From: Christophe Leroy <christophe.leroy@c-s.fr>
To: "Jonathan Neuschäfer" <j.neuschaefer@gmx.net>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Paul Mackerras <paulus@samba.org>,
Michael Ellerman <mpe@ellerman.id.au>,
linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH v1 03/13] powerpc/mm/32s: rework mmu_mapin_ram()
Date: Thu, 13 Dec 2018 12:16:00 +0000 [thread overview]
Message-ID: <84624899-bbda-9f08-2527-151fddbd1b01@c-s.fr> (raw)
In-Reply-To: <20181203215558.GK15324@latitude>
Hi,
On 12/03/2018 09:55 PM, Jonathan Neuschäfer wrote:
> Hi,
>
> On Thu, Nov 29, 2018 at 07:00:16PM +0000, Christophe Leroy wrote:
>> This patch reworks mmu_mapin_ram() to be more generic and map as much
>> blocks as possible. It now supports blocks not starting at address 0.
>>
>> It scans DBATs array to find free ones instead of forcing the use of
>> BAT2 and BAT3.
>>
>> Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
>> ---
>
> I've just tested this series on my Wii, and starting from this patch
> (03/13), it hangs at the following lines of output:
>
> [ 0.000000] printk: bootconsole [udbg0] enabled
> [ 0.000000] Total memory = 319MB; using 1024kB for hash table (at (ptrval))
>
> Before this patch it looks like this and boots to userspace:
>
> [ 0.000000] printk: bootconsole [udbg0] enabled
> [ 0.000000] Total memory = 319MB; using 1024kB for hash table (at (ptrval))
> [ 0.000000] Linux version 4.20.0-rc5-wii-00022-gfbb911b84755 (jn@longitude) (gcc version 8.2.0 (Debian 8.2.0-9)) #1337 PREEMPT Mon Dec 3 21:49:02 CET 2018
> ug_udbg_init: early -> final
> usbgecko_udbg: ready
> [ 0.000000] Using wii machine description
Can you tell/provide the .config and dts used ?
You seem to have 319MB RAM wherease arch/powerpc/boot/dts/wii.dts only
has 88MB Memory:
memory {
device_type = "memory";
reg = <0x00000000 0x01800000 /* MEM1 24MB 1T-SRAM */
0x10000000 0x04000000>; /* MEM2 64MB GDDR3 */
};
Christophe
> ...
>
> I've tested at patch 1, 2, 3, 4, and 13, so I don't know if it works
> somewhere in the middle, but probably not.
>
> (And in case you're wondering about the 22 in the version string: Those
> are mostly patches that give me a serial console.)
>
> I'm not sure what is going on, because I haven't looked closely at the
> patches or tried to debug the problem. If you have some debugging tips,
> I can try them.
>
>
> Jonathan Neuschäfer
>
next prev parent reply other threads:[~2018-12-13 12:17 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-29 19:00 [PATCH v1 00/13] powerpc/32s: Use BATs for STRICT_KERNEL_RWX Christophe Leroy
2018-11-29 19:00 ` [PATCH v1 01/13] powerpc/mm: add exec protection on powerpc 603 Christophe Leroy
2018-11-29 19:00 ` [PATCH v1 02/13] powerpc/mm/32: add base address to mmu_mapin_ram() Christophe Leroy
2018-11-29 19:00 ` [PATCH v1 03/13] powerpc/mm/32s: rework mmu_mapin_ram() Christophe Leroy
2018-12-03 21:55 ` Jonathan Neuschäfer
2018-12-13 12:16 ` Christophe Leroy [this message]
2018-12-13 14:51 ` Christophe Leroy
2018-12-17 1:28 ` Jonathan Neuschäfer
2018-12-17 9:29 ` Christophe Leroy
2018-12-18 3:05 ` Jonathan Neuschäfer
2018-12-18 9:18 ` Christophe Leroy
2018-12-18 14:07 ` Jonathan Neuschäfer
2018-12-18 14:15 ` Christophe Leroy
2018-12-18 14:55 ` Christophe Leroy
2018-12-18 15:04 ` Christophe Leroy
2018-12-18 17:04 ` Jonathan Neuschäfer
2018-12-18 18:13 ` Christophe Leroy
2018-11-29 19:00 ` [PATCH v1 04/13] powerpc/mm/32s: use generic mmu_mapin_ram() for all blocks Christophe Leroy
2018-11-29 19:00 ` [PATCH v1 05/13] powerpc/wii: remove wii_mmu_mapin_mem2() Christophe Leroy
2018-11-29 19:00 ` [PATCH v1 06/13] powerpc/mm/32s: use _PAGE_EXEC in setbat() Christophe Leroy
2018-11-29 19:00 ` [PATCH v1 07/13] powerpc/mm/32s: add setibat() clearibat() and update_bats() Christophe Leroy
2018-11-29 19:00 ` [PATCH v1 08/13] powerpc/32: add helper to write into segment registers Christophe Leroy
2018-11-29 19:00 ` [PATCH v1 09/13] powerpc/mmu: add is_strict_kernel_rwx() helper Christophe Leroy
2018-11-29 19:00 ` [PATCH v1 10/13] powerpc/kconfig: define PAGE_SHIFT inside Kconfig Christophe Leroy
2018-11-29 19:00 ` [PATCH v1 11/13] powerpc/kconfig: define CONFIG_DATA_SHIFT and CONFIG_ETEXT_SHIFT Christophe Leroy
2018-11-29 19:00 ` [PATCH v1 12/13] powerpc/mm/32s: Use BATs for STRICT_KERNEL_RWX Christophe Leroy
2018-11-29 19:00 ` [PATCH v1 13/13] powerpc/kconfig: make _etext and data areas alignment configurable on Book3s 32 Christophe Leroy
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