AM35xx: add EMAC support

AM35xx has DaVinci-compatible EMAC.

Signed-off-by: Ilya Yanok <yanok@emcraft.com>

diff --git a/arch/arm/cpu/armv7/omap3/Makefile b/arch/arm/cpu/armv7/omap3/Makefile
index 8e8589157c18782cc67172bf8a9c4bcfa3211328..6ebfd327e1f7948e358078a61408a021320e100a 100644 (file)
--- a/arch/arm/cpu/armv7/omap3/Makefile
+++ b/arch/arm/cpu/armv7/omap3/Makefile
@@ -32,6 +32,7 @@ COBJS += clock.o
 COBJS  += mem.o
 COBJS  += sys_info.o
 
+COBJS-$(CONFIG_DRIVER_TI_EMAC) += emac.o
 COBJS-$(CONFIG_EMIF4)  += emif4.o
 COBJS-$(CONFIG_SDRC)   += sdrc.o
 

diff --git a/arch/arm/cpu/armv7/omap3/emac.c b/arch/arm/cpu/armv7/omap3/emac.c
new file mode 100644 (file)
index 0000000..14667f1
--- /dev/null
+++ b/arch/arm/cpu/armv7/omap3/emac.c
@@ -0,0 +1,44 @@
+/*
+ *
+ * DaVinci EMAC initialization.
+ *
+ * (C) Copyright 2011, Ilya Yanok, Emcraft Systems
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc.
+ */
+
+#include <common.h>
+#include <netdev.h>
+#include <asm/io.h>
+#include <asm/arch/am35x_def.h>
+
+/*
+ * Initializes on-chip ethernet controllers.
+ * to override, implement board_eth_init()
+ */
+int cpu_eth_init(bd_t *bis)
+{
+       u32 reset;
+
+       /* ensure that the module is out of reset */
+       reset = readl(&am35x_scm_general_regs->ip_sw_reset);
+       reset &= ~CPGMACSS_SW_RST;
+       writel(reset, &am35x_scm_general_regs->ip_sw_reset);
+
+       return davinci_emac_initialize();
+}

diff --git a/arch/arm/include/asm/arch-omap3/am35x_def.h b/arch/arm/include/asm/arch-omap3/am35x_def.h
index 81942a80630124aca46dfd287879a0a5a582bcb2..bbaf1bc97b5b779afaf9ba75a2cf0fc387807c99 100644 (file)
--- a/arch/arm/include/asm/arch-omap3/am35x_def.h
+++ b/arch/arm/include/asm/arch-omap3/am35x_def.h
@@ -32,6 +32,9 @@
 #ifndef __KERNEL_STRICT_NAMES
 #ifndef __ASSEMBLY__
 
+/* IP_SW_RESET bits */
+#define CPGMACSS_SW_RST                (1 << 1)        /* reset CPGMAC */
+
 /* General register mappings of system control module */
 #define AM35X_SCM_GEN_BASE     0x48002270
 struct am35x_scm_general {

diff --git a/arch/arm/include/asm/arch-omap3/emac_defs.h b/arch/arm/include/asm/arch-omap3/emac_defs.h
new file mode 100644 (file)
index 0000000..8506c55
--- /dev/null
+++ b/arch/arm/include/asm/arch-omap3/emac_defs.h
@@ -0,0 +1,56 @@
+/*
+ * Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
+ *
+ * Based on:
+ *
+ * ----------------------------------------------------------------------------
+ *
+ * dm644x_emac.h
+ *
+ * TI DaVinci (DM644X) EMAC peripheral driver header for DV-EVM
+ *
+ * Copyright (C) 2005 Texas Instruments.
+ *
+ * ----------------------------------------------------------------------------
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * ----------------------------------------------------------------------------
+
+ * Modifications:
+ * ver. 1.0: Sep 2005, TI PSP Team - Created EMAC version for uBoot.
+ *
+ */
+
+#ifndef _AM3517_EMAC_H_
+#define _AM3517_EMAC_H_
+
+#define EMAC_BASE_ADDR                 0x5C010000
+#define EMAC_WRAPPER_BASE_ADDR         0x5C000000
+#define EMAC_WRAPPER_RAM_ADDR          0x5C020000
+#define EMAC_MDIO_BASE_ADDR            0x5C030000
+#define EMAC_HW_RAM_ADDR               0x01E20000
+
+#define EMAC_MDIO_BUS_FREQ             166000000       /* 166 MHZ check */
+#define EMAC_MDIO_CLOCK_FREQ           1000000         /* 2.0 MHz */
+
+/* SOFTRESET macro definition interferes with emac_regs structure definition */
+#undef SOFTRESET
+
+typedef volatile unsigned int  dv_reg;
+typedef volatile unsigned int  *dv_reg_p;
+
+#define DAVINCI_EMAC_VERSION2
+
+#endif  /* _AM3517_EMAC_H_ */