From c90462e691ee5bd57e57546408cbb2301fc476e5 Mon Sep 17 00:00:00 2001
From: Andrew Davis <afd@ti.com>
Date: Tue, 28 Nov 2023 11:05:27 -0600
Subject: [PATCH] arm: mach-k3: Remove non-cached memory map areas
All normal memory areas should be mapped as such.
We added these un-cached holes in our memory map to hack around the
remoteproc driver missing the proper cache maintenance operations.
The problem is having these non-cached memory map areas causes stability
issues later in system operation due to the nature of the K3 coherency
architecture. Plus these are board specific carveouts and instead
should have been added at the board level, not here in the SoC common
code area.
Remove these non-cached memory map areas.
Signed-off-by: Andrew Davis <afd@ti.com>
Reviewed-by: Nishanth Menon <nm@ti.com>
Tested-by: Nishanth Menon <nm@ti.com>
---
arch/arm/mach-k3/arm64-mmu.c | 30 +++---------------------------
1 file changed, 3 insertions(+), 27 deletions(-)
diff --git a/arch/arm/mach-k3/arm64-mmu.c b/arch/arm/mach-k3/arm64-mmu.c
index 5c858ae0f8..2c2d75d3f4 100644
--- a/arch/arm/mach-k3/arm64-mmu.c
+++ b/arch/arm/mach-k3/arm64-mmu.c
@@ -30,13 +30,7 @@ struct mm_region am654_mem_map[] = {
}, {
.virt = 0xa0000000UL,
.phys = 0xa0000000UL,
- .size = 0x02100000UL,
- .attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL_NC) |
- PTE_BLOCK_INNER_SHARE
- }, {
- .virt = 0xa2100000UL,
- .phys = 0xa2100000UL,
- .size = 0x5df00000UL,
+ .size = 0x60000000UL,
.attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
PTE_BLOCK_INNER_SHARE
}, {
@@ -81,13 +75,7 @@ struct mm_region j7200_mem_map[] = {
}, {
.virt = 0xa0000000UL,
.phys = 0xa0000000UL,
- .size = 0x04800000UL,
- .attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL_NC) |
- PTE_BLOCK_NON_SHARE
- }, {
- .virt = 0xa4800000UL,
- .phys = 0xa4800000UL,
- .size = 0x5b800000UL,
+ .size = 0x60000000UL,
.attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
PTE_BLOCK_INNER_SHARE
}, {
@@ -129,13 +117,7 @@ struct mm_region j721e_mem_map[] = {
}, {
.virt = 0xa0000000UL,
.phys = 0xa0000000UL,
- .size = 0x1bc00000UL,
- .attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL_NC) |
- PTE_BLOCK_NON_SHARE
- }, {
- .virt = 0xbbc00000UL,
- .phys = 0xbbc00000UL,
- .size = 0x44400000UL,
+ .size = 0x60000000UL,
.attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
PTE_BLOCK_INNER_SHARE
}, {
@@ -151,12 +133,6 @@ struct mm_region j721e_mem_map[] = {
.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
PTE_BLOCK_NON_SHARE |
PTE_BLOCK_PXN | PTE_BLOCK_UXN
- }, {
- .virt = 0x4d80000000UL,
- .phys = 0x4d80000000UL,
- .size = 0x0002000000UL,
- .attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL_NC) |
- PTE_BLOCK_INNER_SHARE
}, {
/* List terminator */
0,
--
2.39.5