x86: Move gd_addr into arch_global_data

Move this field into arch_global_data and tidy up.
Signed-off-by: NSimon Glass <sjg@chromium.org>
[trini: Add arch/x86/cpu/cpu.c changes after Graeme's comments]
Signed-off-by: NTom Rini <trini@ti.com>

arch/x86/cpu/cpu.c

@@ -100,9 +100,9 @@ void setup_gdt(gd_t *id, u64 *gdt_addr)
 	gdt_addr[X86_GDT_ENTRY_32BIT_DS] = GDT_ENTRY(0xc093, 0, 0xfffff);
 
 	/* FS: data, read/write, 4 GB, base (Global Data Pointer) */
-	id->gd_addr = id;
+	id->arch.gd_addr = id;
 	gdt_addr[X86_GDT_ENTRY_32BIT_FS] = GDT_ENTRY(0xc093,
-		     (ulong)&id->gd_addr, 0xfffff);
+		     (ulong)&id->arch.gd_addr, 0xfffff);
 
 	/* 16-bit CS: code, read/execute, 64 kB, base 0 */
 	gdt_addr[X86_GDT_ENTRY_16BIT_CS] = GDT_ENTRY(0x109b, 0, 0x0ffff);

arch/x86/include/asm/global_data.h

@@ -28,6 +28,7 @@
 
 /* Architecture-specific global data */
 struct arch_global_data {
+	struct global_data *gd_addr;		/* Location of Global Data */
 };
 
 /*
@@ -44,8 +45,6 @@ typedef struct global_data gd_t;
 
 struct global_data {
 	struct arch_global_data arch;	/* architecture-specific data */
-	/* NOTE: gd_addr MUST be first member of struct global_data! */
-	gd_t *gd_addr;	/* Location of Global Data */
 	bd_t		*bd;
 	unsigned long	flags;
 	unsigned int	baudrate;