TI: OMAP3: Overo Tobi ethernet support

Add setup for ethernet on Tobi, allowing kernel/ramdisk to be loaded
over tftp.

This also refactors the smc911x driver to allow for detecting when the
chip is missing. I.e. the detect_chip() function is called earlier and
will abort gracefully when the Chip ID read returns all 1's.

Signed-off-by: Olof Johansson <olof@lixom.net>
Acked-by: Dirk Behme <dirk.behme@googlemail.com>
Acked-by: Ben Warren <biggerbadderben@gmail.com>

2 files changed, 91 insertions, 31 deletions

diff --git a/board/overo/overo.c b/board/overo/overo.c
index dd6d28622d1..d42dc132608 100644
--- a/board/overo/overo.c
+++ b/board/overo/overo.c
@@ -29,13 +29,20 @@
  * MA 02111-1307 USA
  */
 #include <common.h>
+#include <netdev.h>
 #include <twl4030.h>
 #include <asm/io.h>
 #include <asm/arch/mux.h>
+#include <asm/arch/mem.h>
 #include <asm/arch/sys_proto.h>
+#include <asm/arch/gpio.h>
 #include <asm/mach-types.h>
 #include "overo.h"
 
+#if defined(CONFIG_CMD_NET)
+static void setup_net_chip(void);
+#endif
+
 /*
  * Routine: board_init
  * Description: Early hardware init.
@@ -62,6 +69,10 @@ int misc_init_r(void)
 	twl4030_power_init();
 	twl4030_led_init();
 
+#if defined(CONFIG_CMD_NET)
+	setup_net_chip();
+#endif
+
 	dieid_num_r();
 
 	return 0;
@@ -77,3 +88,51 @@ void set_muxconf_regs(void)
 {
 	MUX_OVERO();
 }
+
+#if defined(CONFIG_CMD_NET)
+/*
+ * Routine: setup_net_chip
+ * Description: Setting up the configuration GPMC registers specific to the
+ *	      Ethernet hardware.
+ */
+static void setup_net_chip(void)
+{
+	struct ctrl *ctrl_base = (struct ctrl *)OMAP34XX_CTRL_BASE;
+
+	/* Configure GPMC registers */
+	writel(NET_GPMC_CONFIG1, &gpmc_cfg->cs[5].config1);
+	writel(NET_GPMC_CONFIG2, &gpmc_cfg->cs[5].config2);
+	writel(NET_GPMC_CONFIG3, &gpmc_cfg->cs[5].config3);
+	writel(NET_GPMC_CONFIG4, &gpmc_cfg->cs[5].config4);
+	writel(NET_GPMC_CONFIG5, &gpmc_cfg->cs[5].config5);
+	writel(NET_GPMC_CONFIG6, &gpmc_cfg->cs[5].config6);
+	writel(NET_GPMC_CONFIG7, &gpmc_cfg->cs[5].config7);
+
+	/* Enable off mode for NWE in PADCONF_GPMC_NWE register */
+	writew(readw(&ctrl_base ->gpmc_nwe) | 0x0E00, &ctrl_base->gpmc_nwe);
+	/* Enable off mode for NOE in PADCONF_GPMC_NADV_ALE register */
+	writew(readw(&ctrl_base->gpmc_noe) | 0x0E00, &ctrl_base->gpmc_noe);
+	/* Enable off mode for ALE in PADCONF_GPMC_NADV_ALE register */
+	writew(readw(&ctrl_base->gpmc_nadv_ale) | 0x0E00,
+		&ctrl_base->gpmc_nadv_ale);
+
+	/* Make GPIO 64 as output pin and send a magic pulse through it */
+	if (!omap_request_gpio(64)) {
+		omap_set_gpio_direction(64, 0);
+		omap_set_gpio_dataout(64, 1);
+		udelay(1);
+		omap_set_gpio_dataout(64, 0);
+		udelay(1);
+		omap_set_gpio_dataout(64, 1);
+	}
+}
+#endif
+
+int board_eth_init(bd_t *bis)
+{
+	int rc = 0;
+#ifdef CONFIG_SMC911X
+	rc = smc911x_initialize(0, CONFIG_SMC911X_BASE);
+#endif
+	return rc;
+}
diff --git a/board/overo/overo.h b/board/overo/overo.h
index d9fe74e3a81..4c7ac27fa68 100644
--- a/board/overo/overo.h
+++ b/board/overo/overo.h
@@ -83,43 +83,43 @@ const omap3_sysinfo sysinfo = {
 	MUX_VAL(CP(SDRC_DQS2),		(IEN  | PTD | DIS | M0)) /*SDRC_DQS2*/\
 	MUX_VAL(CP(SDRC_DQS3),		(IEN  | PTD | DIS | M0)) /*SDRC_DQS3*/\
  /*GPMC*/\
-	MUX_VAL(CP(GPMC_A1),		(IDIS | PTD | DIS | M0)) /*GPMC_A1*/\
-	MUX_VAL(CP(GPMC_A2),		(IDIS | PTD | DIS | M0)) /*GPMC_A2*/\
-	MUX_VAL(CP(GPMC_A3),		(IDIS | PTD | DIS | M0)) /*GPMC_A3*/\
-	MUX_VAL(CP(GPMC_A4),		(IDIS | PTD | DIS | M0)) /*GPMC_A4*/\
-	MUX_VAL(CP(GPMC_A5),		(IDIS | PTD | DIS | M0)) /*GPMC_A5*/\
-	MUX_VAL(CP(GPMC_A6),		(IDIS | PTD | DIS | M0)) /*GPMC_A6*/\
-	MUX_VAL(CP(GPMC_A7),		(IDIS | PTD | DIS | M0)) /*GPMC_A7*/\
-	MUX_VAL(CP(GPMC_A8),		(IDIS | PTD | DIS | M0)) /*GPMC_A8*/\
-	MUX_VAL(CP(GPMC_A9),		(IDIS | PTD | DIS | M0)) /*GPMC_A9*/\
-	MUX_VAL(CP(GPMC_A10),		(IDIS | PTD | DIS | M0)) /*GPMC_A10*/\
-	MUX_VAL(CP(GPMC_D0),		(IEN  | PTD | DIS | M0)) /*GPMC_D0*/\
-	MUX_VAL(CP(GPMC_D1),		(IEN  | PTD | DIS | M0)) /*GPMC_D1*/\
-	MUX_VAL(CP(GPMC_D2),		(IEN  | PTD | DIS | M0)) /*GPMC_D2*/\
-	MUX_VAL(CP(GPMC_D3),		(IEN  | PTD | DIS | M0)) /*GPMC_D3*/\
-	MUX_VAL(CP(GPMC_D4),		(IEN  | PTD | DIS | M0)) /*GPMC_D4*/\
-	MUX_VAL(CP(GPMC_D5),		(IEN  | PTD | DIS | M0)) /*GPMC_D5*/\
-	MUX_VAL(CP(GPMC_D6),		(IEN  | PTD | DIS | M0)) /*GPMC_D6*/\
-	MUX_VAL(CP(GPMC_D7),		(IEN  | PTD | DIS | M0)) /*GPMC_D7*/\
-	MUX_VAL(CP(GPMC_D8),		(IEN  | PTD | DIS | M0)) /*GPMC_D8*/\
-	MUX_VAL(CP(GPMC_D9),		(IEN  | PTD | DIS | M0)) /*GPMC_D9*/\
-	MUX_VAL(CP(GPMC_D10),		(IEN  | PTD | DIS | M0)) /*GPMC_D10*/\
-	MUX_VAL(CP(GPMC_D11),		(IEN  | PTD | DIS | M0)) /*GPMC_D11*/\
-	MUX_VAL(CP(GPMC_D12),		(IEN  | PTD | DIS | M0)) /*GPMC_D12*/\
-	MUX_VAL(CP(GPMC_D13),		(IEN  | PTD | DIS | M0)) /*GPMC_D13*/\
-	MUX_VAL(CP(GPMC_D14),		(IEN  | PTD | DIS | M0)) /*GPMC_D14*/\
-	MUX_VAL(CP(GPMC_D15),		(IEN  | PTD | DIS | M0)) /*GPMC_D15*/\
+	MUX_VAL(CP(GPMC_A1),		(IDIS | PTU | EN  | M0)) /*GPMC_A1*/\
+	MUX_VAL(CP(GPMC_A2),		(IDIS | PTU | EN  | M0)) /*GPMC_A2*/\
+	MUX_VAL(CP(GPMC_A3),		(IDIS | PTU | EN  | M0)) /*GPMC_A3*/\
+	MUX_VAL(CP(GPMC_A4),		(IDIS | PTU | EN  | M0)) /*GPMC_A4*/\
+	MUX_VAL(CP(GPMC_A5),		(IDIS | PTU | EN  | M0)) /*GPMC_A5*/\
+	MUX_VAL(CP(GPMC_A6),		(IDIS | PTU | EN  | M0)) /*GPMC_A6*/\
+	MUX_VAL(CP(GPMC_A7),		(IDIS | PTU | EN  | M0)) /*GPMC_A7*/\
+	MUX_VAL(CP(GPMC_A8),		(IDIS | PTU | EN  | M0)) /*GPMC_A8*/\
+	MUX_VAL(CP(GPMC_A9),		(IDIS | PTU | EN  | M0)) /*GPMC_A9*/\
+	MUX_VAL(CP(GPMC_A10),		(IDIS | PTU | EN  | M0)) /*GPMC_A10*/\
+	MUX_VAL(CP(GPMC_D0),		(IEN  | PTU | EN  | M0)) /*GPMC_D0*/\
+	MUX_VAL(CP(GPMC_D1),		(IEN  | PTU | EN  | M0)) /*GPMC_D1*/\
+	MUX_VAL(CP(GPMC_D2),		(IEN  | PTU | EN  | M0)) /*GPMC_D2*/\
+	MUX_VAL(CP(GPMC_D3),		(IEN  | PTU | EN  | M0)) /*GPMC_D3*/\
+	MUX_VAL(CP(GPMC_D4),		(IEN  | PTU | EN  | M0)) /*GPMC_D4*/\
+	MUX_VAL(CP(GPMC_D5),		(IEN  | PTU | EN  | M0)) /*GPMC_D5*/\
+	MUX_VAL(CP(GPMC_D6),		(IEN  | PTU | EN  | M0)) /*GPMC_D6*/\
+	MUX_VAL(CP(GPMC_D7),		(IEN  | PTU | EN  | M0)) /*GPMC_D7*/\
+	MUX_VAL(CP(GPMC_D8),		(IEN  | PTU | EN  | M0)) /*GPMC_D8*/\
+	MUX_VAL(CP(GPMC_D9),		(IEN  | PTU | EN  | M0)) /*GPMC_D9*/\
+	MUX_VAL(CP(GPMC_D10),		(IEN  | PTU | EN  | M0)) /*GPMC_D10*/\
+	MUX_VAL(CP(GPMC_D11),		(IEN  | PTU | EN  | M0)) /*GPMC_D11*/\
+	MUX_VAL(CP(GPMC_D12),		(IEN  | PTU | EN  | M0)) /*GPMC_D12*/\
+	MUX_VAL(CP(GPMC_D13),		(IEN  | PTU | EN  | M0)) /*GPMC_D13*/\
+	MUX_VAL(CP(GPMC_D14),		(IEN  | PTU | EN  | M0)) /*GPMC_D14*/\
+	MUX_VAL(CP(GPMC_D15),		(IEN  | PTU | EN  | M0)) /*GPMC_D15*/\
 	MUX_VAL(CP(GPMC_NCS0),		(IDIS | PTU | EN  | M0)) /*GPMC_nCS0*/\
 	MUX_VAL(CP(GPMC_NCS1),		(IDIS | PTU | EN  | M0)) /*GPMC_nCS1*/\
 	MUX_VAL(CP(GPMC_NCS2),		(IDIS | PTU | EN  | M0)) /*GPMC_nCS2*/\
 	MUX_VAL(CP(GPMC_NCS3),		(IEN  | PTU | EN  | M4)) /*GPIO_54*/\
 								 /* - MMC1_WP*/\
 	MUX_VAL(CP(GPMC_NCS4),		(IDIS | PTU | EN  | M0)) /*GPMC_nCS4*/\
-	MUX_VAL(CP(GPMC_NCS5),		(IDIS | PTD | DIS | M0)) /*GPMC_nCS5*/\
+	MUX_VAL(CP(GPMC_NCS5),		(IDIS | PTU | EN  | M0)) /*GPMC_nCS5*/\
 	MUX_VAL(CP(GPMC_NCS6),		(IEN  | PTD | DIS | M0)) /*GPMC_nCS6*/\
 	MUX_VAL(CP(GPMC_NCS7),		(IEN  | PTU | EN  | M0)) /*GPMC_nCS7*/\
 	MUX_VAL(CP(GPMC_NBE1),		(IEN  | PTD | DIS | M0)) /*GPMC_nCS3*/\
-	MUX_VAL(CP(GPMC_CLK),		(IDIS | PTD | DIS | M0)) /*GPMC_CLK*/\
+	MUX_VAL(CP(GPMC_CLK),		(IDIS | PTU | EN  | M0)) /*GPMC_CLK*/\
 	MUX_VAL(CP(GPMC_NADV_ALE),	(IDIS | PTD | DIS | M0)) /*GPMC_nADV_ALE*/\
 	MUX_VAL(CP(GPMC_NOE),		(IDIS | PTD | DIS | M0)) /*GPMC_nOE*/\
 	MUX_VAL(CP(GPMC_NWE),		(IDIS | PTD | DIS | M0)) /*GPMC_nWE*/\
@@ -127,7 +127,7 @@ const omap3_sysinfo sysinfo = {
 	MUX_VAL(CP(GPMC_NWP),		(IEN  | PTD | DIS | M0)) /*GPMC_nWP*/\
 	MUX_VAL(CP(GPMC_WAIT0),		(IEN  | PTU | EN  | M0)) /*GPMC_WAIT0*/\
 	MUX_VAL(CP(GPMC_WAIT1),		(IEN  | PTU | EN  | M0)) /*GPMC_WAIT1*/\
-	MUX_VAL(CP(GPMC_WAIT2),		(IEN  | PTU | DIS | M4)) /*GPIO_64*/\
+	MUX_VAL(CP(GPMC_WAIT2),		(IEN  | PTU | EN  | M4)) /*GPIO_64*/\
 								 /* - SMSC911X_NRES*/\
 	MUX_VAL(CP(GPMC_WAIT3),		(IEN  | PTU | EN  | M0)) /*GPMC_nCS3*/\
  /*DSS*/\
@@ -270,8 +270,8 @@ const omap3_sysinfo sysinfo = {
 	MUX_VAL(CP(MCSPI1_SOMI),	(IEN  | PTD | DIS | M0)) /*McSPI1_SOMI */\
 	MUX_VAL(CP(MCSPI1_CS0),		(IEN  | PTD | EN  | M0)) /*McSPI1_CS0*/\
 	MUX_VAL(CP(MCSPI1_CS1),		(IDIS | PTD | EN  | M0)) /*McSPI1_CS1*/\
-	MUX_VAL(CP(MCSPI1_CS2),		(IEN  | PTD | DIS | M4)) /*GPIO_176*/\
-								 /* - SMSC911X_IRQ*/\
+	MUX_VAL(CP(MCSPI1_CS2),		(IEN  | PTU | DIS | M4)) /*GPIO_176 */\
+								 /* - LAN_INTR */\
 	MUX_VAL(CP(MCSPI1_CS3),		(IEN  | PTD | DIS | M3)) /*HSUSB2_DATA2*/\
 	MUX_VAL(CP(MCSPI2_CLK),		(IEN  | PTD | DIS | M3)) /*HSUSB2_DATA7*/\
 	MUX_VAL(CP(MCSPI2_SIMO),	(IEN  | PTD | DIS | M3)) /*HSUSB2_DATA4*/\
@@ -378,4 +378,5 @@ const omap3_sysinfo sysinfo = {
 	MUX_VAL(CP(SDRC_CKE0),		(IDIS | PTU | EN  | M0)) /*sdrc_cke0*/\
 	MUX_VAL(CP(SDRC_CKE1),		(IDIS | PTU | EN  | M0)) /*sdrc_cke1*/
 
+
 #endif