Re: [U-Boot] [PATCH v2 24/26] armv8: K3: am65x: Update DDR address regions in MMU table

[Tom Rini]

On Wed, Sep 04, 2019 at 04:01:49PM +0530, Lokesh Vutla wrote:

> From: Suman Anna 
> 
> The A53 U-Boot code can load and boot the MCU domain R5F cores (either a
> single core in LockStep mode or 2 cores in Split mode) to achieve various
> early system functionalities. Change the memory attributes for the DDR
> regions used by the remote processors so that the cores can see and
> execute the proper code loaded by U-Boot.
> 
> These regions are currently limited to 0xa000 to 0xa210 as per
> the DDR carveouts assigned for these R5F cores in the overall DDR memory
> map.
> 
> Signed-off-by: Suman Anna 
> Signed-off-by: Lokesh Vutla 

Applied to u-boot/master, thanks!

-- 
Tom


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[U-Boot] [PATCH v2 24/26] armv8: K3: am65x: Update DDR address regions in MMU table

[Lokesh Vutla]

From: Suman Anna 

The A53 U-Boot code can load and boot the MCU domain R5F cores (either a
single core in LockStep mode or 2 cores in Split mode) to achieve various
early system functionalities. Change the memory attributes for the DDR
regions used by the remote processors so that the cores can see and
execute the proper code loaded by U-Boot.

These regions are currently limited to 0xa000 to 0xa210 as per
the DDR carveouts assigned for these R5F cores in the overall DDR memory
map.

Signed-off-by: Suman Anna 
Signed-off-by: Lokesh Vutla 
---
 arch/arm/mach-k3/arm64-mmu.c | 16 ++--
 1 file changed, 14 insertions(+), 2 deletions(-)

diff --git a/arch/arm/mach-k3/arm64-mmu.c b/arch/arm/mach-k3/arm64-mmu.c
index 82778d2197..98c5a777e5 100644
--- a/arch/arm/mach-k3/arm64-mmu.c
+++ b/arch/arm/mach-k3/arm64-mmu.c
@@ -14,7 +14,7 @@
 
 #ifdef CONFIG_SOC_K3_AM6
 /* NR_DRAM_BANKS + 32bit IO + 64bit IO + terminator */
-#define NR_MMU_REGIONS (CONFIG_NR_DRAM_BANKS + 3)
+#define NR_MMU_REGIONS (CONFIG_NR_DRAM_BANKS + 5)
 
 /* ToDo: Add 64bit IO */
 struct mm_region am654_mem_map[NR_MMU_REGIONS] = {
@@ -28,7 +28,19 @@ struct mm_region am654_mem_map[NR_MMU_REGIONS] = {
}, {
.virt = 0x8000UL,
.phys = 0x8000UL,
-   .size = 0x8000UL,
+   .size = 0x2000UL,
+   .attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
+PTE_BLOCK_INNER_SHARE
+   }, {
+   .virt = 0xa000UL,
+   .phys = 0xa000UL,
+   .size = 0x0210UL,
+   .attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL_NC) |
+PTE_BLOCK_INNER_SHARE
+   }, {
+   .virt = 0xa210UL,
+   .phys = 0xa210UL,
+   .size = 0x5df0UL,
.attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
 PTE_BLOCK_INNER_SHARE
}, {
-- 
2.22.0

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