summaryrefslogtreecommitdiff
path: root/src/northbridge
diff options
context:
space:
mode:
authorMyles Watson <mylesgw@gmail.com>2009-10-23 22:53:26 +0000
committerMyles Watson <mylesgw@gmail.com>2009-10-23 22:53:26 +0000
commit036c15fe71c4ec69e4403e0957f6c84357177d49 (patch)
tree9447dc64aba1ba9fdea2bb622454c80f6ea56314 /src/northbridge
parentc21b5ee58470c16b4f31578fe19d10e66cb914ad (diff)
downloadcoreboot-036c15fe71c4ec69e4403e0957f6c84357177d49.tar.xz
Drop dead K8_SCAN_PCI_BUS code. It's a bad idea to scan the PCI busses before
RAM is initialized, and no one does it. Trivial. Signed-off-by: Myles Watson <mylesgw@gmail.com> Acked-by: Myles Watson <mylesgw@gmail.com> git-svn-id: svn://svn.coreboot.org/coreboot/trunk@4830 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'src/northbridge')
-rw-r--r--src/northbridge/amd/amdk8/incoherent_ht.c132
1 files changed, 0 insertions, 132 deletions
diff --git a/src/northbridge/amd/amdk8/incoherent_ht.c b/src/northbridge/amd/amdk8/incoherent_ht.c
index 62d1a57357..4dc302b49d 100644
--- a/src/northbridge/amd/amdk8/incoherent_ht.c
+++ b/src/northbridge/amd/amdk8/incoherent_ht.c
@@ -15,10 +15,6 @@
#define RAMINIT_SYSINFO 0
#endif
-#ifndef K8_SCAN_PCI_BUS
- #define K8_SCAN_PCI_BUS 0
-#endif
-
#ifndef K8_ALLOCATE_IO_RANGE
#define K8_ALLOCATE_IO_RANGE 0
#endif
@@ -299,122 +295,6 @@ static int ht_optimize_link(
return needs_reset;
}
-#if (CONFIG_USE_DCACHE_RAM == 1) && (K8_SCAN_PCI_BUS == 1)
-
-#if RAMINIT_SYSINFO == 1
-static void ht_setup_chainx(device_t udev, uint8_t upos, uint8_t bus, unsigned offset_unitid, struct sys_info *sysinfo);
-static int scan_pci_bus( unsigned bus , struct sys_info *sysinfo)
-#else
-static int ht_setup_chainx(device_t udev, uint8_t upos, uint8_t bus, unsigned offset_unitid);
-static int scan_pci_bus( unsigned bus)
-#endif
-{
- /*
- here we already can access PCI_DEV(bus, 0, 0) to PCI_DEV(bus, 0x1f, 0x7)
- So We can scan these devices to find out if they are bridge
- If it is pci bridge, We need to set busn in bridge, and go on
- For ht bridge, We need to set the busn in bridge and ht_setup_chainx, and the scan_pci_bus
- */
- unsigned int devfn;
- unsigned new_bus;
- unsigned max_bus;
-
- new_bus = (bus & 0xff); // mask out the reset_needed
-
- if(new_bus<0x40) {
- max_bus = 0x3f;
- } else if (new_bus<0x80) {
- max_bus = 0x7f;
- } else if (new_bus<0xc0) {
- max_bus = 0xbf;
- } else {
- max_bus = 0xff;
- }
-
- new_bus = bus;
-
- for (devfn = 0; devfn <= 0xff; devfn++) {
- uint8_t hdr_type;
- uint16_t class;
- uint32_t buses;
- device_t dev;
- uint16_t cr;
- dev = PCI_DEV((bus & 0xff), ((devfn>>3) & 0x1f), (devfn & 0x7));
- hdr_type = pci_read_config8(dev, PCI_HEADER_TYPE);
- class = pci_read_config16(dev, PCI_CLASS_DEVICE);
-
- switch(hdr_type & 0x7f) { /* header type */
- case PCI_HEADER_TYPE_BRIDGE:
- if (class != PCI_CLASS_BRIDGE_PCI) goto bad;
- /* set the bus range dev */
-
- /* Clear all status bits and turn off memory, I/O and master enables. */
- cr = pci_read_config16(dev, PCI_COMMAND);
- pci_write_config16(dev, PCI_COMMAND, 0x0000);
- pci_write_config16(dev, PCI_STATUS, 0xffff);
-
- buses = pci_read_config32(dev, PCI_PRIMARY_BUS);
-
- buses &= 0xff000000;
- new_bus++;
- buses |= (((unsigned int) (bus & 0xff) << 0) |
- ((unsigned int) (new_bus & 0xff) << 8) |
- ((unsigned int) max_bus << 16));
- pci_write_config32(dev, PCI_PRIMARY_BUS, buses);
-
- /* here we need to figure out if dev is a ht bridge
- if it is ht bridge, we need to call ht_setup_chainx at first
- Not verified --- yhlu
- */
- uint8_t upos;
- upos = ht_lookup_host_capability(dev); // one func one ht sub
- if (upos) { // sub ht chain
- uint8_t busn;
- busn = (new_bus & 0xff);
- /* Make certain the HT bus is not enumerated */
- ht_collapse_previous_enumeration(busn, 0);
- /* scan the ht chain */
- #if RAMINIT_SYSINFO == 1
- ht_setup_chainx(dev,upos,busn, 0, sysinfo); // don't need offset unitid
- #else
- new_bus |= (ht_setup_chainx(dev, upos, busn, 0)<<16); // store reset_needed to upword
- #endif
- }
-
- #if RAMINIT_SYSINFO == 1
- new_bus = scan_pci_bus(new_bus, sysinfo);
- #else
- new_bus = scan_pci_bus(new_bus);
- #endif
- /* set real max bus num in that */
-
- buses = (buses & 0xff00ffff) |
- ((unsigned int) (new_bus & 0xff) << 16);
- pci_write_config32(dev, PCI_PRIMARY_BUS, buses);
-
- pci_write_config16(dev, PCI_COMMAND, cr);
-
- break;
- default:
- bad:
- ;
- }
-
- /* if this is not a multi function device,
- * or the device is not present don't waste
- * time probing another function.
- * Skip to next device.
- */
- if ( ((devfn & 0x07) == 0x00) && ((hdr_type & 0x80) != 0x80))
- {
- devfn += 0x07;
- }
- }
-
- return new_bus;
-}
-#endif
-
#if RAMINIT_SYSINFO == 1
static void ht_setup_chainx(device_t udev, uint8_t upos, uint8_t bus, unsigned offset_unitid, struct sys_info *sysinfo)
#else
@@ -777,9 +657,6 @@ static int ht_setup_chains(uint8_t ht_c_num)
unsigned regpos;
uint32_t dword;
uint8_t busn;
- #if (CONFIG_USE_DCACHE_RAM == 1) && (K8_SCAN_PCI_BUS == 1)
- unsigned bus;
- #endif
unsigned offset_unitid = 0;
reg = pci_read_config32(PCI_DEV(0,0x18,1), 0xe0 + i * 4);
@@ -814,15 +691,6 @@ static int ht_setup_chains(uint8_t ht_c_num)
reset_needed |= ht_setup_chainx(udev,upos,busn, offset_unitid); //all not
#endif
- #if (CONFIG_USE_DCACHE_RAM == 1) && (K8_SCAN_PCI_BUS == 1)
- /* You can use use this in romcc, because there is function call in romcc, recursive will kill you */
- bus = busn; // we need 32 bit
-#if RAMINIT_SYSINFO == 1
- scan_pci_bus(bus, sysinfo);
-#else
- reset_needed |= (scan_pci_bus(bus)>>16); // take out reset_needed that stored in upword
-#endif
- #endif
}
#if RAMINIT_SYSINFO == 0