Refactor unlocking of many chips with locking at register space address +2.

This includes PMC Pm49*, SST 49LF00*, ST M50* and Winbond W39* families.
The erase and write test status bits of all affected chips have been reset.

Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Signed-off-by: Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at>
Acked-by: Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at>

git-svn-id: https://code.coreboot.org/svn/flashrom/trunk@1833 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

1 files changed, 0 insertions, 55 deletions

diff --git a/stm50.c b/stm50.c
index edcfdd2..1ae2bc4 100644
--- a/stm50.c
+++ b/stm50.c
@@ -27,63 +27,8 @@
  */
 
 #include "flash.h"
-#include "flashchips.h"
 #include "chipdrivers.h"
 
-static int stm50_unlock_address(struct flashctx *flash, int offset)
-{
-	chipaddr wrprotect = flash->virtual_registers + 2;
-	static const uint8_t unlock_sector = 0x00;
-	msg_cdbg("unlocking at 0x%x\n", offset);
-	chip_writeb(flash, unlock_sector, wrprotect + offset);
-	if (chip_readb(flash, wrprotect + offset) != unlock_sector) {
-		msg_cerr("Cannot unlock address 0x%x\n", offset);
-		return -1;
-	}
-	return 0;
-}
-
-/* Chips known to use a non-uniform block and sector layout for locking (as well as for erasing):
- * Name		Size	Address range of lock registers
- * M50FLW080A	1MB 	FFB00002 - FFBFF002
- * M50FLW080B	1MB	FFB00002 - FFBFF002
- * M50FW002	256k	FFBC0002 - FFBFC002
- * M50LPW116	2MB	FFA00002 - FFBFC002
- */
-int unlock_stm50_nonuniform(struct flashctx *flash)
-{
-	int i;
-	struct eraseblock *eraseblocks = flash->chip->block_erasers[0].eraseblocks;
-	unsigned int done = 0;
-	for (i = 0; i < NUM_ERASEREGIONS && eraseblocks[i].count != 0; i++) {
-		unsigned int block_size = eraseblocks[i].size;
-		unsigned int block_count = eraseblocks[i].count;
-
-		int j;
-		for (j = 0; j < block_count; j++) {
-			if (stm50_unlock_address(flash, done)) {
-				msg_cerr("UNLOCK FAILED!\n");
-				return -1;
-			}
-			done += block_count * block_size;
-		}
-	}
-	return 0;
-}
-
-/* Unlocking for uniform 64 kB blocks starting at offset 2 of the feature registers. */
-int unlock_stm50_uniform(struct flashctx *flash)
-{
-	int i;
-	for (i = 0; i < flash->chip->total_size * 1024; i+= 64 * 1024) {
-		if (stm50_unlock_address(flash, i)) {
-			msg_cerr("UNLOCK FAILED!\n");
-			return -1;
-		}
-	}
-	return 0;
-}
-
 static int stm50_erase_sector(struct flashctx *flash, unsigned int addr)
 {
 	chipaddr bios = flash->virtual_memory + addr;