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

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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.

Corresponding to flashrom svn r1833.

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>
This commit is contained in:
Carl-Daniel Hailfinger
2014-08-03 13:05:34 +00:00
committed by Stefan Tauner
parent 2a41f0a2c0
commit ef3ac8ac17
9 changed files with 248 additions and 315 deletions
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112
w39.c
View File

@ -20,65 +20,7 @@
*/
#include "flash.h"
static int printlock_w39_fwh_block(struct flashctx *flash, unsigned int offset)
{
chipaddr wrprotect = flash->virtual_registers + offset + 2;
uint8_t locking;
locking = chip_readb(flash, wrprotect);
msg_cdbg("Lock status of block at 0x%08x is ", offset);
switch (locking & 0x7) {
case 0:
msg_cdbg("Full Access.\n");
break;
case 1:
msg_cdbg("Write Lock (Default State).\n");
break;
case 2:
msg_cdbg("Locked Open (Full Access, Lock Down).\n");
break;
case 3:
msg_cerr("Error: Write Lock, Locked Down.\n");
break;
case 4:
msg_cdbg("Read Lock.\n");
break;
case 5:
msg_cdbg("Read/Write Lock.\n");
break;
case 6:
msg_cerr("Error: Read Lock, Locked Down.\n");
break;
case 7:
msg_cerr("Error: Read/Write Lock, Locked Down.\n");
break;
}
/* Read or write lock present? */
return (locking & ((1 << 2) | (1 << 0))) ? -1 : 0;
}
static int unlock_w39_fwh_block(struct flashctx *flash, unsigned int offset)
{
chipaddr wrprotect = flash->virtual_registers + offset + 2;
uint8_t locking;
locking = chip_readb(flash, wrprotect);
/* Read or write lock present? */
if (locking & ((1 << 2) | (1 << 0))) {
/* Lockdown active? */
if (locking & (1 << 1)) {
msg_cerr("Can't unlock block at 0x%08x!\n", offset);
return -1;
} else {
msg_cdbg("Unlocking block at 0x%08x\n", offset);
chip_writeb(flash, 0, wrprotect);
}
}
return 0;
}
#include "chipdrivers.h"
static uint8_t w39_idmode_readb(struct flashctx *flash, unsigned int offset)
{
@ -145,30 +87,6 @@ static int printlock_w39_common(struct flashctx *flash, unsigned int offset)
return printlock_w39_tblwp(lock);
}
static int printlock_w39_fwh(struct flashctx *flash)
{
unsigned int i, total_size = flash->chip->total_size * 1024;
int ret = 0;
/* Print lock status of the complete chip */
for (i = 0; i < total_size; i += flash->chip->page_size)
ret |= printlock_w39_fwh_block(flash, i);
return ret;
}
static int unlock_w39_fwh(struct flashctx *flash)
{
unsigned int i, total_size = flash->chip->total_size * 1024;
/* Unlock the complete chip */
for (i = 0; i < total_size; i += flash->chip->page_size)
if (unlock_w39_fwh_block(flash, i))
return -1;
return 0;
}
int printlock_w39f010(struct flashctx *flash)
{
uint8_t lock;
@ -267,7 +185,7 @@ int printlock_w39v040fa(struct flashctx *flash)
int ret = 0;
ret = printlock_w39v040a(flash);
ret |= printlock_w39_fwh(flash);
ret |= printlock_regspace2_uniform_64k(flash);
return ret;
}
@ -277,7 +195,7 @@ int printlock_w39v040fb(struct flashctx *flash)
int ret = 0;
ret = printlock_w39v040b(flash);
ret |= printlock_w39_fwh(flash);
ret |= printlock_regspace2_uniform_64k(flash);
return ret;
}
@ -288,7 +206,7 @@ int printlock_w39v040fc(struct flashctx *flash)
/* W39V040C and W39V040FC use different WP/TBL offsets. */
ret = printlock_w39_common(flash, 0x7fff2);
ret |= printlock_w39_fwh(flash);
ret |= printlock_regspace2_uniform_64k(flash);
return ret;
}
@ -303,7 +221,7 @@ int printlock_w39v080fa(struct flashctx *flash)
int ret = 0;
ret = printlock_w39v080a(flash);
ret |= printlock_w39_fwh(flash);
ret |= printlock_regspace2_uniform_64k(flash);
return ret;
}
@ -316,26 +234,6 @@ int printlock_w39v080fa_dual(struct flashctx *flash)
return -1;
}
int unlock_w39v040fb(struct flashctx *flash)
{
if (unlock_w39_fwh(flash))
return -1;
if (printlock_w39_common(flash, 0x7fff2))
return -1;
return 0;
}
int unlock_w39v080fa(struct flashctx *flash)
{
if (unlock_w39_fwh(flash))
return -1;
if (printlock_w39_common(flash, 0xffff2))
return -1;
return 0;
}
int printlock_at49f(struct flashctx *flash)
{
uint8_t lock = w39_idmode_readb(flash, 0x00002);