From: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
To: barebox@lists.infradead.org
Subject: [PATCH 30/36] ARM mmu: pickup already enabled mmu
Date: Sun, 3 Feb 2013 16:10:30 +0100 [thread overview]
Message-ID: <1359904236-11622-30-git-send-email-plagnioj@jcrosoft.com> (raw)
In-Reply-To: <1359904236-11622-1-git-send-email-plagnioj@jcrosoft.com>
From: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
arch/arm/cpu/mmu.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/arch/arm/cpu/mmu.c b/arch/arm/cpu/mmu.c
index 8f9a43e..73dd0d3 100644
--- a/arch/arm/cpu/mmu.c
+++ b/arch/arm/cpu/mmu.c
@@ -276,7 +276,14 @@ static int mmu_init(void)
pte_flags_uncached = PTE_FLAGS_UNCACHED_V4;
}
- ttb = memalign(0x10000, 0x4000);
+ if (get_cr() & CR_M) {
+ asm volatile ("mrc p15,0,%0,c2,c0,0" : "=r"(ttb));
+
+ if (!request_sdram_region("ttb", (unsigned long)ttb, SZ_16K))
+ pr_err("Error: Can't request SDRAM region for ttb\n");
+ } else {
+ ttb = memalign(0x10000, 0x4000);
+ }
pr_debug("ttb: 0x%p\n", ttb);
--
1.7.10.4
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next prev parent reply other threads:[~2013-02-03 15:14 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-03 15:03 [PATCH v3] Add new ARM entry point for barebox Jean-Christophe PLAGNIOL-VILLARD
2013-02-03 15:10 ` [PATCH 01/36] ARM: Add new " Jean-Christophe PLAGNIOL-VILLARD
2013-02-03 15:10 ` [PATCH 02/36] ARM: add __noreturn to board_init_lowlevel_return Jean-Christophe PLAGNIOL-VILLARD
2013-02-03 15:10 ` [PATCH 03/36] ARM i.MX: Use SRAM stack in lowlevel code Jean-Christophe PLAGNIOL-VILLARD
2013-02-03 15:10 ` [PATCH 04/36] ARM i.MX: Add i.MX specific entry point for barebox Jean-Christophe PLAGNIOL-VILLARD
2013-02-03 15:10 ` [PATCH 05/36] ARM i.MX: prepare external nand boot for SoC specific entry Jean-Christophe PLAGNIOL-VILLARD
2013-02-03 15:10 ` [PATCH 06/36] ARM i.MX boards: switch to barebox_arm_entry Jean-Christophe PLAGNIOL-VILLARD
2013-02-03 15:10 ` [PATCH 07/36] ARM MXS " Jean-Christophe PLAGNIOL-VILLARD
2013-02-03 15:10 ` [PATCH 08/36] ARM OMAP " Jean-Christophe PLAGNIOL-VILLARD
2013-02-03 15:10 ` [PATCH 09/36] ARM Samsung " Jean-Christophe PLAGNIOL-VILLARD
2013-02-03 15:10 ` [PATCH 10/36] ARM PXA " Jean-Christophe PLAGNIOL-VILLARD
2013-02-03 15:10 ` [PATCH 11/36] ARM ep93xx " Jean-Christophe PLAGNIOL-VILLARD
2013-02-03 15:10 ` [PATCH 12/36] ARM tegra " Jean-Christophe PLAGNIOL-VILLARD
2013-02-03 15:10 ` [PATCH 13/36] ARM nomadik " Jean-Christophe PLAGNIOL-VILLARD
2013-02-03 15:10 ` [PATCH 14/36] ARM versatile " Jean-Christophe PLAGNIOL-VILLARD
2013-02-03 15:10 ` [PATCH 15/36] ARM netx " Jean-Christophe PLAGNIOL-VILLARD
2013-02-03 15:10 ` [PATCH 16/36] ARM clep7212: " Jean-Christophe PLAGNIOL-VILLARD
2013-02-03 15:10 ` [PATCH 17/36] ARM raspberrypi: " Jean-Christophe PLAGNIOL-VILLARD
2013-02-03 15:10 ` [PATCH 18/36] ARM AT91: switch at91sam9 to barebox_arm_entry part1 Jean-Christophe PLAGNIOL-VILLARD
2013-02-03 15:10 ` [PATCH 19/36] ARM AT91: switch at91rm9200 board to barebox_arm_entry Jean-Christophe PLAGNIOL-VILLARD
2013-02-03 15:10 ` [PATCH 20/36] ARM AT91: switch at91sam9g45 " Jean-Christophe PLAGNIOL-VILLARD
2013-02-03 15:10 ` [PATCH 21/36] ARM AT91: switch at91sam9x5 " Jean-Christophe PLAGNIOL-VILLARD
2013-02-03 15:10 ` [PATCH 22/36] ARM AT91: switch at91sam9n12 " Jean-Christophe PLAGNIOL-VILLARD
2013-02-03 15:10 ` [PATCH 23/36] ARM AT91: switch sama5d3 " Jean-Christophe PLAGNIOL-VILLARD
2013-02-03 15:10 ` [PATCH 24/36] ARM: remove now unused MACH_[HAS|DO]_LOWLEVEL_INIT Jean-Christophe PLAGNIOL-VILLARD
2013-02-03 15:10 ` [PATCH 25/36] ARM start-pbl: make board_init_lowlevel_return static Jean-Christophe PLAGNIOL-VILLARD
2013-02-03 15:10 ` [PATCH 26/36] ARM start-pbl: call uncompressed binary with arguments Jean-Christophe PLAGNIOL-VILLARD
2013-02-03 15:10 ` [PATCH 27/36] ARM start: pickup parameters from pbl Jean-Christophe PLAGNIOL-VILLARD
2013-02-03 15:10 ` [PATCH 28/36] ARM: Setup stack at end of SDRAM Jean-Christophe PLAGNIOL-VILLARD
2013-02-03 15:10 ` [PATCH 29/36] ARM pbl: Use dynamic parameters for early malloc space Jean-Christophe PLAGNIOL-VILLARD
2013-02-03 15:10 ` Jean-Christophe PLAGNIOL-VILLARD [this message]
2013-02-03 15:10 ` [PATCH 31/36] ARM: Factor out early mmu code Jean-Christophe PLAGNIOL-VILLARD
2013-02-03 15:10 ` [PATCH 32/36] ARM: Enable mmu early Jean-Christophe PLAGNIOL-VILLARD
2013-02-03 15:10 ` [PATCH 33/36] ARM: Automatically determine malloc size Jean-Christophe PLAGNIOL-VILLARD
2013-02-03 15:10 ` [PATCH 34/36] generic memory layout: fix deps for [MALLOC|STACK]_BASE Jean-Christophe PLAGNIOL-VILLARD
2013-02-03 15:10 ` [PATCH 35/36] ARM: disable HAVE_CONFIGURABLE_MEMORY_LAYOUT Jean-Christophe PLAGNIOL-VILLARD
2013-02-03 15:10 ` [PATCH 36/36] ARM pbl: inline decompress function Jean-Christophe PLAGNIOL-VILLARD
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