[ARM] JIVE: Initial machine support for Logitech Jive

This is the base machine support for the Logitech Jive
machine.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>

1 files changed, 348 insertions, 0 deletions

diff --git a/arch/arm/mach-s3c2412/mach-jive.c b/arch/arm/mach-s3c2412/mach-jive.c
new file mode 100644
index 000000000000..05da51d1ce4e
--- /dev/null
+++ b/arch/arm/mach-s3c2412/mach-jive.c
@@ -0,0 +1,348 @@
+/* linux/arch/arm/mach-s3c2410/mach-jive.c
+ *
+ * Copyright 2007 Simtec Electronics
+ *      Ben Dooks <ben@simtec.co.uk>
+ *
+ * http://armlinux.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/sysdev.h>
+#include <linux/serial_core.h>
+#include <linux/platform_device.h>
+
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/partitions.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/irq.h>
+
+#include <asm/plat-s3c/regs-serial.h>
+#include <asm/plat-s3c/nand.h>
+
+#include <asm/arch/regs-power.h>
+#include <asm/arch/regs-gpio.h>
+#include <asm/arch/regs-mem.h>
+#include <asm/arch/regs-lcd.h>
+
+#include <asm/mach-types.h>
+
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/nand.h>
+#include <linux/mtd/nand_ecc.h>
+#include <linux/mtd/partitions.h>
+
+#include <asm/plat-s3c24xx/clock.h>
+#include <asm/plat-s3c24xx/devs.h>
+#include <asm/plat-s3c24xx/cpu.h>
+#include <asm/plat-s3c24xx/pm.h>
+#include <asm/plat-s3c24xx/udc.h>
+
+static struct map_desc jive_iodesc[] __initdata = {
+};
+
+#define UCON S3C2410_UCON_DEFAULT
+#define ULCON S3C2410_LCON_CS8 | S3C2410_LCON_PNONE
+#define UFCON S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE
+
+static struct s3c2410_uartcfg jive_uartcfgs[] = {
+        [0] = {
+                .hwport      = 0,
+                .flags       = 0,
+                .ucon        = UCON,
+                .ulcon       = ULCON,
+                .ufcon       = UFCON,
+        },
+        [1] = {
+                .hwport      = 1,
+                .flags       = 0,
+                .ucon        = UCON,
+                .ulcon       = ULCON,
+                .ufcon       = UFCON,
+        },
+        [2] = {
+                .hwport      = 2,
+                .flags       = 0,
+                .ucon        = UCON,
+                .ulcon       = ULCON,
+                .ufcon       = UFCON,
+        }
+};
+
+/* Jive flash assignment
+ *
+ * 0x00000000-0x00028000 : uboot
+ * 0x00028000-0x0002c000 : uboot env
+ * 0x0002c000-0x00030000 : spare
+ * 0x00030000-0x00200000 : zimage A
+ * 0x00200000-0x01600000 : cramfs A
+ * 0x01600000-0x017d0000 : zimage B
+ * 0x017d0000-0x02bd0000 : cramfs B
+ * 0x02bd0000-0x03fd0000 : yaffs
+ */
+static struct mtd_partition jive_imageA_nand_part[] = {
+
+#ifdef CONFIG_MACH_JIVE_SHOW_BOOTLOADER
+        /* Don't allow access to the bootloader from linux */
+        {
+                .name           = "uboot",
+                .offset         = 0,
+                .size           = (160 * SZ_1K),
+                .mask_flags     = MTD_WRITEABLE, /* force read-only */
+        },
+
+        /* spare */
+        {
+                .name           = "spare",
+                .offset         = (176 * SZ_1K),
+                .size           = (16 * SZ_1K),
+        },
+#endif
+
+        /* booted images */
+        {
+                .name           = "kernel (ro)",
+                .offset         = (192 * SZ_1K),
+                .size           = (SZ_2M) - (192 * SZ_1K),
+                .mask_flags     = MTD_WRITEABLE, /* force read-only */
+        }, {
+                .name           = "root (ro)",
+                .offset         = (SZ_2M),
+                .size           = (20 * SZ_1M),
+                .mask_flags     = MTD_WRITEABLE, /* force read-only */
+        },
+
+        /* yaffs */
+        {
+                .name           = "yaffs",
+                .offset         = (44 * SZ_1M),
+                .size           = (20 * SZ_1M),
+        },
+
+        /* bootloader environment */
+        {
+                .name           = "env",
+                .offset         = (160 * SZ_1K),
+                .size           = (16 * SZ_1K),
+        },
+
+        /* upgrade images */
+        {
+                .name           = "zimage",
+                .offset         = (22 * SZ_1M),
+                .size           = (2 * SZ_1M) - (192 * SZ_1K),
+        }, {
+                .name           = "cramfs",
+                .offset         = (24 * SZ_1M) - (192*SZ_1K),
+                .size           = (20 * SZ_1M),
+        },
+};
+
+static struct mtd_partition jive_imageB_nand_part[] = {
+
+#ifdef CONFIG_MACH_JIVE_SHOW_BOOTLOADER
+        /* Don't allow access to the bootloader from linux */
+        {
+                .name           = "uboot",
+                .offset         = 0,
+                .size           = (160 * SZ_1K),
+                .mask_flags     = MTD_WRITEABLE, /* force read-only */
+        },
+
+        /* spare */
+        {
+                .name           = "spare",
+                .offset         = (176 * SZ_1K),
+                .size           = (16 * SZ_1K),
+        },
+#endif
+
+        /* booted images */
+        {
+                .name           = "kernel (ro)",
+                .offset         = (22 * SZ_1M),
+                .size           = (2 * SZ_1M) - (192 * SZ_1K),
+                .mask_flags     = MTD_WRITEABLE, /* force read-only */
+        },
+        {
+                .name           = "root (ro)",
+                .offset         = (24 * SZ_1M) - (192 * SZ_1K),
+                .size           = (20 * SZ_1M),
+                .mask_flags     = MTD_WRITEABLE, /* force read-only */
+        },
+
+        /* yaffs */
+        {
+                .name           = "yaffs",
+                .offset         = (44 * SZ_1M),
+                .size           = (20 * SZ_1M),
+        },
+
+        /* bootloader environment */
+        {
+                .name           = "env",
+                .offset         = (160 * SZ_1K),
+                .size           = (16 * SZ_1K),
+        },
+
+        /* upgrade images */
+        {
+                .name           = "zimage",
+                .offset         = (192 * SZ_1K),
+                .size           = (2 * SZ_1M) - (192 * SZ_1K),
+        }, {
+                .name           = "cramfs",
+                .offset         = (2 * SZ_1M),
+                .size           = (20 * SZ_1M),
+        },
+};
+
+static struct s3c2410_nand_set jive_nand_sets[] = {
+        [0] = {
+                .name           = "flash",
+                .nr_chips       = 1,
+                .nr_partitions  = ARRAY_SIZE(jive_imageA_nand_part),
+                .partitions     = jive_imageA_nand_part,
+        },
+};
+
+static struct s3c2410_platform_nand jive_nand_info = {
+        /* set taken from osiris nand timings, possibly still conservative */
+        .tacls          = 30,
+        .twrph0         = 55,
+        .twrph1         = 40,
+        .sets           = jive_nand_sets,
+        .nr_sets        = ARRAY_SIZE(jive_nand_sets),
+};
+
+static int __init jive_mtdset(char *options)
+{
+        struct s3c2410_nand_set *nand = &jive_nand_sets[0];
+        unsigned long set;
+
+        if (options == NULL || options[0] == '\0')
+                return 0;
+
+        if (strict_strtoul(options, 10, &set)) {
+                printk(KERN_ERR "failed to parse mtdset=%s\n", options);
+                return 0;
+        }
+
+        switch (set) {
+        case 1:
+                nand->nr_partitions = ARRAY_SIZE(jive_imageB_nand_part);
+                nand->partitions = jive_imageB_nand_part;
+        case 0:
+                /* this is already setup in the nand info */
+                break;
+        default:
+                printk(KERN_ERR "Unknown mtd set %ld specified,"
+                       "using default.", set);
+        }
+
+        return 0;
+}
+
+/* parse the mtdset= option given to the kernel command line */
+__setup("mtdset=", jive_mtdset);
+
+static struct platform_device *jive_devices[] __initdata = {
+        &s3c_device_usb,
+        &s3c_device_rtc,
+        &s3c_device_wdt,
+        &s3c_device_i2c,
+        &s3c_device_nand,
+        &s3c_device_usbgadget,
+};
+
+static struct s3c2410_udc_mach_info jive_udc_cfg __initdata = {
+        .vbus_pin       = S3C2410_GPG1,         /* detect is on GPG1 */
+};
+
+/* Jive power management device */
+
+#ifdef CONFIG_PM
+static int jive_pm_suspend(struct sys_device *sd, pm_message_t state)
+{
+        /* Write the magic value u-boot uses to check for resume into
+         * the INFORM0 register, and ensure INFORM1 is set to the
+         * correct address to resume from. */
+
+        __raw_writel(0x2BED, S3C2412_INFORM0);
+        __raw_writel(virt_to_phys(s3c2410_cpu_resume), S3C2412_INFORM1);
+
+        return 0;
+}
+
+static int jive_pm_resume(struct sys_device *sd)
+{
+        __raw_writel(0x0, S3C2412_INFORM0);
+        return 0;
+}
+
+#else
+#define jive_pm_suspend NULL
+#define jive_pm_resume NULL
+#endif
+
+static struct sysdev_class jive_pm_sysclass = {
+        .name           = "jive-pm",
+        .suspend        = jive_pm_suspend,
+        .resume         = jive_pm_resume,
+};
+
+static struct sys_device jive_pm_sysdev = {
+        .cls            = &jive_pm_sysclass,
+};
+
+static void __init jive_map_io(void)
+{
+        s3c24xx_init_io(jive_iodesc, ARRAY_SIZE(jive_iodesc));
+        s3c24xx_init_clocks(12000000);
+        s3c24xx_init_uarts(jive_uartcfgs, ARRAY_SIZE(jive_uartcfgs));
+}
+
+static void __init jive_machine_init(void)
+{
+        /* register system devices for managing low level suspend */
+
+        sysdev_class_register(&jive_pm_sysclass);
+        sysdev_register(&jive_pm_sysdev);
+
+        s3c2410_pm_init();
+
+        s3c_device_nand.dev.platform_data = &jive_nand_info;
+
+        /* Turn off suspend on both USB ports, and switch the
+         * selectable USB port to USB device mode. */
+
+        s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
+                              S3C2410_MISCCR_USBSUSPND0 |
+                              S3C2410_MISCCR_USBSUSPND1, 0x0);
+
+        s3c24xx_udc_set_platdata(&jive_udc_cfg);
+
+        platform_add_devices(jive_devices, ARRAY_SIZE(jive_devices));
+}
+
+MACHINE_START(JIVE, "JIVE")
+        /* Maintainer: Ben Dooks <ben@fluff.org> */
+        .phys_io        = S3C2410_PA_UART,
+        .io_pg_offst    = (((u32)S3C24XX_VA_UART) >> 18) & 0xfffc,
+        .boot_params    = S3C2410_SDRAM_PA + 0x100,
+
+        .init_irq       = s3c24xx_init_irq,
+        .map_io         = jive_map_io,
+        .init_machine   = jive_machine_init,
+        .timer          = &s3c24xx_timer,
+MACHINE_END