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[POWERPC] 85xx: Add support for Wind River SBC8560 in arch/powerpc
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This adds support for the Wind River SBC8560 board, implemented as
powerpc.  It closely follows the implementation of the MPC8560ADS.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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Paul Gortmaker authored and Kumar Gala committed Jan 28, 2008
1 parent 1a7507c commit 2c19806
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Showing 3 changed files with 295 additions and 2 deletions.
11 changes: 9 additions & 2 deletions arch/powerpc/platforms/85xx/Kconfig
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Original file line number Diff line number Diff line change
Expand Up @@ -81,6 +81,13 @@ config TQM8560
select TQM85xx
select CPM2

config SBC8560
bool "Wind River SBC8560"
select DEFAULT_UIMAGE
select PPC_CPM_NEW_BINDING
help
This option enables support for the Wind River SBC8560 board

endchoice

config TQM85xx
Expand All @@ -96,7 +103,7 @@ config MPC8540
config MPC8560
bool
select CPM2
default y if MPC8560_ADS || STX_GP3
default y if MPC8560_ADS || STX_GP3 || SBC8560

config MPC85xx
bool
Expand All @@ -106,4 +113,4 @@ config MPC85xx
select FSL_PCI if PCI
select SERIAL_8250_SHARE_IRQ if SERIAL_8250
default y if MPC8540_ADS || MPC85xx_CDS || MPC8560_ADS \
|| MPC85xx_MDS || MPC85xx_DS || STX_GP3
|| MPC85xx_MDS || MPC85xx_DS || STX_GP3 || SBC8560
1 change: 1 addition & 0 deletions arch/powerpc/platforms/85xx/Makefile
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Original file line number Diff line number Diff line change
Expand Up @@ -8,3 +8,4 @@ obj-$(CONFIG_MPC85xx_DS) += mpc85xx_ds.o
obj-$(CONFIG_MPC85xx_MDS) += mpc85xx_mds.o
obj-$(CONFIG_STX_GP3) += stx_gp3.o
obj-$(CONFIG_TQM85xx) += tqm85xx.o
obj-$(CONFIG_SBC8560) += sbc8560.o
285 changes: 285 additions & 0 deletions arch/powerpc/platforms/85xx/sbc8560.c
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Original file line number Diff line number Diff line change
@@ -0,0 +1,285 @@
/*
* Wind River SBC8560 setup and early boot code.
*
* Copyright 2007 Wind River Systems Inc.
*
* By Paul Gortmaker (see MAINTAINERS for contact information)
*
* Based largely on the MPC8560ADS support - Copyright 2005 Freescale 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/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 <sysdev/fsl_soc.h>
#include <sysdev/fsl_pci.h>

#ifdef CONFIG_CPM2
#include <asm/cpm2.h>
#include <sysdev/cpm2_pic.h>
#endif

#ifdef CONFIG_CPM2

static void cpm2_cascade(unsigned int irq, struct irq_desc *desc)
{
int cascade_irq;

while ((cascade_irq = cpm2_get_irq()) >= 0)
generic_handle_irq(cascade_irq);

desc->chip->eoi(irq);
}

#endif /* CONFIG_CPM2 */

static void __init sbc8560_pic_init(void)
{
struct mpic *mpic;
struct resource r;
struct device_node *np = NULL;
#ifdef CONFIG_CPM2
int irq;
#endif

np = of_find_node_by_type(np, "open-pic");
if (!np) {
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);
set_irq_chained_handler(irq, cpm2_cascade);
#endif
}

/*
* Setup the architecture
*/
#ifdef CONFIG_CPM2
struct cpm_pin {
int port, pin, flags;
};

static const struct cpm_pin sbc8560_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},

/* FCC2 */
{1, 18, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
{1, 19, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
{1, 20, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
{1, 21, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
{1, 22, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
{1, 23, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
{1, 24, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
{1, 25, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
{1, 26, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
{1, 27, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
{1, 28, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
{1, 29, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
{1, 30, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
{1, 31, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
{2, 18, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, /* CLK14 */
{2, 19, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, /* CLK13 */

/* FCC3 */
{1, 4, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
{1, 5, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
{1, 6, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
{1, 7, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
{1, 8, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
{1, 9, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
{1, 10, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
{1, 11, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
{1, 12, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
{1, 13, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
{1, 14, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
{1, 15, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
{1, 16, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
{1, 17, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
{2, 16, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* CLK16 */
{2, 17, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* CLK15 */
};

static void __init init_ioports(void)
{
int i;

for (i = 0; i < ARRAY_SIZE(sbc8560_pins); i++) {
struct cpm_pin *pin = &sbc8560_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_FCC2, CPM_CLK13, CPM_CLK_RX);
cpm2_clk_setup(CPM_CLK_FCC2, CPM_CLK14, CPM_CLK_TX);
cpm2_clk_setup(CPM_CLK_FCC3, CPM_CLK15, CPM_CLK_RX);
cpm2_clk_setup(CPM_CLK_FCC3, CPM_CLK16, CPM_CLK_TX);
}
#endif

static void __init sbc8560_setup_arch(void)
{
#ifdef CONFIG_PCI
struct device_node *np;
#endif

if (ppc_md.progress)
ppc_md.progress("sbc8560_setup_arch()", 0);

#ifdef CONFIG_CPM2
cpm2_reset();
init_ioports();
#endif

#ifdef CONFIG_PCI
for_each_compatible_node(np, "pci", "fsl,mpc8540-pci")
fsl_add_bridge(np, 1);
#endif
}

static void sbc8560_show_cpuinfo(struct seq_file *m)
{
uint pvid, svid, phid1;
uint memsize = total_memory;

pvid = mfspr(SPRN_PVR);
svid = mfspr(SPRN_SVR);

seq_printf(m, "Vendor\t\t: Wind River\n");
seq_printf(m, "Machine\t\t: SBC8560\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));

/* Display the amount of memory */
seq_printf(m, "Memory\t\t: %d MB\n", memsize / (1024 * 1024));
}

static struct of_device_id __initdata of_bus_ids[] = {
{ .name = "soc", },
{ .type = "soc", },
{ .name = "cpm", },
{ .name = "localbus", },
{},
};

static int __init declare_of_platform_devices(void)
{
if (!machine_is(sbc8560))
return 0;

of_platform_bus_probe(NULL, of_bus_ids, NULL);
return 0;
}
device_initcall(declare_of_platform_devices);

/*
* Called very early, device-tree isn't unflattened
*/
static int __init sbc8560_probe(void)
{
unsigned long root = of_get_flat_dt_root();

return of_flat_dt_is_compatible(root, "SBC8560");
}

#ifdef CONFIG_RTC_DRV_M48T59
static int __init sbc8560_rtc_init(void)
{
struct device_node *np;
struct resource res;
struct platform_device *rtc_dev;

np = of_find_compatible_node(NULL, NULL, "m48t59");
if (np == NULL) {
printk("No RTC in DTB. Has it been eaten by wild dogs?\n");
return -ENODEV;
}

of_address_to_resource(np, 0, &res);
of_node_put(np);

printk("Found RTC (m48t59) at i/o 0x%x\n", res.start);

rtc_dev = platform_device_register_simple("rtc-m48t59", 0, &res, 1);

if (IS_ERR(rtc_dev)) {
printk("Registering sbc8560 RTC device failed\n");
return PTR_ERR(rtc_dev);
}

return 0;
}

arch_initcall(sbc8560_rtc_init);

#endif /* M48T59 */

define_machine(sbc8560) {
.name = "SBC8560",
.probe = sbc8560_probe,
.setup_arch = sbc8560_setup_arch,
.init_IRQ = sbc8560_pic_init,
.show_cpuinfo = sbc8560_show_cpuinfo,
.get_irq = mpic_get_irq,
.restart = fsl_rstcr_restart,
.calibrate_decr = generic_calibrate_decr,
.progress = udbg_progress,
};

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