Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 1 | /* |
Paul Mackerras | 35499c0 | 2005-10-22 16:02:39 +1000 | [diff] [blame] | 2 | * Powermac setup and early boot code plus other random bits. |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 3 | * |
| 4 | * PowerPC version |
| 5 | * Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org) |
| 6 | * |
| 7 | * Adapted for Power Macintosh by Paul Mackerras |
Paul Mackerras | 35499c0 | 2005-10-22 16:02:39 +1000 | [diff] [blame] | 8 | * Copyright (C) 1996 Paul Mackerras (paulus@samba.org) |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 9 | * |
| 10 | * Derived from "arch/alpha/kernel/setup.c" |
| 11 | * Copyright (C) 1995 Linus Torvalds |
| 12 | * |
| 13 | * Maintained by Benjamin Herrenschmidt (benh@kernel.crashing.org) |
| 14 | * |
| 15 | * This program is free software; you can redistribute it and/or |
| 16 | * modify it under the terms of the GNU General Public License |
| 17 | * as published by the Free Software Foundation; either version |
| 18 | * 2 of the License, or (at your option) any later version. |
| 19 | * |
| 20 | */ |
| 21 | |
| 22 | /* |
| 23 | * bootup setup stuff.. |
| 24 | */ |
| 25 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 26 | #include <linux/init.h> |
| 27 | #include <linux/errno.h> |
| 28 | #include <linux/sched.h> |
| 29 | #include <linux/kernel.h> |
| 30 | #include <linux/mm.h> |
| 31 | #include <linux/stddef.h> |
| 32 | #include <linux/unistd.h> |
| 33 | #include <linux/ptrace.h> |
| 34 | #include <linux/slab.h> |
| 35 | #include <linux/user.h> |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 36 | #include <linux/tty.h> |
| 37 | #include <linux/string.h> |
| 38 | #include <linux/delay.h> |
| 39 | #include <linux/ioport.h> |
| 40 | #include <linux/major.h> |
| 41 | #include <linux/initrd.h> |
| 42 | #include <linux/vt_kern.h> |
| 43 | #include <linux/console.h> |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 44 | #include <linux/pci.h> |
| 45 | #include <linux/adb.h> |
| 46 | #include <linux/cuda.h> |
| 47 | #include <linux/pmu.h> |
| 48 | #include <linux/irq.h> |
| 49 | #include <linux/seq_file.h> |
| 50 | #include <linux/root_dev.h> |
| 51 | #include <linux/bitops.h> |
| 52 | #include <linux/suspend.h> |
Jon Loeliger | 5f867dc | 2007-11-14 04:13:03 +1100 | [diff] [blame] | 53 | #include <linux/of_device.h> |
| 54 | #include <linux/of_platform.h> |
David S. Miller | d9b2b2a | 2008-02-13 16:56:49 -0800 | [diff] [blame] | 55 | #include <linux/lmb.h> |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 56 | |
| 57 | #include <asm/reg.h> |
| 58 | #include <asm/sections.h> |
| 59 | #include <asm/prom.h> |
| 60 | #include <asm/system.h> |
| 61 | #include <asm/pgtable.h> |
| 62 | #include <asm/io.h> |
Michael Ellerman | 3d1229d | 2005-11-14 23:35:00 +1100 | [diff] [blame] | 63 | #include <asm/kexec.h> |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 64 | #include <asm/pci-bridge.h> |
| 65 | #include <asm/ohare.h> |
| 66 | #include <asm/mediabay.h> |
| 67 | #include <asm/machdep.h> |
| 68 | #include <asm/dma.h> |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 69 | #include <asm/cputable.h> |
| 70 | #include <asm/btext.h> |
| 71 | #include <asm/pmac_feature.h> |
| 72 | #include <asm/time.h> |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 73 | #include <asm/mmu_context.h> |
Paul Mackerras | 35499c0 | 2005-10-22 16:02:39 +1000 | [diff] [blame] | 74 | #include <asm/iommu.h> |
| 75 | #include <asm/smu.h> |
| 76 | #include <asm/pmc.h> |
Benjamin Herrenschmidt | 51d3082 | 2005-11-23 17:57:25 +1100 | [diff] [blame] | 77 | #include <asm/udbg.h> |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 78 | |
Paul Mackerras | 3c3f42d | 2005-10-10 22:58:41 +1000 | [diff] [blame] | 79 | #include "pmac.h" |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 80 | |
| 81 | #undef SHOW_GATWICK_IRQS |
| 82 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 83 | int ppc_override_l2cr = 0; |
| 84 | int ppc_override_l2cr_value; |
| 85 | int has_l2cache = 0; |
| 86 | |
Olaf Hering | d2515c8 | 2006-01-22 22:19:02 +0100 | [diff] [blame] | 87 | int pmac_newworld; |
Paul Mackerras | 9b6b563 | 2005-10-06 12:06:20 +1000 | [diff] [blame] | 88 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 89 | static int current_root_goodness = -1; |
| 90 | |
Paul Mackerras | 35499c0 | 2005-10-22 16:02:39 +1000 | [diff] [blame] | 91 | extern struct machdep_calls pmac_md; |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 92 | |
| 93 | #define DEFAULT_ROOT_DEVICE Root_SDA1 /* sda1 - slightly silly choice */ |
| 94 | |
Paul Mackerras | 35499c0 | 2005-10-22 16:02:39 +1000 | [diff] [blame] | 95 | #ifdef CONFIG_PPC64 |
Paul Mackerras | 35499c0 | 2005-10-22 16:02:39 +1000 | [diff] [blame] | 96 | int sccdbg; |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 97 | #endif |
| 98 | |
| 99 | sys_ctrler_t sys_ctrler = SYS_CTRLER_UNKNOWN; |
Paul Mackerras | 35499c0 | 2005-10-22 16:02:39 +1000 | [diff] [blame] | 100 | EXPORT_SYMBOL(sys_ctrler); |
| 101 | |
| 102 | #ifdef CONFIG_PMAC_SMU |
| 103 | unsigned long smu_cmdbuf_abs; |
| 104 | EXPORT_SYMBOL(smu_cmdbuf_abs); |
| 105 | #endif |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 106 | |
| 107 | #ifdef CONFIG_SMP |
| 108 | extern struct smp_ops_t psurge_smp_ops; |
| 109 | extern struct smp_ops_t core99_smp_ops; |
| 110 | #endif /* CONFIG_SMP */ |
| 111 | |
Paul Mackerras | 0dd194d | 2005-10-20 20:48:19 +1000 | [diff] [blame] | 112 | static void pmac_show_cpuinfo(struct seq_file *m) |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 113 | { |
| 114 | struct device_node *np; |
Jeremy Kerr | 018a3d1 | 2006-07-12 15:40:29 +1000 | [diff] [blame] | 115 | const char *pp; |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 116 | int plen; |
Paul Mackerras | 0dd194d | 2005-10-20 20:48:19 +1000 | [diff] [blame] | 117 | int mbmodel; |
| 118 | unsigned int mbflags; |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 119 | char* mbname; |
| 120 | |
Paul Mackerras | 0dd194d | 2005-10-20 20:48:19 +1000 | [diff] [blame] | 121 | mbmodel = pmac_call_feature(PMAC_FTR_GET_MB_INFO, NULL, |
| 122 | PMAC_MB_INFO_MODEL, 0); |
| 123 | mbflags = pmac_call_feature(PMAC_FTR_GET_MB_INFO, NULL, |
| 124 | PMAC_MB_INFO_FLAGS, 0); |
| 125 | if (pmac_call_feature(PMAC_FTR_GET_MB_INFO, NULL, PMAC_MB_INFO_NAME, |
| 126 | (long) &mbname) != 0) |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 127 | mbname = "Unknown"; |
| 128 | |
| 129 | /* find motherboard type */ |
| 130 | seq_printf(m, "machine\t\t: "); |
Paul Mackerras | 0dd194d | 2005-10-20 20:48:19 +1000 | [diff] [blame] | 131 | np = of_find_node_by_path("/"); |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 132 | if (np != NULL) { |
Stephen Rothwell | e2eb639 | 2007-04-03 22:26:41 +1000 | [diff] [blame] | 133 | pp = of_get_property(np, "model", NULL); |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 134 | if (pp != NULL) |
| 135 | seq_printf(m, "%s\n", pp); |
| 136 | else |
| 137 | seq_printf(m, "PowerMac\n"); |
Stephen Rothwell | e2eb639 | 2007-04-03 22:26:41 +1000 | [diff] [blame] | 138 | pp = of_get_property(np, "compatible", &plen); |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 139 | if (pp != NULL) { |
| 140 | seq_printf(m, "motherboard\t:"); |
| 141 | while (plen > 0) { |
| 142 | int l = strlen(pp) + 1; |
| 143 | seq_printf(m, " %s", pp); |
| 144 | plen -= l; |
| 145 | pp += l; |
| 146 | } |
| 147 | seq_printf(m, "\n"); |
| 148 | } |
Paul Mackerras | 0dd194d | 2005-10-20 20:48:19 +1000 | [diff] [blame] | 149 | of_node_put(np); |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 150 | } else |
| 151 | seq_printf(m, "PowerMac\n"); |
| 152 | |
| 153 | /* print parsed model */ |
| 154 | seq_printf(m, "detected as\t: %d (%s)\n", mbmodel, mbname); |
| 155 | seq_printf(m, "pmac flags\t: %08x\n", mbflags); |
| 156 | |
| 157 | /* find l2 cache info */ |
Paul Mackerras | 0dd194d | 2005-10-20 20:48:19 +1000 | [diff] [blame] | 158 | np = of_find_node_by_name(NULL, "l2-cache"); |
| 159 | if (np == NULL) |
| 160 | np = of_find_node_by_type(NULL, "cache"); |
| 161 | if (np != NULL) { |
Stephen Rothwell | e2eb639 | 2007-04-03 22:26:41 +1000 | [diff] [blame] | 162 | const unsigned int *ic = |
| 163 | of_get_property(np, "i-cache-size", NULL); |
| 164 | const unsigned int *dc = |
| 165 | of_get_property(np, "d-cache-size", NULL); |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 166 | seq_printf(m, "L2 cache\t:"); |
| 167 | has_l2cache = 1; |
Stephen Rothwell | e2eb639 | 2007-04-03 22:26:41 +1000 | [diff] [blame] | 168 | if (of_get_property(np, "cache-unified", NULL) != 0 && dc) { |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 169 | seq_printf(m, " %dK unified", *dc / 1024); |
| 170 | } else { |
| 171 | if (ic) |
| 172 | seq_printf(m, " %dK instruction", *ic / 1024); |
| 173 | if (dc) |
| 174 | seq_printf(m, "%s %dK data", |
| 175 | (ic? " +": ""), *dc / 1024); |
| 176 | } |
Stephen Rothwell | e2eb639 | 2007-04-03 22:26:41 +1000 | [diff] [blame] | 177 | pp = of_get_property(np, "ram-type", NULL); |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 178 | if (pp) |
| 179 | seq_printf(m, " %s", pp); |
| 180 | seq_printf(m, "\n"); |
Paul Mackerras | 0dd194d | 2005-10-20 20:48:19 +1000 | [diff] [blame] | 181 | of_node_put(np); |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 182 | } |
| 183 | |
| 184 | /* Indicate newworld/oldworld */ |
| 185 | seq_printf(m, "pmac-generation\t: %s\n", |
| 186 | pmac_newworld ? "NewWorld" : "OldWorld"); |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 187 | } |
| 188 | |
Paul Mackerras | 35499c0 | 2005-10-22 16:02:39 +1000 | [diff] [blame] | 189 | #ifndef CONFIG_ADB_CUDA |
| 190 | int find_via_cuda(void) |
| 191 | { |
Stephen Rothwell | 30686ba | 2007-04-24 13:53:04 +1000 | [diff] [blame] | 192 | struct device_node *dn = of_find_node_by_name(NULL, "via-cuda"); |
| 193 | |
| 194 | if (!dn) |
Paul Mackerras | 35499c0 | 2005-10-22 16:02:39 +1000 | [diff] [blame] | 195 | return 0; |
Stephen Rothwell | 30686ba | 2007-04-24 13:53:04 +1000 | [diff] [blame] | 196 | of_node_put(dn); |
Paul Mackerras | 35499c0 | 2005-10-22 16:02:39 +1000 | [diff] [blame] | 197 | printk("WARNING ! Your machine is CUDA-based but your kernel\n"); |
| 198 | printk(" wasn't compiled with CONFIG_ADB_CUDA option !\n"); |
| 199 | return 0; |
| 200 | } |
| 201 | #endif |
| 202 | |
| 203 | #ifndef CONFIG_ADB_PMU |
| 204 | int find_via_pmu(void) |
| 205 | { |
Stephen Rothwell | 30686ba | 2007-04-24 13:53:04 +1000 | [diff] [blame] | 206 | struct device_node *dn = of_find_node_by_name(NULL, "via-pmu"); |
| 207 | |
| 208 | if (!dn) |
Paul Mackerras | 35499c0 | 2005-10-22 16:02:39 +1000 | [diff] [blame] | 209 | return 0; |
Stephen Rothwell | 30686ba | 2007-04-24 13:53:04 +1000 | [diff] [blame] | 210 | of_node_put(dn); |
Paul Mackerras | 35499c0 | 2005-10-22 16:02:39 +1000 | [diff] [blame] | 211 | printk("WARNING ! Your machine is PMU-based but your kernel\n"); |
| 212 | printk(" wasn't compiled with CONFIG_ADB_PMU option !\n"); |
Paul Mackerras | a575b80 | 2005-10-23 17:23:21 +1000 | [diff] [blame] | 213 | return 0; |
Paul Mackerras | 35499c0 | 2005-10-22 16:02:39 +1000 | [diff] [blame] | 214 | } |
| 215 | #endif |
| 216 | |
| 217 | #ifndef CONFIG_PMAC_SMU |
| 218 | int smu_init(void) |
| 219 | { |
| 220 | /* should check and warn if SMU is present */ |
| 221 | return 0; |
| 222 | } |
| 223 | #endif |
| 224 | |
| 225 | #ifdef CONFIG_PPC32 |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 226 | static volatile u32 *sysctrl_regs; |
| 227 | |
Paul Mackerras | 35499c0 | 2005-10-22 16:02:39 +1000 | [diff] [blame] | 228 | static void __init ohare_init(void) |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 229 | { |
Stephen Rothwell | 30686ba | 2007-04-24 13:53:04 +1000 | [diff] [blame] | 230 | struct device_node *dn; |
| 231 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 232 | /* this area has the CPU identification register |
| 233 | and some registers used by smp boards */ |
| 234 | sysctrl_regs = (volatile u32 *) ioremap(0xf8000000, 0x1000); |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 235 | |
Paul Mackerras | 35499c0 | 2005-10-22 16:02:39 +1000 | [diff] [blame] | 236 | /* |
| 237 | * Turn on the L2 cache. |
| 238 | * We assume that we have a PSX memory controller iff |
| 239 | * we have an ohare I/O controller. |
| 240 | */ |
Stephen Rothwell | 30686ba | 2007-04-24 13:53:04 +1000 | [diff] [blame] | 241 | dn = of_find_node_by_name(NULL, "ohare"); |
| 242 | if (dn) { |
| 243 | of_node_put(dn); |
Paul Mackerras | 35499c0 | 2005-10-22 16:02:39 +1000 | [diff] [blame] | 244 | if (((sysctrl_regs[2] >> 24) & 0xf) >= 3) { |
| 245 | if (sysctrl_regs[4] & 0x10) |
| 246 | sysctrl_regs[4] |= 0x04000020; |
| 247 | else |
| 248 | sysctrl_regs[4] |= 0x04000000; |
| 249 | if(has_l2cache) |
| 250 | printk(KERN_INFO "Level 2 cache enabled\n"); |
| 251 | } |
| 252 | } |
| 253 | } |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 254 | |
Paul Mackerras | 35499c0 | 2005-10-22 16:02:39 +1000 | [diff] [blame] | 255 | static void __init l2cr_init(void) |
| 256 | { |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 257 | /* Checks "l2cr-value" property in the registry */ |
| 258 | if (cpu_has_feature(CPU_FTR_L2CR)) { |
Stephen Rothwell | 1658ab6 | 2007-04-24 13:51:59 +1000 | [diff] [blame] | 259 | struct device_node *np = of_find_node_by_name(NULL, "cpus"); |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 260 | if (np == 0) |
Stephen Rothwell | 1658ab6 | 2007-04-24 13:51:59 +1000 | [diff] [blame] | 261 | np = of_find_node_by_type(NULL, "cpu"); |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 262 | if (np != 0) { |
Jeremy Kerr | 018a3d1 | 2006-07-12 15:40:29 +1000 | [diff] [blame] | 263 | const unsigned int *l2cr = |
Stephen Rothwell | e2eb639 | 2007-04-03 22:26:41 +1000 | [diff] [blame] | 264 | of_get_property(np, "l2cr-value", NULL); |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 265 | if (l2cr != 0) { |
| 266 | ppc_override_l2cr = 1; |
| 267 | ppc_override_l2cr_value = *l2cr; |
| 268 | _set_L2CR(0); |
| 269 | _set_L2CR(ppc_override_l2cr_value); |
| 270 | } |
Stephen Rothwell | 1658ab6 | 2007-04-24 13:51:59 +1000 | [diff] [blame] | 271 | of_node_put(np); |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 272 | } |
| 273 | } |
| 274 | |
| 275 | if (ppc_override_l2cr) |
Paul Mackerras | 35499c0 | 2005-10-22 16:02:39 +1000 | [diff] [blame] | 276 | printk(KERN_INFO "L2CR overridden (0x%x), " |
| 277 | "backside cache is %s\n", |
| 278 | ppc_override_l2cr_value, |
| 279 | (ppc_override_l2cr_value & 0x80000000) |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 280 | ? "enabled" : "disabled"); |
Paul Mackerras | 35499c0 | 2005-10-22 16:02:39 +1000 | [diff] [blame] | 281 | } |
| 282 | #endif |
| 283 | |
Arnd Bergmann | ff38e7c | 2006-01-11 00:00:03 +0000 | [diff] [blame] | 284 | static void __init pmac_setup_arch(void) |
Paul Mackerras | 35499c0 | 2005-10-22 16:02:39 +1000 | [diff] [blame] | 285 | { |
Paul Mackerras | a575b80 | 2005-10-23 17:23:21 +1000 | [diff] [blame] | 286 | struct device_node *cpu, *ic; |
Jeremy Kerr | 018a3d1 | 2006-07-12 15:40:29 +1000 | [diff] [blame] | 287 | const int *fp; |
Paul Mackerras | 35499c0 | 2005-10-22 16:02:39 +1000 | [diff] [blame] | 288 | unsigned long pvr; |
| 289 | |
| 290 | pvr = PVR_VER(mfspr(SPRN_PVR)); |
| 291 | |
| 292 | /* Set loops_per_jiffy to a half-way reasonable value, |
| 293 | for use until calibrate_delay gets called. */ |
| 294 | loops_per_jiffy = 50000000 / HZ; |
| 295 | cpu = of_find_node_by_type(NULL, "cpu"); |
| 296 | if (cpu != NULL) { |
Stephen Rothwell | e2eb639 | 2007-04-03 22:26:41 +1000 | [diff] [blame] | 297 | fp = of_get_property(cpu, "clock-frequency", NULL); |
Paul Mackerras | 35499c0 | 2005-10-22 16:02:39 +1000 | [diff] [blame] | 298 | if (fp != NULL) { |
| 299 | if (pvr >= 0x30 && pvr < 0x80) |
| 300 | /* PPC970 etc. */ |
| 301 | loops_per_jiffy = *fp / (3 * HZ); |
| 302 | else if (pvr == 4 || pvr >= 8) |
| 303 | /* 604, G3, G4 etc. */ |
| 304 | loops_per_jiffy = *fp / HZ; |
| 305 | else |
| 306 | /* 601, 603, etc. */ |
| 307 | loops_per_jiffy = *fp / (2 * HZ); |
| 308 | } |
| 309 | of_node_put(cpu); |
| 310 | } |
| 311 | |
Paul Mackerras | a575b80 | 2005-10-23 17:23:21 +1000 | [diff] [blame] | 312 | /* See if newworld or oldworld */ |
Paul Mackerras | bfab101 | 2005-10-27 22:45:33 +1000 | [diff] [blame] | 313 | for (ic = NULL; (ic = of_find_all_nodes(ic)) != NULL; ) |
Stephen Rothwell | e2eb639 | 2007-04-03 22:26:41 +1000 | [diff] [blame] | 314 | if (of_get_property(ic, "interrupt-controller", NULL)) |
Paul Mackerras | bfab101 | 2005-10-27 22:45:33 +1000 | [diff] [blame] | 315 | break; |
Olaf Hering | d2515c8 | 2006-01-22 22:19:02 +0100 | [diff] [blame] | 316 | if (ic) { |
| 317 | pmac_newworld = 1; |
Paul Mackerras | a575b80 | 2005-10-23 17:23:21 +1000 | [diff] [blame] | 318 | of_node_put(ic); |
Olaf Hering | d2515c8 | 2006-01-22 22:19:02 +0100 | [diff] [blame] | 319 | } |
Paul Mackerras | a575b80 | 2005-10-23 17:23:21 +1000 | [diff] [blame] | 320 | |
Paul Mackerras | 35499c0 | 2005-10-22 16:02:39 +1000 | [diff] [blame] | 321 | /* Lookup PCI hosts */ |
| 322 | pmac_pci_init(); |
| 323 | |
| 324 | #ifdef CONFIG_PPC32 |
| 325 | ohare_init(); |
| 326 | l2cr_init(); |
| 327 | #endif /* CONFIG_PPC32 */ |
| 328 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 329 | find_via_cuda(); |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 330 | find_via_pmu(); |
Paul Mackerras | 35499c0 | 2005-10-22 16:02:39 +1000 | [diff] [blame] | 331 | smu_init(); |
| 332 | |
Tony Breeds | 21e38df | 2008-04-29 11:42:32 +1000 | [diff] [blame] | 333 | #if defined(CONFIG_NVRAM) || defined(CONFIG_NVRAM_MODULE) || \ |
| 334 | defined(CONFIG_PPC64) |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 335 | pmac_nvram_init(); |
| 336 | #endif |
Paul Mackerras | 35499c0 | 2005-10-22 16:02:39 +1000 | [diff] [blame] | 337 | |
| 338 | #ifdef CONFIG_PPC32 |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 339 | #ifdef CONFIG_BLK_DEV_INITRD |
| 340 | if (initrd_start) |
| 341 | ROOT_DEV = Root_RAM0; |
| 342 | else |
| 343 | #endif |
| 344 | ROOT_DEV = DEFAULT_ROOT_DEVICE; |
Paul Mackerras | 35499c0 | 2005-10-22 16:02:39 +1000 | [diff] [blame] | 345 | #endif |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 346 | |
| 347 | #ifdef CONFIG_SMP |
| 348 | /* Check for Core99 */ |
Stephen Rothwell | 30686ba | 2007-04-24 13:53:04 +1000 | [diff] [blame] | 349 | ic = of_find_node_by_name(NULL, "uni-n"); |
| 350 | if (!ic) |
| 351 | ic = of_find_node_by_name(NULL, "u3"); |
| 352 | if (!ic) |
| 353 | ic = of_find_node_by_name(NULL, "u4"); |
| 354 | if (ic) { |
| 355 | of_node_put(ic); |
Paul Mackerras | 7ed476d | 2005-10-19 21:44:51 +1000 | [diff] [blame] | 356 | smp_ops = &core99_smp_ops; |
Stephen Rothwell | 30686ba | 2007-04-24 13:53:04 +1000 | [diff] [blame] | 357 | } |
Paul Mackerras | 35499c0 | 2005-10-22 16:02:39 +1000 | [diff] [blame] | 358 | #ifdef CONFIG_PPC32 |
Paul Mackerras | c63c4fa | 2007-06-07 22:42:19 +1000 | [diff] [blame] | 359 | else { |
| 360 | /* |
| 361 | * We have to set bits in cpu_possible_map here since the |
| 362 | * secondary CPU(s) aren't in the device tree, and |
| 363 | * setup_per_cpu_areas only allocates per-cpu data for |
| 364 | * CPUs in the cpu_possible_map. |
| 365 | */ |
| 366 | int cpu; |
| 367 | |
| 368 | for (cpu = 1; cpu < 4 && cpu < NR_CPUS; ++cpu) |
| 369 | cpu_set(cpu, cpu_possible_map); |
Paul Mackerras | 7ed476d | 2005-10-19 21:44:51 +1000 | [diff] [blame] | 370 | smp_ops = &psurge_smp_ops; |
Paul Mackerras | c63c4fa | 2007-06-07 22:42:19 +1000 | [diff] [blame] | 371 | } |
Paul Mackerras | 35499c0 | 2005-10-22 16:02:39 +1000 | [diff] [blame] | 372 | #endif |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 373 | #endif /* CONFIG_SMP */ |
Benjamin Herrenschmidt | e822250 | 2006-03-28 23:15:54 +1100 | [diff] [blame] | 374 | |
| 375 | #ifdef CONFIG_ADB |
| 376 | if (strstr(cmd_line, "adb_sync")) { |
| 377 | extern int __adb_probe_sync; |
| 378 | __adb_probe_sync = 1; |
| 379 | } |
| 380 | #endif /* CONFIG_ADB */ |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 381 | } |
| 382 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 383 | #ifdef CONFIG_SCSI |
Li Yang | 405861a | 2007-05-23 11:28:03 +0800 | [diff] [blame] | 384 | void note_scsi_host(struct device_node *node, void *host) |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 385 | { |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 386 | } |
Paul Mackerras | 9b6b563 | 2005-10-06 12:06:20 +1000 | [diff] [blame] | 387 | EXPORT_SYMBOL(note_scsi_host); |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 388 | #endif |
| 389 | |
Paul Mackerras | 35499c0 | 2005-10-22 16:02:39 +1000 | [diff] [blame] | 390 | static int initializing = 1; |
| 391 | |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 392 | static int pmac_late_init(void) |
| 393 | { |
| 394 | initializing = 0; |
Johannes Berg | d9333af | 2007-05-03 06:33:51 +1000 | [diff] [blame] | 395 | /* this is udbg (which is __init) and we can later use it during |
| 396 | * cpu hotplug (in smp_core99_kick_cpu) */ |
| 397 | ppc_md.progress = NULL; |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 398 | return 0; |
| 399 | } |
Grant Likely | d518b71 | 2008-01-03 06:14:28 +1100 | [diff] [blame] | 400 | machine_late_initcall(powermac, pmac_late_init); |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 401 | |
Stephen Rothwell | d741803 | 2007-10-04 12:00:28 +1000 | [diff] [blame] | 402 | /* |
| 403 | * This is __init_refok because we check for "initializing" before |
| 404 | * touching any of the __init sensitive things and "initializing" |
| 405 | * will be false after __init time. This can't be __init because it |
| 406 | * can be called whenever a disk is first accessed. |
| 407 | */ |
| 408 | void __init_refok note_bootable_part(dev_t dev, int part, int goodness) |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 409 | { |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 410 | char *p; |
| 411 | |
| 412 | if (!initializing) |
| 413 | return; |
| 414 | if ((goodness <= current_root_goodness) && |
| 415 | ROOT_DEV != DEFAULT_ROOT_DEVICE) |
| 416 | return; |
Alon Bar-Lev | b8757b2 | 2007-02-12 00:54:17 -0800 | [diff] [blame] | 417 | p = strstr(boot_command_line, "root="); |
| 418 | if (p != NULL && (p == boot_command_line || p[-1] == ' ')) |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 419 | return; |
| 420 | |
Paul Mackerras | 6ee0d9f | 2007-10-04 13:47:06 +1000 | [diff] [blame] | 421 | ROOT_DEV = dev + part; |
| 422 | current_root_goodness = goodness; |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 423 | } |
| 424 | |
Paul Mackerras | 35499c0 | 2005-10-22 16:02:39 +1000 | [diff] [blame] | 425 | #ifdef CONFIG_ADB_CUDA |
| 426 | static void cuda_restart(void) |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 427 | { |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 428 | struct adb_request req; |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 429 | |
Paul Mackerras | 35499c0 | 2005-10-22 16:02:39 +1000 | [diff] [blame] | 430 | cuda_request(&req, NULL, 2, CUDA_PACKET, CUDA_RESET_SYSTEM); |
| 431 | for (;;) |
| 432 | cuda_poll(); |
| 433 | } |
| 434 | |
| 435 | static void cuda_shutdown(void) |
| 436 | { |
| 437 | struct adb_request req; |
| 438 | |
| 439 | cuda_request(&req, NULL, 2, CUDA_PACKET, CUDA_POWERDOWN); |
| 440 | for (;;) |
| 441 | cuda_poll(); |
| 442 | } |
| 443 | |
| 444 | #else |
| 445 | #define cuda_restart() |
| 446 | #define cuda_shutdown() |
| 447 | #endif |
| 448 | |
| 449 | #ifndef CONFIG_ADB_PMU |
| 450 | #define pmu_restart() |
| 451 | #define pmu_shutdown() |
| 452 | #endif |
| 453 | |
| 454 | #ifndef CONFIG_PMAC_SMU |
| 455 | #define smu_restart() |
| 456 | #define smu_shutdown() |
| 457 | #endif |
| 458 | |
| 459 | static void pmac_restart(char *cmd) |
| 460 | { |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 461 | switch (sys_ctrler) { |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 462 | case SYS_CTRLER_CUDA: |
Paul Mackerras | 35499c0 | 2005-10-22 16:02:39 +1000 | [diff] [blame] | 463 | cuda_restart(); |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 464 | break; |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 465 | case SYS_CTRLER_PMU: |
| 466 | pmu_restart(); |
| 467 | break; |
Paul Mackerras | 35499c0 | 2005-10-22 16:02:39 +1000 | [diff] [blame] | 468 | case SYS_CTRLER_SMU: |
| 469 | smu_restart(); |
| 470 | break; |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 471 | default: ; |
| 472 | } |
| 473 | } |
| 474 | |
Paul Mackerras | 35499c0 | 2005-10-22 16:02:39 +1000 | [diff] [blame] | 475 | static void pmac_power_off(void) |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 476 | { |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 477 | switch (sys_ctrler) { |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 478 | case SYS_CTRLER_CUDA: |
Paul Mackerras | 35499c0 | 2005-10-22 16:02:39 +1000 | [diff] [blame] | 479 | cuda_shutdown(); |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 480 | break; |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 481 | case SYS_CTRLER_PMU: |
| 482 | pmu_shutdown(); |
| 483 | break; |
Paul Mackerras | 35499c0 | 2005-10-22 16:02:39 +1000 | [diff] [blame] | 484 | case SYS_CTRLER_SMU: |
| 485 | smu_shutdown(); |
| 486 | break; |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 487 | default: ; |
| 488 | } |
| 489 | } |
| 490 | |
| 491 | static void |
| 492 | pmac_halt(void) |
| 493 | { |
| 494 | pmac_power_off(); |
| 495 | } |
| 496 | |
Paul Mackerras | 35499c0 | 2005-10-22 16:02:39 +1000 | [diff] [blame] | 497 | /* |
| 498 | * Early initialization. |
| 499 | */ |
| 500 | static void __init pmac_init_early(void) |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 501 | { |
Benjamin Herrenschmidt | 51d3082 | 2005-11-23 17:57:25 +1100 | [diff] [blame] | 502 | /* Enable early btext debug if requested */ |
| 503 | if (strstr(cmd_line, "btextdbg")) { |
| 504 | udbg_adb_init_early(); |
| 505 | register_early_udbg_console(); |
Paul Mackerras | 35499c0 | 2005-10-22 16:02:39 +1000 | [diff] [blame] | 506 | } |
| 507 | |
Benjamin Herrenschmidt | 51d3082 | 2005-11-23 17:57:25 +1100 | [diff] [blame] | 508 | /* Probe motherboard chipset */ |
| 509 | pmac_feature_init(); |
| 510 | |
Benjamin Herrenschmidt | 51d3082 | 2005-11-23 17:57:25 +1100 | [diff] [blame] | 511 | /* Initialize debug stuff */ |
| 512 | udbg_scc_init(!!strstr(cmd_line, "sccdbg")); |
| 513 | udbg_adb_init(!!strstr(cmd_line, "btextdbg")); |
| 514 | |
| 515 | #ifdef CONFIG_PPC64 |
Benjamin Herrenschmidt | 1beb6a7 | 2005-12-14 13:10:10 +1100 | [diff] [blame] | 516 | iommu_init_early_dart(); |
Paul Mackerras | 35499c0 | 2005-10-22 16:02:39 +1000 | [diff] [blame] | 517 | #endif |
| 518 | } |
| 519 | |
Paul Mackerras | 35499c0 | 2005-10-22 16:02:39 +1000 | [diff] [blame] | 520 | static int __init pmac_declare_of_platform_devices(void) |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 521 | { |
Benjamin Herrenschmidt | a28d3af | 2006-01-07 11:35:26 +1100 | [diff] [blame] | 522 | struct device_node *np; |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 523 | |
Benjamin Herrenschmidt | e822250 | 2006-03-28 23:15:54 +1100 | [diff] [blame] | 524 | if (machine_is(chrp)) |
| 525 | return -1; |
| 526 | |
Benjamin Herrenschmidt | 730745a | 2006-01-07 11:30:44 +1100 | [diff] [blame] | 527 | np = of_find_node_by_name(NULL, "valkyrie"); |
Paul Mackerras | 35499c0 | 2005-10-22 16:02:39 +1000 | [diff] [blame] | 528 | if (np) |
| 529 | of_platform_device_create(np, "valkyrie", NULL); |
Benjamin Herrenschmidt | 730745a | 2006-01-07 11:30:44 +1100 | [diff] [blame] | 530 | np = of_find_node_by_name(NULL, "platinum"); |
Paul Mackerras | 35499c0 | 2005-10-22 16:02:39 +1000 | [diff] [blame] | 531 | if (np) |
| 532 | of_platform_device_create(np, "platinum", NULL); |
Paul Mackerras | 35499c0 | 2005-10-22 16:02:39 +1000 | [diff] [blame] | 533 | np = of_find_node_by_type(NULL, "smu"); |
| 534 | if (np) { |
| 535 | of_platform_device_create(np, "smu", NULL); |
| 536 | of_node_put(np); |
| 537 | } |
Paul Mackerras | 14cf11a | 2005-09-26 16:04:21 +1000 | [diff] [blame] | 538 | |
| 539 | return 0; |
| 540 | } |
Grant Likely | d518b71 | 2008-01-03 06:14:28 +1100 | [diff] [blame] | 541 | machine_device_initcall(powermac, pmac_declare_of_platform_devices); |
Paul Mackerras | 35499c0 | 2005-10-22 16:02:39 +1000 | [diff] [blame] | 542 | |
Benjamin Herrenschmidt | 025d791 | 2008-07-28 13:49:15 +1000 | [diff] [blame] | 543 | #ifdef CONFIG_SERIAL_PMACZILOG_CONSOLE |
| 544 | /* |
| 545 | * This is called very early, as part of console_init() (typically just after |
| 546 | * time_init()). This function is respondible for trying to find a good |
| 547 | * default console on serial ports. It tries to match the open firmware |
| 548 | * default output with one of the available serial console drivers. |
| 549 | */ |
| 550 | static int __init check_pmac_serial_console(void) |
| 551 | { |
| 552 | struct device_node *prom_stdout = NULL; |
| 553 | int offset = 0; |
| 554 | const char *name; |
| 555 | #ifdef CONFIG_SERIAL_PMACZILOG_TTYS |
| 556 | char *devname = "ttyS"; |
| 557 | #else |
| 558 | char *devname = "ttyPZ"; |
| 559 | #endif |
| 560 | |
| 561 | pr_debug(" -> check_pmac_serial_console()\n"); |
| 562 | |
| 563 | /* The user has requested a console so this is already set up. */ |
| 564 | if (strstr(boot_command_line, "console=")) { |
| 565 | pr_debug(" console was specified !\n"); |
| 566 | return -EBUSY; |
| 567 | } |
| 568 | |
| 569 | if (!of_chosen) { |
| 570 | pr_debug(" of_chosen is NULL !\n"); |
| 571 | return -ENODEV; |
| 572 | } |
| 573 | |
| 574 | /* We are getting a weird phandle from OF ... */ |
| 575 | /* ... So use the full path instead */ |
| 576 | name = of_get_property(of_chosen, "linux,stdout-path", NULL); |
| 577 | if (name == NULL) { |
| 578 | pr_debug(" no linux,stdout-path !\n"); |
| 579 | return -ENODEV; |
| 580 | } |
| 581 | prom_stdout = of_find_node_by_path(name); |
| 582 | if (!prom_stdout) { |
| 583 | pr_debug(" can't find stdout package %s !\n", name); |
| 584 | return -ENODEV; |
| 585 | } |
| 586 | pr_debug("stdout is %s\n", prom_stdout->full_name); |
| 587 | |
| 588 | name = of_get_property(prom_stdout, "name", NULL); |
| 589 | if (!name) { |
| 590 | pr_debug(" stdout package has no name !\n"); |
| 591 | goto not_found; |
| 592 | } |
| 593 | |
| 594 | if (strcmp(name, "ch-a") == 0) |
| 595 | offset = 0; |
| 596 | else if (strcmp(name, "ch-b") == 0) |
| 597 | offset = 1; |
| 598 | else |
| 599 | goto not_found; |
| 600 | of_node_put(prom_stdout); |
| 601 | |
| 602 | pr_debug("Found serial console at %s%d\n", devname, offset); |
| 603 | |
| 604 | return add_preferred_console(devname, offset, NULL); |
| 605 | |
| 606 | not_found: |
| 607 | pr_debug("No preferred console found !\n"); |
| 608 | of_node_put(prom_stdout); |
| 609 | return -ENODEV; |
| 610 | } |
| 611 | console_initcall(check_pmac_serial_console); |
| 612 | |
| 613 | #endif /* CONFIG_SERIAL_PMACZILOG_CONSOLE */ |
| 614 | |
Paul Mackerras | 35499c0 | 2005-10-22 16:02:39 +1000 | [diff] [blame] | 615 | /* |
| 616 | * Called very early, MMU is off, device-tree isn't unflattened |
| 617 | */ |
Benjamin Herrenschmidt | e822250 | 2006-03-28 23:15:54 +1100 | [diff] [blame] | 618 | static int __init pmac_probe(void) |
Paul Mackerras | 35499c0 | 2005-10-22 16:02:39 +1000 | [diff] [blame] | 619 | { |
Benjamin Herrenschmidt | e822250 | 2006-03-28 23:15:54 +1100 | [diff] [blame] | 620 | unsigned long root = of_get_flat_dt_root(); |
| 621 | |
| 622 | if (!of_flat_dt_is_compatible(root, "Power Macintosh") && |
| 623 | !of_flat_dt_is_compatible(root, "MacRISC")) |
Paul Mackerras | 35499c0 | 2005-10-22 16:02:39 +1000 | [diff] [blame] | 624 | return 0; |
| 625 | |
Benjamin Herrenschmidt | e822250 | 2006-03-28 23:15:54 +1100 | [diff] [blame] | 626 | #ifdef CONFIG_PPC64 |
Paul Mackerras | 35499c0 | 2005-10-22 16:02:39 +1000 | [diff] [blame] | 627 | /* |
| 628 | * On U3, the DART (iommu) must be allocated now since it |
| 629 | * has an impact on htab_initialize (due to the large page it |
| 630 | * occupies having to be broken up so the DART itself is not |
| 631 | * part of the cacheable linar mapping |
| 632 | */ |
Benjamin Herrenschmidt | 1beb6a7 | 2005-12-14 13:10:10 +1100 | [diff] [blame] | 633 | alloc_dart_table(); |
Michael Ellerman | 7d0daae | 2006-06-23 18:16:38 +1000 | [diff] [blame] | 634 | |
| 635 | hpte_init_native(); |
Paul Mackerras | 35499c0 | 2005-10-22 16:02:39 +1000 | [diff] [blame] | 636 | #endif |
| 637 | |
Benjamin Herrenschmidt | e822250 | 2006-03-28 23:15:54 +1100 | [diff] [blame] | 638 | #ifdef CONFIG_PPC32 |
| 639 | /* isa_io_base gets set in pmac_pci_init */ |
Benjamin Herrenschmidt | e822250 | 2006-03-28 23:15:54 +1100 | [diff] [blame] | 640 | ISA_DMA_THRESHOLD = ~0L; |
| 641 | DMA_MODE_READ = 1; |
| 642 | DMA_MODE_WRITE = 2; |
Benjamin Herrenschmidt | e822250 | 2006-03-28 23:15:54 +1100 | [diff] [blame] | 643 | #endif /* CONFIG_PPC32 */ |
| 644 | |
Paul Mackerras | 35499c0 | 2005-10-22 16:02:39 +1000 | [diff] [blame] | 645 | #ifdef CONFIG_PMAC_SMU |
| 646 | /* |
| 647 | * SMU based G5s need some memory below 2Gb, at least the current |
| 648 | * driver needs that. We have to allocate it now. We allocate 4k |
| 649 | * (1 small page) for now. |
| 650 | */ |
| 651 | smu_cmdbuf_abs = lmb_alloc_base(4096, 4096, 0x80000000UL); |
| 652 | #endif /* CONFIG_PMAC_SMU */ |
| 653 | |
| 654 | return 1; |
| 655 | } |
| 656 | |
| 657 | #ifdef CONFIG_PPC64 |
Benjamin Herrenschmidt | 51d3082 | 2005-11-23 17:57:25 +1100 | [diff] [blame] | 658 | /* Move that to pci.c */ |
| 659 | static int pmac_pci_probe_mode(struct pci_bus *bus) |
Paul Mackerras | 35499c0 | 2005-10-22 16:02:39 +1000 | [diff] [blame] | 660 | { |
| 661 | struct device_node *node = bus->sysdata; |
| 662 | |
| 663 | /* We need to use normal PCI probing for the AGP bus, |
Benjamin Herrenschmidt | 1beb6a7 | 2005-12-14 13:10:10 +1100 | [diff] [blame] | 664 | * since the device for the AGP bridge isn't in the tree. |
Benjamin Herrenschmidt | 444532d | 2007-12-20 14:55:01 +1100 | [diff] [blame] | 665 | * Same for the PCIe host on U4 and the HT host bridge. |
Benjamin Herrenschmidt | 1beb6a7 | 2005-12-14 13:10:10 +1100 | [diff] [blame] | 666 | */ |
Stephen Rothwell | 55b61fe | 2007-05-03 17:26:52 +1000 | [diff] [blame] | 667 | if (bus->self == NULL && (of_device_is_compatible(node, "u3-agp") || |
Benjamin Herrenschmidt | 444532d | 2007-12-20 14:55:01 +1100 | [diff] [blame] | 668 | of_device_is_compatible(node, "u4-pcie") || |
| 669 | of_device_is_compatible(node, "u3-ht"))) |
Paul Mackerras | 35499c0 | 2005-10-22 16:02:39 +1000 | [diff] [blame] | 670 | return PCI_PROBE_NORMAL; |
Paul Mackerras | 35499c0 | 2005-10-22 16:02:39 +1000 | [diff] [blame] | 671 | return PCI_PROBE_DEVTREE; |
| 672 | } |
Johannes Berg | d9333af | 2007-05-03 06:33:51 +1000 | [diff] [blame] | 673 | |
| 674 | #ifdef CONFIG_HOTPLUG_CPU |
| 675 | /* access per cpu vars from generic smp.c */ |
| 676 | DECLARE_PER_CPU(int, cpu_state); |
| 677 | |
| 678 | static void pmac_cpu_die(void) |
| 679 | { |
| 680 | /* |
| 681 | * turn off as much as possible, we'll be |
| 682 | * kicked out as this will only be invoked |
| 683 | * on core99 platforms for now ... |
| 684 | */ |
| 685 | |
| 686 | printk(KERN_INFO "CPU#%d offline\n", smp_processor_id()); |
| 687 | __get_cpu_var(cpu_state) = CPU_DEAD; |
| 688 | smp_wmb(); |
| 689 | |
| 690 | /* |
| 691 | * during the path that leads here preemption is disabled, |
| 692 | * reenable it now so that when coming up preempt count is |
| 693 | * zero correctly |
| 694 | */ |
| 695 | preempt_enable(); |
| 696 | |
| 697 | /* |
| 698 | * hard-disable interrupts for the non-NAP case, the NAP code |
| 699 | * needs to re-enable interrupts (but soft-disables them) |
| 700 | */ |
| 701 | hard_irq_disable(); |
| 702 | |
| 703 | while (1) { |
| 704 | /* let's not take timer interrupts too often ... */ |
| 705 | set_dec(0x7fffffff); |
| 706 | |
| 707 | /* should always be true at this point */ |
| 708 | if (cpu_has_feature(CPU_FTR_CAN_NAP)) |
| 709 | power4_cpu_offline_powersave(); |
| 710 | else { |
| 711 | HMT_low(); |
| 712 | HMT_very_low(); |
| 713 | } |
| 714 | } |
| 715 | } |
| 716 | #endif /* CONFIG_HOTPLUG_CPU */ |
| 717 | |
| 718 | #endif /* CONFIG_PPC64 */ |
Paul Mackerras | 35499c0 | 2005-10-22 16:02:39 +1000 | [diff] [blame] | 719 | |
Benjamin Herrenschmidt | e822250 | 2006-03-28 23:15:54 +1100 | [diff] [blame] | 720 | define_machine(powermac) { |
| 721 | .name = "PowerMac", |
Paul Mackerras | 35499c0 | 2005-10-22 16:02:39 +1000 | [diff] [blame] | 722 | .probe = pmac_probe, |
| 723 | .setup_arch = pmac_setup_arch, |
| 724 | .init_early = pmac_init_early, |
| 725 | .show_cpuinfo = pmac_show_cpuinfo, |
Paul Mackerras | 35499c0 | 2005-10-22 16:02:39 +1000 | [diff] [blame] | 726 | .init_IRQ = pmac_pic_init, |
Benjamin Herrenschmidt | cc5d018 | 2005-12-13 18:01:21 +1100 | [diff] [blame] | 727 | .get_irq = NULL, /* changed later */ |
Benjamin Herrenschmidt | f90bb15 | 2006-11-11 17:24:51 +1100 | [diff] [blame] | 728 | .pci_irq_fixup = pmac_pci_irq_fixup, |
Paul Mackerras | 35499c0 | 2005-10-22 16:02:39 +1000 | [diff] [blame] | 729 | .restart = pmac_restart, |
| 730 | .power_off = pmac_power_off, |
| 731 | .halt = pmac_halt, |
| 732 | .time_init = pmac_time_init, |
| 733 | .get_boot_time = pmac_get_boot_time, |
| 734 | .set_rtc_time = pmac_set_rtc_time, |
| 735 | .get_rtc_time = pmac_get_rtc_time, |
| 736 | .calibrate_decr = pmac_calibrate_decr, |
| 737 | .feature_call = pmac_do_feature_call, |
Kumar Gala | be6b843 | 2005-12-20 16:37:07 -0600 | [diff] [blame] | 738 | .progress = udbg_progress, |
Paul Mackerras | 35499c0 | 2005-10-22 16:02:39 +1000 | [diff] [blame] | 739 | #ifdef CONFIG_PPC64 |
Benjamin Herrenschmidt | 51d3082 | 2005-11-23 17:57:25 +1100 | [diff] [blame] | 740 | .pci_probe_mode = pmac_pci_probe_mode, |
Paul Mackerras | a0652fc | 2006-03-27 15:03:03 +1100 | [diff] [blame] | 741 | .power_save = power4_idle, |
Paul Mackerras | 35499c0 | 2005-10-22 16:02:39 +1000 | [diff] [blame] | 742 | .enable_pmcs = power4_enable_pmcs, |
Michael Ellerman | 3d1229d | 2005-11-14 23:35:00 +1100 | [diff] [blame] | 743 | #ifdef CONFIG_KEXEC |
| 744 | .machine_kexec = default_machine_kexec, |
| 745 | .machine_kexec_prepare = default_machine_kexec_prepare, |
Michael Ellerman | cc53291 | 2005-12-04 18:39:43 +1100 | [diff] [blame] | 746 | .machine_crash_shutdown = default_machine_crash_shutdown, |
Paul Mackerras | 35499c0 | 2005-10-22 16:02:39 +1000 | [diff] [blame] | 747 | #endif |
Michael Ellerman | 3d1229d | 2005-11-14 23:35:00 +1100 | [diff] [blame] | 748 | #endif /* CONFIG_PPC64 */ |
Paul Mackerras | 35499c0 | 2005-10-22 16:02:39 +1000 | [diff] [blame] | 749 | #ifdef CONFIG_PPC32 |
| 750 | .pcibios_enable_device_hook = pmac_pci_enable_device_hook, |
| 751 | .pcibios_after_init = pmac_pcibios_after_init, |
| 752 | .phys_mem_access_prot = pci_phys_mem_access_prot, |
| 753 | #endif |
Benjamin Herrenschmidt | e822250 | 2006-03-28 23:15:54 +1100 | [diff] [blame] | 754 | #if defined(CONFIG_HOTPLUG_CPU) && defined(CONFIG_PPC64) |
Johannes Berg | d9333af | 2007-05-03 06:33:51 +1000 | [diff] [blame] | 755 | .cpu_die = pmac_cpu_die, |
Benjamin Herrenschmidt | e822250 | 2006-03-28 23:15:54 +1100 | [diff] [blame] | 756 | #endif |
Paul Mackerras | 35499c0 | 2005-10-22 16:02:39 +1000 | [diff] [blame] | 757 | }; |