From: Bin Meng <bmeng.cn@gmail.com>
Date: Thu, 29 Aug 2019 09:53:04 +0000 (-0700)
Subject: x86: qemu: Extract getting memory size to a separate routine
X-Git-Url: http://git.dujemihanovic.xyz/?a=commitdiff_plain;h=f4c0030074544e8d3105bc9e4debb82e964ab126;p=u-boot.git

x86: qemu: Extract getting memory size to a separate routine

This extracts getting memory size logic in dram_init() to a separate
routine qemu_get_low_memory_size(). No functional changes.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Aiden Park <aiden.park@intel.com>
---

diff --git a/arch/x86/cpu/qemu/dram.c b/arch/x86/cpu/qemu/dram.c
index 736c4c3ace..c29b073d7c 100644
--- a/arch/x86/cpu/qemu/dram.c
+++ b/arch/x86/cpu/qemu/dram.c
@@ -9,7 +9,7 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
-int dram_init(void)
+u32 qemu_get_low_memory_size(void)
 {
 	u32 ram;
 
@@ -19,7 +19,12 @@ int dram_init(void)
 	ram |= ((u32)inb(CMOS_DATA_PORT)) << 6;
 	ram += 16 * 1024;
 
-	gd->ram_size = ram * 1024;
+	return ram * 1024;
+}
+
+int dram_init(void)
+{
+	gd->ram_size = qemu_get_low_memory_size();
 	post_code(POST_DRAM);
 
 	return 0;
diff --git a/arch/x86/include/asm/arch-qemu/qemu.h b/arch/x86/include/asm/arch-qemu/qemu.h
index 100eb8e646..c98deb2cd2 100644
--- a/arch/x86/include/asm/arch-qemu/qemu.h
+++ b/arch/x86/include/asm/arch-qemu/qemu.h
@@ -37,4 +37,11 @@
 #define PMREGMISC	0x80
 #define PMIOSE		(1 << 0)
 
+/**
+ * qemu_get_low_memory_size() - Get low memory size
+ *
+ * @return:	size of memory below 4GiB
+ */
+u32 qemu_get_low_memory_size(void);
+
 #endif /* _ARCH_QEMU_H_ */