Stefan Reinauer | e2b53e1 | 2004-06-28 11:59:45 +0000 | [diff] [blame] | 1 | #include <console/console.h> |
| 2 | #include <arch/io.h> |
| 3 | #include <stdint.h> |
Stefan Reinauer | e2b53e1 | 2004-06-28 11:59:45 +0000 | [diff] [blame] | 4 | #include <device/device.h> |
| 5 | #include <device/pci.h> |
Stefan Reinauer | e2b53e1 | 2004-06-28 11:59:45 +0000 | [diff] [blame] | 6 | #include <stdlib.h> |
| 7 | #include <string.h> |
| 8 | #include <bitops.h> |
| 9 | #include "chip.h" |
Myles Watson | 2e67273 | 2009-11-12 16:38:03 +0000 | [diff] [blame] | 10 | #include <delay.h> |
Stefan Reinauer | e2b53e1 | 2004-06-28 11:59:45 +0000 | [diff] [blame] | 11 | |
Stefan Reinauer | e4932dc | 2004-11-02 20:33:12 +0000 | [diff] [blame] | 12 | static void ram_resource(device_t dev, unsigned long index, |
Eric Biederman | 018d8dd | 2004-11-04 11:04:33 +0000 | [diff] [blame] | 13 | unsigned long basek, unsigned long sizek) |
Stefan Reinauer | e4932dc | 2004-11-02 20:33:12 +0000 | [diff] [blame] | 14 | { |
Eric Biederman | 018d8dd | 2004-11-04 11:04:33 +0000 | [diff] [blame] | 15 | struct resource *resource; |
Stefan Reinauer | e4932dc | 2004-11-02 20:33:12 +0000 | [diff] [blame] | 16 | |
Eric Biederman | 018d8dd | 2004-11-04 11:04:33 +0000 | [diff] [blame] | 17 | if (!sizek) { |
| 18 | return; |
| 19 | } |
| 20 | resource = new_resource(dev, index); |
| 21 | resource->base = ((resource_t)basek) << 10; |
| 22 | resource->size = ((resource_t)sizek) << 10; |
| 23 | resource->flags = IORESOURCE_MEM | IORESOURCE_CACHEABLE | \ |
| 24 | IORESOURCE_FIXED | IORESOURCE_STORED | IORESOURCE_ASSIGNED; |
Stefan Reinauer | e4932dc | 2004-11-02 20:33:12 +0000 | [diff] [blame] | 25 | } |
| 26 | |
Eric Biederman | 018d8dd | 2004-11-04 11:04:33 +0000 | [diff] [blame] | 27 | static void tolm_test(void *gp, struct device *dev, struct resource *new) |
| 28 | { |
| 29 | struct resource **best_p = gp; |
| 30 | struct resource *best; |
| 31 | best = *best_p; |
| 32 | if (!best || (best->base > new->base)) { |
| 33 | best = new; |
| 34 | } |
| 35 | *best_p = best; |
| 36 | } |
| 37 | |
| 38 | static uint32_t find_pci_tolm(struct bus *bus) |
| 39 | { |
| 40 | struct resource *min; |
| 41 | uint32_t tolm; |
| 42 | min = 0; |
| 43 | search_bus_resources(bus, IORESOURCE_MEM, IORESOURCE_MEM, tolm_test, &min); |
| 44 | tolm = 0xffffffffUL; |
| 45 | if (min && tolm > min->base) { |
| 46 | tolm = min->base; |
| 47 | } |
| 48 | return tolm; |
| 49 | } |
Stefan Reinauer | e4932dc | 2004-11-02 20:33:12 +0000 | [diff] [blame] | 50 | |
Myles Watson | b8e2027 | 2009-10-15 13:35:47 +0000 | [diff] [blame] | 51 | #if CONFIG_WRITE_HIGH_TABLES==1 |
Myles Watson | 0520d55 | 2009-05-11 22:44:14 +0000 | [diff] [blame] | 52 | #define HIGH_TABLES_SIZE 64 // maximum size of high tables in KB |
| 53 | extern uint64_t high_tables_base, high_tables_size; |
| 54 | #endif |
| 55 | |
Valdimir Serbinenko | 7339f36 | 2010-05-03 16:21:52 +0000 | [diff] [blame^] | 56 | #define CMOS_ADDR_PORT 0x70 |
| 57 | #define CMOS_DATA_PORT 0x71 |
| 58 | #define HIGH_RAM_ADDR 0x35 |
| 59 | #define LOW_RAM_ADDR 0x34 |
| 60 | |
Myles Watson | 29cc9ed | 2009-07-02 18:56:24 +0000 | [diff] [blame] | 61 | static void cpu_pci_domain_set_resources(device_t dev) |
Eric Biederman | 6e53f50 | 2004-10-27 08:53:57 +0000 | [diff] [blame] | 62 | { |
Valdimir Serbinenko | 7339f36 | 2010-05-03 16:21:52 +0000 | [diff] [blame^] | 63 | u32 pci_tolm = find_pci_tolm(&dev->link[0]); |
| 64 | unsigned long tomk = 0, tolmk; |
| 65 | int idx; |
Eric Biederman | 6e53f50 | 2004-10-27 08:53:57 +0000 | [diff] [blame] | 66 | |
Valdimir Serbinenko | 7339f36 | 2010-05-03 16:21:52 +0000 | [diff] [blame^] | 67 | outb (HIGH_RAM_ADDR, CMOS_ADDR_PORT); |
| 68 | tomk = ((unsigned long) inb(CMOS_DATA_PORT)) << 14; |
| 69 | outb (LOW_RAM_ADDR, CMOS_ADDR_PORT); |
| 70 | tomk |= ((unsigned long) inb(CMOS_DATA_PORT)) << 6; |
| 71 | tomk += 16 * 1024; |
Ronald G. Minnich | 9cf642b | 2006-09-13 04:12:35 +0000 | [diff] [blame] | 72 | |
Valdimir Serbinenko | 7339f36 | 2010-05-03 16:21:52 +0000 | [diff] [blame^] | 73 | printk(BIOS_DEBUG, "Detected %lu Kbytes (%lu MiB) RAM.\n", |
| 74 | tomk, tomk / 1024); |
Myles Watson | 032a965 | 2009-05-11 22:24:53 +0000 | [diff] [blame] | 75 | |
Valdimir Serbinenko | 7339f36 | 2010-05-03 16:21:52 +0000 | [diff] [blame^] | 76 | /* Compute the top of Low memory */ |
| 77 | tolmk = pci_tolm >> 10; |
| 78 | if (tolmk >= tomk) { |
| 79 | /* The PCI hole does not overlap the memory. */ |
| 80 | tolmk = tomk; |
| 81 | } |
| 82 | |
| 83 | /* Report the memory regions. */ |
| 84 | idx = 10; |
| 85 | ram_resource(dev, idx++, 0, 640); |
| 86 | ram_resource(dev, idx++, 768, tolmk - 768); |
Myles Watson | 0520d55 | 2009-05-11 22:44:14 +0000 | [diff] [blame] | 87 | |
Myles Watson | b8e2027 | 2009-10-15 13:35:47 +0000 | [diff] [blame] | 88 | #if CONFIG_WRITE_HIGH_TABLES==1 |
Valdimir Serbinenko | 7339f36 | 2010-05-03 16:21:52 +0000 | [diff] [blame^] | 89 | /* Leave some space for ACPI, PIRQ and MP tables */ |
| 90 | high_tables_base = (tomk - HIGH_TABLES_SIZE) * 1024; |
| 91 | high_tables_size = HIGH_TABLES_SIZE * 1024; |
Myles Watson | 0520d55 | 2009-05-11 22:44:14 +0000 | [diff] [blame] | 92 | #endif |
Valdimir Serbinenko | 7339f36 | 2010-05-03 16:21:52 +0000 | [diff] [blame^] | 93 | |
Eric Biederman | 6e53f50 | 2004-10-27 08:53:57 +0000 | [diff] [blame] | 94 | assign_resources(&dev->link[0]); |
| 95 | } |
Stefan Reinauer | e2b53e1 | 2004-06-28 11:59:45 +0000 | [diff] [blame] | 96 | |
Myles Watson | 29cc9ed | 2009-07-02 18:56:24 +0000 | [diff] [blame] | 97 | static void cpu_pci_domain_read_resources(struct device *dev) |
Eric Biederman | 6e53f50 | 2004-10-27 08:53:57 +0000 | [diff] [blame] | 98 | { |
Myles Watson | 29cc9ed | 2009-07-02 18:56:24 +0000 | [diff] [blame] | 99 | struct resource *res; |
| 100 | |
| 101 | pci_domain_read_resources(dev); |
| 102 | |
| 103 | /* Reserve space for the IOAPIC. This should be in the Southbridge, |
| 104 | * but I couldn't tell which device to put it in. */ |
| 105 | res = new_resource(dev, 2); |
| 106 | res->base = 0xfec00000UL; |
| 107 | res->size = 0x100000UL; |
| 108 | res->limit = 0xffffffffUL; |
| 109 | res->flags = IORESOURCE_MEM | IORESOURCE_FIXED | IORESOURCE_STORED | |
| 110 | IORESOURCE_ASSIGNED; |
| 111 | |
| 112 | /* Reserve space for the LAPIC. There's one in every processor, but |
| 113 | * the space only needs to be reserved once, so we do it here. */ |
| 114 | res = new_resource(dev, 3); |
| 115 | res->base = 0xfee00000UL; |
| 116 | res->size = 0x10000UL; |
| 117 | res->limit = 0xffffffffUL; |
| 118 | res->flags = IORESOURCE_MEM | IORESOURCE_FIXED | IORESOURCE_STORED | |
| 119 | IORESOURCE_ASSIGNED; |
Eric Biederman | 6e53f50 | 2004-10-27 08:53:57 +0000 | [diff] [blame] | 120 | } |
| 121 | |
| 122 | static struct device_operations pci_domain_ops = { |
Myles Watson | 29cc9ed | 2009-07-02 18:56:24 +0000 | [diff] [blame] | 123 | .read_resources = cpu_pci_domain_read_resources, |
| 124 | .set_resources = cpu_pci_domain_set_resources, |
Myles Watson | 032a965 | 2009-05-11 22:24:53 +0000 | [diff] [blame] | 125 | .enable_resources = enable_childrens_resources, |
| 126 | .init = 0, |
| 127 | .scan_bus = pci_domain_scan_bus, |
| 128 | }; |
Eric Biederman | 6e53f50 | 2004-10-27 08:53:57 +0000 | [diff] [blame] | 129 | |
| 130 | static void enable_dev(struct device *dev) |
| 131 | { |
Eric Biederman | 018d8dd | 2004-11-04 11:04:33 +0000 | [diff] [blame] | 132 | /* Set the operations if it is a special bus type */ |
| 133 | if (dev->path.type == DEVICE_PATH_PCI_DOMAIN) { |
| 134 | dev->ops = &pci_domain_ops; |
Eric Biederman | a9e632c | 2004-11-18 22:38:08 +0000 | [diff] [blame] | 135 | pci_set_method(dev); |
Eric Biederman | 018d8dd | 2004-11-04 11:04:33 +0000 | [diff] [blame] | 136 | } |
Stefan Reinauer | e2b53e1 | 2004-06-28 11:59:45 +0000 | [diff] [blame] | 137 | } |
| 138 | |
Patrick Georgi | 35784b6 | 2010-04-08 12:47:35 +0000 | [diff] [blame] | 139 | struct chip_operations mainboard_emulation_qemu_x86_ops = { |
Eric Biederman | 018d8dd | 2004-11-04 11:04:33 +0000 | [diff] [blame] | 140 | CHIP_NAME("QEMU Northbridge") |
Eric Biederman | 6e53f50 | 2004-10-27 08:53:57 +0000 | [diff] [blame] | 141 | .enable_dev = enable_dev, |
Stefan Reinauer | e2b53e1 | 2004-06-28 11:59:45 +0000 | [diff] [blame] | 142 | }; |