ZOOM2 Add serial support.

Zoom2 serial is in general supplied by one of the 4 UARTS on the debug board.
The default serial is from the USB connector on left side of the debug board.
The USB connector will produce 2 of the 4 UARTS.  On your host pick the first
enumeration.

The details of the setting of the serial gpmc setup are not available.
The values were provided by another party.

The serial port set up is the same with Zoom1.
Baud rate 115200, 8 bit data, no parity, 1 stop bit, no flow.

The kernel bootargs are
console=ttyS3,115200n8

Signed-off-by: Tom Rix <Tom.Rix@windriver.com>

1 files changed, 38 insertions, 0 deletions

diff --git a/board/omap3/zoom2/zoom2.c b/board/omap3/zoom2/zoom2.c
index 0700c56..83e02f6 100644
--- a/board/omap3/zoom2/zoom2.c
+++ b/board/omap3/zoom2/zoom2.c
@@ -30,10 +30,32 @@
  */
 #include <common.h>
 #include <asm/io.h>
+#include <asm/arch/mem.h>
 #include <asm/arch/mux.h>
 #include <asm/arch/sys_proto.h>
 #include <asm/mach-types.h>
 #include "zoom2.h"
+#include "zoom2_serial.h"
+
+/*
+ * This the the zoom2, board specific, gpmc configuration for the
+ * quad uart on the debug board.   The more general gpmc configurations
+ * are setup at the cpu level in cpu/arm_cortexa8/omap3/mem.c
+ *
+ * The details of the setting of the serial gpmc setup are not available.
+ * The values were provided by another party.
+ */
+extern void enable_gpmc_config(u32 *gpmc_config, gpmc_csx_t *gpmc_cs_base,
+			       u32 base, u32 size);
+
+static u32 gpmc_serial_TL16CP754C[GPMC_MAX_REG] = {
+	0x00011000,
+	0x001F1F01,
+	0x00080803,
+	0x1D091D09,
+	0x041D1F1F,
+	0x1D0904C4, 0
+};
 
 /*
  * Routine: board_init
@@ -42,13 +64,29 @@
 int board_init (void)
 {
 	DECLARE_GLOBAL_DATA_PTR;
+	gpmc_csx_t *serial_cs_base;
+	u32 *gpmc_config;
 
 	gpmc_init ();		/* in SRAM or SDRAM, finish GPMC */
+
+	/* Configure console support on zoom2 */
+	gpmc_config = gpmc_serial_TL16CP754C;
+	serial_cs_base = (gpmc_csx_t *) (GPMC_CONFIG_CS0_BASE +
+					 (3 * GPMC_CONFIG_WIDTH));
+	enable_gpmc_config(gpmc_config,
+			   serial_cs_base,
+			   SERIAL_TL16CP754C_BASE,
+			   GPMC_SIZE_16M);
+
 	/* board id for Linux */
 	gd->bd->bi_arch_number = MACH_TYPE_OMAP_ZOOM2;
 	/* boot param addr */
 	gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100);
 
+#if defined(CONFIG_STATUS_LED) && defined(STATUS_LED_BOOT)
+	status_led_set (STATUS_LED_BOOT, STATUS_LED_ON);
+#endif
+
 	return 0;
 }