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authorwdenk <wdenk>2004-03-14 00:59:59 +0000
committerwdenk <wdenk>2004-03-14 00:59:59 +0000
commitc3f9d4939af90eb8e30119601c86c05bde6c7345 (patch)
tree90854c0902fd963de17ee275e3836629892a060f /common/env_flash.c
parent0e6d798cb313580acd06ba01626687a557c5159f (diff)
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* Patch by Yuli Barcohen, 4 Mar 2004:
Fix problems with GCC 3.3.x which changed handling of global variables explicitly initialized to zero (now in .bss instead of .data as before). * Patch by Leon Kukovec, 02 Mar 2004: add strswab() to fix IDE LBA capacity, firmware and model numbers on little endian machines * Patch by Masami Komiya, 02 Mar 2004: - Remove get_ticks() from NFS code - Add verification of RPC transaction ID * Patch by Pierre Aubert, 02 Mar 2004: cleanup for IDE and USB drivers for MPC5200
Diffstat (limited to 'common/env_flash.c')
-rw-r--r--common/env_flash.c66
1 files changed, 25 insertions, 41 deletions
diff --git a/common/env_flash.c b/common/env_flash.c
index 079f84d..4e42c8f 100644
--- a/common/env_flash.c
+++ b/common/env_flash.c
@@ -79,9 +79,9 @@ static env_t *flash_addr_new = (env_t *)CFG_ENV_ADDR_REDUND;
static ulong end_addr = CFG_ENV_ADDR + CFG_ENV_SECT_SIZE - 1;
static ulong end_addr_new = CFG_ENV_ADDR_REDUND + CFG_ENV_SECT_SIZE - 1;
-static uchar active_flag = 1;
-static uchar obsolete_flag = 0;
-#endif
+#define ACTIVE_FLAG 1
+#define OBSOLETE_FLAG 0
+#endif /* CFG_ENV_ADDR_REDUND */
extern uchar default_environment[];
extern int default_environment_size;
@@ -112,43 +112,28 @@ int env_init(void)
ulong addr1 = (ulong)&(flash_addr->data);
ulong addr2 = (ulong)&(flash_addr_new->data);
- if (crc1_ok && ! crc2_ok)
- {
+ if (crc1_ok && ! crc2_ok) {
gd->env_addr = addr1;
gd->env_valid = 1;
- }
- else if (! crc1_ok && crc2_ok)
- {
+ } else if (! crc1_ok && crc2_ok) {
gd->env_addr = addr2;
gd->env_valid = 1;
- }
- else if (! crc1_ok && ! crc2_ok)
- {
+ } else if (! crc1_ok && ! crc2_ok) {
gd->env_addr = addr_default;
gd->env_valid = 0;
- }
- else if (flag1 == active_flag && flag2 == obsolete_flag)
- {
+ } else if (flag1 == ACTIVE_FLAG && flag2 == OBSOLETE_FLAG) {
gd->env_addr = addr1;
gd->env_valid = 1;
- }
- else if (flag1 == obsolete_flag && flag2 == active_flag)
- {
+ } else if (flag1 == OBSOLETE_FLAG && flag2 == ACTIVE_FLAG) {
gd->env_addr = addr2;
gd->env_valid = 1;
- }
- else if (flag1 == flag2)
- {
+ } else if (flag1 == flag2) {
gd->env_addr = addr1;
gd->env_valid = 2;
- }
- else if (flag1 == 0xFF)
- {
+ } else if (flag1 == 0xFF) {
gd->env_addr = addr1;
gd->env_valid = 2;
- }
- else if (flag2 == 0xFF)
- {
+ } else if (flag2 == 0xFF) {
gd->env_addr = addr2;
gd->env_valid = 2;
}
@@ -161,6 +146,7 @@ int saveenv(void)
{
char *saved_data = NULL;
int rc = 1;
+ char flag = OBSOLETE_FLAG, new_flag = ACTIVE_FLAG;
#if CFG_ENV_SECT_SIZE > CFG_ENV_SIZE
ulong up_data = 0;
#endif
@@ -210,16 +196,13 @@ int saveenv(void)
if ((rc = flash_write(env_ptr->data,
(ulong)&(flash_addr_new->data),
sizeof(env_ptr->data))) ||
-
(rc = flash_write((char *)&(env_ptr->crc),
(ulong)&(flash_addr_new->crc),
sizeof(env_ptr->crc))) ||
-
- (rc = flash_write((char *)&obsolete_flag,
+ (rc = flash_write(&flag,
(ulong)&(flash_addr->flags),
sizeof(flash_addr->flags))) ||
-
- (rc = flash_write((char *)&active_flag,
+ (rc = flash_write(&new_flag,
(ulong)&(flash_addr_new->flags),
sizeof(flash_addr_new->flags))))
{
@@ -361,8 +344,7 @@ void env_relocate_spec (void)
#ifdef CFG_ENV_ADDR_REDUND
DECLARE_GLOBAL_DATA_PTR;
- if (gd->env_addr != (ulong)&(flash_addr->data))
- {
+ if (gd->env_addr != (ulong)&(flash_addr->data)) {
env_t * etmp = flash_addr;
ulong ltmp = end_addr;
@@ -373,24 +355,26 @@ void env_relocate_spec (void)
end_addr_new = ltmp;
}
- if (flash_addr_new->flags != obsolete_flag &&
+ if (flash_addr_new->flags != OBSOLETE_FLAG &&
crc32(0, flash_addr_new->data, ENV_SIZE) ==
- flash_addr_new->crc)
- {
+ flash_addr_new->crc) {
+ char flag = OBSOLETE_FLAG;
+
gd->env_valid = 2;
flash_sect_protect (0, (ulong)flash_addr_new, end_addr_new);
- flash_write((char *)&obsolete_flag,
+ flash_write(&flag,
(ulong)&(flash_addr_new->flags),
sizeof(flash_addr_new->flags));
flash_sect_protect (1, (ulong)flash_addr_new, end_addr_new);
}
- if (flash_addr->flags != active_flag &&
- (flash_addr->flags & active_flag) == active_flag)
- {
+ if (flash_addr->flags != ACTIVE_FLAG &&
+ (flash_addr->flags & ACTIVE_FLAG) == ACTIVE_FLAG) {
+ char flag = ACTIVE_FLAG;
+
gd->env_valid = 2;
flash_sect_protect (0, (ulong)flash_addr, end_addr);
- flash_write((char *)&active_flag,
+ flash_write(&flag,
(ulong)&(flash_addr->flags),
sizeof(flash_addr->flags));
flash_sect_protect (1, (ulong)flash_addr, end_addr);