diff --git a/82802ab.c b/82802ab.c
index 148042c77..95ff19972 100644
--- a/82802ab.c
+++ b/82802ab.c
@@ -24,6 +24,7 @@
 
 #include <stdbool.h>
 #include "flash.h"
+#include "parallel.h"
 #include "chipdrivers.h"
 
 void print_status_82802ab(uint8_t status)
diff --git a/en29lv640b.c b/en29lv640b.c
index b6473929d..10f5f7469 100644
--- a/en29lv640b.c
+++ b/en29lv640b.c
@@ -16,6 +16,7 @@
  */
 
 #include "flash.h"
+#include "parallel.h"
 #include "chipdrivers.h"
 
 /*
diff --git a/flashrom.c b/flashrom.c
index ce844e12c..c5a2d6941 100644
--- a/flashrom.c
+++ b/flashrom.c
@@ -30,6 +30,7 @@
 #include <ctype.h>
 
 #include "flash.h"
+#include "parallel.h"
 #include "flashchips.h"
 #include "programmer.h"
 #include "hwaccess_physmap.h"
diff --git a/include/flash.h b/include/flash.h
index 59f9a8ae5..c3321fcee 100644
--- a/include/flash.h
+++ b/include/flash.h
@@ -645,16 +645,6 @@ struct flashrom_flashctx {
 extern const struct flashchip flashchips[];
 extern const unsigned int flashchips_size;
 
-/* parallel.c */
-void chip_writeb(const struct flashctx *flash, uint8_t val, chipaddr addr);
-void chip_writew(const struct flashctx *flash, uint16_t val, chipaddr addr);
-void chip_writel(const struct flashctx *flash, uint32_t val, chipaddr addr);
-void chip_writen(const struct flashctx *flash, const uint8_t *buf, chipaddr addr, size_t len);
-uint8_t chip_readb(const struct flashctx *flash, const chipaddr addr);
-uint16_t chip_readw(const struct flashctx *flash, const chipaddr addr);
-uint32_t chip_readl(const struct flashctx *flash, const chipaddr addr);
-void chip_readn(const struct flashctx *flash, uint8_t *buf, const chipaddr addr, size_t len);
-
 /* print.c */
 int print_supported(void);
 
diff --git a/include/parallel.h b/include/parallel.h
new file mode 100644
index 000000000..72d6baac6
--- /dev/null
+++ b/include/parallel.h
@@ -0,0 +1,21 @@
+/*
+ * This file is part of the flashrom project.
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#ifndef __PARALLEL_H__
+#define __PARALLEL_H__ 1
+
+#include "flash.h"
+
+void chip_writeb(const struct flashctx *flash, uint8_t val, chipaddr addr);
+void chip_writew(const struct flashctx *flash, uint16_t val, chipaddr addr);
+void chip_writel(const struct flashctx *flash, uint32_t val, chipaddr addr);
+void chip_writen(const struct flashctx *flash, const uint8_t *buf, chipaddr addr, size_t len);
+uint8_t chip_readb(const struct flashctx *flash, const chipaddr addr);
+uint16_t chip_readw(const struct flashctx *flash, const chipaddr addr);
+uint32_t chip_readl(const struct flashctx *flash, const chipaddr addr);
+void chip_readn(const struct flashctx *flash, uint8_t *buf, const chipaddr addr, size_t len);
+
+#endif /* !__PARALLEL_H__ */
\ No newline at end of file
diff --git a/jedec.c b/jedec.c
index df0d93ace..1cf025e7a 100644
--- a/jedec.c
+++ b/jedec.c
@@ -20,6 +20,7 @@
  */
 
 #include "flash.h"
+#include "parallel.h"
 #include "chipdrivers.h"
 
 #define MAX_REFLASH_TRIES 0x10
diff --git a/parallel.c b/parallel.c
index b19372302..3976c954e 100644
--- a/parallel.c
+++ b/parallel.c
@@ -19,7 +19,7 @@
  * GNU General Public License for more details.
  */
 
-#include "flash.h"
+#include "parallel.h"
 #include "programmer.h"
 
 void chip_writeb(const struct flashctx *flash, uint8_t val, chipaddr addr)
diff --git a/printlock.c b/printlock.c
index f6eea7f46..1872d234f 100644
--- a/printlock.c
+++ b/printlock.c
@@ -20,6 +20,7 @@
  */
 
 #include "flash.h"
+#include "parallel.h"
 #include "chipdrivers.h"
 
 
diff --git a/sst28sf040.c b/sst28sf040.c
index e6a4b3675..b2cb5feb5 100644
--- a/sst28sf040.c
+++ b/sst28sf040.c
@@ -17,6 +17,7 @@
  */
 
 #include "flash.h"
+#include "parallel.h"
 #include "chipdrivers.h"
 
 #define AUTO_PG_ERASE1		0x20
diff --git a/sst49lfxxxc.c b/sst49lfxxxc.c
index a69ab7539..c7b1512c9 100644
--- a/sst49lfxxxc.c
+++ b/sst49lfxxxc.c
@@ -17,6 +17,7 @@
  */
 
 #include "flash.h"
+#include "parallel.h"
 #include "chipdrivers.h"
 
 int erase_sector_49lfxxxc(struct flashctx *flash, unsigned int address,
diff --git a/sst_fwhub.c b/sst_fwhub.c
index d688a350d..56e79555e 100644
--- a/sst_fwhub.c
+++ b/sst_fwhub.c
@@ -19,6 +19,7 @@
 /* Adapted from the Intel FW hub stuff for 82802ax parts. */
 
 #include "flash.h"
+#include "parallel.h"
 #include "chipdrivers.h"
 
 static int check_sst_fwhub_block_lock(struct flashctx *flash, unsigned int offset)
diff --git a/stm50.c b/stm50.c
index d495e0954..25c3c2cb0 100644
--- a/stm50.c
+++ b/stm50.c
@@ -23,6 +23,7 @@
  */
 
 #include "flash.h"
+#include "parallel.h"
 #include "chipdrivers.h"
 
 static int stm50_erase_sector(struct flashctx *flash, unsigned int addr)
diff --git a/w29ee011.c b/w29ee011.c
index 234b865c8..23330247c 100644
--- a/w29ee011.c
+++ b/w29ee011.c
@@ -18,6 +18,7 @@
 #include <stdbool.h>
 
 #include "flash.h"
+#include "parallel.h"
 #include "chipdrivers.h"
 
 bool w29ee011_can_override(const char *const chip_name, const char *const override_chip)
diff --git a/w39.c b/w39.c
index 114d0b563..250d6bd63 100644
--- a/w39.c
+++ b/w39.c
@@ -16,6 +16,7 @@
  */
 
 #include "flash.h"
+#include "parallel.h"
 #include "chipdrivers.h"
 
 static uint8_t w39_idmode_readb(struct flashctx *flash, unsigned int offset)