mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-29 13:53:33 +00:00
187 lines
4.7 KiB
C
187 lines
4.7 KiB
C
/*
|
|
* 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>
|
|
|
|
|
|
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 )
|
|
*/
|
|
|
|
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;
|
|
}
|
|
|
|
static void __init
|
|
lite5200_setup_cpu(void)
|
|
{
|
|
struct mpc52xx_intr *intr;
|
|
|
|
u32 intr_ctrl;
|
|
|
|
/* Map zones */
|
|
intr = (struct mpc52xx_intr *)
|
|
ioremap(MPC52xx_INTR,sizeof(struct mpc52xx_intr));
|
|
|
|
if (!intr) {
|
|
printk("lite5200.c: Error while mapping INTR during lite5200_setup_cpu\n");
|
|
goto unmap_regs;
|
|
}
|
|
|
|
/* 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 (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();
|
|
}
|
|
|
|
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 AFAIK */
|
|
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;
|
|
|
|
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
|
|
}
|
|
|