| /*============================================================================ |
| Copyright 2005 ADVANCED MICRO DEVICES, INC. All Rights Reserved. |
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| ============================================================================*/ |
| /* Copyright 2007 coresystems GmbH */ |
| |
| // 2005.9 yhlu serengeti support |
| // 2005.9 yhlu modify that to more dynamic for AMD Opteron Based MB |
| // 2007.9 stepan improve code documentation |
| |
| #include <console/console.h> |
| #include <device/pci.h> |
| #include <device/pci_ids.h> |
| #include <string.h> |
| #include <stdint.h> |
| |
| #include <cpu/amd/amdk8_sysconf.h> |
| |
| |
| #if 0 |
| unsigned node_link_to_bus(unsigned node, unsigned link) |
| { |
| device_t dev; |
| unsigned reg; |
| |
| dev = dev_find_slot(0, PCI_DEVFN(0x18, 1)); |
| if (!dev) { |
| return 0; |
| } |
| for(reg = 0xE0; reg < 0xF0; reg += 0x04) { |
| uint32_t config_map; |
| unsigned dst_node; |
| unsigned dst_link; |
| unsigned bus_base; |
| config_map = pci_read_config32(dev, reg); |
| if ((config_map & 3) != 3) { |
| continue; |
| } |
| dst_node = (config_map >> 4) & 7; |
| dst_link = (config_map >> 8) & 3; |
| bus_base = (config_map >> 16) & 0xff; |
| #if 0 |
| printk_debug("node.link=bus: %d.%d=%d 0x%2x->0x%08x\n", |
| dst_node, dst_link, bus_base, |
| reg, config_map); |
| #endif |
| if ((dst_node == node) && (dst_link == link)) |
| { |
| return bus_base; |
| } |
| } |
| return 0; |
| } |
| #endif |
| |
| |
| /** |
| * Why we need the pci1234[] array |
| * |
| * It will keep the sequence of HT devices in the HT link registers even when a |
| * given HT I/O card is not installed. |
| * |
| * The final result for pci1234[] will be |
| * |
| * pci1234[0] will record the south bridge link and bus range |
| * pci1234[i] will record HT chain i. |
| * |
| * For example, on the Tyan S2885 coreboot_ram will put the AMD8151 chain (HT |
| * link 0) into the register 0xE0, and the AMD8131/8111 HT chain into the |
| * register 0xE4. |
| * |
| * So we need to make sure that the south bridge link will always be on |
| * pci1234[0]. |
| * |
| * Imagine a scenario with multiple HT I/O cards, where you don't install HT I/O 1, |
| * but you only install HT I/O 2 and HT I/O 3. The HT I/Os will end up in registers |
| * 0xE4 and 0xE8. |
| * |
| * But we want to leave pci1234[1] to HT I/O 1 (even though it is disabled), |
| * and let HT I/O 2 and HT I/O 3 still use pci1234[2] and pci1234[3]. |
| * |
| * So we keep the sequence. You need to preset the pci1234[1], pci1234[2], |
| * pci1234[3] for this purpose. |
| * |
| * For this example you need to set |
| * |
| * unsigned pci1234[] = { |
| * 0x0000ff0, |
| * 0x0000f10, // HT IO 1 card always on node 1 |
| * 0x0000f20, // HT IO 2 card always on node 2 |
| * 0x0000f30 // HT IO 3 card always on node 3 |
| * }; |
| * |
| * For 2P + htio(n1) + htio(n0_1) + htio(n1_1), 2P + htio(n1) + 2P + htio(n2) + htio(n3): |
| * You need an array pci1234[6]: |
| * |
| * unsigned pci1234[] = { |
| * 0x0000ff0, |
| * 0x0000010, // HT IO 1 card always on node 1 |
| * 0x0000f00, // HT IO 2 card always on node 0 |
| * 0x0000110, // HT IO 3 card always on node 1 |
| * 0x0000f20, // HT IO 4 card always on node 2 |
| * 0x0000f30 // HT IO 5 card always on node 3 |
| * }; |
| * |
| * |
| * For 4p+htio(n1)+htio(n2)+htio(n3),4p+htio(n1)+4p+htio(n6)+htio(n7): |
| * You need an array pci1234[6]: |
| * |
| * unsigned pci1234[] = { |
| * 0x0000ff0, |
| * 0x0000f10, // HT IO 1 card always on node 1 |
| * 0x0000f20, // HT IO 2 card always on node 2 |
| * 0x0000f30, // HT IO 3 card always on node 3 |
| * 0x0000f60, // HT IO 4 card always on node 6 |
| * 0x0000f70 // HT IO 5 card always on node 7 |
| * }; |
| * |
| * |
| * For 2p + htio(n1) + htio(n0_1) + htio(n1_1), 2P + htio(n1) + 2P + |
| * htio(n2) + htio(n3), 2P + htio(n1) + 4P + htio(n4) + htio(n5), |
| * you need an array pci1234[8]: |
| * |
| * unsigned pci1234[] = { |
| * 0x0000ff0, |
| * 0x0000010, // HT IO 1 card always on node 1 |
| * 0x0000f00, // HT IO 2 card always on node 0 |
| * 0x0000110, // HT IO 3 card always on node 1 |
| * 0x0000f20, // HT IO 4 card always on node 2 |
| * 0x0000f30 // HT IO 5 card always on node 3 |
| * 0x0000f40, // HT IO 6 card always on node 4 |
| * 0x0000f50 // HT IO 7 card always on node 5 |
| * }; |
| * |
| * |
| * For 4P + htio(n1) + htio(n2) + htio(n3), 4p + htio(n1) + 2p + htio(n4) + |
| * htio(n5), 4p + htio(n1) + 4p + htio(n6) + htio(n7), |
| * you need an array pci1234[8]: |
| * |
| * unsigned pci1234[] = { |
| * 0x0000ff0, |
| * 0x0000f10, // HT IO 1 card always on node 1 |
| * 0x0000f20, // HT IO 2 card always on node 2 |
| * 0x0000f30, // HT IO 3 card always on node 3 |
| * 0x0000f40, // HT IO 4 card always on node 4 |
| * 0x0000f50 // HT IO 5 card always on node 5 |
| * 0x0000f60, // HT IO 6 card always on node 6 |
| * 0x0000f70 // HT IO 7 card always on node 7 |
| * }; |
| * |
| * |
| * So the maximum posible value of HC_POSSIBLE_NUM is 8. (FIXME Why?) |
| * |
| * 1n: 3 |
| * 2n: 2x2 - 1 |
| * 4n: 1x4 - 2 |
| * 6n: 2 |
| * 8n: 2 |
| * Total: 12 |
| * |
| * Just put all the possible HT Node/link to the list tp pci1234[] in |
| * src/mainboard/<vendor>/<mainboard>get_bus_conf.c |
| * |
| * Also don't forget to increase the ACPI_SSDTX_NUM etc (FIXME what else) if |
| * you have too many SSDTs |
| * |
| * What about co-processor in socket 1 on a 2 way system? Or socket 2 and |
| * socket 3 on a 4 way system? Treat that as an HC, too! |
| * |
| */ |
| |
| void get_sblk_pci1234(void) |
| { |
| |
| device_t dev; |
| int i,j; |
| uint32_t dword; |
| |
| /* read PCI_DEV(0,0x18,0) 0x64 bit [8:9] to find out SbLink m */ |
| dev = dev_find_slot(0, PCI_DEVFN(0x18,0)); |
| dword = pci_read_config32(dev, 0x64); |
| sysconf.sblk = (dword>>8) & 0x3; |
| |
| dword &=0x0300; |
| dword |= 1; |
| sysconf.pci1234[0] = dword; |
| sysconf.hcid[0] = 0; |
| |
| /* About hardcoded numbering for HT_IO support |
| * |
| * Set the node_id and link_id that could have a HT chain in the one |
| * array, (FIXME: which one?) then check if is enabled. Then update |
| * final value |
| */ |
| |
| /* Here we need to set hcdn |
| * |
| * 1. hypertransport.c needs to record hcdn_reg together with 0xe0, |
| * 0xe4, 0xe8, 0xec when are set (FIXME: when WHAT is set?) |
| * |
| * 2. So at the same time we need update hcdn with hcdn_reg here. FIXME: Why? |
| */ |
| |
| dev = dev_find_slot(0, PCI_DEVFN(0x18, 1)); |
| |
| for(j=0;j<4;j++) { |
| uint32_t dwordx; |
| dwordx = pci_read_config32(dev, 0xe0 + j*4); |
| dwordx &=0xffff0ff1; /* keep bus num, node_id, link_num, enable bits */ |
| if((dwordx & 0xff1) == dword) { /* SBLINK */ |
| sysconf.pci1234[0] = dwordx; |
| sysconf.hcdn[0] = sysconf.hcdn_reg[j]; |
| continue; |
| } |
| |
| if((dwordx & 1) == 1) { |
| /* We need to find out the number of HC |
| * for exact match |
| */ |
| for(i=1;i<sysconf.hc_possible_num;i++) { |
| if((dwordx & 0xff0) == (sysconf.pci1234[i] & 0xff0)) { |
| sysconf.pci1234[i] = dwordx; |
| sysconf.hcdn[i] = sysconf.hcdn_reg[j]; |
| break; |
| } |
| } |
| |
| /* For 0xff0 match or same node */ |
| for(i=1;i<sysconf.hc_possible_num;i++) { |
| if((dwordx & 0xff0) == (dwordx & sysconf.pci1234[i] & 0xff0)) { |
| sysconf.pci1234[i] = dwordx; |
| sysconf.hcdn[i] = sysconf.hcdn_reg[j]; |
| break; |
| } |
| } |
| } |
| } |
| |
| for(i=1;i<sysconf.hc_possible_num;i++) { |
| if((sysconf.pci1234[i] & 1) != 1) { |
| sysconf.pci1234[i] = 0; |
| sysconf.hcdn[i] = 0x20202020; |
| } |
| sysconf.hcid[i] = 0; |
| } |
| |
| } |
| |