Re: [U-Boot] [PATCH] armv8: fsl-layerscape: Fix final MMU table for QSPI and IFC

[York Sun]

On 08/29/2017 06:42 AM, Suresh Gupta wrote:
> For QSPI and IFC addresses execution shouldn't be allowed
> when u-boot running from DDR. Revise the MMU final table
> to enforce execute-never bits.
> 
> Signed-off-by: Suresh Gupta 
> ---

Applied to fsl-qoriq master. Thanks.

York

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[U-Boot] [PATCH] armv8: fsl-layerscape: Fix final MMU table for QSPI and IFC

[Suresh Gupta]

For QSPI and IFC addresses execution shouldn't be allowed
when u-boot running from DDR. Revise the MMU final table
to enforce execute-never bits.

Signed-off-by: Suresh Gupta 
---
 arch/arm/include/asm/arch-fsl-layerscape/cpu.h | 6 --
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/arch/arm/include/asm/arch-fsl-layerscape/cpu.h 
b/arch/arm/include/asm/arch-fsl-layerscape/cpu.h
index c4e5ecc..3d564d6 100644
--- a/arch/arm/include/asm/arch-fsl-layerscape/cpu.h
+++ b/arch/arm/include/asm/arch-fsl-layerscape/cpu.h
@@ -199,7 +199,8 @@ static struct mm_region final_map[] = {
},
{ CONFIG_SYS_FSL_QSPI_BASE1, CONFIG_SYS_FSL_QSPI_BASE1,
  CONFIG_SYS_FSL_QSPI_SIZE1,
- PTE_BLOCK_MEMTYPE(MT_NORMAL) | PTE_BLOCK_NON_SHARE
+ PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
+ PTE_BLOCK_NON_SHARE | PTE_BLOCK_PXN | PTE_BLOCK_UXN
},
{ CONFIG_SYS_FSL_QSPI_BASE2, CONFIG_SYS_FSL_QSPI_BASE2,
  CONFIG_SYS_FSL_QSPI_SIZE2,
@@ -208,7 +209,8 @@ static struct mm_region final_map[] = {
},
{ CONFIG_SYS_FSL_IFC_BASE2, CONFIG_SYS_FSL_IFC_BASE2,
  CONFIG_SYS_FSL_IFC_SIZE2,
- PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) | PTE_BLOCK_NON_SHARE
+ PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
+ PTE_BLOCK_NON_SHARE | PTE_BLOCK_PXN | PTE_BLOCK_UXN
},
{ CONFIG_SYS_FSL_DCSR_BASE, CONFIG_SYS_FSL_DCSR_BASE,
  CONFIG_SYS_FSL_DCSR_SIZE,
-- 
1.9.3

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