255 lines
6.0 KiB
C
255 lines
6.0 KiB
C
/*
|
|
* Board setup routines for the Emerson KSI8560
|
|
*
|
|
* Author: Alexandr Smirnov <asmirnov@ru.mvista.com>
|
|
*
|
|
* Based on mpc85xx_ads.c maintained by Kumar Gala
|
|
*
|
|
* 2008 (c) MontaVista, Software, 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/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/of_platform.h>
|
|
|
|
#include <asm/system.h>
|
|
#include <asm/time.h>
|
|
#include <asm/machdep.h>
|
|
#include <asm/pci-bridge.h>
|
|
#include <asm/mpic.h>
|
|
#include <mm/mmu_decl.h>
|
|
#include <asm/udbg.h>
|
|
#include <asm/prom.h>
|
|
|
|
#include <sysdev/fsl_soc.h>
|
|
#include <sysdev/fsl_pci.h>
|
|
|
|
#include <asm/cpm2.h>
|
|
#include <sysdev/cpm2_pic.h>
|
|
|
|
|
|
#define KSI8560_CPLD_HVR 0x04 /* Hardware Version Register */
|
|
#define KSI8560_CPLD_PVR 0x08 /* PLD Version Register */
|
|
#define KSI8560_CPLD_RCR1 0x30 /* Reset Command Register 1 */
|
|
|
|
#define KSI8560_CPLD_RCR1_CPUHR 0x80 /* CPU Hard Reset */
|
|
|
|
static void __iomem *cpld_base = NULL;
|
|
|
|
static void machine_restart(char *cmd)
|
|
{
|
|
if (cpld_base)
|
|
out_8(cpld_base + KSI8560_CPLD_RCR1, KSI8560_CPLD_RCR1_CPUHR);
|
|
else
|
|
printk(KERN_ERR "Can't find CPLD base, hang forever\n");
|
|
|
|
for (;;);
|
|
}
|
|
|
|
static void cpm2_cascade(unsigned int irq, struct irq_desc *desc)
|
|
{
|
|
struct irq_chip *chip = irq_desc_get_chip(desc);
|
|
int cascade_irq;
|
|
|
|
while ((cascade_irq = cpm2_get_irq()) >= 0)
|
|
generic_handle_irq(cascade_irq);
|
|
|
|
chip->irq_eoi(&desc->irq_data);
|
|
}
|
|
|
|
static void __init ksi8560_pic_init(void)
|
|
{
|
|
struct mpic *mpic;
|
|
struct resource r;
|
|
struct device_node *np;
|
|
#ifdef CONFIG_CPM2
|
|
int irq;
|
|
#endif
|
|
|
|
np = of_find_node_by_type(NULL, "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,
|
|
0, 256, " OpenPIC ");
|
|
BUG_ON(mpic == NULL);
|
|
of_node_put(np);
|
|
|
|
mpic_init(mpic);
|
|
|
|
#ifdef CONFIG_CPM2
|
|
/* Setup CPM2 PIC */
|
|
np = of_find_compatible_node(NULL, NULL, "fsl,cpm2-pic");
|
|
if (np == NULL) {
|
|
printk(KERN_ERR "PIC init: can not find fsl,cpm2-pic node\n");
|
|
return;
|
|
}
|
|
irq = irq_of_parse_and_map(np, 0);
|
|
|
|
cpm2_pic_init(np);
|
|
of_node_put(np);
|
|
irq_set_chained_handler(irq, cpm2_cascade);
|
|
#endif
|
|
}
|
|
|
|
#ifdef CONFIG_CPM2
|
|
/*
|
|
* Setup I/O ports
|
|
*/
|
|
struct cpm_pin {
|
|
int port, pin, flags;
|
|
};
|
|
|
|
static struct cpm_pin __initdata ksi8560_pins[] = {
|
|
/* SCC1 */
|
|
{3, 29, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
|
|
{3, 30, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
|
|
{3, 31, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
|
|
|
|
/* SCC2 */
|
|
{3, 26, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
|
|
{3, 27, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
|
|
{3, 28, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
|
|
|
|
/* FCC1 */
|
|
{0, 14, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
|
|
{0, 15, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
|
|
{0, 16, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
|
|
{0, 17, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
|
|
{0, 18, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
|
|
{0, 19, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
|
|
{0, 20, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
|
|
{0, 21, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
|
|
{0, 26, CPM_PIN_INPUT | CPM_PIN_SECONDARY},
|
|
{0, 27, CPM_PIN_INPUT | CPM_PIN_SECONDARY},
|
|
{0, 28, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
|
|
{0, 29, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
|
|
{0, 30, CPM_PIN_INPUT | CPM_PIN_SECONDARY},
|
|
{0, 31, CPM_PIN_INPUT | CPM_PIN_SECONDARY},
|
|
{2, 23, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, /* CLK9 */
|
|
{2, 22, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, /* CLK10 */
|
|
|
|
};
|
|
|
|
static void __init init_ioports(void)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(ksi8560_pins); i++) {
|
|
struct cpm_pin *pin = &ksi8560_pins[i];
|
|
cpm2_set_pin(pin->port, pin->pin, pin->flags);
|
|
}
|
|
|
|
cpm2_clk_setup(CPM_CLK_SCC1, CPM_BRG1, CPM_CLK_RX);
|
|
cpm2_clk_setup(CPM_CLK_SCC1, CPM_BRG1, CPM_CLK_TX);
|
|
cpm2_clk_setup(CPM_CLK_SCC2, CPM_BRG2, CPM_CLK_RX);
|
|
cpm2_clk_setup(CPM_CLK_SCC2, CPM_BRG2, CPM_CLK_TX);
|
|
cpm2_clk_setup(CPM_CLK_FCC1, CPM_CLK9, CPM_CLK_RX);
|
|
cpm2_clk_setup(CPM_CLK_FCC1, CPM_CLK10, CPM_CLK_TX);
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* Setup the architecture
|
|
*/
|
|
static void __init ksi8560_setup_arch(void)
|
|
{
|
|
struct device_node *cpld;
|
|
|
|
cpld = of_find_compatible_node(NULL, NULL, "emerson,KSI8560-cpld");
|
|
if (cpld)
|
|
cpld_base = of_iomap(cpld, 0);
|
|
else
|
|
printk(KERN_ERR "Can't find CPLD in device tree\n");
|
|
|
|
if (ppc_md.progress)
|
|
ppc_md.progress("ksi8560_setup_arch()", 0);
|
|
|
|
#ifdef CONFIG_CPM2
|
|
cpm2_reset();
|
|
init_ioports();
|
|
#endif
|
|
}
|
|
|
|
static void ksi8560_show_cpuinfo(struct seq_file *m)
|
|
{
|
|
uint pvid, svid, phid1;
|
|
|
|
pvid = mfspr(SPRN_PVR);
|
|
svid = mfspr(SPRN_SVR);
|
|
|
|
seq_printf(m, "Vendor\t\t: Emerson Network Power\n");
|
|
seq_printf(m, "Board\t\t: KSI8560\n");
|
|
|
|
if (cpld_base) {
|
|
seq_printf(m, "Hardware rev\t: %d\n",
|
|
in_8(cpld_base + KSI8560_CPLD_HVR));
|
|
seq_printf(m, "CPLD rev\t: %d\n",
|
|
in_8(cpld_base + KSI8560_CPLD_PVR));
|
|
} else
|
|
seq_printf(m, "Unknown Hardware and CPLD revs\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));
|
|
}
|
|
|
|
static struct of_device_id __initdata of_bus_ids[] = {
|
|
{ .type = "soc", },
|
|
{ .type = "simple-bus", },
|
|
{ .name = "cpm", },
|
|
{ .name = "localbus", },
|
|
{ .compatible = "gianfar", },
|
|
{},
|
|
};
|
|
|
|
static int __init declare_of_platform_devices(void)
|
|
{
|
|
of_platform_bus_probe(NULL, of_bus_ids, NULL);
|
|
|
|
return 0;
|
|
}
|
|
machine_device_initcall(ksi8560, declare_of_platform_devices);
|
|
|
|
/*
|
|
* Called very early, device-tree isn't unflattened
|
|
*/
|
|
static int __init ksi8560_probe(void)
|
|
{
|
|
unsigned long root = of_get_flat_dt_root();
|
|
|
|
return of_flat_dt_is_compatible(root, "emerson,KSI8560");
|
|
}
|
|
|
|
define_machine(ksi8560) {
|
|
.name = "KSI8560",
|
|
.probe = ksi8560_probe,
|
|
.setup_arch = ksi8560_setup_arch,
|
|
.init_IRQ = ksi8560_pic_init,
|
|
.show_cpuinfo = ksi8560_show_cpuinfo,
|
|
.get_irq = mpic_get_irq,
|
|
.restart = machine_restart,
|
|
.calibrate_decr = generic_calibrate_decr,
|
|
};
|