170 lines
3.6 KiB
C
Executable file
170 lines
3.6 KiB
C
Executable file
/*
|
|
* misc setup functions for MPC83xx
|
|
*
|
|
* Maintainer: Kumar Gala <galak@kernel.crashing.org>
|
|
*
|
|
* 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/stddef.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/of_platform.h>
|
|
#include <linux/pci.h>
|
|
|
|
#include <asm/debug.h>
|
|
#include <asm/io.h>
|
|
#include <asm/hw_irq.h>
|
|
#include <asm/ipic.h>
|
|
#include <soc/fsl/qe/qe_ic.h>
|
|
#include <sysdev/fsl_soc.h>
|
|
#include <sysdev/fsl_pci.h>
|
|
|
|
#include "mpc83xx.h"
|
|
|
|
static __be32 __iomem *restart_reg_base;
|
|
|
|
static int __init mpc83xx_restart_init(void)
|
|
{
|
|
/* map reset restart_reg_baseister space */
|
|
restart_reg_base = ioremap(get_immrbase() + 0x900, 0xff);
|
|
|
|
return 0;
|
|
}
|
|
|
|
arch_initcall(mpc83xx_restart_init);
|
|
|
|
void __noreturn mpc83xx_restart(char *cmd)
|
|
{
|
|
#define RST_OFFSET 0x00000900
|
|
#define RST_PROT_REG 0x00000018
|
|
#define RST_CTRL_REG 0x0000001c
|
|
|
|
local_irq_disable();
|
|
|
|
if (restart_reg_base) {
|
|
/* enable software reset "RSTE" */
|
|
out_be32(restart_reg_base + (RST_PROT_REG >> 2), 0x52535445);
|
|
|
|
/* set software hard reset */
|
|
out_be32(restart_reg_base + (RST_CTRL_REG >> 2), 0x2);
|
|
} else {
|
|
printk (KERN_EMERG "Error: Restart registers not mapped, spinning!\n");
|
|
}
|
|
|
|
for (;;) ;
|
|
}
|
|
|
|
long __init mpc83xx_time_init(void)
|
|
{
|
|
#define SPCR_OFFSET 0x00000110
|
|
#define SPCR_TBEN 0x00400000
|
|
__be32 __iomem *spcr = ioremap(get_immrbase() + SPCR_OFFSET, 4);
|
|
__be32 tmp;
|
|
|
|
tmp = in_be32(spcr);
|
|
out_be32(spcr, tmp | SPCR_TBEN);
|
|
|
|
iounmap(spcr);
|
|
|
|
return 0;
|
|
}
|
|
|
|
void __init mpc83xx_ipic_init_IRQ(void)
|
|
{
|
|
struct device_node *np;
|
|
|
|
/* looking for fsl,pq2pro-pic which is asl compatible with fsl,ipic */
|
|
np = of_find_compatible_node(NULL, NULL, "fsl,ipic");
|
|
if (!np)
|
|
np = of_find_node_by_type(NULL, "ipic");
|
|
if (!np)
|
|
return;
|
|
|
|
ipic_init(np, 0);
|
|
|
|
of_node_put(np);
|
|
|
|
/* Initialize the default interrupt mapping priorities,
|
|
* in case the boot rom changed something on us.
|
|
*/
|
|
ipic_set_default_priority();
|
|
}
|
|
|
|
#ifdef CONFIG_QUICC_ENGINE
|
|
void __init mpc83xx_qe_init_IRQ(void)
|
|
{
|
|
struct device_node *np;
|
|
|
|
np = of_find_compatible_node(NULL, NULL, "fsl,qe-ic");
|
|
if (!np) {
|
|
np = of_find_node_by_type(NULL, "qeic");
|
|
if (!np)
|
|
return;
|
|
}
|
|
qe_ic_init(np, 0, qe_ic_cascade_low_ipic, qe_ic_cascade_high_ipic);
|
|
of_node_put(np);
|
|
}
|
|
|
|
void __init mpc83xx_ipic_and_qe_init_IRQ(void)
|
|
{
|
|
mpc83xx_ipic_init_IRQ();
|
|
mpc83xx_qe_init_IRQ();
|
|
}
|
|
#endif /* CONFIG_QUICC_ENGINE */
|
|
|
|
static const struct of_device_id of_bus_ids[] __initconst = {
|
|
{ .type = "soc", },
|
|
{ .compatible = "soc", },
|
|
{ .compatible = "simple-bus" },
|
|
{ .compatible = "gianfar" },
|
|
{ .compatible = "gpio-leds", },
|
|
{ .type = "qe", },
|
|
{ .compatible = "fsl,qe", },
|
|
{},
|
|
};
|
|
|
|
int __init mpc83xx_declare_of_platform_devices(void)
|
|
{
|
|
of_platform_bus_probe(NULL, of_bus_ids, NULL);
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_PCI
|
|
void __init mpc83xx_setup_pci(void)
|
|
{
|
|
struct device_node *np;
|
|
|
|
for_each_compatible_node(np, "pci", "fsl,mpc8349-pci")
|
|
mpc83xx_add_bridge(np);
|
|
for_each_compatible_node(np, "pci", "fsl,mpc8314-pcie")
|
|
mpc83xx_add_bridge(np);
|
|
}
|
|
#endif
|
|
|
|
void __init mpc83xx_setup_arch(void)
|
|
{
|
|
if (ppc_md.progress)
|
|
ppc_md.progress("mpc83xx_setup_arch()", 0);
|
|
|
|
mpc83xx_setup_pci();
|
|
}
|
|
|
|
int machine_check_83xx(struct pt_regs *regs)
|
|
{
|
|
u32 mask = 1 << (31 - IPIC_MCP_WDT);
|
|
|
|
if (!(regs->msr & SRR1_MCE_MCP) || !(ipic_get_mcp_status() & mask))
|
|
return machine_check_generic(regs);
|
|
ipic_clear_mcp_status(mask);
|
|
|
|
if (debugger_fault_handler(regs))
|
|
return 1;
|
|
|
|
die("Watchdog NMI Reset", regs, 0);
|
|
|
|
return 1;
|
|
}
|