Add support for PCI-Express on PPC440SPe (Yucca board).

6 files changed, 787 insertions, 3 deletions

diff --git a/cpu/ppc4xx/405gp_pci.c b/cpu/ppc4xx/405gp_pci.c
index cf5eccb..0b0686b 100644
--- a/cpu/ppc4xx/405gp_pci.c
+++ b/cpu/ppc4xx/405gp_pci.c
@@ -315,7 +315,6 @@ void pci_405gp_init(struct pci_controller *hose)
 #ifdef CONFIG_PCI_SCAN_SHOW
 		printf("PCI:   Bus Dev VenId DevId Class Int\n");
 #endif
-
 		hose->last_busno = pci_hose_scan(hose);
 	}
 #endif  /* CONFIG_PCI_PNP */
@@ -563,10 +562,12 @@ void pci_440_init (struct pci_controller *hose)
 	}
 }
 
-
 void pci_init_board(void)
 {
 	pci_440_init (&ppc440_hose);
+#if defined(CONFIG_440SPE)
+	pcie_setup_hoses();
+#endif
 }
 
 #endif /* CONFIG_440 & CONFIG_PCI */
diff --git a/cpu/ppc4xx/440spe_pcie.c b/cpu/ppc4xx/440spe_pcie.c
new file mode 100644
index 0000000..cbc93dd
--- /dev/null
+++ b/cpu/ppc4xx/440spe_pcie.c
@@ -0,0 +1,593 @@
+/*
+ * (C) Copyright 2006
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * Copyright (c) 2005 Cisco Systems.  All rights reserved.
+ * Roland Dreier <rolandd@cisco.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * 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.
+ *
+ */
+
+#include <asm/processor.h>
+#include <asm-ppc/io.h>
+#include <ppc4xx.h>
+#include <common.h>
+#include <pci.h>
+
+#include "440spe_pcie.h"
+
+#if defined(CONFIG_440SPE)
+#if defined(CONFIG_PCI)
+
+enum {
+	PTYPE_ENDPOINT		= 0x0,
+	PTYPE_LEGACY_ENDPOINT	= 0x1,
+	PTYPE_ROOT_PORT		= 0x4,
+
+	LNKW_X1			= 0x1,
+	LNKW_X4			= 0x4,
+	LNKW_X8			= 0x8
+};
+
+static int pcie_read_config(struct pci_controller *hose, unsigned int devfn,
+	int offset, int len, u32 *val) {
+
+	*val = 0;
+	/*
+	 * 440SPE implements only one function per port
+	 */
+	if (!((PCI_FUNC(devfn) == 0) && (PCI_DEV(devfn) == 1)))
+		return 0;
+
+	devfn = PCI_BDF(0,0,0);
+	offset += devfn << 4;
+
+	switch (len) {
+	case 1:
+		*val = in_8(hose->cfg_data + offset);
+		break;
+	case 2:
+		*val = in_le16((u16 *)(hose->cfg_data + offset));
+		break;
+	default:
+		*val = in_le32((u32 *)(hose->cfg_data + offset));
+		break;
+	}
+	return 0;
+}
+
+static int pcie_write_config(struct pci_controller *hose, unsigned int devfn,
+	int offset, int len, u32 val) {
+
+	/*
+	 * 440SPE implements only one function per port
+	 */
+	if (!((PCI_FUNC(devfn) == 0) && (PCI_DEV(devfn) == 1)))
+		return 0;
+
+	devfn = PCI_BDF(0,0,0);
+	offset += devfn << 4;
+
+	switch (len) {
+	case 1:
+		out_8(hose->cfg_data + offset, val);
+		break;
+	case 2:
+		out_le16((u16 *)(hose->cfg_data + offset), val);
+		break;
+	default:
+		out_le32((u32 *)(hose->cfg_data + offset), val);
+		break;
+	}
+	return 0;
+}
+
+int pcie_read_config_byte(struct pci_controller *hose,pci_dev_t dev,int offset,u8 *val)
+{
+	u32 v;
+	int rv;
+
+	rv =  pcie_read_config(hose, dev, offset, 1, &v);
+	*val = (u8)v;
+	return rv;
+}
+
+int pcie_read_config_word(struct pci_controller *hose,pci_dev_t dev,int offset,u16 *val)
+{
+	u32 v;
+	int rv;
+
+	rv = pcie_read_config(hose, dev, offset, 2, &v);
+	*val = (u16)v;
+	return rv;
+}
+
+int pcie_read_config_dword(struct pci_controller *hose,pci_dev_t dev,int offset,u32 *val)
+{
+	u32 v;
+	int rv;
+
+	rv = pcie_read_config(hose, dev, offset, 3, &v);
+	*val = (u32)v;
+	return rv;
+}
+
+int pcie_write_config_byte(struct pci_controller *hose,pci_dev_t dev,int offset,u8 val)
+{
+	return pcie_write_config(hose,(u32)dev,offset,1,val);
+}
+
+int pcie_write_config_word(struct pci_controller *hose,pci_dev_t dev,int offset,u16 val)
+{
+	return pcie_write_config(hose,(u32)dev,offset,2,(u32 )val);
+}
+
+int pcie_write_config_dword(struct pci_controller *hose,pci_dev_t dev,int offset,u32 val)
+{
+	return pcie_write_config(hose,(u32)dev,offset,3,(u32 )val);
+}
+
+static void ppc440spe_setup_utl(u32 port) {
+
+	volatile void *utl_base = NULL;
+
+	/*
+	 * Map UTL registers
+	 */
+	switch (port) {
+	case 0:
+		mtdcr(DCRN_PEGPL_REGBAH(PCIE0), 0x0000000d);
+		mtdcr(DCRN_PEGPL_REGBAL(PCIE0), 0x60000400);
+		mtdcr(DCRN_PEGPL_REGMSK(PCIE0), 0xFFFFFC01);
+		mtdcr(DCRN_PEGPL_SPECIAL(PCIE0), 0x68782800);
+		utl_base = (unsigned int *)(CFG_PCIE1_REGBASE);
+		break;
+
+	case 1:
+		mtdcr(DCRN_PEGPL_REGBAH(PCIE1), 0x0000000d);
+		mtdcr(DCRN_PEGPL_REGBAL(PCIE1), 0x60001400);
+		mtdcr(DCRN_PEGPL_REGMSK(PCIE1), 0xFFFFFC01);
+		mtdcr(DCRN_PEGPL_SPECIAL(PCIE1), 0x68782800);
+		utl_base = (unsigned int *)(CFG_PCIE3_REGBASE);
+		break;
+
+	case 2:
+		mtdcr(DCRN_PEGPL_REGBAH(PCIE2), 0x0000000d);
+		mtdcr(DCRN_PEGPL_REGBAL(PCIE2), 0x60002400);
+		mtdcr(DCRN_PEGPL_REGMSK(PCIE2), 0xFFFFFC01);
+		mtdcr(DCRN_PEGPL_SPECIAL(PCIE2), 0x68782800);
+		utl_base = (unsigned int *)(CFG_PCIE5_REGBASE);
+		break;
+	}
+
+	/*
+	 * Set buffer allocations and then assert VRB and TXE.
+	 */
+	out_be32(utl_base + PEUTL_OUTTR,   0x08000000);
+	out_be32(utl_base + PEUTL_INTR,    0x02000000);
+	out_be32(utl_base + PEUTL_OPDBSZ,  0x10000000);
+	out_be32(utl_base + PEUTL_PBBSZ,   0x53000000);
+	out_be32(utl_base + PEUTL_IPHBSZ,  0x08000000);
+	out_be32(utl_base + PEUTL_IPDBSZ,  0x10000000);
+	out_be32(utl_base + PEUTL_RCIRQEN, 0x00f00000);
+	out_be32(utl_base + PEUTL_PCTL,    0x8080007d);
+}
+
+static int check_error(void)
+{
+	u32 valPE0, valPE1, valPE2;
+	int err = 0;
+
+	/* SDR0_PEGPLLLCT1 reset */
+	if (!(valPE0 = SDR_READ(PESDR0_PLLLCT1) & 0x01000000)) {
+		printf("PCIE: SDR0_PEGPLLLCT1 reset error 0x%x\n", valPE0);
+	}
+
+	valPE0 = SDR_READ(PESDR0_RCSSET);
+	valPE1 = SDR_READ(PESDR1_RCSSET);
+	valPE2 = SDR_READ(PESDR2_RCSSET);
+
+	/* SDR0_PExRCSSET rstgu */
+	if (!(valPE0 & 0x01000000) ||
+	    !(valPE1 & 0x01000000) ||
+	    !(valPE2 & 0x01000000)) {
+		printf("PCIE:  SDR0_PExRCSSET rstgu error\n");
+		err = -1;
+	}
+
+	/* SDR0_PExRCSSET rstdl */
+	if (!(valPE0 & 0x00010000) ||
+	    !(valPE1 & 0x00010000) ||
+	    !(valPE2 & 0x00010000)) {
+		printf("PCIE:  SDR0_PExRCSSET rstdl error\n");
+		err = -1;
+	}
+
+	/* SDR0_PExRCSSET rstpyn */
+	if ((valPE0 & 0x00001000) ||
+	    (valPE1 & 0x00001000) ||
+	    (valPE2 & 0x00001000)) {
+		printf("PCIE:  SDR0_PExRCSSET rstpyn error\n");
+		err = -1;
+	}
+
+	/* SDR0_PExRCSSET hldplb */
+	if ((valPE0 & 0x10000000) ||
+	    (valPE1 & 0x10000000) ||
+	    (valPE2 & 0x10000000)) {
+		printf("PCIE:  SDR0_PExRCSSET hldplb error\n");
+		err = -1;
+	}
+
+	/* SDR0_PExRCSSET rdy */
+	if ((valPE0 & 0x00100000) ||
+	    (valPE1 & 0x00100000) ||
+	    (valPE2 & 0x00100000)) {
+		printf("PCIE:  SDR0_PExRCSSET rdy error\n");
+		err = -1;
+	}
+
+	/* SDR0_PExRCSSET shutdown */
+	if ((valPE0 & 0x00000100) ||
+	    (valPE1 & 0x00000100) ||
+	    (valPE2 & 0x00000100)) {
+		printf("PCIE:  SDR0_PExRCSSET shutdown error\n");
+		err = -1;
+	}
+	return err;
+}
+
+/*
+ * Initialize PCI Express core
+ */
+int ppc440spe_init_pcie(void)
+{
+	int time_out = 20;
+
+	/* Set PLL clock receiver to LVPECL */
+	SDR_WRITE(PESDR0_PLLLCT1, SDR_READ(PESDR0_PLLLCT1) | 1 << 28);
+
+	if (check_error())
+		return -1;
+
+	if (!(SDR_READ(PESDR0_PLLLCT2) & 0x10000))
+	{
+		printf("PCIE: PESDR_PLLCT2 resistance calibration failed (0x%08x)\n",
+		       SDR_READ(PESDR0_PLLLCT2));
+		return -1;
+	}
+	/* De-assert reset of PCIe PLL, wait for lock */
+	SDR_WRITE(PESDR0_PLLLCT1, SDR_READ(PESDR0_PLLLCT1) & ~(1 << 24));
+	udelay(3);
+
+	while(time_out) {
+		if (!(SDR_READ(PESDR0_PLLLCT3) & 0x10000000)) {
+			time_out--;
+			udelay(1);
+		} else
+			break;
+	}
+	if (!time_out) {
+		printf("PCIE: VCO output not locked\n");
+		return -1;
+	}
+	return 0;
+}
+
+int ppc440spe_init_pcie_rootport(int port)
+{
+	static int core_init;
+	volatile u32 val = 0;
+	int attempts;
+
+	if (!core_init) {
+		++core_init;
+		if (ppc440spe_init_pcie())
+			return -1;
+	}
+
+	/*
+	 * Initialize various parts of the PCI Express core for our port:
+	 *
+	 * - Set as a root port and enable max width
+	 *   (PXIE0 -> X8, PCIE1 and PCIE2 -> X4).
+	 * - Set up UTL configuration.
+	 * - Increase SERDES drive strength to levels suggested by AMCC.
+	 * - De-assert RSTPYN, RSTDL and RSTGU.
+	 *
+	 * NOTICE for revB chip: PESDRn_UTLSET2 is not set - we leave it with
+	 * default setting 0x11310000. The register has new fields,
+	 * PESDRn_UTLSET2[LKINE] in particular: clearing it leads to PCIE core
+	 * hang.
+	 */
+	switch (port) {
+	case 0:
+		SDR_WRITE(PESDR0_DLPSET,  1 << 24 | PTYPE_ROOT_PORT << 20 | LNKW_X8 << 12);
+
+		SDR_WRITE(PESDR0_UTLSET1, 0x21222222);
+		if (!ppc440spe_revB())
+			SDR_WRITE(PESDR0_UTLSET2, 0x11000000);
+		SDR_WRITE(PESDR0_HSSL0SET1, 0x35000000);
+		SDR_WRITE(PESDR0_HSSL1SET1, 0x35000000);
+		SDR_WRITE(PESDR0_HSSL2SET1, 0x35000000);
+		SDR_WRITE(PESDR0_HSSL3SET1, 0x35000000);
+		SDR_WRITE(PESDR0_HSSL4SET1, 0x35000000);
+		SDR_WRITE(PESDR0_HSSL5SET1, 0x35000000);
+		SDR_WRITE(PESDR0_HSSL6SET1, 0x35000000);
+		SDR_WRITE(PESDR0_HSSL7SET1, 0x35000000);
+		SDR_WRITE(PESDR0_RCSSET,
+			(SDR_READ(PESDR0_RCSSET) & ~(1 << 24 | 1 << 16)) | 1 << 12);
+		break;
+
+	case 1:
+		SDR_WRITE(PESDR1_DLPSET, 1 << 24 | PTYPE_ROOT_PORT << 20 | LNKW_X4 << 12);
+		SDR_WRITE(PESDR1_UTLSET1, 0x21222222);
+		if (!ppc440spe_revB())
+			SDR_WRITE(PESDR1_UTLSET2, 0x11000000);
+		SDR_WRITE(PESDR1_HSSL0SET1, 0x35000000);
+		SDR_WRITE(PESDR1_HSSL1SET1, 0x35000000);
+		SDR_WRITE(PESDR1_HSSL2SET1, 0x35000000);
+		SDR_WRITE(PESDR1_HSSL3SET1, 0x35000000);
+		SDR_WRITE(PESDR1_RCSSET,
+			(SDR_READ(PESDR1_RCSSET) & ~(1 << 24 | 1 << 16)) | 1 << 12);
+		break;
+
+	case 2:
+		SDR_WRITE(PESDR2_DLPSET, 1 << 24 | PTYPE_ROOT_PORT << 20 | LNKW_X4 << 12);
+		SDR_WRITE(PESDR2_UTLSET1, 0x21222222);
+		if (!ppc440spe_revB())
+			SDR_WRITE(PESDR2_UTLSET2, 0x11000000);
+		SDR_WRITE(PESDR2_HSSL0SET1, 0x35000000);
+		SDR_WRITE(PESDR2_HSSL1SET1, 0x35000000);
+		SDR_WRITE(PESDR2_HSSL2SET1, 0x35000000);
+		SDR_WRITE(PESDR2_HSSL3SET1, 0x35000000);
+		SDR_WRITE(PESDR2_RCSSET,
+			(SDR_READ(PESDR2_RCSSET) & ~(1 << 24 | 1 << 16)) | 1 << 12);
+		break;
+	}
+	/*
+	 * Notice: the following delay has critical impact on device
+	 * initialization - if too short (<50ms) the link doesn't get up.
+	 */
+	mdelay(100);
+
+	switch (port) {
+	case 0: val = SDR_READ(PESDR0_RCSSTS); break;
+	case 1: val = SDR_READ(PESDR1_RCSSTS); break;
+	case 2: val = SDR_READ(PESDR2_RCSSTS); break;
+	}
+
+	if (val & (1 << 20)) {
+		printf("PCIE%d: PGRST failed %08x\n", port, val);
+		return -1;
+	}
+
+	/*
+	 * Verify link is up
+	 */
+	val = 0;
+	switch (port)
+	{
+		case 0:
+			val = SDR_READ(PESDR0_LOOP);
+			break;
+		case 1:
+			val = SDR_READ(PESDR1_LOOP);
+			break;
+		case 2:
+			val = SDR_READ(PESDR2_LOOP);
+			break;
+	}
+	if (!(val & 0x00001000)) {
+		printf("PCIE%d: link is not up.\n", port);
+		return -1;
+	}
+
+	/*
+	 * Setup UTL registers - but only on revA!
+	 * We use default settings for revB chip.
+	 */
+	if (!ppc440spe_revB())
+		ppc440spe_setup_utl(port);
+
+	/*
+	 * We map PCI Express configuration access into the 512MB regions
+	 *
+	 * NOTICE: revB is very strict about PLB real addressess and ranges to
+	 * be mapped for config space; it seems to only work with d_nnnn_nnnn
+	 * range (hangs the core upon config transaction attempts when set
+	 * otherwise) while revA uses c_nnnn_nnnn.
+	 *
+	 * For revA:
+	 *     PCIE0: 0xc_4000_0000
+	 *     PCIE1: 0xc_8000_0000
+	 *     PCIE2: 0xc_c000_0000
+	 *
+	 * For revB:
+	 *     PCIE0: 0xd_0000_0000
+	 *     PCIE1: 0xd_2000_0000
+	 *     PCIE2: 0xd_4000_0000
+	 */
+	switch (port) {
+	case 0:
+		if (ppc440spe_revB()) {
+			mtdcr(DCRN_PEGPL_CFGBAH(PCIE0), 0x0000000d);
+			mtdcr(DCRN_PEGPL_CFGBAL(PCIE0), 0x00000000);
+		} else {
+			/* revA */
+			mtdcr(DCRN_PEGPL_CFGBAH(PCIE0), 0x0000000c);
+			mtdcr(DCRN_PEGPL_CFGBAL(PCIE0), 0x40000000);
+		}
+		mtdcr(DCRN_PEGPL_CFGMSK(PCIE0), 0xe0000001); /* 512MB region, valid */
+		break;
+
+	case 1:
+		if (ppc440spe_revB()) {
+			mtdcr(DCRN_PEGPL_CFGBAH(PCIE1), 0x0000000d);
+			mtdcr(DCRN_PEGPL_CFGBAL(PCIE1), 0x20000000);
+		} else {
+			mtdcr(DCRN_PEGPL_CFGBAH(PCIE1), 0x0000000c);
+			mtdcr(DCRN_PEGPL_CFGBAL(PCIE1), 0x80000000);
+		}
+		mtdcr(DCRN_PEGPL_CFGMSK(PCIE1), 0xe0000001); /* 512MB region, valid */
+		break;
+
+	case 2:
+		if (ppc440spe_revB()) {
+			mtdcr(DCRN_PEGPL_CFGBAH(PCIE2), 0x0000000d);
+			mtdcr(DCRN_PEGPL_CFGBAL(PCIE2), 0x40000000);
+		} else {
+			mtdcr(DCRN_PEGPL_CFGBAH(PCIE2), 0x0000000c);
+			mtdcr(DCRN_PEGPL_CFGBAL(PCIE2), 0xc0000000);
+		}
+		mtdcr(DCRN_PEGPL_CFGMSK(PCIE2), 0xe0000001); /* 512MB region, valid */
+		break;
+	}
+
+	/*
+	 * Check for VC0 active and assert RDY.
+	 */
+	attempts = 10;
+	switch (port) {
+	case 0:
+		while(!(SDR_READ(PESDR0_RCSSTS) & (1 << 16))) {
+			if (!(attempts--)) {
+				printf("PCIE0: VC0 not active\n");
+				return -1;
+			}
+			mdelay(1000);
+		}
+		SDR_WRITE(PESDR0_RCSSET, SDR_READ(PESDR0_RCSSET) | 1 << 20);
+		break;
+	case 1:
+		while(!(SDR_READ(PESDR1_RCSSTS) & (1 << 16))) {
+			if (!(attempts--)) {
+				printf("PCIE1: VC0 not active\n");
+				return -1;
+			}
+			mdelay(1000);
+		}
+
+		SDR_WRITE(PESDR1_RCSSET, SDR_READ(PESDR1_RCSSET) | 1 << 20);
+		break;
+	case 2:
+		while(!(SDR_READ(PESDR2_RCSSTS) & (1 << 16))) {
+			if (!(attempts--)) {
+				printf("PCIE2: VC0 not active\n");
+				return -1;
+			}
+			mdelay(1000);
+		}
+
+		SDR_WRITE(PESDR2_RCSSET, SDR_READ(PESDR2_RCSSET) | 1 << 20);
+		break;
+	}
+	mdelay(100);
+
+	return 0;
+}
+
+void ppc440spe_setup_pcie(struct pci_controller *hose, int port)
+{
+	volatile void *mbase = NULL;
+
+	pci_set_ops(hose,
+			pcie_read_config_byte,
+			pcie_read_config_word,
+			pcie_read_config_dword,
+			pcie_write_config_byte,
+			pcie_write_config_word,
+			pcie_write_config_dword);
+
+	switch(port) {
+	case 0:
+		mbase = (u32 *)CFG_PCIE0_XCFGBASE;
+		hose->cfg_data = (u8 *)CFG_PCIE0_CFGBASE;
+		break;
+	case 1:
+		mbase = (u32 *)CFG_PCIE1_XCFGBASE;
+		hose->cfg_data = (u8 *)CFG_PCIE1_CFGBASE;
+		break;
+	case 2:
+		mbase = (u32 *)CFG_PCIE2_XCFGBASE;
+		hose->cfg_data = (u8 *)CFG_PCIE2_CFGBASE;
+		break;
+	}
+
+	/*
+	 * Set bus numbers on our root port
+	 */
+	if (ppc440spe_revB()) {
+		out_8((u8 *)mbase + PCI_PRIMARY_BUS, 0);
+		out_8((u8 *)mbase + PCI_SECONDARY_BUS, 1);
+		out_8((u8 *)mbase + PCI_SUBORDINATE_BUS, 1);
+	} else {
+		out_8((u8 *)mbase + PCI_PRIMARY_BUS, 0);
+		out_8((u8 *)mbase + PCI_SECONDARY_BUS, 0);
+	}
+
+	/*
+	 * Set up outbound translation to hose->mem_space from PLB
+	 * addresses at an offset of 0xd_0000_0000.  We set the low
+	 * bits of the mask to 11 to turn off splitting into 8
+	 * subregions and to enable the outbound translation.
+	 */
+	out_le32(mbase + PECFG_POM0LAH, 0x00000000);
+	out_le32(mbase + PECFG_POM0LAL, (CFG_PCIE_MEMBASE +
+			port * CFG_PCIE_MEMSIZE));
+
+	switch (port) {
+	case 0:
+		mtdcr(DCRN_PEGPL_OMR1BAH(PCIE0),  0x0000000d);
+		mtdcr(DCRN_PEGPL_OMR1BAL(PCIE0),  CFG_PCIE_MEMBASE +
+			port * CFG_PCIE_MEMSIZE);
+		mtdcr(DCRN_PEGPL_OMR1MSKH(PCIE0), 0x7fffffff);
+		mtdcr(DCRN_PEGPL_OMR1MSKL(PCIE0),
+			~(CFG_PCIE_MEMSIZE - 1) | 3);
+		break;
+	case 1:
+		mtdcr(DCRN_PEGPL_OMR1BAH(PCIE1),  0x0000000d);
+		mtdcr(DCRN_PEGPL_OMR1BAL(PCIE1),  (CFG_PCIE_MEMBASE +
+			port * CFG_PCIE_MEMSIZE));
+		mtdcr(DCRN_PEGPL_OMR1MSKH(PCIE1), 0x7fffffff);
+		mtdcr(DCRN_PEGPL_OMR1MSKL(PCIE1),
+			~(CFG_PCIE_MEMSIZE - 1) | 3);
+		break;
+	case 2:
+		mtdcr(DCRN_PEGPL_OMR1BAH(PCIE2),  0x0000000d);
+		mtdcr(DCRN_PEGPL_OMR1BAL(PCIE2),  (CFG_PCIE_MEMBASE +
+			port * CFG_PCIE_MEMSIZE));
+		mtdcr(DCRN_PEGPL_OMR1MSKH(PCIE2), 0x7fffffff);
+		mtdcr(DCRN_PEGPL_OMR1MSKL(PCIE2),
+			~(CFG_PCIE_MEMSIZE - 1) | 3);
+		break;
+	}
+
+	/* Set up 16GB inbound memory window at 0 */
+	out_le32(mbase + PCI_BASE_ADDRESS_0, 0);
+	out_le32(mbase + PCI_BASE_ADDRESS_1, 0);
+	out_le32(mbase + PECFG_BAR0HMPA, 0x7fffffc);
+	out_le32(mbase + PECFG_BAR0LMPA, 0);
+	out_le32(mbase + PECFG_PIM0LAL, 0);
+	out_le32(mbase + PECFG_PIM0LAH, 0);
+	out_le32(mbase + PECFG_PIMEN, 0x1);
+
+	/* Enable I/O, Mem, and Busmaster cycles */
+	out_le16((u16 *)(mbase + PCI_COMMAND),
+		 in_le16((u16 *)(mbase + PCI_COMMAND)) |
+		 PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER);
+}
+#endif /* CONFIG_PCI */
+#endif /* CONFIG_440SPE */
diff --git a/cpu/ppc4xx/440spe_pcie.h b/cpu/ppc4xx/440spe_pcie.h
new file mode 100644
index 0000000..47df762
--- /dev/null
+++ b/cpu/ppc4xx/440spe_pcie.h
@@ -0,0 +1,162 @@
+/*
+ * Copyright (c) 2005 Cisco Systems.  All rights reserved.
+ * Roland Dreier <rolandd@cisco.com>
+ *
+ * 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;  either version 2 of the  License, or (at your
+ * option) any later version.
+ */
+
+#include <ppc4xx.h>
+#ifndef __440SPE_PCIE_H
+#define __440SPE_PCIE_H
+
+#define mdelay(n) ({unsigned long __ms=(n); while (__ms--) udelay(1000);})
+
+#define DCRN_SDR0_CFGADDR	0x00e
+#define DCRN_SDR0_CFGDATA	0x00f
+
+#define DCRN_PCIE0_BASE		0x100
+#define DCRN_PCIE1_BASE		0x120
+#define DCRN_PCIE2_BASE		0x140
+#define PCIE0			DCRN_PCIE0_BASE
+#define PCIE1			DCRN_PCIE1_BASE
+#define PCIE2			DCRN_PCIE2_BASE
+
+#define DCRN_PEGPL_CFGBAH(base)		(base + 0x00)
+#define DCRN_PEGPL_CFGBAL(base)		(base + 0x01)
+#define DCRN_PEGPL_CFGMSK(base)		(base + 0x02)
+#define DCRN_PEGPL_MSGBAH(base)		(base + 0x03)
+#define DCRN_PEGPL_MSGBAL(base)		(base + 0x04)
+#define DCRN_PEGPL_MSGMSK(base)		(base + 0x05)
+#define DCRN_PEGPL_OMR1BAH(base)	(base + 0x06)
+#define DCRN_PEGPL_OMR1BAL(base)	(base + 0x07)
+#define DCRN_PEGPL_OMR1MSKH(base)	(base + 0x08)
+#define DCRN_PEGPL_OMR1MSKL(base)	(base + 0x09)
+#define DCRN_PEGPL_REGBAH(base)		(base + 0x12)
+#define DCRN_PEGPL_REGBAL(base)		(base + 0x13)
+#define DCRN_PEGPL_REGMSK(base)		(base + 0x14)
+#define DCRN_PEGPL_SPECIAL(base)	(base + 0x15)
+
+/*
+ * System DCRs (SDRs)
+ */
+#define PESDR0_PLLLCT1		0x03a0
+#define PESDR0_PLLLCT2		0x03a1
+#define PESDR0_PLLLCT3		0x03a2
+
+#define PESDR0_UTLSET1		0x0300
+#define PESDR0_UTLSET2		0x0301
+#define PESDR0_DLPSET		0x0302
+#define PESDR0_LOOP		0x0303
+#define PESDR0_RCSSET		0x0304
+#define PESDR0_RCSSTS		0x0305
+#define PESDR0_HSSL0SET1	0x0306
+#define PESDR0_HSSL0SET2	0x0307
+#define PESDR0_HSSL0STS		0x0308
+#define PESDR0_HSSL1SET1	0x0309
+#define PESDR0_HSSL1SET2	0x030a
+#define PESDR0_HSSL1STS		0x030b
+#define PESDR0_HSSL2SET1	0x030c
+#define PESDR0_HSSL2SET2	0x030d
+#define PESDR0_HSSL2STS		0x030e
+#define PESDR0_HSSL3SET1	0x030f
+#define PESDR0_HSSL3SET2	0x0310
+#define PESDR0_HSSL3STS		0x0311
+#define PESDR0_HSSL4SET1	0x0312
+#define PESDR0_HSSL4SET2	0x0313
+#define PESDR0_HSSL4STS		0x0314
+#define PESDR0_HSSL5SET1	0x0315
+#define PESDR0_HSSL5SET2	0x0316
+#define PESDR0_HSSL5STS		0x0317
+#define PESDR0_HSSL6SET1	0x0318
+#define PESDR0_HSSL6SET2	0x0319
+#define PESDR0_HSSL6STS		0x031a
+#define PESDR0_HSSL7SET1	0x031b
+#define PESDR0_HSSL7SET2	0x031c
+#define PESDR0_HSSL7STS		0x031d
+#define PESDR0_HSSCTLSET	0x031e
+#define PESDR0_LANE_ABCD	0x031f
+#define PESDR0_LANE_EFGH	0x0320
+
+#define PESDR1_UTLSET1		0x0340
+#define PESDR1_UTLSET2		0x0341
+#define PESDR1_DLPSET		0x0342
+#define PESDR1_LOOP		0x0343
+#define PESDR1_RCSSET		0x0344
+#define PESDR1_RCSSTS		0x0345
+#define PESDR1_HSSL0SET1	0x0346
+#define PESDR1_HSSL0SET2	0x0347
+#define PESDR1_HSSL0STS		0x0348
+#define PESDR1_HSSL1SET1	0x0349
+#define PESDR1_HSSL1SET2	0x034a
+#define PESDR1_HSSL1STS		0x034b
+#define PESDR1_HSSL2SET1	0x034c
+#define PESDR1_HSSL2SET2	0x034d
+#define PESDR1_HSSL2STS		0x034e
+#define PESDR1_HSSL3SET1	0x034f
+#define PESDR1_HSSL3SET2	0x0350
+#define PESDR1_HSSL3STS		0x0351
+#define PESDR1_HSSCTLSET	0x0352
+#define PESDR1_LANE_ABCD	0x0353
+
+#define PESDR2_UTLSET1		0x0370
+#define PESDR2_UTLSET2		0x0371
+#define PESDR2_DLPSET		0x0372
+#define PESDR2_LOOP		0x0373
+#define PESDR2_RCSSET		0x0374
+#define PESDR2_RCSSTS		0x0375
+#define PESDR2_HSSL0SET1	0x0376
+#define PESDR2_HSSL0SET2	0x0377
+#define PESDR2_HSSL0STS		0x0378
+#define PESDR2_HSSL1SET1	0x0379
+#define PESDR2_HSSL1SET2	0x037a
+#define PESDR2_HSSL1STS		0x037b
+#define PESDR2_HSSL2SET1	0x037c
+#define PESDR2_HSSL2SET2	0x037d
+#define PESDR2_HSSL2STS		0x037e
+#define PESDR2_HSSL3SET1	0x037f
+#define PESDR2_HSSL3SET2	0x0380
+#define PESDR2_HSSL3STS		0x0381
+#define PESDR2_HSSCTLSET	0x0382
+#define PESDR2_LANE_ABCD	0x0383
+
+/*
+ * UTL register offsets
+ */
+#define PEUTL_PBBSZ		0x20
+#define PEUTL_OPDBSZ		0x68
+#define PEUTL_IPHBSZ		0x70
+#define PEUTL_IPDBSZ		0x78
+#define PEUTL_OUTTR		0x90
+#define PEUTL_INTR		0x98
+#define PEUTL_PCTL		0xa0
+#define PEUTL_RCIRQEN		0xb8
+
+/*
+ * Config space register offsets
+ */
+#define PECFG_BAR0LMPA		0x210
+#define PECFG_BAR0HMPA		0x214
+#define PECFG_PIMEN		0x33c
+#define PECFG_PIM0LAL		0x340
+#define PECFG_PIM0LAH		0x344
+#define PECFG_POM0LAL		0x380
+#define PECFG_POM0LAH		0x384
+
+#define SDR_READ(offset) ({\
+	mtdcr(DCRN_SDR0_CFGADDR, offset); \
+	mfdcr(DCRN_SDR0_CFGDATA);})
+
+#define SDR_WRITE(offset, data) ({\
+	mtdcr(DCRN_SDR0_CFGADDR, offset); \
+	mtdcr(DCRN_SDR0_CFGDATA,data);})
+
+int ppc440spe_init_pcie(void);
+int ppc440spe_init_pcie_rootport(int port);
+void yucca_setup_pcie_fpga_rootpoint(int port);
+void ppc440spe_setup_pcie(struct pci_controller *hose, int port);
+int yucca_pcie_card_present(int port);
+int pcie_hose_scan(struct pci_controller *hose, int bus);
+#endif /* __440SPE_PCIE_H */
diff --git a/cpu/ppc4xx/Makefile b/cpu/ppc4xx/Makefile
index c563457..7d6990f 100644
--- a/cpu/ppc4xx/Makefile
+++ b/cpu/ppc4xx/Makefile
@@ -31,7 +31,8 @@ COBJS	= 405gp_pci.o 4xx_enet.o \
 	  bedbug_405.o commproc.o \
 	  cpu.o cpu_init.o i2c.o interrupts.o \
 	  miiphy.o sdram.o serial.o \
-	  spd_sdram.o speed.o traps.o usb_ohci.o usbdev.o
+	  spd_sdram.o speed.o traps.o usb_ohci.o usbdev.o \
+	  440spe_pcie.o
 
 OBJS	= $(AOBJS) $(COBJS)
 
diff --git a/cpu/ppc4xx/cpu.c b/cpu/ppc4xx/cpu.c
index 71303bc..bc51fbf 100644
--- a/cpu/ppc4xx/cpu.c
+++ b/cpu/ppc4xx/cpu.c
@@ -315,6 +315,17 @@ int checkcpu (void)
 	return 0;
 }
 
+#if defined (CONFIG_440SPE)
+int ppc440spe_revB() {
+	unsigned int pvr;
+
+	pvr = get_pvr();
+	if (pvr == PVR_440SPe_RB)
+		return 1;
+	else
+		return 0;
+}
+#endif
 
 /* ------------------------------------------------------------------------- */
 
diff --git a/cpu/ppc4xx/start.S b/cpu/ppc4xx/start.S
index 0a6f81d..6d6d75f 100644
--- a/cpu/ppc4xx/start.S
+++ b/cpu/ppc4xx/start.S
@@ -315,7 +315,23 @@ rsttlb:	tlbwe	r0,r1,0x0000	/* Invalidate all entries (V=0)*/
 	/*----------------------------------------------------------------*/
 	/* TLB entry setup -- step thru tlbtab */
 	/*----------------------------------------------------------------*/
+#if defined(CONFIG_440SPE)
+	/*----------------------------------------------------------------*/
+	/* We have different TLB tables for revA and rev B of 440SPe */
+	/*----------------------------------------------------------------*/
+	mfspr	r1, PVR
+	lis	r0,0x5342
+	ori	r0,r0,0x1891
+	cmpw	r7,r1,r0
+	bne	r7,..revA
+	bl	tlbtabB
+	b	..goon
+..revA:
+	bl	tlbtabA
+..goon:
+#else
 	bl	tlbtab		/* Get tlbtab pointer */
+#endif
 	mr	r5,r0
 	li	r1,0x003f	/* 64 TLB entries max */
 	mtctr	r1