| /* |
| * arch/arm/mach-ep93xx/ts72xx.c |
| * Technologic Systems TS72xx SBC support. |
| * |
| * Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org> |
| * |
| * 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. |
| */ |
| |
| #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| |
| #include <linux/kernel.h> |
| #include <linux/init.h> |
| #include <linux/platform_device.h> |
| #include <linux/io.h> |
| #include <linux/m48t86.h> |
| #include <linux/mtd/nand.h> |
| #include <linux/mtd/partitions.h> |
| |
| #include <mach/hardware.h> |
| #include <mach/ts72xx.h> |
| |
| #include <asm/hardware/vic.h> |
| #include <asm/mach-types.h> |
| #include <asm/mach/map.h> |
| #include <asm/mach/arch.h> |
| |
| #include "soc.h" |
| |
| static struct map_desc ts72xx_io_desc[] __initdata = { |
| { |
| .virtual = (unsigned long)TS72XX_MODEL_VIRT_BASE, |
| .pfn = __phys_to_pfn(TS72XX_MODEL_PHYS_BASE), |
| .length = TS72XX_MODEL_SIZE, |
| .type = MT_DEVICE, |
| }, { |
| .virtual = (unsigned long)TS72XX_OPTIONS_VIRT_BASE, |
| .pfn = __phys_to_pfn(TS72XX_OPTIONS_PHYS_BASE), |
| .length = TS72XX_OPTIONS_SIZE, |
| .type = MT_DEVICE, |
| }, { |
| .virtual = (unsigned long)TS72XX_OPTIONS2_VIRT_BASE, |
| .pfn = __phys_to_pfn(TS72XX_OPTIONS2_PHYS_BASE), |
| .length = TS72XX_OPTIONS2_SIZE, |
| .type = MT_DEVICE, |
| }, { |
| .virtual = (unsigned long)TS72XX_RTC_INDEX_VIRT_BASE, |
| .pfn = __phys_to_pfn(TS72XX_RTC_INDEX_PHYS_BASE), |
| .length = TS72XX_RTC_INDEX_SIZE, |
| .type = MT_DEVICE, |
| }, { |
| .virtual = (unsigned long)TS72XX_RTC_DATA_VIRT_BASE, |
| .pfn = __phys_to_pfn(TS72XX_RTC_DATA_PHYS_BASE), |
| .length = TS72XX_RTC_DATA_SIZE, |
| .type = MT_DEVICE, |
| } |
| }; |
| |
| static void __init ts72xx_map_io(void) |
| { |
| ep93xx_map_io(); |
| iotable_init(ts72xx_io_desc, ARRAY_SIZE(ts72xx_io_desc)); |
| } |
| |
| |
| /************************************************************************* |
| * NAND flash |
| *************************************************************************/ |
| #define TS72XX_NAND_CONTROL_ADDR_LINE 22 /* 0xN0400000 */ |
| #define TS72XX_NAND_BUSY_ADDR_LINE 23 /* 0xN0800000 */ |
| |
| static void ts72xx_nand_hwcontrol(struct mtd_info *mtd, |
| int cmd, unsigned int ctrl) |
| { |
| struct nand_chip *chip = mtd->priv; |
| |
| if (ctrl & NAND_CTRL_CHANGE) { |
| void __iomem *addr = chip->IO_ADDR_R; |
| unsigned char bits; |
| |
| addr += (1 << TS72XX_NAND_CONTROL_ADDR_LINE); |
| |
| bits = __raw_readb(addr) & ~0x07; |
| bits |= (ctrl & NAND_NCE) << 2; /* bit 0 -> bit 2 */ |
| bits |= (ctrl & NAND_CLE); /* bit 1 -> bit 1 */ |
| bits |= (ctrl & NAND_ALE) >> 2; /* bit 2 -> bit 0 */ |
| |
| __raw_writeb(bits, addr); |
| } |
| |
| if (cmd != NAND_CMD_NONE) |
| __raw_writeb(cmd, chip->IO_ADDR_W); |
| } |
| |
| static int ts72xx_nand_device_ready(struct mtd_info *mtd) |
| { |
| struct nand_chip *chip = mtd->priv; |
| void __iomem *addr = chip->IO_ADDR_R; |
| |
| addr += (1 << TS72XX_NAND_BUSY_ADDR_LINE); |
| |
| return !!(__raw_readb(addr) & 0x20); |
| } |
| |
| #define TS72XX_BOOTROM_PART_SIZE (SZ_16K) |
| #define TS72XX_REDBOOT_PART_SIZE (SZ_2M + SZ_1M) |
| |
| static struct mtd_partition ts72xx_nand_parts[] = { |
| { |
| .name = "TS-BOOTROM", |
| .offset = 0, |
| .size = TS72XX_BOOTROM_PART_SIZE, |
| .mask_flags = MTD_WRITEABLE, /* force read-only */ |
| }, { |
| .name = "Linux", |
| .offset = MTDPART_OFS_RETAIN, |
| .size = TS72XX_REDBOOT_PART_SIZE, |
| /* leave so much for last partition */ |
| }, { |
| .name = "RedBoot", |
| .offset = MTDPART_OFS_APPEND, |
| .size = MTDPART_SIZ_FULL, |
| .mask_flags = MTD_WRITEABLE, /* force read-only */ |
| }, |
| }; |
| |
| static struct platform_nand_data ts72xx_nand_data = { |
| .chip = { |
| .nr_chips = 1, |
| .chip_offset = 0, |
| .chip_delay = 15, |
| .partitions = ts72xx_nand_parts, |
| .nr_partitions = ARRAY_SIZE(ts72xx_nand_parts), |
| }, |
| .ctrl = { |
| .cmd_ctrl = ts72xx_nand_hwcontrol, |
| .dev_ready = ts72xx_nand_device_ready, |
| }, |
| }; |
| |
| static struct resource ts72xx_nand_resource[] = { |
| { |
| .start = 0, /* filled in later */ |
| .end = 0, /* filled in later */ |
| .flags = IORESOURCE_MEM, |
| }, |
| }; |
| |
| static struct platform_device ts72xx_nand_flash = { |
| .name = "gen_nand", |
| .id = -1, |
| .dev.platform_data = &ts72xx_nand_data, |
| .resource = ts72xx_nand_resource, |
| .num_resources = ARRAY_SIZE(ts72xx_nand_resource), |
| }; |
| |
| |
| static void __init ts72xx_register_flash(void) |
| { |
| /* |
| * TS7200 has NOR flash all other TS72xx board have NAND flash. |
| */ |
| if (board_is_ts7200()) { |
| ep93xx_register_flash(2, EP93XX_CS6_PHYS_BASE, SZ_16M); |
| } else { |
| resource_size_t start; |
| |
| if (is_ts9420_installed()) |
| start = EP93XX_CS7_PHYS_BASE; |
| else |
| start = EP93XX_CS6_PHYS_BASE; |
| |
| ts72xx_nand_resource[0].start = start; |
| ts72xx_nand_resource[0].end = start + SZ_16M - 1; |
| |
| platform_device_register(&ts72xx_nand_flash); |
| } |
| } |
| |
| |
| static unsigned char ts72xx_rtc_readbyte(unsigned long addr) |
| { |
| __raw_writeb(addr, TS72XX_RTC_INDEX_VIRT_BASE); |
| return __raw_readb(TS72XX_RTC_DATA_VIRT_BASE); |
| } |
| |
| static void ts72xx_rtc_writebyte(unsigned char value, unsigned long addr) |
| { |
| __raw_writeb(addr, TS72XX_RTC_INDEX_VIRT_BASE); |
| __raw_writeb(value, TS72XX_RTC_DATA_VIRT_BASE); |
| } |
| |
| static struct m48t86_ops ts72xx_rtc_ops = { |
| .readbyte = ts72xx_rtc_readbyte, |
| .writebyte = ts72xx_rtc_writebyte, |
| }; |
| |
| static struct platform_device ts72xx_rtc_device = { |
| .name = "rtc-m48t86", |
| .id = -1, |
| .dev = { |
| .platform_data = &ts72xx_rtc_ops, |
| }, |
| .num_resources = 0, |
| }; |
| |
| static struct resource ts72xx_wdt_resources[] = { |
| { |
| .start = TS72XX_WDT_CONTROL_PHYS_BASE, |
| .end = TS72XX_WDT_CONTROL_PHYS_BASE + SZ_4K - 1, |
| .flags = IORESOURCE_MEM, |
| }, |
| { |
| .start = TS72XX_WDT_FEED_PHYS_BASE, |
| .end = TS72XX_WDT_FEED_PHYS_BASE + SZ_4K - 1, |
| .flags = IORESOURCE_MEM, |
| }, |
| }; |
| |
| static struct platform_device ts72xx_wdt_device = { |
| .name = "ts72xx-wdt", |
| .id = -1, |
| .num_resources = ARRAY_SIZE(ts72xx_wdt_resources), |
| .resource = ts72xx_wdt_resources, |
| }; |
| |
| static struct ep93xx_eth_data __initdata ts72xx_eth_data = { |
| .phy_id = 1, |
| }; |
| |
| static void __init ts72xx_init_machine(void) |
| { |
| ep93xx_init_devices(); |
| ts72xx_register_flash(); |
| platform_device_register(&ts72xx_rtc_device); |
| platform_device_register(&ts72xx_wdt_device); |
| |
| ep93xx_register_eth(&ts72xx_eth_data, 1); |
| } |
| |
| MACHINE_START(TS72XX, "Technologic Systems TS-72xx SBC") |
| /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */ |
| .atag_offset = 0x100, |
| .map_io = ts72xx_map_io, |
| .init_irq = ep93xx_init_irq, |
| .handle_irq = vic_handle_irq, |
| .timer = &ep93xx_timer, |
| .init_machine = ts72xx_init_machine, |
| .init_late = ep93xx_init_late, |
| .restart = ep93xx_restart, |
| MACHINE_END |