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[~andy/linux] / arch / arm / mach-orion5x / common.c
1 /*
2  * arch/arm/mach-orion5x/common.c
3  *
4  * Core functions for Marvell Orion 5x SoCs
5  *
6  * Maintainer: Tzachi Perelstein <tzachi@marvell.com>
7  *
8  * This file is licensed under the terms of the GNU General Public
9  * License version 2.  This program is licensed "as is" without any
10  * warranty of any kind, whether express or implied.
11  */
12
13 #include <linux/kernel.h>
14 #include <linux/init.h>
15 #include <linux/platform_device.h>
16 #include <linux/dma-mapping.h>
17 #include <linux/serial_8250.h>
18 #include <linux/mv643xx_i2c.h>
19 #include <linux/ata_platform.h>
20 #include <linux/delay.h>
21 #include <net/dsa.h>
22 #include <asm/page.h>
23 #include <asm/setup.h>
24 #include <asm/system_misc.h>
25 #include <asm/timex.h>
26 #include <asm/mach/arch.h>
27 #include <asm/mach/map.h>
28 #include <asm/mach/time.h>
29 #include <mach/bridge-regs.h>
30 #include <mach/hardware.h>
31 #include <mach/orion5x.h>
32 #include <plat/orion_nand.h>
33 #include <plat/ehci-orion.h>
34 #include <plat/time.h>
35 #include <plat/common.h>
36 #include <plat/addr-map.h>
37 #include "common.h"
38
39 /*****************************************************************************
40  * I/O Address Mapping
41  ****************************************************************************/
42 static struct map_desc orion5x_io_desc[] __initdata = {
43         {
44                 .virtual        = ORION5X_REGS_VIRT_BASE,
45                 .pfn            = __phys_to_pfn(ORION5X_REGS_PHYS_BASE),
46                 .length         = ORION5X_REGS_SIZE,
47                 .type           = MT_DEVICE,
48         }, {
49                 .virtual        = ORION5X_PCIE_IO_VIRT_BASE,
50                 .pfn            = __phys_to_pfn(ORION5X_PCIE_IO_PHYS_BASE),
51                 .length         = ORION5X_PCIE_IO_SIZE,
52                 .type           = MT_DEVICE,
53         }, {
54                 .virtual        = ORION5X_PCI_IO_VIRT_BASE,
55                 .pfn            = __phys_to_pfn(ORION5X_PCI_IO_PHYS_BASE),
56                 .length         = ORION5X_PCI_IO_SIZE,
57                 .type           = MT_DEVICE,
58         }, {
59                 .virtual        = ORION5X_PCIE_WA_VIRT_BASE,
60                 .pfn            = __phys_to_pfn(ORION5X_PCIE_WA_PHYS_BASE),
61                 .length         = ORION5X_PCIE_WA_SIZE,
62                 .type           = MT_DEVICE,
63         },
64 };
65
66 void __init orion5x_map_io(void)
67 {
68         iotable_init(orion5x_io_desc, ARRAY_SIZE(orion5x_io_desc));
69 }
70
71
72 /*****************************************************************************
73  * EHCI0
74  ****************************************************************************/
75 void __init orion5x_ehci0_init(void)
76 {
77         orion_ehci_init(ORION5X_USB0_PHYS_BASE, IRQ_ORION5X_USB0_CTRL,
78                         EHCI_PHY_ORION);
79 }
80
81
82 /*****************************************************************************
83  * EHCI1
84  ****************************************************************************/
85 void __init orion5x_ehci1_init(void)
86 {
87         orion_ehci_1_init(ORION5X_USB1_PHYS_BASE, IRQ_ORION5X_USB1_CTRL);
88 }
89
90
91 /*****************************************************************************
92  * GE00
93  ****************************************************************************/
94 void __init orion5x_eth_init(struct mv643xx_eth_platform_data *eth_data)
95 {
96         orion_ge00_init(eth_data,
97                         ORION5X_ETH_PHYS_BASE, IRQ_ORION5X_ETH_SUM,
98                         IRQ_ORION5X_ETH_ERR, orion5x_tclk);
99 }
100
101
102 /*****************************************************************************
103  * Ethernet switch
104  ****************************************************************************/
105 void __init orion5x_eth_switch_init(struct dsa_platform_data *d, int irq)
106 {
107         orion_ge00_switch_init(d, irq);
108 }
109
110
111 /*****************************************************************************
112  * I2C
113  ****************************************************************************/
114 void __init orion5x_i2c_init(void)
115 {
116         orion_i2c_init(I2C_PHYS_BASE, IRQ_ORION5X_I2C, 8);
117
118 }
119
120
121 /*****************************************************************************
122  * SATA
123  ****************************************************************************/
124 void __init orion5x_sata_init(struct mv_sata_platform_data *sata_data)
125 {
126         orion_sata_init(sata_data, ORION5X_SATA_PHYS_BASE, IRQ_ORION5X_SATA);
127 }
128
129
130 /*****************************************************************************
131  * SPI
132  ****************************************************************************/
133 void __init orion5x_spi_init()
134 {
135         orion_spi_init(SPI_PHYS_BASE, orion5x_tclk);
136 }
137
138
139 /*****************************************************************************
140  * UART0
141  ****************************************************************************/
142 void __init orion5x_uart0_init(void)
143 {
144         orion_uart0_init(UART0_VIRT_BASE, UART0_PHYS_BASE,
145                          IRQ_ORION5X_UART0, orion5x_tclk);
146 }
147
148 /*****************************************************************************
149  * UART1
150  ****************************************************************************/
151 void __init orion5x_uart1_init(void)
152 {
153         orion_uart1_init(UART1_VIRT_BASE, UART1_PHYS_BASE,
154                          IRQ_ORION5X_UART1, orion5x_tclk);
155 }
156
157 /*****************************************************************************
158  * XOR engine
159  ****************************************************************************/
160 void __init orion5x_xor_init(void)
161 {
162         orion_xor0_init(ORION5X_XOR_PHYS_BASE,
163                         ORION5X_XOR_PHYS_BASE + 0x200,
164                         IRQ_ORION5X_XOR0, IRQ_ORION5X_XOR1);
165 }
166
167 /*****************************************************************************
168  * Cryptographic Engines and Security Accelerator (CESA)
169  ****************************************************************************/
170 static void __init orion5x_crypto_init(void)
171 {
172         orion5x_setup_sram_win();
173         orion_crypto_init(ORION5X_CRYPTO_PHYS_BASE, ORION5X_SRAM_PHYS_BASE,
174                           SZ_8K, IRQ_ORION5X_CESA);
175 }
176
177 /*****************************************************************************
178  * Watchdog
179  ****************************************************************************/
180 void __init orion5x_wdt_init(void)
181 {
182         orion_wdt_init(orion5x_tclk);
183 }
184
185
186 /*****************************************************************************
187  * Time handling
188  ****************************************************************************/
189 void __init orion5x_init_early(void)
190 {
191         orion_time_set_base(TIMER_VIRT_BASE);
192 }
193
194 int orion5x_tclk;
195
196 int __init orion5x_find_tclk(void)
197 {
198         u32 dev, rev;
199
200         orion5x_pcie_id(&dev, &rev);
201         if (dev == MV88F6183_DEV_ID &&
202             (readl(MPP_RESET_SAMPLE) & 0x00000200) == 0)
203                 return 133333333;
204
205         return 166666667;
206 }
207
208 static void __init orion5x_timer_init(void)
209 {
210         orion5x_tclk = orion5x_find_tclk();
211
212         orion_time_init(ORION5X_BRIDGE_VIRT_BASE, BRIDGE_INT_TIMER1_CLR,
213                         IRQ_ORION5X_BRIDGE, orion5x_tclk);
214 }
215
216 struct sys_timer orion5x_timer = {
217         .init = orion5x_timer_init,
218 };
219
220
221 /*****************************************************************************
222  * General
223  ****************************************************************************/
224 /*
225  * Identify device ID and rev from PCIe configuration header space '0'.
226  */
227 static void __init orion5x_id(u32 *dev, u32 *rev, char **dev_name)
228 {
229         orion5x_pcie_id(dev, rev);
230
231         if (*dev == MV88F5281_DEV_ID) {
232                 if (*rev == MV88F5281_REV_D2) {
233                         *dev_name = "MV88F5281-D2";
234                 } else if (*rev == MV88F5281_REV_D1) {
235                         *dev_name = "MV88F5281-D1";
236                 } else if (*rev == MV88F5281_REV_D0) {
237                         *dev_name = "MV88F5281-D0";
238                 } else {
239                         *dev_name = "MV88F5281-Rev-Unsupported";
240                 }
241         } else if (*dev == MV88F5182_DEV_ID) {
242                 if (*rev == MV88F5182_REV_A2) {
243                         *dev_name = "MV88F5182-A2";
244                 } else {
245                         *dev_name = "MV88F5182-Rev-Unsupported";
246                 }
247         } else if (*dev == MV88F5181_DEV_ID) {
248                 if (*rev == MV88F5181_REV_B1) {
249                         *dev_name = "MV88F5181-Rev-B1";
250                 } else if (*rev == MV88F5181L_REV_A1) {
251                         *dev_name = "MV88F5181L-Rev-A1";
252                 } else {
253                         *dev_name = "MV88F5181(L)-Rev-Unsupported";
254                 }
255         } else if (*dev == MV88F6183_DEV_ID) {
256                 if (*rev == MV88F6183_REV_B0) {
257                         *dev_name = "MV88F6183-Rev-B0";
258                 } else {
259                         *dev_name = "MV88F6183-Rev-Unsupported";
260                 }
261         } else {
262                 *dev_name = "Device-Unknown";
263         }
264 }
265
266 void __init orion5x_init(void)
267 {
268         char *dev_name;
269         u32 dev, rev;
270
271         orion5x_id(&dev, &rev, &dev_name);
272         printk(KERN_INFO "Orion ID: %s. TCLK=%d.\n", dev_name, orion5x_tclk);
273
274         /*
275          * Setup Orion address map
276          */
277         orion5x_setup_cpu_mbus_bridge();
278
279         /*
280          * Don't issue "Wait for Interrupt" instruction if we are
281          * running on D0 5281 silicon.
282          */
283         if (dev == MV88F5281_DEV_ID && rev == MV88F5281_REV_D0) {
284                 printk(KERN_INFO "Orion: Applying 5281 D0 WFI workaround.\n");
285                 disable_hlt();
286         }
287
288         /*
289          * The 5082/5181l/5182/6082/6082l/6183 have crypto
290          * while 5180n/5181/5281 don't have crypto.
291          */
292         if ((dev == MV88F5181_DEV_ID && rev >= MV88F5181L_REV_A0) ||
293             dev == MV88F5182_DEV_ID || dev == MV88F6183_DEV_ID)
294                 orion5x_crypto_init();
295
296         /*
297          * Register watchdog driver
298          */
299         orion5x_wdt_init();
300 }
301
302 void orion5x_restart(char mode, const char *cmd)
303 {
304         /*
305          * Enable and issue soft reset
306          */
307         orion5x_setbits(RSTOUTn_MASK, (1 << 2));
308         orion5x_setbits(CPU_SOFT_RESET, 1);
309         mdelay(200);
310         orion5x_clrbits(CPU_SOFT_RESET, 1);
311 }
312
313 /*
314  * Many orion-based systems have buggy bootloader implementations.
315  * This is a common fixup for bogus memory tags.
316  */
317 void __init tag_fixup_mem32(struct tag *t, char **from,
318                             struct meminfo *meminfo)
319 {
320         for (; t->hdr.size; t = tag_next(t))
321                 if (t->hdr.tag == ATAG_MEM &&
322                     (!t->u.mem.size || t->u.mem.size & ~PAGE_MASK ||
323                      t->u.mem.start & ~PAGE_MASK)) {
324                         printk(KERN_WARNING
325                                "Clearing invalid memory bank %dKB@0x%08x\n",
326                                t->u.mem.size / 1024, t->u.mem.start);
327                         t->hdr.tag = 0;
328                 }
329 }