// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright ( C ) 2009 Extreme Engineering Solutions , Inc .
*
* X - ES board - specific functionality
*
* Based on mpc85xx_ds code from Freescale Semiconductor , Inc .
*
* Author : Nate Case < ncase @ xes - inc . com >
*/
#include <linux/stddef.h>
#include <linux/kernel.h>
#include <linux/pci.h>
#include <linux/kdev_t.h>
#include <linux/delay.h>
#include <linux/seq_file.h>
#include <linux/interrupt.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <asm /time.h>
#include <asm /machdep.h>
#include <asm /pci-bridge.h>
#include <mm/mmu_decl.h>
#include <asm /udbg.h>
#include <asm /mpic.h>
#include <sysdev/fsl_soc.h>
#include <sysdev/fsl_pci.h>
#include "smp.h"
#include "mpc85xx.h"
/* A few bit definitions needed for fixups on some boards */
#define MPC85xx_L2CTL_L2E 0 x80000000 /* L2 enable */
#define MPC85xx_L2CTL_L2I 0 x40000000 /* L2 flash invalidate */
#define MPC85xx_L2CTL_L2SIZ_MASK 0 x30000000 /* L2 SRAM size (R/O) */
static void __init xes_mpc85xx_pic_init(void )
{
struct mpic *mpic = mpic_alloc(NULL, 0 , MPIC_BIG_ENDIAN,
0 , 256 , " OpenPIC " );
BUG_ON(mpic == NULL);
mpic_init(mpic);
}
static void __init xes_mpc85xx_configure_l2(void __iomem *l2_base)
{
volatile uint32_t ctl, tmp;
asm volatile ("msync; isync" );
tmp = in_be32(l2_base);
/*
* xMon may have enabled part of L2 as SRAM , so we need to set it
* up for all cache mode just to be safe .
*/
printk(KERN_INFO "xes_mpc85xx: Enabling L2 as cache\n" );
ctl = MPC85xx_L2CTL_L2E | MPC85xx_L2CTL_L2I;
if (of_machine_is_compatible("MPC8540" ) ||
of_machine_is_compatible("MPC8560" ))
/*
* Assume L2 SRAM is used fully for cache , so set
* L2BLKSZ ( bits 4 : 5 ) to match L2SIZ ( bits 2 : 3 ) .
*/
ctl |= (tmp & MPC85xx_L2CTL_L2SIZ_MASK) >> 2 ;
asm volatile ("msync; isync" );
out_be32(l2_base, ctl);
asm volatile ("msync; isync" );
}
static void __init xes_mpc85xx_fixups(void )
{
struct device_node *np;
int err;
/*
* Legacy xMon firmware on some X - ES boards does not enable L2
* as cache . We must ensure that they get enabled here .
*/
for_each_node_by_name(np, "l2-cache-controller" ) {
struct resource r[2 ];
void __iomem *l2_base;
/* Only MPC8548, MPC8540, and MPC8560 boards are affected */
if (!of_device_is_compatible(np,
"fsl,mpc8548-l2-cache-controller" ) &&
!of_device_is_compatible(np,
"fsl,mpc8540-l2-cache-controller" ) &&
!of_device_is_compatible(np,
"fsl,mpc8560-l2-cache-controller" ))
continue ;
err = of_address_to_resource(np, 0 , &r[0 ]);
if (err) {
printk(KERN_WARNING "xes_mpc85xx: Could not get "
"resource for device tree node '%pOF'" ,
np);
continue ;
}
l2_base = ioremap(r[0 ].start, resource_size(&r[0 ]));
xes_mpc85xx_configure_l2(l2_base);
}
}
/*
* Setup the architecture
*/
static void __init xes_mpc85xx_setup_arch(void )
{
struct device_node *root;
const char *model = "Unknown" ;
root = of_find_node_by_path("/" );
if (root == NULL)
return ;
model = of_get_property(root, "model" , NULL);
printk(KERN_INFO "X-ES MPC85xx-based single-board computer: %s\n" ,
model + strlen("xes," ));
xes_mpc85xx_fixups();
mpc85xx_smp_init();
fsl_pci_assign_primary();
}
machine_arch_initcall(xes_mpc8572, mpc85xx_common_publish_devices);
machine_arch_initcall(xes_mpc8548, mpc85xx_common_publish_devices);
machine_arch_initcall(xes_mpc8540, mpc85xx_common_publish_devices);
define_machine(xes_mpc8572) {
.name = "X-ES MPC8572" ,
.compatible = "xes,MPC8572" ,
.setup_arch = xes_mpc85xx_setup_arch,
.init_IRQ = xes_mpc85xx_pic_init,
#ifdef CONFIG_PCI
.pcibios_fixup_bus = fsl_pcibios_fixup_bus,
.pcibios_fixup_phb = fsl_pcibios_fixup_phb,
#endif
.get_irq = mpic_get_irq,
.progress = udbg_progress,
};
define_machine(xes_mpc8548) {
.name = "X-ES MPC8548" ,
.compatible = "xes,MPC8548" ,
.setup_arch = xes_mpc85xx_setup_arch,
.init_IRQ = xes_mpc85xx_pic_init,
#ifdef CONFIG_PCI
.pcibios_fixup_bus = fsl_pcibios_fixup_bus,
.pcibios_fixup_phb = fsl_pcibios_fixup_phb,
#endif
.get_irq = mpic_get_irq,
.progress = udbg_progress,
};
define_machine(xes_mpc8540) {
.name = "X-ES MPC8540" ,
.compatible = "xes,MPC8540" ,
.setup_arch = xes_mpc85xx_setup_arch,
.init_IRQ = xes_mpc85xx_pic_init,
#ifdef CONFIG_PCI
.pcibios_fixup_bus = fsl_pcibios_fixup_bus,
.pcibios_fixup_phb = fsl_pcibios_fixup_phb,
#endif
.get_irq = mpic_get_irq,
.progress = udbg_progress,
};
Messung V0.5 in Prozent C=94 H=59 G=78
¤ Dauer der Verarbeitung: 0.11 Sekunden
(vorverarbeitet am 2026-09-29)
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