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_platform.h>
  21 #include <linux/memblock.h>
  22
  23 #include <asm/mach-types.h>
  24 #include <asm/mach/arch.h>
  25 #include <asm/hardware/gic.h>
  26 #include <asm/setup.h>
  27
  28 #include <mach/board.h>
  29 #include <mach/msm_iomap.h>
  30
  31 static void __init msm8x60_fixup(struct machine_desc *desc, struct tag *tag,
  32                          char **cmdline, struct meminfo *mi)
  33 {
  34         for (; tag->hdr.size; tag = tag_next(tag))
  35                 if (tag->hdr.tag == ATAG_MEM &&
  36                                 tag->u.mem.start == 0x40200000) {
  37                         tag->u.mem.start = 0x40000000;
  38                         tag->u.mem.size += SZ_2M;
  39                 }
  40 }
  41
  42 static void __init msm8x60_reserve(void)
  43 {
  44         memblock_remove(0x40000000, SZ_2M);
  45 }
  46
  47 static void __init msm8x60_map_io(void)
  48 {
  49         msm_map_msm8x60_io();
  50 }
  51
  52 static void __init msm8x60_init_irq(void)
  53 {
  54         gic_init(0, GIC_PPI_START, MSM_QGIC_DIST_BASE,
  55                  (void *)MSM_QGIC_CPU_BASE);
  56
  57         /* Edge trigger PPIs except AVS_SVICINT and AVS_SVICINTSWDONE */
  58         writel(0xFFFFD7FF, MSM_QGIC_DIST_BASE + GIC_DIST_CONFIG + 4);
  59
  60         /* RUMI does not adhere to GIC spec by enabling STIs by default.
  61          * Enable/clear is supposed to be RO for STIs, but is RW on RUMI.
  62          */
  63         if (!machine_is_msm8x60_sim())
  64                 writel(0x0000FFFF, MSM_QGIC_DIST_BASE + GIC_DIST_ENABLE_SET);
  65 }
  66
  67 static void __init msm8x60_init(void)
  68 {
  69 }
  70
  71 #ifdef CONFIG_OF
  72 static struct of_dev_auxdata msm_auxdata_lookup[] __initdata = {
  73         {}
  74 };
  75
  76 static struct of_device_id msm_dt_gic_match[] __initdata = {
  77         { .compatible = "qcom,msm-8660-qgic", },
  78         {}
  79 };
  80
  81 static void __init msm8x60_dt_init(void)
  82 {
  83         struct device_node *node;
  84
  85         node = of_find_matching_node_by_address(NULL, msm_dt_gic_match,
  86                         MSM8X60_QGIC_DIST_PHYS);
  87         if (node)
  88                 irq_domain_add_simple(node, GIC_SPI_START);
  89
  90         if (of_machine_is_compatible("qcom,msm8660-surf")) {
  91                 printk(KERN_INFO "Init surf UART registers\n");
  92                 msm8x60_init_uart12dm();
  93         }
  94
  95         of_platform_populate(NULL, of_default_bus_match_table,
  96                         msm_auxdata_lookup, NULL);
  97 }
  98
  99 static const char *msm8x60_fluid_match[] __initdata = {
 100         "qcom,msm8660-fluid",
 101         "qcom,msm8660-surf",
 102         NULL
 103 };
 104 #endif /* CONFIG_OF */
 105
 106 MACHINE_START(MSM8X60_RUMI3, "QCT MSM8X60 RUMI3")
 107         .fixup = msm8x60_fixup,
 108         .reserve = msm8x60_reserve,
 109         .map_io = msm8x60_map_io,
 110         .init_irq = msm8x60_init_irq,
 111         .init_machine = msm8x60_init,
 112         .timer = &msm_timer,
 113 MACHINE_END
 114
 115 MACHINE_START(MSM8X60_SURF, "QCT MSM8X60 SURF")
 116         .fixup = msm8x60_fixup,
 117         .reserve = msm8x60_reserve,
 118         .map_io = msm8x60_map_io,
 119         .init_irq = msm8x60_init_irq,
 120         .init_machine = msm8x60_init,
 121         .timer = &msm_timer,
 122 MACHINE_END
 123
 124 MACHINE_START(MSM8X60_SIM, "QCT MSM8X60 SIMULATOR")
 125         .fixup = msm8x60_fixup,
 126         .reserve = msm8x60_reserve,
 127         .map_io = msm8x60_map_io,
 128         .init_irq = msm8x60_init_irq,
 129         .init_machine = msm8x60_init,
 130         .timer = &msm_timer,
 131 MACHINE_END
 132
 133 MACHINE_START(MSM8X60_FFA, "QCT MSM8X60 FFA")
 134         .fixup = msm8x60_fixup,
 135         .reserve = msm8x60_reserve,
 136         .map_io = msm8x60_map_io,
 137         .init_irq = msm8x60_init_irq,
 138         .init_machine = msm8x60_init,
 139         .timer = &msm_timer,
 140 MACHINE_END
 141
 142 #ifdef CONFIG_OF
 143 /* TODO: General device tree support for all MSM. */
 144 DT_MACHINE_START(MSM_DT, "Qualcomm MSM (Flattened Device Tree)")
 145         .map_io = msm8x60_map_io,
 146         .init_irq = msm8x60_init_irq,
 147         .init_machine = msm8x60_dt_init,
 148         .timer = &msm_timer,
 149         .dt_compat = msm8x60_fluid_match,
 150 MACHINE_END
 151 #endif /* CONFIG_OF */