From: Anton Blanchard <antonb@tenstorrent.com>
Date: Thu, 8 Aug 2024 02:14:17 +0000 (+0000)
Subject: riscv: resume needs to be a global
X-Git-Url: http://git.dujemihanovic.xyz/%22http:/www.sics.se/static/git-logo.png?a=commitdiff_plain;h=8e1acda14ea0ac08a77ea7d3d40ab7255ccbe4c5;p=u-boot.git

riscv: resume needs to be a global

If we take an exception before u-boot is relocated, there's a good
chance we will end up in an endless loop of exceptions because resume is
invalid until after relocation.

Signed-off-by: Anton Blanchard <antonb@tenstorrent.com>
Reviewed-by: Leo Yu-Chi Liang <ycliang@andestech.com>
---

diff --git a/arch/riscv/include/asm/global_data.h b/arch/riscv/include/asm/global_data.h
index 593d9276d3..d356752a56 100644
--- a/arch/riscv/include/asm/global_data.h
+++ b/arch/riscv/include/asm/global_data.h
@@ -42,6 +42,7 @@ struct arch_global_data {
 #ifdef CONFIG_SMBIOS
 	ulong smbios_start;		/* Start address of SMBIOS table */
 #endif
+	struct resume_data *resume;
 };
 
 #include <asm-generic/global_data.h>
diff --git a/arch/riscv/lib/interrupts.c b/arch/riscv/lib/interrupts.c
index 714cc92d03..ef1056eeb6 100644
--- a/arch/riscv/lib/interrupts.c
+++ b/arch/riscv/lib/interrupts.c
@@ -22,11 +22,9 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
-static struct resume_data *resume;
-
 void set_resume(struct resume_data *data)
 {
-	resume = data;
+	gd->arch.resume = data;
 }
 
 static void show_efi_loaded_images(uintptr_t epc)
@@ -138,9 +136,9 @@ static void _exit_trap(ulong code, ulong epc, ulong tval, struct pt_regs *regs)
 		"Store/AMO page fault",
 	};
 
-	if (resume) {
-		resume->code = code;
-		longjmp(resume->jump, 1);
+	if (gd->arch.resume) {
+		gd->arch.resume->code = code;
+		longjmp(gd->arch.resume->jump, 1);
 	}
 
 	if (code < ARRAY_SIZE(exception_code))