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294 lines
7.2 KiB
294 lines
7.2 KiB
/*
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* linux/arch/arm/mach-nomadik/board-8815nhk.c
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*
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* Copyright (C) STMicroelectronics
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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 version 2, as
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* published by the Free Software Foundation.
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*
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* NHK15 board specifc driver definition
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*/
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#include <linux/types.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/platform_device.h>
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#include <linux/amba/bus.h>
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#include <linux/interrupt.h>
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#include <linux/gpio.h>
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#include <linux/mtd/mtd.h>
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#include <linux/mtd/nand.h>
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#include <linux/mtd/onenand.h>
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#include <linux/mtd/partitions.h>
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#include <linux/io.h>
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#include <asm/sizes.h>
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#include <asm/mach-types.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/irq.h>
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#include <asm/mach/flash.h>
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#include <plat/mtu.h>
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#include <mach/setup.h>
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#include <mach/nand.h>
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#include <mach/fsmc.h>
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#include "clock.h"
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/* Initial value for SRC control register: all timers use MXTAL/8 source */
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#define SRC_CR_INIT_MASK 0x00007fff
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#define SRC_CR_INIT_VAL 0x2aaa8000
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/* These addresses span 16MB, so use three individual pages */
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static struct resource nhk8815_nand_resources[] = {
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{
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.name = "nand_addr",
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.start = NAND_IO_ADDR,
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.end = NAND_IO_ADDR + 0xfff,
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.flags = IORESOURCE_MEM,
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}, {
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.name = "nand_cmd",
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.start = NAND_IO_CMD,
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.end = NAND_IO_CMD + 0xfff,
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.flags = IORESOURCE_MEM,
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}, {
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.name = "nand_data",
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.start = NAND_IO_DATA,
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.end = NAND_IO_DATA + 0xfff,
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.flags = IORESOURCE_MEM,
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}
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};
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static int nhk8815_nand_init(void)
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{
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/* FSMC setup for nand chip select (8-bit nand in 8815NHK) */
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writel(0x0000000E, FSMC_PCR(0));
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writel(0x000D0A00, FSMC_PMEM(0));
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writel(0x00100A00, FSMC_PATT(0));
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/* enable access to the chip select area */
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writel(readl(FSMC_PCR(0)) | 0x04, FSMC_PCR(0));
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return 0;
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}
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/*
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* These partitions are the same as those used in the 2.6.20 release
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* shipped by the vendor; the first two partitions are mandated
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* by the boot ROM, and the bootloader area is somehow oversized...
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*/
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static struct mtd_partition nhk8815_partitions[] = {
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{
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.name = "X-Loader(NAND)",
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.offset = 0,
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.size = SZ_256K,
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}, {
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.name = "MemInit(NAND)",
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.offset = MTDPART_OFS_APPEND,
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.size = SZ_256K,
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}, {
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.name = "BootLoader(NAND)",
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.offset = MTDPART_OFS_APPEND,
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.size = SZ_2M,
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}, {
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.name = "Kernel zImage(NAND)",
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.offset = MTDPART_OFS_APPEND,
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.size = 3 * SZ_1M,
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}, {
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.name = "Root Filesystem(NAND)",
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.offset = MTDPART_OFS_APPEND,
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.size = 22 * SZ_1M,
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}, {
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.name = "User Filesystem(NAND)",
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.offset = MTDPART_OFS_APPEND,
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.size = MTDPART_SIZ_FULL,
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}
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};
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static struct nomadik_nand_platform_data nhk8815_nand_data = {
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.parts = nhk8815_partitions,
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.nparts = ARRAY_SIZE(nhk8815_partitions),
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.options = NAND_COPYBACK | NAND_CACHEPRG | NAND_NO_PADDING \
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| NAND_NO_READRDY | NAND_NO_AUTOINCR,
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.init = nhk8815_nand_init,
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};
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static struct platform_device nhk8815_nand_device = {
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.name = "nomadik_nand",
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.dev = {
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.platform_data = &nhk8815_nand_data,
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},
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.resource = nhk8815_nand_resources,
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.num_resources = ARRAY_SIZE(nhk8815_nand_resources),
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};
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/* These are the partitions for the OneNand device, different from above */
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static struct mtd_partition nhk8815_onenand_partitions[] = {
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{
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.name = "X-Loader(OneNAND)",
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.offset = 0,
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.size = SZ_256K,
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}, {
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.name = "MemInit(OneNAND)",
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.offset = MTDPART_OFS_APPEND,
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.size = SZ_256K,
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}, {
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.name = "BootLoader(OneNAND)",
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.offset = MTDPART_OFS_APPEND,
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.size = SZ_2M-SZ_256K,
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}, {
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.name = "SysImage(OneNAND)",
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.offset = MTDPART_OFS_APPEND,
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.size = 4 * SZ_1M,
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}, {
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.name = "Root Filesystem(OneNAND)",
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.offset = MTDPART_OFS_APPEND,
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.size = 22 * SZ_1M,
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}, {
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.name = "User Filesystem(OneNAND)",
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.offset = MTDPART_OFS_APPEND,
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.size = MTDPART_SIZ_FULL,
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}
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};
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static struct onenand_platform_data nhk8815_onenand_data = {
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.parts = nhk8815_onenand_partitions,
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.nr_parts = ARRAY_SIZE(nhk8815_onenand_partitions),
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};
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static struct resource nhk8815_onenand_resource[] = {
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{
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.start = 0x30000000,
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.end = 0x30000000 + SZ_128K - 1,
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.flags = IORESOURCE_MEM,
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},
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};
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static struct platform_device nhk8815_onenand_device = {
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.name = "onenand-flash",
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.id = -1,
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.dev = {
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.platform_data = &nhk8815_onenand_data,
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},
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.resource = nhk8815_onenand_resource,
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.num_resources = ARRAY_SIZE(nhk8815_onenand_resource),
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};
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static void __init nhk8815_onenand_init(void)
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{
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#ifdef CONFIG_MTD_ONENAND
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/* Set up SMCS0 for OneNand */
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writel(0x000030db, FSMC_BCR(0));
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writel(0x02100551, FSMC_BTR(0));
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#endif
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}
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#define __MEM_4K_RESOURCE(x) \
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.res = {.start = (x), .end = (x) + SZ_4K - 1, .flags = IORESOURCE_MEM}
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static struct amba_device uart0_device = {
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.dev = { .init_name = "uart0" },
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__MEM_4K_RESOURCE(NOMADIK_UART0_BASE),
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.irq = {IRQ_UART0, NO_IRQ},
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};
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static struct amba_device uart1_device = {
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.dev = { .init_name = "uart1" },
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__MEM_4K_RESOURCE(NOMADIK_UART1_BASE),
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.irq = {IRQ_UART1, NO_IRQ},
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};
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static struct amba_device *amba_devs[] __initdata = {
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&uart0_device,
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&uart1_device,
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};
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/* We have a fixed clock alone, by now */
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static struct clk nhk8815_clk_48 = {
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.rate = 48*1000*1000,
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};
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static struct resource nhk8815_eth_resources[] = {
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{
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.name = "smc91x-regs",
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.start = 0x34000000 + 0x300,
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.end = 0x34000000 + SZ_64K - 1,
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.flags = IORESOURCE_MEM,
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}, {
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.start = NOMADIK_GPIO_TO_IRQ(115),
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.end = NOMADIK_GPIO_TO_IRQ(115),
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.flags = IORESOURCE_IRQ | IRQF_TRIGGER_RISING,
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}
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};
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static struct platform_device nhk8815_eth_device = {
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.name = "smc91x",
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.resource = nhk8815_eth_resources,
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.num_resources = ARRAY_SIZE(nhk8815_eth_resources),
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};
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static int __init nhk8815_eth_init(void)
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{
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int gpio_nr = 115; /* hardwired in the board */
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int err;
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err = gpio_request(gpio_nr, "eth_irq");
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if (!err) err = nmk_gpio_set_mode(gpio_nr, NMK_GPIO_ALT_GPIO);
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if (!err) err = gpio_direction_input(gpio_nr);
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if (err)
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pr_err("Error %i in %s\n", err, __func__);
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return err;
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}
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device_initcall(nhk8815_eth_init);
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static struct platform_device *nhk8815_platform_devices[] __initdata = {
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&nhk8815_nand_device,
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&nhk8815_onenand_device,
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&nhk8815_eth_device,
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/* will add more devices */
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};
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static void __init nomadik_timer_init(void)
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{
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u32 src_cr;
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/* Configure timer sources in "system reset controller" ctrl reg */
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src_cr = readl(io_p2v(NOMADIK_SRC_BASE));
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src_cr &= SRC_CR_INIT_MASK;
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src_cr |= SRC_CR_INIT_VAL;
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writel(src_cr, io_p2v(NOMADIK_SRC_BASE));
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/* Save global pointer to mtu, used by platform timer code */
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mtu_base = io_p2v(NOMADIK_MTU0_BASE);
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nmdk_timer_init();
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}
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static struct sys_timer nomadik_timer = {
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.init = nomadik_timer_init,
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};
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static void __init nhk8815_platform_init(void)
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{
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int i;
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cpu8815_platform_init();
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nhk8815_onenand_init();
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platform_add_devices(nhk8815_platform_devices,
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ARRAY_SIZE(nhk8815_platform_devices));
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for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
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nmdk_clk_create(&nhk8815_clk_48, amba_devs[i]->dev.init_name);
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amba_device_register(amba_devs[i], &iomem_resource);
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}
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}
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MACHINE_START(NOMADIK, "NHK8815")
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/* Maintainer: ST MicroElectronics */
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.phys_io = NOMADIK_UART0_BASE,
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.io_pg_offst = (IO_ADDRESS(NOMADIK_UART0_BASE) >> 18) & 0xfffc,
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.boot_params = 0x100,
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.map_io = cpu8815_map_io,
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.init_irq = cpu8815_init_irq,
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.timer = &nomadik_timer,
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.init_machine = nhk8815_platform_init,
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MACHINE_END
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