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12#include <linux/init.h>
13#include <generated/utsrelease.h>
14#include <linux/pci.h>
15#include <linux/of.h>
16#include <asm/prom.h>
17#include <asm/time.h>
18#include <asm/machdep.h>
19#include <asm/rtas.h>
20#include <asm/mpc52xx.h>
21
22#define EFIKA_PLATFORM_NAME "Efika"
23
24
25
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27
28
29#ifdef CONFIG_PCI
30
31
32
33
34static int rtas_read_config(struct pci_bus *bus, unsigned int devfn, int offset,
35 int len, u32 * val)
36{
37 struct pci_controller *hose = pci_bus_to_host(bus);
38 unsigned long addr = (offset & 0xff) | ((devfn & 0xff) << 8)
39 | (((bus->number - hose->first_busno) & 0xff) << 16)
40 | (hose->global_number << 24);
41 int ret = -1;
42 int rval;
43
44 rval = rtas_call(rtas_token("read-pci-config"), 2, 2, &ret, addr, len);
45 *val = ret;
46 return rval ? PCIBIOS_DEVICE_NOT_FOUND : PCIBIOS_SUCCESSFUL;
47}
48
49static int rtas_write_config(struct pci_bus *bus, unsigned int devfn,
50 int offset, int len, u32 val)
51{
52 struct pci_controller *hose = pci_bus_to_host(bus);
53 unsigned long addr = (offset & 0xff) | ((devfn & 0xff) << 8)
54 | (((bus->number - hose->first_busno) & 0xff) << 16)
55 | (hose->global_number << 24);
56 int rval;
57
58 rval = rtas_call(rtas_token("write-pci-config"), 3, 1, NULL,
59 addr, len, val);
60 return rval ? PCIBIOS_DEVICE_NOT_FOUND : PCIBIOS_SUCCESSFUL;
61}
62
63static struct pci_ops rtas_pci_ops = {
64 .read = rtas_read_config,
65 .write = rtas_write_config,
66};
67
68
69static void __init efika_pcisetup(void)
70{
71 const int *bus_range;
72 int len;
73 struct pci_controller *hose;
74 struct device_node *root;
75 struct device_node *pcictrl;
76
77 root = of_find_node_by_path("/");
78 if (root == NULL) {
79 printk(KERN_WARNING EFIKA_PLATFORM_NAME
80 ": Unable to find the root node\n");
81 return;
82 }
83
84 for (pcictrl = NULL;;) {
85 pcictrl = of_get_next_child(root, pcictrl);
86 if ((pcictrl == NULL) || (strcmp(pcictrl->name, "pci") == 0))
87 break;
88 }
89
90 of_node_put(root);
91
92 if (pcictrl == NULL) {
93 printk(KERN_WARNING EFIKA_PLATFORM_NAME
94 ": Unable to find the PCI bridge node\n");
95 return;
96 }
97
98 bus_range = of_get_property(pcictrl, "bus-range", &len);
99 if (bus_range == NULL || len < 2 * sizeof(int)) {
100 printk(KERN_WARNING EFIKA_PLATFORM_NAME
101 ": Can't get bus-range for %s\n", pcictrl->full_name);
102 goto out_put;
103 }
104
105 if (bus_range[1] == bus_range[0])
106 printk(KERN_INFO EFIKA_PLATFORM_NAME ": PCI bus %d",
107 bus_range[0]);
108 else
109 printk(KERN_INFO EFIKA_PLATFORM_NAME ": PCI buses %d..%d",
110 bus_range[0], bus_range[1]);
111 printk(" controlled by %s\n", pcictrl->full_name);
112 printk("\n");
113
114 hose = pcibios_alloc_controller(pcictrl);
115 if (!hose) {
116 printk(KERN_WARNING EFIKA_PLATFORM_NAME
117 ": Can't allocate PCI controller structure for %s\n",
118 pcictrl->full_name);
119 goto out_put;
120 }
121
122 hose->first_busno = bus_range[0];
123 hose->last_busno = bus_range[1];
124 hose->ops = &rtas_pci_ops;
125
126 pci_process_bridge_OF_ranges(hose, pcictrl, 0);
127 return;
128out_put:
129 of_node_put(pcictrl);
130}
131
132#else
133static void __init efika_pcisetup(void)
134{}
135#endif
136
137
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140
141
142
143static void efika_show_cpuinfo(struct seq_file *m)
144{
145 struct device_node *root;
146 const char *revision;
147 const char *codegendescription;
148 const char *codegenvendor;
149
150 root = of_find_node_by_path("/");
151 if (!root)
152 return;
153
154 revision = of_get_property(root, "revision", NULL);
155 codegendescription = of_get_property(root, "CODEGEN,description", NULL);
156 codegenvendor = of_get_property(root, "CODEGEN,vendor", NULL);
157
158 if (codegendescription)
159 seq_printf(m, "machine\t\t: %s\n", codegendescription);
160 else
161 seq_printf(m, "machine\t\t: Efika\n");
162
163 if (revision)
164 seq_printf(m, "revision\t: %s\n", revision);
165
166 if (codegenvendor)
167 seq_printf(m, "vendor\t\t: %s\n", codegenvendor);
168
169 of_node_put(root);
170}
171
172#ifdef CONFIG_PM
173static void efika_suspend_prepare(void __iomem *mbar)
174{
175 u8 pin = 4;
176 u8 level = 1;
177
178 mpc52xx_set_wakeup_gpio(pin, level);
179}
180#endif
181
182static void __init efika_setup_arch(void)
183{
184 rtas_initialize();
185
186
187 mpc52xx_map_common_devices();
188
189 efika_pcisetup();
190
191#ifdef CONFIG_PM
192 mpc52xx_suspend.board_suspend_prepare = efika_suspend_prepare;
193 mpc52xx_pm_init();
194#endif
195
196 if (ppc_md.progress)
197 ppc_md.progress("Linux/PPC " UTS_RELEASE " running on Efika ;-)\n", 0x0);
198}
199
200static int __init efika_probe(void)
201{
202 char *model = of_get_flat_dt_prop(of_get_flat_dt_root(),
203 "model", NULL);
204
205 if (model == NULL)
206 return 0;
207 if (strcmp(model, "EFIKA5K2"))
208 return 0;
209
210 ISA_DMA_THRESHOLD = ~0L;
211 DMA_MODE_READ = 0x44;
212 DMA_MODE_WRITE = 0x48;
213
214 return 1;
215}
216
217define_machine(efika)
218{
219 .name = EFIKA_PLATFORM_NAME,
220 .probe = efika_probe,
221 .setup_arch = efika_setup_arch,
222 .init = mpc52xx_declare_of_platform_devices,
223 .show_cpuinfo = efika_show_cpuinfo,
224 .init_IRQ = mpc52xx_init_irq,
225 .get_irq = mpc52xx_get_irq,
226 .restart = rtas_restart,
227 .power_off = rtas_power_off,
228 .halt = rtas_halt,
229 .set_rtc_time = rtas_set_rtc_time,
230 .get_rtc_time = rtas_get_rtc_time,
231 .progress = rtas_progress,
232 .get_boot_time = rtas_get_boot_time,
233 .calibrate_decr = generic_calibrate_decr,
234#ifdef CONFIG_PCI
235 .phys_mem_access_prot = pci_phys_mem_access_prot,
236#endif
237};
238
239
