Hi ML, I'm evaluating the qemu-mips to simulate a mips 4kec/24kec board. I'm working on the high level booting sequence (linux init scripts), and qemu+uboot should be a good choice to emulate a basic system (flash + dram + 4kec cpu).
Furthermore, also following the doc/README.qemu_mips, I'm not able to see the u-boot prompt on my qemu because the flash is not recognized. I haven't experience with qemu-mips and I don't understand where the flash is placed (canonical 0xbfxxxx address?) and how it is managed. Reading the configs/qemu_mips.h, It seems that the flash is managed as a common CFI flash placed to 0xbfc00000 address... but u-boot shows always "Unknown FLASH on Bank 1" on startup. Has anyone tried to use qemu-mips to boot a standard u-boot image (qemu_mips target on u-boot)? Thanks for any suggestion. luigi ########### Useful Infos ############ This is the qemu banner (on Ubuntu 8.10): EMU PC emulator version 0.9.1, Copyright (c) 2003-2008 Fabrice Bellard This is the execution log: $ cp ../u-boot-vanilla/u-boot.bin mips_bios.bin $ dd of=flash bs=1k count=4k if=/dev/zero 4096+0 records in 4096+0 records out 4194304 bytes (4,2 MB) copied, 0,046865 s, 89,5 MB/s $ dd of=flash bs=1k conv=notrunc if=../u-boot-vanilla/u-boot.bin 163+1 records in 163+1 records out 167076 bytes (167 kB) copied, 0,00124954 s, 134 MB/s $ qemu-system-mips -M mips -pflash flash -monitor null -nographic qemu: Warning, could not load MIPS bios '/usr/share/qemu/mips_bios.bin' Terminated $ qemu-system-mips -L . -M mips -pflash flash -monitor null -nographic U-Boot 2009.01-00080-g8f86a36 (gen 26 2009 - 09:23:04) Board: Qemu -M mips CPU: 24Kf proc_id=0x19300 DRAM: 128 MB ## Unknown FLASH on Bank 1 - Size = 0x00000000 = 0 MB Terminated $ -- Luigi Mantellini R&D - Software Industrie Dial Face S.p.A. Via Canzo, 4 20068 Peschiera Borromeo (MI), Italy Tel.: +39 02 5167 2813 Fax: +39 02 5167 2459 Email: luigi.mantell...@idf-hit.com _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
