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Commit | Line | Data |
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bd92aa01 WZ |
1 | /* |
2 | * Based on Ocelot Linux port, which is | |
3 | * Copyright 2001 MontaVista Software Inc. | |
4 | * Author: jsun@mvista.com or jsun@junsun.net | |
5 | * | |
6 | * Copyright 2003 ICT CAS | |
7 | * Author: Michael Guo <guoyi@ict.ac.cn> | |
8 | * | |
0bb383a2 | 9 | * Copyright (C) 2007 Lemote Inc. & Institute of Computing Technology |
bd92aa01 WZ |
10 | * Author: Fuxin Zhang, zhangfx@lemote.com |
11 | * | |
f7a904df WZ |
12 | * Copyright (C) 2009 Lemote Inc. |
13 | * Author: Wu Zhangjin, wuzhangjin@gmail.com | |
bd92aa01 | 14 | * |
70342287 RB |
15 | * This program is free software; you can redistribute it and/or modify it |
16 | * under the terms of the GNU General Public License as published by the | |
bd92aa01 WZ |
17 | * Free Software Foundation; either version 2 of the License, or (at your |
18 | * option) any later version. | |
19 | */ | |
26dd3e4f | 20 | #include <linux/export.h> |
bd92aa01 | 21 | #include <asm/bootinfo.h> |
5e983ff6 | 22 | #include <loongson.h> |
1a08f152 | 23 | #include <boot_param.h> |
3adeb256 | 24 | #include <workarounds.h> |
5e983ff6 | 25 | |
1a08f152 | 26 | u32 cpu_clock_freq; |
f8ede0f7 | 27 | EXPORT_SYMBOL(cpu_clock_freq); |
1a08f152 HC |
28 | struct efi_memory_map_loongson *loongson_memmap; |
29 | struct loongson_system_configuration loongson_sysconf; | |
bd92aa01 | 30 | |
140e39c1 | 31 | u64 loongson_chipcfg[MAX_PACKAGES] = {0xffffffffbfc00180}; |
64f09aa9 | 32 | u64 loongson_chiptemp[MAX_PACKAGES]; |
e7841be5 HC |
33 | u64 loongson_freqctrl[MAX_PACKAGES]; |
34 | ||
35 | unsigned long long smp_group[4]; | |
140e39c1 | 36 | |
bd92aa01 WZ |
37 | #define parse_even_earlier(res, option, p) \ |
38 | do { \ | |
c87444af RB |
39 | unsigned int tmp __maybe_unused; \ |
40 | \ | |
bd92aa01 | 41 | if (strncmp(option, (char *)p, strlen(option)) == 0) \ |
1a08f152 | 42 | tmp = kstrtou32((char *)p + strlen(option"="), 10, &res); \ |
bd92aa01 WZ |
43 | } while (0) |
44 | ||
45 | void __init prom_init_env(void) | |
46 | { | |
eb11df47 | 47 | /* pmon passes arguments in 32bit pointers */ |
eb11df47 | 48 | unsigned int processor_id; |
1a08f152 HC |
49 | |
50 | #ifndef CONFIG_LEFI_FIRMWARE_INTERFACE | |
51 | int *_prom_envp; | |
bd92aa01 WZ |
52 | long l; |
53 | ||
54 | /* firmware arguments are initialized in head.S */ | |
55 | _prom_envp = (int *)fw_arg2; | |
56 | ||
57 | l = (long)*_prom_envp; | |
58 | while (l != 0) { | |
bd92aa01 WZ |
59 | parse_even_earlier(cpu_clock_freq, "cpuclock", l); |
60 | parse_even_earlier(memsize, "memsize", l); | |
61 | parse_even_earlier(highmemsize, "highmemsize", l); | |
62 | _prom_envp++; | |
63 | l = (long)*_prom_envp; | |
64 | } | |
65 | if (memsize == 0) | |
66 | memsize = 256; | |
fc2ca674 GR |
67 | |
68 | loongson_sysconf.nr_uarts = 1; | |
69 | ||
1a08f152 HC |
70 | pr_info("memsize=%u, highmemsize=%u\n", memsize, highmemsize); |
71 | #else | |
72 | struct boot_params *boot_p; | |
73 | struct loongson_params *loongson_p; | |
3adeb256 | 74 | struct system_loongson *esys; |
1a08f152 HC |
75 | struct efi_cpuinfo_loongson *ecpu; |
76 | struct irq_source_routing_table *eirq_source; | |
77 | ||
78 | /* firmware arguments are initialized in head.S */ | |
79 | boot_p = (struct boot_params *)fw_arg2; | |
80 | loongson_p = &(boot_p->efi.smbios.lp); | |
81 | ||
3adeb256 HC |
82 | esys = (struct system_loongson *) |
83 | ((u64)loongson_p + loongson_p->system_offset); | |
1a08f152 HC |
84 | ecpu = (struct efi_cpuinfo_loongson *) |
85 | ((u64)loongson_p + loongson_p->cpu_offset); | |
86 | eirq_source = (struct irq_source_routing_table *) | |
87 | ((u64)loongson_p + loongson_p->irq_offset); | |
88 | loongson_memmap = (struct efi_memory_map_loongson *) | |
89 | ((u64)loongson_p + loongson_p->memory_offset); | |
90 | ||
91 | cpu_clock_freq = ecpu->cpu_clock_freq; | |
92 | loongson_sysconf.cputype = ecpu->cputype; | |
140e39c1 | 93 | if (ecpu->cputype == Loongson_3A) { |
c4617318 HC |
94 | loongson_sysconf.cores_per_node = 4; |
95 | loongson_sysconf.cores_per_package = 4; | |
e7841be5 HC |
96 | smp_group[0] = 0x900000003ff01000; |
97 | smp_group[1] = 0x900010003ff01000; | |
98 | smp_group[2] = 0x900020003ff01000; | |
99 | smp_group[3] = 0x900030003ff01000; | |
140e39c1 HC |
100 | loongson_chipcfg[0] = 0x900000001fe00180; |
101 | loongson_chipcfg[1] = 0x900010001fe00180; | |
102 | loongson_chipcfg[2] = 0x900020001fe00180; | |
103 | loongson_chipcfg[3] = 0x900030001fe00180; | |
64f09aa9 HC |
104 | loongson_chiptemp[0] = 0x900000001fe0019c; |
105 | loongson_chiptemp[1] = 0x900010001fe0019c; | |
106 | loongson_chiptemp[2] = 0x900020001fe0019c; | |
107 | loongson_chiptemp[3] = 0x900030001fe0019c; | |
b2edcfc8 HC |
108 | loongson_freqctrl[0] = 0x900000001fe001d0; |
109 | loongson_freqctrl[1] = 0x900010001fe001d0; | |
110 | loongson_freqctrl[2] = 0x900020001fe001d0; | |
111 | loongson_freqctrl[3] = 0x900030001fe001d0; | |
e7841be5 | 112 | loongson_sysconf.ht_control_base = 0x90000EFDFB000000; |
3adeb256 | 113 | loongson_sysconf.workarounds = WORKAROUND_CPUFREQ; |
e7841be5 HC |
114 | } else if (ecpu->cputype == Loongson_3B) { |
115 | loongson_sysconf.cores_per_node = 4; /* One chip has 2 nodes */ | |
116 | loongson_sysconf.cores_per_package = 8; | |
117 | smp_group[0] = 0x900000003ff01000; | |
118 | smp_group[1] = 0x900010003ff05000; | |
119 | smp_group[2] = 0x900020003ff09000; | |
120 | smp_group[3] = 0x900030003ff0d000; | |
121 | loongson_chipcfg[0] = 0x900000001fe00180; | |
122 | loongson_chipcfg[1] = 0x900020001fe00180; | |
123 | loongson_chipcfg[2] = 0x900040001fe00180; | |
124 | loongson_chipcfg[3] = 0x900060001fe00180; | |
64f09aa9 HC |
125 | loongson_chiptemp[0] = 0x900000001fe0019c; |
126 | loongson_chiptemp[1] = 0x900020001fe0019c; | |
127 | loongson_chiptemp[2] = 0x900040001fe0019c; | |
128 | loongson_chiptemp[3] = 0x900060001fe0019c; | |
e7841be5 HC |
129 | loongson_freqctrl[0] = 0x900000001fe001d0; |
130 | loongson_freqctrl[1] = 0x900020001fe001d0; | |
131 | loongson_freqctrl[2] = 0x900040001fe001d0; | |
132 | loongson_freqctrl[3] = 0x900060001fe001d0; | |
133 | loongson_sysconf.ht_control_base = 0x90001EFDFB000000; | |
3adeb256 | 134 | loongson_sysconf.workarounds = WORKAROUND_CPUHOTPLUG; |
140e39c1 | 135 | } else { |
c4617318 HC |
136 | loongson_sysconf.cores_per_node = 1; |
137 | loongson_sysconf.cores_per_package = 1; | |
140e39c1 HC |
138 | loongson_chipcfg[0] = 0x900000001fe00180; |
139 | } | |
140 | ||
1a08f152 | 141 | loongson_sysconf.nr_cpus = ecpu->nr_cpus; |
ec0f8d3f HC |
142 | loongson_sysconf.boot_cpu_id = ecpu->cpu_startup_core_id; |
143 | loongson_sysconf.reserved_cpus_mask = ecpu->reserved_cores_mask; | |
1a08f152 HC |
144 | if (ecpu->nr_cpus > NR_CPUS || ecpu->nr_cpus == 0) |
145 | loongson_sysconf.nr_cpus = NR_CPUS; | |
c4617318 HC |
146 | loongson_sysconf.nr_nodes = (loongson_sysconf.nr_cpus + |
147 | loongson_sysconf.cores_per_node - 1) / | |
148 | loongson_sysconf.cores_per_node; | |
1a08f152 HC |
149 | |
150 | loongson_sysconf.pci_mem_start_addr = eirq_source->pci_mem_start_addr; | |
151 | loongson_sysconf.pci_mem_end_addr = eirq_source->pci_mem_end_addr; | |
152 | loongson_sysconf.pci_io_base = eirq_source->pci_io_start_addr; | |
153 | loongson_sysconf.dma_mask_bits = eirq_source->dma_mask_bits; | |
154 | if (loongson_sysconf.dma_mask_bits < 32 || | |
155 | loongson_sysconf.dma_mask_bits > 64) | |
156 | loongson_sysconf.dma_mask_bits = 32; | |
157 | ||
158 | loongson_sysconf.restart_addr = boot_p->reset_system.ResetWarm; | |
159 | loongson_sysconf.poweroff_addr = boot_p->reset_system.Shutdown; | |
160 | loongson_sysconf.suspend_addr = boot_p->reset_system.DoSuspend; | |
161 | ||
1a08f152 HC |
162 | loongson_sysconf.vgabios_addr = boot_p->efi.smbios.vga_bios; |
163 | pr_debug("Shutdown Addr: %llx, Restart Addr: %llx, VBIOS Addr: %llx\n", | |
164 | loongson_sysconf.poweroff_addr, loongson_sysconf.restart_addr, | |
165 | loongson_sysconf.vgabios_addr); | |
3adeb256 HC |
166 | |
167 | memset(loongson_sysconf.ecname, 0, 32); | |
168 | if (esys->has_ec) | |
169 | memcpy(loongson_sysconf.ecname, esys->ec_name, 32); | |
170 | loongson_sysconf.workarounds |= esys->workarounds; | |
171 | ||
172 | loongson_sysconf.nr_uarts = esys->nr_uarts; | |
173 | if (esys->nr_uarts < 1 || esys->nr_uarts > MAX_UARTS) | |
174 | loongson_sysconf.nr_uarts = 1; | |
175 | memcpy(loongson_sysconf.uarts, esys->uarts, | |
176 | sizeof(struct uart_device) * loongson_sysconf.nr_uarts); | |
177 | ||
178 | loongson_sysconf.nr_sensors = esys->nr_sensors; | |
179 | if (loongson_sysconf.nr_sensors > MAX_SENSORS) | |
180 | loongson_sysconf.nr_sensors = 0; | |
181 | if (loongson_sysconf.nr_sensors) | |
182 | memcpy(loongson_sysconf.sensors, esys->sensors, | |
183 | sizeof(struct sensor_device) * loongson_sysconf.nr_sensors); | |
1a08f152 | 184 | #endif |
eb11df47 WZ |
185 | if (cpu_clock_freq == 0) { |
186 | processor_id = (¤t_cpu_data)->processor_id; | |
187 | switch (processor_id & PRID_REV_MASK) { | |
188 | case PRID_REV_LOONGSON2E: | |
189 | cpu_clock_freq = 533080000; | |
190 | break; | |
191 | case PRID_REV_LOONGSON2F: | |
192 | cpu_clock_freq = 797000000; | |
193 | break; | |
b2edcfc8 HC |
194 | case PRID_REV_LOONGSON3A_R1: |
195 | case PRID_REV_LOONGSON3A_R2: | |
1a08f152 HC |
196 | cpu_clock_freq = 900000000; |
197 | break; | |
e7841be5 HC |
198 | case PRID_REV_LOONGSON3B_R1: |
199 | case PRID_REV_LOONGSON3B_R2: | |
200 | cpu_clock_freq = 1000000000; | |
201 | break; | |
eb11df47 WZ |
202 | default: |
203 | cpu_clock_freq = 100000000; | |
204 | break; | |
205 | } | |
206 | } | |
1a08f152 | 207 | pr_info("CpuClock = %u\n", cpu_clock_freq); |
bd92aa01 | 208 | } |