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233 lines
6.3 KiB
233 lines
6.3 KiB
/*
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* arch/ppc/platforms/85xx/sbc8560.c
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*
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* Wind River SBC8560 board specific routines
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*
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* Maintainer: Kumar Gala <kumar.gala@freescale.com>
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*
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* Copyright 2004 Freescale Semiconductor Inc.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*/
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#include <linux/config.h>
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#include <linux/stddef.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/reboot.h>
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#include <linux/pci.h>
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#include <linux/kdev_t.h>
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#include <linux/major.h>
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#include <linux/console.h>
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#include <linux/delay.h>
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#include <linux/irq.h>
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#include <linux/seq_file.h>
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#include <linux/root_dev.h>
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#include <linux/serial.h>
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#include <linux/tty.h> /* for linux/serial_core.h */
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#include <linux/serial_core.h>
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#include <linux/initrd.h>
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#include <linux/module.h>
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#include <linux/fsl_devices.h>
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#include <asm/system.h>
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#include <asm/pgtable.h>
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#include <asm/page.h>
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#include <asm/atomic.h>
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#include <asm/time.h>
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#include <asm/io.h>
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#include <asm/machdep.h>
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#include <asm/open_pic.h>
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#include <asm/bootinfo.h>
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#include <asm/pci-bridge.h>
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#include <asm/mpc85xx.h>
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#include <asm/irq.h>
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#include <asm/immap_85xx.h>
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#include <asm/kgdb.h>
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#include <asm/ppc_sys.h>
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#include <mm/mmu_decl.h>
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#include <syslib/ppc85xx_common.h>
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#include <syslib/ppc85xx_setup.h>
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#ifdef CONFIG_SERIAL_8250
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static void __init
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sbc8560_early_serial_map(void)
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{
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struct uart_port uart_req;
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/* Setup serial port access */
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memset(&uart_req, 0, sizeof (uart_req));
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uart_req.irq = MPC85xx_IRQ_EXT9;
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uart_req.flags = STD_COM_FLAGS;
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uart_req.uartclk = BASE_BAUD * 16;
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uart_req.iotype = SERIAL_IO_MEM;
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uart_req.mapbase = UARTA_ADDR;
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uart_req.membase = ioremap(uart_req.mapbase, MPC85xx_UART0_SIZE);
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uart_req.type = PORT_16650;
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#if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)
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gen550_init(0, &uart_req);
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#endif
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if (early_serial_setup(&uart_req) != 0)
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printk("Early serial init of port 0 failed\n");
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/* Assume early_serial_setup() doesn't modify uart_req */
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uart_req.line = 1;
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uart_req.mapbase = UARTB_ADDR;
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uart_req.membase = ioremap(uart_req.mapbase, MPC85xx_UART1_SIZE);
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uart_req.irq = MPC85xx_IRQ_EXT10;
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#if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)
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gen550_init(1, &uart_req);
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#endif
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if (early_serial_setup(&uart_req) != 0)
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printk("Early serial init of port 1 failed\n");
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}
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#endif
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/* ************************************************************************
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*
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* Setup the architecture
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*
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*/
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static void __init
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sbc8560_setup_arch(void)
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{
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bd_t *binfo = (bd_t *) __res;
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unsigned int freq;
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struct gianfar_platform_data *pdata;
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/* get the core frequency */
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freq = binfo->bi_intfreq;
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if (ppc_md.progress)
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ppc_md.progress("sbc8560_setup_arch()", 0);
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/* Set loops_per_jiffy to a half-way reasonable value,
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for use until calibrate_delay gets called. */
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loops_per_jiffy = freq / HZ;
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#ifdef CONFIG_PCI
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/* setup PCI host bridges */
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mpc85xx_setup_hose();
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#endif
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#ifdef CONFIG_SERIAL_8250
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sbc8560_early_serial_map();
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#endif
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#ifdef CONFIG_SERIAL_TEXT_DEBUG
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/* Invalidate the entry we stole earlier the serial ports
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* should be properly mapped */
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invalidate_tlbcam_entry(num_tlbcam_entries - 1);
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#endif
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/* setup the board related information for the enet controllers */
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pdata = (struct gianfar_platform_data *) ppc_sys_get_pdata(MPC85xx_TSEC1);
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if (pdata) {
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pdata->board_flags = FSL_GIANFAR_BRD_HAS_PHY_INTR;
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pdata->interruptPHY = MPC85xx_IRQ_EXT6;
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pdata->phyid = 25;
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/* fixup phy address */
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pdata->phy_reg_addr += binfo->bi_immr_base;
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memcpy(pdata->mac_addr, binfo->bi_enetaddr, 6);
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}
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pdata = (struct gianfar_platform_data *) ppc_sys_get_pdata(MPC85xx_TSEC2);
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if (pdata) {
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pdata->board_flags = FSL_GIANFAR_BRD_HAS_PHY_INTR;
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pdata->interruptPHY = MPC85xx_IRQ_EXT7;
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pdata->phyid = 26;
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/* fixup phy address */
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pdata->phy_reg_addr += binfo->bi_immr_base;
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memcpy(pdata->mac_addr, binfo->bi_enet1addr, 6);
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}
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#ifdef CONFIG_BLK_DEV_INITRD
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if (initrd_start)
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ROOT_DEV = Root_RAM0;
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else
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#endif
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#ifdef CONFIG_ROOT_NFS
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ROOT_DEV = Root_NFS;
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#else
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ROOT_DEV = Root_HDA1;
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#endif
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}
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/* ************************************************************************ */
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void __init
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platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
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unsigned long r6, unsigned long r7)
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{
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/* parse_bootinfo must always be called first */
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parse_bootinfo(find_bootinfo());
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/*
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* If we were passed in a board information, copy it into the
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* residual data area.
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*/
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if (r3) {
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memcpy((void *) __res, (void *) (r3 + KERNELBASE),
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sizeof (bd_t));
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}
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#ifdef CONFIG_SERIAL_TEXT_DEBUG
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/* Use the last TLB entry to map CCSRBAR to allow access to DUART regs */
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settlbcam(num_tlbcam_entries - 1, UARTA_ADDR,
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UARTA_ADDR, 0x1000, _PAGE_IO, 0);
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#endif
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#if defined(CONFIG_BLK_DEV_INITRD)
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/*
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* If the init RAM disk has been configured in, and there's a valid
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* starting address for it, set it up.
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*/
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if (r4) {
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initrd_start = r4 + KERNELBASE;
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initrd_end = r5 + KERNELBASE;
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}
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#endif /* CONFIG_BLK_DEV_INITRD */
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/* Copy the kernel command line arguments to a safe place. */
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if (r6) {
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*(char *) (r7 + KERNELBASE) = 0;
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strcpy(cmd_line, (char *) (r6 + KERNELBASE));
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}
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identify_ppc_sys_by_id(mfspr(SPRN_SVR));
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/* setup the PowerPC module struct */
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ppc_md.setup_arch = sbc8560_setup_arch;
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ppc_md.show_cpuinfo = sbc8560_show_cpuinfo;
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ppc_md.init_IRQ = sbc8560_init_IRQ;
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ppc_md.get_irq = openpic_get_irq;
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ppc_md.restart = mpc85xx_restart;
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ppc_md.power_off = mpc85xx_power_off;
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ppc_md.halt = mpc85xx_halt;
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ppc_md.find_end_of_memory = mpc85xx_find_end_of_memory;
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ppc_md.time_init = NULL;
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ppc_md.set_rtc_time = NULL;
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ppc_md.get_rtc_time = NULL;
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ppc_md.calibrate_decr = mpc85xx_calibrate_decr;
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#if defined(CONFIG_SERIAL_8250) && defined(CONFIG_SERIAL_TEXT_DEBUG)
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ppc_md.progress = gen550_progress;
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#endif /* CONFIG_SERIAL_8250 && CONFIG_SERIAL_TEXT_DEBUG */
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#if defined(CONFIG_SERIAL_8250) && defined(CONFIG_KGDB)
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ppc_md.early_serial_map = sbc8560_early_serial_map;
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#endif /* CONFIG_SERIAL_8250 && CONFIG_KGDB */
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if (ppc_md.progress)
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ppc_md.progress("sbc8560_init(): exit", 0);
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}
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