diff --git a/82802ab.c b/82802ab.c
index 0d071d4..b2e8a49 100644
--- a/82802ab.c
+++ b/82802ab.c
@@ -45,7 +45,7 @@
 
 int probe_82802ab(struct flashchip *flash)
 {
-	volatile uint8_t *bios = flash->virtual_memory;
+	chipaddr bios = flash->virtual_memory;
 	uint8_t id1, id2;
 
 #if 0
@@ -79,7 +79,7 @@
 	return 1;
 }
 
-uint8_t wait_82802ab(volatile uint8_t *bios)
+uint8_t wait_82802ab(chipaddr bios)
 {
 	uint8_t status;
 	uint8_t id1, id2;
@@ -109,8 +109,8 @@
 
 int erase_82802ab_block(struct flashchip *flash, int offset)
 {
-	volatile uint8_t *bios = flash->virtual_memory + offset;
-	volatile uint8_t *wrprotect = flash->virtual_registers + offset + 2;
+	chipaddr bios = flash->virtual_memory + offset;
+	chipaddr wrprotect = flash->virtual_registers + offset + 2;
 	int j;
 	uint8_t status;
 
@@ -155,8 +155,8 @@
 	return 0;
 }
 
-void write_page_82802ab(volatile uint8_t *bios, uint8_t *src,
-			volatile uint8_t *dst, int page_size)
+void write_page_82802ab(chipaddr bios, uint8_t *src,
+			chipaddr dst, int page_size)
 {
 	int i;
 
@@ -173,7 +173,7 @@
 	int i;
 	int total_size = flash->total_size * 1024;
 	int page_size = flash->page_size;
-	volatile uint8_t *bios = flash->virtual_memory;
+	chipaddr bios = flash->virtual_memory;
 
 	printf("Programming page: \n");
 	for (i = 0; i < total_size / page_size; i++) {
diff --git a/am29f040b.c b/am29f040b.c
index 87e9c70..2e70fa5 100644
--- a/am29f040b.c
+++ b/am29f040b.c
@@ -22,7 +22,7 @@
 #include <stdint.h>
 #include "flash.h"
 
-static __inline__ int erase_sector_29f040b(volatile uint8_t *bios,
+static __inline__ int erase_sector_29f040b(chipaddr bios,
 					   unsigned long address)
 {
 	chip_writeb(0xAA, bios + 0x555);
@@ -40,17 +40,16 @@
 	return 0;
 }
 
-static __inline__ int write_sector_29f040b(volatile uint8_t *bios,
+static __inline__ int write_sector_29f040b(chipaddr bios,
 					   uint8_t *src,
-					   volatile uint8_t *dst,
+					   chipaddr dst,
 					   unsigned int page_size)
 {
 	int i;
 
 	for (i = 0; i < page_size; i++) {
 		if ((i & 0xfff) == 0xfff)
-			printf("0x%08lx", (unsigned long)dst -
-			       (unsigned long)bios);
+			printf("0x%08lx", dst - bios);
 
 		chip_writeb(0xAA, bios + 0x555);
 		chip_writeb(0x55, bios + 0x2AA);
@@ -69,7 +68,7 @@
 
 int probe_29f040b(struct flashchip *flash)
 {
-	volatile uint8_t *bios = flash->virtual_memory;
+	chipaddr bios = flash->virtual_memory;
 	uint8_t id1, id2;
 
 	chip_writeb(0xAA, bios + 0x555);
@@ -92,7 +91,7 @@
 
 int erase_29f040b(struct flashchip *flash)
 {
-	volatile uint8_t *bios = flash->virtual_memory;
+	chipaddr bios = flash->virtual_memory;
 
 	chip_writeb(0xAA, bios + 0x555);
 	chip_writeb(0x55, bios + 0x2AA);
@@ -112,7 +111,7 @@
 	int i;
 	int total_size = flash->total_size * 1024;
 	int page_size = flash->page_size;
-	volatile uint8_t *bios = flash->virtual_memory;
+	chipaddr bios = flash->virtual_memory;
 
 	printf("Programming page ");
 	for (i = 0; i < total_size / page_size; i++) {
diff --git a/dummyflasher.c b/dummyflasher.c
index 7e671b8..bbe19bf 100644
--- a/dummyflasher.c
+++ b/dummyflasher.c
@@ -54,36 +54,36 @@
 		__func__, (unsigned long)len, virt_addr);
 }
 
-void dummy_chip_writeb(uint8_t val, volatile void *addr)
+void dummy_chip_writeb(uint8_t val, chipaddr addr)
 {
-	printf_debug("%s: addr=%p, val=0x%02x\n", __func__, addr, val);
+	printf_debug("%s: addr=0x%lx, val=0x%02x\n", __func__, addr, val);
 }
 
-void dummy_chip_writew(uint16_t val, volatile void *addr)
+void dummy_chip_writew(uint16_t val, chipaddr addr)
 {
-	printf_debug("%s: addr=%p, val=0x%04x\n", __func__, addr, val);
+	printf_debug("%s: addr=0x%lx, val=0x%04x\n", __func__, addr, val);
 }
 
-void dummy_chip_writel(uint32_t val, volatile void *addr)
+void dummy_chip_writel(uint32_t val, chipaddr addr)
 {
-	printf_debug("%s: addr=%p, val=0x%08x\n", __func__, addr, val);
+	printf_debug("%s: addr=0x%lx, val=0x%08x\n", __func__, addr, val);
 }
 
-uint8_t dummy_chip_readb(const volatile void *addr)
+uint8_t dummy_chip_readb(const chipaddr addr)
 {
-	printf_debug("%s:  addr=%p, returning 0xff\n", __func__, addr);
+	printf_debug("%s:  addr=0x%lx, returning 0xff\n", __func__, addr);
 	return 0xff;
 }
 
-uint16_t dummy_chip_readw(const volatile void *addr)
+uint16_t dummy_chip_readw(const chipaddr addr)
 {
-	printf_debug("%s:  addr=%p, returning 0xffff\n", __func__, addr);
+	printf_debug("%s:  addr=0x%lx, returning 0xffff\n", __func__, addr);
 	return 0xffff;
 }
 
-uint32_t dummy_chip_readl(const volatile void *addr)
+uint32_t dummy_chip_readl(const chipaddr addr)
 {
-	printf_debug("%s:  addr=%p, returning 0xffffffff\n", __func__, addr);
+	printf_debug("%s:  addr=0x%lx, returning 0xffffffff\n", __func__, addr);
 	return 0xffffffff;
 }
 
diff --git a/en29f002a.c b/en29f002a.c
index 7a8c7f7..461ffeb 100644
--- a/en29f002a.c
+++ b/en29f002a.c
@@ -32,7 +32,7 @@
 
 int probe_en29f512(struct flashchip *flash)
 {
-	volatile uint8_t *bios = flash->virtual_memory;
+	chipaddr bios = flash->virtual_memory;
 	uint8_t id1, id2;
 
 	chip_writeb(0xAA, bios + 0x555);
@@ -65,7 +65,7 @@
 /* This does not seem to function properly for EN29F002NT. */
 int probe_en29f002a(struct flashchip *flash)
 {
-	volatile uint8_t *bios = flash->virtual_memory;
+	chipaddr bios = flash->virtual_memory;
 	uint8_t id1, id2;
 
 	chip_writeb(0xAA, bios + 0x555);
@@ -95,10 +95,10 @@
 {
 	int i;
 	int total_size = flash->total_size * 1024;
-	volatile uint8_t *bios = flash->virtual_memory;
-	volatile uint8_t *dst = bios;
+	chipaddr bios = flash->virtual_memory;
+	chipaddr dst = bios;
 
-	// *bios = 0xF0;
+	//chip_writeb(0xF0, bios);
 	myusec_delay(10);
 	erase_chip_jedec(flash);
 
diff --git a/flash.h b/flash.h
index a51458e..b980cba 100644
--- a/flash.h
+++ b/flash.h
@@ -77,6 +77,8 @@
 #endif
 #endif
 
+typedef unsigned long chipaddr;
+
 extern int programmer;
 #define PROGRAMMER_INTERNAL	0x00
 #define PROGRAMMER_DUMMY	0x01
@@ -92,12 +94,12 @@
 	void * (*map_flash_region) (const char *descr, unsigned long phys_addr, size_t len);
 	void (*unmap_flash_region) (void *virt_addr, size_t len);
 
-	void (*chip_writeb) (uint8_t val, volatile void *addr);
-	void (*chip_writew) (uint16_t val, volatile void *addr);
-	void (*chip_writel) (uint32_t val, volatile void *addr);
-	uint8_t (*chip_readb) (const volatile void *addr);
-	uint16_t (*chip_readw) (const volatile void *addr);
-	uint32_t (*chip_readl) (const volatile void *addr);
+	void (*chip_writeb) (uint8_t val, chipaddr addr);
+	void (*chip_writew) (uint16_t val, chipaddr addr);
+	void (*chip_writel) (uint32_t val, chipaddr addr);
+	uint8_t (*chip_readb) (const chipaddr addr);
+	uint16_t (*chip_readw) (const chipaddr addr);
+	uint32_t (*chip_readl) (const chipaddr addr);
 };
 
 extern const struct programmer_entry programmer_table[];
@@ -122,32 +124,32 @@
 	programmer_table[programmer].unmap_flash_region(virt_addr, len);
 }
 
-static inline void chip_writeb(uint8_t val, volatile void *addr)
+static inline void chip_writeb(uint8_t val, chipaddr addr)
 {
 	programmer_table[programmer].chip_writeb(val, addr);
 }
 
-static inline void chip_writew(uint16_t val, volatile void *addr)
+static inline void chip_writew(uint16_t val, chipaddr addr)
 {
 	programmer_table[programmer].chip_writew(val, addr);
 }
 
-static inline void chip_writel(uint32_t val, volatile void *addr)
+static inline void chip_writel(uint32_t val, chipaddr addr)
 {
 	programmer_table[programmer].chip_writel(val, addr);
 }
 
-static inline uint8_t chip_readb(const volatile void *addr)
+static inline uint8_t chip_readb(const chipaddr addr)
 {
 	return programmer_table[programmer].chip_readb(addr);
 }
 
-static inline uint16_t chip_readw(const volatile void *addr)
+static inline uint16_t chip_readw(const chipaddr addr)
 {
 	return programmer_table[programmer].chip_readw(addr);
 }
 
-static inline uint32_t chip_readl(const volatile void *addr)
+static inline uint32_t chip_readl(const chipaddr addr)
 {
 	return programmer_table[programmer].chip_readl(addr);
 }
@@ -180,8 +182,8 @@
 	int (*read) (struct flashchip *flash, uint8_t *buf);
 
 	/* Some flash devices have an additional register space. */
-	volatile uint8_t *virtual_memory;
-	volatile uint8_t *virtual_registers;
+	chipaddr virtual_memory;
+	chipaddr virtual_registers;
 };
 
 #define TEST_UNTESTED	0
@@ -605,16 +607,16 @@
 void get_io_perms(void);
 int internal_init(void);
 int internal_shutdown(void);
-void internal_chip_writeb(uint8_t val, volatile void *addr);
-void internal_chip_writew(uint16_t val, volatile void *addr);
-void internal_chip_writel(uint32_t val, volatile void *addr);
-uint8_t internal_chip_readb(const volatile void *addr);
-uint16_t internal_chip_readw(const volatile void *addr);
-uint32_t internal_chip_readl(const volatile void *addr);
-void fallback_chip_writew(uint16_t val, volatile void *addr);
-void fallback_chip_writel(uint32_t val, volatile void *addr);
-uint16_t fallback_chip_readw(const volatile void *addr);
-uint32_t fallback_chip_readl(const volatile void *addr);
+void internal_chip_writeb(uint8_t val, chipaddr addr);
+void internal_chip_writew(uint16_t val, chipaddr addr);
+void internal_chip_writel(uint32_t val, chipaddr addr);
+uint8_t internal_chip_readb(const chipaddr addr);
+uint16_t internal_chip_readw(const chipaddr addr);
+uint32_t internal_chip_readl(const chipaddr addr);
+void fallback_chip_writew(uint16_t val, chipaddr addr);
+void fallback_chip_writel(uint32_t val, chipaddr addr);
+uint16_t fallback_chip_readw(const chipaddr addr);
+uint32_t fallback_chip_readl(const chipaddr addr);
 #if defined(__FreeBSD__) || defined(__DragonFly__)
 extern int io_fd;
 #endif
@@ -624,12 +626,12 @@
 int dummy_shutdown(void);
 void *dummy_map(const char *descr, unsigned long phys_addr, size_t len);
 void dummy_unmap(void *virt_addr, size_t len);
-void dummy_chip_writeb(uint8_t val, volatile void *addr);
-void dummy_chip_writew(uint16_t val, volatile void *addr);
-void dummy_chip_writel(uint32_t val, volatile void *addr);
-uint8_t dummy_chip_readb(const volatile void *addr);
-uint16_t dummy_chip_readw(const volatile void *addr);
-uint32_t dummy_chip_readl(const volatile void *addr);
+void dummy_chip_writeb(uint8_t val, chipaddr addr);
+void dummy_chip_writew(uint16_t val, chipaddr addr);
+void dummy_chip_writel(uint32_t val, chipaddr addr);
+uint8_t dummy_chip_readb(const chipaddr addr);
+uint16_t dummy_chip_readw(const chipaddr addr);
+uint32_t dummy_chip_readl(const chipaddr addr);
 int dummy_spi_command(unsigned int writecnt, unsigned int readcnt,
 		      const unsigned char *writearr, unsigned char *readarr);
 
@@ -638,8 +640,8 @@
 int nic3com_shutdown(void);
 void *nic3com_map(const char *descr, unsigned long phys_addr, size_t len);
 void nic3com_unmap(void *virt_addr, size_t len);
-void nic3com_chip_writeb(uint8_t val, volatile void *addr);
-uint8_t nic3com_chip_readb(const volatile void *addr);
+void nic3com_chip_writeb(uint8_t val, chipaddr addr);
+uint8_t nic3com_chip_readb(const chipaddr addr);
 extern struct pcidev_status nics_3com[];
 
 /* flashrom.c */
@@ -725,19 +727,19 @@
 
 /* jedec.c */
 uint8_t oddparity(uint8_t val);
-void toggle_ready_jedec(volatile uint8_t *dst);
-void data_polling_jedec(volatile uint8_t *dst, uint8_t data);
-void unprotect_jedec(volatile uint8_t *bios);
-void protect_jedec(volatile uint8_t *bios);
-int write_byte_program_jedec(volatile uint8_t *bios, uint8_t *src,
-			     volatile uint8_t *dst);
+void toggle_ready_jedec(chipaddr dst);
+void data_polling_jedec(chipaddr dst, uint8_t data);
+void unprotect_jedec(chipaddr bios);
+void protect_jedec(chipaddr bios);
+int write_byte_program_jedec(chipaddr bios, uint8_t *src,
+			     chipaddr dst);
 int probe_jedec(struct flashchip *flash);
 int erase_chip_jedec(struct flashchip *flash);
 int write_jedec(struct flashchip *flash, uint8_t *buf);
-int erase_sector_jedec(volatile uint8_t *bios, unsigned int page);
-int erase_block_jedec(volatile uint8_t *bios, unsigned int page);
-int write_sector_jedec(volatile uint8_t *bios, uint8_t *src,
-		       volatile uint8_t *dst, unsigned int page_size);
+int erase_sector_jedec(chipaddr bios, unsigned int page);
+int erase_block_jedec(chipaddr bios, unsigned int page);
+int write_sector_jedec(chipaddr bios, uint8_t *src,
+		       chipaddr dst, unsigned int page_size);
 
 /* m29f002.c */
 int erase_m29f002(struct flashchip *flash);
@@ -747,15 +749,15 @@
 /* m29f400bt.c */
 int probe_m29f400bt(struct flashchip *flash);
 int erase_m29f400bt(struct flashchip *flash);
-int block_erase_m29f400bt(volatile uint8_t *bios,
-				 volatile uint8_t *dst);
+int block_erase_m29f400bt(chipaddr bios,
+				 chipaddr dst);
 int write_m29f400bt(struct flashchip *flash, uint8_t *buf);
 int write_coreboot_m29f400bt(struct flashchip *flash, uint8_t *buf);
-void toggle_ready_m29f400bt(volatile uint8_t *dst);
-void data_polling_m29f400bt(volatile uint8_t *dst, uint8_t data);
-void protect_m29f400bt(volatile uint8_t *bios);
-void write_page_m29f400bt(volatile uint8_t *bios, uint8_t *src,
-			  volatile uint8_t *dst, int page_size);
+void toggle_ready_m29f400bt(chipaddr dst);
+void data_polling_m29f400bt(chipaddr dst, uint8_t data);
+void protect_m29f400bt(chipaddr bios);
+void write_page_m29f400bt(chipaddr bios, uint8_t *src,
+			  chipaddr dst, int page_size);
 
 /* mx29f002.c */
 int probe_29f002(struct flashchip *flash);
@@ -771,9 +773,9 @@
 int probe_lhf00l04(struct flashchip *flash);
 int erase_lhf00l04(struct flashchip *flash);
 int write_lhf00l04(struct flashchip *flash, uint8_t *buf);
-void toggle_ready_lhf00l04(volatile uint8_t *dst);
-void data_polling_lhf00l04(volatile uint8_t *dst, uint8_t data);
-void protect_lhf00l04(volatile uint8_t *bios);
+void toggle_ready_lhf00l04(chipaddr dst);
+void data_polling_lhf00l04(chipaddr dst, uint8_t data);
+void protect_lhf00l04(chipaddr bios);
 
 /* sst28sf040.c */
 int probe_28sf040(struct flashchip *flash);
diff --git a/flashrom.c b/flashrom.c
index 5c5967a..1db3b27 100644
--- a/flashrom.c
+++ b/flashrom.c
@@ -83,7 +83,7 @@
 {
 	size_t size = flash->total_size * 1024;
 	/* Flash registers live 4 MByte below the flash. */
-	flash->virtual_registers = programmer_map_flash_region("flash chip registers", (0xFFFFFFFF - 0x400000 - size + 1), size);
+	flash->virtual_registers = (chipaddr)programmer_map_flash_region("flash chip registers", (0xFFFFFFFF - 0x400000 - size + 1), size);
 }
 
 int read_memmapped(struct flashchip *flash, uint8_t *buf)
@@ -116,7 +116,7 @@
 		size = flash->total_size * 1024;
 
 		base = flashbase ? flashbase : (0xffffffff - size + 1);
-		flash->virtual_memory = programmer_map_flash_region("flash chip", base, size);
+		flash->virtual_memory = (chipaddr)programmer_map_flash_region("flash chip", base, size);
 
 		if (force)
 			break;
@@ -129,8 +129,7 @@
 			break;
 
 notfound:
-		/* The intermediate cast to unsigned long works around a gcc warning bug. */
-		programmer_unmap_flash_region((void *)(unsigned long)flash->virtual_memory, size);
+		programmer_unmap_flash_region((void *)flash->virtual_memory, size);
 	}
 
 	if (!flash || !flash->name)
diff --git a/internal.c b/internal.c
index f10d0d5..653783c 100644
--- a/internal.c
+++ b/internal.c
@@ -138,45 +138,45 @@
 	return 0;
 }
 
-void internal_chip_writeb(uint8_t val, volatile void *addr)
+void internal_chip_writeb(uint8_t val, chipaddr addr)
 {
 	*(volatile uint8_t *) addr = val;
 }
 
-void internal_chip_writew(uint16_t val, volatile void *addr)
+void internal_chip_writew(uint16_t val, chipaddr addr)
 {
 	*(volatile uint16_t *) addr = val;
 }
 
-void internal_chip_writel(uint32_t val, volatile void *addr)
+void internal_chip_writel(uint32_t val, chipaddr addr)
 {
 	*(volatile uint32_t *) addr = val;
 }
 
-uint8_t internal_chip_readb(const volatile void *addr)
+uint8_t internal_chip_readb(const chipaddr addr)
 {
 	return *(volatile uint8_t *) addr;
 }
 
-uint16_t internal_chip_readw(const volatile void *addr)
+uint16_t internal_chip_readw(const chipaddr addr)
 {
 	return *(volatile uint16_t *) addr;
 }
 
-uint32_t internal_chip_readl(const volatile void *addr)
+uint32_t internal_chip_readl(const chipaddr addr)
 {
 	return *(volatile uint32_t *) addr;
 }
 
 /* Little-endian fallback for drivers not supporting 16 bit accesses */
-void fallback_chip_writew(uint16_t val, volatile void *addr)
+void fallback_chip_writew(uint16_t val, chipaddr addr)
 {
 	chip_writeb(val & 0xff, addr);
 	chip_writeb((val >> 8) & 0xff, addr + 1);
 }
 
 /* Little-endian fallback for drivers not supporting 16 bit accesses */
-uint16_t fallback_chip_readw(const volatile void *addr)
+uint16_t fallback_chip_readw(const chipaddr addr)
 {
 	uint16_t val;
 	val = chip_readb(addr);
@@ -185,14 +185,14 @@
 }
 
 /* Little-endian fallback for drivers not supporting 32 bit accesses */
-void fallback_chip_writel(uint32_t val, volatile void *addr)
+void fallback_chip_writel(uint32_t val, chipaddr addr)
 {
 	chip_writew(val & 0xffff, addr);
 	chip_writew((val >> 16) & 0xffff, addr + 2);
 }
 
 /* Little-endian fallback for drivers not supporting 32 bit accesses */
-uint32_t fallback_chip_readl(const volatile void *addr)
+uint32_t fallback_chip_readl(const chipaddr addr)
 {
 	uint32_t val;
 	val = chip_readw(addr);
diff --git a/jedec.c b/jedec.c
index b2ab519..ce7679e 100644
--- a/jedec.c
+++ b/jedec.c
@@ -35,7 +35,7 @@
 	return (val ^ (val >> 1)) & 0x1;
 }
 
-void toggle_ready_jedec(volatile uint8_t *dst)
+void toggle_ready_jedec(chipaddr dst)
 {
 	unsigned int i = 0;
 	uint8_t tmp1, tmp2;
@@ -51,7 +51,7 @@
 	}
 }
 
-void data_polling_jedec(volatile uint8_t *dst, uint8_t data)
+void data_polling_jedec(chipaddr dst, uint8_t data)
 {
 	unsigned int i = 0;
 	uint8_t tmp;
@@ -66,7 +66,7 @@
 	}
 }
 
-void unprotect_jedec(volatile uint8_t *bios)
+void unprotect_jedec(chipaddr bios)
 {
 	chip_writeb(0xAA, bios + 0x5555);
 	chip_writeb(0x55, bios + 0x2AAA);
@@ -78,7 +78,7 @@
 	usleep(200);
 }
 
-void protect_jedec(volatile uint8_t *bios)
+void protect_jedec(chipaddr bios)
 {
 	chip_writeb(0xAA, bios + 0x5555);
 	chip_writeb(0x55, bios + 0x2AAA);
@@ -89,7 +89,7 @@
 
 int probe_jedec(struct flashchip *flash)
 {
-	volatile uint8_t *bios = flash->virtual_memory;
+	chipaddr bios = flash->virtual_memory;
 	uint8_t id1, id2;
 	uint32_t largeid1, largeid2;
 	uint32_t flashcontent1, flashcontent2;
@@ -161,7 +161,7 @@
 	return 0;
 }
 
-int erase_sector_jedec(volatile uint8_t *bios, unsigned int page)
+int erase_sector_jedec(chipaddr bios, unsigned int page)
 {
 	/*  Issue the Sector Erase command   */
 	chip_writeb(0xAA, bios + 0x5555);
@@ -184,7 +184,7 @@
 	return 0;
 }
 
-int erase_block_jedec(volatile uint8_t *bios, unsigned int block)
+int erase_block_jedec(chipaddr bios, unsigned int block)
 {
 	/*  Issue the Sector Erase command   */
 	chip_writeb(0xAA, bios + 0x5555);
@@ -209,7 +209,7 @@
 
 int erase_chip_jedec(struct flashchip *flash)
 {
-	volatile uint8_t *bios = flash->virtual_memory;
+	chipaddr bios = flash->virtual_memory;
 
 	/*  Issue the JEDEC Chip Erase command   */
 	chip_writeb(0xAA, bios + 0x5555);
@@ -231,11 +231,11 @@
 	return 0;
 }
 
-int write_page_write_jedec(volatile uint8_t *bios, uint8_t *src,
-			   volatile uint8_t *dst, int page_size)
+int write_page_write_jedec(chipaddr bios, uint8_t *src,
+			   chipaddr dst, int page_size)
 {
 	int i, tried = 0, start_index = 0, ok;
-	volatile uint8_t *d = dst;
+	chipaddr d = dst;
 	uint8_t *s = src;
 
 retry:
@@ -272,14 +272,14 @@
 		goto retry;
 	}
 	if (!ok) {
-		fprintf(stderr, " page %d failed!\n",
-			(unsigned int)(d - bios) / page_size);
+		fprintf(stderr, " page 0x%lx failed!\n",
+			(d - bios) / page_size);
 	}
 	return !ok;
 }
 
-int write_byte_program_jedec(volatile uint8_t *bios, uint8_t *src,
-			     volatile uint8_t *dst)
+int write_byte_program_jedec(chipaddr bios, uint8_t *src,
+			     chipaddr dst)
 {
 	int tried = 0, ok = 1;
 
@@ -308,8 +308,8 @@
 	return !ok;
 }
 
-int write_sector_jedec(volatile uint8_t *bios, uint8_t *src,
-		       volatile uint8_t *dst, unsigned int page_size)
+int write_sector_jedec(chipaddr bios, uint8_t *src,
+		       chipaddr dst, unsigned int page_size)
 {
 	int i;
 
@@ -326,12 +326,12 @@
 	int i;
 	int total_size = flash->total_size * 1024;
 	int page_size = flash->page_size;
-	volatile uint8_t *bios = flash->virtual_memory;
+	chipaddr bios = flash->virtual_memory;
 
 	erase_chip_jedec(flash);
 	// dumb check if erase was successful.
 	for (i = 0; i < total_size; i++) {
-		if (chip_readb(bios + i) != (uint8_t) 0xff) {
+		if (chip_readb(bios + i) != 0xff) {
 			printf("ERASE FAILED @%d, val %02x!\n", i, chip_readb(bios + i));
 			return -1;
 		}
diff --git a/m29f002.c b/m29f002.c
index 040cd2a..78cdc75 100644
--- a/m29f002.c
+++ b/m29f002.c
@@ -22,7 +22,7 @@
 
 int erase_m29f002(struct flashchip *flash)
 {
-	volatile uint8_t *bios = flash->virtual_memory;
+	chipaddr bios = flash->virtual_memory;
 	chip_writeb(0xaa, bios + 0x555);
 	chip_writeb(0x55, bios + 0xaaa);
 	chip_writeb(0x80, bios + 0x555);
@@ -34,8 +34,8 @@
 	return 0;
 }
 
-static void rewrite_block(volatile uint8_t *bios, uint8_t *src,
-			  volatile uint8_t *dst, int size)
+static void rewrite_block(chipaddr bios, uint8_t *src,
+			  chipaddr dst, int size)
 {
 	/* erase */
 	chip_writeb(0xaa, bios + 0x555);
@@ -59,7 +59,7 @@
 	}
 }
 
-static void do_block(volatile uint8_t *bios, uint8_t *src, int i,
+static void do_block(chipaddr bios, uint8_t *src, int i,
 		     unsigned long start, int size)
 {
 	printf("%d at address: 0x%08lx", i, start);
@@ -70,7 +70,7 @@
 int write_m29f002t(struct flashchip *flash, uint8_t *buf)
 {
 	int i, page_size = flash->page_size;
-	volatile uint8_t *bios = flash->virtual_memory;
+	chipaddr bios = flash->virtual_memory;
 
 	/* M29F002(N)T has 7 blocks. From bottom to top their sizes are:
 	 * 64k 64k 64k 32k 8k 8k 16k
@@ -92,7 +92,7 @@
 int write_m29f002b(struct flashchip *flash, uint8_t *buf)
 {
 	int i = 0, page_size = flash->page_size;
-	volatile uint8_t *bios = flash->virtual_memory;
+	chipaddr bios = flash->virtual_memory;
 
 	/* M29F002B has 7 blocks. From bottom to top their sizes are:
 	 * 16k 8k 8k 32k 64k 64k 64k
diff --git a/m29f400bt.c b/m29f400bt.c
index cb55d76..7d63d58 100644
--- a/m29f400bt.c
+++ b/m29f400bt.c
@@ -20,7 +20,7 @@
 
 #include "flash.h"
 
-void protect_m29f400bt(volatile uint8_t *bios)
+void protect_m29f400bt(chipaddr bios)
 {
 	chip_writeb(0xAA, bios + 0xAAA);
 	chip_writeb(0x55, bios + 0x555);
@@ -29,8 +29,8 @@
 	usleep(200);
 }
 
-void write_page_m29f400bt(volatile uint8_t *bios, uint8_t *src,
-			  volatile uint8_t *dst, int page_size)
+void write_page_m29f400bt(chipaddr bios, uint8_t *src,
+			  chipaddr dst, int page_size)
 {
 	int i;
 
@@ -41,12 +41,12 @@
 
 		/* transfer data from source to destination */
 		chip_writeb(*src, dst);
-		//*(volatile char *) (bios) = 0xF0;
+		//chip_writeb(0xF0, bios);
 		//usleep(5);
 		toggle_ready_jedec(dst);
 		printf
-		    ("Value in the flash at address %p = %#x, want %#x\n",
-		     (uint8_t *) (dst - bios), chip_readb(dst), *src);
+		    ("Value in the flash at address 0x%lx = %#x, want %#x\n",
+		     (dst - bios), chip_readb(dst), *src);
 		dst++;
 		src++;
 	}
@@ -54,7 +54,7 @@
 
 int probe_m29f400bt(struct flashchip *flash)
 {
-	volatile uint8_t *bios = flash->virtual_memory;
+	chipaddr bios = flash->virtual_memory;
 	uint8_t id1, id2;
 
 	chip_writeb(0xAA, bios + 0xAAA);
@@ -85,7 +85,7 @@
 
 int erase_m29f400bt(struct flashchip *flash)
 {
-	volatile uint8_t *bios = flash->virtual_memory;
+	chipaddr bios = flash->virtual_memory;
 
 	chip_writeb(0xAA, bios + 0xAAA);
 	chip_writeb(0x55, bios + 0x555);
@@ -101,7 +101,7 @@
 	return 0;
 }
 
-int block_erase_m29f400bt(volatile uint8_t *bios, volatile uint8_t *dst)
+int block_erase_m29f400bt(chipaddr bios, chipaddr dst)
 {
 
 	chip_writeb(0xAA, bios + 0xAAA);
@@ -110,7 +110,7 @@
 
 	chip_writeb(0xAA, bios + 0xAAA);
 	chip_writeb(0x55, bios + 0x555);
-	//*(volatile uint8_t *) (bios + 0xAAA) = 0x10;
+	//chip_writeb(0x10, bios + 0xAAA);
 	chip_writeb(0x30, dst);
 
 	myusec_delay(10);
@@ -124,7 +124,7 @@
 	int i;
 	int total_size = flash->total_size * 1024;
 	int page_size = flash->page_size;
-	volatile uint8_t *bios = flash->virtual_memory;
+	chipaddr bios = flash->virtual_memory;
 
 	//erase_m29f400bt (flash);
 	printf("Programming page:\n ");
@@ -176,7 +176,7 @@
 
 int write_coreboot_m29f400bt(struct flashchip *flash, uint8_t *buf)
 {
-	volatile uint8_t *bios = flash->virtual_memory;
+	chipaddr bios = flash->virtual_memory;
 
 	printf("Programming page:\n ");
 	/*********************************
diff --git a/mx29f002.c b/mx29f002.c
index b85440f..20d8418 100644
--- a/mx29f002.c
+++ b/mx29f002.c
@@ -24,7 +24,7 @@
 
 int probe_29f002(struct flashchip *flash)
 {
-	volatile uint8_t *bios = flash->virtual_memory;
+	chipaddr bios = flash->virtual_memory;
 	uint8_t id1, id2;
 
 	chip_writeb(0xAA, bios + 0x5555);
@@ -47,7 +47,7 @@
 
 int erase_29f002(struct flashchip *flash)
 {
-	volatile uint8_t *bios = flash->virtual_memory;
+	chipaddr bios = flash->virtual_memory;
 
 	chip_writeb(0xF0, bios + 0x555);
 	chip_writeb(0xAA, bios + 0x555);
@@ -80,8 +80,8 @@
 {
 	int i;
 	int total_size = flash->total_size * 1024;
-	volatile uint8_t *bios = flash->virtual_memory;
-	volatile uint8_t *dst = bios;
+	chipaddr bios = flash->virtual_memory;
+	chipaddr dst = bios;
 
 	chip_writeb(0xF0, bios);
 	myusec_delay(10);
diff --git a/nic3com.c b/nic3com.c
index 84e506d..f5d0aa1 100644
--- a/nic3com.c
+++ b/nic3com.c
@@ -87,17 +87,17 @@
 {
 }
 
-void nic3com_chip_writeb(uint8_t val, volatile void *addr)
+void nic3com_chip_writeb(uint8_t val, chipaddr addr)
 {
-	OUTL((uint32_t)(intptr_t)addr, io_base_addr + BIOS_ROM_ADDR);
+	OUTL((uint32_t)addr, io_base_addr + BIOS_ROM_ADDR);
 	OUTB(val, io_base_addr + BIOS_ROM_DATA);
 }
 
-uint8_t nic3com_chip_readb(const volatile void *addr)
+uint8_t nic3com_chip_readb(const chipaddr addr)
 {
 	uint8_t val;
 
-	OUTL((uint32_t)(intptr_t)addr, io_base_addr + BIOS_ROM_ADDR);
+	OUTL((uint32_t)addr, io_base_addr + BIOS_ROM_ADDR);
 	val = INB(io_base_addr + BIOS_ROM_DATA);
 
 	return val;
diff --git a/pm49fl00x.c b/pm49fl00x.c
index 86f3497..5e96ddc 100644
--- a/pm49fl00x.c
+++ b/pm49fl00x.c
@@ -25,7 +25,7 @@
 
 extern int exclude_start_page, exclude_end_page;
 
-void write_lockbits_49fl00x(volatile uint8_t *bios, int size,
+void write_lockbits_49fl00x(chipaddr bios, int size,
 			    unsigned char bits, int block_size)
 {
 	int i, left = size;
@@ -54,7 +54,7 @@
 	int i;
 	int total_size = flash->total_size * 1024;
 	int page_size = flash->page_size;
-	volatile uint8_t *bios = flash->virtual_memory;
+	chipaddr bios = flash->virtual_memory;
 
 	/* unprotected */
 	write_lockbits_49fl00x(flash->virtual_registers,
@@ -89,7 +89,7 @@
 	int i;
 	int total_size = flash->total_size * 1024;
 	int page_size = flash->page_size;
-	volatile uint8_t *bios = flash->virtual_memory;
+	chipaddr bios = flash->virtual_memory;
 
 	/* unprotected */
 	write_lockbits_49fl00x(flash->virtual_registers, total_size, 0,
diff --git a/sharplhf00l04.c b/sharplhf00l04.c
index 52071e6..c59203d 100644
--- a/sharplhf00l04.c
+++ b/sharplhf00l04.c
@@ -36,7 +36,7 @@
 
 int probe_lhf00l04(struct flashchip *flash)
 {
-	volatile uint8_t *bios = flash->virtual_memory;
+	chipaddr bios = flash->virtual_memory;
 	uint8_t id1, id2;
 
 #if 0
@@ -71,7 +71,7 @@
 	return 1;
 }
 
-uint8_t wait_lhf00l04(volatile uint8_t *bios)
+uint8_t wait_lhf00l04(chipaddr bios)
 {
 	uint8_t status;
 	uint8_t id1, id2;
@@ -101,17 +101,17 @@
 
 int erase_lhf00l04_block(struct flashchip *flash, int offset)
 {
-	volatile uint8_t *bios = flash->virtual_memory + offset;
-	volatile uint8_t *wrprotect = flash->virtual_registers + offset + 2;
+	chipaddr bios = flash->virtual_memory + offset;
+	chipaddr wrprotect = flash->virtual_registers + offset + 2;
 	uint8_t status;
 
 	// clear status register
 	chip_writeb(0x50, bios);
-	printf("Erase at %p\n", bios);
+	printf("Erase at 0x%lx\n", bios);
 	status = wait_lhf00l04(flash->virtual_memory);
 	print_lhf00l04_status(status);
 	// clear write protect
-	printf("write protect is at %p\n", (wrprotect));
+	printf("write protect is at 0x%lx\n", (wrprotect));
 	printf("write protect is 0x%x\n", chip_readb(wrprotect));
 	chip_writeb(0, wrprotect);
 	printf("write protect is 0x%x\n", chip_readb(wrprotect));
@@ -142,8 +142,8 @@
 	return 0;
 }
 
-void write_page_lhf00l04(volatile uint8_t *bios, uint8_t *src,
-			 volatile uint8_t *dst, int page_size)
+void write_page_lhf00l04(chipaddr bios, uint8_t *src,
+			 chipaddr dst, int page_size)
 {
 	int i;
 
@@ -160,7 +160,7 @@
 	int i;
 	int total_size = flash->total_size * 1024;
 	int page_size = flash->page_size;
-	volatile uint8_t *bios = flash->virtual_memory;
+	chipaddr bios = flash->virtual_memory;
 
 	erase_lhf00l04(flash);
 	if (chip_readb(bios) != 0xff) {
diff --git a/sst28sf040.c b/sst28sf040.c
index 282b369..afa4191 100644
--- a/sst28sf040.c
+++ b/sst28sf040.c
@@ -30,7 +30,7 @@
 #define RESET			0xFF
 #define READ_ID			0x90
 
-static __inline__ void protect_28sf040(volatile uint8_t *bios)
+static __inline__ void protect_28sf040(chipaddr bios)
 {
 	uint8_t tmp;
 
@@ -43,7 +43,7 @@
 	tmp = chip_readb(bios + 0x040A);
 }
 
-static __inline__ void unprotect_28sf040(volatile uint8_t *bios)
+static __inline__ void unprotect_28sf040(chipaddr bios)
 {
 	uint8_t tmp;
 
@@ -56,7 +56,7 @@
 	tmp = chip_readb(bios + 0x041A);
 }
 
-static __inline__ int erase_sector_28sf040(volatile uint8_t *bios,
+static __inline__ int erase_sector_28sf040(chipaddr bios,
 					   unsigned long address)
 {
 	chip_writeb(AUTO_PG_ERASE1, bios);
@@ -68,9 +68,9 @@
 	return 0;
 }
 
-static __inline__ int write_sector_28sf040(volatile uint8_t *bios,
+static __inline__ int write_sector_28sf040(chipaddr bios,
 					   uint8_t *src,
-					   volatile uint8_t *dst,
+					   chipaddr dst,
 					   unsigned int page_size)
 {
 	int i;
@@ -95,7 +95,7 @@
 
 int probe_28sf040(struct flashchip *flash)
 {
-	volatile uint8_t *bios = flash->virtual_memory;
+	chipaddr bios = flash->virtual_memory;
 	uint8_t id1, id2;
 
 	chip_writeb(RESET, bios);
@@ -119,7 +119,7 @@
 
 int erase_28sf040(struct flashchip *flash)
 {
-	volatile uint8_t *bios = flash->virtual_memory;
+	chipaddr bios = flash->virtual_memory;
 
 	unprotect_28sf040(bios);
 	chip_writeb(CHIP_ERASE, bios);
@@ -137,7 +137,7 @@
 	int i;
 	int total_size = flash->total_size * 1024;
 	int page_size = flash->page_size;
-	volatile uint8_t *bios = flash->virtual_memory;
+	chipaddr bios = flash->virtual_memory;
 
 	unprotect_28sf040(bios);
 
diff --git a/sst49lf040.c b/sst49lf040.c
index 10452bf..a610092 100644
--- a/sst49lf040.c
+++ b/sst49lf040.c
@@ -26,7 +26,7 @@
 	int i;
 	int total_size = flash->total_size * 1024;
 	int page_size = flash->page_size;
-	volatile uint8_t *bios = flash->virtual_memory;
+	chipaddr bios = flash->virtual_memory;
 
 	for (i = 0; i < total_size / page_size; i++) {
 		/* Chip erase only works in parallel programming mode
@@ -42,7 +42,7 @@
 	int i;
 	int total_size = flash->total_size * 1024;
 	int page_size = flash->page_size;
-	volatile uint8_t *bios = flash->virtual_memory;
+	chipaddr bios = flash->virtual_memory;
 
 	printf("Programming page: ");
 	for (i = 0; i < total_size / page_size; i++) {
diff --git a/sst49lfxxxc.c b/sst49lfxxxc.c
index 54897cc..d744cca 100644
--- a/sst49lfxxxc.c
+++ b/sst49lfxxxc.c
@@ -41,7 +41,7 @@
 #define	STATUS_ESS		(1 << 6)
 #define	STATUS_WSMS		(1 << 7)
 
-static __inline__ int write_lockbits_49lfxxxc(volatile uint8_t *bios, int size,
+static __inline__ int write_lockbits_49lfxxxc(chipaddr bios, int size,
 					      unsigned char bits)
 {
 	int i, left = size;
@@ -68,7 +68,7 @@
 	return 0;
 }
 
-static __inline__ int erase_sector_49lfxxxc(volatile uint8_t *bios,
+static __inline__ int erase_sector_49lfxxxc(chipaddr bios,
 					    unsigned long address)
 {
 	unsigned char status;
@@ -79,7 +79,7 @@
 	do {
 		status = chip_readb(bios);
 		if (status & (STATUS_ESS | STATUS_BPS)) {
-			printf("sector erase FAILED at address=0x%08lx status=0x%01x\n", (unsigned long)bios + address, status);
+			printf("sector erase FAILED at address=0x%08lx status=0x%01x\n", bios + address, status);
 			chip_writeb(CLEAR_STATUS, bios);
 			return (-1);
 		}
@@ -88,9 +88,9 @@
 	return 0;
 }
 
-static __inline__ int write_sector_49lfxxxc(volatile uint8_t *bios,
+static __inline__ int write_sector_49lfxxxc(chipaddr bios,
 					    uint8_t *src,
-					    volatile uint8_t *dst,
+					    chipaddr dst,
 					    unsigned int page_size)
 {
 	int i;
@@ -111,7 +111,7 @@
 		do {
 			status = chip_readb(bios);
 			if (status & (STATUS_ESS | STATUS_BPS)) {
-				printf("sector write FAILED at address=0x%08lx status=0x%01x\n", (unsigned long)dst, status);
+				printf("sector write FAILED at address=0x%08lx status=0x%01x\n", dst, status);
 				chip_writeb(CLEAR_STATUS, bios);
 				return (-1);
 			}
@@ -123,7 +123,7 @@
 
 int probe_49lfxxxc(struct flashchip *flash)
 {
-	volatile uint8_t *bios = flash->virtual_memory;
+	chipaddr bios = flash->virtual_memory;
 
 	uint8_t id1, id2;
 
@@ -147,8 +147,8 @@
 
 int erase_49lfxxxc(struct flashchip *flash)
 {
-	volatile uint8_t *bios = flash->virtual_memory;
-	volatile uint8_t *registers = flash->virtual_registers;
+	chipaddr bios = flash->virtual_memory;
+	chipaddr registers = flash->virtual_registers;
 	int i;
 	unsigned int total_size = flash->total_size * 1024;
 
@@ -167,7 +167,7 @@
 	int i;
 	int total_size = flash->total_size * 1024;
 	int page_size = flash->page_size;
-	volatile uint8_t *bios = flash->virtual_memory;
+	chipaddr bios = flash->virtual_memory;
 
 	write_lockbits_49lfxxxc(flash->virtual_registers, total_size, 0);
 	printf("Programming page: ");
diff --git a/sst_fwhub.c b/sst_fwhub.c
index 3b74a95..6abff0c 100644
--- a/sst_fwhub.c
+++ b/sst_fwhub.c
@@ -37,7 +37,7 @@
 
 int check_sst_fwhub_block_lock(struct flashchip *flash, int offset)
 {
-	volatile uint8_t *registers = flash->virtual_registers;
+	chipaddr registers = flash->virtual_registers;
 	uint8_t blockstatus;
 
 	blockstatus = chip_readb(registers + offset + 2);
@@ -63,7 +63,7 @@
 
 int clear_sst_fwhub_block_lock(struct flashchip *flash, int offset)
 {
-	volatile uint8_t *registers = flash->virtual_registers;
+	chipaddr registers = flash->virtual_registers;
 	uint8_t blockstatus;
 
 	blockstatus = check_sst_fwhub_block_lock(flash, offset);
@@ -115,7 +115,7 @@
 {
 	int i;
 	unsigned int total_size = flash->total_size * 1024;
-	volatile uint8_t *bios = flash->virtual_memory;
+	chipaddr bios = flash->virtual_memory;
 
 	for (i = 0; i < total_size; i += flash->page_size)
 		erase_sst_fwhub_block(flash, i);
@@ -136,7 +136,7 @@
 	int i;
 	int total_size = flash->total_size * 1024;
 	int page_size = flash->page_size;
-	volatile uint8_t *bios = flash->virtual_memory;
+	chipaddr bios = flash->virtual_memory;
 	uint8_t blockstatus;
 
 	// FIXME: We want block wide erase instead of ironing the whole chip
diff --git a/stm50flw0x0x.c b/stm50flw0x0x.c
index d2d82d6..0e39bce 100644
--- a/stm50flw0x0x.c
+++ b/stm50flw0x0x.c
@@ -31,7 +31,7 @@
 #include <stdint.h>
 #include "flash.h"
 
-void protect_stm50flw0x0x(volatile uint8_t *bios)
+void protect_stm50flw0x0x(chipaddr bios)
 {
 	chip_writeb(0xAA, bios + 0x5555);
 	chip_writeb(0x55, bios + 0x2AAA);
@@ -42,7 +42,7 @@
 
 int probe_stm50flw0x0x(struct flashchip *flash)
 {
-	volatile uint8_t *bios = flash->virtual_memory;
+	chipaddr bios = flash->virtual_memory;
 	uint8_t id1, id2;
 	uint32_t largeid1, largeid2;
 
@@ -91,7 +91,7 @@
 	return 1;
 }
 
-static void wait_stm50flw0x0x(volatile uint8_t *bios)
+static void wait_stm50flw0x0x(chipaddr bios)
 {
 	uint8_t id1;
 	// id2;
@@ -120,7 +120,7 @@
  */
 int unlock_block_stm50flw0x0x(struct flashchip *flash, int offset)
 {
-	volatile uint8_t *wrprotect = flash->virtual_registers + 2;
+	chipaddr wrprotect = flash->virtual_registers + 2;
 	const uint8_t unlock_sector = 0x00;
 	int j;
 
@@ -163,12 +163,12 @@
 
 int erase_block_stm50flw0x0x(struct flashchip *flash, int offset)
 {
-	volatile uint8_t *bios = flash->virtual_memory + offset;
+	chipaddr bios = flash->virtual_memory + offset;
 	int j;
 
 	// clear status register
 	chip_writeb(0x50, bios);
-	printf_debug("Erase at %p\n", bios);
+	printf_debug("Erase at 0x%lx\n", bios);
 	// now start it
 	chip_writeb(0x20, bios);
 	chip_writeb(0xd0, bios);
@@ -188,11 +188,11 @@
 	return 0;
 }
 
-int write_page_stm50flw0x0x(volatile uint8_t *bios, uint8_t *src,
-			    volatile uint8_t *dst, int page_size)
+int write_page_stm50flw0x0x(chipaddr bios, uint8_t *src,
+			    chipaddr dst, int page_size)
 {
 	int i, rc = 0;
-	volatile uint8_t *d = dst;
+	chipaddr d = dst;
 	uint8_t *s = src;
 
 	/* transfer data from source to destination */
@@ -219,8 +219,8 @@
 	}
 
 	if (rc) {
-		fprintf(stderr, " page %d failed!\n",
-			(unsigned int)(d - bios) / page_size);
+		fprintf(stderr, " page 0x%lx failed!\n",
+			(d - bios) / page_size);
 	}
 
 	return rc;
@@ -234,7 +234,7 @@
 	int i, rc = 0;
 	int total_size = flash->total_size * 1024;
 	int page_size = flash->page_size;
-	volatile uint8_t *bios = flash->virtual_memory;
+	chipaddr bios = flash->virtual_memory;
 
 	printf("Erasing page:\n");
 	for (i = 0; (i < total_size / page_size) && (rc == 0); i++) {
@@ -256,7 +256,7 @@
 	int i, rc = 0;
 	int total_size = flash->total_size * 1024;
 	int page_size = flash->page_size;
-	volatile uint8_t *bios = flash->virtual_memory;
+	chipaddr bios = flash->virtual_memory;
 
 	printf("Programming page: \n");
 	for (i = 0; (i < total_size / page_size) && (rc == 0); i++) {
diff --git a/w29ee011.c b/w29ee011.c
index 37b9082..d630440 100644
--- a/w29ee011.c
+++ b/w29ee011.c
@@ -23,7 +23,7 @@
 
 int probe_w29ee011(struct flashchip *flash)
 {
-	volatile uint8_t *bios = flash->virtual_memory;
+	chipaddr bios = flash->virtual_memory;
 	uint8_t id1, id2;
 	extern char *chip_to_probe;
 
diff --git a/w39v040c.c b/w39v040c.c
index e7a2eb1..f5d7a4e 100644
--- a/w39v040c.c
+++ b/w39v040c.c
@@ -23,7 +23,7 @@
 
 int probe_w39v040c(struct flashchip *flash)
 {
-	volatile uint8_t *bios = flash->virtual_memory;
+	chipaddr bios = flash->virtual_memory;
 	uint8_t id1, id2, lock;
 
 	chip_writeb(0xAA, bios + 0x5555);
@@ -61,7 +61,7 @@
 {
 	int i;
 	unsigned int total_size = flash->total_size * 1024;
-	volatile uint8_t *bios = flash->virtual_memory;
+	chipaddr bios = flash->virtual_memory;
 
 	for (i = 0; i < total_size; i += flash->page_size)
 		erase_sector_jedec(flash->virtual_memory, i);
@@ -80,7 +80,7 @@
 	int i;
 	int total_size = flash->total_size * 1024;
 	int page_size = flash->page_size;
-	volatile uint8_t *bios = flash->virtual_memory;
+	chipaddr bios = flash->virtual_memory;
 
 	if (flash->erase(flash))
 		return -1;
diff --git a/w39v080fa.c b/w39v080fa.c
index 7b827f8..8ebd263 100644
--- a/w39v080fa.c
+++ b/w39v080fa.c
@@ -23,7 +23,7 @@
 
 int probe_winbond_fwhub(struct flashchip *flash)
 {
-	volatile uint8_t *bios = flash->virtual_memory;
+	chipaddr bios = flash->virtual_memory;
 	uint8_t vid, did;
 
 	/* Product Identification Entry */
@@ -54,7 +54,7 @@
 
 static int unlock_block_winbond_fwhub(struct flashchip *flash, int offset)
 {
-	volatile uint8_t *wrprotect = flash->virtual_registers + offset + 2;
+	chipaddr wrprotect = flash->virtual_registers + offset + 2;
 	uint8_t locking;
 
 	printf_debug("Trying to unlock block @0x%08x = 0x%02x\n", offset,
@@ -98,7 +98,7 @@
 int unlock_winbond_fwhub(struct flashchip *flash)
 {
 	int i, total_size = flash->total_size * 1024;
-	volatile uint8_t *bios = flash->virtual_memory;
+	chipaddr bios = flash->virtual_memory;
 	uint8_t locking;
 
 	/* Are there any hardware restrictions that we can't overcome? 
@@ -143,7 +143,7 @@
 	return 0;
 }
 
-static int erase_sector_winbond_fwhub(volatile uint8_t *bios,
+static int erase_sector_winbond_fwhub(chipaddr bios,
 				      unsigned int sector)
 {
 	/* Remember: too much sleep can waste your day. */
@@ -168,7 +168,7 @@
 int erase_winbond_fwhub(struct flashchip *flash)
 {
 	int i, total_size = flash->total_size * 1024;
-	volatile uint8_t *bios = flash->virtual_memory;
+	chipaddr bios = flash->virtual_memory;
 
 	unlock_winbond_fwhub(flash);
 
@@ -193,7 +193,7 @@
 {
 	int i;
 	int total_size = flash->total_size * 1024;
-	volatile uint8_t *bios = flash->virtual_memory;
+	chipaddr bios = flash->virtual_memory;
 
 	if (erase_winbond_fwhub(flash))
 		return -1;
diff --git a/w49f002u.c b/w49f002u.c
index 3144ebd..fcac643 100644
--- a/w49f002u.c
+++ b/w49f002u.c
@@ -26,7 +26,7 @@
 	int i;
 	int total_size = flash->total_size * 1024;
 	int page_size = flash->page_size;
-	volatile uint8_t *bios = flash->virtual_memory;
+	chipaddr bios = flash->virtual_memory;
 
 	erase_chip_jedec(flash);