ARMv7: Clean up console code

- Guard console_init() with CONFIG_EARLY_CONSOLE in bootblock
 - Don't initialize console twice in the bootblock
 - remove printk in memory init that would mess up the UART
 - unconditionally run console_init() in romstage, as it is
   also unconditionally run in the bootblock.

BUG=none
TEST=boot tested on Snow, no serial garbage and no multiple UART
     init in bootblock.
BRANCH=none
Signed-off-by: Stefan Reinauer <reinauer@google.com>

Change-Id: I3c203fa541ea5fffa2ae38943278d6358db45379
Reviewed-on: https://gerrit.chromium.org/gerrit/51497
Reviewed-by: Gabe Black <gabeblack@chromium.org>
Reviewed-by: David Hendricks <dhendrix@chromium.org>
Commit-Queue: Stefan Reinauer <reinauer@google.com>
Tested-by: Stefan Reinauer <reinauer@google.com>

src/arch/armv7/bootblock_simple.c

@@ -68,12 +68,12 @@ void main(void)
 		bootblock_mainboard_init();
 	}
 
+#ifdef CONFIG_EARLY_CONSOLE
 	console_init();
-	printk(BIOS_INFO, "hello from bootblock\n");
-	printk(BIOS_INFO, "bootblock main(): loading romstage\n");
+#endif
+
 	entry = cbfs_load_stage(CBFS_DEFAULT_MEDIA, stage_name);
 
-	printk(BIOS_INFO, "bootblock main(): jumping to romstage\n");
 	if (entry) stage_exit(entry);
 	hlt();
 }

src/cpu/samsung/exynos5250/bootblock.c

@@ -17,7 +17,6 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
-#include <console/console.h>
 #include "clk.h"
 #include "wakeup.h"
 
@@ -38,6 +37,4 @@ void bootblock_cpu_init(void)
 	 * (ex, SPI, SD/MMC, or eMMC) now; but for Exynos platform, that is
 	 * already handled by iROM so there's no need to setup again.
 	 */
-
-	console_init();
 }

src/mainboard/google/snow/memory.c

@@ -490,7 +490,6 @@ static int board_get_config(void)
 	id1 = gpio_read_mvl3(BOARD_ID1_GPIO);
 	if (id0 < 0 || id1 < 0)
 		return -1;
-	printk(BIOS_DEBUG, "%s: id0: %u, id1: %u\n", __func__, id0, id1);
 
 	for (i = 0; i < ARRAY_SIZE(id_map); i++) {
 		if (id0 == id_map[i].id0 && id1 == id_map[i].id1) {

src/mainboard/google/snow/romstage.c

@@ -129,7 +129,7 @@ static void setup_gpio(void)
 
 static void setup_memory(struct mem_timings *mem, int is_resume)
 {
-	printk(BIOS_SPEW, "man: 0x%x type: 0x%x, div: 0x%x, mhz: 0x%x\n",
+	printk(BIOS_SPEW, "man: 0x%x type: 0x%x, div: 0x%x, mhz: %d\n",
 	       mem->mem_manuf,
 	       mem->mem_type,
 	       mem->mpll_mdiv,
@@ -168,8 +168,9 @@ void main(void)
 	 * to re-initialize serial console drivers again. */
 	mem = setup_clock();
 
+	console_init();
+
 	if (!is_resume) {
-		console_init();
 		setup_power();
 	}