Merging upstream version 6.7.7.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 23 insertions, 27 deletions

diff --git a/arch/riscv/kernel/head.S b/arch/riscv/kernel/head.S
index 3710ea5d1..663881785 100644
--- a/arch/riscv/kernel/head.S
+++ b/arch/riscv/kernel/head.S
@@ -14,11 +14,12 @@
 #include <asm/cpu_ops_sbi.h>
 #include <asm/hwcap.h>
 #include <asm/image.h>
+#include <asm/scs.h>
 #include <asm/xip_fixup.h>
 #include "efi-header.S"
 
 __HEAD
-ENTRY(_start)
+SYM_CODE_START(_start)
 	/*
 	 * Image header expected by Linux boot-loaders. The image header data
 	 * structure is described in asm/image.h.
@@ -88,6 +89,7 @@ relocate_enable_mmu:
 	/* Compute satp for kernel page tables, but don't load it yet */
 	srl a2, a0, PAGE_SHIFT
 	la a1, satp_mode
+	XIP_FIXUP_OFFSET a1
 	REG_L a1, 0(a1)
 	or a2, a2, a1
 
@@ -110,10 +112,7 @@ relocate_enable_mmu:
 	csrw CSR_TVEC, a0
 
 	/* Reload the global pointer */
-.option push
-.option norelax
-	la gp, __global_pointer$
-.option pop
+	load_global_pointer
 
 	/*
 	 * Switch to kernel page tables.  A full fence is necessary in order to
@@ -134,10 +133,7 @@ secondary_start_sbi:
 	csrw CSR_IP, zero
 
 	/* Load the global pointer */
-	.option push
-	.option norelax
-		la gp, __global_pointer$
-	.option pop
+	load_global_pointer
 
 	/*
 	 * Disable FPU & VECTOR to detect illegal usage of
@@ -168,12 +164,13 @@ secondary_start_sbi:
 	XIP_FIXUP_OFFSET a0
 	call relocate_enable_mmu
 #endif
-	call setup_trap_vector
+	call .Lsetup_trap_vector
+	scs_load_current
 	tail smp_callin
 #endif /* CONFIG_SMP */
 
 .align 2
-setup_trap_vector:
+.Lsetup_trap_vector:
 	/* Set trap vector to exception handler */
 	la a0, handle_exception
 	csrw CSR_TVEC, a0
@@ -191,9 +188,9 @@ setup_trap_vector:
 	wfi
 	j .Lsecondary_park
 
-END(_start)
+SYM_CODE_END(_start)
 
-ENTRY(_start_kernel)
+SYM_CODE_START(_start_kernel)
 	/* Mask all interrupts */
 	csrw CSR_IE, zero
 	csrw CSR_IP, zero
@@ -210,7 +207,7 @@ ENTRY(_start_kernel)
 	 * not implement PMPs, so we set up a quick trap handler to just skip
 	 * touching the PMPs on any trap.
 	 */
-	la a0, pmp_done
+	la a0, .Lpmp_done
 	csrw CSR_TVEC, a0
 
 	li a0, -1
@@ -218,7 +215,7 @@ ENTRY(_start_kernel)
 	li a0, (PMP_A_NAPOT | PMP_R | PMP_W | PMP_X)
 	csrw CSR_PMPCFG0, a0
 .align 2
-pmp_done:
+.Lpmp_done:
 
 	/*
 	 * The hartid in a0 is expected later on, and we have no firmware
@@ -228,10 +225,7 @@ pmp_done:
 #endif /* CONFIG_RISCV_M_MODE */
 
 	/* Load the global pointer */
-.option push
-.option norelax
-	la gp, __global_pointer$
-.option pop
+	load_global_pointer
 
 	/*
 	 * Disable FPU & VECTOR to detect illegal usage of
@@ -282,12 +276,12 @@ pmp_done:
 	/* Clear BSS for flat non-ELF images */
 	la a3, __bss_start
 	la a4, __bss_stop
-	ble a4, a3, clear_bss_done
-clear_bss:
+	ble a4, a3, .Lclear_bss_done
+.Lclear_bss:
 	REG_S zero, (a3)
 	add a3, a3, RISCV_SZPTR
-	blt a3, a4, clear_bss
-clear_bss_done:
+	blt a3, a4, .Lclear_bss
+.Lclear_bss_done:
 #endif
 	la a2, boot_cpu_hartid
 	XIP_FIXUP_OFFSET a2
@@ -298,6 +292,7 @@ clear_bss_done:
 	la sp, init_thread_union + THREAD_SIZE
 	XIP_FIXUP_OFFSET sp
 	addi sp, sp, -PT_SIZE_ON_STACK
+	scs_load_init_stack
 #ifdef CONFIG_BUILTIN_DTB
 	la a0, __dtb_start
 	XIP_FIXUP_OFFSET a0
@@ -311,11 +306,12 @@ clear_bss_done:
 	call relocate_enable_mmu
 #endif /* CONFIG_MMU */
 
-	call setup_trap_vector
+	call .Lsetup_trap_vector
 	/* Restore C environment */
 	la tp, init_task
 	la sp, init_thread_union + THREAD_SIZE
 	addi sp, sp, -PT_SIZE_ON_STACK
+	scs_load_current
 
 #ifdef CONFIG_KASAN
 	call kasan_early_init
@@ -353,10 +349,10 @@ clear_bss_done:
 	tail .Lsecondary_start_common
 #endif /* CONFIG_RISCV_BOOT_SPINWAIT */
 
-END(_start_kernel)
+SYM_CODE_END(_start_kernel)
 
 #ifdef CONFIG_RISCV_M_MODE
-ENTRY(reset_regs)
+SYM_CODE_START_LOCAL(reset_regs)
 	li	sp, 0
 	li	gp, 0
 	li	tp, 0
@@ -454,5 +450,5 @@ ENTRY(reset_regs)
 .Lreset_regs_done_vector:
 #endif /* CONFIG_RISCV_ISA_V */
 	ret
-END(reset_regs)
+SYM_CODE_END(reset_regs)
 #endif /* CONFIG_RISCV_M_MODE */