8_t *b)
 }
 
 
+/*
+ * True when b is a prefix of a. Unlike strcmp() the byte after the match is not
+ * compared, and unlike is_word_x() it need not be a separator.
+ */
+bool strstart(__xdata const uint8_t *a, __code const uint8_t *b)
+{
+	uint8_t i = 0;
+
+	while (b[i] && (b[i] == a[i]))
+		i++;
+
+	return !b[i];
+}
+
+
+bool strstart_x(__xdata const uint8_t *a, __xdata const uint8_t *b)
+{
+	uint8_t i = 0;
+
+	while (b[i] && (b[i] == a[i]))
+		i++;
+
+	return !b[i];
+}
+
+
 void print_short(uint16_t a)
 {
 	// allocating the registers first improves the sdcc code here
@@ -634,7 +667,7 @@ void nic_rx_header(uint16_t ring_ptr)
  * data will be returned in the xmem buffer points to
  * ring_ptr is the current position of the RX Ring on the ASIC side
  */
-void nic_rx_packet(register uint16_t buffer, register uint16_t ring_ptr)
+void nic_rx_packet(uint16_t buffer, uint16_t ring_ptr)
 {
 	SFR_NIC_DATA_U16LE = buffer;
 	SFR_NIC_RING_U16LE = ring_ptr;
@@ -780,6 +813,19 @@ void print_reg(uint16_t reg)
 	print_sfr_data();
 }
 
+// Print the physical port of a logical port number.
+void print_phys_port(uint8_t port)
+{
+	if (port < CPU_PORT)
+		write_char(machine.log_to_phys_port[port] + '0');
+	else if (port == CPU_PORT)
+		print_string("CPU");
+	else {
+		print_string("UNKNOWN ");
+		write_char(port + '0');
+	}
+}
+
 
 /*
 // TODO: This uses 2 DSEG bytes and is not used!
@@ -1036,37 +1082,6 @@ void sds_config(uint8_t sds, uint8_t mode)
 }
 
 
-/*
- * Read a register of the EEPROM via I2C
- */
-uint8_t sfp_read_reg(uint8_t slot, uint8_t reg)
-{
-	if (reg & 0x80) {	// Configure SFP readings address (0x51) as I2C device address
-		reg &= 0x7f;
-		REG_WRITE(RTL837X_REG_I2C_CTRL, 0x00, 0x1 << (I2C_MEM_ADDR_WIDTH-16) | 0,  0x51 >> 5, (0x51 << 3) & 0xff);
-	} else {
-		REG_WRITE(RTL837X_REG_I2C_CTRL, 0x00, 0x1 << (I2C_MEM_ADDR_WIDTH-16) | 0,  0x50 >> 5, (0x50 << 3) & 0xff);
-	}
-
-	reg_read_m(RTL837X_REG_I2C_CTRL);
-	sfr_mask_data(1, 0xfc, i2c_bus_from_scl_pin(machine.sfp_port[slot].i2c.scl) << 5 | i2c_bus_from_sda_pin(machine.sfp_port[slot].i2c.sda) << 2);
-	reg_write_m(RTL837X_REG_I2C_CTRL);
-
-	REG_WRITE(RTL837X_REG_I2C_IN, 0, 0, 0, reg);
-
-	// Execute I2C Read
-	reg_bit_set(RTL837X_REG_I2C_CTRL, 0);
-
-	// Wait for execution to finish
-	do {
-		reg_read_m(RTL837X_REG_I2C_CTRL);
-	} while (sfr_data[3] & 0x1);
-
-	reg_read_m(RTL837X_REG_I2C_OUT);
-	return sfr_data[3];
-}
-
-
 /*
  * Adds TX Header to uip_buf and calls nic_tx_packet to send the packet
  * over the wire
@@ -1205,7 +1220,7 @@ void handle_tx(void)
 }
 
 
-static inline uint8_t sfp_rate_to_sds_config(register uint8_t rate)
+static inline uint8_t sfp_rate_to_sds_config(uint8_t rate)
 {
 	if (rate == 0x1 || rate == 0x2)
 		return SDS_100FX;
@@ -1219,36 +1234,46 @@ static inline uint8_t sfp_rate_to_sds_config(register uint8_t rate)
 }
 
 
-void sfp_print_info(uint8_t sfp)
+bool sfp_print_info(uint8_t sfp)
 {
 	// This loops over the Vendor-name, Vendor OUI, Vendor PN and Vendor rev ASCII fields
-	for (uint8_t i = 20; i < 60; i++) {
+	for (uint8_t i = 16; i < 64; i++) {
-		if (i >= 36 && i < 40) // Skip Non-ASCII codes
+		if (!(i & 0xf) && !sfp_read_block(sfp, i, 16))
+			return false;
+		if (i < 20 || i >= 60 || (i >= 36 && i < 40)) // Skip Non-ASCII codes
 			continue;
-		uint8_t c = sfp_read_reg(sfp, i);
+		uint8_t c = sfp_buf[i & 0xf];
 		if (c)
 			write_char(c);
 	}
 	print_string("\n");
+
+	return true;
 }
 
 // Normalize strings from EEPROM by removing any trailing spaces; this allows simpler comparisons
-void sfp_read_field(__xdata char *dst, uint8_t sfp, uint8_t start, uint8_t length) __reentrant
+bool sfp_read_field(__xdata char *dst, uint8_t sfp, uint8_t start, uint8_t length) __reentrant
 {
-	dst[length] = '\0';
+	if (!sfp_read_block(sfp, start, length))
+		return false;
 
-	for (uint8_t i = 0; i < length; i++)
+	dst[length] = NUL;
-		dst[i] = sfp_read_reg(sfp, start + i);
+	memcpy(dst, sfp_buf, length);
 
 	while (length > 0 && dst[--length] == ' ')
-		dst[length] = '\0';
+		dst[length] = NUL;
+
+	return true;
 }
 
-void sfp_get_info(uint8_t sfp)
+bool sfp_get_info(uint8_t sfp)
 {
-	sfp_read_field(sfp_module_vendor[sfp], sfp, 20, 16);
+	if (!sfp_read_field(sfp_module_vendor[sfp], sfp, 20, 16))
-	sfp_read_field(sfp_module_model[sfp], sfp, 40, 16);
+		return false;
-	sfp_read_field(sfp_module_serial[sfp], sfp, 68, 16);
+	if (!sfp_read_field(sfp_module_model[sfp], sfp, 40, 16))
+		return false;
+
+	return sfp_read_field(sfp_module_serial[sfp], sfp, 68, 16);
 }
 
 void sfp_apply_quirks(uint8_t sfp) __reentrant
@@ -1267,7 +1292,7 @@ void sfp_apply_quirks(uint8_t sfp) __reentrant
 		if (!(sfp_options[sfp] & 0x40)) {
 			// The module reports that DDM is not implemented, but try a dummy read to confirm
 			// 0xff would mean a failed I2C read or an impossible (per spec) voltage greater than 6.5V
-			if (sfp_read_reg(sfp, 226) != 0xff) {
+			if (sfp_read_block(sfp, 226, 1) && sfp_buf[0] != 0xff) {
 				sfp_options[sfp] |= 0x40;
 			}
 		}
@@ -1291,17 +1316,17 @@ void setup_sfp_gpio(void)
 	}
 }
 
-void handle_sfp(void)
+static bool sfp_module_read(uint8_t sfp)
 {
-	for (uint8_t sfp = 0; sfp < machine.n_sfp; sfp++) {
+	uint8_t rate;
-		if (!gpio_pin_test(machine.sfp_port[sfp].pin_detect)) {
+
-			if (sfp_pins_last & (0x1 << (sfp << 2))) {
-				sfp_pins_last &= ~(0x01 << (sfp << 2));
-				print_string("\n<MODULE INSERTED>  Slot: "); write_char('1' + sfp);
 	// Read Reg 11: Encoding, see SFF-8472 and SFF-8024
 	// Read Reg 12: Signalling rate (including overhead) in 100Mbit: 0xd: 1Gbit, 0x67:10Gbit
 	delay(100); // Delay, because some modules need time to wake up
-				uint8_t rate = sfp_read_reg(sfp, 12);
+	if (!sfp_read_block(sfp, 11, 2))
+		return false;
+
+	rate = sfp_buf[1];
 	if (sfp_speed[sfp] == SFP_SPEED_100M)
 		rate = 0x1;
 	else if (sfp_speed[sfp] == SFP_SPEED_1G)
@@ -1311,13 +1336,36 @@ void handle_sfp(void)
 	else if (sfp_speed[sfp] == SFP_SPEED_10G)
 		rate = 0x69;
 	print_string("  Rate: "); print_byte(rate);  // Normally 1, but 0 for DAC, can be ignored?
-				print_string("  Encoding: "); print_byte(sfp_read_reg(sfp, 11));
+	print_string("  Encoding: "); print_byte(sfp_buf[0]);
-				print_string("  Module: "); sfp_print_info(sfp);
+	print_string("  Module: ");
+	if (!sfp_print_info(sfp))
+		return false;
 	print_string("\n");
-				sfp_options[sfp] = sfp_read_reg(sfp, 92);
+
-				sfp_get_info(sfp);
+	if (!sfp_read_block(sfp, 92, 1))
+		return false;
+	sfp_options[sfp] = sfp_buf[0];
+	if (!sfp_get_info(sfp))
+		return false;
+
 	sfp_apply_quirks(sfp);
 	sds_config(machine.sfp_port[sfp].sds, sfp_rate_to_sds_config(rate));
+
+	return true;
+}
+
+
+void handle_sfp(void)
+{
+	for (uint8_t sfp = 0; sfp < machine.n_sfp; sfp++) {
+		if (!gpio_pin_test(machine.sfp_port[sfp].pin_detect)) {
+			if (sfp_pins_last & (0x1 << (sfp << 2))) {
+				sfp_pins_last &= ~(0x01 << (sfp << 2));
+				print_string("\n<MODULE INSERTED>  Slot: "); write_char('1' + sfp);
+				if (!sfp_module_read(sfp)) {
+					print_string("SFP: an I2C read failed, retrying on the next poll\n");
+					sfp_pins_last |= 0x01 << (sfp << 2);
+				}
 			}
 		} else {
 			if (!(sfp_pins_last & (0x1 << (sfp << 2)))) {
@@ -2021,7 +2069,7 @@ void check_and_flash_update_image(void)
  * because itohex() is inline and brings its own frame. */
 void set_hostname_default(void)
 {
-	if (hostname[0] != '\0')
+	if (hostname[0] != NUL)
 		return;
 
 	strcpy((__xdata uint8_t *)hostname, "RTLPlayground-");
@@ -2031,7 +2079,7 @@ void set_hostname_default(void)
 	hostname[17] = hex[uip_ethaddr.addr[4] & 0xf];
 	hostname[18] = hex[uip_ethaddr.addr[5] >> 4];
 	hostname[19] = hex[uip_ethaddr.addr[5] & 0xf];
-	hostname[20] = '\0';
+	hostname[20] = NUL;
 }
 
 

syslog.c

@@ -30,16 +30,16 @@ void syslog_start(void) __banked
 		uip_ipaddr(server_ip, state.server_ip[0], state.server_ip[1], state.server_ip[2], state.server_ip[3]);
 		state.syslog_conn = uip_udp_new(&server_ip, HTONS(514));
 		if (state.syslog_conn == 0) {
-			print_string_no_syslog("Failed to create a new UDP client\n");
+			print_string_newline_no_syslog("Failed to create a new UDP client");
 			return;
 		}
-		print_string_no_syslog("Started syslog to IP ");
+		print_string_newline_no_syslog("Started syslog to IP ");
 		itoa(state.server_ip[0]); write_char('.'); itoa(state.server_ip[1]); write_char('.');
 		itoa(state.server_ip[2]); write_char('.'); itoa(state.server_ip[3]); write_char('\n');
 		state.enabled = 1;
 	}
 	else {
-		print_string_no_syslog("Syslog is already running\n");
+		print_string_newline_no_syslog("Syslog is already running");
 	}
 }
 
@@ -49,9 +49,9 @@ void syslog_stop(void) __banked
 	if (state.syslog_conn != 0) {
 		uip_udp_remove(state.syslog_conn);
 		state.syslog_conn = 0;
-		print_string_no_syslog("Stopped syslog\n");
+		print_string_newline_no_syslog("Stopped syslog");
 	} else {
-		print_string_no_syslog("Syslog is not running\n");
+		print_string_newline_no_syslog("Syslog is not running");
 	}
 }
 
@@ -62,19 +62,19 @@ void syslog_callback(uint16_t lport) __banked
 
 	if ((state.readptr != state.writeptr) && state.line_available)
 	{
-		int16_t log_size = state.writeptr - state.readptr;
+		__xdata int16_t log_size = state.writeptr - state.readptr;
 		if (log_size < 0)
 			log_size += LOGBUF_SIZE;
 		
 		// Skipping linefeeds at the start of the log line
-		uint16_t log_start = state.readptr;
+		__xdata uint16_t log_start = state.readptr;
 		while (log_size > 0 && logbuf[log_start] == '\n') {
 			log_start = (log_start + 1) & (LOGBUF_SIZE - 1);
 			log_size--;
 		}
 
 		// Skipping linefeeds and whitespaces at the end of the log line
-		uint16_t log_end = state.writeptr;
+		__xdata uint16_t log_end = state.writeptr;
 		while ( (log_size > 0) && 
 				((logbuf[(log_end-1) & (LOGBUF_SIZE - 1)] == '\n') ||
 				 (logbuf[(log_end-1) & (LOGBUF_SIZE - 1)] == ' ')))

uip/psock.c

@@ -75,8 +75,7 @@
 /*---------------------------------------------------------------------------*/
 
 inline void
-buf_setup(register __xdata struct psock_buf *buf,
+buf_setup(__xdata struct psock_buf *buf, __xdata u8_t *bufptr, u16_t bufsize)
-	  register __xdata u8_t *bufptr, register u16_t bufsize)
 {
   buf->ptr = bufptr;
   buf->left = bufsize;
@@ -84,7 +83,7 @@ buf_setup(register __xdata struct psock_buf *buf,
 
 /*---------------------------------------------------------------------------*/
 inline u8_t
-buf_bufdata(register __xdata struct psock_buf *buf, register __xdata u8_t **dataptr, register __xdata u16_t *datalen)
+buf_bufdata(__xdata struct psock_buf *buf, __xdata u8_t **dataptr, __xdata u16_t *datalen)
 {
   if(*datalen < buf->left) {
     memcpy(buf->ptr, *dataptr, *datalen);
@@ -145,7 +144,7 @@ buf_bufto(__xdata struct psock_buf *buf, u8_t endmarker,
 }
 /*---------------------------------------------------------------------------*/
 static char
-send_data(register __xdata struct psock *s)
+send_data(__xdata struct psock *s)
 {
   if(s->state != STATE_DATA_SENT || uip_rexmit()) {
     if(s->sendlen > uip_mss()) {
@@ -160,7 +159,7 @@ send_data(register __xdata struct psock *s)
 }
 /*---------------------------------------------------------------------------*/
 static char
-data_acked(register __xdata struct psock *s)
+data_acked(__xdata struct psock *s)
 {
   if(s->state == STATE_DATA_SENT && uip_acked()) {
     if(s->sendlen > uip_mss()) {
@@ -176,8 +175,7 @@ data_acked(register __xdata struct psock *s)
   return 0;
 }
 /*---------------------------------------------------------------------------*/
-PT_THREAD(psock_send(register __xdata struct psock *s, register __xdata const char *buf,
+PT_THREAD(psock_send(__xdata struct psock *s, __xdata const char *buf, uint16_t len))
-		     register uint16_t len))
 {
   PT_BEGIN(&s->psockpt);
 
@@ -218,7 +216,7 @@ PT_THREAD(psock_send(register __xdata struct psock *s, register __xdata const ch
 
 
 /*---------------------------------------------------------------------------*/
-// PT_THREAD(psock_generator_send(register __xdata struct psock *s,
+// PT_THREAD(psock_generator_send(__xdata struct psock *s,
 // 			       unsigned short (*generate)(void *), void *arg))
 // {
 //   PT_BEGIN(&s->psockpt);
@@ -275,7 +273,7 @@ psock_newdata(__xdata struct psock *s)
   }
 }
 /*---------------------------------------------------------------------------*/
-PT_THREAD(psock_readto(register __xdata struct psock *psock, unsigned char c))
+PT_THREAD(psock_readto(__xdata struct psock *psock, unsigned char c))
 {
   PT_BEGIN(&psock->psockpt);
 
@@ -304,7 +302,7 @@ PT_THREAD(psock_readto(register __xdata struct psock *psock, unsigned char c))
   PT_END(&psock->psockpt);
 }
 /*---------------------------------------------------------------------------*/
-PT_THREAD(psock_readbuf(register __xdata struct psock *psock))
+PT_THREAD(psock_readbuf(__xdata struct psock *psock))
 {
   PT_BEGIN(&psock->psockpt);
 
@@ -334,7 +332,7 @@ PT_THREAD(psock_readbuf(register __xdata struct psock *psock))
 }
 /*---------------------------------------------------------------------------*/
 void
-psock_init(register __xdata struct psock *psock, register __xdata char *buffer, register uint16_t buffersize)
+psock_init(__xdata struct psock *psock, __xdata char *buffer, uint16_t buffersize)
 {
   psock->state = STATE_NONE;
   psock->readlen = 0;

uip/psock.h

@@ -124,7 +124,7 @@ struct psock {
   u8_t state;                   /* The state of the protosocket. */
 };
 
-void psock_init(__xdata struct psock *psock, register __xdata char *buffer, register uint16_t buffersize);
+void psock_init(__xdata struct psock *psock, __xdata char *buffer, uint16_t buffersize);
 /**
  * Initialize a protosocket.
  *
@@ -158,7 +158,7 @@ void psock_init(__xdata struct psock *psock, register __xdata char *buffer, regi
  */
 #define PSOCK_BEGIN(psock) PT_BEGIN(&((psock)->pt))
 
-PT_THREAD(psock_send(register __xdata struct psock *psock, register __xdata const char *buf, register uint16_t len));
+PT_THREAD(psock_send(__xdata struct psock *psock, __xdata const char *buf, uint16_t len));
 /**
  * Send data.
  *

uip/uip.c

@@ -157,7 +157,7 @@ __xdata u16_t uip_len, uip_slen;
 __xdata u8_t uip_flags;     /* The uip_flags variable is used for
 				communication between the TCP/IP stack
 				and the application program. */
-__xdata struct uip_conn *uip_conn;   /* uip_conn always points to the current
+__xdata struct uip_conn * __xdata uip_conn;   /* uip_conn always points to the current
 				connection. */
 
 __xdata struct uip_conn uip_conns[UIP_CONNS];
@@ -167,7 +167,7 @@ __xdata u16_t uip_listenports[UIP_LISTENPORTS];
                              /* The uip_listenports list all currently
 				listning ports. */
 #if UIP_UDP
-__xdata struct uip_udp_conn *uip_udp_conn;
+__xdata struct uip_udp_conn * __xdata uip_udp_conn;
 __xdata struct uip_udp_conn uip_udp_conns[UIP_UDP_CONNS];
 #endif /* UIP_UDP */
 
@@ -234,7 +234,7 @@ __xdata struct uip_stats uip_stat;
 #endif /* UIP_STATISTICS == 1 */
 
 #if UIP_LOGGING == 1
-#define UIP_LOG(m) print_string_no_syslog(m);
+#define UIP_LOG(m) print_string_newline_no_syslog(m);
 #else
 #define UIP_LOG(m)
 #endif /* UIP_LOGGING == 1 */
@@ -400,7 +400,7 @@ uip_init(void) __banked
 /*---------------------------------------------------------------------------*/
 #if UIP_ACTIVE_OPEN
 __xdata struct uip_conn *
-uip_connect(register __xdata uip_ipaddr_t *ripaddr, __xdata u16_t rport) __banked
+uip_connect(__xdata uip_ipaddr_t *ripaddr, __xdata u16_t rport) __banked
 {
   __xdata struct uip_conn *conn, *cconn;
   
@@ -466,7 +466,7 @@ uip_connect(register __xdata uip_ipaddr_t *ripaddr, __xdata u16_t rport) __banke
 /*---------------------------------------------------------------------------*/
 #if UIP_UDP
 __xdata struct uip_udp_conn *
-uip_udp_new(__xdata uip_ipaddr_t *ripaddr, __xdata u16_t rport) __banked
+uip_udp_new(__xdata uip_ipaddr_t * __xdata ripaddr, __xdata u16_t rport) __banked
 {
   __xdata struct uip_udp_conn *conn;
   
@@ -677,7 +677,7 @@ uip_add_rcv_nxt(u16_t n)
 void
 uip_process(u8_t flag) __banked
 {
-  register __xdata struct uip_conn *uip_connr = uip_conn;
+  __xdata struct uip_conn *uip_connr = uip_conn;
 
 #if UIP_UDP
   if(flag == UIP_UDP_SEND_CONN) {

uip/uip.h

@@ -763,7 +763,7 @@ void uip_send(__xdata const void *data, __xdata uint16_t len) __banked;
  * \return The uip_udp_conn structure for the new connection or NULL
  * if no connection could be allocated.
  */
-__xdata struct uip_udp_conn *uip_udp_new(__xdata uip_ipaddr_t *ripaddr, __xdata u16_t rport) __banked;
+__xdata struct uip_udp_conn *uip_udp_new(__xdata uip_ipaddr_t * __xdata ripaddr, __xdata u16_t rport) __banked;
 
 /**
  * Removed a UDP connection.
@@ -1193,7 +1193,7 @@ struct uip_conn {
  * The uip_conn pointer can be used to access the current TCP
  * connection.
  */
-extern __xdata struct uip_conn *uip_conn;
+extern __xdata struct uip_conn * __xdata uip_conn;
 /* The array containing all uIP connections. */
 extern __xdata struct uip_conn uip_conns[UIP_CONNS];
 /**
@@ -1226,7 +1226,7 @@ struct uip_udp_conn {
 /**
  * The current UDP connection.
  */
-extern __xdata struct uip_udp_conn *uip_udp_conn;
+extern __xdata struct uip_udp_conn * __xdata uip_udp_conn;
 extern __xdata struct uip_udp_conn uip_udp_conns[UIP_UDP_CONNS];
 #endif /* UIP_UDP */
 

uip/uip_arp.c

@@ -175,7 +175,7 @@ uip_arp_timer(void) __banked
 }
 /*-----------------------------------------------------------------------------------*/
 static void
-uip_arp_update(__xdata u16_t *ipaddr, __xdata struct uip_eth_addr *ethaddr)
+uip_arp_update(__xdata u16_t * __xdata ipaddr, __xdata struct uip_eth_addr * __xdata ethaddr)
 {
   uint8_t i;
   /* Walk through the ARP mapping table and try to find an entry to