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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* FSL SoC setup code
*
* Maintained by Kumar Gala (see MAINTAINERS for contact information)
*
* 2006 (c) MontaVista Software, Inc.
* Vitaly Bordug <vbordug@ru.mvista.com>
*/
#include <linux/stddef.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/errno.h>
#include <linux/major.h>
#include <linux/delay.h>
#include <linux/irq.h>
#include <linux/export.h>
#include <linux/device.h>
#include <linux/platform_device.h>
#include <linux/of.h>
#include <linux/of_platform.h>
#include <linux/phy.h>
#include <linux/spi/spi.h>
#include <linux/fsl_devices.h>
#include <linux/fs_enet_pd.h>
#include <linux/fs_uart_pd.h>
#include <linux/reboot.h>
#include <linux/atomic.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/time.h>
#include <asm/machdep.h>
#include <sysdev/fsl_soc.h>
#include <mm/mmu_decl.h>
#include <asm/cpm2.h>
#include <asm/fsl_hcalls.h> /* For the Freescale hypervisor */
extern void init_fcc_ioports(struct fs_platform_info*);
extern void init_fec_ioports(struct fs_platform_info*);
extern void init_smc_ioports(struct fs_uart_platform_info*);
static phys_addr_t immrbase = -1;
phys_addr_t get_immrbase(void)
{
struct device_node *soc;
if (immrbase != -1)
return immrbase;
soc = of_find_node_by_type(NULL, "soc");
if (soc) {
struct resource res;
if (!of_range_to_resource(soc, 0, &res))
immrbase = res.start;
of_node_put(soc);
}
return immrbase;
}
EXPORT_SYMBOL(get_immrbase);
u32 fsl_get_sys_freq(void)
{
static u32 sysfreq = -1;
struct device_node *soc;
if (sysfreq != -1)
return sysfreq;
soc = of_find_node_by_type(NULL, "soc");
if (!soc)
return -1;
of_property_read_u32(soc, "clock-frequency", &sysfreq);
if (sysfreq == -1 || !sysfreq)
of_property_read_u32(soc, "bus-frequency", &sysfreq);
of_node_put(soc);
return sysfreq;
}
EXPORT_SYMBOL(fsl_get_sys_freq);
#if defined(CONFIG_CPM) || defined(CONFIG_QUICC_ENGINE)
u32 get_brgfreq(void)
{
static u32 brgfreq = -1;
struct device_node *node;
if (brgfreq != -1)
return brgfreq;
node = of_find_compatible_node(NULL, NULL, "fsl,cpm-brg");
if (node) {
of_property_read_u32(node, "clock-frequency", &brgfreq);
of_node_put(node);
return brgfreq;
}
/* Legacy device binding -- will go away when no users are left. */
node = of_find_node_by_type(NULL, "cpm");
if (!node)
node = of_find_compatible_node(NULL, NULL, "fsl,qe");
if (!node)
node = of_find_node_by_type(NULL, "qe");
if (node) {
of_property_read_u32(node, "brg-frequency", &brgfreq);
if (brgfreq == -1 || !brgfreq)
if (!of_property_read_u32(node, "bus-frequency",
&brgfreq))
brgfreq /= 2;
of_node_put(node);
}
return brgfreq;
}
EXPORT_SYMBOL(get_brgfreq);
u32 get_baudrate(void)
{
static u32 fs_baudrate = -1;
struct device_node *node;
if (fs_baudrate != -1)
return fs_baudrate;
node = of_find_node_by_type(NULL, "serial");
if (node) {
of_property_read_u32(node, "current-speed", &fs_baudrate);
of_node_put(node);
}
return fs_baudrate;
}
EXPORT_SYMBOL(get_baudrate);
#endif /* CONFIG_CPM2 */
#if defined(CONFIG_FSL_SOC_BOOKE) || defined(CONFIG_PPC_86xx)
static __be32 __iomem *rstcr;
static int fsl_rstcr_restart(struct notifier_block *this,
unsigned long mode, void *cmd)
{
local_irq_disable();
/* set reset control register */
out_be32(rstcr, 0x2); /* HRESET_REQ */
return NOTIFY_DONE;
}
static int __init setup_rstcr(void)
{
struct device_node *np;
static struct notifier_block restart_handler = {
.notifier_call = fsl_rstcr_restart,
.priority = 128,
};
for_each_node_by_name(np, "global-utilities") {
if (of_property_read_bool(np, "fsl,has-rstcr")) {
rstcr = of_iomap(np, 0) + 0xb0;
if (!rstcr) {
printk (KERN_ERR "Error: reset control "
"register not mapped!\n");
} else {
register_restart_handler(&restart_handler);
}
break;
}
}
of_node_put(np);
return 0;
}
arch_initcall(setup_rstcr);
#endif
#if defined(CONFIG_FB_FSL_DIU) || defined(CONFIG_FB_FSL_DIU_MODULE)
struct platform_diu_data_ops diu_ops;
EXPORT_SYMBOL(diu_ops);
#endif
#ifdef CONFIG_EPAPR_PARAVIRT
/*
* Restart the current partition
*
* This function should be assigned to the ppc_md.restart function pointer,
* to initiate a partition restart when we're running under the Freescale
* hypervisor.
*/
void __noreturn fsl_hv_restart(char *cmd)
{
pr_info("hv restart\n");
fh_partition_restart(-1);
while (1) ;
}
/*
* Halt the current partition
*
* This function should be assigned to the pm_power_off and ppc_md.halt
* function pointers, to shut down the partition when we're running under
* the Freescale hypervisor.
*/
void __noreturn fsl_hv_halt(void)
{
pr_info("hv exit\n");
fh_partition_stop(-1);
while (1) ;
}
#endif
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