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/*
* MPC85xx setup and early boot code plus other random bits.
*
* Maintained by Kumar Gala (see MAINTAINERS for contact information)
*
* Copyright 2005 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/root_dev.h>
#include <asm/system.h>
#include <asm/time.h>
#include <asm/machdep.h>
#include <asm/pci-bridge.h>
#include <asm/mpc85xx.h>
#include <asm/prom.h>
#include <asm/mpic.h>
#include <mm/mmu_decl.h>
#include <asm/udbg.h>
#include <sysdev/fsl_soc.h>
#include "mpc85xx.h"
#ifdef CONFIG_CPM2
#include <linux/fs_enet_pd.h>
#include <asm/cpm2.h>
#include <sysdev/cpm2_pic.h>
#include <asm/fs_pd.h>
#endif
#ifndef CONFIG_PCI
unsigned long isa_io_base = 0;
unsigned long isa_mem_base = 0;
#endif
#ifdef CONFIG_PCI
int
mpc85xx_exclude_device(u_char bus, u_char devfn)
{
if (bus == 0 && PCI_SLOT(devfn) == 0)
return PCIBIOS_DEVICE_NOT_FOUND;
else
return PCIBIOS_SUCCESSFUL;
}
void __init
mpc85xx_pcibios_fixup(void)
{
struct pci_dev *dev = NULL;
for_each_pci_dev(dev)
pci_read_irq_line(dev);
}
#endif /* CONFIG_PCI */
#ifdef CONFIG_CPM2
static void cpm2_cascade(unsigned int irq, struct irq_desc *desc,
struct pt_regs *regs)
{
int cascade_irq;
while ((cascade_irq = cpm2_get_irq(regs)) >= 0) {
generic_handle_irq(cascade_irq, regs);
}
desc->chip->eoi(irq);
}
#endif /* CONFIG_CPM2 */
void __init mpc85xx_ads_pic_init(void)
{
struct mpic *mpic;
struct resource r;
struct device_node *np = NULL;
#ifdef CONFIG_CPM2
int irq;
#endif
np = of_find_node_by_type(np, "open-pic");
if (np == NULL) {
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,
4, 0, " OpenPIC ");
BUG_ON(mpic == NULL);
of_node_put(np);
mpic_assign_isu(mpic, 0, r.start + 0x10200);
mpic_assign_isu(mpic, 1, r.start + 0x10280);
mpic_assign_isu(mpic, 2, r.start + 0x10300);
mpic_assign_isu(mpic, 3, r.start + 0x10380);
mpic_assign_isu(mpic, 4, r.start + 0x10400);
mpic_assign_isu(mpic, 5, r.start + 0x10480);
mpic_assign_isu(mpic, 6, r.start + 0x10500);
mpic_assign_isu(mpic, 7, r.start + 0x10580);
/* Unused on this platform (leave room for 8548) */
mpic_assign_isu(mpic, 8, r.start + 0x10600);
mpic_assign_isu(mpic, 9, r.start + 0x10680);
mpic_assign_isu(mpic, 10, r.start + 0x10700);
mpic_assign_isu(mpic, 11, r.start + 0x10780);
/* External Interrupts */
mpic_assign_isu(mpic, 12, r.start + 0x10000);
mpic_assign_isu(mpic, 13, r.start + 0x10080);
mpic_assign_isu(mpic, 14, r.start + 0x10100);
mpic_init(mpic);
#ifdef CONFIG_CPM2
/* Setup CPM2 PIC */
np = of_find_node_by_type(NULL, "cpm-pic");
if (np == NULL) {
printk(KERN_ERR "PIC init: can not find cpm-pic node\n");
return;
}
irq = irq_of_parse_and_map(np, 0);
cpm2_pic_init(np);
set_irq_chained_handler(irq, cpm2_cascade);
#endif
}
/*
* Setup the architecture
*/
#ifdef CONFIG_CPM2
void init_fcc_ioports(struct fs_platform_info *fpi)
{
struct io_port *io = cpm2_map(im_ioport);
int fcc_no = fs_get_fcc_index(fpi->fs_no);
int target;
u32 tempval;
switch(fcc_no) {
case 1:
tempval = in_be32(&io->iop_pdirb);
tempval &= ~PB2_DIRB0;
tempval |= PB2_DIRB1;
out_be32(&io->iop_pdirb, tempval);
tempval = in_be32(&io->iop_psorb);
tempval &= ~PB2_PSORB0;
tempval |= PB2_PSORB1;
out_be32(&io->iop_psorb, tempval);
tempval = in_be32(&io->iop_pparb);
tempval |= (PB2_DIRB0 | PB2_DIRB1);
out_be32(&io->iop_pparb, tempval);
target = CPM_CLK_FCC2;
break;
case 2:
tempval = in_be32(&io->iop_pdirb);
tempval &= ~PB3_DIRB0;
tempval |= PB3_DIRB1;
out_be32(&io->iop_pdirb, tempval);
tempval = in_be32(&io->iop_psorb);
tempval &= ~PB3_PSORB0;
tempval |= PB3_PSORB1;
out_be32(&io->iop_psorb, tempval);
tempval = in_be32(&io->iop_pparb);
tempval |= (PB3_DIRB0 | PB3_DIRB1);
out_be32(&io->iop_pparb, tempval);
tempval = in_be32(&io->iop_pdirc);
tempval |= PC3_DIRC1;
out_be32(&io->iop_pdirc, tempval);
tempval = in_be32(&io->iop_pparc);
tempval |= PC3_DIRC1;
out_be32(&io->iop_pparc, tempval);
target = CPM_CLK_FCC3;
break;
default:
printk(KERN_ERR "init_fcc_ioports: invalid FCC number\n");
return;
}
/* Port C has clocks...... */
tempval = in_be32(&io->iop_psorc);
tempval &= ~(PC_CLK(fpi->clk_rx - 8) | PC_CLK(fpi->clk_tx - 8));
out_be32(&io->iop_psorc, tempval);
tempval = in_be32(&io->iop_pdirc);
tempval &= ~(PC_CLK(fpi->clk_rx - 8) | PC_CLK(fpi->clk_tx - 8));
out_be32(&io->iop_pdirc, tempval);
tempval = in_be32(&io->iop_pparc);
tempval |= (PC_CLK(fpi->clk_rx - 8) | PC_CLK(fpi->clk_tx - 8));
out_be32(&io->iop_pparc, tempval);
cpm2_unmap(io);
/* Configure Serial Interface clock routing.
* First, clear FCC bits to zero,
* then set the ones we want.
*/
cpm2_clk_setup(target, fpi->clk_rx, CPM_CLK_RX);
cpm2_clk_setup(target, fpi->clk_tx, CPM_CLK_TX);
}
#endif
static void __init mpc85xx_ads_setup_arch(void)
{
struct device_node *cpu;
#ifdef CONFIG_PCI
struct device_node *np;
#endif
if (ppc_md.progress)
ppc_md.progress("mpc85xx_ads_setup_arch()", 0);
cpu = of_find_node_by_type(NULL, "cpu");
if (cpu != 0) {
const unsigned int *fp;
fp = get_property(cpu, "clock-frequency", NULL);
if (fp != 0)
loops_per_jiffy = *fp / HZ;
else
loops_per_jiffy = 50000000 / HZ;
of_node_put(cpu);
}
#ifdef CONFIG_CPM2
cpm2_reset();
#endif
#ifdef CONFIG_PCI
for (np = NULL; (np = of_find_node_by_type(np, "pci")) != NULL;)
add_bridge(np);
ppc_md.pcibios_fixup = mpc85xx_pcibios_fixup;
ppc_md.pci_exclude_device = mpc85xx_exclude_device;
#endif
#ifdef CONFIG_ROOT_NFS
ROOT_DEV = Root_NFS;
#else
ROOT_DEV = Root_HDA1;
#endif
}
void mpc85xx_ads_show_cpuinfo(struct seq_file *m)
{
uint pvid, svid, phid1;
uint memsize = total_memory;
pvid = mfspr(SPRN_PVR);
svid = mfspr(SPRN_SVR);
seq_printf(m, "Vendor\t\t: Freescale Semiconductor\n");
seq_printf(m, "Machine\t\t: mpc85xx\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));
/* Display the amount of memory */
seq_printf(m, "Memory\t\t: %d MB\n", memsize / (1024 * 1024));
}
/*
* Called very early, device-tree isn't unflattened
*/
static int __init mpc85xx_ads_probe(void)
{
/* We always match for now, eventually we should look at the flat
dev tree to ensure this is the board we are suppose to run on
*/
return 1;
}
define_machine(mpc85xx_ads) {
.name = "MPC85xx ADS",
.probe = mpc85xx_ads_probe,
.setup_arch = mpc85xx_ads_setup_arch,
.init_IRQ = mpc85xx_ads_pic_init,
.show_cpuinfo = mpc85xx_ads_show_cpuinfo,
.get_irq = mpic_get_irq,
.restart = mpc85xx_restart,
.calibrate_decr = generic_calibrate_decr,
.progress = udbg_progress,
};
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