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/*
* MPC86xx HPCN board specific routines
*
* Recode: ZHANG WEI <wei.zhang@freescale.com>
* Initial author: Xianghua Xiao <x.xiao@freescale.com>
*
* Copyright 2006 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/config.h>
#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/mpc86xx.h>
#include <asm/prom.h>
#include <mm/mmu_decl.h>
#include <asm/udbg.h>
#include <asm/i8259.h>
#include <asm/mpic.h>
#include <sysdev/fsl_soc.h>
#include "mpc86xx.h"
#ifndef CONFIG_PCI
unsigned long isa_io_base = 0;
unsigned long isa_mem_base = 0;
unsigned long pci_dram_offset = 0;
#endif
/*
* Internal interrupts are all Level Sensitive, and Positive Polarity
*/
static u_char mpc86xx_hpcn_openpic_initsenses[] __initdata = {
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 0: Reserved */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 1: MCM */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 2: DDR DRAM */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 3: LBIU */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 4: DMA 0 */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 5: DMA 1 */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 6: DMA 2 */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 7: DMA 3 */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 8: PCIE1 */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 9: PCIE2 */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 10: Reserved */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 11: Reserved */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 12: DUART2 */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 13: TSEC 1 Transmit */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 14: TSEC 1 Receive */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 15: TSEC 3 transmit */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 16: TSEC 3 receive */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 17: TSEC 3 error */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 18: TSEC 1 Receive/Transmit Error */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 19: TSEC 2 Transmit */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 20: TSEC 2 Receive */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 21: TSEC 4 transmit */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 22: TSEC 4 receive */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 23: TSEC 4 error */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 24: TSEC 2 Receive/Transmit Error */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 25: Unused */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 26: DUART1 */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 27: I2C */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 28: Performance Monitor */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 29: Unused */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 30: Unused */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 31: Unused */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 32: SRIO error/write-port unit */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 33: SRIO outbound doorbell */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 34: SRIO inbound doorbell */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 35: Unused */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 36: Unused */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 37: SRIO outbound message unit 1 */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 38: SRIO inbound message unit 1 */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 39: SRIO outbound message unit 2 */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 40: SRIO inbound message unit 2 */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 41: Unused */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 42: Unused */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 43: Unused */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 44: Unused */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 45: Unused */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 46: Unused */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 47: Unused */
0x0, /* External 0: */
0x0, /* External 1: */
0x0, /* External 2: */
0x0, /* External 3: */
0x0, /* External 4: */
0x0, /* External 5: */
0x0, /* External 6: */
0x0, /* External 7: */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* External 8: Pixis FPGA */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* External 9: ULI 8259 INTR Cascade */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* External 10: Quad ETH PHY */
0x0, /* External 11: */
0x0,
0x0,
0x0,
0x0,
};
void __init
mpc86xx_hpcn_init_irq(void)
{
struct mpic *mpic1;
phys_addr_t openpic_paddr;
/* Determine the Physical Address of the OpenPIC regs */
openpic_paddr = get_immrbase() + MPC86xx_OPENPIC_OFFSET;
/* Alloc mpic structure and per isu has 16 INT entries. */
mpic1 = mpic_alloc(openpic_paddr,
MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN,
16, MPC86xx_OPENPIC_IRQ_OFFSET, 0, 250,
mpc86xx_hpcn_openpic_initsenses,
sizeof(mpc86xx_hpcn_openpic_initsenses),
" MPIC ");
BUG_ON(mpic1 == NULL);
/* 48 Internal Interrupts */
mpic_assign_isu(mpic1, 0, openpic_paddr + 0x10200);
mpic_assign_isu(mpic1, 1, openpic_paddr + 0x10400);
mpic_assign_isu(mpic1, 2, openpic_paddr + 0x10600);
/* 16 External interrupts */
mpic_assign_isu(mpic1, 3, openpic_paddr + 0x10000);
mpic_init(mpic1);
#ifdef CONFIG_PCI
mpic_setup_cascade(MPC86xx_IRQ_EXT9, i8259_irq_cascade, NULL);
i8259_init(0, I8259_OFFSET);
#endif
}
#ifdef CONFIG_PCI
/*
* interrupt routing
*/
int
mpc86xx_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
{
static char pci_irq_table[][4] = {
/*
* PCI IDSEL/INTPIN->INTLINE
* A B C D
*/
{PIRQA, PIRQB, PIRQC, PIRQD}, /* IDSEL 17 -- PCI Slot 1 */
{PIRQB, PIRQC, PIRQD, PIRQA}, /* IDSEL 18 -- PCI Slot 2 */
{0, 0, 0, 0}, /* IDSEL 19 */
{0, 0, 0, 0}, /* IDSEL 20 */
{0, 0, 0, 0}, /* IDSEL 21 */
{0, 0, 0, 0}, /* IDSEL 22 */
{0, 0, 0, 0}, /* IDSEL 23 */
{0, 0, 0, 0}, /* IDSEL 24 */
{0, 0, 0, 0}, /* IDSEL 25 */
{PIRQD, PIRQA, PIRQB, PIRQC}, /* IDSEL 26 -- PCI Bridge*/
{PIRQC, 0, 0, 0}, /* IDSEL 27 -- LAN */
{PIRQE, PIRQF, PIRQH, PIRQ7}, /* IDSEL 28 -- USB 1.1 */
{PIRQE, PIRQF, PIRQG, 0}, /* IDSEL 29 -- Audio & Modem */
{PIRQH, 0, 0, 0}, /* IDSEL 30 -- LPC & PMU*/
{PIRQD, 0, 0, 0}, /* IDSEL 31 -- ATA */
};
const long min_idsel = 17, max_idsel = 31, irqs_per_slot = 4;
return PCI_IRQ_TABLE_LOOKUP + I8259_OFFSET;
}
int
mpc86xx_exclude_device(u_char bus, u_char devfn)
{
#if !defined(CONFIG_PCI)
if (bus == 0 && PCI_SLOT(devfn) == 0)
return PCIBIOS_DEVICE_NOT_FOUND;
#endif
return PCIBIOS_SUCCESSFUL;
}
#endif /* CONFIG_PCI */
static void __init
mpc86xx_hpcn_setup_arch(void)
{
struct device_node *np;
if (ppc_md.progress)
ppc_md.progress("mpc86xx_hpcn_setup_arch()", 0);
np = of_find_node_by_type(NULL, "cpu");
if (np != 0) {
unsigned int *fp;
fp = (int *)get_property(np, "clock-frequency", NULL);
if (fp != 0)
loops_per_jiffy = *fp / HZ;
else
loops_per_jiffy = 50000000 / HZ;
of_node_put(np);
}
#ifdef CONFIG_PCI
for (np = NULL; (np = of_find_node_by_type(np, "pci")) != NULL;)
add_bridge(np);
ppc_md.pci_swizzle = common_swizzle;
ppc_md.pci_map_irq = mpc86xx_map_irq;
ppc_md.pci_exclude_device = mpc86xx_exclude_device;
#endif
printk("MPC86xx HPCN board from Freescale Semiconductor\n");
#ifdef CONFIG_ROOT_NFS
ROOT_DEV = Root_NFS;
#else
ROOT_DEV = Root_HDA1;
#endif
#ifdef CONFIG_SMP
mpc86xx_smp_init();
#endif
}
void
mpc86xx_hpcn_show_cpuinfo(struct seq_file *m)
{
struct device_node *root;
uint memsize = total_memory;
const char *model = "";
uint svid = mfspr(SPRN_SVR);
seq_printf(m, "Vendor\t\t: Freescale Semiconductor\n");
root = of_find_node_by_path("/");
if (root)
model = get_property(root, "model", NULL);
seq_printf(m, "Machine\t\t: %s\n", model);
of_node_put(root);
seq_printf(m, "SVR\t\t: 0x%x\n", svid);
seq_printf(m, "Memory\t\t: %d MB\n", memsize / (1024 * 1024));
}
/*
* Called very early, device-tree isn't unflattened
*/
static int __init mpc86xx_hpcn_probe(void)
{
unsigned long root = of_get_flat_dt_root();
if (of_flat_dt_is_compatible(root, "mpc86xx"))
return 1; /* Looks good */
return 0;
}
void
mpc86xx_restart(char *cmd)
{
void __iomem *rstcr;
rstcr = ioremap(get_immrbase() + MPC86XX_RSTCR_OFFSET, 0x100);
local_irq_disable();
/* Assert reset request to Reset Control Register */
out_be32(rstcr, 0x2);
/* not reached */
}
long __init
mpc86xx_time_init(void)
{
unsigned int temp;
/* Set the time base to zero */
mtspr(SPRN_TBWL, 0);
mtspr(SPRN_TBWU, 0);
temp = mfspr(SPRN_HID0);
temp |= HID0_TBEN;
mtspr(SPRN_HID0, temp);
asm volatile("isync");
return 0;
}
define_machine(mpc86xx_hpcn) {
.name = "MPC86xx HPCN",
.probe = mpc86xx_hpcn_probe,
.setup_arch = mpc86xx_hpcn_setup_arch,
.init_IRQ = mpc86xx_hpcn_init_irq,
.show_cpuinfo = mpc86xx_hpcn_show_cpuinfo,
.get_irq = mpic_get_irq,
.restart = mpc86xx_restart,
.time_init = mpc86xx_time_init,
.calibrate_decr = generic_calibrate_decr,
.progress = udbg_progress,
};
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