From: Marek Vasut <marex@denx.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH v4] nios2: convert dma_alloc_coherent to use malloc_cache_aligned
Date: Sat, 17 Oct 2015 13:52:40 +0200 [thread overview]
Message-ID: <201510171352.40488.marex@denx.de> (raw)
In-Reply-To: <5621B97A.5070107@wytron.com.tw>
On Saturday, October 17, 2015 at 04:59:06 AM, Thomas Chou wrote:
> On 10/17/2015 06:56 AM, Marek Vasut wrote:
> >> But nios2 cpu with 4 bytes
> >> dcache line size does not support this instruction. So we don't
> >> implement the invalidate_dcache_range/all() in u-boot yet.
> >
> > Where did you find this information ?
>
> Please find it on the foot note of table 7, page 8 of "Nios II Core
> Implementation Detail" manual,
>
> The 4-byte line data cache implementation substitutes the flushd
> instruction for the flushda
> instruction and triggers an unimplemented instruction exception for the
> initda instruction. The
> 16-byte and 32-byte line data cache implementations fully support the
> flushda and initda
> instructions.
I see, thank you for looking it up for me. This inconsistency is sad :-(
Best regards,
Marek Vasut
next prev parent reply other threads:[~2015-10-17 11:52 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-05 2:57 [U-Boot] [PATCH] nios2: convert dma mapping to use dm cpu data Thomas Chou
2015-10-06 6:49 ` [U-Boot] [PATCH v2] nios2: convert dma_alloc_coherent to use memalign Thomas Chou
2015-10-08 21:43 ` Marek Vasut
2015-10-09 8:48 ` Thomas Chou
2015-10-09 11:35 ` Thomas Chou
2015-10-09 11:31 ` [U-Boot] [PATCH v3] " Thomas Chou
2015-10-09 14:49 ` Marek Vasut
2015-10-10 5:33 ` Thomas Chou
2015-10-10 18:19 ` Marek Vasut
2015-10-11 1:48 ` Thomas Chou
2015-10-11 12:15 ` Marek Vasut
2015-10-12 5:29 ` [U-Boot] [PATCH v4] nios2: convert dma_alloc_coherent to use malloc_cache_aligned Thomas Chou
2015-10-12 10:32 ` Marek Vasut
2015-10-12 12:55 ` Thomas Chou
2015-10-12 13:46 ` Marek Vasut
2015-10-13 0:17 ` Thomas Chou
2015-10-14 1:48 ` Thomas Chou
2015-10-16 22:53 ` Marek Vasut
2015-10-16 22:56 ` Marek Vasut
2015-10-17 2:59 ` Thomas Chou
2015-10-17 11:52 ` Marek Vasut [this message]
2015-10-19 5:52 ` Albert ARIBAUD
2015-10-19 8:18 ` Thomas Chou
2015-10-19 8:27 ` Albert ARIBAUD
2015-10-14 1:42 ` [U-Boot] [PATCH v5] " Thomas Chou
2015-10-16 8:29 ` [U-Boot] [PATCH v6] " Thomas Chou
2015-10-16 22:58 ` Marek Vasut
2015-10-18 23:46 ` Thomas Chou
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