From 6b9966e1aa362e97e9b33b7b82ff713f2ddea2c1 Mon Sep 17 00:00:00 2001
From: Heinrich Schuchardt <xypron.glpk@gmx.de>
Date: Thu, 10 Sep 2020 07:47:39 +0200
Subject: [PATCH] riscv: define function set_gd()
Function set_gd() is needed in the UEFI sub-system if the global data
pointer is stored in a register.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
---
arch/riscv/include/asm/global_data.h | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/arch/riscv/include/asm/global_data.h b/arch/riscv/include/asm/global_data.h
index 2eb14815bc..b711fcc44d 100644
--- a/arch/riscv/include/asm/global_data.h
+++ b/arch/riscv/include/asm/global_data.h
@@ -39,4 +39,13 @@ struct arch_global_data {
#define DECLARE_GLOBAL_DATA_PTR register gd_t *gd asm ("gp")
+static inline void set_gd(volatile gd_t *gd_ptr)
+{
+#ifdef CONFIG_64BIT
+ asm volatile("ld gp, %0\n" : : "m"(gd_ptr));
+#else
+ asm volatile("lw gp, %0\n" : : "m"(gd_ptr));
+#endif
+}
+
#endif /* __ASM_GBL_DATA_H */
--
2.39.5