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339 lines
7.9 KiB
C
339 lines
7.9 KiB
C
/*
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* RouterBoard 500 Platform devices
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*
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* Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
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* Copyright (C) 2007 Florian Fainelli <florian@openwrt.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/ctype.h>
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#include <linux/string.h>
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#include <linux/platform_device.h>
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#include <linux/mtd/nand.h>
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#include <linux/mtd/mtd.h>
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#include <linux/mtd/partitions.h>
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#include <linux/gpio_keys.h>
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#include <linux/input.h>
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#include <asm/bootinfo.h>
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#include <asm/rc32434/rc32434.h>
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#include <asm/rc32434/dma.h>
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#include <asm/rc32434/dma_v.h>
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#include <asm/rc32434/eth.h>
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#include <asm/rc32434/rb.h>
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#define ETH0_DMA_RX_IRQ GROUP1_IRQ_BASE + 0
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#define ETH0_DMA_TX_IRQ GROUP1_IRQ_BASE + 1
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#define ETH0_RX_OVR_IRQ GROUP3_IRQ_BASE + 9
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#define ETH0_TX_UND_IRQ GROUP3_IRQ_BASE + 10
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#define ETH0_RX_DMA_ADDR (DMA0_PhysicalAddress + 0*DMA_CHAN_OFFSET)
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#define ETH0_TX_DMA_ADDR (DMA0_PhysicalAddress + 1*DMA_CHAN_OFFSET)
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/* NAND definitions */
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#define MEM32(x) *((volatile unsigned *) (x))
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#define GPIO_RDY (1 << 0x08)
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#define GPIO_WPX (1 << 0x09)
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#define GPIO_ALE (1 << 0x0a)
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#define GPIO_CLE (1 << 0x0b)
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extern char* board_type;
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static struct resource korina_dev0_res[] = {
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{
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.name = "korina_regs",
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.start = ETH0_PhysicalAddress,
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.end = ETH0_PhysicalAddress + sizeof(ETH_t),
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.flags = IORESOURCE_MEM,
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}, {
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.name = "korina_rx",
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.start = ETH0_DMA_RX_IRQ,
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.end = ETH0_DMA_RX_IRQ,
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.flags = IORESOURCE_IRQ
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}, {
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.name = "korina_tx",
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.start = ETH0_DMA_TX_IRQ,
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.end = ETH0_DMA_TX_IRQ,
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.flags = IORESOURCE_IRQ
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}, {
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.name = "korina_ovr",
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.start = ETH0_RX_OVR_IRQ,
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.end = ETH0_RX_OVR_IRQ,
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.flags = IORESOURCE_IRQ
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}, {
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.name = "korina_und",
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.start = ETH0_TX_UND_IRQ,
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.end = ETH0_TX_UND_IRQ,
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.flags = IORESOURCE_IRQ
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}, {
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.name = "korina_dma_rx",
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.start = ETH0_RX_DMA_ADDR,
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.end = ETH0_RX_DMA_ADDR + DMA_CHAN_OFFSET - 1,
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.flags = IORESOURCE_MEM,
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}, {
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.name = "korina_dma_tx",
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.start = ETH0_TX_DMA_ADDR,
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.end = ETH0_TX_DMA_ADDR + DMA_CHAN_OFFSET - 1,
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.flags = IORESOURCE_MEM,
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}
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};
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static struct korina_device korina_dev0_data = {
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.name = "korina0",
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.mac = {0xde, 0xca, 0xff, 0xc0, 0xff, 0xee}
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};
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static struct platform_device korina_dev0 = {
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.id = 0,
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.name = "korina",
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.dev.platform_data = &korina_dev0_data,
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.resource = korina_dev0_res,
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.num_resources = ARRAY_SIZE(korina_dev0_res),
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};
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#define CF_GPIO_NUM 13
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static struct resource cf_slot0_res[] = {
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{
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.name = "cf_membase",
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.flags = IORESOURCE_MEM
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}, {
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.name = "cf_irq",
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.start = (8 + 4 * 32 + CF_GPIO_NUM), /* 149 */
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.end = (8 + 4 * 32 + CF_GPIO_NUM),
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.flags = IORESOURCE_IRQ
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}
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};
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static struct cf_device cf_slot0_data = {
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.gpio_pin = 13
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};
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static struct platform_device cf_slot0 = {
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.id = 0,
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.name = "rb500-cf",
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.dev.platform_data = &cf_slot0_data,
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.resource = cf_slot0_res,
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.num_resources = ARRAY_SIZE(cf_slot0_res),
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};
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/* Resources and device for NAND. There is no data needed and no irqs, so just define the memory used. */
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/*
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* We need to use the OLD Yaffs-1 OOB layout, otherwise the RB bootloader
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* will not be able to find the kernel that we load. So set the oobinfo
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* when creating the partitions
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*/
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static struct nand_ecclayout rb500_nand_ecclayout = {
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.eccbytes = 6,
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.eccpos = { 8, 9, 10, 13, 14, 15 },
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.oobavail = 9,
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.oobfree = { { 0, 4 }, { 6, 2 }, { 11, 2 }, { 4, 1 } }
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};
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int rb500_dev_ready(struct mtd_info *mtd)
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{
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return MEM32(IDT434_REG_BASE + GPIOD) & GPIO_RDY;
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}
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void rb500_cmd_ctrl(struct mtd_info *mtd, int cmd, unsigned int ctrl)
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{
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struct nand_chip *chip = mtd->priv;
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unsigned char orbits, nandbits;
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if (ctrl & NAND_CTRL_CHANGE) {
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orbits = (ctrl & NAND_CLE) << 1;
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orbits |= (ctrl & NAND_ALE) >> 1;
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nandbits = (~ctrl & NAND_CLE) << 1;
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nandbits |= (~ctrl & NAND_ALE) >> 1;
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changeLatchU5(orbits, nandbits);
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}
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if (cmd != NAND_CMD_NONE)
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writeb(cmd, chip->IO_ADDR_W);
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}
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static struct resource nand_slot0_res[] = {
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[0] = {
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.name = "nand_membase",
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.flags = IORESOURCE_MEM
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}
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};
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struct platform_nand_data rb500_nand_data = {
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.ctrl.dev_ready = rb500_dev_ready,
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.ctrl.cmd_ctrl = rb500_cmd_ctrl,
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};
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static struct platform_device nand_slot0 = {
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.name = "gen_nand",
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.id = -1,
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.resource = nand_slot0_res,
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.num_resources = ARRAY_SIZE(nand_slot0_res),
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.dev.platform_data = &rb500_nand_data,
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};
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static struct mtd_partition rb500_partition_info[] = {
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{
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.name = "Routerboard NAND boot",
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.offset = 0,
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.size = 4 * 1024 * 1024,
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}, {
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.name = "rootfs",
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.offset = MTDPART_OFS_NXTBLK,
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.size = MTDPART_SIZ_FULL,
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}
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};
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static struct platform_device rb500_led = {
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.name = "rb500-led",
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.id = 0,
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};
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static struct gpio_keys_button rb500_gpio_btn[] = {
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{
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.gpio = 1,
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.code = BTN_0,
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.desc = "S1",
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.active_low = 1,
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}
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};
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static struct gpio_keys_platform_data rb500_gpio_btn_data = {
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.buttons = rb500_gpio_btn,
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.nbuttons = ARRAY_SIZE(rb500_gpio_btn),
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};
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static struct platform_device rb500_button = {
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.name = "gpio-keys",
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.id = -1,
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.dev = {
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.platform_data = &rb500_gpio_btn_data,
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}
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};
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static struct platform_device *rb500_devs[] = {
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&korina_dev0,
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&nand_slot0,
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&cf_slot0,
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&rb500_led,
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&rb500_button
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};
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static void __init parse_mac_addr(char *macstr)
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{
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int i, j;
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unsigned char result, value;
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for (i = 0; i < 6; i++) {
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result = 0;
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if (i != 5 && *(macstr + 2) != ':')
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return;
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for (j = 0; j < 2; j++) {
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if (isxdigit(*macstr)
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&& (value =
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isdigit(*macstr) ? *macstr -
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'0' : toupper(*macstr) - 'A' + 10) < 16) {
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result = result * 16 + value;
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macstr++;
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} else
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return;
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}
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macstr++;
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korina_dev0_data.mac[i] = result;
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}
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}
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/* DEVICE CONTROLLER 1 */
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#define CFG_DC_DEV1 (void*)0xb8010010
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#define CFG_DC_DEV2 (void*)0xb8010020
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#define CFG_DC_DEVBASE 0x0
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#define CFG_DC_DEVMASK 0x4
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#define CFG_DC_DEVC 0x8
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#define CFG_DC_DEVTC 0xC
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/* NAND definitions */
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#define NAND_CHIP_DELAY 25
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static int rb500_nand_fixup(struct mtd_info *mtd)
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{
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struct nand_chip *chip = mtd->priv;
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if (mtd->writesize == 512)
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chip->ecc.layout = &rb500_nand_ecclayout;
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return 0;
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}
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static void __init rb500_nand_setup(void)
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{
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switch (mips_machtype) {
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case MACH_MIKROTIK_RB532A:
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changeLatchU5(LO_FOFF | LO_CEX, LO_ULED | LO_ALE | LO_CLE | LO_WPX);
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break;
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default:
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changeLatchU5(LO_WPX | LO_FOFF | LO_CEX, LO_ULED | LO_ALE | LO_CLE);
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break;
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}
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/* Setup NAND specific settings */
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rb500_nand_data.chip.nr_chips = 1;
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rb500_nand_data.chip.nr_partitions = ARRAY_SIZE(rb500_partition_info);
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rb500_nand_data.chip.partitions = rb500_partition_info;
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rb500_nand_data.chip.chip_delay = NAND_CHIP_DELAY;
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rb500_nand_data.chip.options = NAND_NO_AUTOINCR;
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rb500_nand_data.chip.chip_fixup = &rb500_nand_fixup;
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}
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static int __init plat_setup_devices(void)
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{
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/* Look for the CF card reader */
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if (!readl(CFG_DC_DEV1 + CFG_DC_DEVMASK))
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rb500_devs[1] = NULL;
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else {
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cf_slot0_res[0].start =
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readl(CFG_DC_DEV1 + CFG_DC_DEVBASE);
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cf_slot0_res[0].end = cf_slot0_res[0].start + 0x1000;
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}
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/* Read the NAND resources from the device controller */
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nand_slot0_res[0].start = readl(CFG_DC_DEV2 + CFG_DC_DEVBASE);
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nand_slot0_res[0].end = nand_slot0_res[0].start + 0x1000;
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/* Initialise the NAND device */
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rb500_nand_setup();
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return platform_add_devices(rb500_devs, ARRAY_SIZE(rb500_devs));
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}
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static int __init setup_kmac(char *s)
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{
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printk("korina mac = %s\n", s);
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parse_mac_addr(s);
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return 0;
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}
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__setup("kmac=", setup_kmac);
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arch_initcall(plat_setup_devices);
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