[U-Boot] [PATCH] NAND: cmd_nand.c: fix invalid pointers to static relocated chip names

[U-Boot] [PATCH] NAND: cmd_nand.c: fix invalid pointers to static relocated chip names

[gvv at horse.lst.loc]

When U-boot starting from NAND the pointers to chip names are set before relocation.
If the original memory block is overwritten after relocation that led to invalid
string data in the nand utility.

Signed-off-by: Valeriy Glushkov <gvv@lstec.com>
---
diff --git a/common/cmd_nand.c b/common/cmd_nand.c
index b94a2bf..14925cd 100644
--- a/common/cmd_nand.c
+++ b/common/cmd_nand.c
@@ -10,6 +10,7 @@
 
 #include <common.h>
 
+DECLARE_GLOBAL_DATA_PTR;
 
 #ifndef CONFIG_NAND_LEGACY
 /*
@@ -193,7 +194,7 @@ int do_nand(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 		for (i = 0; i < CFG_MAX_NAND_DEVICE; i++) {
 			if (nand_info[i].name)
 				printf("Device %d: %s, sector size %u KiB\n",
-				       i, nand_info[i].name,
+				       i, nand_info[i].name + gd->reloc_off,
 				       nand_info[i].erasesize >> 10);
 		}
 		return 0;
@@ -207,7 +208,7 @@ int do_nand(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 				puts("\nno devices available\n");
 			else
 				printf("\nDevice %d: %s\n", nand_curr_device,
-				       nand_info[nand_curr_device].name);
+				       nand_info[nand_curr_device].name + gd->reloc_off);
 			return 0;
 		}
 		dev = (int)simple_strtoul(argv[2], NULL, 10);
@@ -215,7 +216,7 @@ int do_nand(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 			puts("No such device\n");
 			return 1;
 		}
-		printf("Device %d: %s", dev, nand_info[dev].name);
+		printf("Device %d: %s", dev, nand_info[dev].name + gd->reloc_off);
 		puts("... is now current device\n");
 		nand_curr_device = dev;
 
@@ -993,8 +994,8 @@ int do_nandboot (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 	show_boot_progress (55);
 
 	printf ("\nLoading from device %d: %s at 0x%lx (offset 0x%lx)\n",
-	    dev, nand_dev_desc[dev].name, nand_dev_desc[dev].IO_ADDR,
-	    offset);
+	    dev, nand_dev_desc[dev].name + gd->reloc_off,
+	    nand_dev_desc[dev].IO_ADDR, offset);
 
 	if (nand_legacy_rw (nand_dev_desc + dev, NANDRW_READ, offset,
 			    SECTORSIZE, NULL, (u_char *)addr)) {
-- 
1.5.2.5

[U-Boot] [PATCH] NAND: cmd_nand.c: fix invalid pointers to static relocated chip names

[Jean-Christophe PLAGNIOL-VILLARD]

On 15:13 Mon 19 Jan     , gvv at horse.lst.loc wrote:
> When U-boot starting from NAND the pointers to chip names are set before relocation.
> If the original memory block is overwritten after relocation that led to invalid
> string data in the nand utility.

what will happen when it does not start from nand but an other device??

btw please fix you mailer to show your real address in the From

Best Regards,
J.

[U-Boot] [PATCH] NAND: cmd_nand.c: fix invalid pointers tostatic relocated chip names

[Valeriy Glushkov]

I have not tried it for non-NAND boot, but it should work for any type of 
boot devices where gd->reloc_off is set properly.

The previous version still works for nay NOR boot, as the non-relocated 
pointers to static strings are always point to the RO data in the NOR.
But for the NAND boot where we start directly from RAM, this happens, 
because the initial non-relocated memory can be overwritten any time...

Best regards,
Valeriy Glushkov

P.S. Sorry for the invalid email address. Fixed.

----- Original Message ----- 
From: "Jean-Christophe PLAGNIOL-VILLARD" <plagnioj@jcrosoft.com>
To: "Valeriy Glushkov" <gvv@lstec.com>
Cc: <u-boot@lists.denx.de>
Sent: 19 ?????? 2009 ?. 15:05
Subject: Re: [U-Boot] [PATCH] NAND: cmd_nand.c: fix invalid pointers 
tostatic relocated chip names


> On 15:13 Mon 19 Jan     , gvv at horse.lst.loc wrote:
>> When U-boot starting from NAND the pointers to chip names are set before 
>> relocation.
>> If the original memory block is overwritten after relocation that led to 
>> invalid
>> string data in the nand utility.
>
> what will happen when it does not start from nand but an other device??
>
> btw please fix you mailer to show your real address in the From
>
> Best Regards,
> J. 

[U-Boot] [PATCH] NAND: cmd_nand.c: fix invalid pointers to static relocated chip names

[Valeriy Glushkov]

When U-boot starting from NAND the pointers to chip names are set before relocation.
If the original memory block is overwritten after relocation that led to invalid
string data in the nand utility.

Signed-off-by: Valeriy Glushkov <gvv@lstec.com>
---
diff --git a/common/cmd_nand.c b/common/cmd_nand.c
index b94a2bf..14925cd 100644
--- a/common/cmd_nand.c
+++ b/common/cmd_nand.c
@@ -10,6 +10,7 @@
 
 #include <common.h>
 
+DECLARE_GLOBAL_DATA_PTR;
 
 #ifndef CONFIG_NAND_LEGACY
 /*
@@ -193,7 +194,7 @@ int do_nand(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 		for (i = 0; i < CFG_MAX_NAND_DEVICE; i++) {
 			if (nand_info[i].name)
 				printf("Device %d: %s, sector size %u KiB\n",
-				       i, nand_info[i].name,
+				       i, nand_info[i].name + gd->reloc_off,
 				       nand_info[i].erasesize >> 10);
 		}
 		return 0;
@@ -207,7 +208,7 @@ int do_nand(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 				puts("\nno devices available\n");
 			else
 				printf("\nDevice %d: %s\n", nand_curr_device,
-				       nand_info[nand_curr_device].name);
+				       nand_info[nand_curr_device].name + gd->reloc_off);
 			return 0;
 		}
 		dev = (int)simple_strtoul(argv[2], NULL, 10);
@@ -215,7 +216,7 @@ int do_nand(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 			puts("No such device\n");
 			return 1;
 		}
-		printf("Device %d: %s", dev, nand_info[dev].name);
+		printf("Device %d: %s", dev, nand_info[dev].name + gd->reloc_off);
 		puts("... is now current device\n");
 		nand_curr_device = dev;
 
@@ -993,8 +994,8 @@ int do_nandboot (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 	show_boot_progress (55);
 
 	printf ("\nLoading from device %d: %s at 0x%lx (offset 0x%lx)\n",
-	    dev, nand_dev_desc[dev].name, nand_dev_desc[dev].IO_ADDR,
-	    offset);
+	    dev, nand_dev_desc[dev].name + gd->reloc_off,
+	    nand_dev_desc[dev].IO_ADDR, offset);
 
 	if (nand_legacy_rw (nand_dev_desc + dev, NANDRW_READ, offset,
 			    SECTORSIZE, NULL, (u_char *)addr)) {
-- 
1.5.2.5

[U-Boot] [PATCH] NAND: cmd_nand.c: fix invalid pointers to static relocated chip names

[Wolfgang Denk]

Dear Valeriy Glushkov,

In message <12323711841178-git-send-email-gvv@lstec.com> you wrote:
> When U-boot starting from NAND the pointers to chip names are set before relocation.
> If the original memory block is overwritten after relocation that led to invalid
> string data in the nand utility.

This means that the pointers need to be manually relocated.

> -				       i, nand_info[i].name,
> +				       i, nand_info[i].name + gd->reloc_off,

Such relocation shouldbe done exactly once, right after relocation.

Doing this everywhere where the pointers are references is error
prone, ugly and wastes memory.

Please change your patch to fix the pointers. Thanks.

Best regards,

Wolfgang Denk

-- 
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
"We all agree on the necessity of compromise. We just can't agree  on
when it's necessary to compromise."
                - Larry Wall in  <1991Nov13.194420.28091@netlabs.com>

[U-Boot] [PATCH] NAND: cmd_nand.c: fix invalid pointers to static relocated chip names

[gvv at horse.lst.loc]

When U-boot starting from NAND the pointers to chip names are set before relocation.
If the original memory block is overwritten after relocation that led to invalid
string data in the nand utility.

Signed-off-by: Valeriy Glushkov <gvv@lstec.com>
---
diff --git a/common/cmd_nand.c b/common/cmd_nand.c
index b94a2bf..14925cd 100644
--- a/common/cmd_nand.c
+++ b/common/cmd_nand.c
@@ -10,6 +10,7 @@
 
 #include <common.h>
 
+DECLARE_GLOBAL_DATA_PTR;
 
 #ifndef CONFIG_NAND_LEGACY
 /*
@@ -193,7 +194,7 @@ int do_nand(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 		for (i = 0; i < CFG_MAX_NAND_DEVICE; i++) {
 			if (nand_info[i].name)
 				printf("Device %d: %s, sector size %u KiB\n",
-				       i, nand_info[i].name,
+				       i, nand_info[i].name + gd->reloc_off,
 				       nand_info[i].erasesize >> 10);
 		}
 		return 0;
@@ -207,7 +208,7 @@ int do_nand(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 				puts("\nno devices available\n");
 			else
 				printf("\nDevice %d: %s\n", nand_curr_device,
-				       nand_info[nand_curr_device].name);
+				       nand_info[nand_curr_device].name + gd->reloc_off);
 			return 0;
 		}
 		dev = (int)simple_strtoul(argv[2], NULL, 10);
@@ -215,7 +216,7 @@ int do_nand(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 			puts("No such device\n");
 			return 1;
 		}
-		printf("Device %d: %s", dev, nand_info[dev].name);
+		printf("Device %d: %s", dev, nand_info[dev].name + gd->reloc_off);
 		puts("... is now current device\n");
 		nand_curr_device = dev;
 
@@ -993,8 +994,8 @@ int do_nandboot (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 	show_boot_progress (55);
 
 	printf ("\nLoading from device %d: %s at 0x%lx (offset 0x%lx)\n",
-	    dev, nand_dev_desc[dev].name, nand_dev_desc[dev].IO_ADDR,
-	    offset);
+	    dev, nand_dev_desc[dev].name + gd->reloc_off,
+	    nand_dev_desc[dev].IO_ADDR, offset);
 
 	if (nand_legacy_rw (nand_dev_desc + dev, NANDRW_READ, offset,
 			    SECTORSIZE, NULL, (u_char *)addr)) {
-- 
1.5.2.5