arch/arm/mach-msm/board-msm8x60.c

   1 /* Copyright (c) 2010, 2011, Code Aurora Forum. All rights reserved.
   2  *
   3  * This program is free software; you can redistribute it and/or modify
   4  * it under the terms of the GNU General Public License version 2 and
   5  * only version 2 as published by the Free Software Foundation.
   6  *
   7  * This program is distributed in the hope that it will be useful,
   8  * but WITHOUT ANY WARRANTY; without even the implied warranty of
   9  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  10  * GNU General Public License for more details.
  11  */
  12
  13 #include <linux/kernel.h>
  14 #include <linux/platform_device.h>
  15 #include <linux/io.h>
  16 #include <linux/irq.h>
  17 #include <linux/irqdomain.h>
  18 #include <linux/of.h>
  19 #include <linux/of_address.h>
  20 #include <linux/of_irq.h>
  21 #include <linux/of_platform.h>
  22 #include <linux/memblock.h>
  23
  24 #include <asm/mach-types.h>
  25 #include <asm/mach/arch.h>
  26 #include <asm/hardware/gic.h>
  27 #include <asm/setup.h>
  28
  29 #include <mach/board.h>
  30 #include <mach/msm_iomap.h>
  31 #include "common.h"
  32
  33 static void __init msm8x60_fixup(struct tag *tag, char **cmdline,
  34                 struct meminfo *mi)
  35 {
  36         for (; tag->hdr.size; tag = tag_next(tag))
  37                 if (tag->hdr.tag == ATAG_MEM &&
  38                                 tag->u.mem.start == 0x40200000) {
  39                         tag->u.mem.start = 0x40000000;
  40                         tag->u.mem.size += SZ_2M;
  41                 }
  42 }
  43
  44 static void __init msm8x60_reserve(void)
  45 {
  46         memblock_remove(0x40000000, SZ_2M);
  47 }
  48
  49 static void __init msm8x60_map_io(void)
  50 {
  51         msm_map_msm8x60_io();
  52 }
  53
  54 #ifdef CONFIG_OF
  55 static struct of_device_id msm_dt_gic_match[] __initdata = {
  56         { .compatible = "qcom,msm-8660-qgic", .data = gic_of_init },
  57         {}
  58 };
  59 #endif
  60
  61 static void __init msm8x60_init_irq(void)
  62 {
  63         if (!of_have_populated_dt())
  64                 gic_init(0, GIC_PPI_START, MSM_QGIC_DIST_BASE,
  65                          (void *)MSM_QGIC_CPU_BASE);
  66 #ifdef CONFIG_OF
  67         else
  68                 of_irq_init(msm_dt_gic_match);
  69 #endif
  70
  71         /* RUMI does not adhere to GIC spec by enabling STIs by default.
  72          * Enable/clear is supposed to be RO for STIs, but is RW on RUMI.
  73          */
  74         if (!machine_is_msm8x60_sim())
  75                 writel(0x0000FFFF, MSM_QGIC_DIST_BASE + GIC_DIST_ENABLE_SET);
  76 }
  77
  78 static void __init msm8x60_init(void)
  79 {
  80 }
  81
  82 static void __init msm8x60_init_late(void)
  83 {
  84         smd_debugfs_init();
  85 }
  86
  87 #ifdef CONFIG_OF
  88 static struct of_dev_auxdata msm_auxdata_lookup[] __initdata = {
  89         {}
  90 };
  91
  92 static void __init msm8x60_dt_init(void)
  93 {
  94         if (of_machine_is_compatible("qcom,msm8660-surf")) {
  95                 printk(KERN_INFO "Init surf UART registers\n");
  96                 msm8x60_init_uart12dm();
  97         }
  98
  99         of_platform_populate(NULL, of_default_bus_match_table,
 100                         msm_auxdata_lookup, NULL);
 101 }
 102
 103 static const char *msm8x60_fluid_match[] __initdata = {
 104         "qcom,msm8660-fluid",
 105         "qcom,msm8660-surf",
 106         NULL
 107 };
 108 #endif /* CONFIG_OF */
 109
 110 MACHINE_START(MSM8X60_RUMI3, "QCT MSM8X60 RUMI3")
 111         .fixup = msm8x60_fixup,
 112         .reserve = msm8x60_reserve,
 113         .map_io = msm8x60_map_io,
 114         .init_irq = msm8x60_init_irq,
 115         .handle_irq = gic_handle_irq,
 116         .init_machine = msm8x60_init,
 117         .init_late = msm8x60_init_late,
 118         .timer = &msm8x60_timer,
 119 MACHINE_END
 120
 121 MACHINE_START(MSM8X60_SURF, "QCT MSM8X60 SURF")
 122         .fixup = msm8x60_fixup,
 123         .reserve = msm8x60_reserve,
 124         .map_io = msm8x60_map_io,
 125         .init_irq = msm8x60_init_irq,
 126         .handle_irq = gic_handle_irq,
 127         .init_machine = msm8x60_init,
 128         .init_late = msm8x60_init_late,
 129         .timer = &msm8x60_timer,
 130 MACHINE_END
 131
 132 MACHINE_START(MSM8X60_SIM, "QCT MSM8X60 SIMULATOR")
 133         .fixup = msm8x60_fixup,
 134         .reserve = msm8x60_reserve,
 135         .map_io = msm8x60_map_io,
 136         .init_irq = msm8x60_init_irq,
 137         .handle_irq = gic_handle_irq,
 138         .init_machine = msm8x60_init,
 139         .init_late = msm8x60_init_late,
 140         .timer = &msm8x60_timer,
 141 MACHINE_END
 142
 143 MACHINE_START(MSM8X60_FFA, "QCT MSM8X60 FFA")
 144         .fixup = msm8x60_fixup,
 145         .reserve = msm8x60_reserve,
 146         .map_io = msm8x60_map_io,
 147         .init_irq = msm8x60_init_irq,
 148         .handle_irq = gic_handle_irq,
 149         .init_machine = msm8x60_init,
 150         .init_late = msm8x60_init_late,
 151         .timer = &msm8x60_timer,
 152 MACHINE_END
 153
 154 #ifdef CONFIG_OF
 155 /* TODO: General device tree support for all MSM. */
 156 DT_MACHINE_START(MSM_DT, "Qualcomm MSM (Flattened Device Tree)")
 157         .map_io = msm8x60_map_io,
 158         .init_irq = msm8x60_init_irq,
 159         .handle_irq = gic_handle_irq,
 160         .init_machine = msm8x60_dt_init,
 161         .init_late = msm8x60_init_late,
 162         .timer = &msm8x60_timer,
 163         .dt_compat = msm8x60_fluid_match,
 164 MACHINE_END
 165 #endif /* CONFIG_OF */