From: Sascha Hauer <s.hauer@pengutronix.de>
To: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: barebox@lists.infradead.org
Subject: Re: rework MMU support
Date: Mon, 1 Aug 2011 17:54:59 +0200 [thread overview]
Message-ID: <20110801155459.GL31404@pengutronix.de> (raw)
In-Reply-To: <20110801132643.GH6255@game.jcrosoft.org>
On Mon, Aug 01, 2011 at 03:26:43PM +0200, Jean-Christophe PLAGNIOL-VILLARD wrote:
> Hi,
>
> This series reworks the barebox MMU support. We now use second
> level page tables which allows us to remap the dma coherent area
> dynamically. We don't have to map our sdram twice anymore which
> helps us on newer systems with big memory.
>
> As a bonus there is no board specific MMU code anymore. All a board
> has to do to enable MMU support via Kconfig is to register its SDRAM banks
> at mem_initcall
>
> The following changes since commit b821d73607cc6387b1ee588af97a44e8eb2b4fe2:
>
> Merge branch 'resource' of git://uboot.jcrosoft.org/barebox into next (2011-08-01 14:10:38 +0200)
>
> are available in the git repository at:
>
> git://uboot.jcrosoft.org/barebox.git mmu
>
> Jean-Christophe PLAGNIOL-VILLARD (2):
> arm: introduce arm_add_mem_device to register dram device
> init: introduce mem, mmu and postmmu initcall
>
> Sascha Hauer (7):
> ARM cache l2x0: depend on MMU
> ARM: move armlinux_add_dram to location which is always compiled
> ARM l2x0: make init function static inline if l2 is not available
> ARM: pass size to dma_free_coherent
> ARM boards: move sdram setup before mmu setup
> ARM: rework MMU support
> ARM boards: remove now unnecessary mmu calls
merged up to 7/9. The MMU rework needs some changes to v1 which I
haven't posted yet. It does not work correctly on armv7 as these
processors need slightly different second level page table entries.
Also, I added the appropriate KEEP directives to
include/asm-generic/barebox.lds.h to make this branch work. Would be
good if you could give your patches at least *some* testing.
Sascha
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next prev parent reply other threads:[~2011-08-01 15:55 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-08-01 13:26 Jean-Christophe PLAGNIOL-VILLARD
2011-08-01 13:29 ` [PATCH 1/9 v2] arm: introduce arm_add_mem_device to register dram device Jean-Christophe PLAGNIOL-VILLARD
2011-08-01 13:29 ` [PATCH 2/9] ARM cache l2x0: depend on MMU Jean-Christophe PLAGNIOL-VILLARD
2011-08-01 13:29 ` [PATCH 3/9] ARM: move armlinux_add_dram to location which is always compiled Jean-Christophe PLAGNIOL-VILLARD
2011-08-01 13:29 ` [PATCH 4/9] ARM l2x0: make init function static inline if l2 is not available Jean-Christophe PLAGNIOL-VILLARD
2011-08-01 13:29 ` [PATCH 5/9] ARM: pass size to dma_free_coherent Jean-Christophe PLAGNIOL-VILLARD
2011-08-01 13:29 ` [PATCH 6/9] init: introduce mem, mmu and postmmu initcall Jean-Christophe PLAGNIOL-VILLARD
2011-08-01 13:29 ` [PATCH 7/9 v2] ARM boards: move sdram setup before mmu setup Jean-Christophe PLAGNIOL-VILLARD
2011-08-01 13:29 ` [PATCH 8/9] ARM: rework MMU support Jean-Christophe PLAGNIOL-VILLARD
2011-08-01 13:29 ` [PATCH 9/9 v2] ARM boards: remove now unnecessary mmu calls Jean-Christophe PLAGNIOL-VILLARD
2011-08-01 15:54 ` Sascha Hauer [this message]
2011-08-01 16:12 ` rework MMU support Jean-Christophe PLAGNIOL-VILLARD
2011-08-01 16:32 ` Jean-Christophe PLAGNIOL-VILLARD
-- strict thread matches above, loose matches on Subject: below --
2011-07-29 9:43 Sascha Hauer
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