提交 c5d56332 编写于 作者: Z Zang Roy-r61911 提交者: Paul Mackerras

[POWERPC] Add general support for mpc7448hpc2 (Taiga) platform

Add support for Freescale mpc7448 (Taiga) board support
Signed-off-by: NRoy Zang  <tie-fei.zang@freescale.com>
Signed-off-by: NPaul Mackerras <paulus@samba.org>
上级 1729dc78
......@@ -336,7 +336,7 @@ config PPC_ISERIES
config EMBEDDED6xx
bool "Embedded 6xx/7xx/7xxx-based board"
depends on PPC32 && BROKEN
depends on PPC32 && (BROKEN||BROKEN_ON_SMP)
config APUS
bool "Amiga-APUS"
......@@ -436,7 +436,8 @@ config U3_DART
default n
config MPIC
depends on PPC_PSERIES || PPC_PMAC || PPC_MAPLE || PPC_CHRP
depends on PPC_PSERIES || PPC_PMAC || PPC_MAPLE || PPC_CHRP \
|| MPC7448HPC2
bool
default y
......@@ -821,7 +822,8 @@ config MCA
bool
config PCI
bool "PCI support" if 40x || CPM2 || PPC_83xx || PPC_85xx || PPC_86xx || PPC_MPC52xx || (EMBEDDED && PPC_ISERIES)
bool "PCI support" if 40x || CPM2 || PPC_83xx || PPC_85xx || PPC_MPC52xx || (EMBEDDED && PPC_ISERIES) \
|| MPC7448HPC2
default y if !40x && !CPM2 && !8xx && !APUS && !PPC_83xx && !PPC_85xx && !PPC_86xx
default PCI_PERMEDIA if !4xx && !CPM2 && !8xx && APUS
default PCI_QSPAN if !4xx && !CPM2 && 8xx
......
......@@ -302,6 +302,17 @@ void __init find_legacy_serial_ports(void)
of_node_put(isa);
}
/* First fill our array with tsi-bridge ports */
for (np = NULL; (np = of_find_compatible_node(np, "serial", "ns16550")) != NULL;) {
struct device_node *tsi = of_get_parent(np);
if (tsi && !strcmp(tsi->type, "tsi-bridge")) {
index = add_legacy_soc_port(np, np);
if (index >= 0 && np == stdout)
legacy_serial_console = index;
}
of_node_put(tsi);
}
#ifdef CONFIG_PCI
/* Next, try to locate PCI ports */
for (np = NULL; (np = of_find_all_nodes(np));) {
......
......@@ -14,3 +14,4 @@ obj-$(CONFIG_PPC_PSERIES) += pseries/
obj-$(CONFIG_PPC_ISERIES) += iseries/
obj-$(CONFIG_PPC_MAPLE) += maple/
obj-$(CONFIG_PPC_CELL) += cell/
obj-$(CONFIG_EMBEDDED6xx) += embedded6xx/
......@@ -74,6 +74,16 @@ config SANDPOINT
Select SANDPOINT if configuring for a Motorola Sandpoint X3
(any flavor).
config MPC7448HPC2
bool "Freescale MPC7448HPC2(Taiga)"
select TSI108_BRIDGE
select DEFAULT_UIMAGE
select PPC_UDBG_16550
select MPIC
help
Select MPC7448HPC2 if configuring for Freescale MPC7448HPC2 (Taiga)
platform
config RADSTONE_PPC7D
bool "Radstone Technology PPC7D board"
select PPC_I8259
......@@ -221,6 +231,11 @@ config MV64X60
select PPC_INDIRECT_PCI
default y
config TSI108_BRIDGE
bool
depends on MPC7448HPC2
default y
menu "Set bridge options"
depends on MV64X60
......
#
# Makefile for the 6xx/7xx/7xxxx linux kernel.
#
obj-$(CONFIG_MPC7448HPC2) += mpc7448_hpc2.o
/*
* mpc7448_hpc2.c
*
* Board setup routines for the Freescale Taiga platform
*
* Author: Jacob Pan
* jacob.pan@freescale.com
* Author: Xianghua Xiao
* x.xiao@freescale.com
* Maintainer: Roy Zang <tie-fei.zang@freescale.com>
* Add Flat Device Tree support fot mpc7448hpc2 board
*
* Copyright 2004-2006 Freescale Semiconductor, Inc.
*
* This file is licensed under
* the terms of the GNU General Public License version 2. This program
* is licensed "as is" without any warranty of any kind, whether express
* or implied.
*/
#include <linux/config.h>
#include <linux/stddef.h>
#include <linux/kernel.h>
#include <linux/pci.h>
#include <linux/kdev_t.h>
#include <linux/console.h>
#include <linux/delay.h>
#include <linux/irq.h>
#include <linux/ide.h>
#include <linux/seq_file.h>
#include <linux/root_dev.h>
#include <linux/serial.h>
#include <linux/tty.h>
#include <linux/serial_core.h>
#include <asm/system.h>
#include <asm/time.h>
#include <asm/machdep.h>
#include <asm/prom.h>
#include <asm/udbg.h>
#include <asm/tsi108.h>
#include <asm/pci-bridge.h>
#include <asm/reg.h>
#include <mm/mmu_decl.h>
#include "mpc7448_hpc2.h"
#include <asm/tsi108_irq.h>
#include <asm/mpic.h>
#undef DEBUG
#ifdef DEBUG
#define DBG(fmt...) do { printk(fmt); } while(0)
#else
#define DBG(fmt...) do { } while(0)
#endif
#ifndef CONFIG_PCI
isa_io_base = MPC7448_HPC2_ISA_IO_BASE;
isa_mem_base = MPC7448_HPC2_ISA_MEM_BASE;
pci_dram_offset = MPC7448_HPC2_PCI_MEM_OFFSET;
#endif
extern int tsi108_setup_pci(struct device_node *dev);
extern void _nmask_and_or_msr(unsigned long nmask, unsigned long or_val);
extern void tsi108_pci_int_init(void);
extern int tsi108_irq_cascade(struct pt_regs *regs, void *unused);
/*
* Define all of the IRQ senses and polarities. Taken from the
* mpc7448hpc manual.
* Note: Likely, this table and the following function should be
* obtained and derived from the OF Device Tree.
*/
static u_char mpc7448_hpc2_pic_initsenses[] __initdata = {
/* External on-board sources */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* INT[0] XINT0 from FPGA */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* INT[1] XINT1 from FPGA */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* INT[2] PHY_INT from both GIGE */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* INT[3] RESERVED */
/* Internal Tsi108/109 interrupt sources */
(IRQ_SENSE_EDGE | IRQ_POLARITY_POSITIVE), /* Reserved IRQ */
(IRQ_SENSE_EDGE | IRQ_POLARITY_POSITIVE), /* Reserved IRQ */
(IRQ_SENSE_EDGE | IRQ_POLARITY_POSITIVE), /* Reserved IRQ */
(IRQ_SENSE_EDGE | IRQ_POLARITY_POSITIVE), /* Reserved IRQ */
(IRQ_SENSE_EDGE | IRQ_POLARITY_POSITIVE), /* DMA0 */
(IRQ_SENSE_EDGE | IRQ_POLARITY_POSITIVE), /* DMA1 */
(IRQ_SENSE_EDGE | IRQ_POLARITY_POSITIVE), /* DMA2 */
(IRQ_SENSE_EDGE | IRQ_POLARITY_POSITIVE), /* DMA3 */
(IRQ_SENSE_EDGE | IRQ_POLARITY_POSITIVE), /* UART0 */
(IRQ_SENSE_EDGE | IRQ_POLARITY_POSITIVE), /* UART1 */
(IRQ_SENSE_EDGE | IRQ_POLARITY_POSITIVE), /* I2C */
(IRQ_SENSE_EDGE | IRQ_POLARITY_POSITIVE), /* GPIO */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* GIGE0 */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* GIGE1 */
(IRQ_SENSE_EDGE | IRQ_POLARITY_POSITIVE), /* Reserved IRQ */
(IRQ_SENSE_EDGE | IRQ_POLARITY_POSITIVE), /* HLP */
(IRQ_SENSE_EDGE | IRQ_POLARITY_POSITIVE), /* SDC */
(IRQ_SENSE_EDGE | IRQ_POLARITY_POSITIVE), /* Processor IF */
(IRQ_SENSE_EDGE | IRQ_POLARITY_POSITIVE), /* Reserved IRQ */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* PCI/X block */
};
int mpc7448_hpc2_exclude_device(u_char bus, u_char devfn)
{
if (bus == 0 && PCI_SLOT(devfn) == 0)
return PCIBIOS_DEVICE_NOT_FOUND;
else
return PCIBIOS_SUCCESSFUL;
}
/*
* find pci slot by devfn in interrupt map of OF tree
*/
u8 find_slot_by_devfn(unsigned int *interrupt_map, unsigned int devfn)
{
int i;
unsigned int tmp;
for (i = 0; i < 4; i++){
tmp = interrupt_map[i*4*7];
if ((tmp >> 11) == (devfn >> 3))
return i;
}
return i;
}
/*
* Scans the interrupt map for pci device
*/
void mpc7448_hpc2_fixup_irq(struct pci_dev *dev)
{
struct pci_controller *hose;
struct device_node *node;
unsigned int *interrupt;
int busnr;
int len;
u8 slot;
u8 pin;
/* Lookup the hose */
busnr = dev->bus->number;
hose = pci_bus_to_hose(busnr);
if (!hose)
printk(KERN_ERR "No pci hose found\n");
/* Check it has an OF node associated */
node = (struct device_node *) hose->arch_data;
if (!node)
printk(KERN_ERR "No pci node found\n");
interrupt = (unsigned int *) get_property(node, "interrupt-map", &len);
slot = find_slot_by_devfn(interrupt, dev->devfn);
pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin);
if (pin == 0 || pin > 4)
pin = 1;
pin--;
dev->irq = interrupt[slot*4*7 + pin*7 + 5];
DBG("TSI_PCI: dev->irq = 0x%x\n", dev->irq);
}
/* temporary pci irq map fixup*/
void __init mpc7448_hpc2_pcibios_fixup(void)
{
struct pci_dev *dev = NULL;
for_each_pci_dev(dev) {
mpc7448_hpc2_fixup_irq(dev);
pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq);
}
}
static void __init mpc7448_hpc2_setup_arch(void)
{
struct device_node *cpu;
struct device_node *np;
if (ppc_md.progress)
ppc_md.progress("mpc7448_hpc2_setup_arch():set_bridge", 0);
cpu = of_find_node_by_type(NULL, "cpu");
if (cpu != 0) {
unsigned int *fp;
fp = (int *)get_property(cpu, "clock-frequency", NULL);
if (fp != 0)
loops_per_jiffy = *fp / HZ;
else
loops_per_jiffy = 50000000 / HZ;
of_node_put(cpu);
}
tsi108_csr_vir_base = get_vir_csrbase();
#ifdef CONFIG_ROOT_NFS
ROOT_DEV = Root_NFS;
#else
ROOT_DEV = Root_HDA1;
#endif
#ifdef CONFIG_BLK_DEV_INITRD
ROOT_DEV = Root_RAM0;
#endif
/* setup PCI host bridge */
#ifdef CONFIG_PCI
for (np = NULL; (np = of_find_node_by_type(np, "pci")) != NULL;)
tsi108_setup_pci(np);
ppc_md.pci_exclude_device = mpc7448_hpc2_exclude_device;
if (ppc_md.progress)
ppc_md.progress("tsi108: resources set", 0x100);
#endif
printk(KERN_INFO "MPC7448HPC2 (TAIGA) Platform\n");
printk(KERN_INFO
"Jointly ported by Freescale and Tundra Semiconductor\n");
printk(KERN_INFO
"Enabling L2 cache then enabling the HID0 prefetch engine.\n");
}
/*
* Interrupt setup and service. Interrrupts on the mpc7448_hpc2 come
* from the four external INT pins, PCI interrupts are routed via
* PCI interrupt control registers, it generates internal IRQ23
*
* Interrupt routing on the Taiga Board:
* TSI108:PB_INT[0] -> CPU0:INT#
* TSI108:PB_INT[1] -> CPU0:MCP#
* TSI108:PB_INT[2] -> N/C
* TSI108:PB_INT[3] -> N/C
*/
static void __init mpc7448_hpc2_init_IRQ(void)
{
struct mpic *mpic;
phys_addr_t mpic_paddr = 0;
struct device_node *tsi_pic;
tsi_pic = of_find_node_by_type(NULL, "open-pic");
if (tsi_pic) {
unsigned int size;
void *prop = get_property(tsi_pic, "reg", &size);
mpic_paddr = of_translate_address(tsi_pic, prop);
}
if (mpic_paddr == 0) {
printk("%s: No tsi108 PIC found !\n", __FUNCTION__);
return;
}
DBG("%s: tsi108pic phys_addr = 0x%x\n", __FUNCTION__,
(u32) mpic_paddr);
mpic = mpic_alloc(mpic_paddr,
MPIC_PRIMARY | MPIC_BIG_ENDIAN | MPIC_WANTS_RESET |
MPIC_SPV_EOI | MPIC_MOD_ID(MPIC_ID_TSI108),
0, /* num_sources used */
TSI108_IRQ_BASE,
0, /* num_sources used */
NR_IRQS - 4 /* XXXX */,
mpc7448_hpc2_pic_initsenses,
sizeof(mpc7448_hpc2_pic_initsenses), "Tsi108_PIC");
BUG_ON(mpic == NULL); /* XXXX */
mpic_init(mpic);
mpic_setup_cascade(IRQ_TSI108_PCI, tsi108_irq_cascade, mpic);
tsi108_pci_int_init();
/* Configure MPIC outputs to CPU0 */
tsi108_write_reg(TSI108_MPIC_OFFSET + 0x30c, 0);
}
void mpc7448_hpc2_show_cpuinfo(struct seq_file *m)
{
seq_printf(m, "vendor\t\t: Freescale Semiconductor\n");
seq_printf(m, "machine\t\t: MPC7448hpc2\n");
}
void mpc7448_hpc2_restart(char *cmd)
{
local_irq_disable();
/* Set exception prefix high - to the firmware */
_nmask_and_or_msr(0, MSR_IP);
for (;;) ; /* Spin until reset happens */
}
void mpc7448_hpc2_power_off(void)
{
local_irq_disable();
for (;;) ; /* No way to shut power off with software */
}
void mpc7448_hpc2_halt(void)
{
mpc7448_hpc2_power_off();
}
/*
* Called very early, device-tree isn't unflattened
*/
static int __init mpc7448_hpc2_probe(void)
{
unsigned long root = of_get_flat_dt_root();
if (!of_flat_dt_is_compatible(root, "mpc74xx"))
return 0;
return 1;
}
static int mpc7448_machine_check_exception(struct pt_regs *regs)
{
extern void tsi108_clear_pci_cfg_error(void);
const struct exception_table_entry *entry;
/* Are we prepared to handle this fault */
if ((entry = search_exception_tables(regs->nip)) != NULL) {
tsi108_clear_pci_cfg_error();
regs->msr |= MSR_RI;
regs->nip = entry->fixup;
return 1;
}
return 0;
}
define_machine(mpc7448_hpc2){
.name = "MPC7448 HPC2",
.probe = mpc7448_hpc2_probe,
.setup_arch = mpc7448_hpc2_setup_arch,
.init_IRQ = mpc7448_hpc2_init_IRQ,
.show_cpuinfo = mpc7448_hpc2_show_cpuinfo,
.get_irq = mpic_get_irq,
.pcibios_fixup = mpc7448_hpc2_pcibios_fixup,
.restart = mpc7448_hpc2_restart,
.calibrate_decr = generic_calibrate_decr,
.machine_check_exception= mpc7448_machine_check_exception,
.progress = udbg_progress,
};
/*
* mpc7448_hpc2.h
*
* Definitions for Freescale MPC7448_HPC2 platform
*
* Author: Jacob Pan
* jacob.pan@freescale.com
* Maintainer: Roy Zang <roy.zang@freescale.com>
*
* 2006 (c) Freescale Semiconductor, Inc. This file is licensed under
* the terms of the GNU General Public License version 2. This program
* is licensed "as is" without any warranty of any kind, whether express
* or implied.
*/
#ifndef __PPC_PLATFORMS_MPC7448_HPC2_H
#define __PPC_PLATFORMS_MPC7448_HPC2_H
#include <asm/ppcboot.h>
/* Base Addresses for the PCI bus
*/
#define MPC7448_HPC2_PCI_MEM_OFFSET (0x00000000)
#define MPC7448_HPC2_ISA_IO_BASE (0x00000000)
#define MPC7448_HPC2_ISA_MEM_BASE (0x00000000)
#endif /* __PPC_PLATFORMS_MPC7448_HPC2_H */
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