Pls find the partitions in arch/arm/mach-davinci/board-dm646x-evm.c
static struct mtd_partition davinci_nand_partitions[] = {
{
/* U-Boot environment */
.name = "params",
.offset = 0,
.size = 1 * NAND_BLOCK_SIZE,
.mask_flags = 0,
}, {
/* UBL, U-Boot */
.name = "bootloader",
.offset = MTDPART_OFS_APPEND,
.size = 10 * NAND_BLOCK_SIZE,
.mask_flags = MTD_WRITEABLE, /* force read-only */
}, {
.name = "kernel",
.offset = MTDPART_OFS_APPEND,
.size = SZ_4M,
.mask_flags = 0,
}, {
.name = "filesystem",
.offset = MTDPART_OFS_APPEND,
.size = MTDPART_SIZ_FULL,
.mask_flags = 0,
}
};
Thanks & Regards,
Raghu Ramaraj
-----Original Message-----
From: Caglar Akyuz [mailto:[email protected]]
Sent: Wednesday, August 25, 2010 1:43 PM
To: [email protected]
Cc: Raghu Ramaraj; Jose, Frangline
Subject: Re: need help- fw_printenv& fw_setenv
On Wednesday 25 August 2010 10:28:37 am Raghu Ramaraj wrote:
> Hi,
> We facing some issue while using fw_printenv and fw_setenv ( uboot
> tools). Pls find the logs/steps below I have used linux 2.6.32 rc5 kernel
> source.
>
>
> 1) MTD partition in the kernel level
>
> Cat /proc/mtd
> mtd0: 00020000 00004000 "params"
> mtd1: 00140000 00004000 "bootloader"
> mtd2: 00400000 00004000 "kernel"
> mtd3: 03aa0000 00004000 "file system"
> param & bootloader partitions are interchanged ?
>
> 2) Cat /dev/mtd0 ->its displaying param related information
>
>
> 3) I have used /etc/fw_env.config file
>
>
> /dev/mtd0 0x0000 0x4000 0x4000
> /dev/mtd1 0x4000 0x4000 0x4000
>
>
> 4) If I do ./fw_printenv , I am getting the all the boot params
> 5) If I do ./fw_setenv bootdelay , I am getting the following
> Permission denied
>
AFAIR, params partition is set read-only in board file.
Regards,
Caglar
>
> Losg are..............
>
>
> [email protected]:/home/raghu/env# cat /proc/mtd
> dev: size erasesize name
> mtd0: 00020000 00004000 "params"
> mtd1: 00140000 00004000 "bootloader"
> mtd2: 00400000 00004000 "kernel"
> mtd3: 03aa0000 00004000 "filesystem"
> [email protected]:/home/raghu/env# cat /dev/mtd0
> uEÈbootdelay=3baudrate=115200bootfile="uImage"addclk=setenv bootargs
> ${bootargs} clkref=${clkref}ethact=DaVinci
> EMACfilesize=D9CB0Ffileaddr=87000000gatewayip=17
> 2.22.64.1netmask=255.255.240.0ipaddr=172.22.66.43bootcmd=ping
> 192.168.1.1;nand r ead 0x84600000 0x4a0000 0x1400000;nboot 0x80700000 0
> 0xa0000;bootmserverip=172.2
> 2.75.253ethaddr=00:0e:99:02:b5:69clkref=33000000stdin=serialstdout=serials
> tderr= serialver=U-Boot 2009.08 (Jul 10 2010 -
> 11:44:06)bootargs=console=ttyS0,115200n8 noinitrd rw root=/dev/nfs
> nfsroot=172.22.75.253:/opt/mv_pro_5.0/montavista/pro/
> devkit/arm/v5t_le/target/,nolock mem=80M eth=00:0e:99:02:b5:69 ip=dhcp0 -
> 14:34: 54)0700000 0 0xa0000;bootm
> [email protected]:/home/raghu/env# ./fw_printenv
> ootdelay=3
> baudrate=115200
> bootfile="uImage"
> addclk=setenv bootargs ${bootargs} clkref=${clkref}
> ethact=DaVinci EMAC
> filesize=D9CB0F
> fileaddr=87000000
> gatewayip=172.22.64.1
> netmask=255.255.240.0
> ipaddr=172.22.66.43
> bootcmd=ping 192.168.1.1;nand read 0x84600000 0x4a0000 0x1400000;nboot
> 0x8070000 0 0 0xa0000;bootm
> serverip=172.22.75.253
> ethaddr=00:0e:99:02:b5:69
> clkref=33000000
> stdin=serial
> stdout=serial
> stderr=serial
> ver=U-Boot 2009.08 (Jul 10 2010 - 11:44:06)
> bootargs=console=ttyS0,115200n8 noinitrd rw root=/dev/nfs
> nfsroot=172.22.75.253:
> /opt/mv_pro_5.0/montavista/pro/devkit/arm/v5t_le/target/,nolock mem=80M
> eth=00:0 e:99:02:b5:69 ip=dhcp
> [email protected]:/home/raghu/env# ./fw_setenv bootdelay 0
> Can't open /dev/mtd1: Permission denied
> Error: can't write fw_env to flash
> [email protected]:/home/raghu/env#
>
>
>
> Thanks & Regards
> Raghu Ramaraj
>
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