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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
66static 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
97static 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 161static 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
237static 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
273static 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
298static void __init mpc85xx_mds_qe_init(void) { }
299static void __init mpc85xx_mds_qeic_init(void) { }
c2882bb1 300#endif /* CONFIG_QUICC_ENGINE */
152d0182 301
99d8238f
AV
302static 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
318static 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 347machine_arch_initcall(mpc8568_mds, board_fixups);
4b3b42b3 348machine_arch_initcall(mpc8569_mds, board_fixups);
94833a42 349
93c4ea38
AS
350#endif
351
23f510bc 352static 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
362machine_arch_initcall(mpc8568_mds, mpc85xx_publish_devices);
363machine_arch_initcall(mpc8569_mds, mpc85xx_publish_devices);
364machine_arch_initcall(p1021_mds, mpc85xx_common_publish_devices);
c2882bb1 365
23f510bc 366static 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 377static int __init mpc85xx_mds_probe(void)
c2882bb1 378{
56571384 379 return of_machine_is_compatible("MPC85xxMDS");
c2882bb1
AF
380}
381
ea5130dc
HW
382define_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
396static int __init mpc8569_mds_probe(void)
397{
56571384 398 return of_machine_is_compatible("fsl,MPC8569EMDS");
4b3b42b3
HW
399}
400
401define_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
415static int __init p1021_mds_probe(void)
416{
56571384 417 return of_machine_is_compatible("fsl,P1021MDS");
48936a08
HW
418
419}
420
421define_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};