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/io.h>
16 #include <linux/platform_device.h>
17 #include <linux/dma-mapping.h>
18 #include <linux/serial_8250.h>
19 #include <linux/mv643xx_i2c.h>
20 #include <linux/ata_platform.h>
21 #include <linux/delay.h>
22 #include <linux/clk-provider.h>
23 #include <linux/cpu.h>
24 #include <linux/platform_data/dsa.h>
25 #include <asm/page.h>
26 #include <asm/setup.h>
27 #include <asm/system_misc.h>
28 #include <asm/mach/arch.h>
29 #include <asm/mach/map.h>
30 #include <asm/mach/time.h>
31 #include <linux/platform_data/mtd-orion_nand.h>
32 #include <linux/platform_data/usb-ehci-orion.h>
33 #include <plat/time.h>
34 #include <plat/common.h>
35
36 #include "bridge-regs.h"
37 #include "common.h"
38 #include "orion5x.h"
39
40 /*****************************************************************************
41 * I/O Address Mapping
42 ****************************************************************************/
43 static struct map_desc orion5x_io_desc[] __initdata = {
44 {
45 .virtual = (unsigned long) ORION5X_REGS_VIRT_BASE,
46 .pfn = __phys_to_pfn(ORION5X_REGS_PHYS_BASE),
47 .length = ORION5X_REGS_SIZE,
48 .type = MT_DEVICE,
49 }, {
50 .virtual = (unsigned long) ORION5X_PCIE_WA_VIRT_BASE,
51 .pfn = __phys_to_pfn(ORION5X_PCIE_WA_PHYS_BASE),
52 .length = ORION5X_PCIE_WA_SIZE,
53 .type = MT_DEVICE,
54 },
55 };
56
orion5x_map_io(void)57 void __init orion5x_map_io(void)
58 {
59 iotable_init(orion5x_io_desc, ARRAY_SIZE(orion5x_io_desc));
60 }
61
62
63 /*****************************************************************************
64 * CLK tree
65 ****************************************************************************/
66 static struct clk *tclk;
67
clk_init(void)68 void __init clk_init(void)
69 {
70 tclk = clk_register_fixed_rate(NULL, "tclk", NULL, 0, orion5x_tclk);
71
72 orion_clkdev_init(tclk);
73 }
74
75 /*****************************************************************************
76 * EHCI0
77 ****************************************************************************/
orion5x_ehci0_init(void)78 void __init orion5x_ehci0_init(void)
79 {
80 orion_ehci_init(ORION5X_USB0_PHYS_BASE, IRQ_ORION5X_USB0_CTRL,
81 EHCI_PHY_ORION);
82 }
83
84
85 /*****************************************************************************
86 * EHCI1
87 ****************************************************************************/
orion5x_ehci1_init(void)88 void __init orion5x_ehci1_init(void)
89 {
90 orion_ehci_1_init(ORION5X_USB1_PHYS_BASE, IRQ_ORION5X_USB1_CTRL);
91 }
92
93
94 /*****************************************************************************
95 * GE00
96 ****************************************************************************/
orion5x_eth_init(struct mv643xx_eth_platform_data * eth_data)97 void __init orion5x_eth_init(struct mv643xx_eth_platform_data *eth_data)
98 {
99 orion_ge00_init(eth_data,
100 ORION5X_ETH_PHYS_BASE, IRQ_ORION5X_ETH_SUM,
101 IRQ_ORION5X_ETH_ERR,
102 MV643XX_TX_CSUM_DEFAULT_LIMIT);
103 }
104
105
106 /*****************************************************************************
107 * Ethernet switch
108 ****************************************************************************/
orion5x_eth_switch_init(struct dsa_chip_data * d)109 void __init orion5x_eth_switch_init(struct dsa_chip_data *d)
110 {
111 orion_ge00_switch_init(d);
112 }
113
114
115 /*****************************************************************************
116 * I2C
117 ****************************************************************************/
orion5x_i2c_init(void)118 void __init orion5x_i2c_init(void)
119 {
120 orion_i2c_init(I2C_PHYS_BASE, IRQ_ORION5X_I2C, 8);
121
122 }
123
124
125 /*****************************************************************************
126 * SATA
127 ****************************************************************************/
orion5x_sata_init(struct mv_sata_platform_data * sata_data)128 void __init orion5x_sata_init(struct mv_sata_platform_data *sata_data)
129 {
130 orion_sata_init(sata_data, ORION5X_SATA_PHYS_BASE, IRQ_ORION5X_SATA);
131 }
132
133
134 /*****************************************************************************
135 * SPI
136 ****************************************************************************/
orion5x_spi_init(void)137 void __init orion5x_spi_init(void)
138 {
139 orion_spi_init(SPI_PHYS_BASE);
140 }
141
142
143 /*****************************************************************************
144 * UART0
145 ****************************************************************************/
orion5x_uart0_init(void)146 void __init orion5x_uart0_init(void)
147 {
148 orion_uart0_init(UART0_VIRT_BASE, UART0_PHYS_BASE,
149 IRQ_ORION5X_UART0, tclk);
150 }
151
152 /*****************************************************************************
153 * UART1
154 ****************************************************************************/
orion5x_uart1_init(void)155 void __init orion5x_uart1_init(void)
156 {
157 orion_uart1_init(UART1_VIRT_BASE, UART1_PHYS_BASE,
158 IRQ_ORION5X_UART1, tclk);
159 }
160
161 /*****************************************************************************
162 * XOR engine
163 ****************************************************************************/
orion5x_xor_init(void)164 void __init orion5x_xor_init(void)
165 {
166 orion_xor0_init(ORION5X_XOR_PHYS_BASE,
167 ORION5X_XOR_PHYS_BASE + 0x200,
168 IRQ_ORION5X_XOR0, IRQ_ORION5X_XOR1);
169 }
170
171 /*****************************************************************************
172 * Cryptographic Engines and Security Accelerator (CESA)
173 ****************************************************************************/
orion5x_crypto_init(void)174 static void __init orion5x_crypto_init(void)
175 {
176 mvebu_mbus_add_window_by_id(ORION_MBUS_SRAM_TARGET,
177 ORION_MBUS_SRAM_ATTR,
178 ORION5X_SRAM_PHYS_BASE,
179 ORION5X_SRAM_SIZE);
180 orion_crypto_init(ORION5X_CRYPTO_PHYS_BASE, ORION5X_SRAM_PHYS_BASE,
181 SZ_8K, IRQ_ORION5X_CESA);
182 }
183
184 /*****************************************************************************
185 * Watchdog
186 ****************************************************************************/
187 static struct resource orion_wdt_resource[] = {
188 DEFINE_RES_MEM(TIMER_PHYS_BASE, 0x04),
189 DEFINE_RES_MEM(RSTOUTn_MASK_PHYS, 0x04),
190 };
191
192 static struct platform_device orion_wdt_device = {
193 .name = "orion_wdt",
194 .id = -1,
195 .num_resources = ARRAY_SIZE(orion_wdt_resource),
196 .resource = orion_wdt_resource,
197 };
198
orion5x_wdt_init(void)199 static void __init orion5x_wdt_init(void)
200 {
201 platform_device_register(&orion_wdt_device);
202 }
203
204
205 /*****************************************************************************
206 * Time handling
207 ****************************************************************************/
orion5x_init_early(void)208 void __init orion5x_init_early(void)
209 {
210 u32 rev, dev;
211 const char *mbus_soc_name;
212
213 orion_time_set_base(TIMER_VIRT_BASE);
214
215 /* Initialize the MBUS driver */
216 orion5x_pcie_id(&dev, &rev);
217 if (dev == MV88F5281_DEV_ID)
218 mbus_soc_name = "marvell,orion5x-88f5281-mbus";
219 else if (dev == MV88F5182_DEV_ID)
220 mbus_soc_name = "marvell,orion5x-88f5182-mbus";
221 else if (dev == MV88F5181_DEV_ID)
222 mbus_soc_name = "marvell,orion5x-88f5181-mbus";
223 else if (dev == MV88F6183_DEV_ID)
224 mbus_soc_name = "marvell,orion5x-88f6183-mbus";
225 else
226 mbus_soc_name = NULL;
227 mvebu_mbus_init(mbus_soc_name, ORION5X_BRIDGE_WINS_BASE,
228 ORION5X_BRIDGE_WINS_SZ,
229 ORION5X_DDR_WINS_BASE, ORION5X_DDR_WINS_SZ);
230 }
231
orion5x_setup_wins(void)232 void orion5x_setup_wins(void)
233 {
234 /*
235 * The PCIe windows will no longer be statically allocated
236 * here once Orion5x is migrated to the pci-mvebu driver.
237 */
238 mvebu_mbus_add_window_remap_by_id(ORION_MBUS_PCIE_IO_TARGET,
239 ORION_MBUS_PCIE_IO_ATTR,
240 ORION5X_PCIE_IO_PHYS_BASE,
241 ORION5X_PCIE_IO_SIZE,
242 ORION5X_PCIE_IO_BUS_BASE);
243 mvebu_mbus_add_window_by_id(ORION_MBUS_PCIE_MEM_TARGET,
244 ORION_MBUS_PCIE_MEM_ATTR,
245 ORION5X_PCIE_MEM_PHYS_BASE,
246 ORION5X_PCIE_MEM_SIZE);
247 mvebu_mbus_add_window_remap_by_id(ORION_MBUS_PCI_IO_TARGET,
248 ORION_MBUS_PCI_IO_ATTR,
249 ORION5X_PCI_IO_PHYS_BASE,
250 ORION5X_PCI_IO_SIZE,
251 ORION5X_PCI_IO_BUS_BASE);
252 mvebu_mbus_add_window_by_id(ORION_MBUS_PCI_MEM_TARGET,
253 ORION_MBUS_PCI_MEM_ATTR,
254 ORION5X_PCI_MEM_PHYS_BASE,
255 ORION5X_PCI_MEM_SIZE);
256 }
257
258 int orion5x_tclk;
259
orion5x_find_tclk(void)260 static int __init orion5x_find_tclk(void)
261 {
262 u32 dev, rev;
263
264 orion5x_pcie_id(&dev, &rev);
265 if (dev == MV88F6183_DEV_ID &&
266 (readl(MPP_RESET_SAMPLE) & 0x00000200) == 0)
267 return 133333333;
268
269 return 166666667;
270 }
271
orion5x_timer_init(void)272 void __init orion5x_timer_init(void)
273 {
274 orion5x_tclk = orion5x_find_tclk();
275
276 orion_time_init(ORION5X_BRIDGE_VIRT_BASE, BRIDGE_INT_TIMER1_CLR,
277 IRQ_ORION5X_BRIDGE, orion5x_tclk);
278 }
279
280
281 /*****************************************************************************
282 * General
283 ****************************************************************************/
284 /*
285 * Identify device ID and rev from PCIe configuration header space '0'.
286 */
orion5x_id(u32 * dev,u32 * rev,char ** dev_name)287 void __init orion5x_id(u32 *dev, u32 *rev, char **dev_name)
288 {
289 orion5x_pcie_id(dev, rev);
290
291 if (*dev == MV88F5281_DEV_ID) {
292 if (*rev == MV88F5281_REV_D2) {
293 *dev_name = "MV88F5281-D2";
294 } else if (*rev == MV88F5281_REV_D1) {
295 *dev_name = "MV88F5281-D1";
296 } else if (*rev == MV88F5281_REV_D0) {
297 *dev_name = "MV88F5281-D0";
298 } else {
299 *dev_name = "MV88F5281-Rev-Unsupported";
300 }
301 } else if (*dev == MV88F5182_DEV_ID) {
302 if (*rev == MV88F5182_REV_A2) {
303 *dev_name = "MV88F5182-A2";
304 } else {
305 *dev_name = "MV88F5182-Rev-Unsupported";
306 }
307 } else if (*dev == MV88F5181_DEV_ID) {
308 if (*rev == MV88F5181_REV_B1) {
309 *dev_name = "MV88F5181-Rev-B1";
310 } else if (*rev == MV88F5181L_REV_A1) {
311 *dev_name = "MV88F5181L-Rev-A1";
312 } else {
313 *dev_name = "MV88F5181(L)-Rev-Unsupported";
314 }
315 } else if (*dev == MV88F6183_DEV_ID) {
316 if (*rev == MV88F6183_REV_B0) {
317 *dev_name = "MV88F6183-Rev-B0";
318 } else {
319 *dev_name = "MV88F6183-Rev-Unsupported";
320 }
321 } else {
322 *dev_name = "Device-Unknown";
323 }
324 }
325
orion5x_init(void)326 void __init orion5x_init(void)
327 {
328 char *dev_name;
329 u32 dev, rev;
330
331 orion5x_id(&dev, &rev, &dev_name);
332 printk(KERN_INFO "Orion ID: %s. TCLK=%d.\n", dev_name, orion5x_tclk);
333
334 /*
335 * Setup Orion address map
336 */
337 orion5x_setup_wins();
338
339 /* Setup root of clk tree */
340 clk_init();
341
342 /*
343 * Don't issue "Wait for Interrupt" instruction if we are
344 * running on D0 5281 silicon.
345 */
346 if (dev == MV88F5281_DEV_ID && rev == MV88F5281_REV_D0) {
347 printk(KERN_INFO "Orion: Applying 5281 D0 WFI workaround.\n");
348 cpu_idle_poll_ctrl(true);
349 }
350
351 /*
352 * The 5082/5181l/5182/6082/6082l/6183 have crypto
353 * while 5180n/5181/5281 don't have crypto.
354 */
355 if ((dev == MV88F5181_DEV_ID && rev >= MV88F5181L_REV_A0) ||
356 dev == MV88F5182_DEV_ID || dev == MV88F6183_DEV_ID)
357 orion5x_crypto_init();
358
359 /*
360 * Register watchdog driver
361 */
362 orion5x_wdt_init();
363 }
364
orion5x_restart(enum reboot_mode mode,const char * cmd)365 void orion5x_restart(enum reboot_mode mode, const char *cmd)
366 {
367 /*
368 * Enable and issue soft reset
369 */
370 orion5x_setbits(RSTOUTn_MASK, (1 << 2));
371 orion5x_setbits(CPU_SOFT_RESET, 1);
372 mdelay(200);
373 orion5x_clrbits(CPU_SOFT_RESET, 1);
374 }
375
376 /*
377 * Many orion-based systems have buggy bootloader implementations.
378 * This is a common fixup for bogus memory tags.
379 */
tag_fixup_mem32(struct tag * t,char ** from)380 void __init tag_fixup_mem32(struct tag *t, char **from)
381 {
382 for (; t->hdr.size; t = tag_next(t))
383 if (t->hdr.tag == ATAG_MEM &&
384 (!t->u.mem.size || t->u.mem.size & ~PAGE_MASK ||
385 t->u.mem.start & ~PAGE_MASK)) {
386 printk(KERN_WARNING
387 "Clearing invalid memory bank %dKB@0x%08x\n",
388 t->u.mem.size / 1024, t->u.mem.start);
389 t->hdr.tag = 0;
390 }
391 }
392