mail archive of the barebox mailing list
 help / color / mirror / Atom feed
From: Andrey Smirnov <andrew.smirnov@gmail.com>
To: barebox@lists.infradead.org
Cc: Andrey Smirnov <andrew.smirnov@gmail.com>
Subject: [PATCH v2 04/28] ARM: mmu: Introduce set_ttbr()
Date: Wed, 16 May 2018 13:00:12 -0700	[thread overview]
Message-ID: <20180516200036.29829-5-andrew.smirnov@gmail.com> (raw)
In-Reply-To: <20180516200036.29829-1-andrew.smirnov@gmail.com>

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
---
 arch/arm/cpu/mmu-early.c | 3 +--
 arch/arm/cpu/mmu.c       | 3 +--
 arch/arm/cpu/mmu.h       | 5 +++++
 3 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/arch/arm/cpu/mmu-early.c b/arch/arm/cpu/mmu-early.c
index fc14d5cac..79fc3080a 100644
--- a/arch/arm/cpu/mmu-early.c
+++ b/arch/arm/cpu/mmu-early.c
@@ -39,8 +39,7 @@ void mmu_early_enable(unsigned long membase, unsigned long memsize,
 
 	arm_set_cache_functions();
 
-	/* Set the ttb register */
-	asm volatile ("mcr  p15,0,%0,c2,c0,0" : : "r"(ttb) /*:*/);
+	set_ttbr(ttb);
 
 	/* Set the Domain Access Control Register */
 	i = 0x3;
diff --git a/arch/arm/cpu/mmu.c b/arch/arm/cpu/mmu.c
index c70e9e782..28732b795 100644
--- a/arch/arm/cpu/mmu.c
+++ b/arch/arm/cpu/mmu.c
@@ -471,8 +471,7 @@ static int mmu_init(void)
 
 	pr_debug("ttb: 0x%p\n", ttb);
 
-	/* Set the ttb register */
-	asm volatile ("mcr  p15,0,%0,c2,c0,0" : : "r"(ttb) /*:*/);
+	set_ttbr(ttb);
 
 	/* Set the Domain Access Control Register */
 	i = 0x3;
diff --git a/arch/arm/cpu/mmu.h b/arch/arm/cpu/mmu.h
index 79ebc80d7..5dcf4b53a 100644
--- a/arch/arm/cpu/mmu.h
+++ b/arch/arm/cpu/mmu.h
@@ -11,4 +11,9 @@ static inline void __mmu_cache_off(void) {}
 static inline void __mmu_cache_flush(void) {}
 #endif
 
+static inline void set_ttbr(void *ttb)
+{
+	asm volatile ("mcr  p15,0,%0,c2,c0,0" : : "r"(ttb) /*:*/);
+}
+
 #endif /* __ARM_MMU_H */
-- 
2.17.0


_______________________________________________
barebox mailing list
barebox@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/barebox

  parent reply	other threads:[~2018-05-16 20:01 UTC|newest]

Thread overview: 38+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-16 20:00 [PATCH v2 00/28] ARM MMU code improvements and on-demand PTE allocation Andrey Smirnov
2018-05-16 20:00 ` [PATCH v2 01/28] ARM: mmu: Remove unused ARM_VECTORS_SIZE Andrey Smirnov
2018-05-16 20:00 ` [PATCH v2 02/28] ARM: mmu: Make use of IS_ALIGNED in arm_mmu_remap_sdram() Andrey Smirnov
2018-05-16 20:00 ` [PATCH v2 03/28] ARM: mmu: Use ALIGN and ALIGN_DOWN in map_cachable() Andrey Smirnov
2018-05-16 20:00 ` Andrey Smirnov [this message]
2018-05-16 20:00 ` [PATCH v2 05/28] ARM: mmu: Introduce set_domain() Andrey Smirnov
2018-05-16 20:00 ` [PATCH v2 06/28] ARM: mmu: Share code for create_sections() Andrey Smirnov
2018-05-16 20:49   ` Sam Ravnborg
2018-05-17  0:10     ` Andrey Smirnov
2018-05-16 20:00 ` [PATCH v2 07/28] ARM: mmu: Separate index and address in create_sections() Andrey Smirnov
2018-05-16 20:52   ` Sam Ravnborg
2018-05-17  0:11     ` Andrey Smirnov
2018-05-16 20:00 ` [PATCH v2 08/28] sizes.h: Sync with Linux 4.16 Andrey Smirnov
2018-05-16 20:00 ` [PATCH v2 09/28] ARM: mmu: Specify size in bytes in create_sections() Andrey Smirnov
2018-05-17  6:55   ` Sascha Hauer
2018-05-17  7:01     ` Andrey Smirnov
2018-05-17  7:08       ` Sascha Hauer
2018-05-17  7:35         ` Andrey Smirnov
2018-05-17  9:24           ` Sascha Hauer
2018-05-16 20:00 ` [PATCH v2 10/28] ARM: mmu: Share code for initial flat mapping creation Andrey Smirnov
2018-05-16 20:00 ` [PATCH v2 11/28] ARM: mmu: Share PMD_SECT_DEF_CACHED Andrey Smirnov
2018-05-16 20:00 ` [PATCH v2 12/28] ARM: mmu: Drop needless shifting in map_io_sections() Andrey Smirnov
2018-05-16 20:00 ` [PATCH v2 13/28] ARM: mmu: Replace hardcoded shifts with pgd_index() from Linux Andrey Smirnov
2018-05-16 20:00 ` [PATCH v2 14/28] ARM: mmu: Trivial simplification in arm_mmu_remap_sdram() Andrey Smirnov
2018-05-16 20:00 ` [PATCH v2 15/28] ARM: mmu: Replace various SZ_1M with PGDIR_SIZE Andrey Smirnov
2018-05-16 20:00 ` [PATCH v2 16/28] ARM: mmu: Use PAGE_SIZE when specifying size of one page Andrey Smirnov
2018-05-16 20:00 ` [PATCH v2 17/28] ARM: mmu: Define and use PTRS_PER_PTE Andrey Smirnov
2018-05-16 20:00 ` [PATCH v2 18/28] ARM: mmu: Use PAGE_SIZE instead of magic right shift by 12 Andrey Smirnov
2018-05-16 20:00 ` [PATCH v2 19/28] ARM: mmu: Use xmemalign in arm_create_pte() Andrey Smirnov
2018-05-16 20:00 ` [PATCH v2 20/28] ARM: mmu: Use xmemalign in mmu_init() Andrey Smirnov
2018-05-16 20:00 ` [PATCH v2 21/28] ARM: mmu: Share code between dma_alloc_*() functions Andrey Smirnov
2018-05-16 20:00 ` [PATCH v2 22/28] ARM: mmu: Pass PTE flags a parameter to arm_create_pte() Andrey Smirnov
2018-05-16 20:00 ` [PATCH v2 23/28] ARM: mmu: Make sure that address is 1M aligned in arm_create_pte() Andrey Smirnov
2018-05-16 20:00 ` [PATCH v2 24/28] ARM: mmu: Use find_pte() to find PTE in create_vector_table() Andrey Smirnov
2018-05-16 20:00 ` [PATCH v2 25/28] ARM: mmu: Use dma_inv_range() in dma_sync_single_for_cpu() Andrey Smirnov
2018-05-16 20:00 ` [PATCH v2 26/28] ARM: mmu: Simplify the use of dma_flush_range() Andrey Smirnov
2018-05-16 20:00 ` [PATCH v2 27/28] ARM: mmu: Implement on-demand PTE allocation Andrey Smirnov
2018-05-16 20:00 ` [PATCH v2 28/28] ARM: mmu: Introduce ARM_TTB_SIZE Andrey Smirnov

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20180516200036.29829-5-andrew.smirnov@gmail.com \
    --to=andrew.smirnov@gmail.com \
    --cc=barebox@lists.infradead.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox