arm64: s/ARCH_BOOT_EL3/ARCH_ARM64_EXCEPTION_LEVEL/g

Search and replace ARCH_BOOT_EL3 with more generic ARCH_ARM64_EXCEPTION_LEVEL that holds the EL level in an integer variable. Signed-off-by: Eero Nurkkala <[email protected]>
eenurkka · May 17, 2024 · 75a3876 · 75a3876
1 parent a3bcab6
commit 75a3876
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Showing 12 changed files with 21 additions and 22 deletions.
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
@@ -146,14 +146,13 @@ config ARCH_HAVE_EL3
 		runing at EL3 is not necessary and system register for EL3
 		is not accessible
 
-config ARCH_BOOT_EL3
-	bool "Boot in EL3"
-	default n
-	depends on ARCH_HAVE_EL3
+config ARCH_ARM64_EXCEPTION_LEVEL
+	int "Exception level to operate"
+	default 1
 	---help---
-		If NuttX works as the primary bootloader, give option to
-		stay in EL3. This will prevent it to switching into EL2/EL1
-		levels.
+		Default exception level is EL1 for the NuttX OS. However,
+		if NuttX works as the primary bootloader, this may be set
+		to EL3. Other levels are not supported at the moment.
 
 config ARCH_SET_VMPIDR_EL2
 	bool "Set VMPIDR_EL2 at EL2 stage"

diff --git a/arch/arm64/src/common/arm64_boot.c b/arch/arm64/src/common/arm64_boot.c
@@ -78,7 +78,7 @@ void arm64_boot_el3_init(void)
   reg = 0U;               /* Reset */
   reg |= SCR_NS_BIT;      /* EL2 / EL3 non-secure */
   reg |= (SCR_RES1 |      /* RES1 */
-  #ifdef CONFIG_ARCH_BOOT_EL3
+#if (CONFIG_ARCH_ARM64_EXCEPTION_LEVEL == 3)
           SCR_IRQ_BIT |   /* Route IRQs to EL3 */
           SCR_FIQ_BIT |   /* Route FIQs to EL3 */
           SCR_EA_BIT |    /* Route EAs to EL3 */

diff --git a/arch/arm64/src/common/arm64_fork.c b/arch/arm64/src/common/arm64_fork.c
@@ -225,7 +225,7 @@ pid_t arm64_fork(const struct fork_s *context)
   pforkctx->regs[REG_X28]  = context->regs[FORK_REG_X28];
   pforkctx->regs[REG_X29]  = newfp;
 
-#ifdef CONFIG_ARCH_BOOT_EL3
+#if (CONFIG_ARCH_ARM64_EXCEPTION_LEVEL == 3)
   pforkctx->spsr = SPSR_MODE_EL3H;
 #else
   pforkctx->spsr = SPSR_MODE_EL1H;

diff --git a/arch/arm64/src/common/arm64_gicv3.c b/arch/arm64/src/common/arm64_gicv3.c
@@ -792,7 +792,7 @@ uint64_t * arm64_decodefiq(uint64_t * regs)
 
   irq = arm64_gic_get_active_fiq();
 
-#ifdef CONFIG_ARCH_BOOT_EL3
+#if (CONFIG_ARCH_ARM64_EXCEPTION_LEVEL == 3)
   /* FIQ is group0 interrupt */
 
   if (irq == PENDING_GRP1NS_INTID)

diff --git a/arch/arm64/src/common/arm64_head.S b/arch/arm64/src/common/arm64_head.S
@@ -235,7 +235,7 @@ switch_el:
 
     bl    arm64_boot_el3_init
 
-#ifdef CONFIG_ARCH_BOOT_EL3
+#if (CONFIG_ARCH_ARM64_EXCEPTION_LEVEL == 3)
     msr   SPSel, #1
 
     /* Set SP_EL3 (with SPSel = 1) */

diff --git a/arch/arm64/src/common/arm64_initialstate.c b/arch/arm64/src/common/arm64_initialstate.c
@@ -76,7 +76,7 @@ void arm64_new_task(struct tcb_s * tcb)
 
   /* Keep using SP_EL1 or SP_EL3 */
 
-#ifdef CONFIG_ARCH_BOOT_EL3
+#if (CONFIG_ARCH_ARM64_EXCEPTION_LEVEL == 3)
   pinitctx->spsr      = SPSR_MODE_EL3H;
 #else
   pinitctx->spsr      = SPSR_MODE_EL1H;

diff --git a/arch/arm64/src/common/arm64_mmu.c b/arch/arm64/src/common/arm64_mmu.c
@@ -523,7 +523,7 @@ static void setup_page_tables(void)
     }
 }
 
-#ifdef CONFIG_ARCH_BOOT_EL3
+#if (CONFIG_ARCH_ARM64_EXCEPTION_LEVEL == 3)
 static void enable_mmu_el3(unsigned int flags)
 {
   uint64_t value;
@@ -630,7 +630,7 @@ int arm64_mmu_init(bool is_primary_core)
 
   __asm__ volatile ("mrs %0, CurrentEL" : "=r" (el));
 
-#ifdef CONFIG_ARCH_BOOT_EL3
+#if (CONFIG_ARCH_ARM64_EXCEPTION_LEVEL == 3)
   __MMU_ASSERT(GET_EL(el) == MODE_EL3,
                "Exception level not EL3, MMU not enabled!\n");
 
@@ -665,7 +665,7 @@ int arm64_mmu_init(bool is_primary_core)
 
   /* Currently EL1 and EL3 are supported */
 
-#ifdef CONFIG_ARCH_BOOT_EL3
+#if (CONFIG_ARCH_ARM64_EXCEPTION_LEVEL == 3)
   enable_mmu_el3(flags);
 #else
   enable_mmu_el1(flags);

diff --git a/arch/arm64/src/common/arm64_schedulesigaction.c b/arch/arm64/src/common/arm64_schedulesigaction.c
@@ -74,7 +74,7 @@ void arm64_init_signal_process(struct tcb_s *tcb, struct regs_context *regs)
 
   /* Keep using SP_EL1 */
 
-#ifdef CONFIG_ARCH_BOOT_EL3
+#if (CONFIG_ARCH_ARM64_EXCEPTION_LEVEL == 3)
   psigctx->spsr      = SPSR_MODE_EL3H | DAIF_FIQ_BIT | DAIF_IRQ_BIT;
 #else
   psigctx->spsr      = SPSR_MODE_EL1H | DAIF_FIQ_BIT | DAIF_IRQ_BIT;

diff --git a/arch/arm64/src/common/arm64_vector_table.S b/arch/arm64/src/common/arm64_vector_table.S
@@ -69,7 +69,7 @@
     stp    x30, \xreg0,  [sp, #8 * REG_X30]
 
     /* ELR and SPSR */
-#ifdef CONFIG_ARCH_BOOT_EL3
+#if (CONFIG_ARCH_ARM64_EXCEPTION_LEVEL == 3)
     mrs    \xreg0, elr_el3
     mrs    \xreg1, spsr_el3
 #else
@@ -251,7 +251,7 @@ arm64_exit_exc_fpu_done:
     /* restore spsr and elr at el1*/
 
     ldp    x0, x1,   [sp, #8 * REG_ELR]
-#ifdef CONFIG_ARCH_BOOT_EL3
+#if (CONFIG_ARCH_ARM64_EXCEPTION_LEVEL == 3)
     msr    elr_el3,   x0
     msr    spsr_el3,  x1
 #else

diff --git a/arch/arm64/src/common/arm64_vectors.S b/arch/arm64/src/common/arm64_vectors.S
@@ -92,7 +92,7 @@ SECTION_FUNC(text, up_saveusercontext)
     stp    x30, x4,  [x0, #8 * REG_X30]
 
     /* ELR and SPSR */
-#ifdef CONFIG_ARCH_BOOT_EL3
+#if (CONFIG_ARCH_ARM64_EXCEPTION_LEVEL == 3)
     mrs    x4,  elr_el3
     mrs    x5,  spsr_el3
 #else
@@ -186,7 +186,7 @@ GTEXT(arm64_sync_exc)
 SECTION_FUNC(text, arm64_sync_exc)
     /* checking the EC value to see which exception need to be handle */
 
-#ifdef CONFIG_ARCH_BOOT_EL3
+#if (CONFIG_ARCH_ARM64_EXCEPTION_LEVEL == 3)
     mrs    x0, esr_el3
 #else
     mrs    x0, esr_el1

diff --git a/arch/arm64/src/imx9/Kconfig b/arch/arm64/src/imx9/Kconfig
@@ -16,7 +16,7 @@ config ARCH_CHIP_IMX93
 	select ARCH_HAVE_MULTICPU
 	select ARMV8A_HAVE_GICv3
 	select ARCH_CORTEX_A55
-	select ARCH_HAVE_PSCI if !ARCH_BOOT_EL3
+	select ARCH_HAVE_PSCI if !IMX9_BOOTLOADER
 	select ARCH_HAVE_PWM_MULTICHAN
 	select ARCH_HAVE_RESET
 

diff --git a/boards/arm64/imx9/imx93-evk/configs/bootloader/defconfig b/boards/arm64/imx9/imx93-evk/configs/bootloader/defconfig
@@ -8,9 +8,9 @@
 # CONFIG_STANDARD_SERIAL is not set
 CONFIG_ARCH="arm64"
 CONFIG_ARCH_ARM64=y
+CONFIG_ARCH_ARM64_EXCEPTION_LEVEL=3
 CONFIG_ARCH_BOARD="imx93-evk"
 CONFIG_ARCH_BOARD_IMX93_EVK=y
-CONFIG_ARCH_BOOT_EL3=y
 CONFIG_ARCH_CHIP="imx9"
 CONFIG_ARCH_CHIP_IMX93=y
 CONFIG_ARCH_CHIP_IMX9=y