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-rw-r--r--CHANGELOG27
-rw-r--r--common/cmd_flash.c5
-rw-r--r--drivers/cfi_flash.c71
-rw-r--r--include/configs/p3p440.h4
-rw-r--r--include/flash.h1
5 files changed, 95 insertions, 13 deletions
diff --git a/CHANGELOG b/CHANGELOG
index 34b8d20eb..4c5b62c06 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -2,6 +2,33 @@
Changes since U-Boot 1.1.4:
======================================================================
+* Changes/fixes for drivers/cfi_flash.c:
+
+ - Add Intel legacy lock/unlock support to common CFI driver
+
+ On some Intel flash's (e.g. Intel J3) legacy unlocking is
+ supported, meaning that unlocking of one sector will unlock
+ all sectors of this bank. Using this feature, unlocking
+ of all sectors upon startup (via env var "unlock=yes") will
+ get much faster.
+
+ - Fixed problem with multiple reads of envronment variable
+ "unlock" as pointed out by Reinhard Arlt & Anders Larsen.
+
+ - Removed unwanted linefeeds from "protect" command when
+ CFG_FLASH_PROTECTION is enabled.
+
+ - Changed p3p400 board to use CFG_FLASH_PROTECTION
+
+ Patch by Stefan Roese, 01 Apr 2006
+
+* Changes/fixes for drivers/cfi_flash.c:
+ - Correctly handle the cases where CFG_HZ != 1000 (several
+ XScale-based boards)
+ - Fix the timeout calculation of buffered writes (off by a
+ factor of 1000)
+ Patch by Anders Larsen, 31 Mar 2006
+
* Enable Quad UART om MCC200 board.
* Cleanup MCC200 board configuration; omit non-existent stuff.
diff --git a/common/cmd_flash.c b/common/cmd_flash.c
index 0aa478306..201f4e33d 100644
--- a/common/cmd_flash.c
+++ b/common/cmd_flash.c
@@ -455,6 +455,7 @@ int do_protect (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
#ifdef CONFIG_HAS_DATAFLASH
int status;
#endif
+
if (argc < 3) {
printf ("Usage:\n%s\n", cmdtp->usage);
return 1;
@@ -655,10 +656,10 @@ int flash_sect_protect (int p, ulong addr_first, ulong addr_last)
#endif /* CFG_FLASH_PROTECTION */
}
}
+ }
#if defined(CFG_FLASH_PROTECTION)
- if (!rcode) putc ('\n');
+ puts (" done\n");
#endif /* CFG_FLASH_PROTECTION */
- }
printf ("%sProtected %d sectors\n",
p ? "" : "Un-", protected);
diff --git a/drivers/cfi_flash.c b/drivers/cfi_flash.c
index a989d3466..2e3748081 100644
--- a/drivers/cfi_flash.c
+++ b/drivers/cfi_flash.c
@@ -117,6 +117,7 @@
#define FLASH_OFFSET_CFI 0x55
#define FLASH_OFFSET_CFI_RESP 0x10
#define FLASH_OFFSET_PRIMARY_VENDOR 0x13
+#define FLASH_OFFSET_EXT_QUERY_T_P_ADDR 0x15 /* extended query table primary addr */
#define FLASH_OFFSET_WTOUT 0x1F
#define FLASH_OFFSET_WBTOUT 0x20
#define FLASH_OFFSET_ETOUT 0x21
@@ -346,6 +347,10 @@ unsigned long flash_init (void)
unsigned long size = 0;
int i;
+#ifdef CFG_FLASH_PROTECTION
+ char *s = getenv("unlock");
+#endif
+
/* Init: no FLASHes known */
for (i = 0; i < CFG_MAX_FLASH_BANKS; ++i) {
flash_info[i].flash_id = FLASH_UNKNOWN;
@@ -357,15 +362,39 @@ unsigned long flash_init (void)
#endif /* CFG_FLASH_QUIET_TEST */
}
#ifdef CFG_FLASH_PROTECTION
- else {
- char *s = getenv("unlock");
+ else if ((s != NULL) && (strcmp(s, "yes") == 0)) {
+ /*
+ * Only the U-Boot image and it's environment is protected,
+ * all other sectors are unprotected (unlocked) if flash
+ * hardware protection is used (CFG_FLASH_PROTECTION) and
+ * the environment variable "unlock" is set to "yes".
+ */
+ if (flash_info[i].legacy_unlock) {
+ int k;
+
+ /*
+ * Disable legacy_unlock temporarily, since
+ * flash_real_protect would relock all other sectors
+ * again otherwise.
+ */
+ flash_info[i].legacy_unlock = 0;
- if (((s = getenv("unlock")) != NULL) && (strcmp(s, "yes") == 0)) {
/*
- * Only the U-Boot image and it's environment is protected,
- * all other sectors are unprotected (unlocked) if flash
- * hardware protection is used (CFG_FLASH_PROTECTION) and
- * the environment variable "unlock" is set to "yes".
+ * Legacy unlocking (e.g. Intel J3) -> unlock only one
+ * sector. This will unlock all sectors.
+ */
+ flash_real_protect (&flash_info[i], 0, 0);
+
+ flash_info[i].legacy_unlock = 1;
+
+ /*
+ * Manually mark other sectors as unlocked (unprotected)
+ */
+ for (k = 1; k < flash_info[i].sector_count; k++)
+ flash_info[i].protect[k] = 0;
+ } else {
+ /*
+ * No legancy unlocking -> unlock all sectors
*/
flash_protect (FLAG_PROTECT_CLEAR,
flash_info[i].start[0],
@@ -668,8 +697,12 @@ int flash_real_protect (flash_info_t * info, long sector, int prot)
prot ? "protect" : "unprotect")) == 0) {
info->protect[sector] = prot;
- /* Intel's unprotect unprotects all locking */
- if (prot == 0) {
+
+ /*
+ * On some of Intel's flash chips (marked via legacy_unlock)
+ * unprotect unprotects all locking.
+ */
+ if ((prot == 0) && (info->legacy_unlock)) {
flash_sect_t i;
for (i = 0; i < info->sector_count; i++) {
@@ -746,6 +779,10 @@ static int flash_status_check (flash_info_t * info, flash_sect_t sector,
{
ulong start;
+#if CFG_HZ != 1000
+ tout *= CFG_HZ/1000;
+#endif
+
/* Wait for command completion */
start = get_timer (0);
while (flash_is_busy (info, sector)) {
@@ -1082,6 +1119,10 @@ ulong flash_get_size (ulong base, int banknum)
uchar num_erase_regions;
int erase_region_size;
int erase_region_count;
+#ifdef CFG_FLASH_PROTECTION
+ int ext_addr;
+ info->legacy_unlock = 0;
+#endif
info->start[0] = base;
@@ -1095,6 +1136,13 @@ ulong flash_get_size (ulong base, int banknum)
case CFI_CMDSET_INTEL_EXTENDED:
default:
info->cmd_reset = FLASH_CMD_RESET;
+#ifdef CFG_FLASH_PROTECTION
+ /* read legacy lock/unlock bit from intel flash */
+ ext_addr = flash_read_ushort (info, 0,
+ FLASH_OFFSET_EXT_QUERY_T_P_ADDR);
+ info->legacy_unlock =
+ flash_read_uchar (info, ext_addr + 5) & 0x08;
+#endif
break;
case CFI_CMDSET_AMD_STANDARD:
case CFI_CMDSET_AMD_EXTENDED:
@@ -1160,8 +1208,9 @@ ulong flash_get_size (ulong base, int banknum)
info->buffer_size = (1 << flash_read_ushort (info, 0, FLASH_OFFSET_BUFFER_SIZE));
tmp = 1 << flash_read_uchar (info, FLASH_OFFSET_ETOUT);
info->erase_blk_tout = (tmp * (1 << flash_read_uchar (info, FLASH_OFFSET_EMAX_TOUT)));
- tmp = 1 << flash_read_uchar (info, FLASH_OFFSET_WBTOUT);
- info->buffer_write_tout = (tmp * (1 << flash_read_uchar (info, FLASH_OFFSET_WBMAX_TOUT)));
+ tmp = (1 << flash_read_uchar (info, FLASH_OFFSET_WBTOUT)) *
+ (1 << flash_read_uchar (info, FLASH_OFFSET_WBMAX_TOUT));
+ info->buffer_write_tout = tmp / 1000 + (tmp % 1000 ? 1 : 0); /* round up when converting to ms */
tmp = (1 << flash_read_uchar (info, FLASH_OFFSET_WTOUT)) *
(1 << flash_read_uchar (info, FLASH_OFFSET_WMAX_TOUT));
info->write_tout = tmp / 1000 + (tmp % 1000 ? 1 : 0); /* round up when converting to ms */
diff --git a/include/configs/p3p440.h b/include/configs/p3p440.h
index 831d018e2..19656fc22 100644
--- a/include/configs/p3p440.h
+++ b/include/configs/p3p440.h
@@ -146,6 +146,7 @@
"cp.b 100000 fffc0000 40000;" \
"setenv filesize;saveenv\0" \
"upd=run load;run update\0" \
+ "unlock=yes\0" \
""
#define CONFIG_BOOTCOMMAND "run net_nfs"
@@ -275,6 +276,9 @@
#define CFG_FLASH_ERASE_TOUT 120000 /* Timeout for Flash Erase (in ms) */
#define CFG_FLASH_WRITE_TOUT 500 /* Timeout for Flash Write (in ms) */
+#define CFG_FLASH_PROTECTION 1 /* use hardware protection */
+#define CFG_FLASH_USE_BUFFER_WRITE 1 /* use buffered writes (20x faster) */
+
#define CFG_FLASH_EMPTY_INFO /* print 'E' for empty sector on flinfo */
#define CFG_FLASH_QUIET_TEST 1 /* don't warn upon unknown flash */
diff --git a/include/flash.h b/include/flash.h
index 4c68c6832..a84dc6872 100644
--- a/include/flash.h
+++ b/include/flash.h
@@ -45,6 +45,7 @@ typedef struct {
ushort vendor; /* the primary vendor id */
ushort cmd_reset; /* Vendor specific reset command */
ushort interface; /* used for x8/x16 adjustments */
+ ushort legacy_unlock; /* support Intel legacy (un)locking */
#endif
} flash_info_t;
generated by cgit v1.2.3-70-g09d2 (git 2.51.2) at 2025-10-31 22:06:31 +0000