2 * Copyright (C) 2009 Ilya Yanok, Emcraft Systems Ltd, <yanok@emcraft.com>
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
15 #include <linux/types.h>
16 #include <linux/init.h>
17 #include <linux/kernel.h>
18 #include <linux/memory.h>
19 #include <linux/platform_device.h>
20 #include <linux/mtd/physmap.h>
21 #include <linux/mtd/nand.h>
22 #include <linux/gpio.h>
24 #include <mach/hardware.h>
25 #include <mach/irqs.h>
26 #include <asm/mach-types.h>
27 #include <asm/mach/arch.h>
28 #include <asm/mach/time.h>
29 #include <asm/mach/map.h>
30 #include <mach/common.h>
32 #include <asm/setup.h>
33 #include <mach/iomux-mx3.h>
35 #include "devices-imx31.h"
39 #define QONG_FPGA_VERSION(major, minor, rev) \
40 (((major & 0xF) << 12) | ((minor & 0xF) << 8) | (rev & 0xFF))
42 #define QONG_FPGA_BASEADDR MX31_CS1_BASE_ADDR
43 #define QONG_FPGA_PERIPH_SIZE (1 << 24)
45 #define QONG_FPGA_CTRL_BASEADDR QONG_FPGA_BASEADDR
46 #define QONG_FPGA_CTRL_SIZE 0x10
47 /* FPGA control registers */
48 #define QONG_FPGA_CTRL_VERSION 0x00
50 #define QONG_DNET_ID 1
51 #define QONG_DNET_BASEADDR \
52 (QONG_FPGA_BASEADDR + QONG_DNET_ID * QONG_FPGA_PERIPH_SIZE)
53 #define QONG_DNET_SIZE 0x00001000
55 #define QONG_FPGA_IRQ IOMUX_TO_IRQ(MX31_PIN_DTR_DCE1)
58 * This file contains the board-specific initialization routines.
61 static const struct imxuart_platform_data uart_pdata __initconst = {
62 .flags = IMXUART_HAVE_RTSCTS,
65 static int uart_pins[] = {
72 static inline void __init mxc_init_imx_uart(void)
74 mxc_iomux_setup_multiple_pins(uart_pins, ARRAY_SIZE(uart_pins),
76 imx31_add_imx_uart0(&uart_pdata);
79 static struct resource dnet_resources[] = {
81 .name = "dnet-memory",
82 .start = QONG_DNET_BASEADDR,
83 .end = QONG_DNET_BASEADDR + QONG_DNET_SIZE - 1,
84 .flags = IORESOURCE_MEM,
86 .start = QONG_FPGA_IRQ,
88 .flags = IORESOURCE_IRQ,
92 static struct platform_device dnet_device = {
95 .num_resources = ARRAY_SIZE(dnet_resources),
96 .resource = dnet_resources,
99 static int __init qong_init_dnet(void)
103 ret = platform_device_register(&dnet_device);
109 static struct physmap_flash_data qong_flash_data = {
113 static struct resource qong_flash_resource = {
114 .start = MX31_CS0_BASE_ADDR,
115 .end = MX31_CS0_BASE_ADDR + SZ_128M - 1,
116 .flags = IORESOURCE_MEM,
119 static struct platform_device qong_nor_mtd_device = {
120 .name = "physmap-flash",
123 .platform_data = &qong_flash_data,
125 .resource = &qong_flash_resource,
129 static void qong_init_nor_mtd(void)
131 (void)platform_device_register(&qong_nor_mtd_device);
135 * Hardware specific access to control-lines
137 static void qong_nand_cmd_ctrl(struct mtd_info *mtd, int cmd, unsigned int ctrl)
139 struct nand_chip *nand_chip = mtd->priv;
141 if (cmd == NAND_CMD_NONE)
145 writeb(cmd, nand_chip->IO_ADDR_W + (1 << 24));
147 writeb(cmd, nand_chip->IO_ADDR_W + (1 << 23));
151 * Read the Device Ready pin.
153 static int qong_nand_device_ready(struct mtd_info *mtd)
155 return gpio_get_value(IOMUX_TO_GPIO(MX31_PIN_NFRB));
158 static void qong_nand_select_chip(struct mtd_info *mtd, int chip)
161 gpio_set_value(IOMUX_TO_GPIO(MX31_PIN_NFCE_B), 0);
163 gpio_set_value(IOMUX_TO_GPIO(MX31_PIN_NFCE_B), 1);
166 static struct platform_nand_data qong_nand_data = {
173 .cmd_ctrl = qong_nand_cmd_ctrl,
174 .dev_ready = qong_nand_device_ready,
175 .select_chip = qong_nand_select_chip,
179 static struct resource qong_nand_resource = {
180 .start = MX31_CS3_BASE_ADDR,
181 .end = MX31_CS3_BASE_ADDR + SZ_32M - 1,
182 .flags = IORESOURCE_MEM,
185 static struct platform_device qong_nand_device = {
189 .platform_data = &qong_nand_data,
192 .resource = &qong_nand_resource,
195 static void __init qong_init_nand_mtd(void)
198 mx31_setup_weimcs(3, 0x00004f00, 0x20013b31, 0x00020800);
199 mxc_iomux_set_gpr(MUX_SDCTL_CSD1_SEL, true);
202 mxc_iomux_mode(IOMUX_MODE(MX31_PIN_NFCE_B, IOMUX_CONFIG_GPIO));
203 if (!gpio_request(IOMUX_TO_GPIO(MX31_PIN_NFCE_B), "nand_enable"))
204 gpio_direction_output(IOMUX_TO_GPIO(MX31_PIN_NFCE_B), 0);
207 mxc_iomux_mode(IOMUX_MODE(MX31_PIN_NFRB, IOMUX_CONFIG_GPIO));
208 if (!gpio_request(IOMUX_TO_GPIO(MX31_PIN_NFRB), "nand_rdy"))
209 gpio_direction_input(IOMUX_TO_GPIO(MX31_PIN_NFRB));
211 /* write protect pin */
212 mxc_iomux_mode(IOMUX_MODE(MX31_PIN_NFWP_B, IOMUX_CONFIG_GPIO));
213 if (!gpio_request(IOMUX_TO_GPIO(MX31_PIN_NFWP_B), "nand_wp"))
214 gpio_direction_input(IOMUX_TO_GPIO(MX31_PIN_NFWP_B));
216 platform_device_register(&qong_nand_device);
219 static void __init qong_init_fpga(void)
224 regs = ioremap(QONG_FPGA_CTRL_BASEADDR, QONG_FPGA_CTRL_SIZE);
226 printk(KERN_ERR "%s: failed to map registers, aborting.\n",
231 fpga_ver = readl(regs + QONG_FPGA_CTRL_VERSION);
233 printk(KERN_INFO "Qong FPGA version %d.%d.%d\n",
234 (fpga_ver & 0xF000) >> 12,
235 (fpga_ver & 0x0F00) >> 8, fpga_ver & 0x00FF);
236 if (fpga_ver < QONG_FPGA_VERSION(0, 8, 7)) {
237 printk(KERN_ERR "qong: Unexpected FPGA version, FPGA-based "
238 "devices won't be registered!\n");
242 /* register FPGA-based devices */
243 qong_init_nand_mtd();
248 * Board specific initialization.
250 static void __init mxc_board_init(void)
257 static void __init qong_timer_init(void)
259 mx31_clocks_init(26000000);
262 static struct sys_timer qong_timer = {
263 .init = qong_timer_init,
267 * The following uses standard kernel macros defined in arch.h in order to
268 * initialize __mach_desc_QONG data structure.
271 MACHINE_START(QONG, "Dave/DENX QongEVB-LITE")
272 /* Maintainer: DENX Software Engineering GmbH */
273 .phys_io = MX31_AIPS1_BASE_ADDR,
274 .io_pg_offst = (MX31_AIPS1_BASE_ADDR_VIRT >> 18) & 0xfffc,
275 .boot_params = MX3x_PHYS_OFFSET + 0x100,
276 .map_io = mx31_map_io,
277 .init_irq = mx31_init_irq,
278 .init_machine = mxc_board_init,
279 .timer = &qong_timer,