2 * This file is part of the LinuxBIOS project.
4 * Copyright (C) 2007 Advanced Micro Devices, Inc.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
21 #include <console/console.h>
24 #include <device/device.h>
25 #include <device/pci.h>
26 #include <device/pci_ids.h>
31 #include <cpu/amd/lxdef.h>
32 #include <cpu/x86/msr.h>
33 #include <cpu/x86/cache.h>
34 #include <cpu/amd/vr.h>
36 #include "northbridge.h"
38 /* here is programming for the various MSRs.*/
39 #define IM_QWAIT 0x100000
41 #define DMCF_WRITE_SERIALIZE_REQUEST (2<<12) /* 2 outstanding */ /* in high */
42 #define DMCF_SERIAL_LOAD_MISSES (2) /* enabled */
44 /* these are the 8-bit attributes for controlling RCONF registers */
45 #define CACHE_DISABLE (1<<0)
46 #define WRITE_ALLOCATE (1<<1)
47 #define WRITE_PROTECT (1<<2)
48 #define WRITE_THROUGH (1<<3)
49 #define WRITE_COMBINE (1<<4)
50 #define WRITE_SERIALIZE (1<<5)
52 /* ram has none of this stuff */
53 #define RAM_PROPERTIES (0)
54 #define DEVICE_PROPERTIES (WRITE_SERIALIZE|CACHE_DISABLE)
55 #define ROM_PROPERTIES (WRITE_SERIALIZE|WRITE_PROTECT|CACHE_DISABLE)
56 #define MSR_WS_CD_DEFAULT (0x21212121)
58 /* 1810-1817 give you 8 registers with which to program protection regions */
59 /* the are region configuration range registers, or RRCF */
60 /* in msr terms, the are a straight base, top address assign, since they are 4k aligned. */
61 /* so no left-shift needed for top or base */
62 #define RRCF_LOW(base,properties) (base|(1<<8)|properties)
63 #define RRCF_LOW_CD(base) RRCF_LOW(base, CACHE_DISABLE)
65 /* build initializer for P2D MSR */
66 #define P2D_BM(msr, pdid1, bizarro, pbase, pmask) {msr, {.hi=(pdid1<<29)|(bizarro<<28)|(pbase>>24), .lo=(pbase<<8)|pmask}}
67 #define P2D_BMO(msr, pdid1, bizarro, poffset, pbase, pmask) {msr, {.hi=(pdid1<<29)|(bizarro<<28)|(poffset<<8)|(pbase>>24), .lo=(pbase<<8)|pmask}}
68 #define P2D_R(msr, pdid1, bizarro, pmax, pmin) {msr, {.hi=(pdid1<<29)|(bizarro<<28)|(pmax>>12), .lo=(pmax<<20)|pmin}}
69 #define P2D_RO(msr, pdid1, bizarro, poffset, pmax, pmin) {msr, {.hi=(pdid1<<29)|(bizarro<<28)|(poffset<<8)|(pmax>>12), .lo=(pmax<<20)|pmin}}
70 #define P2D_SC(msr, pdid1, bizarro, wen, ren,pscbase) {msr, {.hi=(pdid1<<29)|(bizarro<<28)|(wen), .lo=(ren<<16)|(pscbase>>18)}}
71 #define IOD_BM(msr, pdid1, bizarro, ibase, imask) {msr, {.hi=(pdid1<<29)|(bizarro<<28)|(ibase>>12), .lo=(ibase<<20)|imask}}
72 #define IOD_SC(msr, pdid1, bizarro, en, wen, ren, ibase) {msr, {.hi=(pdid1<<29)|(bizarro<<28), .lo=(en<<24)|(wen<<21)|(ren<<20)|(ibase<<3)}}
74 #define BRIDGE_IO_MASK (IORESOURCE_IO | IORESOURCE_MEM)
76 extern void graphics_init(void);
77 extern void cpubug(void);
78 extern void chipsetinit(void);
79 extern void print_conf(void);
80 extern uint32_t get_systop(void);
82 void northbridge_init_early(void);
83 void setup_realmode_idt(void);
84 void do_vsmbios(void);
92 .hi = 0,.lo = IM_QWAIT}}, {
94 .hi = DMCF_WRITE_SERIALIZE_REQUEST,.lo =
95 DMCF_SERIAL_LOAD_MISSES}},
96 /* 1808 will be done down below, so we have to do 180a->1817 (well, 1813 really) */
97 /* for 180a, for now, we assume VSM will configure it */
98 /* 180b is left at reset value,a0000-bffff is non-cacheable */
99 /* 180c, c0000-dffff is set to write serialize and non-cachable */
100 /* oops, 180c will be set by cpu bug handling in cpubug.c */
101 //{0x180c, {.hi = MSR_WS_CD_DEFAULT, .lo = MSR_WS_CD_DEFAULT}},
102 /* 180d is left at default, e0000-fffff is non-cached */
103 /* we will assume 180e, the ssm region configuration, is left at default or set by VSM */
104 /* we will not set 0x180f, the DMM,yet */
105 //{0x1810, {.hi=0xee7ff000, .lo=RRCF_LOW(0xee000000, WRITE_COMBINE|CACHE_DISABLE)}},
106 //{0x1811, {.hi = 0xefffb000, .lo = RRCF_LOW_CD(0xefff8000)}},
107 //{0x1812, {.hi = 0xefff7000, .lo = RRCF_LOW_CD(0xefff4000)}},
108 //{0x1813, {.hi = 0xefff3000, .lo = RRCF_LOW_CD(0xefff0000)}},
109 /* now for GLPCI routing */
111 P2D_BM(MSR_GLIU0_BASE1, 0x1, 0x0, 0x0, 0xfff80),
112 P2D_BM(MSR_GLIU0_BASE2, 0x1, 0x0, 0x80000, 0xfffe0),
113 P2D_SC(MSR_GLIU0_SHADOW, 0x1, 0x0, 0x0, 0xff03, 0xC0000),
115 P2D_BM(MSR_GLIU1_BASE1, 0x1, 0x0, 0x0, 0xfff80),
116 P2D_BM(MSR_GLIU1_BASE2, 0x1, 0x0, 0x80000, 0xfffe0),
117 P2D_SC(MSR_GLIU1_SHADOW, 0x1, 0x0, 0x0, 0xff03, 0xC0000), {
121 /* todo: add a resource record. We don't do this here because this may be called when
122 * very little of the platform is actually working.
130 msr = rdmsr(MC_CF07_DATA);
131 printk_debug("sizeram: _MSR MC_CF07_DATA: %08x:%08x\n", msr.hi, msr.lo);
136 if ((dimm & 7) != 7) {
137 sizem = 4 << ((dimm >> 12) & 0x0F);
143 if ((dimm & 7) != 7) {
144 sizem += 4 << ((dimm >> 12) & 0x0F);
147 printk_debug("sizeram: sizem 0x%xMB\n", sizem);
151 static void enable_shadow(device_t dev)
155 static void northbridge_init(device_t dev)
159 printk_spew(">> Entering northbridge.c: %s\n", __FUNCTION__);
165 //msr = rdmsr(MSR_GLIU0_SHADOW);
170 //printk_debug("MSR 0x%08X is now 0x%08X:0x%08X\n", MSR_GLIU0_SHADOW, msr.hi, msr.lo);
171 //printk_debug("MSR 0x%08X is now 0x%08X:0x%08X\n", MSR_GLIU1_SHADOW, msr.hi, msr.lo);
174 void northbridge_set_resources(struct device *dev)
176 struct resource *resource, *last;
180 last = &dev->resource[dev->resources];
182 for (resource = &dev->resource[0]; resource < last; resource++) {
184 // andrei: do not change the base address, it will make the VSA virtual registers unusable
185 //pci_set_resource(dev, resource);
186 // FIXME: static allocation may conflict with dynamic mappings!
189 for (link = 0; link < dev->links; link++) {
191 bus = &dev->link[link];
194 ("my_dev_set_resources: assign_resources %d\n",
196 assign_resources(bus);
200 /* set a default latency timer */
201 pci_write_config8(dev, PCI_LATENCY_TIMER, 0x40);
203 /* set a default secondary latency timer */
204 if ((dev->hdr_type & 0x7f) == PCI_HEADER_TYPE_BRIDGE) {
205 pci_write_config8(dev, PCI_SEC_LATENCY_TIMER, 0x40);
208 /* zero the irq settings */
209 line = pci_read_config8(dev, PCI_INTERRUPT_PIN);
211 pci_write_config8(dev, PCI_INTERRUPT_LINE, 0);
214 /* set the cache line size, so far 64 bytes is good for everyone */
215 pci_write_config8(dev, PCI_CACHE_LINE_SIZE, 64 >> 2);
218 static struct device_operations northbridge_operations = {
219 .read_resources = pci_dev_read_resources,
220 .set_resources = northbridge_set_resources,
221 .enable_resources = pci_dev_enable_resources,
222 .init = northbridge_init,
227 static struct pci_driver northbridge_driver __pci_driver = {
228 .ops = &northbridge_operations,
229 .vendor = PCI_VENDOR_ID_AMD,
230 .device = PCI_DEVICE_ID_AMD_LXBRIDGE,
233 static void pci_domain_read_resources(device_t dev)
235 struct resource *resource;
236 printk_spew(">> Entering northbridge.c: %s\n", __FUNCTION__);
238 /* Initialize the system wide io space constraints */
239 resource = new_resource(dev, IOINDEX_SUBTRACTIVE(0, 0));
240 resource->limit = 0xffffUL;
242 IORESOURCE_IO | IORESOURCE_SUBTRACTIVE | IORESOURCE_ASSIGNED;
244 /* Initialize the system wide memory resources constraints */
245 resource = new_resource(dev, IOINDEX_SUBTRACTIVE(1, 0));
246 resource->limit = 0xffffffffULL;
248 IORESOURCE_MEM | IORESOURCE_SUBTRACTIVE | IORESOURCE_ASSIGNED;
251 static void ram_resource(device_t dev, unsigned long index,
252 unsigned long basek, unsigned long sizek)
254 struct resource *resource;
259 resource = new_resource(dev, index);
260 resource->base = ((resource_t) basek) << 10;
261 resource->size = ((resource_t) sizek) << 10;
262 resource->flags = IORESOURCE_MEM | IORESOURCE_CACHEABLE |
263 IORESOURCE_FIXED | IORESOURCE_STORED | IORESOURCE_ASSIGNED;
266 static void pci_domain_set_resources(device_t dev)
271 printk_spew(">> Entering northbridge.c: %s\n", __FUNCTION__);
273 mc_dev = dev->link[0].children;
275 /* Report the memory regions */
277 ram_resource(dev, idx++, 0, 640);
278 ram_resource(dev, idx++, 1024, (get_systop() - 0x100000) / 1024); // Systop - 1 MB -> KB
281 assign_resources(&dev->link[0]);
284 static void pci_domain_enable(device_t dev)
287 printk_spew(">> Entering northbridge.c: %s\n", __FUNCTION__);
289 // do this here for now -- this chip really breaks our device model
290 northbridge_init_early();
294 setup_realmode_idt();
296 printk_debug("Before VSA:\n");
299 do_vsmbios(); // do the magic stuff here, so prepare your tambourine ;)
301 printk_debug("After VSA:\n");
308 static unsigned int pci_domain_scan_bus(device_t dev, unsigned int max)
310 printk_spew(">> Entering northbridge.c: %s\n", __FUNCTION__);
312 max = pci_scan_bus(&dev->link[0], PCI_DEVFN(0, 0), 0xff, max);
316 static struct device_operations pci_domain_ops = {
317 .read_resources = pci_domain_read_resources,
318 .set_resources = pci_domain_set_resources,
319 .enable_resources = enable_childrens_resources,
320 .scan_bus = pci_domain_scan_bus,
321 .enable = pci_domain_enable,
324 static void cpu_bus_init(device_t dev)
326 printk_spew(">> Entering northbridge.c: %s\n", __FUNCTION__);
328 initialize_cpus(&dev->link[0]);
331 static void cpu_bus_noop(device_t dev)
335 static struct device_operations cpu_bus_ops = {
336 .read_resources = cpu_bus_noop,
337 .set_resources = cpu_bus_noop,
338 .enable_resources = cpu_bus_noop,
339 .init = cpu_bus_init,
343 static void enable_dev(struct device *dev)
345 printk_spew(">> Entering northbridge.c: %s with path %d\n",
346 __FUNCTION__, dev->path.type);
348 /* Set the operations if it is a special bus type */
349 if (dev->path.type == DEVICE_PATH_PCI_DOMAIN)
350 dev->ops = &pci_domain_ops;
351 else if (dev->path.type == DEVICE_PATH_APIC_CLUSTER)
352 dev->ops = &cpu_bus_ops;
355 struct chip_operations northbridge_amd_lx_ops = {
356 CHIP_NAME("AMD LX Northbridge")
357 .enable_dev = enable_dev,