Fix for KVMFORNFV-23(Fuel installed KVM kernel blank screens on boot).
[kvmfornfv.git] / kernel / arch / arm / mach-spear / spear310.c
1 /*
2  * arch/arm/mach-spear3xx/spear310.c
3  *
4  * SPEAr310 machine source file
5  *
6  * Copyright (C) 2009-2012 ST Microelectronics
7  * Viresh Kumar <viresh.linux@gmail.com>
8  *
9  * This file is licensed under the terms of the GNU General Public
10  * License version 2. This program is licensed "as is" without any
11  * warranty of any kind, whether express or implied.
12  */
13
14 #define pr_fmt(fmt) "SPEAr310: " fmt
15
16 #include <linux/amba/pl08x.h>
17 #include <linux/amba/serial.h>
18 #include <linux/of_platform.h>
19 #include <asm/mach/arch.h>
20 #include "generic.h"
21 #include <mach/spear.h>
22
23 #define SPEAR310_UART1_BASE             UL(0xB2000000)
24 #define SPEAR310_UART2_BASE             UL(0xB2080000)
25 #define SPEAR310_UART3_BASE             UL(0xB2100000)
26 #define SPEAR310_UART4_BASE             UL(0xB2180000)
27 #define SPEAR310_UART5_BASE             UL(0xB2200000)
28
29 /* DMAC platform data's slave info */
30 struct pl08x_channel_data spear310_dma_info[] = {
31         {
32                 .bus_id = "uart0_rx",
33                 .min_signal = 2,
34                 .max_signal = 2,
35                 .muxval = 0,
36                 .periph_buses = PL08X_AHB1,
37         }, {
38                 .bus_id = "uart0_tx",
39                 .min_signal = 3,
40                 .max_signal = 3,
41                 .muxval = 0,
42                 .periph_buses = PL08X_AHB1,
43         }, {
44                 .bus_id = "ssp0_rx",
45                 .min_signal = 8,
46                 .max_signal = 8,
47                 .muxval = 0,
48                 .periph_buses = PL08X_AHB1,
49         }, {
50                 .bus_id = "ssp0_tx",
51                 .min_signal = 9,
52                 .max_signal = 9,
53                 .muxval = 0,
54                 .periph_buses = PL08X_AHB1,
55         }, {
56                 .bus_id = "i2c_rx",
57                 .min_signal = 10,
58                 .max_signal = 10,
59                 .muxval = 0,
60                 .periph_buses = PL08X_AHB1,
61         }, {
62                 .bus_id = "i2c_tx",
63                 .min_signal = 11,
64                 .max_signal = 11,
65                 .muxval = 0,
66                 .periph_buses = PL08X_AHB1,
67         }, {
68                 .bus_id = "irda",
69                 .min_signal = 12,
70                 .max_signal = 12,
71                 .muxval = 0,
72                 .periph_buses = PL08X_AHB1,
73         }, {
74                 .bus_id = "adc",
75                 .min_signal = 13,
76                 .max_signal = 13,
77                 .muxval = 0,
78                 .periph_buses = PL08X_AHB1,
79         }, {
80                 .bus_id = "to_jpeg",
81                 .min_signal = 14,
82                 .max_signal = 14,
83                 .muxval = 0,
84                 .periph_buses = PL08X_AHB1,
85         }, {
86                 .bus_id = "from_jpeg",
87                 .min_signal = 15,
88                 .max_signal = 15,
89                 .muxval = 0,
90                 .periph_buses = PL08X_AHB1,
91         }, {
92                 .bus_id = "uart1_rx",
93                 .min_signal = 0,
94                 .max_signal = 0,
95                 .muxval = 1,
96                 .periph_buses = PL08X_AHB1,
97         }, {
98                 .bus_id = "uart1_tx",
99                 .min_signal = 1,
100                 .max_signal = 1,
101                 .muxval = 1,
102                 .periph_buses = PL08X_AHB1,
103         }, {
104                 .bus_id = "uart2_rx",
105                 .min_signal = 2,
106                 .max_signal = 2,
107                 .muxval = 1,
108                 .periph_buses = PL08X_AHB1,
109         }, {
110                 .bus_id = "uart2_tx",
111                 .min_signal = 3,
112                 .max_signal = 3,
113                 .muxval = 1,
114                 .periph_buses = PL08X_AHB1,
115         }, {
116                 .bus_id = "uart3_rx",
117                 .min_signal = 4,
118                 .max_signal = 4,
119                 .muxval = 1,
120                 .periph_buses = PL08X_AHB1,
121         }, {
122                 .bus_id = "uart3_tx",
123                 .min_signal = 5,
124                 .max_signal = 5,
125                 .muxval = 1,
126                 .periph_buses = PL08X_AHB1,
127         }, {
128                 .bus_id = "uart4_rx",
129                 .min_signal = 6,
130                 .max_signal = 6,
131                 .muxval = 1,
132                 .periph_buses = PL08X_AHB1,
133         }, {
134                 .bus_id = "uart4_tx",
135                 .min_signal = 7,
136                 .max_signal = 7,
137                 .muxval = 1,
138                 .periph_buses = PL08X_AHB1,
139         }, {
140                 .bus_id = "uart5_rx",
141                 .min_signal = 8,
142                 .max_signal = 8,
143                 .muxval = 1,
144                 .periph_buses = PL08X_AHB1,
145         }, {
146                 .bus_id = "uart5_tx",
147                 .min_signal = 9,
148                 .max_signal = 9,
149                 .muxval = 1,
150                 .periph_buses = PL08X_AHB1,
151         }, {
152                 .bus_id = "ras5_rx",
153                 .min_signal = 10,
154                 .max_signal = 10,
155                 .muxval = 1,
156                 .periph_buses = PL08X_AHB1,
157         }, {
158                 .bus_id = "ras5_tx",
159                 .min_signal = 11,
160                 .max_signal = 11,
161                 .muxval = 1,
162                 .periph_buses = PL08X_AHB1,
163         }, {
164                 .bus_id = "ras6_rx",
165                 .min_signal = 12,
166                 .max_signal = 12,
167                 .muxval = 1,
168                 .periph_buses = PL08X_AHB1,
169         }, {
170                 .bus_id = "ras6_tx",
171                 .min_signal = 13,
172                 .max_signal = 13,
173                 .muxval = 1,
174                 .periph_buses = PL08X_AHB1,
175         }, {
176                 .bus_id = "ras7_rx",
177                 .min_signal = 14,
178                 .max_signal = 14,
179                 .muxval = 1,
180                 .periph_buses = PL08X_AHB1,
181         }, {
182                 .bus_id = "ras7_tx",
183                 .min_signal = 15,
184                 .max_signal = 15,
185                 .muxval = 1,
186                 .periph_buses = PL08X_AHB1,
187         },
188 };
189
190 /* uart devices plat data */
191 static struct amba_pl011_data spear310_uart_data[] = {
192         {
193                 .dma_filter = pl08x_filter_id,
194                 .dma_tx_param = "uart1_tx",
195                 .dma_rx_param = "uart1_rx",
196         }, {
197                 .dma_filter = pl08x_filter_id,
198                 .dma_tx_param = "uart2_tx",
199                 .dma_rx_param = "uart2_rx",
200         }, {
201                 .dma_filter = pl08x_filter_id,
202                 .dma_tx_param = "uart3_tx",
203                 .dma_rx_param = "uart3_rx",
204         }, {
205                 .dma_filter = pl08x_filter_id,
206                 .dma_tx_param = "uart4_tx",
207                 .dma_rx_param = "uart4_rx",
208         }, {
209                 .dma_filter = pl08x_filter_id,
210                 .dma_tx_param = "uart5_tx",
211                 .dma_rx_param = "uart5_rx",
212         },
213 };
214
215 /* Add SPEAr310 auxdata to pass platform data */
216 static struct of_dev_auxdata spear310_auxdata_lookup[] __initdata = {
217         OF_DEV_AUXDATA("arm,pl022", SPEAR3XX_ICM1_SSP_BASE, NULL,
218                         &pl022_plat_data),
219         OF_DEV_AUXDATA("arm,pl080", SPEAR_ICM3_DMA_BASE, NULL,
220                         &pl080_plat_data),
221         OF_DEV_AUXDATA("arm,pl011", SPEAR310_UART1_BASE, NULL,
222                         &spear310_uart_data[0]),
223         OF_DEV_AUXDATA("arm,pl011", SPEAR310_UART2_BASE, NULL,
224                         &spear310_uart_data[1]),
225         OF_DEV_AUXDATA("arm,pl011", SPEAR310_UART3_BASE, NULL,
226                         &spear310_uart_data[2]),
227         OF_DEV_AUXDATA("arm,pl011", SPEAR310_UART4_BASE, NULL,
228                         &spear310_uart_data[3]),
229         OF_DEV_AUXDATA("arm,pl011", SPEAR310_UART5_BASE, NULL,
230                         &spear310_uart_data[4]),
231         {}
232 };
233
234 static void __init spear310_dt_init(void)
235 {
236         pl080_plat_data.slave_channels = spear310_dma_info;
237         pl080_plat_data.num_slave_channels = ARRAY_SIZE(spear310_dma_info);
238
239         of_platform_populate(NULL, of_default_bus_match_table,
240                         spear310_auxdata_lookup, NULL);
241 }
242
243 static const char * const spear310_dt_board_compat[] = {
244         "st,spear310",
245         "st,spear310-evb",
246         NULL,
247 };
248
249 static void __init spear310_map_io(void)
250 {
251         spear3xx_map_io();
252 }
253
254 DT_MACHINE_START(SPEAR310_DT, "ST SPEAr310 SoC with Flattened Device Tree")
255         .map_io         =       spear310_map_io,
256         .init_time      =       spear3xx_timer_init,
257         .init_machine   =       spear310_dt_init,
258         .restart        =       spear_restart,
259         .dt_compat      =       spear310_dt_board_compat,
260 MACHINE_END