Hello,

This is my first steps in implementing a bootloader on this platform. My platform is the Virtex-5 Avnet V5FX30T with a PPC440 CPU. For the first tests, I would like to download and start directly U-Boot from the RAM. I'm using ELDK as the cross toolchain. Here is the detailed step that I did:

In EDK:

* Create project using the base system builder * Activate cache on Flash and DDR RAM * Set STDIN/STDOUT to Serial, Boot Memory to BRAM * Modify base address of RAM from 0x04000000 to 0x0 (high address is now 0x03FFFFFF) * Generate linux_2_6 BSP (xparameters.h) * In the file xparameters.h, replace XPAR_FLASH_8MX16* with XPAR_FLASH*, and XPAR_DDR2_SDRAM_16MX32* with XPAR_DDR2_SDRAM*. * Update the Bistream (put default bootloop in BRAM) * Generate FPGA Bitstream * Download FPGA Bitstream to the device

In linux console:

* Un-tar u-boot * Copy the file xparameters.h generated with EDK in u-boot/board/avnet/v5fx30teval * export ARCH=powerpc * export CROSS_COMPILE=ppc_4xx- * make v5fx30teval_config * make * Open a serial console at 115200,8,N,1 (seems to be the default according to xilinx-ppc.h)

In XMD:

* dow u-boot * run

At this point, I see nothing in the console. After a couple of seconds I stop the processor and the PC register is at 0xFFFFFFFC. Does someone can give me some hints on how to find the problem?

Here is the address map:

Address Map for Processor ppc440_0 (0b0000000000-0b0011111111) ppc440_0 (0000000000-0x03ffffff) DDR2_SDRAM_16Mx32 ppc440_0_PPC440MC (0x81000000-0x8100ffff) Ethernet_MAC plb_v46_0 (0x81800000-0x8180ffff) xps_intc_0 plb_v46_0 (0x83e00000-0x83e0ffff) RS232 plb_v46_0 (0xd8000000-0xd8ffffff) FLASH_8Mx16 plb_v46_0 (0xffff8000-0xffffffff) xps_bram_if_cntlr_1 plb_v46_0

Here is the log of my XMD session:

Xilinx Microprocessor Debug (XMD) Engine Xilinx EDK 10.1.03 Build EDK_K_SP3.6 Copyright (c) 1995-2007 Xilinx, Inc. All rights reserved.

Overriding IP level properties ... Address Map for Processor ppc440_0 (0b0000000000-0b0011111111) ppc440_0 (0000000000-0x03ffffff) DDR2_SDRAM_16Mx32 ppc440_0_PPC440MC (0x81000000-0x8100ffff) Ethernet_MAC plb_v46_0 (0x81800000-0x8180ffff) xps_intc_0 plb_v46_0 (0x83e00000-0x83e0ffff) RS232 plb_v46_0 (0xd8000000-0xd8ffffff) FLASH_8Mx16 plb_v46_0 (0xffff8000-0xffffffff) xps_bram_if_cntlr_1 plb_v46_0

XMD% Info:Connecting to cable (Usb Port - USB21). Info:Checking cable driver. Info: Driver file xusb_xlp.sys found. Info: Driver version: src=1029, dest=1029. Info: Driver windrvr6.sys version = 8.1.1.0.Info: WinDriver v8.11 Jungo (c) 1997 - 2006 Build Date: Oct 16 2006 X86 32bit SYS 12:35:07, version = 811. Info: Cable PID = 0008. Info: Max current requested during enumeration is 74 mA. Info:Type = 0x0004. Info: Cable Type = 3, Revision = 0. Info: Setting cable speed to 750 KHz. Info:Cable connection established. Info:Firmware version = 1303. Info:File version of C:/Xilinx/10.1/ISE/data/xusb_xlp.hex = 1303. Info:Firmware hex file version = 1303. Info:PLD file version = 0012h. Info: PLD version = 0012h.

JTAG chain configuration -------------------------------------------------- Device ID Code IR Length Part Name 1 63276093 10 XC5VFX30T_U

PowerPC440 Processor Configuration ------------------------------------- Version.............................0x7ff21912 User ID.............................0x00f00002 No of PC Breakpoints................4 No of Addr/Data Watchpoints.........2 User Defined Address Map to access Special PowerPC Features using XMD: I-Cache (Data)........0x70000000 - 0x70007fff I-Cache (TAG).........0x70008000 - 0x7000ffff D-Cache (Data)........0x78000000 - 0x78007fff D-Cache (TAG).........0x78008000 - 0x7800ffff DCR...................0x78020000 - 0x78020fff TLB...................0x70020000 - 0x70023fff

Connected to "ppc" target. id = 0 Starting GDB server for "ppc" target (id = 0) at TCP port no 1234 XMD% dow u-boot System Reset .... DONE Downloading Program -- u-boot section, .text: 0x03000000-0x0301fe9f section, .bootpg: 0x0301fea0-0x03020167 section, .resetvec: 0x03020168-0x0302016b section, .rodata: 0x0302016c-0x0302743b section, .reloc: 0x03027500-0x03028e0b section, .data: 0x03028e0c-0x03028fe7 section, .data.rel.ro.local: 0x03028fe8-0x03029113 section, .data.rel: 0x03029114-0x03029257 section, .data.rel.ro: 0x03029258-0x030292b3 section, .data.rel.local: 0x030292b4-0x03029a9f section, .u_boot_cmd: 0x03029aa0-0x0302a183 section, .bss: 0x0302a200-0x0302c82f Setting PC with Program Start Address 0x0301fea0

XMD% rrd r0: 30000000 r8: 03fcd834 r16: 03ff86c0 r24: 03fccbfc r1: 03f69d38 r9: 17d78400 r17: 03f5e5b8 r25: 03f69f28 r2: 03f69f28 r10: 00000030 r18: 00000000 r26: 03f69f08 r3: 00000001 r11: 05f5e100 r19: ffffffff r27: 03fca000 r4: 00000000 r12: 44000022 r20: 00000000 r28: 03f6a000 r5: 00000000 r13: 0000a5a5 r21: 03f69d90 r29: 03f69da0 r6: 00000000 r14: 03ff5d1c r22: 00000000 r30: 03ffe924 r7: 0401f6d8 r15: 00fca000 r23: 03fcc228 r31: a0800000 pc: 0301fea0 msr: 00000000 XMD% run Info:Processor started. Type "stop" to stop processor

RUNNING> XMD% stop XMD% Info:User Interrupt, Processor Stopped at 0xfffffffc

XMD% rrd r0: 30000000 r8: 03fd6800 r16: 03ff86c0 r24: 03fd5bfc r1: 03f72d28 r9: 17d78400 r17: 03f5e5b8 r25: 03f72f28 r2: 03f72f28 r10: 00000030 r18: 00000000 r26: 03f72f08 r3: 00000001 r11: 05f5e100 r19: ffffffff r27: 03fd3000 r4: 00000000 r12: ffffffff r20: 00000000 r28: 03f73000 r5: 00000000 r13: 0000a5a5 r21: 03f72d90 r29: 03f72da0 r6: 00000000 r14: 03ff5d1c r22: 00000000 r30: 04002524 r7: 03de91ff r15: 00fd3000 r23: 03fd5228 r31: a0800000 pc: fffffffc msr: 00000000 XMD%

------------------------------------ Philippe Hamelin, ing. jr, M. Ing Chercheur / Researcher

T: 450-652-8499 x2198 F: 450-652-1316

Expertise robotique et civil Institut de recherche d'Hydro-Québec (IREQ) 1740, boul. Lionel-Boulet Varennes (QC) J3X 1S1, Canada