bc71c0961c
This adds support for the U9540 variant of the U8500 series. This is an application processor without internal modem. This is the most basic part with ASIC ID, CPU-related fixes, IRQ list, register ranges, timer, UART, and L2 cache setup. This is based on a patch by Michel Jaouen which was rewritten to fit with the latest 3.3 kernel. ChangeLog v1->v2: deleted the irqs-db9540.h file since we expect to migrate to using Device Tree for getting the IRQs to devices. ChangeLog v2->v3: introduced a fixed virtual offset for the ROM as suggested by Arnd Bergmann. Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Sebastien Pasdeloup <sebastien.pasdeloup-nonst@stericsson.com> Signed-off-by: Michel Jaouen <michel.jaouen@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
139 lines
3.3 KiB
C
139 lines
3.3 KiB
C
/*
|
|
* Copyright (C) ST-Ericsson SA 2010
|
|
*
|
|
* Author: Rabin Vincent <rabin.vincent@stericsson.com> for ST-Ericsson
|
|
* Author: Lee Jones <lee.jones@linaro.org> for ST-Ericsson
|
|
* License terms: GNU General Public License (GPL) version 2
|
|
*/
|
|
|
|
#include <linux/platform_device.h>
|
|
#include <linux/io.h>
|
|
#include <linux/clk.h>
|
|
#include <linux/mfd/db8500-prcmu.h>
|
|
#include <linux/mfd/db5500-prcmu.h>
|
|
#include <linux/clksrc-dbx500-prcmu.h>
|
|
#include <linux/sys_soc.h>
|
|
#include <linux/err.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/stat.h>
|
|
#include <linux/of.h>
|
|
#include <linux/of_irq.h>
|
|
|
|
#include <asm/hardware/gic.h>
|
|
#include <asm/mach/map.h>
|
|
|
|
#include <mach/hardware.h>
|
|
#include <mach/setup.h>
|
|
#include <mach/devices.h>
|
|
|
|
#include "clock.h"
|
|
|
|
void __iomem *_PRCMU_BASE;
|
|
|
|
static const struct of_device_id ux500_dt_irq_match[] = {
|
|
{ .compatible = "arm,cortex-a9-gic", .data = gic_of_init, },
|
|
{},
|
|
};
|
|
|
|
void __init ux500_init_irq(void)
|
|
{
|
|
void __iomem *dist_base;
|
|
void __iomem *cpu_base;
|
|
|
|
if (cpu_is_u5500()) {
|
|
dist_base = __io_address(U5500_GIC_DIST_BASE);
|
|
cpu_base = __io_address(U5500_GIC_CPU_BASE);
|
|
} else if (cpu_is_u8500_family()) {
|
|
dist_base = __io_address(U8500_GIC_DIST_BASE);
|
|
cpu_base = __io_address(U8500_GIC_CPU_BASE);
|
|
} else
|
|
ux500_unknown_soc();
|
|
|
|
#ifdef CONFIG_OF
|
|
if (of_have_populated_dt())
|
|
of_irq_init(ux500_dt_irq_match);
|
|
else
|
|
#endif
|
|
gic_init(0, 29, dist_base, cpu_base);
|
|
|
|
/*
|
|
* Init clocks here so that they are available for system timer
|
|
* initialization.
|
|
*/
|
|
if (cpu_is_u5500())
|
|
db5500_prcmu_early_init();
|
|
if (cpu_is_u8500_family())
|
|
db8500_prcmu_early_init();
|
|
clk_init();
|
|
}
|
|
|
|
static const char * __init ux500_get_machine(void)
|
|
{
|
|
return kasprintf(GFP_KERNEL, "DB%4x", dbx500_partnumber());
|
|
}
|
|
|
|
static const char * __init ux500_get_family(void)
|
|
{
|
|
return kasprintf(GFP_KERNEL, "ux500");
|
|
}
|
|
|
|
static const char * __init ux500_get_revision(void)
|
|
{
|
|
unsigned int rev = dbx500_revision();
|
|
|
|
if (rev == 0x01)
|
|
return kasprintf(GFP_KERNEL, "%s", "ED");
|
|
else if (rev >= 0xA0)
|
|
return kasprintf(GFP_KERNEL, "%d.%d",
|
|
(rev >> 4) - 0xA + 1, rev & 0xf);
|
|
|
|
return kasprintf(GFP_KERNEL, "%s", "Unknown");
|
|
}
|
|
|
|
static ssize_t ux500_get_process(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
if (dbx500_id.process == 0x00)
|
|
return sprintf(buf, "Standard\n");
|
|
|
|
return sprintf(buf, "%02xnm\n", dbx500_id.process);
|
|
}
|
|
|
|
static void __init soc_info_populate(struct soc_device_attribute *soc_dev_attr,
|
|
const char *soc_id)
|
|
{
|
|
soc_dev_attr->soc_id = soc_id;
|
|
soc_dev_attr->machine = ux500_get_machine();
|
|
soc_dev_attr->family = ux500_get_family();
|
|
soc_dev_attr->revision = ux500_get_revision();
|
|
}
|
|
|
|
struct device_attribute ux500_soc_attr =
|
|
__ATTR(process, S_IRUGO, ux500_get_process, NULL);
|
|
|
|
struct device * __init ux500_soc_device_init(const char *soc_id)
|
|
{
|
|
struct device *parent;
|
|
struct soc_device *soc_dev;
|
|
struct soc_device_attribute *soc_dev_attr;
|
|
|
|
soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL);
|
|
if (!soc_dev_attr)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
soc_info_populate(soc_dev_attr, soc_id);
|
|
|
|
soc_dev = soc_device_register(soc_dev_attr);
|
|
if (IS_ERR_OR_NULL(soc_dev)) {
|
|
kfree(soc_dev_attr);
|
|
return NULL;
|
|
}
|
|
|
|
parent = soc_device_to_device(soc_dev);
|
|
if (!IS_ERR_OR_NULL(parent))
|
|
device_create_file(parent, &ux500_soc_attr);
|
|
|
|
return parent;
|
|
}
|