GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

2026-09-06 03:52:57 +08:00
commit b1928b41c0
21813 changed files with 4413081 additions and 0 deletions
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+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2006-2009 Freescale Semiconductor, Inc.
+ */
+
+#include <common.h>
+#include <init.h>
+
+#include <asm/mmu.h>
+#include <asm/io.h>
+#include <mpc83xx.h>
+#include <pci.h>
+#include <i2c.h>
+#include <asm/fsl_i2c.h>
+
+static struct pci_region pci1_regions[] = {
+	{
+		bus_start: CONFIG_SYS_PCI1_MEM_BASE,
+		phys_start: CONFIG_SYS_PCI1_MEM_PHYS,
+		size: CONFIG_SYS_PCI1_MEM_SIZE,
+		flags: PCI_REGION_MEM | PCI_REGION_PREFETCH
+	},
+	{
+		bus_start: CONFIG_SYS_PCI1_IO_BASE,
+		phys_start: CONFIG_SYS_PCI1_IO_PHYS,
+		size: CONFIG_SYS_PCI1_IO_SIZE,
+		flags: PCI_REGION_IO
+	},
+	{
+		bus_start: CONFIG_SYS_PCI1_MMIO_BASE,
+		phys_start: CONFIG_SYS_PCI1_MMIO_PHYS,
+		size: CONFIG_SYS_PCI1_MMIO_SIZE,
+		flags: PCI_REGION_MEM
+	},
+};
+
+#ifdef CONFIG_MPC83XX_PCI2
+static struct pci_region pci2_regions[] = {
+	{
+		bus_start: CONFIG_SYS_PCI2_MEM_BASE,
+		phys_start: CONFIG_SYS_PCI2_MEM_PHYS,
+		size: CONFIG_SYS_PCI2_MEM_SIZE,
+		flags: PCI_REGION_MEM | PCI_REGION_PREFETCH
+	},
+	{
+		bus_start: CONFIG_SYS_PCI2_IO_BASE,
+		phys_start: CONFIG_SYS_PCI2_IO_PHYS,
+		size: CONFIG_SYS_PCI2_IO_SIZE,
+		flags: PCI_REGION_IO
+	},
+	{
+		bus_start: CONFIG_SYS_PCI2_MMIO_BASE,
+		phys_start: CONFIG_SYS_PCI2_MMIO_PHYS,
+		size: CONFIG_SYS_PCI2_MMIO_SIZE,
+		flags: PCI_REGION_MEM
+	},
+};
+#endif
+
+void pci_init_board(void)
+{
+	volatile immap_t *immr = (volatile immap_t *)CONFIG_SYS_IMMR;
+	volatile clk83xx_t *clk = (volatile clk83xx_t *)&immr->clk;
+	volatile law83xx_t *pci_law = immr->sysconf.pcilaw;
+#ifndef CONFIG_MPC83XX_PCI2
+	struct pci_region *reg[] = { pci1_regions };
+#else
+	struct pci_region *reg[] = { pci1_regions, pci2_regions };
+#endif
+	u8 reg8;
+
+#if defined(CONFIG_SYS_I2C)
+	i2c_set_bus_num(1);
+	/* Read the PCI_M66EN jumper setting */
+	if ((i2c_read(CONFIG_SYS_I2C_8574_ADDR2, 0, 0, &reg8, sizeof(reg8)) == 0) ||
+	    (i2c_read(CONFIG_SYS_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);
+
+	/* Configure PCI Local Access Windows */
+	pci_law[0].bar = CONFIG_SYS_PCI1_MEM_PHYS & LAWBAR_BAR;
+	pci_law[0].ar = LAWAR_EN | LAWAR_SIZE_1G;
+
+	pci_law[1].bar = CONFIG_SYS_PCI1_IO_PHYS & LAWBAR_BAR;
+	pci_law[1].ar = LAWAR_EN | LAWAR_SIZE_32M;
+
+	udelay(2000);
+
+#ifndef CONFIG_MPC83XX_PCI2
+	mpc83xx_pci_init(1, reg);
+#else
+	mpc83xx_pci_init(2, reg);
+#endif
+}