218 lines
4.8 KiB
C
218 lines
4.8 KiB
C
/*
|
|
* Based on MPC8560 ADS and arch/ppc tqm85xx ports
|
|
*
|
|
* Maintained by Kumar Gala (see MAINTAINERS for contact information)
|
|
*
|
|
* Copyright 2008 Freescale Semiconductor Inc.
|
|
*
|
|
* Copyright (c) 2005-2006 DENX Software Engineering
|
|
* Stefan Roese <sr@denx.de>
|
|
*
|
|
* Based on original work by
|
|
* Kumar Gala <kumar.gala@freescale.com>
|
|
* Copyright 2004 Freescale Semiconductor Inc.
|
|
*
|
|
* 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/pci.h>
|
|
#include <linux/kdev_t.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/seq_file.h>
|
|
#include <linux/of_platform.h>
|
|
|
|
#include <asm/system.h>
|
|
#include <asm/time.h>
|
|
#include <asm/machdep.h>
|
|
#include <asm/pci-bridge.h>
|
|
#include <asm/mpic.h>
|
|
#include <asm/prom.h>
|
|
#include <mm/mmu_decl.h>
|
|
#include <asm/udbg.h>
|
|
|
|
#include <sysdev/fsl_soc.h>
|
|
#include <sysdev/fsl_pci.h>
|
|
|
|
#ifdef CONFIG_CPM2
|
|
#include <asm/cpm2.h>
|
|
#include <sysdev/cpm2_pic.h>
|
|
|
|
static void cpm2_cascade(unsigned int irq, struct irq_desc *desc)
|
|
{
|
|
struct irq_chip *chip = irq_desc_get_chip(desc);
|
|
int cascade_irq;
|
|
|
|
while ((cascade_irq = cpm2_get_irq()) >= 0)
|
|
generic_handle_irq(cascade_irq);
|
|
|
|
chip->irq_eoi(&desc->irq_data);
|
|
}
|
|
#endif /* CONFIG_CPM2 */
|
|
|
|
static void __init tqm85xx_pic_init(void)
|
|
{
|
|
struct mpic *mpic;
|
|
struct resource r;
|
|
struct device_node *np;
|
|
#ifdef CONFIG_CPM2
|
|
int irq;
|
|
#endif
|
|
|
|
np = of_find_node_by_type(NULL, "open-pic");
|
|
if (!np) {
|
|
printk(KERN_ERR "Could not find open-pic node\n");
|
|
return;
|
|
}
|
|
|
|
if (of_address_to_resource(np, 0, &r)) {
|
|
printk(KERN_ERR "Could not map mpic register space\n");
|
|
of_node_put(np);
|
|
return;
|
|
}
|
|
|
|
mpic = mpic_alloc(np, r.start,
|
|
MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN,
|
|
0, 256, " OpenPIC ");
|
|
BUG_ON(mpic == NULL);
|
|
of_node_put(np);
|
|
|
|
mpic_init(mpic);
|
|
|
|
#ifdef CONFIG_CPM2
|
|
/* Setup CPM2 PIC */
|
|
np = of_find_compatible_node(NULL, NULL, "fsl,cpm2-pic");
|
|
if (np == NULL) {
|
|
printk(KERN_ERR "PIC init: can not find fsl,cpm2-pic node\n");
|
|
return;
|
|
}
|
|
irq = irq_of_parse_and_map(np, 0);
|
|
|
|
if (irq == NO_IRQ) {
|
|
of_node_put(np);
|
|
printk(KERN_ERR "PIC init: got no IRQ for cpm cascade\n");
|
|
return;
|
|
}
|
|
|
|
cpm2_pic_init(np);
|
|
of_node_put(np);
|
|
irq_set_chained_handler(irq, cpm2_cascade);
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
* Setup the architecture
|
|
*/
|
|
static void __init tqm85xx_setup_arch(void)
|
|
{
|
|
#ifdef CONFIG_PCI
|
|
struct device_node *np;
|
|
#endif
|
|
|
|
if (ppc_md.progress)
|
|
ppc_md.progress("tqm85xx_setup_arch()", 0);
|
|
|
|
#ifdef CONFIG_CPM2
|
|
cpm2_reset();
|
|
#endif
|
|
|
|
#ifdef CONFIG_PCI
|
|
for_each_node_by_type(np, "pci") {
|
|
if (of_device_is_compatible(np, "fsl,mpc8540-pci") ||
|
|
of_device_is_compatible(np, "fsl,mpc8548-pcie")) {
|
|
struct resource rsrc;
|
|
if (!of_address_to_resource(np, 0, &rsrc)) {
|
|
if ((rsrc.start & 0xfffff) == 0x8000)
|
|
fsl_add_bridge(np, 1);
|
|
else
|
|
fsl_add_bridge(np, 0);
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
|
|
static void tqm85xx_show_cpuinfo(struct seq_file *m)
|
|
{
|
|
uint pvid, svid, phid1;
|
|
|
|
pvid = mfspr(SPRN_PVR);
|
|
svid = mfspr(SPRN_SVR);
|
|
|
|
seq_printf(m, "Vendor\t\t: TQ Components\n");
|
|
seq_printf(m, "PVR\t\t: 0x%x\n", pvid);
|
|
seq_printf(m, "SVR\t\t: 0x%x\n", svid);
|
|
|
|
/* Display cpu Pll setting */
|
|
phid1 = mfspr(SPRN_HID1);
|
|
seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f));
|
|
}
|
|
|
|
static void __init tqm85xx_ti1520_fixup(struct pci_dev *pdev)
|
|
{
|
|
unsigned int val;
|
|
|
|
/* Do not do the fixup on other platforms! */
|
|
if (!machine_is(tqm85xx))
|
|
return;
|
|
|
|
dev_info(&pdev->dev, "Using TI 1520 fixup on TQM85xx\n");
|
|
|
|
/*
|
|
* Enable P2CCLK bit in system control register
|
|
* to enable CLOCK output to power chip
|
|
*/
|
|
pci_read_config_dword(pdev, 0x80, &val);
|
|
pci_write_config_dword(pdev, 0x80, val | (1 << 27));
|
|
|
|
}
|
|
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1520,
|
|
tqm85xx_ti1520_fixup);
|
|
|
|
static struct of_device_id __initdata of_bus_ids[] = {
|
|
{ .compatible = "simple-bus", },
|
|
{ .compatible = "gianfar", },
|
|
{},
|
|
};
|
|
|
|
static int __init declare_of_platform_devices(void)
|
|
{
|
|
of_platform_bus_probe(NULL, of_bus_ids, NULL);
|
|
|
|
return 0;
|
|
}
|
|
machine_device_initcall(tqm85xx, declare_of_platform_devices);
|
|
|
|
static const char *board[] __initdata = {
|
|
"tqc,tqm8540",
|
|
"tqc,tqm8541",
|
|
"tqc,tqm8548",
|
|
"tqc,tqm8555",
|
|
"tqc,tqm8560",
|
|
NULL
|
|
};
|
|
|
|
/*
|
|
* Called very early, device-tree isn't unflattened
|
|
*/
|
|
static int __init tqm85xx_probe(void)
|
|
{
|
|
return of_flat_dt_match(of_get_flat_dt_root(), board);
|
|
}
|
|
|
|
define_machine(tqm85xx) {
|
|
.name = "TQM85xx",
|
|
.probe = tqm85xx_probe,
|
|
.setup_arch = tqm85xx_setup_arch,
|
|
.init_IRQ = tqm85xx_pic_init,
|
|
.show_cpuinfo = tqm85xx_show_cpuinfo,
|
|
.get_irq = mpic_get_irq,
|
|
.restart = fsl_rstcr_restart,
|
|
.calibrate_decr = generic_calibrate_decr,
|
|
.progress = udbg_progress,
|
|
};
|