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
  32 static void __init msm8x60_fixup(struct tag *tag, char **cmdline,
  33                 struct meminfo *mi)
  34 {
  35         for (; tag->hdr.size; tag = tag_next(tag))
  36                 if (tag->hdr.tag == ATAG_MEM &&
  37                                 tag->u.mem.start == 0x40200000) {
  38                         tag->u.mem.start = 0x40000000;
  39                         tag->u.mem.size += SZ_2M;
  40                 }
  41 }
  42
  43 static void __init msm8x60_reserve(void)
  44 {
  45         memblock_remove(0x40000000, SZ_2M);
  46 }
  47
  48 static void __init msm8x60_map_io(void)
  49 {
  50         msm_map_msm8x60_io();
  51 }
  52
  53 #ifdef CONFIG_OF
  54 static struct of_device_id msm_dt_gic_match[] __initdata = {
  55         { .compatible = "qcom,msm-8660-qgic", .data = gic_of_init },
  56         {}
  57 };
  58 #endif
  59
  60 static void __init msm8x60_init_irq(void)
  61 {
  62         if (!of_have_populated_dt())
  63                 gic_init(0, GIC_PPI_START, MSM_QGIC_DIST_BASE,
  64                          (void *)MSM_QGIC_CPU_BASE);
  65 #ifdef CONFIG_OF
  66         else
  67                 of_irq_init(msm_dt_gic_match);
  68 #endif
  69
  70         /* Edge trigger PPIs except AVS_SVICINT and AVS_SVICINTSWDONE */
  71         writel(0xFFFFD7FF, MSM_QGIC_DIST_BASE + GIC_DIST_CONFIG + 4);
  72
  73         /* RUMI does not adhere to GIC spec by enabling STIs by default.
  74          * Enable/clear is supposed to be RO for STIs, but is RW on RUMI.
  75          */
  76         if (!machine_is_msm8x60_sim())
  77                 writel(0x0000FFFF, MSM_QGIC_DIST_BASE + GIC_DIST_ENABLE_SET);
  78 }
  79
  80 static void __init msm8x60_init(void)
  81 {
  82 }
  83
  84 #ifdef CONFIG_OF
  85 static struct of_dev_auxdata msm_auxdata_lookup[] __initdata = {
  86         {}
  87 };
  88
  89 static void __init msm8x60_dt_init(void)
  90 {
  91         if (of_machine_is_compatible("qcom,msm8660-surf")) {
  92                 printk(KERN_INFO "Init surf UART registers\n");
  93                 msm8x60_init_uart12dm();
  94         }
  95
  96         of_platform_populate(NULL, of_default_bus_match_table,
  97                         msm_auxdata_lookup, NULL);
  98 }
  99
 100 static const char *msm8x60_fluid_match[] __initdata = {
 101         "qcom,msm8660-fluid",
 102         "qcom,msm8660-surf",
 103         NULL
 104 };
 105 #endif /* CONFIG_OF */
 106
 107 MACHINE_START(MSM8X60_RUMI3, "QCT MSM8X60 RUMI3")
 108         .fixup = msm8x60_fixup,
 109         .reserve = msm8x60_reserve,
 110         .map_io = msm8x60_map_io,
 111         .init_irq = msm8x60_init_irq,
 112         .handle_irq = gic_handle_irq,
 113         .init_machine = msm8x60_init,
 114         .timer = &msm_timer,
 115 MACHINE_END
 116
 117 MACHINE_START(MSM8X60_SURF, "QCT MSM8X60 SURF")
 118         .fixup = msm8x60_fixup,
 119         .reserve = msm8x60_reserve,
 120         .map_io = msm8x60_map_io,
 121         .init_irq = msm8x60_init_irq,
 122         .handle_irq = gic_handle_irq,
 123         .init_machine = msm8x60_init,
 124         .timer = &msm_timer,
 125 MACHINE_END
 126
 127 MACHINE_START(MSM8X60_SIM, "QCT MSM8X60 SIMULATOR")
 128         .fixup = msm8x60_fixup,
 129         .reserve = msm8x60_reserve,
 130         .map_io = msm8x60_map_io,
 131         .init_irq = msm8x60_init_irq,
 132         .handle_irq = gic_handle_irq,
 133         .init_machine = msm8x60_init,
 134         .timer = &msm_timer,
 135 MACHINE_END
 136
 137 MACHINE_START(MSM8X60_FFA, "QCT MSM8X60 FFA")
 138         .fixup = msm8x60_fixup,
 139         .reserve = msm8x60_reserve,
 140         .map_io = msm8x60_map_io,
 141         .init_irq = msm8x60_init_irq,
 142         .handle_irq = gic_handle_irq,
 143         .init_machine = msm8x60_init,
 144         .timer = &msm_timer,
 145 MACHINE_END
 146
 147 #ifdef CONFIG_OF
 148 /* TODO: General device tree support for all MSM. */
 149 DT_MACHINE_START(MSM_DT, "Qualcomm MSM (Flattened Device Tree)")
 150         .map_io = msm8x60_map_io,
 151         .init_irq = msm8x60_init_irq,
 152         .init_machine = msm8x60_dt_init,
 153         .timer = &msm_timer,
 154         .dt_compat = msm8x60_fluid_match,
 155 MACHINE_END
 156 #endif /* CONFIG_OF */