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

   1 /* Copyright (c) 2010, 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  * You should have received a copy of the GNU General Public License
  13  * along with this program; if not, write to the Free Software
  14  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  15  * 02110-1301, USA.
  16  *
  17  */
  18
  19 #include <linux/kernel.h>
  20 #include <linux/platform_device.h>
  21 #include <linux/io.h>
  22 #include <linux/irq.h>
  23 #include <linux/memblock.h>
  24
  25 #include <asm/mach-types.h>
  26 #include <asm/mach/arch.h>
  27 #include <asm/hardware/gic.h>
  28 #include <asm/setup.h>
  29
  30 #include <mach/board.h>
  31 #include <mach/msm_iomap.h>
  32
  33 static void __init msm8x60_fixup(struct machine_desc *desc, struct tag *tag,
  34                          char **cmdline, 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 static void __init msm8x60_init_irq(void)
  55 {
  56         unsigned int i;
  57
  58         gic_init(0, GIC_PPI_START, MSM_QGIC_DIST_BASE,
  59                  (void *)MSM_QGIC_CPU_BASE);
  60
  61         /* Edge trigger PPIs except AVS_SVICINT and AVS_SVICINTSWDONE */
  62         writel(0xFFFFD7FF, MSM_QGIC_DIST_BASE + GIC_DIST_CONFIG + 4);
  63
  64         /* RUMI does not adhere to GIC spec by enabling STIs by default.
  65          * Enable/clear is supposed to be RO for STIs, but is RW on RUMI.
  66          */
  67         if (!machine_is_msm8x60_sim())
  68                 writel(0x0000FFFF, MSM_QGIC_DIST_BASE + GIC_DIST_ENABLE_SET);
  69
  70         /* FIXME: Not installing AVS_SVICINT and AVS_SVICINTSWDONE yet
  71          * as they are configured as level, which does not play nice with
  72          * handle_percpu_irq.
  73          */
  74         for (i = GIC_PPI_START; i < GIC_SPI_START; i++) {
  75                 if (i != AVS_SVICINT && i != AVS_SVICINTSWDONE)
  76                         irq_set_handler(i, handle_percpu_irq);
  77         }
  78 }
  79
  80 static void __init msm8x60_init(void)
  81 {
  82 }
  83
  84 MACHINE_START(MSM8X60_RUMI3, "QCT MSM8X60 RUMI3")
  85         .fixup = msm8x60_fixup,
  86         .reserve = msm8x60_reserve,
  87         .map_io = msm8x60_map_io,
  88         .init_irq = msm8x60_init_irq,
  89         .init_machine = msm8x60_init,
  90         .timer = &msm_timer,
  91 MACHINE_END
  92
  93 MACHINE_START(MSM8X60_SURF, "QCT MSM8X60 SURF")
  94         .fixup = msm8x60_fixup,
  95         .reserve = msm8x60_reserve,
  96         .map_io = msm8x60_map_io,
  97         .init_irq = msm8x60_init_irq,
  98         .init_machine = msm8x60_init,
  99         .timer = &msm_timer,
 100 MACHINE_END
 101
 102 MACHINE_START(MSM8X60_SIM, "QCT MSM8X60 SIMULATOR")
 103         .fixup = msm8x60_fixup,
 104         .reserve = msm8x60_reserve,
 105         .map_io = msm8x60_map_io,
 106         .init_irq = msm8x60_init_irq,
 107         .init_machine = msm8x60_init,
 108         .timer = &msm_timer,
 109 MACHINE_END
 110
 111 MACHINE_START(MSM8X60_FFA, "QCT MSM8X60 FFA")
 112         .fixup = msm8x60_fixup,
 113         .reserve = msm8x60_reserve,
 114         .map_io = msm8x60_map_io,
 115         .init_irq = msm8x60_init_irq,
 116         .init_machine = msm8x60_init,
 117         .timer = &msm_timer,
 118 MACHINE_END