/*
* arch/ppc/platform/85xx/mpc85xx_cds_common.c
*
* MPC85xx CDS board specific routines
*
* Maintainer: 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/config.h>
#include <linux/stddef.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/errno.h>
#include <linux/reboot.h>
#include <linux/pci.h>
#include <linux/kdev_t.h>
#include <linux/major.h>
#include <linux/console.h>
#include <linux/delay.h>
#include <linux/irq.h>
#include <linux/seq_file.h>
#include <linux/serial.h>
#include <linux/module.h>
#include <linux/root_dev.h>
#include <linux/initrd.h>
#include <linux/tty.h>
#include <linux/serial_core.h>
#include <asm/system.h>
#include <asm/pgtable.h>
#include <asm/page.h>
#include <asm/atomic.h>
#include <asm/time.h>
#include <asm/io.h>
#include <asm/machdep.h>
#include <asm/prom.h>
#include <asm/open_pic.h>
#include <asm/bootinfo.h>
#include <asm/pci-bridge.h>
#include <asm/mpc85xx.h>
#include <asm/irq.h>
#include <asm/immap_85xx.h>
#include <asm/immap_cpm2.h>
#include <asm/ocp.h>
#include <asm/kgdb.h>
#include <mm/mmu_decl.h>
#include <syslib/cpm2_pic.h>
#include <syslib/ppc85xx_common.h>
#include <syslib/ppc85xx_setup.h>
#ifndef CONFIG_PCI
unsigned long isa_io_base = 0;
unsigned long isa_mem_base = 0;
#endif
extern unsigned long total_memory; /* in mm/init */
unsigned char __res[sizeof (bd_t)];
static int cds_pci_slot = 2;
static volatile u8 * cadmus;
/* Internal interrupts are all Level Sensitive, and Positive Polarity */
static u_char mpc85xx_cds_openpic_initsenses[] __initdata = {
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 0: L2 Cache */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 1: ECM */
(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: PCI/PCI-X */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 9: RIO Inbound Port Write Error */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 10: RIO Doorbell Inbound */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 11: RIO Outbound Message */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 12: RIO Inbound Message */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 13: TSEC 0 Transmit */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 14: TSEC 0 Receive */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 15: Unused */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 16: Unused */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 17: Unused */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 18: TSEC 0 Receive/Transmit Error */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 19: TSEC 1 Transmit */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 20: TSEC 1 Receive */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 21: Unused */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 22: Unused */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 23: Unused */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 24: TSEC 1 Receive/Transmit Error */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 25: Fast Ethernet */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 26: DUART */
(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: CPM */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 31: Unused */
#if defined(CONFIG_PCI)
(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* External 0: PCI1 slot */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* External 1: PCI1 slot */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* External 2: PCI1 slot */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* External 3: PCI1 slot */
#else
0x0, /* External 0: */
0x0, /* External 1: */
0x0, /* External 2: */
0x0, /* External 3: */
#endif
0x0, /* External 4: */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* External 5: PHY */
0x0, /* External 6: */
0x0, /* External 7: */
0x0, /* External 8: */
0x0, /* External 9: */
0x0, /* External 10: */
#if defined(CONFIG_85xx_PCI2) && defined(CONFIG_PCI)
(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* External 11: PCI2 slot 0 */
#else
0x0, /* External 11: */
#endif
};
struct ocp_gfar_data mpc85xx_tsec1_def = {
.interruptTransmit = MPC85xx_IRQ_TSEC1_TX,
.interruptError = MPC85xx_IRQ_TSEC1_ERROR,
.interruptReceive = MPC85xx_IRQ_TSEC1_RX,
.interruptPHY = MPC85xx_IRQ_EXT5,
.flags = (GFAR_HAS_GIGABIT | GFAR_HAS_MULTI_INTR |
GFAR_HAS_PHY_INTR),
.phyid = 0,
.phyregidx = 0,
};
struct ocp_gfar_data mpc85xx_tsec2_def = {
.interruptTransmit = MPC85xx_IRQ_TSEC2_TX,
.interruptError = MPC85xx_IRQ_TSEC2_ERROR,
.interruptReceive = MPC85xx_IRQ_TSEC2_RX,
.interruptPHY = MPC85xx_IRQ_EXT5,
.flags = (GFAR_HAS_GIGABIT | GFAR_HAS_MULTI_INTR |
GFAR_HAS_PHY_INTR),
.phyid = 1,
.phyregidx = 0,
};
struct ocp_fs_i2c_data mpc85xx_i2c1_def = {
.flags = FS_I2C_SEPARATE_DFSRR,
};
/* ************************************************************************ */
int
mpc85xx_cds_show_cpuinfo(struct seq_file *m)
{
uint pvid, svid, phid1;
uint memsize = total_memory;
bd_t *binfo = (bd_t *) __res;
unsigned int freq;
/* get the core frequency */
freq = binfo->bi_intfreq;
pvid = mfspr(PVR);
svid = mfspr(SVR);
seq_printf(m, "Vendor\t\t: Freescale Semiconductor\n");
seq_printf(m, "Machine\t\t: CDS (%x)\n", cadmus[CM_VER]);
seq_printf(m, "bus freq\t: %u.%.6u MHz\n", freq / 1000000,
freq % 1000000);
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(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));
return 0;
}
#ifdef CONFIG_CPM2
static void cpm2_cascade(int irq, void *dev_id, struct pt_regs *regs)
{
while((irq = cpm2_get_irq(regs)) >= 0)
{
ppc_irq_dispatch_handler(regs,irq);
}
}
#endif /* CONFIG_CPM2 */
void __init
mpc85xx_cds_init_IRQ(void)
{
bd_t *binfo = (bd_t *) __res;
#ifdef CONFIG_CPM2
volatile cpm2_map_t *immap = cpm2_immr;
int i;
#endif
/* Determine the Physical Address of the OpenPIC regs */
phys_addr_t OpenPIC_PAddr = binfo->bi_immr_base + MPC85xx_OPENPIC_OFFSET;
OpenPIC_Addr = ioremap(OpenPIC_PAddr, MPC85xx_OPENPIC_SIZE);
OpenPIC_InitSenses = mpc85xx_cds_openpic_initsenses;
OpenPIC_NumInitSenses = sizeof (mpc85xx_cds_openpic_initsenses);
/* Skip reserved space and internal sources */
openpic_set_sources(0, 32, OpenPIC_Addr + 0x10200);
/* Map PIC IRQs 0-11 */
openpic_set_sources(32, 12, OpenPIC_Addr + 0x10000);
/* we let openpic interrupts starting from an offset, to
* leave space for cascading interrupts underneath.
*/
openpic_init(MPC85xx_OPENPIC_IRQ_OFFSET);
#ifdef CONFIG_CPM2
/* disable all CPM interupts */
immap->im_intctl.ic_simrh = 0x0;
immap->im_intctl.ic_simrl = 0x0;
for (i = CPM_IRQ_OFFSET; i < (NR_CPM_INTS + CPM_IRQ_OFFSET); i++)
irq_desc[i].handler = &cpm2_pic;
/* Initialize the default interrupt mapping priorities,
* in case the boot rom changed something on us.
*/
immap->im_intctl.ic_sicr = 0;
immap->im_intctl.ic_scprrh = 0x05309770;
immap->im_intctl.ic_scprrl = 0x05309770;
request_irq(MPC85xx_IRQ_CPM, cpm2_cascade, SA_INTERRUPT, "cpm2_cascade", NULL);
#endif
return;
}
#ifdef CONFIG_PCI
/*
* interrupt routing
*/
int
mpc85xx_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
{
struct pci_controller *hose = pci_bus_to_hose(dev->bus->number);
if (!hose->index)
{
/* Handle PCI1 interrupts */
char pci_irq_table[][4] =
/*
* PCI IDSEL/INTPIN->INTLINE
* A B C D
*/
/* Note IRQ assignment for slots is based on which slot the elysium is
* in -- in this setup elysium is in slot #2 (this PIRQA as first
* interrupt on slot */
{
{ 0, 1, 2, 3 }, /* 16 - PMC */
{ 3, 0, 0, 0 }, /* 17 P2P (Tsi320) */
{ 0, 1, 2, 3 }, /* 18 - Slot 1 */
{ 1, 2, 3, 0 }, /* 19 - Slot 2 */
{ 2, 3, 0, 1 }, /* 20 - Slot 3 */
{ 3, 0, 1, 2 }, /* 21 - Slot 4 */
};
const long min_idsel = 16, max_idsel = 21, irqs_per_slot = 4;
int i, j;
for (i = 0; i < 6; i++)
for (j = 0; j < 4; j++)
pci_irq_table[i][j] =
((pci_irq_table[i][j] + 5 -
cds_pci_slot) & 0x3) + PIRQ0A;
return PCI_IRQ_TABLE_LOOKUP;
} else {
/* Handle PCI2 interrupts (if we have one) */
char pci_irq_table[][4] =
{
/*
* We only have one slot and one interrupt
* going to PIRQA - PIRQD */
{ PIRQ1A, PIRQ1A, PIRQ1A, PIRQ1A }, /* 21 - slot 0 */
};
const long min_idsel = 21, max_idsel = 21, irqs_per_slot = 4;
return PCI_IRQ_TABLE_LOOKUP;
}
}
#define ARCADIA_HOST_BRIDGE_IDSEL 17
#define ARCADIA_2ND_BRIDGE_IDSEL 3
int
mpc85xx_exclude_device(u_char bus, u_char devfn)
{
if (bus == 0 && PCI_SLOT(devfn) == 0)
return PCIBIOS_DEVICE_NOT_FOUND;
#ifdef CONFIG_85xx_PCI2
/* With the current code we know PCI2 will be bus 2, however this may
* not be guarnteed */
if (bus == 2 && PCI_SLOT(devfn) == 0)
return PCIBIOS_DEVICE_NOT_FOUND;
#endif
/* We explicitly do not go past the Tundra 320 Bridge */
if (bus == 1)
return PCIBIOS_DEVICE_NOT_FOUND;
if ((bus == 0) && (PCI_SLOT(devfn) == ARCADIA_2ND_BRIDGE_IDSEL))
return PCIBIOS_DEVICE_NOT_FOUND;
else
return PCIBIOS_SUCCESSFUL;
}
#endif /* CONFIG_PCI */
/* ************************************************************************
*
* Setup the architecture
*
*/
static void __init
mpc85xx_cds_setup_arch(void)
{
struct ocp_def *def;
struct ocp_gfar_data *einfo;
bd_t *binfo = (bd_t *) __res;
unsigned int freq;
/* get the core frequency */
freq = binfo->bi_intfreq;
printk("mpc85xx_cds_setup_arch\n");
#ifdef CONFIG_CPM2
cpm2_reset();
#endif
cadmus = ioremap(CADMUS_BASE, CADMUS_SIZE);
cds_pci_slot = ((cadmus[CM_CSR] >> 6) & 0x3) + 1;
printk("CDS Version = %x in PCI slot %d\n", cadmus[CM_VER], cds_pci_slot);
/* Set loops_per_jiffy to a half-way reasonable value,
for use until calibrate_delay gets called. */
loops_per_jiffy = freq / HZ;
#ifdef CONFIG_PCI
/* setup PCI host bridges */
mpc85xx_setup_hose();
#endif
#ifdef CONFIG_SERIAL_8250
mpc85xx_early_serial_map();
#endif
#ifdef CONFIG_SERIAL_TEXT_DEBUG
/* Invalidate the entry we stole earlier the serial ports
* should be properly mapped */
invalidate_tlbcam_entry(NUM_TLBCAMS - 1);
#endif
def = ocp_get_one_device(OCP_VENDOR_FREESCALE, OCP_FUNC_GFAR, 0);
if (def) {
einfo = (struct ocp_gfar_data *) def->additions;
memcpy(einfo->mac_addr, binfo->bi_enetaddr, 6);
}
def = ocp_get_one_device(OCP_VENDOR_FREESCALE, OCP_FUNC_GFAR, 1);
if (def) {
einfo = (struct ocp_gfar_data *) def->additions;
memcpy(einfo->mac_addr, binfo->bi_enet1addr, 6);
}
#ifdef CONFIG_BLK_DEV_INITRD
if (initrd_start)
ROOT_DEV = Root_RAM0;
else
#endif
#ifdef CONFIG_ROOT_NFS
ROOT_DEV = Root_NFS;
#else
ROOT_DEV = Root_HDA1;
#endif
ocp_for_each_device(mpc85xx_update_paddr_ocp, &(binfo->bi_immr_base));
}
/* ************************************************************************ */
void __init
platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
unsigned long r6, unsigned long r7)
{
/* parse_bootinfo must always be called first */
parse_bootinfo(find_bootinfo());
/*
* If we were passed in a board information, copy it into the
* residual data area.
*/
if (r3) {
memcpy((void *) __res, (void *) (r3 + KERNELBASE),
sizeof (bd_t));
}
#ifdef CONFIG_SERIAL_TEXT_DEBUG
{
bd_t *binfo = (bd_t *) __res;
/* Use the last TLB entry to map CCSRBAR to allow access to DUART regs */
settlbcam(NUM_TLBCAMS - 1, binfo->bi_immr_base,
binfo->bi_immr_base, MPC85xx_CCSRBAR_SIZE, _PAGE_IO, 0);
}
#endif
#if defined(CONFIG_BLK_DEV_INITRD)
/*
* If the init RAM disk has been configured in, and there's a valid
* starting address for it, set it up.
*/
if (r4) {
initrd_start = r4 + KERNELBASE;
initrd_end = r5 + KERNELBASE;
}
#endif /* CONFIG_BLK_DEV_INITRD */
/* Copy the kernel command line arguments to a safe place. */
if (r6) {
*(char *) (r7 + KERNELBASE) = 0;
strcpy(cmd_line, (char *) (r6 + KERNELBASE));
}
/* setup the PowerPC module struct */
ppc_md.setup_arch = mpc85xx_cds_setup_arch;
ppc_md.show_cpuinfo = mpc85xx_cds_show_cpuinfo;
ppc_md.init_IRQ = mpc85xx_cds_init_IRQ;
ppc_md.get_irq = openpic_get_irq;
ppc_md.restart = mpc85xx_restart;
ppc_md.power_off = mpc85xx_power_off;
ppc_md.halt = mpc85xx_halt;
ppc_md.find_end_of_memory = mpc85xx_find_end_of_memory;
ppc_md.time_init = NULL;
ppc_md.set_rtc_time = NULL;
ppc_md.get_rtc_time = NULL;
ppc_md.calibrate_decr = mpc85xx_calibrate_decr;
#if defined(CONFIG_SERIAL_8250) && defined(CONFIG_SERIAL_TEXT_DEBUG)
ppc_md.progress = gen550_progress;
#endif /* CONFIG_SERIAL_8250 && CONFIG_SERIAL_TEXT_DEBUG */
if (ppc_md.progress)
ppc_md.progress("mpc85xx_cds_init(): exit", 0);
return;
}
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