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/*
* Yucca board specific routines
*
* Roland Dreier <rolandd@cisco.com> (based on luan.c by Matt Porter)
*
* Copyright 2004-2005 MontaVista Software Inc.
* Copyright (c) 2005 Cisco Systems. All rights reserved.
*
* 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/init.h>
#include <linux/errno.h>
#include <linux/reboot.h>
#include <linux/pci.h>
#include <linux/kdev_t.h>
#include <linux/types.h>
#include <linux/major.h>
#include <linux/blkdev.h>
#include <linux/console.h>
#include <linux/delay.h>
#include <linux/ide.h>
#include <linux/initrd.h>
#include <linux/seq_file.h>
#include <linux/root_dev.h>
#include <linux/tty.h>
#include <linux/serial.h>
#include <linux/serial_core.h>
#include <linux/serial_8250.h>
#include <asm/system.h>
#include <asm/pgtable.h>
#include <asm/page.h>
#include <asm/dma.h>
#include <asm/io.h>
#include <asm/machdep.h>
#include <asm/ocp.h>
#include <asm/pci-bridge.h>
#include <asm/time.h>
#include <asm/todc.h>
#include <asm/bootinfo.h>
#include <asm/ppc4xx_pic.h>
#include <asm/ppcboot.h>
#include <syslib/ibm44x_common.h>
#include <syslib/ibm440gx_common.h>
#include <syslib/ibm440sp_common.h>
#include <syslib/ppc440spe_pcie.h>
extern bd_t __res;
static struct ibm44x_clocks clocks __initdata;
static void __init
yucca_calibrate_decr(void)
{
unsigned int freq;
if (mfspr(SPRN_CCR1) & CCR1_TCS)
freq = YUCCA_TMR_CLK;
else
freq = clocks.cpu;
ibm44x_calibrate_decr(freq);
}
static int
yucca_show_cpuinfo(struct seq_file *m)
{
seq_printf(m, "vendor\t\t: AMCC\n");
seq_printf(m, "machine\t\t: PPC440SPe EVB (Yucca)\n");
return 0;
}
static enum {
HOSE_UNKNOWN,
HOSE_PCIX,
HOSE_PCIE0,
HOSE_PCIE1,
HOSE_PCIE2
} hose_type[4];
static inline int
yucca_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_type[hose->index] == HOSE_PCIX) {
static char pci_irq_table[][4] =
/*
* PCI IDSEL/INTPIN->INTLINE
* A B C D
*/
{
{ 81, -1, -1, -1 }, /* IDSEL 1 - PCIX0 Slot 0 */
};
const long min_idsel = 1, max_idsel = 1, irqs_per_slot = 4;
return PCI_IRQ_TABLE_LOOKUP;
} else if (hose_type[hose->index] == HOSE_PCIE0) {
static char pci_irq_table[][4] =
/*
* PCI IDSEL/INTPIN->INTLINE
* A B C D
*/
{
{ 96, 97, 98, 99 },
};
const long min_idsel = 1, max_idsel = 1, irqs_per_slot = 4;
return PCI_IRQ_TABLE_LOOKUP;
} else if (hose_type[hose->index] == HOSE_PCIE1) {
static char pci_irq_table[][4] =
/*
* PCI IDSEL/INTPIN->INTLINE
* A B C D
*/
{
{ 100, 101, 102, 103 },
};
const long min_idsel = 1, max_idsel = 1, irqs_per_slot = 4;
return PCI_IRQ_TABLE_LOOKUP;
} else if (hose_type[hose->index] == HOSE_PCIE2) {
static char pci_irq_table[][4] =
/*
* PCI IDSEL/INTPIN->INTLINE
* A B C D
*/
{
{ 104, 105, 106, 107 },
};
const long min_idsel = 1, max_idsel = 1, irqs_per_slot = 4;
return PCI_IRQ_TABLE_LOOKUP;
}
return -1;
}
static void __init yucca_set_emacdata(void)
{
struct ocp_def *def;
struct ocp_func_emac_data *emacdata;
/* Set phy_map, phy_mode, and mac_addr for the EMAC */
def = ocp_get_one_device(OCP_VENDOR_IBM, OCP_FUNC_EMAC, 0);
emacdata = def->additions;
emacdata->phy_map = 0x00000001; /* Skip 0x00 */
emacdata->phy_mode = PHY_MODE_GMII;
memcpy(emacdata->mac_addr, __res.bi_enetaddr, 6);
}
static int __init yucca_pcie_card_present(int port)
{
void __iomem *pcie_fpga_base;
u16 reg;
pcie_fpga_base = ioremap64(YUCCA_FPGA_REG_BASE, YUCCA_FPGA_REG_SIZE);
reg = in_be16(pcie_fpga_base + FPGA_REG1C);
iounmap(pcie_fpga_base);
switch(port) {
case 0: return !(reg & FPGA_REG1C_PE0_PRSNT);
case 1: return !(reg & FPGA_REG1C_PE1_PRSNT);
case 2: return !(reg & FPGA_REG1C_PE2_PRSNT);
default: return 0;
}
}
/*
* For the given slot, set rootpoint mode, send power to the slot,
* turn on the green LED and turn off the yellow LED, enable the clock
* and turn off reset.
*/
static void __init yucca_setup_pcie_fpga_rootpoint(int port)
{
void __iomem *pcie_reg_fpga_base;
u16 power, clock, green_led, yellow_led, reset_off, rootpoint, endpoint;
pcie_reg_fpga_base = ioremap64(YUCCA_FPGA_REG_BASE, YUCCA_FPGA_REG_SIZE);
switch(port) {
case 0:
rootpoint = FPGA_REG1C_PE0_ROOTPOINT;
endpoint = 0;
power = FPGA_REG1A_PE0_PWRON;
green_led = FPGA_REG1A_PE0_GLED;
clock = FPGA_REG1A_PE0_REFCLK_ENABLE;
yellow_led = FPGA_REG1A_PE0_YLED;
reset_off = FPGA_REG1C_PE0_PERST;
break;
case 1:
rootpoint = 0;
endpoint = FPGA_REG1C_PE1_ENDPOINT;
power = FPGA_REG1A_PE1_PWRON;
green_led = FPGA_REG1A_PE1_GLED;
clock = FPGA_REG1A_PE1_REFCLK_ENABLE;
yellow_led = FPGA_REG1A_PE1_YLED;
reset_off = FPGA_REG1C_PE1_PERST;
break;
case 2:
rootpoint = 0;
endpoint = FPGA_REG1C_PE2_ENDPOINT;
power = FPGA_REG1A_PE2_PWRON;
green_led = FPGA_REG1A_PE2_GLED;
clock = FPGA_REG1A_PE2_REFCLK_ENABLE;
yellow_led = FPGA_REG1A_PE2_YLED;
reset_off = FPGA_REG1C_PE2_PERST;
break;
default:
return;
}
out_be16(pcie_reg_fpga_base + FPGA_REG1A,
~(power | clock | green_led) &
(yellow_led | in_be16(pcie_reg_fpga_base + FPGA_REG1A)));
out_be16(pcie_reg_fpga_base + FPGA_REG1C,
~(endpoint | reset_off) &
(rootpoint | in_be16(pcie_reg_fpga_base + FPGA_REG1C)));
/*
* Leave device in reset for a while after powering on the
* slot to give it a chance to initialize.
*/
mdelay(250);
out_be16(pcie_reg_fpga_base + FPGA_REG1C,
reset_off | in_be16(pcie_reg_fpga_base + FPGA_REG1C));
iounmap(pcie_reg_fpga_base);
}
static void __init
yucca_setup_hoses(void)
{
struct pci_controller *hose;
char name[20];
int i;
if (0 && ppc440spe_init_pcie()) {
printk(KERN_WARNING "PPC440SPe PCI Express initialization failed\n");
return;
}
for (i = 0; i <= 2; ++i) {
if (!yucca_pcie_card_present(i))
continue;
printk(KERN_INFO "PCIE%d: card present\n", i);
yucca_setup_pcie_fpga_rootpoint(i);
if (ppc440spe_init_pcie_rootport(i)) {
printk(KERN_WARNING "PCIE%d: initialization failed\n", i);
continue;
}
hose = pcibios_alloc_controller();
if (!hose)
return;
sprintf(name, "PCIE%d host bridge", i);
pci_init_resource(&hose->io_resource,
YUCCA_PCIX_LOWER_IO,
YUCCA_PCIX_UPPER_IO,
IORESOURCE_IO,
name);
hose->mem_space.start = YUCCA_PCIE_LOWER_MEM +
i * YUCCA_PCIE_MEM_SIZE;
hose->mem_space.end = hose->mem_space.start +
YUCCA_PCIE_MEM_SIZE - 1;
pci_init_resource(&hose->mem_resources[0],
hose->mem_space.start,
hose->mem_space.end,
IORESOURCE_MEM,
name);
hose->first_busno = 0;
hose->last_busno = 15;
hose_type[hose->index] = HOSE_PCIE0 + i;
ppc440spe_setup_pcie(hose, i);
hose->last_busno = pciauto_bus_scan(hose, hose->first_busno);
}
ppc_md.pci_swizzle = common_swizzle;
ppc_md.pci_map_irq = yucca_map_irq;
}
TODC_ALLOC();
static void __init
yucca_early_serial_map(void)
{
struct uart_port port;
/* Setup ioremapped serial port access */
memset(&port, 0, sizeof(port));
port.membase = ioremap64(PPC440SPE_UART0_ADDR, 8);
port.irq = UART0_INT;
port.uartclk = clocks.uart0;
port.regshift = 0;
port.iotype = UPIO_MEM;
port.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST;
port.line = 0;
if (early_serial_setup(&port) != 0) {
printk("Early serial init of port 0 failed\n");
}
port.membase = ioremap64(PPC440SPE_UART1_ADDR, 8);
port.irq = UART1_INT;
port.uartclk = clocks.uart1;
port.line = 1;
if (early_serial_setup(&port) != 0) {
printk("Early serial init of port 1 failed\n");
}
port.membase = ioremap64(PPC440SPE_UART2_ADDR, 8);
port.irq = UART2_INT;
port.uartclk = BASE_BAUD;
port.line = 2;
if (early_serial_setup(&port) != 0) {
printk("Early serial init of port 2 failed\n");
}
}
static void __init
yucca_setup_arch(void)
{
yucca_set_emacdata();
#if !defined(CONFIG_BDI_SWITCH)
/*
* The Abatron BDI JTAG debugger does not tolerate others
* mucking with the debug registers.
*/
mtspr(SPRN_DBCR0, (DBCR0_TDE | DBCR0_IDM));
#endif
/*
* Determine various clocks.
* To be completely correct we should get SysClk
* from FPGA, because it can be changed by on-board switches
* --ebs
*/
/* 440GX and 440SPe clocking is the same - rd */
ibm440gx_get_clocks(&clocks, 33333333, 6 * 1843200);
ocp_sys_info.opb_bus_freq = clocks.opb;
/* init to some ~sane value until calibrate_delay() runs */
loops_per_jiffy = 50000000/HZ;
/* Setup PCIXn host bridges */
yucca_setup_hoses();
#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
yucca_early_serial_map();
/* Identify the system */
printk("Yucca port (Roland Dreier <rolandd@cisco.com>)\n");
}
void __init platform_init(unsigned long r3, unsigned long r4,
unsigned long r5, unsigned long r6, unsigned long r7)
{
ibm44x_platform_init(r3, r4, r5, r6, r7);
ppc_md.setup_arch = yucca_setup_arch;
ppc_md.show_cpuinfo = yucca_show_cpuinfo;
ppc_md.find_end_of_memory = ibm440sp_find_end_of_memory;
ppc_md.get_irq = NULL; /* Set in ppc4xx_pic_init() */
ppc_md.calibrate_decr = yucca_calibrate_decr;
#ifdef CONFIG_KGDB
ppc_md.early_serial_map = yucca_early_serial_map;
#endif
}
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