From: Joel Stanley <joel@jms.id.au> To: Ard Biesheuvel <ardb@kernel.org> Cc: "Marek Szyprowski" <m.szyprowski@samsung.com>, "Linux ARM" <linux-arm-kernel@lists.infradead.org>, "Linux Samsung SOC" <linux-samsung-soc@vger.kernel.org>, "Krzysztof Kozlowski" <krzk@kernel.org>, "Linus Walleij" <linus.walleij@linaro.org>, "Florian Fainelli" <f.fainelli@gmail.com>, "Russell King" <linux@armlinux.org.uk>, "Rob Herring" <robh+dt@kernel.org>, "Nicolas Pitre" <nico@fluxnic.net>, "Cédric Le Goater" <clg@kaod.org> Subject: Re: [PATCH v2 2/2] ARM: move device tree mapping out of linear region Date: Wed, 28 Oct 2020 12:59:20 +0000 [thread overview] Message-ID: <CACPK8Xfw0WYSxGf0PnVOF40+C-KOJnX2x_q2gXrf4JZPErKBDA@mail.gmail.com> (raw) In-Reply-To: <CAMj1kXH90MzCUJ_DHZ_2=JcWBX=Qf1PT-A9PX9EeBTVx22EkaQ@mail.gmail.com> On Wed, 28 Oct 2020 at 12:53, Ard Biesheuvel <ardb@kernel.org> wrote: > > On Wed, 28 Oct 2020 at 13:05, Joel Stanley <joel@jms.id.au> wrote: > > > > On Wed, 28 Oct 2020 at 09:19, Marek Szyprowski <m.szyprowski@samsung.com> wrote: > > > This patch landed in linux-next 20201028 as commit 7a1be318f579 ("ARM: > > > 9012/1: move device tree mapping out of linear region"). Sadly it broke > > > booting almost all Samsung Exynos-based boards. The only one which > > > booted, used an appended device tree. I can provide more information if > > > needed, just let me know what to check. "Starting kernel ..." is the > > > last message I see here. No output from earlycon. > > > > A bisection lead me to this patch after the next-20201028 failed to > > boot on the aspeed systems in testing (aspeed_g5_defconfig). > > > > You can reproduce this with today's next and qemu 5.1: > > > > qemu-system-arm -M romulus-bmc -nographic \ > > -kernel arch/arm/boot/zImage \ > > -dtb arch/arm/boot/dts/aspeed-bmc-opp-romulus.dtb \ > > -initrd any-old-file > > > > It requires the initrd option to reproduce, but the initrd doesn't > > need to be valid as we don't make it that far. > > > > There is no output but attaching gdb shows the kernel is stuck in > > setup_machine_tags. (If we enable CONFIG_ATAGS it is instead stuck in > > calibrate_delay). > > > > (gdb) bt > > #0 setup_machine_tags (machine_nr=<optimized out>, > > __atags_vaddr=<optimized out>) at ../arch/arm/kernel/atags.h:12 > > #1 setup_arch (cmdline_p=0x80c01fc4) at ../arch/arm/kernel/setup.c:1100 > > #2 0x80b00d2c in start_kernel () at ../init/main.c:862 > > #3 0x00000000 in ?? () > > > > Reverting 7a1be318f579 on top of next allowed the system to boot again. > > > > Does this help? Yes, that boots to userspace. > > diff --git a/arch/arm/include/asm/memory.h b/arch/arm/include/asm/memory.h > index bb79e52aeb90..4f355bda872a 100644 > --- a/arch/arm/include/asm/memory.h > +++ b/arch/arm/include/asm/memory.h > @@ -68,8 +68,8 @@ > #define XIP_VIRT_ADDR(physaddr) (MODULES_VADDR + ((physaddr) & 0x000fffff)) > > #define FDT_FIXED_BASE UL(0xff800000) > -#define FDT_FIXED_SIZE (2 * PMD_SIZE) > -#define FDT_VIRT_ADDR(physaddr) ((void *)(FDT_FIXED_BASE | > (physaddr) % PMD_SIZE)) > +#define FDT_FIXED_SIZE (2 * SECTION_SIZE) > +#define FDT_VIRT_ADDR(physaddr) ((void *)(FDT_FIXED_BASE | > (physaddr) % SECTION_SIZE)) > > #if !defined(CONFIG_SMP) && !defined(CONFIG_ARM_LPAE) > /*
WARNING: multiple messages have this Message-ID (diff)
From: Joel Stanley <joel@jms.id.au> To: Ard Biesheuvel <ardb@kernel.org> Cc: "Florian Fainelli" <f.fainelli@gmail.com>, "Nicolas Pitre" <nico@fluxnic.net>, "Linus Walleij" <linus.walleij@linaro.org>, "Russell King" <linux@armlinux.org.uk>, "Krzysztof Kozlowski" <krzk@kernel.org>, "Rob Herring" <robh+dt@kernel.org>, "Linux Samsung SOC" <linux-samsung-soc@vger.kernel.org>, "Cédric Le Goater" <clg@kaod.org>, "Linux ARM" <linux-arm-kernel@lists.infradead.org>, "Marek Szyprowski" <m.szyprowski@samsung.com> Subject: Re: [PATCH v2 2/2] ARM: move device tree mapping out of linear region Date: Wed, 28 Oct 2020 12:59:20 +0000 [thread overview] Message-ID: <CACPK8Xfw0WYSxGf0PnVOF40+C-KOJnX2x_q2gXrf4JZPErKBDA@mail.gmail.com> (raw) In-Reply-To: <CAMj1kXH90MzCUJ_DHZ_2=JcWBX=Qf1PT-A9PX9EeBTVx22EkaQ@mail.gmail.com> On Wed, 28 Oct 2020 at 12:53, Ard Biesheuvel <ardb@kernel.org> wrote: > > On Wed, 28 Oct 2020 at 13:05, Joel Stanley <joel@jms.id.au> wrote: > > > > On Wed, 28 Oct 2020 at 09:19, Marek Szyprowski <m.szyprowski@samsung.com> wrote: > > > This patch landed in linux-next 20201028 as commit 7a1be318f579 ("ARM: > > > 9012/1: move device tree mapping out of linear region"). Sadly it broke > > > booting almost all Samsung Exynos-based boards. The only one which > > > booted, used an appended device tree. I can provide more information if > > > needed, just let me know what to check. "Starting kernel ..." is the > > > last message I see here. No output from earlycon. > > > > A bisection lead me to this patch after the next-20201028 failed to > > boot on the aspeed systems in testing (aspeed_g5_defconfig). > > > > You can reproduce this with today's next and qemu 5.1: > > > > qemu-system-arm -M romulus-bmc -nographic \ > > -kernel arch/arm/boot/zImage \ > > -dtb arch/arm/boot/dts/aspeed-bmc-opp-romulus.dtb \ > > -initrd any-old-file > > > > It requires the initrd option to reproduce, but the initrd doesn't > > need to be valid as we don't make it that far. > > > > There is no output but attaching gdb shows the kernel is stuck in > > setup_machine_tags. (If we enable CONFIG_ATAGS it is instead stuck in > > calibrate_delay). > > > > (gdb) bt > > #0 setup_machine_tags (machine_nr=<optimized out>, > > __atags_vaddr=<optimized out>) at ../arch/arm/kernel/atags.h:12 > > #1 setup_arch (cmdline_p=0x80c01fc4) at ../arch/arm/kernel/setup.c:1100 > > #2 0x80b00d2c in start_kernel () at ../init/main.c:862 > > #3 0x00000000 in ?? () > > > > Reverting 7a1be318f579 on top of next allowed the system to boot again. > > > > Does this help? Yes, that boots to userspace. > > diff --git a/arch/arm/include/asm/memory.h b/arch/arm/include/asm/memory.h > index bb79e52aeb90..4f355bda872a 100644 > --- a/arch/arm/include/asm/memory.h > +++ b/arch/arm/include/asm/memory.h > @@ -68,8 +68,8 @@ > #define XIP_VIRT_ADDR(physaddr) (MODULES_VADDR + ((physaddr) & 0x000fffff)) > > #define FDT_FIXED_BASE UL(0xff800000) > -#define FDT_FIXED_SIZE (2 * PMD_SIZE) > -#define FDT_VIRT_ADDR(physaddr) ((void *)(FDT_FIXED_BASE | > (physaddr) % PMD_SIZE)) > +#define FDT_FIXED_SIZE (2 * SECTION_SIZE) > +#define FDT_VIRT_ADDR(physaddr) ((void *)(FDT_FIXED_BASE | > (physaddr) % SECTION_SIZE)) > > #if !defined(CONFIG_SMP) && !defined(CONFIG_ARM_LPAE) > /* _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2020-10-28 22:03 UTC|newest] Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-10-07 8:39 [PATCH v2 0/2] ARM: move FDT mapping out of linear region Ard Biesheuvel 2020-10-07 8:39 ` [PATCH v2 1/2] ARM: centralize phys-to-virt conversion of DT/ATAGS address Ard Biesheuvel 2020-10-07 15:28 ` Nicolas Pitre 2020-10-07 8:39 ` [PATCH v2 2/2] ARM: move device tree mapping out of linear region Ard Biesheuvel 2020-10-07 15:28 ` Nicolas Pitre 2020-10-07 15:32 ` Ard Biesheuvel 2020-10-07 16:38 ` Nicolas Pitre 2020-10-07 16:40 ` Nicolas Pitre 2020-10-07 21:32 ` Russell King - ARM Linux admin 2020-10-07 22:05 ` Nicolas Pitre [not found] ` <CGME20201028091912eucas1p13fb9cd947faa6bfd79199ea79648b6af@eucas1p1.samsung.com> 2020-10-28 9:19 ` Marek Szyprowski 2020-10-28 9:19 ` Marek Szyprowski 2020-10-28 9:22 ` Ard Biesheuvel 2020-10-28 9:22 ` Ard Biesheuvel 2020-10-28 9:24 ` Ard Biesheuvel 2020-10-28 9:24 ` Ard Biesheuvel 2020-10-28 9:43 ` Marek Szyprowski 2020-10-28 9:43 ` Marek Szyprowski 2020-10-28 12:05 ` Joel Stanley 2020-10-28 12:05 ` Joel Stanley 2020-10-28 12:52 ` Ard Biesheuvel 2020-10-28 12:52 ` Ard Biesheuvel 2020-10-28 12:59 ` Joel Stanley [this message] 2020-10-28 12:59 ` Joel Stanley 2020-10-28 13:00 ` Ard Biesheuvel 2020-10-28 13:00 ` Ard Biesheuvel 2020-10-28 13:06 ` Joel Stanley 2020-10-28 13:06 ` Joel Stanley 2020-10-28 13:00 ` Russell King - ARM Linux admin 2020-10-28 13:00 ` Russell King - ARM Linux admin 2020-10-28 13:04 ` Ard Biesheuvel 2020-10-28 13:04 ` Ard Biesheuvel 2020-10-28 13:09 ` Russell King - ARM Linux admin 2020-10-28 13:09 ` Russell King - ARM Linux admin 2020-10-28 13:16 ` Marek Szyprowski 2020-10-28 13:16 ` Marek Szyprowski 2020-10-11 16:39 ` [PATCH v2 0/2] ARM: move FDT " Ard Biesheuvel
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