x86: Remove x86 specific GD flags as they are not referenced at all

This patch removes the x86 architecture specific GD flags
(GD_FLG_COLD_BOOT & GD_FLG_WARM_BOOT), as they are not used. Only
GD_FLG_COLD_BOOT is referenced in coreboot.c but assigned in start16.S.
But the coreboot target does not use start16.S at all and boots directly
from the 32-bit start code.
Signed-off-by: NStefan Roese <sr@denx.de>
Cc: Bin Meng <bmeng.cn@gmail.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Tom Rini <trini@konsulko.com>
Cc: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Reviewed-by: NBin Meng <bmeng.cn@gmail.com>
Tested-by: NBin Meng <bmeng.cn@gmail.com>
Reviewed-by: NSimon Goldschmidt <simon.k.r.goldschmidt@gmail.com>

arch/x86/cpu/coreboot/coreboot.c

@@ -73,9 +73,6 @@ static void board_final_cleanup(void)
 
 int last_stage_init(void)
 {
-	if (gd->flags & GD_FLG_COLD_BOOT)
-		timestamp_add_to_bootstage();
-
 	/* start usb so that usb keyboard can be used as input device */
 	if (CONFIG_IS_ENABLED(USB_KEYBOARD))
 		usb_init();

arch/x86/cpu/start.S

@@ -40,9 +40,6 @@ _x86boot_start:
 	movl	%eax, %cr0
 	wbinvd
 
-	/* Tell 32-bit code it is being entered from an in-RAM copy */
-	movl	$GD_FLG_WARM_BOOT, %ebx
-
 	/*
 	 * Zero the BIST (Built-In Self Test) value since we don't have it.
 	 * It must be 0 or the previous loader would have reported an error.
@@ -55,11 +52,7 @@ _x86boot_start:
 	.align	4
 	.long	0x12345678
 _start:
-	/*
-	 * This is the 32-bit cold-reset entry point, coming from start16.
-	 * Set %ebx to GD_FLG_COLD_BOOT to indicate this.
-	 */
-	movl	$GD_FLG_COLD_BOOT, %ebx
+	/* This is the 32-bit cold-reset entry point, coming from start16 */
 
 	/* Save BIST */
 	movl	%eax, %ebp

arch/x86/cpu/start16.S

@@ -23,9 +23,6 @@ start16:
 	/* Save BIST */
 	movl	%eax, %ecx
 
-	/* Set the Cold Boot / Hard Reset flag */
-	movl	$GD_FLG_COLD_BOOT, %ebx
-
 	xorl	%eax, %eax
 	movl	%eax, %cr3	/* Invalidate TLB */
 

arch/x86/include/asm/global_data.h

@@ -137,10 +137,4 @@ static inline __attribute__((no_instrument_function)) gd_t *get_fs_gd_ptr(void)
 
 #endif
 
-/*
- * Our private Global Data Flags
- */
-#define GD_FLG_COLD_BOOT	0x10000	/* Cold Boot */
-#define GD_FLG_WARM_BOOT	0x20000	/* Warm Boot */
-
 #endif /* __ASM_GBL_DATA_H */