patch-2.4.23 linux-2.4.23/arch/ppc/platforms/ocotea.c

• Lines: 442
• Date: 2003-11-28 10:26:19.000000000 -0800
• Orig file: linux-2.4.22/arch/ppc/platforms/ocotea.c
• Orig date: 1969-12-31 16:00:00.000000000 -0800

diff -urN linux-2.4.22/arch/ppc/platforms/ocotea.c linux-2.4.23/arch/ppc/platforms/ocotea.c
@@ -0,0 +1,441 @@
+/*
+ * arch/ppc/platforms/ocotea.c
+ *
+ * Ocotea board specific routines
+ *
+ * Matt Porter <mporter@mvista.com>
+ *
+ * Copyright 2003 MontaVista Software 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;  either version 2 of the  License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/config.h>
+#include <linux/stddef.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/reboot.h>
+#include <linux/pci.h>
+#include <linux/kdev_t.h>
+#include <linux/types.h>
+#include <linux/major.h>
+#include <linux/blk.h>
+#include <linux/console.h>
+#include <linux/delay.h>
+#include <linux/ide.h>
+#include <linux/irq.h>
+#include <linux/seq_file.h>
+#include <linux/tty.h>
+#include <linux/serial.h>
+
+#include <asm/system.h>
+#include <asm/pgtable.h>
+#include <asm/page.h>
+#include <asm/dma.h>
+#include <asm/io.h>
+#include <asm/machdep.h>
+#include <asm/pci-bridge.h>
+#include <asm/time.h>
+#include <asm/todc.h>
+#include <asm/bootinfo.h>
+#include <asm/ppc4xx_pic.h>
+
+extern void abort(void);
+extern int pckbd_setkeycode(unsigned int scancode, unsigned int keycode);
+extern int pckbd_getkeycode(unsigned int scancode);
+extern int pckbd_translate(unsigned char scancode, unsigned char *keycode,
+			   char raw_mode);
+extern void gen550_progress(char *, unsigned short);
+extern void gen550_init(int, struct serial_struct *);
+
+/* Global Variables */
+unsigned char __res[sizeof (bd_t)];
+
+static void __init
+ocotea_calibrate_decr(void)
+{
+	unsigned int freq;
+
+	freq = OCOTEA_SYSCLK;
+	
+	tb_ticks_per_jiffy = freq / HZ;
+	tb_to_us = mulhwu_scale_factor(freq, 1000000);
+
+	/* Set the time base to zero */
+	mtspr(SPRN_TBWL, 0);
+	mtspr(SPRN_TBWU, 0);
+
+	/* Clear any pending timer interrupts */
+	mtspr(SPRN_TSR, TSR_ENW | TSR_WIS | TSR_DIS | TSR_FIS);
+
+	/* Enable decrementer interrupt */
+	mtspr(SPRN_TCR, TCR_DIE);
+}
+
+static int
+ocotea_show_cpuinfo(struct seq_file *m)
+{
+	seq_printf(m, "vendor\t\t: IBM\n");
+	seq_printf(m, "machine\t\t: PPC440GX EVB (Ocotea)\n");
+
+	return 0;
+}
+static inline int
+ocotea_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
+{
+	static char pci_irq_table[][4] =
+	/*
+	 *	PCI IDSEL/INTPIN->INTLINE 
+	 * 	   A   B   C   D
+	 */
+	{
+		{ 23, 23, 23, 23 },	/* IDSEL 1 - PCI Slot 0 */
+		{ 24, 24, 24, 24 },	/* IDSEL 2 - PCI Slot 1 */
+		{ 25, 25, 25, 25 },	/* IDSEL 3 - PCI Slot 2 */
+		{ 26, 26, 26, 26 },	/* IDSEL 4 - PCI Slot 3 */
+	};
+
+	const long min_idsel = 1, max_idsel = 4, irqs_per_slot = 4;
+	return PCI_IRQ_TABLE_LOOKUP;
+}
+
+#define PCIX_READW(offset) \
+	(readw((u32)pcix_reg_base+offset))
+
+#define PCIX_WRITEW(value, offset) \
+	(writew(value, (u32)pcix_reg_base+offset))
+
+#define PCIX_WRITEL(value, offset) \
+	(writel(value, (u32)pcix_reg_base+offset))
+
+/*
+ * FIXME: This is only here to "make it work".  This will move
+ * to a ibm_pcix.c which will contain a generic IBM PCIX bridge
+ * configuration library. -Matt
+ */
+static void __init
+ocotea_setup_pcix(void)
+{
+	void *pcix_reg_base;
+
+	pcix_reg_base = ioremap64(PCIX0_REG_BASE, PCIX0_REG_SIZE);
+
+	/* Enable PCIX0 I/O, Mem, and Busmaster cycles */
+	PCIX_WRITEW(PCIX_READW(PCIX0_COMMAND) | PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER, PCIX0_COMMAND);
+
+	/* Disable all windows */
+	PCIX_WRITEL(0, PCIX0_POM0SA);
+	PCIX_WRITEL(0, PCIX0_POM1SA);
+	PCIX_WRITEL(0, PCIX0_POM2SA);
+	PCIX_WRITEL(0, PCIX0_PIM0SA);
+	PCIX_WRITEL(0, PCIX0_PIM0SAH);
+	PCIX_WRITEL(0, PCIX0_PIM1SA);
+	PCIX_WRITEL(0, PCIX0_PIM2SA);
+	PCIX_WRITEL(0, PCIX0_PIM2SAH);
+	
+	/* Setup 2GB PLB->PCI outbound mem window (3_8000_0000->0_8000_0000) */
+	PCIX_WRITEL(0x00000003, PCIX0_POM0LAH);
+	PCIX_WRITEL(0x80000000, PCIX0_POM0LAL);
+	PCIX_WRITEL(0x00000000, PCIX0_POM0PCIAH);
+	PCIX_WRITEL(0x80000000, PCIX0_POM0PCIAL);
+	PCIX_WRITEL(0x80000001, PCIX0_POM0SA);
+
+	/* Setup 2GB PCI->PLB inbound memory window at 0, enable MSIs */
+	PCIX_WRITEL(0x00000000, PCIX0_PIM0LAH);
+	PCIX_WRITEL(0x00000000, PCIX0_PIM0LAL);
+	PCIX_WRITEL(0xe0000007, PCIX0_PIM0SA);
+
+	eieio();
+}
+
+static void __init
+ocotea_setup_hose(void)
+{
+	struct pci_controller *hose;
+
+	/* Configure windows on the PCI-X host bridge */
+	ocotea_setup_pcix();
+
+	hose = pcibios_alloc_controller();
+
+	if (!hose)
+		return;
+
+	hose->first_busno = 0;
+	hose->last_busno = 0xff;
+
+	hose->pci_mem_offset = OCOTEA_PCI_MEM_OFFSET;
+
+	pci_init_resource(&hose->io_resource,
+			OCOTEA_PCI_LOWER_IO,
+			OCOTEA_PCI_UPPER_IO,
+			IORESOURCE_IO,
+			"PCI host bridge");
+
+	pci_init_resource(&hose->mem_resources[0],
+			OCOTEA_PCI_LOWER_MEM,
+			OCOTEA_PCI_UPPER_MEM,
+			IORESOURCE_MEM,
+			"PCI host bridge");
+
+	hose->io_space.start = OCOTEA_PCI_LOWER_IO;
+	hose->io_space.end = OCOTEA_PCI_UPPER_IO;
+	hose->mem_space.start = OCOTEA_PCI_LOWER_MEM;
+	hose->mem_space.end = OCOTEA_PCI_UPPER_MEM;
+	isa_io_base =
+		(unsigned long)ioremap64(OCOTEA_PCI_IO_BASE, OCOTEA_PCI_IO_SIZE);
+	hose->io_base_virt = (void *)isa_io_base;
+
+	setup_indirect_pci(hose,
+			OCOTEA_PCI_CFGA_PLB32,
+			OCOTEA_PCI_CFGD_PLB32);
+	hose->set_cfg_type = 1;
+
+	hose->last_busno = pciauto_bus_scan(hose, hose->first_busno);
+
+	ppc_md.pci_swizzle = common_swizzle;
+	ppc_md.pci_map_irq = ocotea_map_irq;
+}
+
+
+TODC_ALLOC();
+
+static void __init
+ocotea_early_serial_map(void)
+{
+	struct serial_struct serial_req;
+
+	/* Setup ioremapped serial port access */
+	memset(&serial_req, 0, sizeof(serial_req));
+	serial_req.line = 0;
+	serial_req.baud_base = BASE_BAUD;
+	serial_req.port = 0;
+	serial_req.irq = 0;
+	serial_req.flags = ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST;
+	serial_req.io_type = SERIAL_IO_MEM;
+	serial_req.iomem_base = ioremap64(PPC440GX_UART0_ADDR, 8);
+	serial_req.iomem_reg_shift = 0;
+
+#if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)
+	/* Configure debug serial access */
+	gen550_init(0, &serial_req);
+#endif
+
+	if (early_serial_setup(&serial_req) != 0) {
+		printk("Early serial init of port 0 failed\n");
+	}
+
+	/* Assume early_serial_setup() doesn't modify serial_req */
+	serial_req.line = 1;
+	serial_req.port = 1;
+	serial_req.irq = 1; 
+	serial_req.iomem_base = ioremap64(PPC440GX_UART1_ADDR, 8);
+
+#if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)
+	/* Configure debug serial access */
+	gen550_init(1, &serial_req);
+#endif
+
+	if (early_serial_setup(&serial_req) != 0) {
+		printk("Early serial init of port 1 failed\n");
+	}
+}
+
+static void __init
+ocotea_setup_arch(void)
+{
+	unsigned char *addr;
+	unsigned long long mac64;
+	bd_t *bip = (bd_t *) __res;
+
+	/* Retrieve MAC addresses from flash */
+	addr = ioremap64(OCOTEA_MAC_BASE, OCOTEA_MAC_SIZE);
+	mac64 = simple_strtoull(addr, 0, 16);
+	memcpy(bip->bi_enetaddr[0], (char *)&mac64+2, 6);
+	mac64 = simple_strtoull(addr+OCOTEA_MAC1_OFFSET, 0, 16);
+	memcpy(bip->bi_enetaddr[1], (char *)&mac64+2, 6);
+	iounmap(addr);
+
+	/* Set EMAC PHY map to not probe address 0x00 */
+	emac_phy_map[0] = 0x00000001;
+	emac_phy_map[1] = 0x00000001;
+
+#if !defined(CONFIG_BDI_SWITCH)
+	/*
+	 * The Abatron BDI JTAG debugger does not tolerate others
+	 * mucking with the debug registers.
+	 */
+        mtspr(SPRN_DBCR0, (DBCR0_TDE | DBCR0_IDM));
+#endif
+
+	/* Setup TODC access */
+	TODC_INIT(TODC_TYPE_DS1743,
+			0,
+			0,
+			ioremap64(OCOTEA_RTC_ADDR, OCOTEA_RTC_SIZE),
+			8);
+
+	/* init to some ~sane value until calibrate_delay() runs */
+        loops_per_jiffy = 50000000/HZ;
+
+	/* Setup PCI host bridge */
+	ocotea_setup_hose();
+	
+#ifdef CONFIG_BLK_DEV_INITRD
+	if (initrd_start)
+		ROOT_DEV = to_kdev_t(0x0100); /* /dev/ram */
+	else
+#endif
+#ifdef CONFIG_ROOT_NFS
+		ROOT_DEV = to_kdev_t(0x00ff); /* /dev/nfs */
+#else
+		ROOT_DEV = to_kdev_t(0x0301); /* /dev/hda1 */
+#endif
+
+#ifdef CONFIG_VT
+	conswitchp = &dummy_con;
+#endif
+
+	ocotea_early_serial_map();
+
+	/* Identify the system */
+	printk("IBM Ocotea port (MontaVista Software, Inc. <source@mvista.com>)\n");
+}
+
+static void
+ocotea_restart(char *cmd)
+{
+	local_irq_disable();
+	abort();
+}
+
+static void
+ocotea_power_off(void)
+{
+	local_irq_disable();
+	for(;;);
+}
+
+static void
+ocotea_halt(void)
+{
+	local_irq_disable();
+	for(;;);
+}
+
+/*
+ * Read the 440GX memory controller to get size of system memory.
+ */
+static unsigned long __init
+ocotea_find_end_of_memory(void)
+{
+	u32 i, bank_config;
+	u32 mem_size = 0;
+
+	for (i=0; i<4; i++)
+	{
+		switch (i)
+		{
+			case 0:
+				mtdcr(DCRN_SDRAM0_CFGADDR, SDRAM0_B0CR);
+				break;
+			case 1:
+				mtdcr(DCRN_SDRAM0_CFGADDR, SDRAM0_B1CR);
+				break;
+			case 2:
+				mtdcr(DCRN_SDRAM0_CFGADDR, SDRAM0_B2CR);
+				break;
+			case 3:
+				mtdcr(DCRN_SDRAM0_CFGADDR, SDRAM0_B3CR);
+				break;
+		}
+
+		bank_config = mfdcr(DCRN_SDRAM0_CFGDATA);
+
+		if (!(bank_config & SDRAM_CONFIG_BANK_ENABLE))
+			continue;
+		switch (SDRAM_CONFIG_BANK_SIZE(bank_config))
+		{
+			case SDRAM_CONFIG_SIZE_8M:
+				mem_size += PPC44x_MEM_SIZE_8M;
+				break;
+			case SDRAM_CONFIG_SIZE_16M:
+				mem_size += PPC44x_MEM_SIZE_16M;
+				break;
+			case SDRAM_CONFIG_SIZE_32M:
+				mem_size += PPC44x_MEM_SIZE_32M;
+				break;
+			case SDRAM_CONFIG_SIZE_64M:
+				mem_size += PPC44x_MEM_SIZE_64M;
+				break;
+			case SDRAM_CONFIG_SIZE_128M:
+				mem_size += PPC44x_MEM_SIZE_128M;
+				break;
+			case SDRAM_CONFIG_SIZE_256M:
+				mem_size += PPC44x_MEM_SIZE_256M;
+				break;
+			case SDRAM_CONFIG_SIZE_512M:
+				mem_size += PPC44x_MEM_SIZE_512M;
+				break;
+		}
+	}
+	return mem_size;
+}
+
+static void __init
+ocotea_init_irq(void)
+{
+	int i;
+
+	/* Enable PPC440GP interrupt compatibility mode */
+	SDR_WRITE(DCRN_SDR_MFR,SDR_READ(DCRN_SDR_MFR) | DCRN_SDR_MFR_PCM);
+
+	ppc4xx_pic_init();
+
+	for (i = 0; i < NR_IRQS; i++)
+		irq_desc[i].handler = ppc4xx_pic;
+}
+
+void __init platform_init(unsigned long r3, unsigned long r4,
+		unsigned long r5, unsigned long r6, unsigned long r7)
+{
+	parse_bootinfo(find_bootinfo());
+
+	ppc_md.setup_arch = ocotea_setup_arch;
+	ppc_md.show_cpuinfo = ocotea_show_cpuinfo;
+	ppc_md.init_IRQ = ocotea_init_irq;
+	ppc_md.get_irq = NULL;		/* Set in ppc4xx_pic_init() */
+
+	ppc_md.find_end_of_memory = ocotea_find_end_of_memory;
+
+	ppc_md.restart = ocotea_restart;
+	ppc_md.power_off = ocotea_power_off;
+	ppc_md.halt = ocotea_halt;
+
+	ppc_md.calibrate_decr = ocotea_calibrate_decr;
+	ppc_md.time_init = todc_time_init;
+	ppc_md.set_rtc_time = todc_set_rtc_time;
+	ppc_md.get_rtc_time = todc_get_rtc_time;
+
+	ppc_md.nvram_read_val = todc_direct_read_val;
+	ppc_md.nvram_write_val = todc_direct_write_val;
+#if defined(CONFIG_VT) 
+	ppc_md.kbd_setkeycode = pckbd_setkeycode;
+	ppc_md.kbd_getkeycode = pckbd_getkeycode;
+	ppc_md.kbd_translate = pckbd_translate;
+	ppc_md.kbd_unexpected_up = pckbd_unexpected_up;
+	ppc_md.kbd_leds = pckbd_leds;
+	ppc_md.kbd_init_hw = 0;
+#endif
+
+#ifdef CONFIG_SERIAL_TEXT_DEBUG
+	ppc_md.progress = gen550_progress;
+#endif /* CONFIG_SERIAL_TEXT_DEBUG */
+#ifdef CONFIG_KGDB
+	ppc_md.early_serial_map = ocotea_early_serial_map;
+#endif
+}