1
2
3
4
5
6
7
8
9
10
11
12#include <linux/init.h>
13#include <generated/utsrelease.h>
14#include <linux/pci.h>
15#include <linux/of.h>
16#include <asm/dma.h>
17#include <asm/prom.h>
18#include <asm/time.h>
19#include <asm/machdep.h>
20#include <asm/rtas.h>
21#include <asm/mpc52xx.h>
22
23#define EFIKA_PLATFORM_NAME "Efika"
24
25
26
27
28
29
30#ifdef CONFIG_PCI
31
32
33
34
35static int rtas_read_config(struct pci_bus *bus, unsigned int devfn, int offset,
36 int len, u32 * val)
37{
38 struct pci_controller *hose = pci_bus_to_host(bus);
39 unsigned long addr = (offset & 0xff) | ((devfn & 0xff) << 8)
40 | (((bus->number - hose->first_busno) & 0xff) << 16)
41 | (hose->global_number << 24);
42 int ret = -1;
43 int rval;
44
45 rval = rtas_call(rtas_token("read-pci-config"), 2, 2, &ret, addr, len);
46 *val = ret;
47 return rval ? PCIBIOS_DEVICE_NOT_FOUND : PCIBIOS_SUCCESSFUL;
48}
49
50static int rtas_write_config(struct pci_bus *bus, unsigned int devfn,
51 int offset, int len, u32 val)
52{
53 struct pci_controller *hose = pci_bus_to_host(bus);
54 unsigned long addr = (offset & 0xff) | ((devfn & 0xff) << 8)
55 | (((bus->number - hose->first_busno) & 0xff) << 16)
56 | (hose->global_number << 24);
57 int rval;
58
59 rval = rtas_call(rtas_token("write-pci-config"), 3, 1, NULL,
60 addr, len, val);
61 return rval ? PCIBIOS_DEVICE_NOT_FOUND : PCIBIOS_SUCCESSFUL;
62}
63
64static struct pci_ops rtas_pci_ops = {
65 .read = rtas_read_config,
66 .write = rtas_write_config,
67};
68
69
70static void __init efika_pcisetup(void)
71{
72 const int *bus_range;
73 int len;
74 struct pci_controller *hose;
75 struct device_node *root;
76 struct device_node *pcictrl;
77
78 root = of_find_node_by_path("/");
79 if (root == NULL) {
80 printk(KERN_WARNING EFIKA_PLATFORM_NAME
81 ": Unable to find the root node\n");
82 return;
83 }
84
85 for (pcictrl = NULL;;) {
86 pcictrl = of_get_next_child(root, pcictrl);
87 if ((pcictrl == NULL) || (strcmp(pcictrl->name, "pci") == 0))
88 break;
89 }
90
91 of_node_put(root);
92
93 if (pcictrl == NULL) {
94 printk(KERN_WARNING EFIKA_PLATFORM_NAME
95 ": Unable to find the PCI bridge node\n");
96 return;
97 }
98
99 bus_range = of_get_property(pcictrl, "bus-range", &len);
100 if (bus_range == NULL || len < 2 * sizeof(int)) {
101 printk(KERN_WARNING EFIKA_PLATFORM_NAME
102 ": Can't get bus-range for %pOF\n", pcictrl);
103 goto out_put;
104 }
105
106 if (bus_range[1] == bus_range[0])
107 printk(KERN_INFO EFIKA_PLATFORM_NAME ": PCI bus %d",
108 bus_range[0]);
109 else
110 printk(KERN_INFO EFIKA_PLATFORM_NAME ": PCI buses %d..%d",
111 bus_range[0], bus_range[1]);
112 printk(" controlled by %pOF\n", pcictrl);
113 printk("\n");
114
115 hose = pcibios_alloc_controller(pcictrl);
116 if (!hose) {
117 printk(KERN_WARNING EFIKA_PLATFORM_NAME
118 ": Can't allocate PCI controller structure for %pOF\n",
119 pcictrl);
120 goto out_put;
121 }
122
123 hose->first_busno = bus_range[0];
124 hose->last_busno = bus_range[1];
125 hose->ops = &rtas_pci_ops;
126
127 pci_process_bridge_OF_ranges(hose, pcictrl, 0);
128 return;
129out_put:
130 of_node_put(pcictrl);
131}
132
133#else
134static void __init efika_pcisetup(void)
135{}
136#endif
137
138
139
140
141
142
143
144static void efika_show_cpuinfo(struct seq_file *m)
145{
146 struct device_node *root;
147 const char *revision;
148 const char *codegendescription;
149 const char *codegenvendor;
150
151 root = of_find_node_by_path("/");
152 if (!root)
153 return;
154
155 revision = of_get_property(root, "revision", NULL);
156 codegendescription = of_get_property(root, "CODEGEN,description", NULL);
157 codegenvendor = of_get_property(root, "CODEGEN,vendor", NULL);
158
159 if (codegendescription)
160 seq_printf(m, "machine\t\t: %s\n", codegendescription);
161 else
162 seq_printf(m, "machine\t\t: Efika\n");
163
164 if (revision)
165 seq_printf(m, "revision\t: %s\n", revision);
166
167 if (codegenvendor)
168 seq_printf(m, "vendor\t\t: %s\n", codegenvendor);
169
170 of_node_put(root);
171}
172
173#ifdef CONFIG_PM
174static void efika_suspend_prepare(void __iomem *mbar)
175{
176 u8 pin = 4;
177 u8 level = 1;
178
179 mpc52xx_set_wakeup_gpio(pin, level);
180}
181#endif
182
183static void __init efika_setup_arch(void)
184{
185 rtas_initialize();
186
187
188 mpc52xx_map_common_devices();
189
190 efika_pcisetup();
191
192#ifdef CONFIG_PM
193 mpc52xx_suspend.board_suspend_prepare = efika_suspend_prepare;
194 mpc52xx_pm_init();
195#endif
196
197 if (ppc_md.progress)
198 ppc_md.progress("Linux/PPC " UTS_RELEASE " running on Efika ;-)\n", 0x0);
199}
200
201static int __init efika_probe(void)
202{
203 const char *model = of_get_property(of_root, "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 pm_power_off = rtas_power_off;
215
216 return 1;
217}
218
219define_machine(efika)
220{
221 .name = EFIKA_PLATFORM_NAME,
222 .probe = efika_probe,
223 .setup_arch = efika_setup_arch,
224 .init = mpc52xx_declare_of_platform_devices,
225 .show_cpuinfo = efika_show_cpuinfo,
226 .init_IRQ = mpc52xx_init_irq,
227 .get_irq = mpc52xx_get_irq,
228 .restart = rtas_restart,
229 .halt = rtas_halt,
230 .set_rtc_time = rtas_set_rtc_time,
231 .get_rtc_time = rtas_get_rtc_time,
232 .progress = rtas_progress,
233 .get_boot_time = rtas_get_boot_time,
234 .calibrate_decr = generic_calibrate_decr,
235#ifdef CONFIG_PCI
236 .phys_mem_access_prot = pci_phys_mem_access_prot,
237#endif
238};
239
240
