1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
|
/*
* This file needs a major cleanup. Too much #if 0 code
*/
#include <console/console.h>
#include <arch/io.h>
#include <stdint.h>
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_ids.h>
#include <device/hypertransport.h>
#include <stdlib.h>
#include <string.h>
#include <bitops.h>
#include <delay.h>
#include "chip.h"
/*
* set up basic things ...
* PAR should NOT go here, as it might change with the mainboard.
*/
static void cpu_init(device_t dev)
{
unsigned long *l = (unsigned long *) 0xfffef088;
int i;
for(i = 0; i < 16; i++, l++)
printk(BIOS_ERR, "Par%d: 0x%lx\n", i, *l);
printk(BIOS_SPEW, "SC520 random fixup ...\n");
}
/* Ollie says: make a northbridge/amd/sc520. Ron sez:
* there is no real northbridge, keep it here in cpu.
* Ron wins, he's writing the code.
*/
static void sc520_enable_resources(struct device *dev) {
unsigned char command;
printk(BIOS_SPEW, "%s\n", __func__);
command = pci_read_config8(dev, PCI_COMMAND);
printk(BIOS_SPEW, "========>%s, command 0x%x\n", __func__, command);
command |= PCI_COMMAND_MEMORY | PCI_COMMAND_PARITY | PCI_COMMAND_SERR;
printk(BIOS_SPEW, "========>%s, command 0x%x\n", __func__, command);
pci_write_config8(dev, PCI_COMMAND, command);
command = pci_read_config8(dev, PCI_COMMAND);
printk(BIOS_SPEW, "========>%s, command 0x%x\n", __func__, command);
/*
*/
}
static void sc520_read_resources(device_t dev)
{
struct resource* res;
pci_dev_read_resources(dev);
res = new_resource(dev, 1);
res->base = 0x0UL;
res->size = 0x400UL;
res->limit = 0xffffUL;
res->flags = IORESOURCE_IO | IORESOURCE_ASSIGNED | IORESOURCE_FIXED;
res = new_resource(dev, 3); /* IOAPIC */
res->base = 0xfec00000;
res->size = 0x00001000;
res->flags = IORESOURCE_MEM | IORESOURCE_ASSIGNED | IORESOURCE_FIXED;
}
static struct device_operations cpu_operations = {
.read_resources = sc520_read_resources,
.set_resources = pci_dev_set_resources,
.enable_resources = sc520_enable_resources,
.init = cpu_init,
.enable = 0,
.ops_pci = 0,
};
static const struct pci_driver cpu_driver __pci_driver = {
.ops = &cpu_operations,
.vendor = PCI_VENDOR_ID_AMD,
.device = 0x3000
};
static void ram_resource(device_t dev, unsigned long index,
unsigned long basek, unsigned long sizek)
{
struct resource *resource;
printk(BIOS_SPEW, "%s sizek 0x%lx\n", __func__, sizek);
if (!sizek) {
return;
}
resource = new_resource(dev, index);
resource->base = ((resource_t)basek) << 10;
resource->size = ((resource_t)sizek) << 10;
resource->flags = IORESOURCE_MEM | IORESOURCE_CACHEABLE | \
IORESOURCE_FIXED | IORESOURCE_STORED | IORESOURCE_ASSIGNED;
}
static void tolm_test(void *gp, struct device *dev, struct resource *new)
{
struct resource **best_p = gp;
struct resource *best;
best = *best_p;
if (!best || (best->base > new->base)) {
best = new;
}
*best_p = best;
}
static uint32_t find_pci_tolm(struct bus *bus)
{
struct resource *min;
uint32_t tolm;
printk(BIOS_SPEW, "%s\n", __func__);
min = 0;
search_bus_resources(bus, IORESOURCE_MEM, IORESOURCE_MEM, tolm_test, &min);
tolm = 0xffffffffUL;
if (min && tolm > min->base) {
tolm = min->base;
}
printk(BIOS_SPEW, "%s returns 0x%x\n", __func__, tolm);
return tolm;
}
static void pci_domain_set_resources(device_t dev)
{
device_t mc_dev;
uint32_t pci_tolm;
printk(BIOS_SPEW, "%s\n", __func__);
pci_tolm = find_pci_tolm(dev->link_list);
mc_dev = dev->link_list->children;
if (mc_dev) {
unsigned long tomk, tolmk;
// unsigned char rambits;
// int i;
int idx;
#if 0
for(rambits = 0, i = 0; i < ARRAY_SIZE(ramregs); i++) {
unsigned char reg;
reg = pci_read_config8(mc_dev, ramregs[i]);
/* these are ENDING addresses, not sizes.
* if there is memory in this slot, then reg will be > rambits.
* So we just take the max, that gives us total.
* We take the highest one to cover for once and future coreboot
* bugs. We warn about bugs.
*/
if (reg > rambits)
rambits = reg;
if (reg < rambits)
printk(BIOS_ERR, "ERROR! register 0x%x is not set!\n",
ramregs[i]);
}
printk(BIOS_DEBUG, "I would set ram size to 0x%x Kbytes\n", (rambits)*8*1024);
tomk = rambits*8*1024;
#endif
tomk = 32 * 1024;
/* Compute the top of Low memory */
tolmk = pci_tolm >> 10;
if (tolmk >= tomk) {
/* The PCI hole does does not overlap the memory.
*/
tolmk = tomk;
}
/* Report the memory regions */
idx = 10;
ram_resource(dev, idx++, 0, tolmk);
}
assign_resources(dev->link_list);
}
#if 0
void sc520_enable_resources(device_t dev) {
printk(BIOS_SPEW, "%s\n", __func__);
printk(BIOS_SPEW, "THIS IS FOR THE SC520 =============================\n");
/*
command = pci_read_config8(dev, PCI_COMMAND);
printk(BIOS_SPEW, "%s, command 0x%x\n", __func__, command);
command |= PCI_COMMAND_MEMORY;
printk(BIOS_SPEW, "%s, command 0x%x\n", __func__, command);
pci_write_config8(dev, PCI_COMMAND, command);
command = pci_read_config8(dev, PCI_COMMAND);
printk(BIOS_SPEW, "%s, command 0x%x\n", __func__, command);
*/
enable_childrens_resources(dev);
printk(BIOS_SPEW, "%s\n", __func__);
}
#endif
static struct device_operations pci_domain_ops = {
.read_resources = pci_domain_read_resources,
.set_resources = pci_domain_set_resources,
/*
* If enable_resources is set to the generic enable_resources
* function the whole thing will hang in an endless loop on
* the ts5300. If this is really needed on another platform,
* something is conceptually wrong.
*/
.enable_resources = 0, //enable_resources,
.init = 0,
.scan_bus = pci_domain_scan_bus,
};
#if 0
static void cpu_bus_init(device_t dev)
{
printk(BIOS_SPEW, "cpu_bus_init\n");
}
static void cpu_bus_noop(device_t dev)
{
}
static struct device_operations cpu_bus_ops = {
.read_resources = cpu_bus_noop,
.set_resources = cpu_bus_noop,
.enable_resources = cpu_bus_noop,
.init = cpu_bus_init,
.scan_bus = 0,
};
#endif
static void enable_dev(struct device *dev)
{
printk(BIOS_SPEW, "%s\n", __func__);
/* Set the operations if it is a special bus type */
if (dev->path.type == DEVICE_PATH_PCI_DOMAIN) {
dev->ops = &pci_domain_ops;
pci_set_method(dev);
}
#if 0
/* This is never hit as none of the sc520 boards have
* an APIC cluster defined
*/
else if (dev->path.type == DEVICE_PATH_APIC_CLUSTER) {
dev->ops = &cpu_bus_ops;
}
#endif
}
struct chip_operations cpu_amd_sc520_ops = {
CHIP_NAME("AMD Elan SC520 CPU")
.enable_dev = enable_dev,
};
|
