dummyflasher.c: Remove forward-declarations

Reorder functions to avoid forward-declarations

BUG=b:140394053
TEST=builds

Change-Id: Ibfe9f556316ed509cbec522b4c9cb4c9041e5fdd
Signed-off-by: Anastasia Klimchuk <aklm@chromium.org>
Reviewed-on: https://review.coreboot.org/c/flashrom/+/50712
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Edward O'Callaghan <quasisec@chromium.org>
Reviewed-by: Sam McNally <sammc@google.com>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>

1 files changed, 438 insertions, 450 deletions

diff --git a/dummyflasher.c b/dummyflasher.c
index 92c30ee27..5190282c8 100644
--- a/dummyflasher.c
+++ b/dummyflasher.c
@@ -102,445 +102,8 @@ static const uint8_t sfdp_table[] = {
 #endif
 
 static unsigned int spi_write_256_chunksize = 256;
-
-static int dummy_spi_send_command(const struct flashctx *flash, unsigned int writecnt, unsigned int readcnt,
-				  const unsigned char *writearr, unsigned char *readarr);
-static int dummy_spi_write_256(struct flashctx *flash, const uint8_t *buf,
-			       unsigned int start, unsigned int len);
-static void dummy_chip_writeb(const struct flashctx *flash, uint8_t val, chipaddr addr);
-static void dummy_chip_writew(const struct flashctx *flash, uint16_t val, chipaddr addr);
-static void dummy_chip_writel(const struct flashctx *flash, uint32_t val, chipaddr addr);
-static void dummy_chip_writen(const struct flashctx *flash, const uint8_t *buf, chipaddr addr, size_t len);
-static uint8_t dummy_chip_readb(const struct flashctx *flash, const chipaddr addr);
-static uint16_t dummy_chip_readw(const struct flashctx *flash, const chipaddr addr);
-static uint32_t dummy_chip_readl(const struct flashctx *flash, const chipaddr addr);
-static void dummy_chip_readn(const struct flashctx *flash, uint8_t *buf, const chipaddr addr, size_t len);
-
-static struct spi_master spi_master_dummyflasher = {
-	.features	= SPI_MASTER_4BA,
-	.max_data_read	= MAX_DATA_READ_UNLIMITED,
-	.max_data_write	= MAX_DATA_UNSPECIFIED,
-	.command	= dummy_spi_send_command,
-	.multicommand	= default_spi_send_multicommand,
-	.read		= default_spi_read,
-	.write_256	= dummy_spi_write_256,
-	.write_aai	= default_spi_write_aai,
-};
-
-static struct par_master par_master_dummy = {
-		.chip_readb		= dummy_chip_readb,
-		.chip_readw		= dummy_chip_readw,
-		.chip_readl		= dummy_chip_readl,
-		.chip_readn		= dummy_chip_readn,
-		.chip_writeb		= dummy_chip_writeb,
-		.chip_writew		= dummy_chip_writew,
-		.chip_writel		= dummy_chip_writel,
-		.chip_writen		= dummy_chip_writen,
-};
-
 static enum chipbustype dummy_buses_supported = BUS_NONE;
 
-static int dummy_shutdown(void *data)
-{
-	msg_pspew("%s\n", __func__);
-#if EMULATE_CHIP
-	struct emu_data *emu_data = (struct emu_data *)data;
-	if (emu_data->emu_chip != EMULATE_NONE) {
-		if (emu_data->emu_persistent_image && emu_data->emu_modified) {
-			msg_pdbg("Writing %s\n", emu_data->emu_persistent_image);
-			write_buf_to_file(flashchip_contents,
-					  emu_data->emu_chip_size,
-					  emu_data->emu_persistent_image);
-			free(emu_data->emu_persistent_image);
-			emu_data->emu_persistent_image = NULL;
-		}
-		free(flashchip_contents);
-	}
-#endif
-	return 0;
-}
-
-int dummy_init(void)
-{
-	char *bustext = NULL;
-	char *tmp = NULL;
-	unsigned int i;
-#if EMULATE_SPI_CHIP
-	char *status = NULL;
-	int size = -1;  /* size for VARIABLE_SIZE chip device */
-#endif
-#if EMULATE_CHIP
-	struct stat image_stat;
-#endif
-
-	struct emu_data *data = calloc(1, sizeof(struct emu_data));
-	if (!data) {
-		msg_perr("Out of memory!\n");
-		return 1;
-	}
-	data->emu_chip = EMULATE_NONE;
-	data->delay_us = 0;
-	spi_master_dummyflasher.data = data;
-	par_master_dummy.data = data;
-
-	msg_pspew("%s\n", __func__);
-
-	bustext = extract_programmer_param("bus");
-	msg_pdbg("Requested buses are: %s\n", bustext ? bustext : "default");
-	if (!bustext)
-		bustext = strdup("parallel+lpc+fwh+spi");
-	/* Convert the parameters to lowercase. */
-	tolower_string(bustext);
-
-	dummy_buses_supported = BUS_NONE;
-	if (strstr(bustext, "parallel")) {
-		dummy_buses_supported |= BUS_PARALLEL;
-		msg_pdbg("Enabling support for %s flash.\n", "parallel");
-	}
-	if (strstr(bustext, "lpc")) {
-		dummy_buses_supported |= BUS_LPC;
-		msg_pdbg("Enabling support for %s flash.\n", "LPC");
-	}
-	if (strstr(bustext, "fwh")) {
-		dummy_buses_supported |= BUS_FWH;
-		msg_pdbg("Enabling support for %s flash.\n", "FWH");
-	}
-	if (strstr(bustext, "spi")) {
-		dummy_buses_supported |= BUS_SPI;
-		msg_pdbg("Enabling support for %s flash.\n", "SPI");
-	}
-	if (dummy_buses_supported == BUS_NONE)
-		msg_pdbg("Support for all flash bus types disabled.\n");
-	free(bustext);
-
-	tmp = extract_programmer_param("spi_write_256_chunksize");
-	if (tmp) {
-		spi_write_256_chunksize = atoi(tmp);
-		free(tmp);
-		if (spi_write_256_chunksize < 1) {
-			msg_perr("invalid spi_write_256_chunksize\n");
-			return 1;
-		}
-	}
-
-	tmp = extract_programmer_param("spi_blacklist");
-	if (tmp) {
-		i = strlen(tmp);
-		if (!strncmp(tmp, "0x", 2)) {
-			i -= 2;
-			memmove(tmp, tmp + 2, i + 1);
-		}
-		if ((i > 512) || (i % 2)) {
-			msg_perr("Invalid SPI command blacklist length\n");
-			free(tmp);
-			return 1;
-		}
-		data->spi_blacklist_size = i / 2;
-		for (i = 0; i < data->spi_blacklist_size * 2; i++) {
-			if (!isxdigit((unsigned char)tmp[i])) {
-				msg_perr("Invalid char \"%c\" in SPI command "
-					 "blacklist\n", tmp[i]);
-				free(tmp);
-				return 1;
-			}
-		}
-		for (i = 0; i < data->spi_blacklist_size; i++) {
-			unsigned int tmp2;
-			/* SCNx8 is apparently not supported by MSVC (and thus
-			 * MinGW), so work around it with an extra variable
-			 */
-			sscanf(tmp + i * 2, "%2x", &tmp2);
-			data->spi_blacklist[i] = (uint8_t)tmp2;
-		}
-		msg_pdbg("SPI blacklist is ");
-		for (i = 0; i < data->spi_blacklist_size; i++)
-			msg_pdbg("%02x ", data->spi_blacklist[i]);
-		msg_pdbg(", size %u\n", data->spi_blacklist_size);
-	}
-	free(tmp);
-
-	tmp = extract_programmer_param("spi_ignorelist");
-	if (tmp) {
-		i = strlen(tmp);
-		if (!strncmp(tmp, "0x", 2)) {
-			i -= 2;
-			memmove(tmp, tmp + 2, i + 1);
-		}
-		if ((i > 512) || (i % 2)) {
-			msg_perr("Invalid SPI command ignorelist length\n");
-			free(tmp);
-			return 1;
-		}
-		data->spi_ignorelist_size = i / 2;
-		for (i = 0; i < data->spi_ignorelist_size * 2; i++) {
-			if (!isxdigit((unsigned char)tmp[i])) {
-				msg_perr("Invalid char \"%c\" in SPI command "
-					 "ignorelist\n", tmp[i]);
-				free(tmp);
-				return 1;
-			}
-		}
-		for (i = 0; i < data->spi_ignorelist_size; i++) {
-			unsigned int tmp2;
-			/* SCNx8 is apparently not supported by MSVC (and thus
-			 * MinGW), so work around it with an extra variable
-			 */
-			sscanf(tmp + i * 2, "%2x", &tmp2);
-			data->spi_ignorelist[i] = (uint8_t)tmp2;
-		}
-		msg_pdbg("SPI ignorelist is ");
-		for (i = 0; i < data->spi_ignorelist_size; i++)
-			msg_pdbg("%02x ", data->spi_ignorelist[i]);
-		msg_pdbg(", size %u\n", data->spi_ignorelist_size);
-	}
-	free(tmp);
-
-	/* frequency to emulate in Hz (default), KHz, or MHz */
-	tmp = extract_programmer_param("freq");
-	if (tmp) {
-		unsigned long int freq;
-		char *units = tmp;
-		char *end = tmp + strlen(tmp);
-
-		errno = 0;
-		freq = strtoul(tmp, &units, 0);
-		if (errno) {
-			msg_perr("Invalid frequency \"%s\", %s\n",
-					tmp, strerror(errno));
-			free(tmp);
-			return 1;
-		}
-
-		if ((units > tmp) && (units < end)) {
-			int units_valid = 0;
-
-			if (units < end - 3) {
-				;
-			} else if (units == end - 2) {
-				if (!strcasecmp(units, "hz"))
-					units_valid = 1;
-			} else if (units == end - 3) {
-				if (!strcasecmp(units, "khz")) {
-					freq *= 1000;
-					units_valid = 1;
-				} else if (!strcasecmp(units, "mhz")) {
-					freq *= 1000000;
-					units_valid = 1;
-				}
-			}
-
-			if (!units_valid) {
-				msg_perr("Invalid units: %s\n", units);
-				free(tmp);
-				return 1;
-			}
-		}
-
-		/* Assume we only work with bytes and transfer at 1 bit/Hz */
-		data->delay_us = (1000000 * 8) / freq;
-	}
-	free(tmp);
-
-#if EMULATE_CHIP
-#if EMULATE_SPI_CHIP
-	tmp = extract_programmer_param("size");
-	if (tmp) {
-		size = strtol(tmp, NULL, 10);
-		if (size <= 0 || (size % 1024 != 0)) {
-			msg_perr("%s: Chip size is not a multipler of 1024: %s\n",
-					 __func__, tmp);
-			free(tmp);
-			return 1;
-		}
-		free(tmp);
-	}
-#endif
-
-	tmp = extract_programmer_param("emulate");
-	if (!tmp) {
-		msg_pdbg("Not emulating any flash chip.\n");
-		/* Nothing else to do. */
-		goto dummy_init_out;
-	}
-#if EMULATE_SPI_CHIP
-	if (!strcmp(tmp, "M25P10.RES")) {
-		data->emu_chip = EMULATE_ST_M25P10_RES;
-		data->emu_chip_size = 128 * 1024;
-		data->emu_max_byteprogram_size = 128;
-		data->emu_max_aai_size = 0;
-		data->emu_jedec_se_size = 0;
-		data->emu_jedec_be_52_size = 0;
-		data->emu_jedec_be_d8_size = 32 * 1024;
-		data->emu_jedec_ce_60_size = 0;
-		data->emu_jedec_ce_c7_size = data->emu_chip_size;
-		msg_pdbg("Emulating ST M25P10.RES SPI flash chip (RES, page "
-			 "write)\n");
-	}
-	if (!strcmp(tmp, "SST25VF040.REMS")) {
-		data->emu_chip = EMULATE_SST_SST25VF040_REMS;
-		data->emu_chip_size = 512 * 1024;
-		data->emu_max_byteprogram_size = 1;
-		data->emu_max_aai_size = 0;
-		data->emu_jedec_se_size = 4 * 1024;
-		data->emu_jedec_be_52_size = 32 * 1024;
-		data->emu_jedec_be_d8_size = 0;
-		data->emu_jedec_ce_60_size = data->emu_chip_size;
-		data->emu_jedec_ce_c7_size = 0;
-		msg_pdbg("Emulating SST SST25VF040.REMS SPI flash chip (REMS, "
-			 "byte write)\n");
-	}
-	if (!strcmp(tmp, "SST25VF032B")) {
-		data->emu_chip = EMULATE_SST_SST25VF032B;
-		data->emu_chip_size = 4 * 1024 * 1024;
-		data->emu_max_byteprogram_size = 1;
-		data->emu_max_aai_size = 2;
-		data->emu_jedec_se_size = 4 * 1024;
-		data->emu_jedec_be_52_size = 32 * 1024;
-		data->emu_jedec_be_d8_size = 64 * 1024;
-		data->emu_jedec_ce_60_size = data->emu_chip_size;
-		data->emu_jedec_ce_c7_size = data->emu_chip_size;
-		msg_pdbg("Emulating SST SST25VF032B SPI flash chip (RDID, AAI "
-			 "write)\n");
-	}
-	if (!strcmp(tmp, "MX25L6436")) {
-		data->emu_chip = EMULATE_MACRONIX_MX25L6436;
-		data->emu_chip_size = 8 * 1024 * 1024;
-		data->emu_max_byteprogram_size = 256;
-		data->emu_max_aai_size = 0;
-		data->emu_jedec_se_size = 4 * 1024;
-		data->emu_jedec_be_52_size = 32 * 1024;
-		data->emu_jedec_be_d8_size = 64 * 1024;
-		data->emu_jedec_ce_60_size = data->emu_chip_size;
-		data->emu_jedec_ce_c7_size = data->emu_chip_size;
-		msg_pdbg("Emulating Macronix MX25L6436 SPI flash chip (RDID, "
-			 "SFDP)\n");
-	}
-	if (!strcmp(tmp, "W25Q128FV")) {
-		data->emu_chip = EMULATE_WINBOND_W25Q128FV;
-		data->emu_chip_size = 16 * 1024 * 1024;
-		data->emu_max_byteprogram_size = 256;
-		data->emu_max_aai_size = 0;
-		data->emu_jedec_se_size = 4 * 1024;
-		data->emu_jedec_be_52_size = 32 * 1024;
-		data->emu_jedec_be_d8_size = 64 * 1024;
-		data->emu_jedec_ce_60_size = data->emu_chip_size;
-		data->emu_jedec_ce_c7_size = data->emu_chip_size;
-		msg_pdbg("Emulating Winbond W25Q128FV SPI flash chip (RDID)\n");
-	}
-
-	/* The name of variable-size virtual chip. A 4 MiB flash example:
-	 *   flashrom -p dummy:emulate=VARIABLE_SIZE,size=4194304
-	 */
-	if (!strcmp(tmp, "VARIABLE_SIZE")) {
-		if (size == -1) {
-			msg_perr("%s: the size parameter is not given.\n", __func__);
-			free(tmp);
-			return 1;
-		}
-		data->emu_chip = EMULATE_VARIABLE_SIZE;
-		data->emu_chip_size = size;
-		data->emu_max_byteprogram_size = 256;
-		data->emu_max_aai_size = 0;
-		data->emu_jedec_se_size = 4 * 1024;
-		data->emu_jedec_be_52_size = 32 * 1024;
-		data->emu_jedec_be_d8_size = 64 * 1024;
-		data->emu_jedec_ce_60_size = data->emu_chip_size;
-		data->emu_jedec_ce_c7_size = data->emu_chip_size;
-		msg_pdbg("Emulating generic SPI flash chip (size=%d bytes)\n",
-		         data->emu_chip_size);
-	}
-#endif
-	if (data->emu_chip == EMULATE_NONE) {
-		msg_perr("Invalid chip specified for emulation: %s\n", tmp);
-		free(tmp);
-		return 1;
-	}
-	free(tmp);
-
-	/* Should emulated flash erase to zero (yes/no)? */
-	tmp = extract_programmer_param("erase_to_zero");
-	if (tmp) {
-		if (!strcmp(tmp, "yes")) {
-			msg_pdbg("Emulated chip will erase to 0x00\n");
-			data->erase_to_zero = 1;
-		} else if (!strcmp(tmp, "no")) {
-			msg_pdbg("Emulated chip will erase to 0xff\n");
-		} else {
-			msg_perr("erase_to_zero can be \"yes\" or \"no\"\n");
-			free(tmp);
-			return 1;
-		}
-	}
-	free(tmp);
-
-	flashchip_contents = malloc(data->emu_chip_size);
-	if (!flashchip_contents) {
-		msg_perr("Out of memory!\n");
-		return 1;
-	}
-
-#ifdef EMULATE_SPI_CHIP
-	status = extract_programmer_param("spi_status");
-	if (status) {
-		char *endptr;
-		errno = 0;
-		data->emu_status = strtoul(status, &endptr, 0);
-		free(status);
-		if (errno != 0 || status == endptr) {
-			msg_perr("Error: initial status register specified, "
-				 "but the value could not be converted.\n");
-			return 1;
-		}
-		msg_pdbg("Initial status register is set to 0x%02x.\n",
-			 data->emu_status);
-	}
-#endif
-
-	msg_pdbg("Filling fake flash chip with 0x%02x, size %i\n",
-			data->erase_to_zero ? 0x00 : 0xff, data->emu_chip_size);
-	memset(flashchip_contents, data->erase_to_zero ? 0x00 : 0xff, data->emu_chip_size);
-
-	/* Will be freed by shutdown function if necessary. */
-	data->emu_persistent_image = extract_programmer_param("image");
-	if (!data->emu_persistent_image) {
-		/* Nothing else to do. */
-		goto dummy_init_out;
-	}
-	/* We will silently (in default verbosity) ignore the file if it does not exist (yet) or the size does
-	 * not match the emulated chip. */
-	if (!stat(data->emu_persistent_image, &image_stat)) {
-		msg_pdbg("Found persistent image %s, %jd B ",
-			 data->emu_persistent_image, (intmax_t)image_stat.st_size);
-		if ((uintmax_t)image_stat.st_size == data->emu_chip_size) {
-			msg_pdbg("matches.\n");
-			msg_pdbg("Reading %s\n", data->emu_persistent_image);
-			if (read_buf_from_file(flashchip_contents, data->emu_chip_size,
-					   data->emu_persistent_image)) {
-				msg_perr("Unable to read %s\n", data->emu_persistent_image);
-				free(flashchip_contents);
-				return 1;
-			}
-		} else {
-			msg_pdbg("doesn't match.\n");
-		}
-	}
-#endif
-
-dummy_init_out:
-	if (register_shutdown(dummy_shutdown, data)) {
-		free(flashchip_contents);
-		free(data);
-		return 1;
-	}
-	if (dummy_buses_supported & (BUS_PARALLEL | BUS_LPC | BUS_FWH))
-		register_par_master(&par_master_dummy,
-				    dummy_buses_supported & (BUS_PARALLEL | BUS_LPC | BUS_FWH));
-	if (dummy_buses_supported & BUS_SPI)
-		register_spi_master(&spi_master_dummyflasher);
-
-	return 0;
-}
-
 void *dummy_map(const char *descr, uintptr_t phys_addr, size_t len)
 {
 	msg_pspew("%s: Mapping %s, 0x%zx bytes at 0x%0*" PRIxPTR "\n",
@@ -553,6 +116,12 @@ void dummy_unmap(void *virt_addr, size_t len)
 	msg_pspew("%s: Unmapping 0x%zx bytes at %p\n", __func__, len, virt_addr);
 }
 
+static int dummy_spi_write_256(struct flashctx *flash, const uint8_t *buf, unsigned int start, unsigned int len)
+{
+	return spi_write_chunked(flash, buf, start, len,
+				 spi_write_256_chunksize);
+}
+
 static void dummy_chip_writeb(const struct flashctx *flash, uint8_t val, chipaddr addr)
 {
 	msg_pspew("%s: addr=0x%" PRIxPTR ", val=0x%02x\n", __func__, addr, val);
@@ -604,6 +173,16 @@ static void dummy_chip_readn(const struct flashctx *flash, uint8_t *buf, const c
 	return;
 }
 
+static struct emu_data* get_data_from_context(const struct flashctx *flash)
+{
+	if (dummy_buses_supported & (BUS_PARALLEL | BUS_LPC | BUS_FWH))
+		return (struct emu_data *)flash->mst->par.data;
+	else if (dummy_buses_supported & BUS_SPI)
+		return (struct emu_data *)flash->mst->spi.data;
+
+	return NULL;	/* buses was set to BUS_NONE. */
+}
+
 #if EMULATE_SPI_CHIP
 static int emulate_spi_chip_response(unsigned int writecnt,
 				     unsigned int readcnt,
@@ -983,16 +562,6 @@ static int emulate_spi_chip_response(unsigned int writecnt,
 }
 #endif
 
-static struct emu_data* get_data_from_context(const struct flashctx *flash)
-{
-	if (dummy_buses_supported & (BUS_PARALLEL | BUS_LPC | BUS_FWH))
-		return (struct emu_data *)flash->mst->par.data;
-	else if (dummy_buses_supported & BUS_SPI)
-		return (struct emu_data *)flash->mst->spi.data;
-
-	return NULL;	/* buses was set to BUS_NONE. */
-}
-
 static int dummy_spi_send_command(const struct flashctx *flash, unsigned int writecnt,
 				  unsigned int readcnt,
 				  const unsigned char *writearr,
@@ -1040,10 +609,429 @@ static int dummy_spi_send_command(const struct flashctx *flash, unsigned int wri
 	return 0;
 }
 
-static int dummy_spi_write_256(struct flashctx *flash, const uint8_t *buf, unsigned int start, unsigned int len)
+
+
+static struct spi_master spi_master_dummyflasher = {
+	.features	= SPI_MASTER_4BA,
+	.max_data_read	= MAX_DATA_READ_UNLIMITED,
+	.max_data_write	= MAX_DATA_UNSPECIFIED,
+	.command	= dummy_spi_send_command,
+	.multicommand	= default_spi_send_multicommand,
+	.read		= default_spi_read,
+	.write_256	= dummy_spi_write_256,
+	.write_aai	= default_spi_write_aai,
+};
+
+static struct par_master par_master_dummy = {
+		.chip_readb		= dummy_chip_readb,
+		.chip_readw		= dummy_chip_readw,
+		.chip_readl		= dummy_chip_readl,
+		.chip_readn		= dummy_chip_readn,
+		.chip_writeb		= dummy_chip_writeb,
+		.chip_writew		= dummy_chip_writew,
+		.chip_writel		= dummy_chip_writel,
+		.chip_writen		= dummy_chip_writen,
+};
+
+static int dummy_shutdown(void *data)
 {
-	return spi_write_chunked(flash, buf, start, len,
-				 spi_write_256_chunksize);
+	msg_pspew("%s\n", __func__);
+#if EMULATE_CHIP
+	struct emu_data *emu_data = (struct emu_data *)data;
+	if (emu_data->emu_chip != EMULATE_NONE) {
+		if (emu_data->emu_persistent_image && emu_data->emu_modified) {
+			msg_pdbg("Writing %s\n", emu_data->emu_persistent_image);
+			write_buf_to_file(flashchip_contents,
+					  emu_data->emu_chip_size,
+					  emu_data->emu_persistent_image);
+			free(emu_data->emu_persistent_image);
+			emu_data->emu_persistent_image = NULL;
+		}
+		free(flashchip_contents);
+	}
+#endif
+	return 0;
+}
+
+int dummy_init(void)
+{
+	char *bustext = NULL;
+	char *tmp = NULL;
+	unsigned int i;
+#if EMULATE_SPI_CHIP
+	char *status = NULL;
+	int size = -1;  /* size for VARIABLE_SIZE chip device */
+#endif
+#if EMULATE_CHIP
+	struct stat image_stat;
+#endif
+
+	struct emu_data *data = calloc(1, sizeof(struct emu_data));
+	if (!data) {
+		msg_perr("Out of memory!\n");
+		return 1;
+	}
+	data->emu_chip = EMULATE_NONE;
+	data->delay_us = 0;
+	spi_master_dummyflasher.data = data;
+	par_master_dummy.data = data;
+
+	msg_pspew("%s\n", __func__);
+
+	bustext = extract_programmer_param("bus");
+	msg_pdbg("Requested buses are: %s\n", bustext ? bustext : "default");
+	if (!bustext)
+		bustext = strdup("parallel+lpc+fwh+spi");
+	/* Convert the parameters to lowercase. */
+	tolower_string(bustext);
+
+	dummy_buses_supported = BUS_NONE;
+	if (strstr(bustext, "parallel")) {
+		dummy_buses_supported |= BUS_PARALLEL;
+		msg_pdbg("Enabling support for %s flash.\n", "parallel");
+	}
+	if (strstr(bustext, "lpc")) {
+		dummy_buses_supported |= BUS_LPC;
+		msg_pdbg("Enabling support for %s flash.\n", "LPC");
+	}
+	if (strstr(bustext, "fwh")) {
+		dummy_buses_supported |= BUS_FWH;
+		msg_pdbg("Enabling support for %s flash.\n", "FWH");
+	}
+	if (strstr(bustext, "spi")) {
+		dummy_buses_supported |= BUS_SPI;
+		msg_pdbg("Enabling support for %s flash.\n", "SPI");
+	}
+	if (dummy_buses_supported == BUS_NONE)
+		msg_pdbg("Support for all flash bus types disabled.\n");
+	free(bustext);
+
+	tmp = extract_programmer_param("spi_write_256_chunksize");
+	if (tmp) {
+		spi_write_256_chunksize = atoi(tmp);
+		free(tmp);
+		if (spi_write_256_chunksize < 1) {
+			msg_perr("invalid spi_write_256_chunksize\n");
+			return 1;
+		}
+	}
+
+	tmp = extract_programmer_param("spi_blacklist");
+	if (tmp) {
+		i = strlen(tmp);
+		if (!strncmp(tmp, "0x", 2)) {
+			i -= 2;
+			memmove(tmp, tmp + 2, i + 1);
+		}
+		if ((i > 512) || (i % 2)) {
+			msg_perr("Invalid SPI command blacklist length\n");
+			free(tmp);
+			return 1;
+		}
+		data->spi_blacklist_size = i / 2;
+		for (i = 0; i < data->spi_blacklist_size * 2; i++) {
+			if (!isxdigit((unsigned char)tmp[i])) {
+				msg_perr("Invalid char \"%c\" in SPI command "
+					 "blacklist\n", tmp[i]);
+				free(tmp);
+				return 1;
+			}
+		}
+		for (i = 0; i < data->spi_blacklist_size; i++) {
+			unsigned int tmp2;
+			/* SCNx8 is apparently not supported by MSVC (and thus
+			 * MinGW), so work around it with an extra variable
+			 */
+			sscanf(tmp + i * 2, "%2x", &tmp2);
+			data->spi_blacklist[i] = (uint8_t)tmp2;
+		}
+		msg_pdbg("SPI blacklist is ");
+		for (i = 0; i < data->spi_blacklist_size; i++)
+			msg_pdbg("%02x ", data->spi_blacklist[i]);
+		msg_pdbg(", size %u\n", data->spi_blacklist_size);
+	}
+	free(tmp);
+
+	tmp = extract_programmer_param("spi_ignorelist");
+	if (tmp) {
+		i = strlen(tmp);
+		if (!strncmp(tmp, "0x", 2)) {
+			i -= 2;
+			memmove(tmp, tmp + 2, i + 1);
+		}
+		if ((i > 512) || (i % 2)) {
+			msg_perr("Invalid SPI command ignorelist length\n");
+			free(tmp);
+			return 1;
+		}
+		data->spi_ignorelist_size = i / 2;
+		for (i = 0; i < data->spi_ignorelist_size * 2; i++) {
+			if (!isxdigit((unsigned char)tmp[i])) {
+				msg_perr("Invalid char \"%c\" in SPI command "
+					 "ignorelist\n", tmp[i]);
+				free(tmp);
+				return 1;
+			}
+		}
+		for (i = 0; i < data->spi_ignorelist_size; i++) {
+			unsigned int tmp2;
+			/* SCNx8 is apparently not supported by MSVC (and thus
+			 * MinGW), so work around it with an extra variable
+			 */
+			sscanf(tmp + i * 2, "%2x", &tmp2);
+			data->spi_ignorelist[i] = (uint8_t)tmp2;
+		}
+		msg_pdbg("SPI ignorelist is ");
+		for (i = 0; i < data->spi_ignorelist_size; i++)
+			msg_pdbg("%02x ", data->spi_ignorelist[i]);
+		msg_pdbg(", size %u\n", data->spi_ignorelist_size);
+	}
+	free(tmp);
+
+	/* frequency to emulate in Hz (default), KHz, or MHz */
+	tmp = extract_programmer_param("freq");
+	if (tmp) {
+		unsigned long int freq;
+		char *units = tmp;
+		char *end = tmp + strlen(tmp);
+
+		errno = 0;
+		freq = strtoul(tmp, &units, 0);
+		if (errno) {
+			msg_perr("Invalid frequency \"%s\", %s\n",
+					tmp, strerror(errno));
+			free(tmp);
+			return 1;
+		}
+
+		if ((units > tmp) && (units < end)) {
+			int units_valid = 0;
+
+			if (units < end - 3) {
+				;
+			} else if (units == end - 2) {
+				if (!strcasecmp(units, "hz"))
+					units_valid = 1;
+			} else if (units == end - 3) {
+				if (!strcasecmp(units, "khz")) {
+					freq *= 1000;
+					units_valid = 1;
+				} else if (!strcasecmp(units, "mhz")) {
+					freq *= 1000000;
+					units_valid = 1;
+				}
+			}
+
+			if (!units_valid) {
+				msg_perr("Invalid units: %s\n", units);
+				free(tmp);
+				return 1;
+			}
+		}
+
+		/* Assume we only work with bytes and transfer at 1 bit/Hz */
+		data->delay_us = (1000000 * 8) / freq;
+	}
+	free(tmp);
+
+#if EMULATE_CHIP
+#if EMULATE_SPI_CHIP
+	tmp = extract_programmer_param("size");
+	if (tmp) {
+		size = strtol(tmp, NULL, 10);
+		if (size <= 0 || (size % 1024 != 0)) {
+			msg_perr("%s: Chip size is not a multipler of 1024: %s\n",
+					 __func__, tmp);
+			free(tmp);
+			return 1;
+		}
+		free(tmp);
+	}
+#endif
+
+	tmp = extract_programmer_param("emulate");
+	if (!tmp) {
+		msg_pdbg("Not emulating any flash chip.\n");
+		/* Nothing else to do. */
+		goto dummy_init_out;
+	}
+#if EMULATE_SPI_CHIP
+	if (!strcmp(tmp, "M25P10.RES")) {
+		data->emu_chip = EMULATE_ST_M25P10_RES;
+		data->emu_chip_size = 128 * 1024;
+		data->emu_max_byteprogram_size = 128;
+		data->emu_max_aai_size = 0;
+		data->emu_jedec_se_size = 0;
+		data->emu_jedec_be_52_size = 0;
+		data->emu_jedec_be_d8_size = 32 * 1024;
+		data->emu_jedec_ce_60_size = 0;
+		data->emu_jedec_ce_c7_size = data->emu_chip_size;
+		msg_pdbg("Emulating ST M25P10.RES SPI flash chip (RES, page "
+			 "write)\n");
+	}
+	if (!strcmp(tmp, "SST25VF040.REMS")) {
+		data->emu_chip = EMULATE_SST_SST25VF040_REMS;
+		data->emu_chip_size = 512 * 1024;
+		data->emu_max_byteprogram_size = 1;
+		data->emu_max_aai_size = 0;
+		data->emu_jedec_se_size = 4 * 1024;
+		data->emu_jedec_be_52_size = 32 * 1024;
+		data->emu_jedec_be_d8_size = 0;
+		data->emu_jedec_ce_60_size = data->emu_chip_size;
+		data->emu_jedec_ce_c7_size = 0;
+		msg_pdbg("Emulating SST SST25VF040.REMS SPI flash chip (REMS, "
+			 "byte write)\n");
+	}
+	if (!strcmp(tmp, "SST25VF032B")) {
+		data->emu_chip = EMULATE_SST_SST25VF032B;
+		data->emu_chip_size = 4 * 1024 * 1024;
+		data->emu_max_byteprogram_size = 1;
+		data->emu_max_aai_size = 2;
+		data->emu_jedec_se_size = 4 * 1024;
+		data->emu_jedec_be_52_size = 32 * 1024;
+		data->emu_jedec_be_d8_size = 64 * 1024;
+		data->emu_jedec_ce_60_size = data->emu_chip_size;
+		data->emu_jedec_ce_c7_size = data->emu_chip_size;
+		msg_pdbg("Emulating SST SST25VF032B SPI flash chip (RDID, AAI "
+			 "write)\n");
+	}
+	if (!strcmp(tmp, "MX25L6436")) {
+		data->emu_chip = EMULATE_MACRONIX_MX25L6436;
+		data->emu_chip_size = 8 * 1024 * 1024;
+		data->emu_max_byteprogram_size = 256;
+		data->emu_max_aai_size = 0;
+		data->emu_jedec_se_size = 4 * 1024;
+		data->emu_jedec_be_52_size = 32 * 1024;
+		data->emu_jedec_be_d8_size = 64 * 1024;
+		data->emu_jedec_ce_60_size = data->emu_chip_size;
+		data->emu_jedec_ce_c7_size = data->emu_chip_size;
+		msg_pdbg("Emulating Macronix MX25L6436 SPI flash chip (RDID, "
+			 "SFDP)\n");
+	}
+	if (!strcmp(tmp, "W25Q128FV")) {
+		data->emu_chip = EMULATE_WINBOND_W25Q128FV;
+		data->emu_chip_size = 16 * 1024 * 1024;
+		data->emu_max_byteprogram_size = 256;
+		data->emu_max_aai_size = 0;
+		data->emu_jedec_se_size = 4 * 1024;
+		data->emu_jedec_be_52_size = 32 * 1024;
+		data->emu_jedec_be_d8_size = 64 * 1024;
+		data->emu_jedec_ce_60_size = data->emu_chip_size;
+		data->emu_jedec_ce_c7_size = data->emu_chip_size;
+		msg_pdbg("Emulating Winbond W25Q128FV SPI flash chip (RDID)\n");
+	}
+
+	/* The name of variable-size virtual chip. A 4 MiB flash example:
+	 *   flashrom -p dummy:emulate=VARIABLE_SIZE,size=4194304
+	 */
+	if (!strcmp(tmp, "VARIABLE_SIZE")) {
+		if (size == -1) {
+			msg_perr("%s: the size parameter is not given.\n", __func__);
+			free(tmp);
+			return 1;
+		}
+		data->emu_chip = EMULATE_VARIABLE_SIZE;
+		data->emu_chip_size = size;
+		data->emu_max_byteprogram_size = 256;
+		data->emu_max_aai_size = 0;
+		data->emu_jedec_se_size = 4 * 1024;
+		data->emu_jedec_be_52_size = 32 * 1024;
+		data->emu_jedec_be_d8_size = 64 * 1024;
+		data->emu_jedec_ce_60_size = data->emu_chip_size;
+		data->emu_jedec_ce_c7_size = data->emu_chip_size;
+		msg_pdbg("Emulating generic SPI flash chip (size=%d bytes)\n",
+		         data->emu_chip_size);
+	}
+#endif
+	if (data->emu_chip == EMULATE_NONE) {
+		msg_perr("Invalid chip specified for emulation: %s\n", tmp);
+		free(tmp);
+		return 1;
+	}
+	free(tmp);
+
+	/* Should emulated flash erase to zero (yes/no)? */
+	tmp = extract_programmer_param("erase_to_zero");
+	if (tmp) {
+		if (!strcmp(tmp, "yes")) {
+			msg_pdbg("Emulated chip will erase to 0x00\n");
+			data->erase_to_zero = 1;
+		} else if (!strcmp(tmp, "no")) {
+			msg_pdbg("Emulated chip will erase to 0xff\n");
+		} else {
+			msg_perr("erase_to_zero can be \"yes\" or \"no\"\n");
+			free(tmp);
+			return 1;
+		}
+	}
+	free(tmp);
+
+	flashchip_contents = malloc(data->emu_chip_size);
+	if (!flashchip_contents) {
+		msg_perr("Out of memory!\n");
+		return 1;
+	}
+
+#ifdef EMULATE_SPI_CHIP
+	status = extract_programmer_param("spi_status");
+	if (status) {
+		char *endptr;
+		errno = 0;
+		data->emu_status = strtoul(status, &endptr, 0);
+		free(status);
+		if (errno != 0 || status == endptr) {
+			msg_perr("Error: initial status register specified, "
+				 "but the value could not be converted.\n");
+			return 1;
+		}
+		msg_pdbg("Initial status register is set to 0x%02x.\n",
+			 data->emu_status);
+	}
+#endif
+
+	msg_pdbg("Filling fake flash chip with 0x%02x, size %i\n",
+			data->erase_to_zero ? 0x00 : 0xff, data->emu_chip_size);
+	memset(flashchip_contents, data->erase_to_zero ? 0x00 : 0xff, data->emu_chip_size);
+
+	/* Will be freed by shutdown function if necessary. */
+	data->emu_persistent_image = extract_programmer_param("image");
+	if (!data->emu_persistent_image) {
+		/* Nothing else to do. */
+		goto dummy_init_out;
+	}
+	/* We will silently (in default verbosity) ignore the file if it does not exist (yet) or the size does
+	 * not match the emulated chip. */
+	if (!stat(data->emu_persistent_image, &image_stat)) {
+		msg_pdbg("Found persistent image %s, %jd B ",
+			 data->emu_persistent_image, (intmax_t)image_stat.st_size);
+		if ((uintmax_t)image_stat.st_size == data->emu_chip_size) {
+			msg_pdbg("matches.\n");
+			msg_pdbg("Reading %s\n", data->emu_persistent_image);
+			if (read_buf_from_file(flashchip_contents, data->emu_chip_size,
+					   data->emu_persistent_image)) {
+				msg_perr("Unable to read %s\n", data->emu_persistent_image);
+				free(flashchip_contents);
+				return 1;
+			}
+		} else {
+			msg_pdbg("doesn't match.\n");
+		}
+	}
+#endif
+
+dummy_init_out:
+	if (register_shutdown(dummy_shutdown, data)) {
+		free(flashchip_contents);
+		free(data);
+		return 1;
+	}
+	if (dummy_buses_supported & (BUS_PARALLEL | BUS_LPC | BUS_FWH))
+		register_par_master(&par_master_dummy,
+				    dummy_buses_supported & (BUS_PARALLEL | BUS_LPC | BUS_FWH));
+	if (dummy_buses_supported & BUS_SPI)
+		register_spi_master(&spi_master_dummyflasher);
+
+	return 0;
 }
 
 #if EMULATE_CHIP && EMULATE_SPI_CHIP