Merge branch 'msm-fix' of git://codeaurora.org/quic/kernel/davidb/linux-msm into...
[pandora-kernel.git] / 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 tag *tag, char **cmdline,
32                 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 */