Add AMD SR56x0 support.
Signed-off-by: Zheng Bao <zheng.bao@amd.com>
Acked-by: Marc Jones <marcj303@gmail.com>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@6462 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
diff --git a/src/southbridge/amd/sr5650/sr5650.c b/src/southbridge/amd/sr5650/sr5650.c
new file mode 100644
index 0000000..616ca44
--- /dev/null
+++ b/src/southbridge/amd/sr5650/sr5650.c
@@ -0,0 +1,432 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2010 Advanced Micro Devices, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <console/console.h>
+#include <arch/io.h>
+#include <device/device.h>
+#include <device/pci.h>
+#include <device/pci_ids.h>
+#include <device/pci_ops.h>
+#include <cpu/x86/msr.h>
+#include <cpu/amd/mtrr.h>
+#include <delay.h>
+#include "sr5650.h"
+#include "cmn.h"
+
+/*
+ * extern function declaration
+ */
+extern void set_pcie_dereset(void);
+extern void set_pcie_reset(void);
+
+/* extension registers */
+u32 pci_ext_read_config32(device_t nb_dev, device_t dev, u32 reg)
+{
+ /*get BAR3 base address for nbcfg0x1c */
+ u32 addr = pci_read_config32(nb_dev, 0x1c) & ~0xF;
+ printk(BIOS_DEBUG, "addr=%x,bus=%x,devfn=%x\n", addr, dev->bus->secondary,
+ dev->path.pci.devfn);
+ addr |= dev->bus->secondary << 20 | /* bus num */
+ dev->path.pci.devfn << 12 | reg;
+ return *((u32 *) addr);
+}
+
+void pci_ext_write_config32(device_t nb_dev, device_t dev, u32 reg_pos, u32 mask, u32 val)
+{
+ u32 reg_old, reg;
+
+ /*get BAR3 base address for nbcfg0x1c */
+ u32 addr = pci_read_config32(nb_dev, 0x1c) & ~0xF;
+ /*printk(BIOS_DEBUG, "write: addr=%x,bus=%x,devfn=%x\n", addr, dev->bus->secondary,
+ dev->path.pci.devfn);*/
+ addr |= dev->bus->secondary << 20 | /* bus num */
+ dev->path.pci.devfn << 12 | reg_pos;
+
+ reg = reg_old = *((u32 *) addr);
+ reg &= ~mask;
+ reg |= val;
+ if (reg != reg_old) {
+ *((u32 *) addr) = reg;
+ }
+}
+
+u32 nbpcie_p_read_index(device_t dev, u32 index)
+{
+ return nb_read_index((dev), NBPCIE_INDEX, (index));
+}
+
+void nbpcie_p_write_index(device_t dev, u32 index, u32 data)
+{
+ nb_write_index((dev), NBPCIE_INDEX, (index), (data));
+}
+
+u32 nbpcie_ind_read_index(device_t nb_dev, u32 index)
+{
+ return nb_read_index((nb_dev), NBPCIE_INDEX, (index));
+}
+
+void nbpcie_ind_write_index(device_t nb_dev, u32 index, u32 data)
+{
+ nb_write_index((nb_dev), NBPCIE_INDEX, (index), (data));
+}
+
+/***********************************************************
+* To access bar3 we need to program PCI MMIO 7 in K8.
+* in_out:
+* 1: enable/enter k8 temp mmio base
+* 0: disable/restore
+***********************************************************/
+void ProgK8TempMmioBase(u8 in_out, u32 pcie_base_add, u32 mmio_base_add)
+{
+ /* K8 Function1 is address map */
+ device_t k8_f1;
+ device_t np = dev_find_slot(0, PCI_DEVFN(0x19, 1));
+ u16 node;
+
+ for (node = 0; node < CONFIG_MAX_PHYSICAL_CPUS; node++) {
+ k8_f1 = dev_find_slot(0, PCI_DEVFN(0x18 + node, 1));
+ if (!k8_f1) {
+ break;
+ }
+
+ if (in_out) {
+ /* Fill MMIO limit/base pair. */
+ pci_write_config32(k8_f1, 0xbc,
+ (((pcie_base_add + 0x10000000 -
+ 1) >> 8) & 0xffffff00) | 0x8 | (np ? 2 << 4 : 0 << 4));
+ pci_write_config32(k8_f1, 0xb8, (pcie_base_add >> 8) | 0x3);
+ pci_write_config32(k8_f1, 0xb4,
+ ((mmio_base_add + 0x10000000 -
+ 1) >> 8) | (np ? 2 << 4 : 0 << 4));
+ pci_write_config32(k8_f1, 0xb0, (mmio_base_add >> 8) | 0x3);
+ } else {
+ pci_write_config32(k8_f1, 0xb8, 0);
+ pci_write_config32(k8_f1, 0xbc, 0);
+ pci_write_config32(k8_f1, 0xb0, 0);
+ pci_write_config32(k8_f1, 0xb4, 0);
+ }
+ }
+}
+
+void PcieReleasePortTraining(device_t nb_dev, device_t dev, u32 port)
+{
+ switch (port) {
+ case 2: /* GPP1, bit4-5 */
+ case 3:
+ set_nbmisc_enable_bits(nb_dev, PCIE_LINK_CFG,
+ 1 << (port + 2), 0 << (port + 2));
+ break;
+ case 4: /* GPP3a, bit20-24 */
+ case 5:
+ case 6:
+ case 7:
+ set_nbmisc_enable_bits(nb_dev, PCIE_LINK_CFG,
+ 1 << (port + 17), 0 << (port + 17));
+ break;
+ case 9: /* GPP3a, bit25,26 */
+ case 10:
+ set_nbmisc_enable_bits(nb_dev, PCIE_LINK_CFG,
+ 1 << (port + 16), 0 << (port + 16));
+ break;
+ case 11: /* GPP2, bit6-7 */
+ case 12:
+ set_nbmisc_enable_bits(nb_dev, PCIE_LINK_CFG,
+ 1 << (port - 5), 0 << (port - 5));
+ break;
+ case 13: /* GPP3b, bit4 of NBMISCIND:0x2A */
+ set_nbmisc_enable_bits(nb_dev, 0x2A,
+ 1 << 4, 0 << 4);
+ break;
+ }
+}
+
+/********************************************************************************************************
+* Output:
+* 0: no device is present.
+* 1: device is present and is trained.
+********************************************************************************************************/
+u8 PcieTrainPort(device_t nb_dev, device_t dev, u32 port)
+{
+ u16 count = 5000;
+ u32 lc_state, reg, current_link_width, lane_mask;
+ u8 current, res = 0;
+ u32 gpp_sb_sel = 0;
+
+ switch (port) {
+ case 2:
+ case 3:
+ gpp_sb_sel = PCIE_CORE_INDEX_GPP1;
+ break;
+ case 4 ... 7:
+ case 9:
+ case 10:
+ gpp_sb_sel = PCIE_CORE_INDEX_GPP3a;
+ break;
+ case 11:
+ case 12:
+ gpp_sb_sel = PCIE_CORE_INDEX_GPP2;
+ break;
+ case 13:
+ gpp_sb_sel = PCIE_CORE_INDEX_GPP3b;
+ break;
+ }
+
+ while (count--) {
+ udelay(40200);
+ lc_state = nbpcie_p_read_index(dev, 0xa5); /* lc_state */
+ printk(BIOS_DEBUG, "PcieLinkTraining port=%x:lc current state=%x\n",
+ port, lc_state);
+ current = lc_state & 0x3f; /* get LC_CURRENT_STATE, bit0-5 */
+
+ switch (current) {
+ /* 0x00-0x04 means no device is present */
+ case 0x06:
+ /* read back current link width [6:4]. */
+ current_link_width = (nbpcie_p_read_index(dev, 0xA2) >> 4) & 0x7;
+ /* 4 means 7:4 and 15:12
+ * 3 means 7:2 and 15:10
+ * 2 means 7:1 and 15:9
+ * egnoring the reversal case
+ */
+ lane_mask = (0xFF << (current_link_width - 2) * 2) & 0xFF;
+ reg = nbpcie_ind_read_index(nb_dev, 0x65 | gpp_sb_sel);
+ reg |= lane_mask << 8 | lane_mask;
+ /* NOTE: See the comments in rs780_pcie.c
+ * switching_gppsb_configurations
+ * In CIMx 4.5.0 and RPR, 4c is done before 5 & 6.
+ * But in this way, a x4 device in port B (dev 4) of
+ * Configuration B can only be detected as x1, instead
+ * of x4. When the port B is being trained, the
+ * LC_CURRENT_STATE is 6 and the LC_LINK_WIDTH_RD is 1.
+ * We have to set the PCIEIND:0x65 as 0xE0E0 and reset
+ * the slot. Then the card seems to work in x1 mode.
+ */
+ reg = 0xE0E0; /*I think that the lane_mask calc above is wrong, and this can't be hardcoded because the configuration changes.*/
+ nbpcie_ind_write_index(nb_dev, 0x65 | gpp_sb_sel, reg);
+ printk(BIOS_DEBUG, "link_width=%x, lane_mask=%x",
+ current_link_width, lane_mask);
+ set_pcie_reset();
+ mdelay(1);
+ set_pcie_dereset();
+ break;
+ case 0x07: /* device is in compliance state (training sequence is done). Move to train the next device */
+ res = 1;
+ count = 0;
+ break;
+ case 0x10:
+ reg =
+ pci_ext_read_config32(nb_dev, dev,
+ PCIE_VC0_RESOURCE_STATUS);
+ printk(BIOS_DEBUG, "PcieTrainPort reg=0x%x\n", reg);
+ /* check bit1 */
+ if (reg & VC_NEGOTIATION_PENDING) { /* bit1=1 means the link needs to be re-trained. */
+ /* set bit8=1, bit0-2=bit4-6 */
+ u32 tmp;
+ reg =
+ nbpcie_p_read_index(dev,
+ PCIE_LC_LINK_WIDTH);
+ tmp = (reg >> 4) && 0x3; /* get bit4-6 */
+ reg &= 0xfff8; /* clear bit0-2 */
+ reg += tmp; /* merge */
+ reg |= 1 << 8;
+ count++; /* CIM said "keep in loop"? */
+ } else {
+ res = 1;
+ count = 0;
+ }
+ break;
+ default:
+ /* CIMx Unknown Workaround - There is a device that won't train. Try to reset it. */
+ /* if there are no device resets and nothing works, CIMx does a cf9 system reset (yikes!) */
+ set_pcie_reset();
+ mdelay(1);
+ set_pcie_dereset();
+ res = 0;
+ count = 0; /* break loop */
+ break;
+ }
+ }
+ return res;
+}
+
+/*
+* Compliant with CIM_33's ATINB_SetToms.
+* Set Top Of Memory below and above 4G.
+*/
+void sr5650_set_tom(device_t nb_dev)
+{
+ extern u64 uma_memory_base;
+
+ /* set TOM */
+ pci_write_config32(nb_dev, 0x90, uma_memory_base);
+}
+
+u32 get_vid_did(device_t dev)
+{
+ return pci_read_config32(dev, 0);
+}
+
+void sr5650_nb_pci_table(device_t nb_dev)
+{ /* NBPOR_InitPOR function. */
+ u8 temp8;
+ u16 temp16;
+ u32 temp32;
+
+ /* Program NB PCI table. */
+ temp16 = pci_read_config16(nb_dev, 0x04);
+ printk(BIOS_DEBUG, "NB_PCI_REG04 = %x.\n", temp16);
+ temp32 = pci_read_config32(nb_dev, 0x84);
+ printk(BIOS_DEBUG, "NB_PCI_REG84 = %x.\n", temp32);
+ //Reg4Ch[1]=1 (APIC_ENABLE) force cpu request with address 0xFECx_xxxx to south-bridge
+ //Reg4Ch[6]=1 (BMMsgEn) enable BM_Set message generation
+ pci_write_config8(nb_dev, 0x4c, 0x42);
+ temp8 = pci_read_config8(nb_dev, 0x4e);
+ temp8 |= 0x05; /* BAR1_ENABLE */
+ pci_write_config8(nb_dev, 0x4e, temp8);
+
+ temp32 = pci_read_config32(nb_dev, 0x4c);
+ printk(BIOS_DEBUG, "NB_PCI_REG4C = %x.\n", temp32);
+
+ /* disable GFX debug. */
+ temp8 = pci_read_config8(nb_dev, 0x8d);
+ temp8 &= ~(1<<1);
+ pci_write_config8(nb_dev, 0x8d, temp8);
+
+ /* set temporary NB TOM to 0x40000000. */
+ sr5650_set_tom(nb_dev);
+
+ /* Program NB HTIU table. */
+ //set_htiu_enable_bits(nb_dev, 0x05, 1<<10 | 1<<9, 1<<10|1<<9);
+ set_htiu_enable_bits(nb_dev, 0x06, 1, 0x4203a202);
+ //set_htiu_enable_bits(nb_dev, 0x07, 1<<1 | 1<<2, 0x8001);
+ set_htiu_enable_bits(nb_dev, 0x15, 0, 1<<31 | 1<<30 | 1<<27);
+ set_htiu_enable_bits(nb_dev, 0x1c, 0, 0xfffe0000);
+ set_htiu_enable_bits(nb_dev, 0x0c, 0x3f, 1 | 1<<3);
+ set_htiu_enable_bits(nb_dev, 0x19, 0xfffff+(1<<31), 0x186a0+(1<<31));
+ set_htiu_enable_bits(nb_dev, 0x16, 0x3f<<10, 0x7<<10);
+ set_htiu_enable_bits(nb_dev, 0x23, 0, 1<<28);
+}
+
+/***********************************************
+* 0:00.0 NBCFG :
+* 0:00.1 CLK : bit 0 of nb_cfg 0x4c : 0 - disable, default
+* 0:01.0 P2P Internal:
+* 0:02.0 P2P : bit 2 of nbmiscind 0x0c : 0 - enable, default + 32 * 2
+* 0:03.0 P2P : bit 3 of nbmiscind 0x0c : 0 - enable, default + 32 * 2
+* 0:04.0 P2P : bit 4 of nbmiscind 0x0c : 0 - enable, default + 32 * 2
+* 0:05.0 P2P : bit 5 of nbmiscind 0x0c : 0 - enable, default + 32 * 2
+* 0:06.0 P2P : bit 6 of nbmiscind 0x0c : 0 - enable, default + 32 * 2
+* 0:07.0 P2P : bit 7 of nbmiscind 0x0c : 0 - enable, default + 32 * 2
+* 0:08.0 NB2SB : bit 6 of nbmiscind 0x00 : 0 - disable, default + 32 * 1
+* case 0 will be called twice, one is by cpu in hypertransport.c line458,
+* the other is by sr5650.
+***********************************************/
+void sr5650_enable(device_t dev)
+{
+ device_t nb_dev = 0, sb_dev = 0;
+ int dev_ind;
+
+ printk(BIOS_INFO, "sr5650_enable: dev=%p, VID_DID=0x%x\n", dev, get_vid_did(dev));
+ nb_dev = dev_find_slot(0, PCI_DEVFN(0, 0));
+ if (!nb_dev) {
+ die("sr5650_enable: CAN NOT FIND SR5650 DEVICE, HALT!\n");
+ /* NOT REACHED */
+ }
+
+ /* sb_dev (dev 8) is a bridge that links to southbridge. */
+ sb_dev = dev_find_slot(0, PCI_DEVFN(8, 0));
+ if (!sb_dev) {
+ die("sr5650_enable: CAN NOT FIND SB bridge, HALT!\n");
+ /* NOT REACHED */
+ }
+
+ dev_ind = dev->path.pci.devfn >> 3;
+ switch (dev_ind) {
+ case 0: /* bus0, dev0, fun0; */
+ printk(BIOS_INFO, "Bus-0, Dev-0, Fun-0.\n");
+ enable_pcie_bar3(nb_dev); /* PCIEMiscInit */
+
+ config_gpp_core(nb_dev, sb_dev);
+ sr5650_gpp_sb_init(nb_dev, sb_dev, 8);
+
+ sr5650_nb_pci_table(nb_dev);
+ break;
+
+ case 2: /* bus0, dev2,3 GPP1 */
+ case 3:
+ printk(BIOS_INFO, "Bus-0, Dev-2,3, Fun-0. enable=%d\n", dev->enabled);
+ set_nbmisc_enable_bits(nb_dev, 0x0c, 1 << dev_ind,
+ (dev->enabled ? 0 : 1) << dev_ind);
+ if (dev->enabled)
+ sr5650_gpp_sb_init(nb_dev, dev, dev_ind); /* Note, dev 2,3 are generic PCIe ports. */
+ break;
+ case 4: /* bus0, dev4-7, four GPP3a */
+ case 5:
+ case 6:
+ case 7:
+ enable_pcie_bar3(nb_dev); /* PCIEMiscInit */
+ printk(BIOS_INFO, "Bus-0, Dev-4,5,6,7, Fun-0. enable=%d\n",
+ dev->enabled);
+ set_nbmisc_enable_bits(nb_dev, 0x0c, 1 << dev_ind,
+ (dev->enabled ? 0 : 1) << dev_ind);
+ if (dev->enabled)
+ sr5650_gpp_sb_init(nb_dev, dev, dev_ind);
+ break;
+ case 8: /* bus0, dev8, SB */
+ printk(BIOS_INFO, "Bus-0, Dev-8, Fun-0. enable=%d\n", dev->enabled);
+ set_nbmisc_enable_bits(nb_dev, 0x00, 1 << 6,
+ (dev->enabled ? 1 : 0) << 6);
+ if (dev->enabled)
+ sr5650_gpp_sb_init(nb_dev, dev, dev_ind);
+ disable_pcie_bar3(nb_dev);
+ break;
+ case 9: /* bus 0, dev 9,10, GPP3a */
+ case 10:
+ printk(BIOS_INFO, "Bus-0, Dev-9, 10, Fun-0. enable=%d\n",
+ dev->enabled);
+ enable_pcie_bar3(nb_dev); /* PCIEMiscInit */
+ set_nbmisc_enable_bits(nb_dev, 0x0c, 1 << (7 + dev_ind),
+ (dev->enabled ? 0 : 1) << (7 + dev_ind));
+ if (dev->enabled)
+ sr5650_gpp_sb_init(nb_dev, dev, dev_ind);
+ /* Dont call disable_pcie_bar3(nb_dev) here, otherwise the screen will crash. */
+ break;
+ case 11:
+ case 12: /* bus 0, dev 11,12, GPP2 */
+ printk(BIOS_INFO, "Bus-0, Dev-11,12, Fun-0. enable=%d\n", dev->enabled);
+ set_nbmisc_enable_bits(nb_dev, 0x0c, 1 << (7 + dev_ind),
+ (dev->enabled ? 0 : 1) << (7 + dev_ind));
+ if (dev->enabled)
+ sr5650_gpp_sb_init(nb_dev, dev, dev_ind);
+ break;
+ case 13: /* bus 0, dev 12, GPP3b */
+ set_nbmisc_enable_bits(nb_dev, 0x0c, 1 << (7 + dev_ind),
+ (dev->enabled ? 0 : 1) << (7 + dev_ind));
+ if (dev->enabled)
+ sr5650_gpp_sb_init(nb_dev, dev, dev_ind);
+ break;
+ default:
+ printk(BIOS_DEBUG, "unknown dev: %s\n", dev_path(dev));
+ }
+}
+
+struct chip_operations southbridge_amd_sr5650_ops = {
+ CHIP_NAME("ATI SR5650")
+ .enable_dev = sr5650_enable,
+};