diff options
Diffstat (limited to 'arch/arm/mach-s3c2410/mach-bast.c')
-rw-r--r-- | arch/arm/mach-s3c2410/mach-bast.c | 409 |
1 files changed, 409 insertions, 0 deletions
diff --git a/arch/arm/mach-s3c2410/mach-bast.c b/arch/arm/mach-s3c2410/mach-bast.c new file mode 100644 index 00000000000..3bb97eb6e69 --- /dev/null +++ b/arch/arm/mach-s3c2410/mach-bast.c @@ -0,0 +1,409 @@ +/* linux/arch/arm/mach-s3c2410/mach-bast.c + * + * Copyright (c) 2003-2005 Simtec Electronics + * Ben Dooks <ben@simtec.co.uk> + * + * http://www.simtec.co.uk/products/EB2410ITX/ + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * Modifications: + * 14-Sep-2004 BJD USB power control + * 20-Aug-2004 BJD Added s3c2410_board struct + * 18-Aug-2004 BJD Added platform devices from default set + * 16-May-2003 BJD Created initial version + * 16-Aug-2003 BJD Fixed header files and copyright, added URL + * 05-Sep-2003 BJD Moved to v2.6 kernel + * 06-Jan-2003 BJD Updates for <arch/map.h> + * 18-Jan-2003 BJD Added serial port configuration + * 05-Oct-2004 BJD Power management code + * 04-Nov-2004 BJD Updated serial port clocks + * 04-Jan-2005 BJD New uart init call + * 10-Jan-2005 BJD Removed include of s3c2410.h + * 14-Jan-2005 BJD Add support for muitlple NAND devices + * 03-Mar-2005 BJD Ensured that bast-cpld.h is included + * 10-Mar-2005 LCVR Changed S3C2410_VA to S3C24XX_VA + * 14-Mar-2006 BJD Updated for __iomem changes +*/ + +#include <linux/kernel.h> +#include <linux/types.h> +#include <linux/interrupt.h> +#include <linux/list.h> +#include <linux/timer.h> +#include <linux/init.h> +#include <linux/device.h> + +#include <asm/mach/arch.h> +#include <asm/mach/map.h> +#include <asm/mach/irq.h> + +#include <asm/arch/bast-map.h> +#include <asm/arch/bast-irq.h> +#include <asm/arch/bast-cpld.h> + +#include <asm/hardware.h> +#include <asm/io.h> +#include <asm/irq.h> +#include <asm/mach-types.h> + +//#include <asm/debug-ll.h> +#include <asm/arch/regs-serial.h> +#include <asm/arch/regs-gpio.h> +#include <asm/arch/regs-mem.h> +#include <asm/arch/nand.h> + +#include <linux/mtd/mtd.h> +#include <linux/mtd/nand.h> +#include <linux/mtd/nand_ecc.h> +#include <linux/mtd/partitions.h> + +#include "clock.h" +#include "devs.h" +#include "cpu.h" +#include "usb-simtec.h" +#include "pm.h" + +#define COPYRIGHT ", (c) 2004-2005 Simtec Electronics" + +/* macros for virtual address mods for the io space entries */ +#define VA_C5(item) ((unsigned long)(item) + BAST_VAM_CS5) +#define VA_C4(item) ((unsigned long)(item) + BAST_VAM_CS4) +#define VA_C3(item) ((unsigned long)(item) + BAST_VAM_CS3) +#define VA_C2(item) ((unsigned long)(item) + BAST_VAM_CS2) + +/* macros to modify the physical addresses for io space */ + +#define PA_CS2(item) ((item) + S3C2410_CS2) +#define PA_CS3(item) ((item) + S3C2410_CS3) +#define PA_CS4(item) ((item) + S3C2410_CS4) +#define PA_CS5(item) ((item) + S3C2410_CS5) + +static struct map_desc bast_iodesc[] __initdata = { + /* ISA IO areas */ + + { (u32)S3C24XX_VA_ISA_BYTE, PA_CS2(BAST_PA_ISAIO), SZ_16M, MT_DEVICE }, + { (u32)S3C24XX_VA_ISA_WORD, PA_CS3(BAST_PA_ISAIO), SZ_16M, MT_DEVICE }, + + /* we could possibly compress the next set down into a set of smaller tables + * pagetables, but that would mean using an L2 section, and it still means + * we cannot actually feed the same register to an LDR due to 16K spacing + */ + + /* bast CPLD control registers, and external interrupt controls */ + { (u32)BAST_VA_CTRL1, BAST_PA_CTRL1, SZ_1M, MT_DEVICE }, + { (u32)BAST_VA_CTRL2, BAST_PA_CTRL2, SZ_1M, MT_DEVICE }, + { (u32)BAST_VA_CTRL3, BAST_PA_CTRL3, SZ_1M, MT_DEVICE }, + { (u32)BAST_VA_CTRL4, BAST_PA_CTRL4, SZ_1M, MT_DEVICE }, + + /* PC104 IRQ mux */ + { (u32)BAST_VA_PC104_IRQREQ, BAST_PA_PC104_IRQREQ, SZ_1M, MT_DEVICE }, + { (u32)BAST_VA_PC104_IRQRAW, BAST_PA_PC104_IRQRAW, SZ_1M, MT_DEVICE }, + { (u32)BAST_VA_PC104_IRQMASK, BAST_PA_PC104_IRQMASK, SZ_1M, MT_DEVICE }, + + /* peripheral space... one for each of fast/slow/byte/16bit */ + /* note, ide is only decoded in word space, even though some registers + * are only 8bit */ + + /* slow, byte */ + { VA_C2(BAST_VA_ISAIO), PA_CS2(BAST_PA_ISAIO), SZ_16M, MT_DEVICE }, + { VA_C2(BAST_VA_ISAMEM), PA_CS2(BAST_PA_ISAMEM), SZ_16M, MT_DEVICE }, + { VA_C2(BAST_VA_ASIXNET), PA_CS3(BAST_PA_ASIXNET), SZ_1M, MT_DEVICE }, + { VA_C2(BAST_VA_SUPERIO), PA_CS2(BAST_PA_SUPERIO), SZ_1M, MT_DEVICE }, + { VA_C2(BAST_VA_DM9000), PA_CS2(BAST_PA_DM9000), SZ_1M, MT_DEVICE }, + { VA_C2(BAST_VA_IDEPRI), PA_CS3(BAST_PA_IDEPRI), SZ_1M, MT_DEVICE }, + { VA_C2(BAST_VA_IDESEC), PA_CS3(BAST_PA_IDESEC), SZ_1M, MT_DEVICE }, + { VA_C2(BAST_VA_IDEPRIAUX), PA_CS3(BAST_PA_IDEPRIAUX), SZ_1M, MT_DEVICE }, + { VA_C2(BAST_VA_IDESECAUX), PA_CS3(BAST_PA_IDESECAUX), SZ_1M, MT_DEVICE }, + + /* slow, word */ + { VA_C3(BAST_VA_ISAIO), PA_CS3(BAST_PA_ISAIO), SZ_16M, MT_DEVICE }, + { VA_C3(BAST_VA_ISAMEM), PA_CS3(BAST_PA_ISAMEM), SZ_16M, MT_DEVICE }, + { VA_C3(BAST_VA_ASIXNET), PA_CS3(BAST_PA_ASIXNET), SZ_1M, MT_DEVICE }, + { VA_C3(BAST_VA_SUPERIO), PA_CS3(BAST_PA_SUPERIO), SZ_1M, MT_DEVICE }, + { VA_C3(BAST_VA_DM9000), PA_CS3(BAST_PA_DM9000), SZ_1M, MT_DEVICE }, + { VA_C3(BAST_VA_IDEPRI), PA_CS3(BAST_PA_IDEPRI), SZ_1M, MT_DEVICE }, + { VA_C3(BAST_VA_IDESEC), PA_CS3(BAST_PA_IDESEC), SZ_1M, MT_DEVICE }, + { VA_C3(BAST_VA_IDEPRIAUX), PA_CS3(BAST_PA_IDEPRIAUX), SZ_1M, MT_DEVICE }, + { VA_C3(BAST_VA_IDESECAUX), PA_CS3(BAST_PA_IDESECAUX), SZ_1M, MT_DEVICE }, + + /* fast, byte */ + { VA_C4(BAST_VA_ISAIO), PA_CS4(BAST_PA_ISAIO), SZ_16M, MT_DEVICE }, + { VA_C4(BAST_VA_ISAMEM), PA_CS4(BAST_PA_ISAMEM), SZ_16M, MT_DEVICE }, + { VA_C4(BAST_VA_ASIXNET), PA_CS5(BAST_PA_ASIXNET), SZ_1M, MT_DEVICE }, + { VA_C4(BAST_VA_SUPERIO), PA_CS4(BAST_PA_SUPERIO), SZ_1M, MT_DEVICE }, + { VA_C4(BAST_VA_DM9000), PA_CS4(BAST_PA_DM9000), SZ_1M, MT_DEVICE }, + { VA_C4(BAST_VA_IDEPRI), PA_CS5(BAST_PA_IDEPRI), SZ_1M, MT_DEVICE }, + { VA_C4(BAST_VA_IDESEC), PA_CS5(BAST_PA_IDESEC), SZ_1M, MT_DEVICE }, + { VA_C4(BAST_VA_IDEPRIAUX), PA_CS5(BAST_PA_IDEPRIAUX), SZ_1M, MT_DEVICE }, + { VA_C4(BAST_VA_IDESECAUX), PA_CS5(BAST_PA_IDESECAUX), SZ_1M, MT_DEVICE }, + + /* fast, word */ + { VA_C5(BAST_VA_ISAIO), PA_CS5(BAST_PA_ISAIO), SZ_16M, MT_DEVICE }, + { VA_C5(BAST_VA_ISAMEM), PA_CS5(BAST_PA_ISAMEM), SZ_16M, MT_DEVICE }, + { VA_C5(BAST_VA_ASIXNET), PA_CS5(BAST_PA_ASIXNET), SZ_1M, MT_DEVICE }, + { VA_C5(BAST_VA_SUPERIO), PA_CS5(BAST_PA_SUPERIO), SZ_1M, MT_DEVICE }, + { VA_C5(BAST_VA_DM9000), PA_CS5(BAST_PA_DM9000), SZ_1M, MT_DEVICE }, + { VA_C5(BAST_VA_IDEPRI), PA_CS5(BAST_PA_IDEPRI), SZ_1M, MT_DEVICE }, + { VA_C5(BAST_VA_IDESEC), PA_CS5(BAST_PA_IDESEC), SZ_1M, MT_DEVICE }, + { VA_C5(BAST_VA_IDEPRIAUX), PA_CS5(BAST_PA_IDEPRIAUX), SZ_1M, MT_DEVICE }, + { VA_C5(BAST_VA_IDESECAUX), PA_CS5(BAST_PA_IDESECAUX), SZ_1M, MT_DEVICE }, +}; + +#define UCON S3C2410_UCON_DEFAULT | S3C2410_UCON_UCLK +#define ULCON S3C2410_LCON_CS8 | S3C2410_LCON_PNONE | S3C2410_LCON_STOPB +#define UFCON S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE + +static struct s3c24xx_uart_clksrc bast_serial_clocks[] = { + [0] = { + .name = "uclk", + .divisor = 1, + .min_baud = 0, + .max_baud = 0, + }, + [1] = { + .name = "pclk", + .divisor = 1, + .min_baud = 0, + .max_baud = 0. + } +}; + + +static struct s3c2410_uartcfg bast_uartcfgs[] = { + [0] = { + .hwport = 0, + .flags = 0, + .ucon = UCON, + .ulcon = ULCON, + .ufcon = UFCON, + .clocks = bast_serial_clocks, + .clocks_size = ARRAY_SIZE(bast_serial_clocks) + }, + [1] = { + .hwport = 1, + .flags = 0, + .ucon = UCON, + .ulcon = ULCON, + .ufcon = UFCON, + .clocks = bast_serial_clocks, + .clocks_size = ARRAY_SIZE(bast_serial_clocks) + }, + /* port 2 is not actually used */ + [2] = { + .hwport = 2, + .flags = 0, + .ucon = UCON, + .ulcon = ULCON, + .ufcon = UFCON, + .clocks = bast_serial_clocks, + .clocks_size = ARRAY_SIZE(bast_serial_clocks) + } +}; + +/* NOR Flash on BAST board */ + +static struct resource bast_nor_resource[] = { + [0] = { + .start = S3C2410_CS1 + 0x4000000, + .end = S3C2410_CS1 + 0x4000000 + (32*1024*1024) - 1, + .flags = IORESOURCE_MEM, + } +}; + +static struct platform_device bast_device_nor = { + .name = "bast-nor", + .id = -1, + .num_resources = ARRAY_SIZE(bast_nor_resource), + .resource = bast_nor_resource, +}; + +/* NAND Flash on BAST board */ + + +static int smartmedia_map[] = { 0 }; +static int chip0_map[] = { 1 }; +static int chip1_map[] = { 2 }; +static int chip2_map[] = { 3 }; + +struct mtd_partition bast_default_nand_part[] = { + [0] = { + .name = "Boot Agent", + .size = SZ_16K, + .offset = 0 + }, + [1] = { + .name = "/boot", + .size = SZ_4M - SZ_16K, + .offset = SZ_16K, + }, + [2] = { + .name = "user", + .offset = SZ_4M, + .size = MTDPART_SIZ_FULL, + } +}; + +/* the bast has 4 selectable slots for nand-flash, the three + * on-board chip areas, as well as the external SmartMedia + * slot. + * + * Note, there is no current hot-plug support for the SmartMedia + * socket. +*/ + +static struct s3c2410_nand_set bast_nand_sets[] = { + [0] = { + .name = "SmartMedia", + .nr_chips = 1, + .nr_map = smartmedia_map, + .nr_partitions = ARRAY_SIZE(bast_default_nand_part), + .partitions = bast_default_nand_part + }, + [1] = { + .name = "chip0", + .nr_chips = 1, + .nr_map = chip0_map, + .nr_partitions = ARRAY_SIZE(bast_default_nand_part), + .partitions = bast_default_nand_part + }, + [2] = { + .name = "chip1", + .nr_chips = 1, + .nr_map = chip1_map, + .nr_partitions = ARRAY_SIZE(bast_default_nand_part), + .partitions = bast_default_nand_part + }, + [3] = { + .name = "chip2", + .nr_chips = 1, + .nr_map = chip2_map, + .nr_partitions = ARRAY_SIZE(bast_default_nand_part), + .partitions = bast_default_nand_part + } +}; + +static void bast_nand_select(struct s3c2410_nand_set *set, int slot) +{ + unsigned int tmp; + + slot = set->nr_map[slot] & 3; + + pr_debug("bast_nand: selecting slot %d (set %p,%p)\n", + slot, set, set->nr_map); + + tmp = __raw_readb(BAST_VA_CTRL2); + tmp &= BAST_CPLD_CTLR2_IDERST; + tmp |= slot; + tmp |= BAST_CPLD_CTRL2_WNAND; + + pr_debug("bast_nand: ctrl2 now %02x\n", tmp); + + __raw_writeb(tmp, BAST_VA_CTRL2); +} + +static struct s3c2410_platform_nand bast_nand_info = { + .tacls = 80, + .twrph0 = 80, + .twrph1 = 80, + .nr_sets = ARRAY_SIZE(bast_nand_sets), + .sets = bast_nand_sets, + .select_chip = bast_nand_select, +}; + + +/* Standard BAST devices */ + +static struct platform_device *bast_devices[] __initdata = { + &s3c_device_usb, + &s3c_device_lcd, + &s3c_device_wdt, + &s3c_device_i2c, + &s3c_device_iis, + &s3c_device_rtc, + &s3c_device_nand, + &bast_device_nor +}; + +static struct clk *bast_clocks[] = { + &s3c24xx_dclk0, + &s3c24xx_dclk1, + &s3c24xx_clkout0, + &s3c24xx_clkout1, + &s3c24xx_uclk, +}; + +static struct s3c24xx_board bast_board __initdata = { + .devices = bast_devices, + .devices_count = ARRAY_SIZE(bast_devices), + .clocks = bast_clocks, + .clocks_count = ARRAY_SIZE(bast_clocks) +}; + +void __init bast_map_io(void) +{ + /* initialise the clocks */ + + s3c24xx_dclk0.parent = NULL; + s3c24xx_dclk0.rate = 12*1000*1000; + + s3c24xx_dclk1.parent = NULL; + s3c24xx_dclk1.rate = 24*1000*1000; + + s3c24xx_clkout0.parent = &s3c24xx_dclk0; + s3c24xx_clkout1.parent = &s3c24xx_dclk1; + + s3c24xx_uclk.parent = &s3c24xx_clkout1; + + s3c_device_nand.dev.platform_data = &bast_nand_info; + + s3c24xx_init_io(bast_iodesc, ARRAY_SIZE(bast_iodesc)); + s3c24xx_init_clocks(0); + s3c24xx_init_uarts(bast_uartcfgs, ARRAY_SIZE(bast_uartcfgs)); + s3c24xx_set_board(&bast_board); + usb_simtec_init(); +} + +void __init bast_init_irq(void) +{ + s3c24xx_init_irq(); +} + +#ifdef CONFIG_PM + +/* bast_init_machine + * + * enable the power management functions for the EB2410ITX +*/ + +static __init void bast_init_machine(void) +{ + unsigned long gstatus4; + + printk(KERN_INFO "BAST Power Manangement" COPYRIGHT "\n"); + + gstatus4 = (__raw_readl(S3C2410_BANKCON7) & 0x3) << 30; + gstatus4 |= (__raw_readl(S3C2410_BANKCON6) & 0x3) << 28; + gstatus4 |= (__raw_readl(S3C2410_BANKSIZE) & S3C2410_BANKSIZE_MASK); + + __raw_writel(gstatus4, S3C2410_GSTATUS4); + + s3c2410_pm_init(); +} + +#else +#define bast_init_machine NULL +#endif + + +MACHINE_START(BAST, "Simtec-BAST") + MAINTAINER("Ben Dooks <ben@simtec.co.uk>") + BOOT_MEM(S3C2410_SDRAM_PA, S3C2410_PA_UART, (u32)S3C24XX_VA_UART) + BOOT_PARAMS(S3C2410_SDRAM_PA + 0x100) + MAPIO(bast_map_io) + INITIRQ(bast_init_irq) + .init_machine = bast_init_machine, + .timer = &s3c24xx_timer, +MACHINE_END |