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/*
* arch/ppc/platforms/lite5200.c
*
* Platform support file for the Freescale LITE5200 based on MPC52xx.
* A maximum of this file should be moved to syslib/mpc52xx_?????
* so that new platform based on MPC52xx need a minimal platform file
* ( avoid code duplication )
*
*
* Maintainer : Sylvain Munaut <tnt@246tNt.com>
*
* Based on the 2.4 code written by Kent Borg,
* Dale Farnsworth <dale.farnsworth@mvista.com> and
* Wolfgang Denk <wd@denx.de>
*
* Copyright 2004 Sylvain Munaut <tnt@246tNt.com>
* Copyright 2003 Motorola Inc.
* Copyright 2003 MontaVista Software Inc.
* Copyright 2003 DENX Software Engineering (wd@denx.de)
*
* This file is licensed under the terms of the GNU General Public License
* version 2. This program is licensed "as is" without any warranty of any
* kind, whether express or implied.
*/
#include <linux/config.h>
#include <linux/initrd.h>
#include <linux/seq_file.h>
#include <linux/kdev_t.h>
#include <linux/root_dev.h>
#include <linux/console.h>
#include <asm/bootinfo.h>
#include <asm/io.h>
#include <asm/ocp.h>
#include <asm/mpc52xx.h>
#include <syslib/mpc52xx_pci.h>
extern int powersave_nap;
/* Board data given by U-Boot */
bd_t __res;
EXPORT_SYMBOL(__res); /* For modules */
/* ======================================================================== */
/* OCP device definition */
/* For board/shared resources like PSCs */
/* ======================================================================== */
/* Be sure not to load conficting devices : e.g. loading the UART drivers for
* PSC1 and then also loading a AC97 for this same PSC.
* For details about how to create an entry, look in the doc of the concerned
* driver ( eg drivers/serial/mpc52xx_uart.c for the PSC in uart mode )
*/
static struct ocp_def board_ocp[] = {
{
.vendor = OCP_VENDOR_FREESCALE,
.function = OCP_FUNC_PSC_UART,
.index = 0,
.paddr = MPC52xx_PSC1,
.irq = MPC52xx_PSC1_IRQ,
.pm = OCP_CPM_NA,
},
{ /* Terminating entry */
.vendor = OCP_VENDOR_INVALID
}
};
/* ======================================================================== */
/* Platform specific code */
/* ======================================================================== */
static int
lite5200_show_cpuinfo(struct seq_file *m)
{
seq_printf(m, "machine\t\t: Freescale LITE5200\n");
return 0;
}
#ifdef CONFIG_PCI
static int
lite5200_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
{
return (pin == 1) && (idsel==24) ? MPC52xx_IRQ0 : -1;
}
#endif
static void __init
lite5200_setup_cpu(void)
{
struct mpc52xx_intr __iomem *intr;
struct mpc52xx_xlb __iomem *xlb;
u32 intr_ctrl;
/* Map zones */
xlb = ioremap(MPC52xx_XLB,sizeof(struct mpc52xx_xlb));
intr = ioremap(MPC52xx_INTR,sizeof(struct mpc52xx_intr));
if (!xlb || !intr) {
printk("lite5200.c: Error while mapping XLB/INTR during "
"lite5200_setup_cpu\n");
goto unmap_regs;
}
/* Configure the XLB Arbiter */
out_be32(&xlb->master_pri_enable, 0xff);
out_be32(&xlb->master_priority, 0x11111111);
/* Enable ram snooping for 1GB window */
out_be32(&xlb->config, in_be32(&xlb->config) | MPC52xx_XLB_CFG_SNOOP);
out_be32(&xlb->snoop_window, MPC52xx_PCI_TARGET_MEM | 0x1d);
/* IRQ[0-3] setup : IRQ0 - Level Active Low */
/* IRQ[1-3] - Level Active High */
intr_ctrl = in_be32(&intr->ctrl);
intr_ctrl &= ~0x00ff0000;
intr_ctrl |= 0x00c00000;
out_be32(&intr->ctrl, intr_ctrl);
/* Unmap reg zone */
unmap_regs:
if (xlb) iounmap(xlb);
if (intr) iounmap(intr);
}
static void __init
lite5200_setup_arch(void)
{
/* Add board OCP definitions */
mpc52xx_add_board_devices(board_ocp);
/* CPU & Port mux setup */
lite5200_setup_cpu();
#ifdef CONFIG_PCI
/* PCI Bridge setup */
mpc52xx_find_bridges();
#endif
}
void __init
platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
unsigned long r6, unsigned long r7)
{
/* Generic MPC52xx platform initialization */
/* TODO Create one and move a max of stuff in it.
Put this init in the syslib */
struct bi_record *bootinfo = find_bootinfo();
if (bootinfo)
parse_bootinfo(bootinfo);
else {
/* Load the bd_t board info structure */
if (r3)
memcpy((void*)&__res,(void*)(r3+KERNELBASE),
sizeof(bd_t));
#ifdef CONFIG_BLK_DEV_INITRD
/* Load the initrd */
if (r4) {
initrd_start = r4 + KERNELBASE;
initrd_end = r5 + KERNELBASE;
}
#endif
/* Load the command line */
if (r6) {
*(char *)(r7+KERNELBASE) = 0;
strcpy(cmd_line, (char *)(r6+KERNELBASE));
}
}
/* BAT setup */
mpc52xx_set_bat();
/* No ISA bus by default */
isa_io_base = 0;
isa_mem_base = 0;
/* Powersave */
powersave_nap = 1; /* We allow this platform to NAP */
/* Setup the ppc_md struct */
ppc_md.setup_arch = lite5200_setup_arch;
ppc_md.show_cpuinfo = lite5200_show_cpuinfo;
ppc_md.show_percpuinfo = NULL;
ppc_md.init_IRQ = mpc52xx_init_irq;
ppc_md.get_irq = mpc52xx_get_irq;
#ifdef CONFIG_PCI
ppc_md.pci_map_irq = lite5200_map_irq;
#endif
ppc_md.find_end_of_memory = mpc52xx_find_end_of_memory;
ppc_md.setup_io_mappings = mpc52xx_map_io;
ppc_md.restart = mpc52xx_restart;
ppc_md.power_off = mpc52xx_power_off;
ppc_md.halt = mpc52xx_halt;
/* No time keeper on the LITE5200 */
ppc_md.time_init = NULL;
ppc_md.get_rtc_time = NULL;
ppc_md.set_rtc_time = NULL;
ppc_md.calibrate_decr = mpc52xx_calibrate_decr;
#ifdef CONFIG_SERIAL_TEXT_DEBUG
ppc_md.progress = mpc52xx_progress;
#endif
}
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