From: Marek Vasut <marex@denx.de>
Date: Thu, 22 Dec 2022 00:46:40 +0000 (+0100)
Subject: arm: imx: imx8m: Map RAM as NS if PSCI provider
X-Git-Url: http://git.dujemihanovic.xyz/login.html?a=commitdiff_plain;h=1434f93ee016e55473031e47b84f9fe6f2e26b56;p=u-boot.git

arm: imx: imx8m: Map RAM as NS if PSCI provider

In case U-Boot is a PSCI provider, map RAM explicitly as NS,
otherwise secondary cores crash with SError when attempting
to access RAM mapped as secure in EL2.

Signed-off-by: Marek Vasut <marex@denx.de>
---

diff --git a/arch/arm/mach-imx/imx8m/soc.c b/arch/arm/mach-imx/imx8m/soc.c
index 93e10bf06f..cad9200dd1 100644
--- a/arch/arm/mach-imx/imx8m/soc.c
+++ b/arch/arm/mach-imx/imx8m/soc.c
@@ -100,6 +100,12 @@ void set_wdog_reset(struct wdog_regs *wdog)
 	setbits_le16(&wdog->wcr, WDOG_WDT_MASK | WDOG_WDZST_MASK);
 }
 
+#ifdef CONFIG_ARMV8_PSCI
+#define PTE_MAP_NS	PTE_BLOCK_NS
+#else
+#define PTE_MAP_NS	0
+#endif
+
 static struct mm_region imx8m_mem_map[] = {
 	{
 		/* ROM */
@@ -122,7 +128,7 @@ static struct mm_region imx8m_mem_map[] = {
 		.phys = 0x180000UL,
 		.size = 0x8000UL,
 		.attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
-			 PTE_BLOCK_OUTER_SHARE
+			 PTE_BLOCK_OUTER_SHARE | PTE_MAP_NS
 	}, {
 		/* TCM */
 		.virt = 0x7C0000UL,
@@ -130,14 +136,14 @@ static struct mm_region imx8m_mem_map[] = {
 		.size = 0x80000UL,
 		.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
 			 PTE_BLOCK_NON_SHARE |
-			 PTE_BLOCK_PXN | PTE_BLOCK_UXN
+			 PTE_BLOCK_PXN | PTE_BLOCK_UXN | PTE_MAP_NS
 	}, {
 		/* OCRAM */
 		.virt = 0x900000UL,
 		.phys = 0x900000UL,
 		.size = 0x200000UL,
 		.attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
-			 PTE_BLOCK_OUTER_SHARE
+			 PTE_BLOCK_OUTER_SHARE | PTE_MAP_NS
 	}, {
 		/* AIPS */
 		.virt = 0xB00000UL,
@@ -152,7 +158,7 @@ static struct mm_region imx8m_mem_map[] = {
 		.phys = 0x40000000UL,
 		.size = PHYS_SDRAM_SIZE,
 		.attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
-			 PTE_BLOCK_OUTER_SHARE
+			 PTE_BLOCK_OUTER_SHARE | PTE_MAP_NS
 #ifdef PHYS_SDRAM_2_SIZE
 	}, {
 		/* DRAM2 */
@@ -160,7 +166,7 @@ static struct mm_region imx8m_mem_map[] = {
 		.phys = 0x100000000UL,
 		.size = PHYS_SDRAM_2_SIZE,
 		.attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
-			 PTE_BLOCK_OUTER_SHARE
+			 PTE_BLOCK_OUTER_SHARE | PTE_MAP_NS
 #endif
 	}, {
 		/* empty entrie to split table entry 5 if needed when TEEs are used */