[ARM] 3327/1: S3C2410 - add osiris machine support

Patch from Ben Dooks

Support for Simtec IM2440D20 CPU modules (Osiris)

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

3 files changed, 298 insertions, 0 deletions

diff --git a/arch/arm/mach-s3c2410/Kconfig b/arch/arm/mach-s3c2410/Kconfig
index 0b9d7ca49ec1..ed07c4149d82 100644
--- a/arch/arm/mach-s3c2410/Kconfig
+++ b/arch/arm/mach-s3c2410/Kconfig
@@ -9,6 +9,13 @@ config MACH_ANUBIS
 	  Say Y gere if you are using the Simtec Electronics ANUBIS
 	  development system
 
+config MACH_OSIRIS
+	bool "Simtec IM2440D20 (OSIRIS) module"
+	select CPU_S3C2440
+	help
+	  Say Y here if you are using the Simtec IM2440D20 module, also
+	  known as the Osiris.
+
 config ARCH_BAST
 	bool "Simtec Electronics BAST (EB2410ITX)"
 	select CPU_S3C2410
diff --git a/arch/arm/mach-s3c2410/Makefile b/arch/arm/mach-s3c2410/Makefile
index 1217bf00309c..1b3b476e5637 100644
--- a/arch/arm/mach-s3c2410/Makefile
+++ b/arch/arm/mach-s3c2410/Makefile
@@ -38,6 +38,7 @@ obj-$(CONFIG_BAST_PC104_IRQ)	+= bast-irq.o
 # machine specific support
 
 obj-$(CONFIG_MACH_ANUBIS)	+= mach-anubis.o
+obj-$(CONFIG_MACH_OSIRIS)	+= mach-osiris.o
 obj-$(CONFIG_ARCH_BAST)		+= mach-bast.o usb-simtec.o
 obj-$(CONFIG_ARCH_H1940)	+= mach-h1940.o
 obj-$(CONFIG_MACH_N30)		+= mach-n30.o
diff --git a/arch/arm/mach-s3c2410/mach-osiris.c b/arch/arm/mach-s3c2410/mach-osiris.c
new file mode 100644
index 000000000000..72083e645e77
--- /dev/null
+++ b/arch/arm/mach-s3c2410/mach-osiris.c
@@ -0,0 +1,290 @@
+/* linux/arch/arm/mach-s3c2410/mach-osiris.c
+ *
+ * Copyright (c) 2005 Simtec Electronics
+ *	http://armlinux.simtec.co.uk/
+ *	Ben Dooks <ben@simtec.co.uk>
+ *
+ * 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.
+*/
+
+#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/osiris-map.h>
+#include <asm/arch/osiris-cpld.h>
+
+#include <asm/hardware.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/mach-types.h>
+
+#include <asm/arch/regs-serial.h>
+#include <asm/arch/regs-gpio.h>
+#include <asm/arch/regs-mem.h>
+#include <asm/arch/regs-lcd.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"
+
+/* onboard perihpheral map */
+
+static struct map_desc osiris_iodesc[] __initdata = {
+  /* ISA IO areas (may be over-written later) */
+
+  {
+	  .virtual	= (u32)S3C24XX_VA_ISA_BYTE,
+	  .pfn		= __phys_to_pfn(S3C2410_CS5),
+	  .length	= SZ_16M,
+	  .type		= MT_DEVICE,
+  }, {
+	  .virtual	= (u32)S3C24XX_VA_ISA_WORD,
+	  .pfn		= __phys_to_pfn(S3C2410_CS5),
+	  .length	= SZ_16M,
+	  .type		= MT_DEVICE,
+  },
+
+  /* CPLD control registers */
+
+  {
+	  .virtual	= (u32)OSIRIS_VA_CTRL1,
+	  .pfn		= __phys_to_pfn(OSIRIS_PA_CTRL1),
+	  .length	= SZ_16K,
+	  .type		= MT_DEVICE
+  }, {
+	  .virtual	= (u32)OSIRIS_VA_CTRL2,
+	  .pfn		= __phys_to_pfn(OSIRIS_PA_CTRL2),
+	  .length	= SZ_16K,
+	  .type		= 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 osiris_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 osiris_uartcfgs[] = {
+	[0] = {
+		.hwport	     = 0,
+		.flags	     = 0,
+		.ucon	     = UCON,
+		.ulcon	     = ULCON,
+		.ufcon	     = UFCON,
+		.clocks	     = osiris_serial_clocks,
+		.clocks_size = ARRAY_SIZE(osiris_serial_clocks)
+	},
+	[1] = {
+		.hwport	     = 2,
+		.flags	     = 0,
+		.ucon	     = UCON,
+		.ulcon	     = ULCON,
+		.ufcon	     = UFCON,
+		.clocks	     = osiris_serial_clocks,
+		.clocks_size = ARRAY_SIZE(osiris_serial_clocks)
+	},
+};
+
+/* NAND Flash on Osiris board */
+
+static int external_map[]   = { 2 };
+static int chip0_map[]      = { 0 };
+static int chip1_map[]      = { 1 };
+
+struct mtd_partition osiris_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	= "user1",
+		.offset	= SZ_4M,
+		.size	= SZ_32M - SZ_4M,
+	},
+	[3] = {
+		.name	= "user2",
+		.offset	= SZ_32M,
+		.size	= MTDPART_SIZ_FULL,
+	}
+};
+
+/* the Osiris has 3 selectable slots for nand-flash, the two
+ * on-board chip areas, as well as the external slot.
+ *
+ * Note, there is no current hot-plug support for the External
+ * socket.
+*/
+
+static struct s3c2410_nand_set osiris_nand_sets[] = {
+	[1] = {
+		.name		= "External",
+		.nr_chips	= 1,
+		.nr_map		= external_map,
+		.nr_partitions	= ARRAY_SIZE(osiris_default_nand_part),
+		.partitions	= osiris_default_nand_part
+	},
+	[0] = {
+		.name		= "chip0",
+		.nr_chips	= 1,
+		.nr_map		= chip0_map,
+		.nr_partitions	= ARRAY_SIZE(osiris_default_nand_part),
+		.partitions	= osiris_default_nand_part
+	},
+	[2] = {
+		.name		= "chip1",
+		.nr_chips	= 1,
+		.nr_map		= chip1_map,
+		.nr_partitions	= ARRAY_SIZE(osiris_default_nand_part),
+		.partitions	= osiris_default_nand_part
+	},
+};
+
+static void osiris_nand_select(struct s3c2410_nand_set *set, int slot)
+{
+	unsigned int tmp;
+
+	slot = set->nr_map[slot] & 3;
+
+	pr_debug("osiris_nand: selecting slot %d (set %p,%p)\n",
+		 slot, set, set->nr_map);
+
+	tmp = __raw_readb(OSIRIS_VA_CTRL1);
+	tmp &= ~OSIRIS_CTRL1_NANDSEL;
+	tmp |= slot;
+
+	pr_debug("osiris_nand: ctrl1 now %02x\n", tmp);
+
+	__raw_writeb(tmp, OSIRIS_VA_CTRL1);
+}
+
+static struct s3c2410_platform_nand osiris_nand_info = {
+	.tacls		= 25,
+	.twrph0		= 60,
+	.twrph1		= 60,
+	.nr_sets	= ARRAY_SIZE(osiris_nand_sets),
+	.sets		= osiris_nand_sets,
+	.select_chip	= osiris_nand_select,
+};
+
+/* PCMCIA control and configuration */
+
+static struct resource osiris_pcmcia_resource[] = {
+	[0] = {
+		.start	= 0x0f000000,
+		.end	= 0x0f100000,
+		.flags	= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start	= 0x0c000000,
+		.end	= 0x0c100000,
+		.flags	= IORESOURCE_MEM,
+	}
+};
+
+static struct platform_device osiris_pcmcia = {
+	.name		= "osiris-pcmcia",
+	.id		= -1,
+	.num_resources	= ARRAY_SIZE(osiris_pcmcia_resource),
+	.resource	= osiris_pcmcia_resource,
+};
+
+/* Standard Osiris devices */
+
+static struct platform_device *osiris_devices[] __initdata = {
+	&s3c_device_i2c,
+	&s3c_device_nand,
+	&osiris_pcmcia,
+};
+
+static struct clk *osiris_clocks[] = {
+	&s3c24xx_dclk0,
+	&s3c24xx_dclk1,
+	&s3c24xx_clkout0,
+	&s3c24xx_clkout1,
+	&s3c24xx_uclk,
+};
+
+static struct s3c24xx_board osiris_board __initdata = {
+	.devices       = osiris_devices,
+	.devices_count = ARRAY_SIZE(osiris_devices),
+	.clocks	       = osiris_clocks,
+	.clocks_count  = ARRAY_SIZE(osiris_clocks)
+};
+
+void __init osiris_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 = &osiris_nand_info;
+
+	s3c24xx_init_io(osiris_iodesc, ARRAY_SIZE(osiris_iodesc));
+	s3c24xx_init_clocks(0);
+	s3c24xx_init_uarts(osiris_uartcfgs, ARRAY_SIZE(osiris_uartcfgs));
+	s3c24xx_set_board(&osiris_board);
+
+	/* fix bus configuration (nBE settings wrong on ABLE pre v2.20) */
+	__raw_writel(__raw_readl(S3C2410_BWSCON) | S3C2410_BWSCON_ST1 | S3C2410_BWSCON_ST2 | S3C2410_BWSCON_ST3 | S3C2410_BWSCON_ST4 | S3C2410_BWSCON_ST5, S3C2410_BWSCON);
+
+	/* write-protect line to the NAND */
+	s3c2410_gpio_setpin(S3C2410_GPA0, 1);
+}
+
+MACHINE_START(OSIRIS, "Simtec-OSIRIS")
+	/* Maintainer: Ben Dooks <ben@simtec.co.uk> */
+	.phys_ram	= S3C2410_SDRAM_PA,
+	.phys_io	= S3C2410_PA_UART,
+	.io_pg_offst	= (((u32)S3C24XX_VA_UART) >> 18) & 0xfffc,
+	.boot_params	= S3C2410_SDRAM_PA + 0x100,
+	.map_io		= osiris_map_io,
+	.init_irq	= s3c24xx_init_irq,
+	.timer		= &s3c24xx_timer,
+MACHINE_END