Hi all,

I'm working with a ppc board that uses mpc8548e processor. This board has 1GB of ram. I have configured the uboot, but when I run the kernel (linux kernel 2-6-10 from montavista software) with the initrd I have a kernel stack overflow error. We locate the error in the "unpack_rootfs" kernel function when it is read from initrd_start passed by u-boot.

we attach the serial output including the loading u-boot.

/************************************************************/

U-Boot 1.1.4 (Oct 13 2006 - 16:20:46)

CPU: 8548_E, Version: 1.1, (0x80390011) Core: E500, Version: 1.0, (0x80210010) Clock Configuration: CPU:1039 MHz, CCB: 297 MHz, DDR: 148 MHz, LBC: 37 MHz L1: D-cache 32 kB enabled I-cache 32 kB enabled PCI BUS and EEPROM : disabled I2C: ready DRAM: Initializing DDR: sdram_cfg (Phase 1) = 0x42000000

DDR: cs0_bnds = 0x0000001f DDR: cs0_config = 0x80114102 DDR: cs1_bnds = 0x0020003f DDR: cs1_config = 0x80114102 DDR: ext_refrec = 0x00000000 DDR: timing_cfg_0 = 0x00260802 DDR: timing_cfg_1 = 0x3939c322 DDR: timing_cfg_2 = 0x04a04cc8 DDR: sdram_mode = 0x40040452 DDR: sdram_mode_2 = 0x00000000 DDR: sdram_interval = 0x06090100 DDR: sdram_cfg_2 = 0x04600000 DDR: sdram_clk_cntl = 0x03800000 DDR: sdram_cfg (Phase 2) = 0xc3008000 DDR: MAS0=0x10080000 DDR: MAS1=0xc0000900 DDR: MAS2=0x00000000 DDR: MAS3=0x0000003f DDR: MAS0=0x10090000 DDR: MAS1=0xc0000900 DDR: MAS2=0x10000000 DDR: MAS3=0x1000003f DDR: MAS0=0x100a0000 DDR: MAS1=0xc0000900 DDR: MAS2=0x20000000 DDR: MAS3=0x2000003f DDR: MAS0=0x100b0000 DDR: MAS1=0xc0000900 DDR: MAS2=0x30000000 DDR: MAS3=0x3000003f DDR: 1024 MB Top of RAM usable for U-Boot at: 40000000 Reserving 169k for U-Boot at: 3ffd0000 Reserving 136k for malloc() at: 3ffae000 Reserving 80 Bytes for Board Info at: 3ffadfb0 Reserving 48 Bytes for Global Data at: 3ffadf80 Stack Pointer at: 3ffadf68 New Stack Pointer is: 3ffadf68 Now running in RAM - U-Boot at: 3ffd0000 FLASH: flash detect cfi fwc addr fc000000 cmd 0 0 8bit x 8 bit fwc addr fc000055 cmd 98 98 8bit x 8 bit is= cmd 51(Q) addr fc000010 is= ff 51 fwc addr fc000000 cmd 0 0000 16bit x 8 bit fwc addr fc0000aa cmd 98 9898 16bit x 8 bit is= cmd 51(Q) addr fc000020 is= 0051 5151 fwc addr fc000000 cmd 0 0000 16bit x 16 bit fwc addr fc0000aa cmd 98 0098 16bit x 16 bit is= cmd 51(Q) addr fc000020 is= 0051 0051 is= cmd 52(R) addr fc000022 is= 0052 0052 is= cmd 59(Y) addr fc000024 is= 0059 0059 ushort addr is at fc000050 info->portwidth = 2 addr[0] = 0x0 addr[1] = 0x2 addr[2] = 0x0 addr[3] = 0x0 retval = 0x2 device interface is 2 found port 2 chip 2 port 16 bits chip 16 bits ushort addr is at fc000026 info->portwidth = 2 addr[0] = 0x0 addr[1] = 0x2 addr[2] = 0x0 addr[3] = 0x0 retval = 0x2 fc000020 : 00 51 00 52 00 59 00 02 00 00 00 40 00 00 00 00 .Q.R.Y.....@.... fc000030 : 00 00 00 00 00 00 00 27 00 36 00 00 00 00 00 07 .......'.6...... fc000040 : 00 07 00 0a 00 00 00 03 00 05 00 04 00 00 00 1a ................ fc000050 : 00 02 00 00 00 05 00 00 00 01 00 ff 00 01 00 00 ................ fc000060 : 00 02 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ fc000070 : 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ fc000080 : 00 50 00 52 00 49 00 31 00 33 00 10 00 02 00 01 .P.R.I.1.3...... fc000090 : 00 00 00 08 00 00 00 00 00 02 00 b5 00 c5 00 05 ................ manufacturer is 2 size_ratio 1 port 16 bits chip 16 bits found 1 erase regions long addr is at fc00005a info->portwidth = 2 addr[0] = 0x0 addr[1] = 0xff addr[2] = 0x0 addr[3] = 0x1 addr[4] = 0x0 addr[5] = 0x0 addr[6] = 0x0 addr[7] = 0x2 erase_region_count = 512 erase_region_size = 131072 ushort addr is at fc000054 info->portwidth = 2 addr[0] = 0x0 addr[1] = 0x5 addr[2] = 0x0 addr[3] = 0x0 retval = 0x5 fwc addr fc000000 cmd f0 00f0 16bit x 16 bit flash detect cfi fwc addr f4000000 cmd 0 0 8bit x 8 bit fwc addr f4000055 cmd 98 98 8bit x 8 bit is= cmd 51(Q) addr f4000010 is= aa 51 fwc addr f4000000 cmd 0 0000 16bit x 8 bit fwc addr f40000aa cmd 98 9898 16bit x 8 bit is= cmd 51(Q) addr f4000020 is= 0051 5151 fwc addr f4000000 cmd 0 0000 16bit x 16 bit fwc addr f40000aa cmd 98 0098 16bit x 16 bit is= cmd 51(Q) addr f4000020 is= 0051 0051 is= cmd 52(R) addr f4000022 is= 0052 0052 is= cmd 59(Y) addr f4000024 is= 0059 0059 ushort addr is at f4000050 info->portwidth = 2 addr[0] = 0x0 addr[1] = 0x2 addr[2] = 0x0 addr[3] = 0x0 retval = 0x2 device interface is 2 found port 2 chip 2 port 16 bits chip 16 bits ushort addr is at f4000026 info->portwidth = 2 addr[0] = 0x0 addr[1] = 0x2 addr[2] = 0x0 addr[3] = 0x0 retval = 0x2 f4000020 : 00 51 00 52 00 59 00 02 00 00 00 40 00 00 00 00 .Q.R.Y.....@.... f4000030 : 00 00 00 00 00 00 00 27 00 36 00 00 00 00 00 07 .......'.6...... f4000040 : 00 07 00 0a 00 00 00 03 00 05 00 04 00 00 00 1a ................ f4000050 : 00 02 00 00 00 05 00 00 00 01 00 ff 00 01 00 00 ................ f4000060 : 00 02 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ f4000070 : 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ f4000080 : 00 50 00 52 00 49 00 31 00 33 00 10 00 02 00 01 .P.R.I.1.3...... f4000090 : 00 00 00 08 00 00 00 00 00 02 00 b5 00 c5 00 05 ................ manufacturer is 2 size_ratio 1 port 16 bits chip 16 bits found 1 erase regions long addr is at f400005a info->portwidth = 2 addr[0] = 0x0 addr[1] = 0xff addr[2] = 0x0 addr[3] = 0x1 addr[4] = 0x0 addr[5] = 0x0 addr[6] = 0x0 addr[7] = 0x2 erase_region_count = 512 erase_region_size = 131072 ushort addr is at f4000054 info->portwidth = 2 addr[0] = 0x0 addr[1] = 0x5 addr[2] = 0x0 addr[3] = 0x0 retval = 0x5 fwc addr f4000000 cmd f0 00f0 16bit x 16 bit flash_protect ON: from 0xFFF80000 to 0xFFFA4EFF protect on 508 protect on 509 flash_protect ON: from 0xFFFC0000 to 0xFFFFFFFF protect on 510 protect on 511 128 MB L2 cache 512KB: enabled In: serial Out: serial Err: serial U-Boot relocated to 3ffd0000 Net: eTSEC0: PHY is Broadcom BCM5464R (2060b1) eTSEC0: PHY found: Broadcom BCM5464R eTSEC1: PHY is Broadcom BCM5464R (2060b1) eTSEC1: PHY found: Broadcom BCM5464R eTSEC2: PHY is Broadcom BCM5464R (2060b1) eTSEC2: PHY found: Broadcom BCM5464R eTSEC3: PHY is Broadcom BCM5464R (2060b1) eTSEC3: PHY found: Broadcom BCM5464R eTSEC0, eTSEC1, eTSEC2, eTSEC3 ### main_loop entered: bootdelay=10

### main_loop: bootcmd="setenv bootargs root=/dev/nfs rw nfsroot=$serverip:$rootpath ip=$ipaddr:$serverip:$gatewayip:$netmask:$hostname:$netdev:off console" Hit any key to stop autoboot: 0 => setenv ethact eTSEC2 => tftp 1000000 uImage Trying eTSEC2 DEBUG: TSEC INIT !!!!mii_parse_se else!!! Speed: 1000, full duplex Using eTSEC2 device TFTP from server 192.168.0.33; our IP address is 192.168.0.10 Filename 'uImage'. Load address: 0x1000000 Loading: T ################################################################# ################################################################# ################################################################# ################## done Bytes transferred = 1090547 (10a3f3 hex) => tftp 2000000 rootfs.ext2.gz.uboot Trying eTSEC2 DEBUG: TSEC INIT !!!!mii_parse_se else!!! Speed: 1000, full duplex Using eTSEC2 device TFTP from server 192.168.0.33; our IP address is 192.168.0.10 Filename 'rootfs.ext2.gz.uboot'. Load address: 0x2000000 Loading: ################################################################# ################################################################# ################################################################# ################################################################# ################################################################# ################################################################# ################################################################# ################################################################# ################################################################# ############################################## done Bytes transferred = 3228260 (314264 hex) => bootm 1000000 2000000 ## Booting image at 01000000 ... Image Name: Linux-2.6.10_mvl401-8548cds Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 1090483 Bytes = 1 MB Load Address: 00000000 Entry Point: 00000000 Verifying Checksum ... OK Uncompressing Kernel Image ... OK ## Current stack ends at 0x3FFADD48 => set upper limit to 0x00800000 ## cmdline at 0x007FFF00 ... 0x007FFF38 bd address = 0x3FFADFB0 memstart = 0x00000000 memsize = 0x40000000 flashstart = 0xF4000000 flashsize = 0x08000000 flashoffset = 0x00000000 sramstart = 0x00000000 sramsize = 0x00000000 immr_base = 0xEA000000 bootflags = 0xEAC13F80 intfreq = 1039.500 MHz busfreq = 297 MHz ethaddr = 00:E0:0C:00:00:FD eth1addr = 00:E0:0C:00:01:FD eth2addr = 00:E0:0C:00:02:FD eth3addr = 00:E0:0C:00:03:FD IP addr = 192.168.0.10 baudrate = 115200 bps ## Loading RAMDisk Image at 02000000 ... Image Name: uboot ext2 ramdisk rootfs Image Type: PowerPC Linux RAMDisk Image (gzip compressed) Data Size: 3228196 Bytes = 3.1 MB Load Address: 00000000 Entry Point: 00000000 Verifying Checksum ... OK ## initrd at 0x02000040 ... 0x02314263 (len=3228196=0x314224) Loading Ramdisk to 3fc99000, end 3ffad224 ... OK ## Transferring control to Linux (at address 00000000) ... Memory CAM mapping: CAM0=256Mb, CAM1=256Mb, CAM2=256Mb residual: 256Mb mem_pieces_remove: [3fc99000,3ffad224) not in any region Linux version 2.6.10_mvl401-8548cds (root@localhost.localdomain) (gcc version 3.4.3 (MontaVista 3.4.3-25.0.70.0501961 2005-12-18)) #26 Tue Oct 17 14:57:26 6 Garp2_setup_arch Built 1 zonelists Kernel command line: root=/dev/ram rw ramdisk_size=11440 console=ttyS1,115200 OpenPIC Version 1.2 (1 CPUs and 60 IRQ sources) at fdfbe000 PID hash table entries: 4096 (order: 12, 65536 bytes) Console: colour dummy device 80x25 Dentry cache hash table entries: 131072 (order: 7, 524288 bytes) Inode-cache hash table entries: 65536 (order: 6, 262144 bytes) Memory: 776960k available (1684k kernel code, 532k data, 120k init, 0k highmem) Mount-cache hash table entries: 512 (order: 0, 4096 bytes) spawn_desched_task(00000000) desched cpu_callback 3/00000000 ksoftirqd started up. desched cpu_callback 2/00000000 checking if image is initramfs...<2>Kernel stack overflow in process c0961900, r1=c0962070

/************************************************************/

Thanks in advance for the reply.

------------------------------------------------------ Risparmia fino al 30% sulla Rc auto e approffitta dello sconto extra del 10%, fino al 31 Ottobre! Scegli Direct Line! http://click.libero.it/direct_line6