arch/arm/mach-msm/board-msm8960.c

   1 /* Copyright (c) 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  * 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 #include <linux/kernel.h>
  19 #include <linux/platform_device.h>
  20 #include <linux/io.h>
  21 #include <linux/irq.h>
  22 #include <linux/clkdev.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 #include "devices.h"
  34
  35 static void __init msm8960_fixup(struct tag *tag, char **cmdline,
  36                 struct meminfo *mi)
  37 {
  38         for (; tag->hdr.size; tag = tag_next(tag))
  39                 if (tag->hdr.tag == ATAG_MEM &&
  40                                 tag->u.mem.start == 0x40200000) {
  41                         tag->u.mem.start = 0x40000000;
  42                         tag->u.mem.size += SZ_2M;
  43                 }
  44 }
  45
  46 static void __init msm8960_reserve(void)
  47 {
  48         memblock_remove(0x40000000, SZ_2M);
  49 }
  50
  51 static void __init msm8960_map_io(void)
  52 {
  53         msm_map_msm8960_io();
  54 }
  55
  56 static void __init msm8960_init_irq(void)
  57 {
  58         unsigned int i;
  59         gic_init(0, GIC_PPI_START, MSM_QGIC_DIST_BASE,
  60                  (void *)MSM_QGIC_CPU_BASE);
  61
  62         /* Edge trigger PPIs except AVS_SVICINT and AVS_SVICINTSWDONE */
  63         writel(0xFFFFD7FF, MSM_QGIC_DIST_BASE + GIC_DIST_CONFIG + 4);
  64
  65         if (machine_is_msm8960_rumi3())
  66                 writel(0x0000FFFF, MSM_QGIC_DIST_BASE + GIC_DIST_ENABLE_SET);
  67
  68         /* FIXME: Not installing AVS_SVICINT and AVS_SVICINTSWDONE yet
  69          * as they are configured as level, which does not play nice with
  70          * handle_percpu_irq.
  71          */
  72         for (i = GIC_PPI_START; i < GIC_SPI_START; i++) {
  73                 if (i != AVS_SVICINT && i != AVS_SVICINTSWDONE)
  74                         irq_set_handler(i, handle_percpu_irq);
  75         }
  76 }
  77
  78 static struct platform_device *sim_devices[] __initdata = {
  79         &msm8960_device_uart_gsbi2,
  80 };
  81
  82 static struct platform_device *rumi3_devices[] __initdata = {
  83         &msm8960_device_uart_gsbi5,
  84 };
  85
  86 static void __init msm8960_sim_init(void)
  87 {
  88         platform_add_devices(sim_devices, ARRAY_SIZE(sim_devices));
  89 }
  90
  91 static void __init msm8960_rumi3_init(void)
  92 {
  93         platform_add_devices(rumi3_devices, ARRAY_SIZE(rumi3_devices));
  94 }
  95
  96 MACHINE_START(MSM8960_SIM, "QCT MSM8960 SIMULATOR")
  97         .fixup = msm8960_fixup,
  98         .reserve = msm8960_reserve,
  99         .map_io = msm8960_map_io,
 100         .init_irq = msm8960_init_irq,
 101         .timer = &msm_timer,
 102         .handle_irq = gic_handle_irq,
 103         .init_machine = msm8960_sim_init,
 104 MACHINE_END
 105
 106 MACHINE_START(MSM8960_RUMI3, "QCT MSM8960 RUMI3")
 107         .fixup = msm8960_fixup,
 108         .reserve = msm8960_reserve,
 109         .map_io = msm8960_map_io,
 110         .init_irq = msm8960_init_irq,
 111         .timer = &msm_timer,
 112         .handle_irq = gic_handle_irq,
 113         .init_machine = msm8960_rumi3_init,
 114 MACHINE_END
 115