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-rw-r--r--util/vgabios/device.c482
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diff --git a/util/vgabios/device.c b/util/vgabios/device.c
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+/******************************************************************************
+ * Copyright (c) 2004, 2008 IBM Corporation
+ * Copyright (c) 2008, 2009 Pattrick Hueper <phueper@hueper.net>
+ * All rights reserved.
+ * This program and the accompanying materials
+ * are made available under the terms of the BSD License
+ * which accompanies this distribution, and is available at
+ * http://www.opensource.org/licenses/bsd-license.php
+ *
+ * Contributors:
+ * IBM Corporation - initial implementation
+ *****************************************************************************/
+
+
+#include <stdtypes.h>
+
+#include <arch/byteorder.h>
+#include "device.h"
+#include "compat/rtas.h"
+#include <string.h>
+#include "debug.h"
+
+#include <device/device.h>
+#include <device/pci.h>
+#include <device/pci_ops.h>
+#include <device/resource.h>
+
+/* the device we are working with... */
+biosemu_device_t bios_device;
+//max. 6 BARs and 1 Exp.ROM plus CfgSpace and 3 legacy ranges, plus 2 "special" memory ranges
+translate_address_t translate_address_array[13];
+u8 taa_last_entry;
+
+typedef struct {
+ u8 info;
+ u8 bus;
+ u8 devfn;
+ u8 cfg_space_offset;
+ u64 address;
+ u64 size;
+} __attribute__ ((__packed__)) assigned_address_t;
+
+#if CONFIG_PCI_OPTION_ROM_RUN_YABEL
+/* coreboot version */
+
+static void
+biosemu_dev_get_addr_info(void)
+{
+#if 0
+ int taa_index = 0;
+ struct resource *r;
+ u8 bus = bios_device.dev->bus->secondary;
+ u16 devfn = bios_device.dev->path.pci.devfn;
+
+ bios_device.bus = bus;
+ bios_device.devfn = devfn;
+
+ DEBUG_PRINTF("bus: %x, devfn: %x\n", bus, devfn);
+ for (r = bios_device.dev->resource_list; r; r = r->next) {
+ translate_address_array[taa_index].info = r->flags;
+ translate_address_array[taa_index].bus = bus;
+ translate_address_array[taa_index].devfn = devfn;
+ translate_address_array[taa_index].cfg_space_offset =
+ r->index;
+ translate_address_array[taa_index].address = r->base;
+ translate_address_array[taa_index].size = r->size;
+ /* don't translate addresses... all addresses are 1:1 */
+ translate_address_array[taa_index].address_offset = 0;
+ taa_index++;
+ }
+ /* Expansion ROM */
+ translate_address_array[taa_index].info = IORESOURCE_MEM | IORESOURCE_READONLY;
+ translate_address_array[taa_index].bus = bus;
+ translate_address_array[taa_index].devfn = devfn;
+ translate_address_array[taa_index].cfg_space_offset = 0x30;
+ translate_address_array[taa_index].address = bios_device.img_addr;
+ translate_address_array[taa_index].size = 0; /* TODO: do we need the size? */
+ /* don't translate addresses... all addresses are 1:1 */
+ translate_address_array[taa_index].address_offset = 0;
+ taa_index++;
+ /* legacy ranges if its a VGA card... */
+ if ((bios_device.dev->class & 0xFF0000) == 0x030000) {
+ DEBUG_PRINTF("%s: VGA device found, adding legacy resources... \n", __func__);
+ /* I/O 0x3B0-0x3BB */
+ translate_address_array[taa_index].info = IORESOURCE_FIXED | IORESOURCE_IO;
+ translate_address_array[taa_index].bus = bus;
+ translate_address_array[taa_index].devfn = devfn;
+ translate_address_array[taa_index].cfg_space_offset = 0;
+ translate_address_array[taa_index].address = 0x3b0;
+ translate_address_array[taa_index].size = 0xc;
+ /* don't translate addresses... all addresses are 1:1 */
+ translate_address_array[taa_index].address_offset = 0;
+ taa_index++;
+ /* I/O 0x3C0-0x3DF */
+ translate_address_array[taa_index].info = IORESOURCE_FIXED | IORESOURCE_IO;
+ translate_address_array[taa_index].bus = bus;
+ translate_address_array[taa_index].devfn = devfn;
+ translate_address_array[taa_index].cfg_space_offset = 0;
+ translate_address_array[taa_index].address = 0x3c0;
+ translate_address_array[taa_index].size = 0x20;
+ /* don't translate addresses... all addresses are 1:1 */
+ translate_address_array[taa_index].address_offset = 0;
+ taa_index++;
+ /* Mem 0xA0000-0xBFFFF */
+ translate_address_array[taa_index].info = IORESOURCE_FIXED | IORESOURCE_MEM;
+ translate_address_array[taa_index].bus = bus;
+ translate_address_array[taa_index].devfn = devfn;
+ translate_address_array[taa_index].cfg_space_offset = 0;
+ translate_address_array[taa_index].address = 0xa0000;
+ translate_address_array[taa_index].size = 0x20000;
+ /* don't translate addresses... all addresses are 1:1 */
+ translate_address_array[taa_index].address_offset = 0;
+ taa_index++;
+ }
+ // store last entry index of translate_address_array
+ taa_last_entry = taa_index - 1;
+#if CONFIG_X86EMU_DEBUG
+ //dump translate_address_array
+ printf("translate_address_array: \n");
+ translate_address_t ta;
+ int i;
+ for (i = 0; i <= taa_last_entry; i++) {
+ ta = translate_address_array[i];
+ printf
+ ("%d: info: %08lx bus: %02x devfn: %02x cfg_space_offset: %02x\n\taddr: %016llx\n\toffs: %016llx\n\tsize: %016llx\n",
+ i, ta.info, ta.bus, ta.devfn, ta.cfg_space_offset,
+ ta.address, ta.address_offset, ta.size);
+ }
+#endif
+#endif
+}
+#else
+// use translate_address_dev and get_puid from net-snk's net_support.c
+void translate_address_dev(u64 *, phandle_t);
+u64 get_puid(phandle_t node);
+
+
+// scan all addresses assigned to the device ("assigned-addresses" and "reg")
+// store in translate_address_array for faster translation using dev_translate_address
+void
+biosemu_dev_get_addr_info(void)
+{
+ // get bus/dev/fn from assigned-addresses
+ int32_t len;
+ //max. 6 BARs and 1 Exp.ROM plus CfgSpace and 3 legacy ranges
+ assigned_address_t buf[11];
+ len =
+ of_getprop(bios_device.phandle, "assigned-addresses", buf,
+ sizeof(buf));
+ bios_device.bus = buf[0].bus;
+ bios_device.devfn = buf[0].devfn;
+ DEBUG_PRINTF("bus: %x, devfn: %x\n", bios_device.bus,
+ bios_device.devfn);
+ //store address translations for all assigned-addresses and regs in
+ //translate_address_array for faster translation later on...
+ int i = 0;
+ // index to insert data into translate_address_array
+ int taa_index = 0;
+ u64 address_offset;
+ for (i = 0; i < (len / sizeof(assigned_address_t)); i++, taa_index++) {
+ //copy all info stored in assigned-addresses
+ translate_address_array[taa_index].info = buf[i].info;
+ translate_address_array[taa_index].bus = buf[i].bus;
+ translate_address_array[taa_index].devfn = buf[i].devfn;
+ translate_address_array[taa_index].cfg_space_offset =
+ buf[i].cfg_space_offset;
+ translate_address_array[taa_index].address = buf[i].address;
+ translate_address_array[taa_index].size = buf[i].size;
+ // translate first address and store it as address_offset
+ address_offset = buf[i].address;
+ translate_address_dev(&address_offset, bios_device.phandle);
+ translate_address_array[taa_index].address_offset =
+ address_offset - buf[i].address;
+ }
+ //get "reg" property
+ len = of_getprop(bios_device.phandle, "reg", buf, sizeof(buf));
+ for (i = 0; i < (len / sizeof(assigned_address_t)); i++) {
+ if ((buf[i].size == 0) || (buf[i].cfg_space_offset != 0)) {
+ // we don't care for ranges with size 0 and
+ // BARs and Expansion ROM must be in assigned-addresses... so in reg
+ // we only look for those without config space offset set...
+ // i.e. the legacy ranges
+ continue;
+ }
+ //copy all info stored in assigned-addresses
+ translate_address_array[taa_index].info = buf[i].info;
+ translate_address_array[taa_index].bus = buf[i].bus;
+ translate_address_array[taa_index].devfn = buf[i].devfn;
+ translate_address_array[taa_index].cfg_space_offset =
+ buf[i].cfg_space_offset;
+ translate_address_array[taa_index].address = buf[i].address;
+ translate_address_array[taa_index].size = buf[i].size;
+ // translate first address and store it as address_offset
+ address_offset = buf[i].address;
+ translate_address_dev(&address_offset, bios_device.phandle);
+ translate_address_array[taa_index].address_offset =
+ address_offset - buf[i].address;
+ taa_index++;
+ }
+ // store last entry index of translate_address_array
+ taa_last_entry = taa_index - 1;
+#if CONFIG_X86EMU_DEBUG
+ //dump translate_address_array
+ printf("translate_address_array: \n");
+ translate_address_t ta;
+ for (i = 0; i <= taa_last_entry; i++) {
+ ta = translate_address_array[i];
+ printf
+ ("%d: %02x%02x%02x%02x\n\taddr: %016llx\n\toffs: %016llx\n\tsize: %016llx\n",
+ i, ta.info, ta.bus, ta.devfn, ta.cfg_space_offset,
+ ta.address, ta.address_offset, ta.size);
+ }
+#endif
+}
+#endif
+
+// "special memory" is a hack to make some parts of memory fall through to real memory
+// (ie. no translation). Necessary if option ROMs attempt DMA there, map registers or
+// do similarly crazy things.
+void
+biosemu_add_special_memory(u32 start, u32 size)
+{
+#if 0
+ int taa_index = ++taa_last_entry;
+ translate_address_array[taa_index].info = IORESOURCE_FIXED | IORESOURCE_MEM;
+ translate_address_array[taa_index].bus = 0;
+ translate_address_array[taa_index].devfn = 0;
+ translate_address_array[taa_index].cfg_space_offset = 0;
+ translate_address_array[taa_index].address = start;
+ translate_address_array[taa_index].size = size;
+ /* don't translate addresses... all addresses are 1:1 */
+ translate_address_array[taa_index].address_offset = 0;
+#endif
+ printf("TODO: Add special memory handler for %x[%x]\n", start, size);
+}
+
+#if !CONFIG_PCI_OPTION_ROM_RUN_YABEL
+// to simulate accesses to legacy VGA Memory (0xA0000-0xBFFFF)
+// we look for the first prefetchable memory BAR, if no prefetchable BAR found,
+// we use the first memory BAR
+// dev_translate_addr will translate accesses to the legacy VGA Memory into the found vmem BAR
+static void
+biosemu_dev_find_vmem_addr(void)
+{
+ int i = 0;
+ translate_address_t ta;
+ s8 tai_np = -1, tai_p = -1; // translate_address_array index for non-prefetchable and prefetchable memory
+ //search backwards to find first entry
+ for (i = taa_last_entry; i >= 0; i--) {
+ ta = translate_address_array[i];
+ if ((ta.cfg_space_offset >= 0x10)
+ && (ta.cfg_space_offset <= 0x24)) {
+ //only BARs
+ if ((ta.info & 0x03) >= 0x02) {
+ //32/64bit memory
+ tai_np = i;
+ if ((ta.info & 0x40) != 0) {
+ // prefetchable
+ tai_p = i;
+ }
+ }
+ }
+ }
+ if (tai_p != -1) {
+ ta = translate_address_array[tai_p];
+ bios_device.vmem_addr = ta.address;
+ bios_device.vmem_size = ta.size;
+ DEBUG_PRINTF
+ ("%s: Found prefetchable Virtual Legacy Memory BAR: %llx, size: %llx\n",
+ __func__, bios_device.vmem_addr,
+ bios_device.vmem_size);
+ } else if (tai_np != -1) {
+ ta = translate_address_array[tai_np];
+ bios_device.vmem_addr = ta.address;
+ bios_device.vmem_size = ta.size;
+ DEBUG_PRINTF
+ ("%s: Found non-prefetchable Virtual Legacy Memory BAR: %llx, size: %llx",
+ __func__, bios_device.vmem_addr,
+ bios_device.vmem_size);
+ }
+ // disable vmem
+ //bios_device.vmem_size = 0;
+}
+
+void
+biosemu_dev_get_puid(void)
+{
+ // get puid
+ bios_device.puid = get_puid(bios_device.phandle);
+ DEBUG_PRINTF("puid: 0x%llx\n", bios_device.puid);
+}
+#endif
+
+static void
+biosemu_dev_get_device_vendor_id(void)
+{
+
+ u32 pci_config_0;
+#if CONFIG_PCI_OPTION_ROM_RUN_YABEL
+ pci_config_0 = pci_read_config32(bios_device.dev, 0x0);
+#else
+ pci_config_0 =
+ rtas_pci_config_read(bios_device.puid, 4, bios_device.bus,
+ bios_device.devfn, 0x0);
+#endif
+ bios_device.pci_device_id =
+ (u16) ((pci_config_0 & 0xFFFF0000) >> 16);
+ bios_device.pci_vendor_id = (u16) (pci_config_0 & 0x0000FFFF);
+ DEBUG_PRINTF("PCI Device ID: %04x, PCI Vendor ID: %x\n",
+ bios_device.pci_device_id, bios_device.pci_vendor_id);
+}
+
+/* Check whether the device has a valid Expansion ROM and search the PCI Data
+ * Structure and any Expansion ROM Header (using dev_scan_exp_header()) for
+ * needed information. If the rom_addr parameter is != 0, it is the address of
+ * the Expansion ROM image and will be used, if it is == 0, the Expansion ROM
+ * BAR address will be used.
+ */
+u8
+biosemu_dev_check_exprom(unsigned long rom_base_addr)
+{
+#if 0
+ int i = 0;
+ translate_address_t ta;
+ u16 pci_ds_offset;
+ pci_data_struct_t pci_ds;
+ if (rom_base_addr == 0) {
+ // check for ExpROM Address (Offset 30) in taa
+ for (i = 0; i <= taa_last_entry; i++) {
+ ta = translate_address_array[i];
+ if (ta.cfg_space_offset == 0x30) {
+ //translated address
+ rom_base_addr = ta.address + ta.address_offset;
+ break;
+ }
+ }
+ }
+ /* In the ROM there could be multiple Expansion ROM Images... start
+ * searching them for an x86 image.
+ */
+ do {
+ if (rom_base_addr == 0) {
+ printf("Error: no Expansion ROM address found!\n");
+ return -1;
+ }
+ set_ci();
+ u16 rom_signature = in16le((void *) rom_base_addr);
+ clr_ci();
+ if (rom_signature != 0xaa55) {
+ printf
+ ("Error: invalid Expansion ROM signature: %02x!\n",
+ *((u16 *) rom_base_addr));
+ return -1;
+ }
+ set_ci();
+ // at offset 0x18 is the (16bit little-endian) pointer to the PCI Data Structure
+ pci_ds_offset = in16le((void *) (rom_base_addr + 0x18));
+ //copy the PCI Data Structure
+ memcpy(&pci_ds, (void *) (rom_base_addr + pci_ds_offset),
+ sizeof(pci_ds));
+ clr_ci();
+#if CONFIG_X86EMU_DEBUG
+ DEBUG_PRINTF("PCI Data Structure @%lx:\n",
+ rom_base_addr + pci_ds_offset);
+ dump((void *) &pci_ds, sizeof(pci_ds));
+#endif
+ if (strncmp((const char *) pci_ds.signature, "PCIR", 4) != 0) {
+ printf("Invalid PCI Data Structure found!\n");
+ break;
+ }
+ //little-endian conversion
+ pci_ds.vendor_id = in16le(&pci_ds.vendor_id);
+ pci_ds.device_id = in16le(&pci_ds.device_id);
+ pci_ds.img_length = in16le(&pci_ds.img_length);
+ pci_ds.pci_ds_length = in16le(&pci_ds.pci_ds_length);
+#ifdef DO_THIS_TEST_TWICE
+ if (pci_ds.vendor_id != bios_device.pci_vendor_id) {
+ printf
+ ("Image has invalid Vendor ID: %04x, expected: %04x\n",
+ pci_ds.vendor_id, bios_device.pci_vendor_id);
+ break;
+ }
+ if (pci_ds.device_id != bios_device.pci_device_id) {
+ printf
+ ("Image has invalid Device ID: %04x, expected: %04x\n",
+ pci_ds.device_id, bios_device.pci_device_id);
+ break;
+ }
+#endif
+ DEBUG_PRINTF("Image Length: %d\n", pci_ds.img_length * 512);
+ DEBUG_PRINTF("Image Code Type: %d\n", pci_ds.code_type);
+ if (pci_ds.code_type == 0) {
+ //x86 image
+ //store image address and image length in bios_device struct
+ bios_device.img_addr = rom_base_addr;
+ bios_device.img_size = pci_ds.img_length * 512;
+ // we found the image, exit the loop
+ break;
+ } else {
+ // no x86 image, check next image (if any)
+ rom_base_addr += pci_ds.img_length * 512;
+ }
+ if ((pci_ds.indicator & 0x80) == 0x80) {
+ //last image found, exit the loop
+ DEBUG_PRINTF("Last PCI Expansion ROM Image found.\n");
+ break;
+ }
+ }
+ while (bios_device.img_addr == 0);
+ // in case we did not find a valid x86 Expansion ROM Image
+ if (bios_device.img_addr == 0) {
+ printf("Error: no valid x86 Expansion ROM Image found!\n");
+ return -1;
+ }
+#endif
+ return 0;
+
+}
+
+u8
+biosemu_dev_init(struct device * device)
+{
+ u8 rval = 0;
+ //init bios_device struct
+ DEBUG_PRINTF("%s\n", __func__);
+ memset(&bios_device, 0, sizeof(bios_device));
+
+#if !CONFIG_PCI_OPTION_ROM_RUN_YABEL
+ bios_device.ihandle = of_open(device_name);
+ if (bios_device.ihandle == 0) {
+ DEBUG_PRINTF("%s is no valid device!\n", device_name);
+ return -1;
+ }
+ bios_device.phandle = of_finddevice(device_name);
+#else
+ bios_device.dev = device;
+#endif
+ biosemu_dev_get_addr_info();
+#if !CONFIG_PCI_OPTION_ROM_RUN_YABEL
+ biosemu_dev_find_vmem_addr();
+ biosemu_dev_get_puid();
+#endif
+ biosemu_dev_get_device_vendor_id();
+ return rval;
+}
+
+// translate address function using translate_address_array assembled
+// by dev_get_addr_info... MUCH faster than calling translate_address_dev
+// and accessing client interface for every translation...
+// returns: 0 if addr not found in translate_address_array, 1 if found.
+u8
+biosemu_dev_translate_address(int type, unsigned long * addr)
+{
+ int i = 0;
+ translate_address_t ta;
+#if !CONFIG_PCI_OPTION_ROM_RUN_YABEL
+ /* we don't need this hack for coreboot... we can access legacy areas */
+ //check if it is an access to legacy VGA Mem... if it is, map the address
+ //to the vmem BAR and then translate it...
+ // (translation info provided by Ben Herrenschmidt)
+ // NOTE: the translation seems to only work for NVIDIA cards... but it is needed
+ // to make some NVIDIA cards work at all...
+ if ((bios_device.vmem_size > 0)
+ && ((*addr >= 0xA0000) && (*addr < 0xB8000))) {
+ *addr = (*addr - 0xA0000) * 4 + 2 + bios_device.vmem_addr;
+ }
+ if ((bios_device.vmem_size > 0)
+ && ((*addr >= 0xB8000) && (*addr < 0xC0000))) {
+ u8 shift = *addr & 1;
+ *addr &= 0xfffffffe;
+ *addr = (*addr - 0xB8000) * 4 + shift + bios_device.vmem_addr;
+ }
+#endif
+ for (i = 0; i <= taa_last_entry; i++) {
+ ta = translate_address_array[i];
+ if ((*addr >= ta.address) && (*addr <= (ta.address + ta.size)) && (ta.info & type)) {
+ *addr += ta.address_offset;
+ return 1;
+ }
+ }
+ return 0;
+}
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