--- /dev/null
+/*
+ * Copyright (C) 2009 Ilya Yanok, Emcraft Systems Ltd, <yanok@emcraft.com>
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/memory.h>
+#include <linux/platform_device.h>
+#include <linux/mtd/physmap.h>
+#include <linux/mtd/nand.h>
+#include <linux/gpio.h>
+
+#include <mach/hardware.h>
+#include <mach/irqs.h>
+#include <asm/mach-types.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/time.h>
+#include <asm/mach/map.h>
+#include <mach/common.h>
+#include <asm/page.h>
+#include <asm/setup.h>
+#include <mach/board-qong.h>
+#include <mach/imx-uart.h>
+#include <mach/iomux-mx3.h>
+#include "devices.h"
+
+/* FPGA defines */
+#define QONG_FPGA_VERSION(major, minor, rev) \
+ (((major & 0xF) << 12) | ((minor & 0xF) << 8) | (rev & 0xFF))
+
+#define QONG_FPGA_BASEADDR CS1_BASE_ADDR
+#define QONG_FPGA_PERIPH_SIZE (1 << 24)
+
+#define QONG_FPGA_CTRL_BASEADDR QONG_FPGA_BASEADDR
+#define QONG_FPGA_CTRL_SIZE 0x10
+/* FPGA control registers */
+#define QONG_FPGA_CTRL_VERSION 0x00
+
+#define QONG_DNET_ID 1
+#define QONG_DNET_BASEADDR \
+ (QONG_FPGA_BASEADDR + QONG_DNET_ID * QONG_FPGA_PERIPH_SIZE)
+#define QONG_DNET_SIZE 0x00001000
+
+#define QONG_FPGA_IRQ IOMUX_TO_IRQ(MX31_PIN_DTR_DCE1)
+
+/*
+ * This file contains the board-specific initialization routines.
+ */
+
+static struct imxuart_platform_data uart_pdata = {
+ .flags = IMXUART_HAVE_RTSCTS,
+};
+
+static int uart_pins[] = {
+ MX31_PIN_CTS1__CTS1,
+ MX31_PIN_RTS1__RTS1,
+ MX31_PIN_TXD1__TXD1,
+ MX31_PIN_RXD1__RXD1
+};
+
+static inline void mxc_init_imx_uart(void)
+{
+ mxc_iomux_setup_multiple_pins(uart_pins, ARRAY_SIZE(uart_pins),
+ "uart-0");
+ mxc_register_device(&mxc_uart_device0, &uart_pdata);
+}
+
+static struct resource dnet_resources[] = {
+ [0] = {
+ .name = "dnet-memory",
+ .start = QONG_DNET_BASEADDR,
+ .end = QONG_DNET_BASEADDR + QONG_DNET_SIZE - 1,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = QONG_FPGA_IRQ,
+ .end = QONG_FPGA_IRQ,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct platform_device dnet_device = {
+ .name = "dnet",
+ .id = -1,
+ .num_resources = ARRAY_SIZE(dnet_resources),
+ .resource = dnet_resources,
+};
+
+static int __init qong_init_dnet(void)
+{
+ int ret;
+
+ ret = platform_device_register(&dnet_device);
+ return ret;
+}
+
+/* MTD NOR flash */
+
+static struct physmap_flash_data qong_flash_data = {
+ .width = 2,
+};
+
+static struct resource qong_flash_resource = {
+ .start = CS0_BASE_ADDR,
+ .end = CS0_BASE_ADDR + QONG_NOR_SIZE - 1,
+ .flags = IORESOURCE_MEM,
+};
+
+static struct platform_device qong_nor_mtd_device = {
+ .name = "physmap-flash",
+ .id = 0,
+ .dev = {
+ .platform_data = &qong_flash_data,
+ },
+ .resource = &qong_flash_resource,
+ .num_resources = 1,
+};
+
+static void qong_init_nor_mtd(void)
+{
+ (void)platform_device_register(&qong_nor_mtd_device);
+}
+
+/*
+ * Hardware specific access to control-lines
+ */
+static void qong_nand_cmd_ctrl(struct mtd_info *mtd, int cmd, unsigned int ctrl)
+{
+ struct nand_chip *nand_chip = mtd->priv;
+
+ if (cmd == NAND_CMD_NONE)
+ return;
+
+ if (ctrl & NAND_CLE)
+ writeb(cmd, nand_chip->IO_ADDR_W + (1 << 24));
+ else
+ writeb(cmd, nand_chip->IO_ADDR_W + (1 << 23));
+}
+
+/*
+ * Read the Device Ready pin.
+ */
+static int qong_nand_device_ready(struct mtd_info *mtd)
+{
+ return gpio_get_value(IOMUX_TO_GPIO(MX31_PIN_NFRB));
+}
+
+static void qong_nand_select_chip(struct mtd_info *mtd, int chip)
+{
+ if (chip >= 0)
+ gpio_set_value(IOMUX_TO_GPIO(MX31_PIN_NFCE_B), 0);
+ else
+ gpio_set_value(IOMUX_TO_GPIO(MX31_PIN_NFCE_B), 1);
+}
+
+static struct platform_nand_data qong_nand_data = {
+ .chip = {
+ .chip_delay = 20,
+ .options = 0,
+ },
+ .ctrl = {
+ .cmd_ctrl = qong_nand_cmd_ctrl,
+ .dev_ready = qong_nand_device_ready,
+ .select_chip = qong_nand_select_chip,
+ }
+};
+
+static struct resource qong_nand_resource = {
+ .start = CS3_BASE_ADDR,
+ .end = CS3_BASE_ADDR + SZ_32M - 1,
+ .flags = IORESOURCE_MEM,
+};
+
+static struct platform_device qong_nand_device = {
+ .name = "gen_nand",
+ .id = -1,
+ .dev = {
+ .platform_data = &qong_nand_data,
+ },
+ .num_resources = 1,
+ .resource = &qong_nand_resource,
+};
+
+static void __init qong_init_nand_mtd(void)
+{
+ /* init CS */
+ __raw_writel(0x00004f00, CSCR_U(3));
+ __raw_writel(0x20013b31, CSCR_L(3));
+ __raw_writel(0x00020800, CSCR_A(3));
+ mxc_iomux_set_gpr(MUX_SDCTL_CSD1_SEL, true);
+
+ /* enable pin */
+ mxc_iomux_mode(IOMUX_MODE(MX31_PIN_NFCE_B, IOMUX_CONFIG_GPIO));
+ if (!gpio_request(IOMUX_TO_GPIO(MX31_PIN_NFCE_B), "nand_enable"))
+ gpio_direction_output(IOMUX_TO_GPIO(MX31_PIN_NFCE_B), 0);
+
+ /* ready/busy pin */
+ mxc_iomux_mode(IOMUX_MODE(MX31_PIN_NFRB, IOMUX_CONFIG_GPIO));
+ if (!gpio_request(IOMUX_TO_GPIO(MX31_PIN_NFRB), "nand_rdy"))
+ gpio_direction_input(IOMUX_TO_GPIO(MX31_PIN_NFRB));
+
+ /* write protect pin */
+ mxc_iomux_mode(IOMUX_MODE(MX31_PIN_NFWP_B, IOMUX_CONFIG_GPIO));
+ if (!gpio_request(IOMUX_TO_GPIO(MX31_PIN_NFWP_B), "nand_wp"))
+ gpio_direction_input(IOMUX_TO_GPIO(MX31_PIN_NFWP_B));
+
+ platform_device_register(&qong_nand_device);
+}
+
+static void __init qong_init_fpga(void)
+{
+ void __iomem *regs;
+ u32 fpga_ver;
+
+ regs = ioremap(QONG_FPGA_CTRL_BASEADDR, QONG_FPGA_CTRL_SIZE);
+ if (!regs) {
+ printk(KERN_ERR "%s: failed to map registers, aborting.\n",
+ __func__);
+ return;
+ }
+
+ fpga_ver = readl(regs + QONG_FPGA_CTRL_VERSION);
+ iounmap(regs);
+ printk(KERN_INFO "Qong FPGA version %d.%d.%d\n",
+ (fpga_ver & 0xF000) >> 12,
+ (fpga_ver & 0x0F00) >> 8, fpga_ver & 0x00FF);
+ if (fpga_ver < QONG_FPGA_VERSION(0, 8, 7)) {
+ printk(KERN_ERR "qong: Unexpected FPGA version, FPGA-based "
+ "devices won't be registered!\n");
+ return;
+ }
+
+ /* register FPGA-based devices */
+ qong_init_nand_mtd();
+ qong_init_dnet();
+}
+
+/*
+ * This structure defines the MX31 memory map.
+ */
+static struct map_desc qong_io_desc[] __initdata = {
+ {
+ .virtual = AIPS1_BASE_ADDR_VIRT,
+ .pfn = __phys_to_pfn(AIPS1_BASE_ADDR),
+ .length = AIPS1_SIZE,
+ .type = MT_DEVICE_NONSHARED
+ }, {
+ .virtual = AIPS2_BASE_ADDR_VIRT,
+ .pfn = __phys_to_pfn(AIPS2_BASE_ADDR),
+ .length = AIPS2_SIZE,
+ .type = MT_DEVICE_NONSHARED
+ }
+};
+
+/*
+ * Set up static virtual mappings.
+ */
+static void __init qong_map_io(void)
+{
+ mxc_map_io();
+ iotable_init(qong_io_desc, ARRAY_SIZE(qong_io_desc));
+}
+
+/*
+ * Board specific initialization.
+ */
+static void __init mxc_board_init(void)
+{
+ mxc_init_imx_uart();
+ qong_init_nor_mtd();
+ qong_init_fpga();
+}
+
+static void __init qong_timer_init(void)
+{
+ mx31_clocks_init(26000000);
+}
+
+static struct sys_timer qong_timer = {
+ .init = qong_timer_init,
+};
+
+/*
+ * The following uses standard kernel macros defined in arch.h in order to
+ * initialize __mach_desc_QONG data structure.
+ */
+
+MACHINE_START(QONG, "Dave/DENX QongEVB-LITE")
+ /* Maintainer: DENX Software Engineering GmbH */
+ .phys_io = AIPS1_BASE_ADDR,
+ .io_pg_offst = ((AIPS1_BASE_ADDR_VIRT) >> 18) & 0xfffc,
+ .boot_params = PHYS_OFFSET + 0x100,
+ .map_io = qong_map_io,
+ .init_irq = mxc_init_irq,
+ .init_machine = mxc_board_init,
+ .timer = &qong_timer,
+MACHINE_END
git.openpandora.org / pandora-kernel.git / commitdiff