Make flash protection work, when the environment is in EEPROM

On the pcm030 the environment is located in the onboard EEPROM. But we want
to handle flash sector protection in a safe manner. So we must read the
unlock environment variable from EEPROM instead from flash.

This patch is required as long the evironment is saved into the EEPROM.

Stefan: Additional change as suggested by Wolfgang, use bigger char array
(instead of 4).

Signed-off-by: Eric Schumann <E.Schumann@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Wolfgang Denk <wd@denx.de>
Signed-off-by: Stefan Roese <sr@denx.de>

diff --git a/drivers/mtd/cfi_flash.c b/drivers/mtd/cfi_flash.c
index 391d169a481c63f72d96528dbdf4115d0d5d9570..631b969bbc1114189f5a7477666c6d7409156519 100644 (file)
--- a/drivers/mtd/cfi_flash.c
+++ b/drivers/mtd/cfi_flash.c
@@ -2009,7 +2009,9 @@ unsigned long flash_init (void)
 #endif
 
 #ifdef CONFIG_SYS_FLASH_PROTECTION
-       char *s = getenv("unlock");
+       /* read environment from EEPROM */
+       char s[64];
+       getenv_r ("unlock", s, sizeof(s));
 #endif
 
 #define BANK_BASE(i)   (((phys_addr_t [CFI_MAX_FLASH_BANKS])CONFIG_SYS_FLASH_BANKS_LIST)[i])