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1da177e4 1/*
49bffbdc
SH
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
4 * for more details.
1da177e4
LT
5 *
6 * PROM library initialisation code.
49bffbdc
SH
7 *
8 * Copyright (C) 1999,2000,2004,2005,2012 MIPS Technologies, Inc.
9 * All rights reserved.
10 * Authors: Carsten Langgaard <carstenl@mips.com>
11 * Maciej W. Rozycki <macro@mips.com>
12 * Steven J. Hill <sjhill@mips.com>
1da177e4 13 */
1da177e4
LT
14#include <linux/init.h>
15#include <linux/string.h>
16#include <linux/kernel.h>
df519e7b 17#include <linux/serial_core.h>
1da177e4 18
e01402b1 19#include <asm/cacheflush.h>
852fe310 20#include <asm/smp-ops.h>
e01402b1 21#include <asm/traps.h>
b431f09d 22#include <asm/fw/fw.h>
237036de 23#include <asm/mips-cm.h>
7dc2834f 24#include <asm/mips-cpc.h>
1da177e4 25#include <asm/mips-boards/generic.h>
1da177e4 26#include <asm/mips-boards/malta.h>
1da177e4 27
d0cdfe24 28static int mips_revision_corid;
b72c0526 29int mips_revision_sconid;
1da177e4
LT
30
31/* Bonito64 system controller register base. */
32unsigned long _pcictrl_bonito;
33unsigned long _pcictrl_bonito_pcicfg;
34
35/* GT64120 system controller register base */
36unsigned long _pcictrl_gt64120;
37
38/* MIPS System controller register base */
39unsigned long _pcictrl_msc;
40
1da177e4
LT
41#ifdef CONFIG_SERIAL_8250_CONSOLE
42static void __init console_config(void)
43{
44 char console_string[40];
45 int baud = 0;
46 char parity = '\0', bits = '\0', flow = '\0';
47 char *s;
48
23a91de4
PB
49 s = fw_getenv("modetty0");
50 if (s) {
51 while (*s >= '0' && *s <= '9')
52 baud = baud*10 + *s++ - '0';
53 if (*s == ',')
54 s++;
55 if (*s)
56 parity = *s++;
57 if (*s == ',')
58 s++;
59 if (*s)
60 bits = *s++;
61 if (*s == ',')
62 s++;
63 if (*s == 'h')
1da177e4 64 flow = 'r';
23a91de4
PB
65 }
66 if (baud == 0)
67 baud = 38400;
68 if (parity != 'n' && parity != 'o' && parity != 'e')
69 parity = 'n';
70 if (bits != '7' && bits != '8')
71 bits = '8';
72 if (flow == '\0')
73 flow = 'r';
74
75 if ((strstr(fw_getcmdline(), "earlycon=")) == NULL) {
76 sprintf(console_string, "uart8250,io,0x3f8,%d%c%c", baud,
77 parity, bits);
df519e7b 78 setup_earlycon(console_string);
23a91de4
PB
79 }
80
81 if ((strstr(fw_getcmdline(), "console=")) == NULL) {
49bffbdc
SH
82 sprintf(console_string, " console=ttyS0,%d%c%c%c", baud,
83 parity, bits, flow);
b431f09d 84 strcat(fw_getcmdline(), console_string);
36a88530 85 pr_info("Config serial console:%s\n", console_string);
1da177e4
LT
86 }
87}
88#endif
89
cd2675fb 90static void __init mips_nmi_setup(void)
e01402b1
RB
91{
92 void *base;
93 extern char except_vec_nmi;
94
95 base = cpu_has_veic ?
96 (void *)(CAC_BASE + 0xa80) :
97 (void *)(CAC_BASE + 0x380);
98 memcpy(base, &except_vec_nmi, 0x80);
99 flush_icache_range((unsigned long)base, (unsigned long)base + 0x80);
100}
101
33d69d2a 102static void __init mips_ejtag_setup(void)
e01402b1
RB
103{
104 void *base;
105 extern char except_vec_ejtag_debug;
106
107 base = cpu_has_veic ?
108 (void *)(CAC_BASE + 0xa00) :
109 (void *)(CAC_BASE + 0x300);
110 memcpy(base, &except_vec_ejtag_debug, 0x80);
111 flush_icache_range((unsigned long)base, (unsigned long)base + 0x80);
112}
113
15d45cce 114phys_addr_t mips_cpc_default_phys_base(void)
7dc2834f
PB
115{
116 return CPC_BASE_ADDR;
117}
118
1da177e4
LT
119void __init prom_init(void)
120{
1da177e4
LT
121 mips_display_message("LINUX");
122
1da177e4
LT
123 /*
124 * early setup of _pcictrl_bonito so that we can determine
125 * the system controller on a CORE_EMUL board
126 */
127 _pcictrl_bonito = (unsigned long)ioremap(BONITO_REG_BASE, BONITO_REG_SIZE);
128
129 mips_revision_corid = MIPS_REVISION_CORID;
130
131 if (mips_revision_corid == MIPS_REVISION_CORID_CORE_EMUL) {
42a3b4f2 132 if (BONITO_PCIDID == 0x0001df53 ||
1da177e4
LT
133 BONITO_PCIDID == 0x0003df53)
134 mips_revision_corid = MIPS_REVISION_CORID_CORE_EMUL_BON;
135 else
136 mips_revision_corid = MIPS_REVISION_CORID_CORE_EMUL_MSC;
137 }
b72c0526
CD
138
139 mips_revision_sconid = MIPS_REVISION_SCONID;
140 if (mips_revision_sconid == MIPS_REVISION_SCON_OTHER) {
141 switch (mips_revision_corid) {
142 case MIPS_REVISION_CORID_QED_RM5261:
143 case MIPS_REVISION_CORID_CORE_LV:
144 case MIPS_REVISION_CORID_CORE_FPGA:
145 case MIPS_REVISION_CORID_CORE_FPGAR2:
146 mips_revision_sconid = MIPS_REVISION_SCON_GT64120;
147 break;
148 case MIPS_REVISION_CORID_CORE_EMUL_BON:
149 case MIPS_REVISION_CORID_BONITO64:
150 case MIPS_REVISION_CORID_CORE_20K:
151 mips_revision_sconid = MIPS_REVISION_SCON_BONITO;
152 break;
153 case MIPS_REVISION_CORID_CORE_MSC:
154 case MIPS_REVISION_CORID_CORE_FPGA2:
b72c0526 155 case MIPS_REVISION_CORID_CORE_24K:
30840244
CD
156 /*
157 * SOCit/ROCit support is essentially identical
158 * but make an attempt to distinguish them
159 */
b72c0526
CD
160 mips_revision_sconid = MIPS_REVISION_SCON_SOCIT;
161 break;
30840244
CD
162 case MIPS_REVISION_CORID_CORE_FPGA3:
163 case MIPS_REVISION_CORID_CORE_FPGA4:
164 case MIPS_REVISION_CORID_CORE_FPGA5:
165 case MIPS_REVISION_CORID_CORE_EMUL_MSC:
b72c0526 166 default:
30840244
CD
167 /* See above */
168 mips_revision_sconid = MIPS_REVISION_SCON_ROCIT;
169 break;
b72c0526
CD
170 }
171 }
172
173 switch (mips_revision_sconid) {
f76b7ea4
RB
174 u32 start, map, mask, data;
175
b72c0526 176 case MIPS_REVISION_SCON_GT64120:
1da177e4
LT
177 /*
178 * Setup the North bridge to do Master byte-lane swapping
179 * when running in bigendian.
180 */
181 _pcictrl_gt64120 = (unsigned long)ioremap(MIPS_GT_BASE, 0x2000);
182
183#ifdef CONFIG_CPU_LITTLE_ENDIAN
184 GT_WRITE(GT_PCI0_CMD_OFS, GT_PCI0_CMD_MBYTESWAP_BIT |
185 GT_PCI0_CMD_SBYTESWAP_BIT);
186#else
187 GT_WRITE(GT_PCI0_CMD_OFS, 0);
188#endif
aa0980b8
MR
189 /* Fix up PCI I/O mapping if necessary (for Atlas). */
190 start = GT_READ(GT_PCI0IOLD_OFS);
191 map = GT_READ(GT_PCI0IOREMAP_OFS);
192 if ((start & map) != 0) {
193 map &= ~start;
194 GT_WRITE(GT_PCI0IOREMAP_OFS, map);
195 }
1da177e4 196
1da177e4 197 set_io_port_base(MALTA_GT_PORT_BASE);
1da177e4
LT
198 break;
199
b72c0526 200 case MIPS_REVISION_SCON_BONITO:
1da177e4
LT
201 _pcictrl_bonito_pcicfg = (unsigned long)ioremap(BONITO_PCICFG_BASE, BONITO_PCICFG_SIZE);
202
203 /*
204 * Disable Bonito IOBC.
205 */
206 BONITO_PCIMEMBASECFG = BONITO_PCIMEMBASECFG &
207 ~(BONITO_PCIMEMBASECFG_MEMBASE0_CACHED |
208 BONITO_PCIMEMBASECFG_MEMBASE1_CACHED);
209
210 /*
211 * Setup the North bridge to do Master byte-lane swapping
212 * when running in bigendian.
213 */
214#ifdef CONFIG_CPU_LITTLE_ENDIAN
215 BONITO_BONGENCFG = BONITO_BONGENCFG &
216 ~(BONITO_BONGENCFG_MSTRBYTESWAP |
217 BONITO_BONGENCFG_BYTESWAP);
218#else
219 BONITO_BONGENCFG = BONITO_BONGENCFG |
220 BONITO_BONGENCFG_MSTRBYTESWAP |
221 BONITO_BONGENCFG_BYTESWAP;
222#endif
223
1da177e4 224 set_io_port_base(MALTA_BONITO_PORT_BASE);
1da177e4
LT
225 break;
226
b72c0526
CD
227 case MIPS_REVISION_SCON_SOCIT:
228 case MIPS_REVISION_SCON_ROCIT:
42a3b4f2 229 _pcictrl_msc = (unsigned long)ioremap(MIPS_MSC01_PCI_REG_BASE, 0x2000);
49bffbdc 230mips_pci_controller:
aa0980b8
MR
231 mb();
232 MSC_READ(MSC01_PCI_CFG, data);
233 MSC_WRITE(MSC01_PCI_CFG, data & ~MSC01_PCI_CFG_EN_BIT);
234 wmb();
235
236 /* Fix up lane swapping. */
1da177e4
LT
237#ifdef CONFIG_CPU_LITTLE_ENDIAN
238 MSC_WRITE(MSC01_PCI_SWAP, MSC01_PCI_SWAP_NOSWAP);
239#else
240 MSC_WRITE(MSC01_PCI_SWAP,
241 MSC01_PCI_SWAP_BYTESWAP << MSC01_PCI_SWAP_IO_SHF |
242 MSC01_PCI_SWAP_BYTESWAP << MSC01_PCI_SWAP_MEM_SHF |
243 MSC01_PCI_SWAP_BYTESWAP << MSC01_PCI_SWAP_BAR0_SHF);
244#endif
2f284eac 245#ifndef CONFIG_EVA
aa0980b8
MR
246 /* Fix up target memory mapping. */
247 MSC_READ(MSC01_PCI_BAR0, mask);
248 MSC_WRITE(MSC01_PCI_P2SCMSKL, mask & MSC01_PCI_BAR0_SIZE_MSK);
2f284eac
LY
249#else
250 /*
251 * Setup the Malta max (2GB) memory for PCI DMA in host bridge
252 * in transparent addressing mode, starting from 0x80000000.
253 */
254 mask = PHYS_OFFSET | (1<<3);
255 MSC_WRITE(MSC01_PCI_BAR0, mask);
aa0980b8 256
2f284eac
LY
257 mask = PHYS_OFFSET;
258 MSC_WRITE(MSC01_PCI_HEAD4, mask);
259 MSC_WRITE(MSC01_PCI_P2SCMSKL, mask);
260 MSC_WRITE(MSC01_PCI_P2SCMAPL, mask);
261#endif
aa0980b8
MR
262 /* Don't handle target retries indefinitely. */
263 if ((data & MSC01_PCI_CFG_MAXRTRY_MSK) ==
264 MSC01_PCI_CFG_MAXRTRY_MSK)
265 data = (data & ~(MSC01_PCI_CFG_MAXRTRY_MSK <<
266 MSC01_PCI_CFG_MAXRTRY_SHF)) |
267 ((MSC01_PCI_CFG_MAXRTRY_MSK - 1) <<
268 MSC01_PCI_CFG_MAXRTRY_SHF);
269
270 wmb();
271 MSC_WRITE(MSC01_PCI_CFG, data);
272 mb();
1da177e4 273
1da177e4 274 set_io_port_base(MALTA_MSC_PORT_BASE);
1da177e4
LT
275 break;
276
b72c0526
CD
277 case MIPS_REVISION_SCON_SOCITSC:
278 case MIPS_REVISION_SCON_SOCITSCP:
279 _pcictrl_msc = (unsigned long)ioremap(MIPS_SOCITSC_PCI_REG_BASE, 0x2000);
280 goto mips_pci_controller;
281
1da177e4 282 default:
b72c0526
CD
283 /* Unknown system controller */
284 mips_display_message("SC Error");
49bffbdc 285 while (1); /* We die here... */
1da177e4 286 }
e01402b1
RB
287 board_nmi_handler_setup = mips_nmi_setup;
288 board_ejtag_handler_setup = mips_ejtag_setup;
289
b431f09d
SH
290 fw_init_cmdline();
291 fw_meminit();
1da177e4
LT
292#ifdef CONFIG_SERIAL_8250_CONSOLE
293 console_config();
294#endif
af3a1f6f 295 /* Early detection of CMP support */
7dc2834f 296 mips_cpc_probe();
852fe310 297
e56b6aa6
PB
298 if (!register_cps_smp_ops())
299 return;
237036de
PB
300 if (!register_cmp_smp_ops())
301 return;
852fe310
RB
302 if (!register_vsmp_smp_ops())
303 return;
ecafe3e9 304 register_up_smp_ops();
1da177e4 305}