flash: constify driver data structures

Change-Id: Ia5c3de48119f036e1d7a41be62a672a6fb37e59b
Signed-off-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-on: http://openocd.zylin.com/2293
Tested-by: jenkins

src/flash/nor/fm3.c

@@ -240,7 +240,7 @@ static int fm3_erase(struct flash_bank *bank, int first, int last)
 	/* R0 keeps Flash Sequence address 1     (u32FlashSeq1)    */
 	/* R1 keeps Flash Sequence address 2     (u32FlashSeq2)    */
 	/* R2 keeps Flash Offset address         (ofs)			   */
-	const uint8_t fm3_flash_erase_sector_code[] = {
+	static const uint8_t fm3_flash_erase_sector_code[] = {
 						/*    *(uint16_t*)u32FlashSeq1 = 0xAA; */
 		0xAA, 0x24,		/*        MOVS  R4, #0xAA              */
 		0x04, 0x80,		/*        STRH  R4, [R0, #0]           */
@@ -849,7 +849,7 @@ static int fm3_chip_erase(struct flash_bank *bank)
 	/* RAMCODE used for fm3 Flash chip erase:				   */
 	/* R0 keeps Flash Sequence address 1     (u32FlashSeq1)    */
 	/* R1 keeps Flash Sequence address 2     (u32FlashSeq2)    */
-	const uint8_t fm3_flash_erase_chip_code[] = {
+	static const uint8_t fm3_flash_erase_chip_code[] = {
 						/*    *(uint16_t*)u32FlashSeq1 = 0xAA; */
 		0xAA, 0x22,		/*        MOVS  R2, #0xAA              */
 		0x02, 0x80,		/*        STRH  R2, [R0, #0]           */

src/flash/nor/non_cfi.c

@@ -33,7 +33,7 @@
 #define ERASE_REGION(num, size) (((size/256) << 16) | (num-1))
 
 /* non-CFI compatible flashes */
-static struct non_cfi non_cfi_flashes[] = {
+static const struct non_cfi non_cfi_flashes[] = {
 	{
 		.mfr = CFI_MFR_SST,
 		.id = 0xd4,
@@ -472,7 +472,7 @@ void cfi_fixup_non_cfi(struct flash_bank *bank)
 {
 	unsigned int mask;
 	struct cfi_flash_bank *cfi_info = bank->driver_priv;
-	struct non_cfi *non_cfi = non_cfi_flashes;
+	const struct non_cfi *non_cfi = non_cfi_flashes;
 
 	if (cfi_info->x16_as_x8)
 		mask = 0xFF;

src/flash/nor/nrf51.c

@@ -920,8 +920,9 @@ static int nrf51_info(struct flash_bank *bank, char *buf, int buf_size)
 	if (res != ERROR_OK)
 		return res;
 
-	struct {
-		uint32_t address, value;
+	static struct {
+		const uint32_t address;
+		uint32_t value;
 	} ficr[] = {
 		{ .address = NRF51_FICR_CODEPAGESIZE	},
 		{ .address = NRF51_FICR_CODESIZE	},