On Mon, Jun 03, 2019 at 05:27:52PM -0000, Stuart Henderson wrote: > On 2019-06-02, Артур Истомин <art.is...@yandex.ru> wrote: > > I'm trying update BIOS on alix2d13 board with flashrom ver 1.0 on OpenBSD > > 6.5 > > > > # flashrom -w alix1.bin -p internal > > flashrom v1.0 on OpenBSD 6.5 (i386) > > flashrom is free software, get the source code at https://flashrom.org > > > > Calibrating delay loop... delay loop is unreliable, trying to continue OK. > > No DMI table found. > > Found chipset "AMD CS5536". > > Enabling flash write... Error while opening /dev/amdmsr: Device not > > configured > > FAILED! > > Warning: unexpected second chipset match: "AMD CS5536" > > ignoring, please report lspci and board URL to flash...@flashrom.org > > with 'CHIPSET: your board name' in the subject line. > > No EEPROM/flash device found. > > Note: flashrom can never write if the flash chip isn't found automatically. > > > > What's wrong? > > Looks like this flash device can only be programmed with model-specific > registers (MSRs). On OpenBSD this is done via amdmsr(4) which requires > 2 things: 1: it must be detected and attached in the kernel, and 2: > machdep.allowaperture must be set (normally on OpenBSD this device > is used for access to graphics with X). > > If 1 fails you get ENXIO "Device not configured", if 2 fails you get > EPERM "Operation not permitted". > > On your system the device does not attach (no amdmsr attach line in dmesg). > Looking at amdmsr_probe() in /sys/arch/i386/i386/amdmsr.c I see this > > 74 /* Check for AMD Geode LX CPU */ > 75 if (strcmp(cpu_vendor, "AuthenticAMD") == 0 && family == 0x5 && > 76 model == 0x0a) { > 77 /* Check for graphics processor presence */ > 78 gld_msr_cap = rdmsr(GLX_CPU_GLD_MSR_CAP); > 79 if (((gld_msr_cap >> 8) & 0x0fff) == GLX_CPU_DID) { > 80 gld_msr_cap = rdmsr(GLX_GP_GLD_MSR_CAP); > 81 if (((gld_msr_cap >> 8) & 0x0fff) == GLX_GP_DID) > 82 return 1; > 83 } > 84 } > > > > > > dmesg: > > > > OpenBSD 6.5 (GENERIC) #1: Wed Apr 24 22:04:27 CEST 2019 > > r...@syspatch-65-i386.openbsd.org:/usr/src/sys/arch/i386/compile/GENERIC > > real mem = 267931648 (255MB) > > avail mem = 247779328 (236MB) > > mpath0 at root > > scsibus0 at mpath0: 256 targets > > mainbus0 at root > > bios0 at mainbus0: date 11/05/08, BIOS32 rev. 0 @ 0xfd088 > > pcibios0 at bios0: rev 2.1 @ 0xf0000/0x10000 > > pcibios0: pcibios_get_intr_routing - function not supported > > pcibios0: PCI IRQ Routing information unavailable. > > pcibios0: PCI bus #0 is the last bus > > bios0: ROM list: 0xe0000/0xa800 > > cpu0 at mainbus0: (uniprocessor) > > cpu0: Geode(TM) Integrated Processor by AMD PCS ("AuthenticAMD" 586-class) > > 499 MHz, 05-0a-02 > > The family/model (05/0a) match but the driver is not attaching so it must be > failing the "Check for graphics processor presence" check. > > If you were to remove that check, maybe it will work, or maybe it will > fail horribly and you will brick your board. > > Personally I would recommend following pcengines' suggested procedure > and use their freedos image for alix.
I see. Thank you for thoughful explanation!
