[ARM] MV78xx0: Support for Buffalo WXL (Terastation Duo)

* Modification of Kconfig to add the Option
* 1 new file : buffalo-wxl-setup.c
This file is inspired from the db-78xx0-setup.c already present.
The following is done:
  - Configure MPP Lines for the plateform (see my patch for MPP)
This is taken from the stock kernel provided by buffalotech (the vendor)
  - GigaBit Ethernet
  - Sata
  - Uart are initiallized in a different way than on the dev board as we
have one core only.
  - USB

The kernel has been running for some days now on my plateform.

Signed-off-by: Sebastien Requiem <sebastien@kolios.dk>
Signed-off-by: Nicolas Pitre <nico@marvell.com>

arch/arm/configs/mv78xx0_defconfig

@@ -176,6 +176,7 @@ CONFIG_ARCH_MV78XX0=y
 #
 CONFIG_MACH_DB78X00_BP=y
 CONFIG_MACH_RD78X00_MASA=y
+CONFIG_MACH_TERASTATION_WXL=y
 CONFIG_PLAT_ORION=y
 
 #

arch/arm/mach-mv78xx0/Kconfig

@@ -14,6 +14,12 @@ config MACH_RD78X00_MASA
 	  Say 'Y' here if you want your kernel to support the
 	  Marvell RD-78x00-mASA Reference Design.
 
+config MACH_TERASTATION_WXL
+	bool "Buffalo WLX (Terastation Duo) NAS"
+	help
+	  Say 'Y' here if you want your kernel to support the
+	  Buffalo WXL Nas.
+
 endmenu
 
 endif

arch/arm/mach-mv78xx0/Makefile

@@ -1,3 +1,4 @@
 obj-y				+= common.o addr-map.o mpp.o irq.o pcie.o
 obj-$(CONFIG_MACH_DB78X00_BP)	+= db78x00-bp-setup.o
 obj-$(CONFIG_MACH_RD78X00_MASA)	+= rd78x00-masa-setup.o
+obj-$(CONFIG_MACH_TERASTATION_WXL) += buffalo-wxl-setup.o

arch/arm/mach-mv78xx0/buffalo-wxl-setup.c

@@ -0,0 +1,155 @@
+/*
+ * arch/arm/mach-mv78xx0/buffalo-wxl-setup.c
+ *
+ * Buffalo WXL (Terastation Duo) Setup routines
+ *
+ * sebastien requiem <sebastien@requiem.fr>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2.  This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/ata_platform.h>
+#include <linux/mv643xx_eth.h>
+#include <linux/ethtool.h>
+#include <linux/i2c.h>
+#include <mach/mv78xx0.h>
+#include <asm/mach-types.h>
+#include <asm/mach/arch.h>
+#include "common.h"
+#include "mpp.h"
+
+
+/* This arch has 2 Giga Ethernet */
+
+static struct mv643xx_eth_platform_data db78x00_ge00_data = {
+	.phy_addr	= MV643XX_ETH_PHY_ADDR(0),
+};
+
+static struct mv643xx_eth_platform_data db78x00_ge01_data = {
+	.phy_addr	= MV643XX_ETH_PHY_ADDR(8),
+};
+
+
+/* 2 SATA controller supporting HotPlug */
+
+static struct mv_sata_platform_data db78x00_sata_data = {
+	.n_ports	= 2,
+};
+
+static struct i2c_board_info __initdata db78x00_i2c_rtc = {
+	I2C_BOARD_INFO("ds1338", 0x68),
+};
+
+
+static unsigned int wxl_mpp_config[] __initdata = {
+	MPP0_GE1_TXCLK,
+	MPP1_GE1_TXCTL,
+	MPP2_GE1_RXCTL,
+	MPP3_GE1_RXCLK,
+	MPP4_GE1_TXD0,
+	MPP5_GE1_TXD1,
+	MPP6_GE1_TXD2,
+	MPP7_GE1_TXD3,
+	MPP8_GE1_RXD0,
+	MPP9_GE1_RXD1,
+	MPP10_GE1_RXD2,
+	MPP11_GE1_RXD3,
+	MPP12_GPIO,
+	MPP13_SYSRST_OUTn,
+	MPP14_SATA1_ACTn,
+	MPP15_SATA0_ACTn,
+	MPP16_GPIO,
+	MPP17_GPIO,
+	MPP18_GPIO,
+	MPP19_GPIO,
+	MPP20_GPIO,
+	MPP21_GPIO,
+	MPP22_GPIO,
+	MPP23_GPIO,
+	MPP24_UA2_TXD,
+	MPP25_UA2_RXD,
+	MPP26_UA2_CTSn,
+	MPP27_UA2_RTSn,
+	MPP28_GPIO,
+	MPP29_SYSRST_OUTn,
+	MPP30_GPIO,
+	MPP31_GPIO,
+	MPP32_GPIO,
+	MPP33_GPIO,
+	MPP34_GPIO,
+	MPP35_GPIO,
+	MPP36_GPIO,
+	MPP37_GPIO,
+	MPP38_GPIO,
+	MPP39_GPIO,
+	MPP40_UNUSED,
+	MPP41_UNUSED,
+	MPP42_UNUSED,
+	MPP43_UNUSED,
+	MPP44_UNUSED,
+	MPP45_UNUSED,
+	MPP46_UNUSED,
+	MPP47_UNUSED,
+	MPP48_SATA1_ACTn,
+	MPP49_SATA0_ACTn,
+	0
+};
+
+
+static void __init wxl_init(void)
+{
+	/*
+	 * Basic MV78xx0 setup. Needs to be called early.
+	 */
+	mv78xx0_init();
+	mv78xx0_mpp_conf(wxl_mpp_config);
+
+	/*
+	 * Partition on-chip peripherals between the two CPU cores.
+	 */
+	mv78xx0_ehci0_init();
+	mv78xx0_ehci1_init();
+	mv78xx0_ehci2_init();
+	mv78xx0_ge00_init(&db78x00_ge00_data);
+	mv78xx0_ge01_init(&db78x00_ge01_data);
+	mv78xx0_sata_init(&db78x00_sata_data);
+	mv78xx0_uart0_init();
+	mv78xx0_uart1_init();
+	mv78xx0_uart2_init();
+	mv78xx0_uart3_init();
+	mv78xx0_i2c_init();
+	i2c_register_board_info(0, &db78x00_i2c_rtc, 1);
+}
+
+static int __init wxl_pci_init(void)
+{
+	if (machine_is_terastation_wxl()) {
+		/*
+		 * Assign the x16 PCIe slot on the board to CPU core
+		 * #0, and let CPU core #1 have the four x1 slots.
+		 */
+		if (mv78xx0_core_index() == 0)
+			mv78xx0_pcie_init(0, 1);
+		else
+			mv78xx0_pcie_init(1, 0);
+	}
+
+	return 0;
+}
+subsys_initcall(wxl_pci_init);
+
+MACHINE_START(TERASTATION_WXL, "Buffalo Nas WXL")
+	/* Maintainer: Sebastien Requiem <sebastien@requiem.fr> */
+	.phys_io	= MV78XX0_REGS_PHYS_BASE,
+	.io_pg_offst	= ((MV78XX0_REGS_VIRT_BASE) >> 18) & 0xfffc,
+	.boot_params	= 0x00000100,
+	.init_machine	= wxl_init,
+	.map_io		= mv78xx0_map_io,
+	.init_irq	= mv78xx0_init_irq,
+	.timer		= &mv78xx0_timer,
+MACHINE_END