From: Ahmad Fatoum <a.fatoum@pengutronix.de>
To: barebox@lists.infradead.org
Cc: uol@pengutronix.de, Ahmad Fatoum <a.fatoum@pengutronix.de>
Subject: [PATCH v2 07/10] ARM: mmu: define attrs_uncached_mem() helper
Date: Wed, 17 Aug 2022 13:42:41 +0200 [thread overview]
Message-ID: <20220817114244.1810531-8-a.fatoum@pengutronix.de> (raw)
In-Reply-To: <20220817114244.1810531-1-a.fatoum@pengutronix.de>
We already have a helper with the same name for ARMv8, so define it here
for reuse in the follow-up commit.
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
---
arch/arm/cpu/mmu.h | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/arch/arm/cpu/mmu.h b/arch/arm/cpu/mmu.h
index d48522d166f7..1499b70dd649 100644
--- a/arch/arm/cpu/mmu.h
+++ b/arch/arm/cpu/mmu.h
@@ -73,15 +73,20 @@ create_sections(uint32_t *ttb, unsigned long first,
#define PMD_SECT_DEF_UNCACHED (PMD_SECT_AP_WRITE | PMD_SECT_AP_READ | PMD_TYPE_SECT)
#define PMD_SECT_DEF_CACHED (PMD_SECT_WB | PMD_SECT_DEF_UNCACHED)
-static inline void create_flat_mapping(uint32_t *ttb)
+static inline unsigned long attrs_uncached_mem(void)
{
unsigned int flags = PMD_SECT_DEF_UNCACHED;
if (cpu_architecture() >= CPU_ARCH_ARMv7)
flags |= PMD_SECT_XN;
+ return flags;
+}
+
+static inline void create_flat_mapping(uint32_t *ttb)
+{
/* create a flat mapping using 1MiB sections */
- create_sections(ttb, 0, 0xffffffff, flags);
+ create_sections(ttb, 0, 0xffffffff, attrs_uncached_mem());
}
#endif /* __ARM_MMU_H */
--
2.30.2
next prev parent reply other threads:[~2022-08-17 11:44 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-17 11:42 [PATCH v2 00/10] ARM: mmu: inhibit speculation into secure memory Ahmad Fatoum
2022-08-17 11:42 ` [PATCH v2 01/10] resource: add flags parameter to __request_region Ahmad Fatoum
2022-08-17 11:42 ` [PATCH v2 02/10] common: allow requesting SDRAM regions with custom flags Ahmad Fatoum
2022-08-17 11:42 ` [PATCH v2 03/10] memory: define reserve_sdram_region helper Ahmad Fatoum
2022-08-17 11:42 ` [PATCH v2 04/10] init: define new postmem_initcall() Ahmad Fatoum
2022-08-17 11:42 ` [PATCH v2 05/10] of: reserved-mem: reserve regions prior to mmu_initcall() Ahmad Fatoum
2022-08-17 11:42 ` [PATCH v2 06/10] ARM: mmu64: map reserved regions uncached Ahmad Fatoum
2022-08-17 11:42 ` Ahmad Fatoum [this message]
2022-08-17 11:42 ` [PATCH v2 08/10] ARM: mmu: use reserve mem entries to modify maps Ahmad Fatoum
2022-09-12 12:01 ` Sascha Hauer
2022-09-12 15:15 ` Ahmad Fatoum
2022-09-12 16:36 ` Sascha Hauer
2022-08-17 11:42 ` [PATCH v2 09/10] ARM: early-mmu: don't cache/prefetch OPTEE_SIZE bytes from end of memory Ahmad Fatoum
2022-08-17 11:42 ` [PATCH v2 10/10] commands: iomem: point out [R]eserved regions Ahmad Fatoum
2022-08-18 12:39 ` [PATCH v2 00/10] ARM: mmu: inhibit speculation into secure memory Sascha Hauer
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