Merge with http://opensource.freescale.com/pub/scm/u-boot-83xx.git

1 files changed, 357 insertions, 0 deletions

diff --git a/board/mpc8349itx/pci.c b/board/mpc8349itx/pci.c
new file mode 100644
index 0000000..e81ad27
--- /dev/null
+++ b/board/mpc8349itx/pci.c
@@ -0,0 +1,357 @@
+/*
+ * Copyright (C) Freescale Semiconductor, Inc. 2006. All rights reserved.
+ *
+ * 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.
+ *
+ * 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., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+
+#ifdef CONFIG_PCI
+
+#include <asm/mmu.h>
+#include <asm/global_data.h>
+#include <pci.h>
+#include <asm/mpc8349_pci.h>
+#include <i2c.h>
+#if defined(CONFIG_OF_FLAT_TREE)
+#include <ft_build.h>
+#endif
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/* System RAM mapped to PCI space */
+#define CONFIG_PCI_SYS_MEM_BUS	CFG_SDRAM_BASE
+#define CONFIG_PCI_SYS_MEM_PHYS	CFG_SDRAM_BASE
+
+#ifndef CONFIG_PCI_PNP
+static struct pci_config_table pci_mpc8349itx_config_table[] = {
+	{
+	 PCI_ANY_ID,
+	 PCI_ANY_ID,
+	 PCI_ANY_ID,
+	 PCI_ANY_ID,
+	 PCI_IDSEL_NUMBER,
+	 PCI_ANY_ID,
+	 pci_cfgfunc_config_device,
+	 {
+	  PCI_ENET0_IOADDR,
+	  PCI_ENET0_MEMADDR,
+	  PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER}
+	 },
+	{}
+};
+#endif
+
+static struct pci_controller pci_hose[] = {
+	{
+#ifndef CONFIG_PCI_PNP
+	      config_table:pci_mpc8349itx_config_table,
+#endif
+	 },
+	{
+#ifndef CONFIG_PCI_PNP
+	      config_table:pci_mpc8349itx_config_table,
+#endif
+	 }
+};
+
+/**************************************************************************
+ * pci_init_board()
+ *
+ * NOTICE: PCI2 is not currently supported
+ *
+ */
+void pci_init_board(void)
+{
+	volatile immap_t *immr;
+	volatile clk83xx_t *clk;
+	volatile law83xx_t *pci_law;
+	volatile pot83xx_t *pci_pot;
+	volatile pcictrl83xx_t *pci_ctrl;
+	volatile pciconf83xx_t *pci_conf;
+	u8 reg8;
+	u16 reg16;
+	u32 reg32;
+	u32 dev;
+	struct pci_controller *hose;
+
+	immr = (immap_t *) CFG_IMMR;
+	clk = (clk83xx_t *) & immr->clk;
+	pci_law = immr->sysconf.pcilaw;
+	pci_pot = immr->ios.pot;
+	pci_ctrl = immr->pci_ctrl;
+	pci_conf = immr->pci_conf;
+
+	hose = &pci_hose[0];
+
+	/*
+	 * Configure PCI controller and PCI_CLK_OUTPUT both in 66M mode
+	 */
+
+	reg32 = clk->occr;
+	udelay(2000);
+
+#ifdef CONFIG_HARD_I2C
+	i2c_set_bus_num(1);
+	/* Read the PCI_M66EN jumper setting */
+	if ((i2c_read(CFG_I2C_8574_ADDR2, 0, 0, &reg8, sizeof(reg8)) == 0) ||
+	    (i2c_read(CFG_I2C_8574A_ADDR2, 0, 0, &reg8, sizeof(reg8)) == 0)) {
+		if (reg8 & I2C_8574_PCI66)
+			clk->occr = 0xff000000;	/* 66 MHz PCI */
+		else
+			clk->occr = 0xff600001;	/* 33 MHz PCI */
+	} else {
+		clk->occr = 0xff600001;	/* 33 MHz PCI */
+	}
+#else
+	clk->occr = 0xff000000;	/* 66 MHz PCI */
+#endif
+
+	udelay(2000);
+
+	/*
+	 * Release PCI RST Output signal
+	 */
+	pci_ctrl[0].gcr = 0;
+	udelay(2000);
+	pci_ctrl[0].gcr = 1;
+
+#ifdef CONFIG_MPC83XX_PCI2
+	pci_ctrl[1].gcr = 0;
+	udelay(2000);
+	pci_ctrl[1].gcr = 1;
+#endif
+
+	/* We need to wait at least a 1sec based on PCI specs */
+	{
+		int i;
+
+		for (i = 0; i < 1000; i++)
+			udelay(1000);
+	}
+
+	/*
+	 * Configure PCI Local Access Windows
+	 */
+	pci_law[0].bar = CFG_PCI1_MEM_PHYS & LAWBAR_BAR;
+	pci_law[0].ar = LAWAR_EN | LAWAR_SIZE_1G;
+
+	pci_law[1].bar = CFG_PCI1_IO_PHYS & LAWBAR_BAR;
+	pci_law[1].ar = LAWAR_EN | LAWAR_SIZE_32M;
+
+	/*
+	 * Configure PCI Outbound Translation Windows
+	 */
+
+	/* PCI1 mem space - prefetch */
+	pci_pot[0].potar = (CFG_PCI1_MEM_BASE >> 12) & POTAR_TA_MASK;
+	pci_pot[0].pobar = (CFG_PCI1_MEM_PHYS >> 12) & POBAR_BA_MASK;
+	pci_pot[0].pocmr = POCMR_EN | POCMR_PREFETCH_EN | POCMR_CM_256M;
+
+	/* PCI1 IO space */
+	pci_pot[1].potar = (CFG_PCI1_IO_BASE >> 12) & POTAR_TA_MASK;
+	pci_pot[1].pobar = (CFG_PCI1_IO_PHYS >> 12) & POBAR_BA_MASK;
+	pci_pot[1].pocmr = POCMR_EN | POCMR_IO | POCMR_CM_16M;
+
+	/* PCI1 mmio - non-prefetch mem space */
+	pci_pot[2].potar = (CFG_PCI1_MMIO_BASE >> 12) & POTAR_TA_MASK;
+	pci_pot[2].pobar = (CFG_PCI1_MMIO_PHYS >> 12) & POBAR_BA_MASK;
+	pci_pot[2].pocmr = POCMR_EN | POCMR_CM_256M;
+
+	/*
+	 * Configure PCI Inbound Translation Windows
+	 */
+
+	/* we need RAM mapped to PCI space for the devices to
+	 * access main memory */
+	pci_ctrl[0].pitar1 = 0x0;
+	pci_ctrl[0].pibar1 = 0x0;
+	pci_ctrl[0].piebar1 = 0x0;
+	pci_ctrl[0].piwar1 = PIWAR_EN | PIWAR_PF | PIWAR_RTT_SNOOP |
+	    PIWAR_WTT_SNOOP | (__ilog2(gd->ram_size) - 1);
+
+	hose->first_busno = 0;
+	hose->last_busno = 0xff;
+
+	/* PCI memory prefetch space */
+	pci_set_region(hose->regions + 0,
+		       CFG_PCI1_MEM_BASE,
+		       CFG_PCI1_MEM_PHYS,
+		       CFG_PCI1_MEM_SIZE, PCI_REGION_MEM | PCI_REGION_PREFETCH);
+
+	/* PCI memory space */
+	pci_set_region(hose->regions + 1,
+		       CFG_PCI1_MMIO_BASE,
+		       CFG_PCI1_MMIO_PHYS, CFG_PCI1_MMIO_SIZE, PCI_REGION_MEM);
+
+	/* PCI IO space */
+	pci_set_region(hose->regions + 2,
+		       CFG_PCI1_IO_BASE,
+		       CFG_PCI1_IO_PHYS, CFG_PCI1_IO_SIZE, PCI_REGION_IO);
+
+	/* System memory space */
+	pci_set_region(hose->regions + 3,
+		       CONFIG_PCI_SYS_MEM_BUS,
+		       CONFIG_PCI_SYS_MEM_PHYS,
+		       gd->ram_size, PCI_REGION_MEM | PCI_REGION_MEMORY);
+
+	hose->region_count = 4;
+
+	pci_setup_indirect(hose,
+			   (CFG_IMMR + 0x8300), (CFG_IMMR + 0x8304));
+
+	pci_register_hose(hose);
+
+	/*
+	 * Write to Command register
+	 */
+	reg16 = 0xff;
+	dev = PCI_BDF(hose->first_busno, 0, 0);
+	pci_hose_read_config_word(hose, dev, PCI_COMMAND, &reg16);
+	reg16 |= PCI_COMMAND_SERR | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY;
+	pci_hose_write_config_word(hose, dev, PCI_COMMAND, reg16);
+
+	/*
+	 * Clear non-reserved bits in status register.
+	 */
+	pci_hose_write_config_word(hose, dev, PCI_STATUS, 0xffff);
+	pci_hose_write_config_byte(hose, dev, PCI_LATENCY_TIMER, 0x80);
+	pci_hose_write_config_byte(hose, dev, PCI_CACHE_LINE_SIZE, 0x08);
+
+#ifdef CONFIG_PCI_SCAN_SHOW
+	printf("PCI:   Bus Dev VenId DevId Class Int\n");
+#endif
+	/*
+	 * Hose scan.
+	 */
+	hose->last_busno = pci_hose_scan(hose);
+
+#ifdef CONFIG_MPC83XX_PCI2
+	hose = &pci_hose[1];
+
+	/*
+	 * Configure PCI Outbound Translation Windows
+	 */
+
+	/* PCI2 mem space - prefetch */
+	pci_pot[3].potar = (CFG_PCI2_MEM_BASE >> 12) & POTAR_TA_MASK;
+	pci_pot[3].pobar = (CFG_PCI2_MEM_PHYS >> 12) & POBAR_BA_MASK;
+	pci_pot[3].pocmr = POCMR_EN | POCMR_PCI2 | POCMR_PREFETCH_EN | POCMR_CM_256M;
+
+	/* PCI2 IO space */
+	pci_pot[4].potar = (CFG_PCI2_IO_BASE >> 12) & POTAR_TA_MASK;
+	pci_pot[4].pobar = (CFG_PCI2_IO_PHYS >> 12) & POBAR_BA_MASK;
+	pci_pot[4].pocmr = POCMR_EN | POCMR_PCI2 | POCMR_IO | POCMR_CM_16M;
+
+	/* PCI2 mmio - non-prefetch mem space */
+	pci_pot[5].potar = (CFG_PCI2_MMIO_BASE >> 12) & POTAR_TA_MASK;
+	pci_pot[5].pobar = (CFG_PCI2_MMIO_PHYS >> 12) & POBAR_BA_MASK;
+	pci_pot[5].pocmr = POCMR_EN | POCMR_PCI2 | POCMR_CM_256M;
+
+	/*
+	 * Configure PCI Inbound Translation Windows
+	 */
+
+	/* we need RAM mapped to PCI space for the devices to
+	 * access main memory */
+	pci_ctrl[1].pitar1 = 0x0;
+	pci_ctrl[1].pibar1 = 0x0;
+	pci_ctrl[1].piebar1 = 0x0;
+	pci_ctrl[1].piwar1 =
+	    PIWAR_EN | PIWAR_PF | PIWAR_RTT_SNOOP | PIWAR_WTT_SNOOP |
+	    (__ilog2(gd->ram_size) - 1);
+
+	hose->first_busno = pci_hose[0].last_busno + 1;
+	hose->last_busno = 0xff;
+
+	/* PCI memory prefetch space */
+	pci_set_region(hose->regions + 0,
+		       CFG_PCI2_MEM_BASE,
+		       CFG_PCI2_MEM_PHYS,
+		       CFG_PCI2_MEM_SIZE, PCI_REGION_MEM | PCI_REGION_PREFETCH);
+
+	/* PCI memory space */
+	pci_set_region(hose->regions + 1,
+		       CFG_PCI2_MMIO_BASE,
+		       CFG_PCI2_MMIO_PHYS, CFG_PCI2_MMIO_SIZE, PCI_REGION_MEM);
+
+	/* PCI IO space */
+	pci_set_region(hose->regions + 2,
+		       CFG_PCI2_IO_BASE,
+		       CFG_PCI2_IO_PHYS, CFG_PCI2_IO_SIZE, PCI_REGION_IO);
+
+	/* System memory space */
+	pci_set_region(hose->regions + 3,
+		       CONFIG_PCI_SYS_MEM_BUS,
+		       CONFIG_PCI_SYS_MEM_PHYS,
+		       gd->ram_size, PCI_REGION_MEM | PCI_REGION_MEMORY);
+
+	hose->region_count = 4;
+
+	pci_setup_indirect(hose,
+			   (CFG_IMMR + 0x8380), (CFG_IMMR + 0x8384));
+
+	pci_register_hose(hose);
+
+	/*
+	 * Write to Command register
+	 */
+	reg16 = 0xff;
+	dev = PCI_BDF(hose->first_busno, 0, 0);
+	pci_hose_read_config_word(hose, dev, PCI_COMMAND, &reg16);
+	reg16 |= PCI_COMMAND_SERR | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY;
+	pci_hose_write_config_word(hose, dev, PCI_COMMAND, reg16);
+
+	/*
+	 * Clear non-reserved bits in status register.
+	 */
+	pci_hose_write_config_word(hose, dev, PCI_STATUS, 0xffff);
+	pci_hose_write_config_byte(hose, dev, PCI_LATENCY_TIMER, 0x80);
+	pci_hose_write_config_byte(hose, dev, PCI_CACHE_LINE_SIZE, 0x08);
+
+	/*
+	 * Hose scan.
+	 */
+	hose->last_busno = pci_hose_scan(hose);
+#endif
+}
+
+#endif				/* CONFIG_PCI */
+#ifdef CONFIG_OF_FLAT_TREE
+void
+ft_pci_setup(void *blob, bd_t *bd)
+{
+       	u32 *p;
+       	int len;
+
+       	p = (u32 *)ft_get_prop(blob, "/" OF_SOC "/pci@8500/bus-range", &len);
+       	if (p != NULL) {
+		p[0] = pci_hose[0].first_busno;
+		p[1] = pci_hose[0].last_busno;
+       	}
+
+#ifdef CONFIG_MPC83XX_PCI2
+	p = (u32 *)ft_get_prop(blob, "/" OF_SOC "/pci@8600/bus-range", &len);
+	if (p != NULL) {
+		p[0] = pci_hose[1].first_busno;
+		p[1] = pci_hose[1].last_busno;
+	}
+#endif
+}
+#endif /* CONFIG_OF_FLAT_TREE */