/*
* arch/ppc/platforms/85xx/mpc8540_ads.c
*
* MPC8540ADS board specific routines
*
* Maintainer: Kumar Gala <galak@kernel.crashing.org>
*
* Copyright 2004 Freescale Semiconductor 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/major.h>
#include <linux/console.h>
#include <linux/delay.h>
#include <linux/seq_file.h>
#include <linux/root_dev.h>
#include <linux/serial.h>
#include <linux/tty.h> /* for linux/serial_core.h */
#include <linux/serial_core.h>
#include <linux/initrd.h>
#include <linux/module.h>
#include <linux/fsl_devices.h>
#include <asm/system.h>
#include <asm/pgtable.h>
#include <asm/page.h>
#include <asm/atomic.h>
#include <asm/time.h>
#include <asm/io.h>
#include <asm/machdep.h>
#include <asm/open_pic.h>
#include <asm/bootinfo.h>
#include <asm/pci-bridge.h>
#include <asm/mpc85xx.h>
#include <asm/irq.h>
#include <asm/immap_85xx.h>
#include <asm/kgdb.h>
#include <asm/ppc_sys.h>
#include <mm/mmu_decl.h>
#include <syslib/ppc85xx_setup.h>
/* ************************************************************************
*
* Setup the architecture
*
*/
static void __init
mpc8540ads_setup_arch(void)
{
bd_t *binfo = (bd_t *) __res;
unsigned int freq;
struct gianfar_platform_data *pdata;
struct gianfar_mdio_data *mdata;
/* get the core frequency */
freq = binfo->bi_intfreq;
if (ppc_md.progress)
ppc_md.progress("mpc8540ads_setup_arch()", 0);
/* Set loops_per_jiffy to a half-way reasonable value,
for use until calibrate_delay gets called. */
loops_per_jiffy = freq / HZ;
#ifdef CONFIG_PCI
/* setup PCI host bridges */
mpc85xx_setup_hose();
#endif
#ifdef CONFIG_SERIAL_8250
mpc85xx_early_serial_map();
#endif
#ifdef CONFIG_SERIAL_TEXT_DEBUG
/* Invalidate the entry we stole earlier the serial ports
* should be properly mapped */
invalidate_tlbcam_entry(num_tlbcam_entries - 1);
#endif
/* setup the board related info for the MDIO bus */
mdata = (struct gianfar_mdio_data *) ppc_sys_get_pdata(MPC85xx_MDIO);
mdata->irq[0] = MPC85xx_IRQ_EXT5;
mdata->irq[1] = MPC85xx_IRQ_EXT5;
mdata->irq[2] = -1;
mdata->irq[3] = MPC85xx_IRQ_EXT5;
mdata->irq[31] = -1;
/* setup the board related information for the enet controllers */
pdata = (struct gianfar_platform_data *) ppc_sys_get_pdata(MPC85xx_TSEC1);
if (pdata) {
pdata->board_flags = FSL_GIANFAR_BRD_HAS_PHY_INTR;
pdata->bus_id = 0;
pdata->phy_id = 0;
memcpy(pdata->mac_addr, binfo->bi_enetaddr, 6);
}
pdata = (struct gianfar_platform_data *) ppc_sys_get_pdata(MPC85xx_TSEC2);
if (pdata) {
pdata->board_flags = FSL_GIANFAR_BRD_HAS_PHY_INTR;
pdata->bus_id = 0;
pdata->phy_id = 1;
memcpy(pdata->mac_addr, binfo->bi_enet1addr, 6);
}
pdata = (struct gianfar_platform_data *) ppc_sys_get_pdata(MPC85xx_FEC);
if (pdata) {
pdata->board_flags = 0;
pdata->bus_id = 0;
pdata->phy_id = 3;
memcpy(pdata->mac_addr, binfo->bi_enet2addr, 6);
}
#ifdef CONFIG_BLK_DEV_INITRD
if (initrd_start)
ROOT_DEV = Root_RAM0;
else
#endif
#ifdef CONFIG_ROOT_NFS
ROOT_DEV = Root_NFS;
#else
ROOT_DEV = Root_HDA1;
#endif
}
/* ************************************************************************ */
void __init
platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
unsigned long r6, unsigned long r7)
{
/* parse_bootinfo must always be called first */
parse_bootinfo(find_bootinfo());
/*
* If we were passed in a board information, copy it into the
* residual data area.
*/
if (r3) {
memcpy((void *) __res, (void *) (r3 + KERNELBASE),
sizeof (bd_t));
}
#ifdef CONFIG_SERIAL_TEXT_DEBUG
{
bd_t *binfo = (bd_t *) __res;
struct uart_port p;
/* Use the last TLB entry to map CCSRBAR to allow access to DUART regs */
settlbcam(num_tlbcam_entries - 1, binfo->bi_immr_base,
binfo->bi_immr_base, MPC85xx_CCSRBAR_SIZE, _PAGE_IO, 0);
memset(&p, 0, sizeof (p));
p.iotype = UPIO_MEM;
p.membase = (void *) binfo->bi_immr_base + MPC85xx_UART0_OFFSET;
p.uartclk = binfo->bi_busfreq;
gen550_init(0, &p);
memset(&p, 0, sizeof (p));
p.iotype = UPIO_MEM;
p.membase = (void *) binfo->bi_immr_base + MPC85xx_UART1_OFFSET;
p.uartclk = binfo->bi_busfreq;
gen550_init(1, &p);
}
#endif
#if defined(CONFIG_BLK_DEV_INITRD)
/*
* If the init RAM disk has been configured in, and there's a valid
* starting address for it, set it up.
*/
if (r4) {
initrd_start = r4 + KERNELBASE;
initrd_end = r5 + KERNELBASE;
}
#endif /* CONFIG_BLK_DEV_INITRD */
/* Copy the kernel command line arguments to a safe place. */
if (r6) {
*(char *) (r7 + KERNELBASE) = 0;
strcpy(cmd_line, (char *) (r6 + KERNELBASE));
}
identify_ppc_sys_by_id(mfspr(SPRN_SVR));
/* setup the PowerPC module struct */
ppc_md.setup_arch = mpc8540ads_setup_arch;
ppc_md.show_cpuinfo = mpc85xx_ads_show_cpuinfo;
ppc_md.init_IRQ = mpc85xx_ads_init_IRQ;
ppc_md.get_irq = openpic_get_irq;
ppc_md.restart = mpc85xx_restart;
ppc_md.power_off = mpc85xx_power_off;
ppc_md.halt = mpc85xx_halt;
ppc_md.find_end_of_memory = mpc85xx_find_end_of_memory;
ppc_md.time_init = NULL;
ppc_md.set_rtc_time = NULL;
ppc_md.get_rtc_time = NULL;
ppc_md.calibrate_decr = mpc85xx_calibrate_decr;
#if defined(CONFIG_SERIAL_8250) && defined(CONFIG_SERIAL_TEXT_DEBUG)
ppc_md.progress = gen550_progress;
#endif /* CONFIG_SERIAL_8250 && CONFIG_SERIAL_TEXT_DEBUG */
#if defined(CONFIG_SERIAL_8250) && defined(CONFIG_KGDB)
ppc_md.early_serial_map = mpc85xx_early_serial_map;
#endif /* CONFIG_SERIAL_8250 && CONFIG_KGDB */
if (ppc_md.progress)
ppc_md.progress("mpc8540ads_init(): exit", 0);
return;
}
