From: Heinrich Schuchardt <xypron.glpk@gmx.de>
Date: Thu, 10 Sep 2020 05:47:39 +0000 (+0200)
Subject: riscv: define function set_gd()
X-Git-Tag: v2025.01-rc5-pxa1908~2214^2~2
X-Git-Url: http://git.dujemihanovic.xyz/%22http:/www.sics.se/static/git-favicon.png?a=commitdiff_plain;h=6b9966e1aa362e97e9b33b7b82ff713f2ddea2c1;p=u-boot.git

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>
---

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 */