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2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
c2882bb1 | 2 | /* |
72c916ae | 3 | * Copyright (C) 2006-2010, 2012-2013 Freescale Semiconductor, Inc. |
c141b38f | 4 | * All rights reserved. |
c2882bb1 AF |
5 | * |
6 | * Author: Andy Fleming <afleming@freescale.com> | |
7 | * | |
8 | * Based on 83xx/mpc8360e_pb.c by: | |
9 | * Li Yang <LeoLi@freescale.com> | |
10 | * Yin Olivia <Hong-hua.Yin@freescale.com> | |
11 | * | |
12 | * Description: | |
23f510bc | 13 | * MPC85xx MDS board specific routines. |
c2882bb1 AF |
14 | */ |
15 | ||
16 | #include <linux/stddef.h> | |
17 | #include <linux/kernel.h> | |
18 | #include <linux/init.h> | |
19 | #include <linux/errno.h> | |
20 | #include <linux/reboot.h> | |
21 | #include <linux/pci.h> | |
22 | #include <linux/kdev_t.h> | |
23 | #include <linux/major.h> | |
24 | #include <linux/console.h> | |
25 | #include <linux/delay.h> | |
26 | #include <linux/seq_file.h> | |
c2882bb1 | 27 | #include <linux/initrd.h> |
c2882bb1 | 28 | #include <linux/fsl_devices.h> |
882407b9 JL |
29 | #include <linux/of_platform.h> |
30 | #include <linux/of_device.h> | |
94833a42 | 31 | #include <linux/phy.h> |
95f72d1e | 32 | #include <linux/memblock.h> |
94848654 | 33 | #include <linux/fsl/guts.h> |
c2882bb1 | 34 | |
60063497 | 35 | #include <linux/atomic.h> |
c2882bb1 AF |
36 | #include <asm/time.h> |
37 | #include <asm/io.h> | |
38 | #include <asm/machdep.h> | |
c2882bb1 | 39 | #include <asm/pci-bridge.h> |
c2882bb1 AF |
40 | #include <asm/irq.h> |
41 | #include <mm/mmu_decl.h> | |
42 | #include <asm/prom.h> | |
43 | #include <asm/udbg.h> | |
44 | #include <sysdev/fsl_soc.h> | |
3f6c5dae | 45 | #include <sysdev/fsl_pci.h> |
9b9d401b | 46 | #include <sysdev/simple_gpio.h> |
7aa1aa6e ZQ |
47 | #include <soc/fsl/qe/qe.h> |
48 | #include <soc/fsl/qe/qe_ic.h> | |
c2882bb1 | 49 | #include <asm/mpic.h> |
152d0182 | 50 | #include <asm/swiotlb.h> |
582d3e09 | 51 | #include "smp.h" |
c2882bb1 | 52 | |
543a07b1 DES |
53 | #include "mpc85xx.h" |
54 | ||
c2882bb1 AF |
55 | #undef DEBUG |
56 | #ifdef DEBUG | |
57 | #define DBG(fmt...) udbg_printf(fmt) | |
58 | #else | |
59 | #define DBG(fmt...) | |
60 | #endif | |
61 | ||
93c4ea38 AS |
62 | #if IS_BUILTIN(CONFIG_PHYLIB) |
63 | ||
94833a42 AF |
64 | #define MV88E1111_SCR 0x10 |
65 | #define MV88E1111_SCR_125CLK 0x0010 | |
66 | static int mpc8568_fixup_125_clock(struct phy_device *phydev) | |
67 | { | |
68 | int scr; | |
69 | int err; | |
70 | ||
71 | /* Workaround for the 125 CLK Toggle */ | |
72 | scr = phy_read(phydev, MV88E1111_SCR); | |
73 | ||
74 | if (scr < 0) | |
75 | return scr; | |
76 | ||
77 | err = phy_write(phydev, MV88E1111_SCR, scr & ~(MV88E1111_SCR_125CLK)); | |
78 | ||
79 | if (err) | |
80 | return err; | |
81 | ||
82 | err = phy_write(phydev, MII_BMCR, BMCR_RESET); | |
83 | ||
84 | if (err) | |
85 | return err; | |
86 | ||
87 | scr = phy_read(phydev, MV88E1111_SCR); | |
88 | ||
89 | if (scr < 0) | |
29827b02 | 90 | return scr; |
94833a42 AF |
91 | |
92 | err = phy_write(phydev, MV88E1111_SCR, scr | 0x0008); | |
93 | ||
94 | return err; | |
95 | } | |
96 | ||
97 | static int mpc8568_mds_phy_fixups(struct phy_device *phydev) | |
98 | { | |
99 | int temp; | |
100 | int err; | |
101 | ||
102 | /* Errata */ | |
103 | err = phy_write(phydev,29, 0x0006); | |
104 | ||
105 | if (err) | |
106 | return err; | |
107 | ||
108 | temp = phy_read(phydev, 30); | |
109 | ||
110 | if (temp < 0) | |
111 | return temp; | |
112 | ||
113 | temp = (temp & (~0x8000)) | 0x4000; | |
114 | err = phy_write(phydev,30, temp); | |
115 | ||
116 | if (err) | |
117 | return err; | |
118 | ||
119 | err = phy_write(phydev,29, 0x000a); | |
120 | ||
121 | if (err) | |
122 | return err; | |
123 | ||
124 | temp = phy_read(phydev, 30); | |
125 | ||
126 | if (temp < 0) | |
127 | return temp; | |
128 | ||
129 | temp = phy_read(phydev, 30); | |
130 | ||
131 | if (temp < 0) | |
132 | return temp; | |
133 | ||
134 | temp &= ~0x0020; | |
135 | ||
136 | err = phy_write(phydev,30,temp); | |
137 | ||
138 | if (err) | |
139 | return err; | |
140 | ||
141 | /* Disable automatic MDI/MDIX selection */ | |
142 | temp = phy_read(phydev, 16); | |
143 | ||
144 | if (temp < 0) | |
145 | return temp; | |
146 | ||
147 | temp &= ~0x0060; | |
148 | err = phy_write(phydev,16,temp); | |
149 | ||
150 | return err; | |
151 | } | |
152 | ||
93c4ea38 AS |
153 | #endif |
154 | ||
c2882bb1 AF |
155 | /* ************************************************************************ |
156 | * | |
157 | * Setup the architecture | |
158 | * | |
159 | */ | |
dee9ad71 | 160 | #ifdef CONFIG_QUICC_ENGINE |
99d8238f | 161 | static void __init mpc85xx_mds_reset_ucc_phys(void) |
c2882bb1 AF |
162 | { |
163 | struct device_node *np; | |
99d8238f | 164 | static u8 __iomem *bcsr_regs; |
c2882bb1 | 165 | |
c2882bb1 AF |
166 | /* Map BCSR area */ |
167 | np = of_find_node_by_name(NULL, "bcsr"); | |
99d8238f AV |
168 | if (!np) |
169 | return; | |
c2882bb1 | 170 | |
99d8238f AV |
171 | bcsr_regs = of_iomap(np, 0); |
172 | of_node_put(np); | |
173 | if (!bcsr_regs) | |
174 | return; | |
c2882bb1 | 175 | |
99d8238f AV |
176 | if (machine_is(mpc8568_mds)) { |
177 | #define BCSR_UCC1_GETH_EN (0x1 << 7) | |
178 | #define BCSR_UCC2_GETH_EN (0x1 << 7) | |
179 | #define BCSR_UCC1_MODE_MSK (0x3 << 4) | |
180 | #define BCSR_UCC2_MODE_MSK (0x3 << 0) | |
152d0182 | 181 | |
99d8238f AV |
182 | /* Turn off UCC1 & UCC2 */ |
183 | clrbits8(&bcsr_regs[8], BCSR_UCC1_GETH_EN); | |
184 | clrbits8(&bcsr_regs[9], BCSR_UCC2_GETH_EN); | |
185 | ||
186 | /* Mode is RGMII, all bits clear */ | |
187 | clrbits8(&bcsr_regs[11], BCSR_UCC1_MODE_MSK | | |
188 | BCSR_UCC2_MODE_MSK); | |
189 | ||
190 | /* Turn UCC1 & UCC2 on */ | |
191 | setbits8(&bcsr_regs[8], BCSR_UCC1_GETH_EN); | |
192 | setbits8(&bcsr_regs[9], BCSR_UCC2_GETH_EN); | |
193 | } else if (machine_is(mpc8569_mds)) { | |
194 | #define BCSR7_UCC12_GETHnRST (0x1 << 2) | |
195 | #define BCSR8_UEM_MARVELL_RST (0x1 << 1) | |
196 | #define BCSR_UCC_RGMII (0x1 << 6) | |
197 | #define BCSR_UCC_RTBI (0x1 << 5) | |
198 | /* | |
199 | * U-Boot mangles interrupt polarity for Marvell PHYs, | |
200 | * so reset built-in and UEM Marvell PHYs, this puts | |
201 | * the PHYs into their normal state. | |
202 | */ | |
203 | clrbits8(&bcsr_regs[7], BCSR7_UCC12_GETHnRST); | |
204 | setbits8(&bcsr_regs[8], BCSR8_UEM_MARVELL_RST); | |
205 | ||
206 | setbits8(&bcsr_regs[7], BCSR7_UCC12_GETHnRST); | |
207 | clrbits8(&bcsr_regs[8], BCSR8_UEM_MARVELL_RST); | |
208 | ||
5444d639 | 209 | for_each_compatible_node(np, "network", "ucc_geth") { |
99d8238f AV |
210 | const unsigned int *prop; |
211 | int ucc_num; | |
212 | ||
213 | prop = of_get_property(np, "cell-index", NULL); | |
214 | if (prop == NULL) | |
215 | continue; | |
216 | ||
217 | ucc_num = *prop - 1; | |
218 | ||
219 | prop = of_get_property(np, "phy-connection-type", NULL); | |
220 | if (prop == NULL) | |
221 | continue; | |
222 | ||
223 | if (strcmp("rtbi", (const char *)prop) == 0) | |
224 | clrsetbits_8(&bcsr_regs[7 + ucc_num], | |
225 | BCSR_UCC_RGMII, BCSR_UCC_RTBI); | |
c9438aff | 226 | } |
99d8238f AV |
227 | } else if (machine_is(p1021_mds)) { |
228 | #define BCSR11_ENET_MICRST (0x1 << 5) | |
229 | /* Reset Micrel PHY */ | |
230 | clrbits8(&bcsr_regs[11], BCSR11_ENET_MICRST); | |
231 | setbits8(&bcsr_regs[11], BCSR11_ENET_MICRST); | |
c9438aff | 232 | } |
c2882bb1 | 233 | |
99d8238f AV |
234 | iounmap(bcsr_regs); |
235 | } | |
48936a08 | 236 | |
99d8238f AV |
237 | static void __init mpc85xx_mds_qe_init(void) |
238 | { | |
239 | struct device_node *np; | |
48936a08 | 240 | |
72c916ae | 241 | mpc85xx_qe_init(); |
706f4aa0 | 242 | mpc85xx_qe_par_io_init(); |
99d8238f | 243 | mpc85xx_mds_reset_ucc_phys(); |
48936a08 HW |
244 | |
245 | if (machine_is(p1021_mds)) { | |
48936a08 | 246 | |
9cb6abcb | 247 | struct ccsr_guts __iomem *guts; |
48936a08 | 248 | |
c141b38f | 249 | np = of_find_node_by_name(NULL, "global-utilities"); |
48936a08 | 250 | if (np) { |
c141b38f ZF |
251 | guts = of_iomap(np, 0); |
252 | if (!guts) | |
253 | pr_err("mpc85xx-rdb: could not map global utilities register\n"); | |
254 | else{ | |
48936a08 HW |
255 | /* P1021 has pins muxed for QE and other functions. To |
256 | * enable QE UEC mode, we need to set bit QE0 for UCC1 | |
257 | * in Eth mode, QE0 and QE3 for UCC5 in Eth mode, QE9 | |
8dd11f80 | 258 | * and QE12 for QE MII management signals in PMUXCR |
48936a08 HW |
259 | * register. |
260 | */ | |
c141b38f ZF |
261 | setbits32(&guts->pmuxcr, MPC85xx_PMUXCR_QE(0) | |
262 | MPC85xx_PMUXCR_QE(3) | | |
263 | MPC85xx_PMUXCR_QE(9) | | |
264 | MPC85xx_PMUXCR_QE(12)); | |
265 | iounmap(guts); | |
266 | } | |
48936a08 HW |
267 | of_node_put(np); |
268 | } | |
269 | ||
270 | } | |
99d8238f AV |
271 | } |
272 | ||
273 | static void __init mpc85xx_mds_qeic_init(void) | |
274 | { | |
275 | struct device_node *np; | |
276 | ||
277 | np = of_find_compatible_node(NULL, NULL, "fsl,qe"); | |
278 | if (!of_device_is_available(np)) { | |
279 | of_node_put(np); | |
280 | return; | |
281 | } | |
282 | ||
283 | np = of_find_compatible_node(NULL, NULL, "fsl,qe-ic"); | |
284 | if (!np) { | |
285 | np = of_find_node_by_type(NULL, "qeic"); | |
286 | if (!np) | |
287 | return; | |
288 | } | |
289 | ||
290 | if (machine_is(p1021_mds)) | |
291 | qe_ic_init(np, 0, qe_ic_cascade_low_mpic, | |
292 | qe_ic_cascade_high_mpic); | |
293 | else | |
294 | qe_ic_init(np, 0, qe_ic_cascade_muxed_mpic, NULL); | |
295 | of_node_put(np); | |
296 | } | |
297 | #else | |
99d8238f AV |
298 | static void __init mpc85xx_mds_qe_init(void) { } |
299 | static void __init mpc85xx_mds_qeic_init(void) { } | |
c2882bb1 | 300 | #endif /* CONFIG_QUICC_ENGINE */ |
152d0182 | 301 | |
99d8238f AV |
302 | static void __init mpc85xx_mds_setup_arch(void) |
303 | { | |
99d8238f AV |
304 | if (ppc_md.progress) |
305 | ppc_md.progress("mpc85xx_mds_setup_arch()", 0); | |
306 | ||
99d8238f | 307 | mpc85xx_smp_init(); |
99d8238f AV |
308 | |
309 | mpc85xx_mds_qe_init(); | |
310 | ||
905e75c4 JH |
311 | fsl_pci_assign_primary(); |
312 | ||
313 | swiotlb_detect_4g(); | |
c2882bb1 AF |
314 | } |
315 | ||
93c4ea38 | 316 | #if IS_BUILTIN(CONFIG_PHYLIB) |
94833a42 AF |
317 | |
318 | static int __init board_fixups(void) | |
319 | { | |
aab0d375 | 320 | char phy_id[20]; |
94833a42 AF |
321 | char *compstrs[2] = {"fsl,gianfar-mdio", "fsl,ucc-mdio"}; |
322 | struct device_node *mdio; | |
323 | struct resource res; | |
324 | int i; | |
325 | ||
326 | for (i = 0; i < ARRAY_SIZE(compstrs); i++) { | |
327 | mdio = of_find_compatible_node(NULL, NULL, compstrs[i]); | |
328 | ||
329 | of_address_to_resource(mdio, 0, &res); | |
aab0d375 | 330 | snprintf(phy_id, sizeof(phy_id), "%llx:%02x", |
24a99596 | 331 | (unsigned long long)res.start, 1); |
94833a42 AF |
332 | |
333 | phy_register_fixup_for_id(phy_id, mpc8568_fixup_125_clock); | |
334 | phy_register_fixup_for_id(phy_id, mpc8568_mds_phy_fixups); | |
335 | ||
336 | /* Register a workaround for errata */ | |
aab0d375 | 337 | snprintf(phy_id, sizeof(phy_id), "%llx:%02x", |
24a99596 | 338 | (unsigned long long)res.start, 7); |
94833a42 AF |
339 | phy_register_fixup_for_id(phy_id, mpc8568_mds_phy_fixups); |
340 | ||
341 | of_node_put(mdio); | |
342 | } | |
343 | ||
344 | return 0; | |
345 | } | |
93c4ea38 | 346 | |
ea5130dc | 347 | machine_arch_initcall(mpc8568_mds, board_fixups); |
4b3b42b3 | 348 | machine_arch_initcall(mpc8569_mds, board_fixups); |
94833a42 | 349 | |
93c4ea38 AS |
350 | #endif |
351 | ||
23f510bc | 352 | static int __init mpc85xx_publish_devices(void) |
c2882bb1 | 353 | { |
e98efaf3 AV |
354 | if (machine_is(mpc8568_mds)) |
355 | simple_gpiochip_init("fsl,mpc8568mds-bcsr-gpio"); | |
9b9d401b AV |
356 | if (machine_is(mpc8569_mds)) |
357 | simple_gpiochip_init("fsl,mpc8569mds-bcsr-gpio"); | |
358 | ||
8a95bc8d | 359 | return mpc85xx_common_publish_devices(); |
48936a08 HW |
360 | } |
361 | ||
905e75c4 JH |
362 | machine_arch_initcall(mpc8568_mds, mpc85xx_publish_devices); |
363 | machine_arch_initcall(mpc8569_mds, mpc85xx_publish_devices); | |
364 | machine_arch_initcall(p1021_mds, mpc85xx_common_publish_devices); | |
c2882bb1 | 365 | |
23f510bc | 366 | static void __init mpc85xx_mds_pic_init(void) |
c2882bb1 | 367 | { |
e55d7f73 | 368 | struct mpic *mpic = mpic_alloc(NULL, 0, MPIC_BIG_ENDIAN | |
5019609f | 369 | MPIC_SINGLE_DEST_CPU, |
b533f8ae | 370 | 0, 256, " OpenPIC "); |
c2882bb1 | 371 | BUG_ON(mpic == NULL); |
c2882bb1 | 372 | |
c2882bb1 | 373 | mpic_init(mpic); |
99d8238f | 374 | mpc85xx_mds_qeic_init(); |
c2882bb1 AF |
375 | } |
376 | ||
23f510bc | 377 | static int __init mpc85xx_mds_probe(void) |
c2882bb1 | 378 | { |
56571384 | 379 | return of_machine_is_compatible("MPC85xxMDS"); |
c2882bb1 AF |
380 | } |
381 | ||
ea5130dc HW |
382 | define_machine(mpc8568_mds) { |
383 | .name = "MPC8568 MDS", | |
23f510bc KG |
384 | .probe = mpc85xx_mds_probe, |
385 | .setup_arch = mpc85xx_mds_setup_arch, | |
386 | .init_IRQ = mpc85xx_mds_pic_init, | |
c2882bb1 | 387 | .get_irq = mpic_get_irq, |
c2882bb1 AF |
388 | .calibrate_decr = generic_calibrate_decr, |
389 | .progress = udbg_progress, | |
2af8569d | 390 | #ifdef CONFIG_PCI |
aa3c1121 | 391 | .pcibios_fixup_bus = fsl_pcibios_fixup_bus, |
48b16180 | 392 | .pcibios_fixup_phb = fsl_pcibios_fixup_phb, |
2af8569d | 393 | #endif |
c2882bb1 | 394 | }; |
4b3b42b3 HW |
395 | |
396 | static int __init mpc8569_mds_probe(void) | |
397 | { | |
56571384 | 398 | return of_machine_is_compatible("fsl,MPC8569EMDS"); |
4b3b42b3 HW |
399 | } |
400 | ||
401 | define_machine(mpc8569_mds) { | |
402 | .name = "MPC8569 MDS", | |
403 | .probe = mpc8569_mds_probe, | |
404 | .setup_arch = mpc85xx_mds_setup_arch, | |
405 | .init_IRQ = mpc85xx_mds_pic_init, | |
406 | .get_irq = mpic_get_irq, | |
4b3b42b3 HW |
407 | .calibrate_decr = generic_calibrate_decr, |
408 | .progress = udbg_progress, | |
409 | #ifdef CONFIG_PCI | |
410 | .pcibios_fixup_bus = fsl_pcibios_fixup_bus, | |
48b16180 | 411 | .pcibios_fixup_phb = fsl_pcibios_fixup_phb, |
4b3b42b3 HW |
412 | #endif |
413 | }; | |
48936a08 HW |
414 | |
415 | static int __init p1021_mds_probe(void) | |
416 | { | |
56571384 | 417 | return of_machine_is_compatible("fsl,P1021MDS"); |
48936a08 HW |
418 | |
419 | } | |
420 | ||
421 | define_machine(p1021_mds) { | |
422 | .name = "P1021 MDS", | |
423 | .probe = p1021_mds_probe, | |
424 | .setup_arch = mpc85xx_mds_setup_arch, | |
425 | .init_IRQ = mpc85xx_mds_pic_init, | |
426 | .get_irq = mpic_get_irq, | |
48936a08 HW |
427 | .calibrate_decr = generic_calibrate_decr, |
428 | .progress = udbg_progress, | |
429 | #ifdef CONFIG_PCI | |
430 | .pcibios_fixup_bus = fsl_pcibios_fixup_bus, | |
48b16180 | 431 | .pcibios_fixup_phb = fsl_pcibios_fixup_phb, |
48936a08 HW |
432 | #endif |
433 | }; |