Hi Clement, i tested you patches on my MIPS board. I get following ooops: =============================================================================== barebox@DPTechnics DPT-Module:/ iomem 0x00000000 - 0xffffffff (size 0x00000000) iomem 0x18020000 - 0x18020013 (size 0x00000014) 18020000.uart@18020000.of 0x18040000 - 0x18040033 (size 0x00000034) 18040000.gpio@18040000.of 0x18050000 - 0x180500ff (size 0x00000100) 18050000.pll-controller@18050000.of 0x18060008 - 0x1806000f (size 0x00000008) 18060008.wdt@18060008.of 0x18070000 - 0x180700ff (size 0x00000100) 19000000.ethernet@19000000.of 0x19000000 - 0x190001ff (size 0x00000200) 19000000.ethernet@19000000.of 0x1f000000 - 0x1f00000f (size 0x00000010) 1f000000.spi@1f000000.of 0x80000000 - 0x83ffffff (size 0x04000000) kseg0_ram0 0x80000000 - 0x80007fff (size 0x00008000) vector 0x83788000 - 0x8378ffff (size 0x00008000) stack 0x83790000 - 0x83f8ffff (size 0x00800000) malloc space 0x83f90000 - 0x83fe66df (size 0x000566e0) barebox 0x83fe66e0 - 0x83feb0bf (size 0x000049e0) barebox data 0x83ff30c0 - 0x83ff5fe7 (size 0x00002f28) bss barebox@DPTechnics DPT-Module:/ boot net Booting entry 'net' eth0: DHCP client bound to address 192.168.26.229 Entry Point: 00000000 Loading ELF '/mnt/tftp/ore-linux-dpt-module' Loading devicetree from '/mnt/tftp/ore-oftree-dpt-module' Starting application at 0x80000000, dts 0x837c325c... Ooops, TLB miss on load or ifetch! $ 0 : 00000000 00000020 00000000 80010000 $ 4 : fffffffe 83a80000 00010000 00008000 $ 8 : 83790008 8379b440 8379b440 8379b5ec $12 : 83790000 00010000 00000060 00000011 $16 : 837c3728 ffffffea 83a80000 80000000 $20 : 00000000 00000000 00000000 00000000 $24 : 00000000 00000000 $28 : 83e6c000 8378fc30 83fdfa20 83fd55cc Hi : 00063c6c Lo : 60000000 epc : 00000000 ra : 83fd55cc Status: 10000002 Cause : 40008008 Config: 80208483 ### ERROR ### Please RESET the board ### =============================================================================== The same test without patches looks like this: rebox@DPTechnics DPT-Module:/ boot net Booting entry 'net' eth0: DHCP client bound to address 192.168.26.229 Loading ELF '/mnt/tftp/ore-linux-dpt-module' Loading devicetree from '/mnt/tftp/ore-oftree-dpt-module' Starting application at 0x80980000, dts 0x837c2e54... [ 0.000000] Linux version 5.7.0-rc1-rt7-00316-g9b716caac68c9 (ptxdist@ptxdist) (gcc version 9.2.1 20191130 (OSELAS.Toolchain-2019.09.1 9-20191130), GNU ld (GNU Binutils) 2.32) #1 PREEMPT 2020-04-23T06:16:46+00:00 [ 0.000000] printk: bootconsole [early0] enabled [ The main difference is: Starting application at 0x80980000, dts 0x837c2e54... <<- works Starting application at 0x80000000, dts 0x837c325c... <<- oops Even with applied patch to protect exception vectore code, we still overwriting it: 0x80000000 - 0x80007fff (size 0x00008000) vector Any ideas? On Tue, Apr 28, 2020 at 09:50:53AM +0200, Clement Leger wrote: > Currently, when booting an elf file using "bootm /dev/mtdx", bootm will > simply pass the file to the bootm and the read done on it will read the > entire flash partition. This series starts by some cleanup and then add an > elf_open function to load the elf file size only based on the elf header. > A special handling for the elf file is also added in bootm data to allow > using directly the elf file structure. Finally the mips bootm is modified > to use bootm_load_os directly instead of manual elf loading. > > Changes v2 -> v3 > - Integrate elf loading in bootm_load_os > - Add patch to remove now unused elf_load_image/elf_release_image > - Use malloc instead of xmalloc and check return value > > Changes v1 -> v2 > - Add BOOTM_ELF config to select elf support and add checks in code > - Add an elf_get_mem_size function to avoid computing elf size in bootm.c > - Use xmalloc and read_full in elf_open instead of xzalloc/read > - Fix data->elf NULL reset > - Remove elf struct entirely from mips bootm code > > Clement Leger (7): > common: elf: add computation of elf boundaries > common: elf: fix warning on 32 bits architectures > common: elf: split init to be reused from other function > common: elf: add elf_open, elf_close and elf_load > common: bootm: add support for elf file loading > mips: lib: bootm: use bootm elf loading capabilities > common: elf: remove elf_load_image/elf_release_image > > arch/mips/lib/bootm.c | 31 +++++------- > common/Kconfig | 8 ++++ > common/bootm.c | 33 +++++++++++++ > common/elf.c | 107 ++++++++++++++++++++++++++++++++++++------ > include/bootm.h | 3 ++ > include/elf.h | 16 ++++++- > 6 files changed, 161 insertions(+), 37 deletions(-) > > -- > 2.17.1 > > > _______________________________________________ > barebox mailing list > barebox@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/barebox > -- Pengutronix e.K. | | Steuerwalder Str. 21 | http://www.pengutronix.de/ | 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |