// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Corenet based SoC DS Setup
*
* Maintained by Kumar Gala ( see MAINTAINERS for contact information )
*
* Copyright 2009 - 2011 Freescale Semiconductor Inc .
*/
#include <linux/kernel.h>
#include <linux/pci.h>
#include <linux/kdev_t.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/pgtable.h>
#include <asm /time.h>
#include <asm /machdep.h>
#include <asm /pci-bridge.h>
#include <asm /ppc-pci.h>
#include <mm/mmu_decl.h>
#include <asm /udbg.h>
#include <asm /mpic.h>
#include <asm /ehv_pic.h>
#include <asm /swiotlb.h>
#include <linux/of_platform.h>
#include <sysdev/fsl_soc.h>
#include <sysdev/fsl_pci.h>
#include "smp.h"
#include "mpc85xx.h"
static void __init corenet_gen_pic_init(void )
{
struct mpic *mpic;
unsigned int flags = MPIC_BIG_ENDIAN | MPIC_SINGLE_DEST_CPU |
MPIC_NO_RESET;
if (!IS_ENABLED(CONFIG_HOTPLUG_CPU) && !IS_ENABLED(CONFIG_KEXEC_CORE))
flags |= MPIC_ENABLE_COREINT;
mpic = mpic_alloc(NULL, 0 , flags, 0 , 512 , " OpenPIC " );
BUG_ON(mpic == NULL);
mpic_init(mpic);
}
/*
* Setup the architecture
*/
static void __init corenet_gen_setup_arch(void )
{
mpc85xx_smp_init();
swiotlb_detect_4g();
pr_info("%s board\n" , ppc_md.name);
}
static const struct of_device_id of_device_ids[] = {
{
.compatible = "simple-bus"
},
{
.compatible = "mdio-mux-gpio"
},
{
.compatible = "fsl,fpga-ngpixis"
},
{
.compatible = "fsl,fpga-qixis"
},
{
.compatible = "fsl,srio" ,
},
{
.compatible = "fsl,p4080-pcie" ,
},
{
.compatible = "fsl,qoriq-pcie-v2.2" ,
},
{
.compatible = "fsl,qoriq-pcie-v2.3" ,
},
{
.compatible = "fsl,qoriq-pcie-v2.4" ,
},
{
.compatible = "fsl,qoriq-pcie-v3.0" ,
},
{
.compatible = "fsl,qe" ,
},
/* The following two are for the Freescale hypervisor */
{
.name = "hypervisor" ,
},
{
.name = "handles" ,
},
{}
};
static int __init corenet_gen_publish_devices(void )
{
return of_platform_bus_probe(NULL, of_device_ids, NULL);
}
machine_arch_initcall(corenet_generic, corenet_gen_publish_devices);
static const char * const boards[] __initconst = {
"fsl,P2041RDB" ,
"fsl,P3041DS" ,
"fsl,OCA4080" ,
"fsl,P4080DS" ,
"fsl,P5020DS" ,
"fsl,P5040DS" ,
"fsl,T2080QDS" ,
"fsl,T2080RDB" ,
"fsl,T2081QDS" ,
"fsl,T4240QDS" ,
"fsl,T4240RDB" ,
"fsl,B4860QDS" ,
"fsl,B4420QDS" ,
"fsl,B4220QDS" ,
"fsl,T1023RDB" ,
"fsl,T1024QDS" ,
"fsl,T1024RDB" ,
"fsl,T1040D4RDB" ,
"fsl,T1042D4RDB" ,
"fsl,T1040QDS" ,
"fsl,T1042QDS" ,
"fsl,T1040RDB" ,
"fsl,T1042RDB" ,
"fsl,T1042RDB_PI" ,
"keymile,kmcent2" ,
"keymile,kmcoge4" ,
"varisys,CYRUS" ,
NULL
};
/*
* Called very early , device - tree isn ' t unflattened
*/
static int __init corenet_generic_probe(void )
{
char hv_compat[24 ];
int i;
#ifdef CONFIG_SMP
extern struct smp_ops_t smp_85xx_ops;
#endif
if (of_machine_compatible_match(boards))
return 1 ;
/* Check if we're running under the Freescale hypervisor */
for (i = 0 ; boards[i]; i++) {
snprintf(hv_compat, sizeof (hv_compat), "%s-hv" , boards[i]);
if (of_machine_is_compatible(hv_compat)) {
ppc_md.init_IRQ = ehv_pic_init;
ppc_md.get_irq = ehv_pic_get_irq;
ppc_md.restart = fsl_hv_restart;
pm_power_off = fsl_hv_halt;
ppc_md.halt = fsl_hv_halt;
#ifdef CONFIG_SMP
/*
* Disable the timebase sync operations because we
* can ' t write to the timebase registers under the
* hypervisor .
*/
smp_85xx_ops.give_timebase = NULL;
smp_85xx_ops.take_timebase = NULL;
#endif
return 1 ;
}
}
return 0 ;
}
define_machine(corenet_generic) {
.name = "CoreNet Generic" ,
.probe = corenet_generic_probe,
.setup_arch = corenet_gen_setup_arch,
.init_IRQ = corenet_gen_pic_init,
#ifdef CONFIG_PCI
.pcibios_fixup_bus = fsl_pcibios_fixup_bus,
.pcibios_fixup_phb = fsl_pcibios_fixup_phb,
#endif
/*
* Core reset may cause issues if using the proxy mode of MPIC .
* So , use the mixed mode of MPIC if enabling CPU hotplug .
*
* Likewise , problems have been seen with kexec when coreint is enabled .
*/
#if defined (CONFIG_HOTPLUG_CPU) || defined (CONFIG_KEXEC_CORE)
.get_irq = mpic_get_irq,
#else
.get_irq = mpic_get_coreint_irq,
#endif
.progress = udbg_progress,
.power_save = e500_idle,
};
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