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// SPDX-License-Identifier: GPL-2.0-only
/*
*
* Copyright (C) 2010 John Crispin <john@phrozen.org>
*/
#include <linux/export.h>
#include <linux/clk.h>
#include <linux/memblock.h>
#include <linux/of_fdt.h>
#include <asm/bootinfo.h>
#include <asm/time.h>
#include <asm/prom.h>
#include <lantiq.h>
#include "prom.h"
#include "clk.h"
/* access to the ebu needs to be locked between different drivers */
DEFINE_SPINLOCK(ebu_lock);
EXPORT_SYMBOL_GPL(ebu_lock);
/*
* This is needed by the VPE loader code, just set it to 0 and assume
* that the firmware hardcodes this value to something useful.
*/
unsigned long physical_memsize = 0L;
/*
* this struct is filled by the soc specific detection code and holds
* information about the specific soc type, revision and name
*/
static struct ltq_soc_info soc_info;
/*
* These structs are used to override vsmp_init_secondary()
*/
#if defined(CONFIG_MIPS_MT_SMP)
extern const struct plat_smp_ops vsmp_smp_ops;
static struct plat_smp_ops lantiq_smp_ops;
#endif
const char *get_system_type(void)
{
return soc_info.sys_type;
}
int ltq_soc_type(void)
{
return soc_info.type;
}
static void __init prom_init_cmdline(void)
{
int argc = fw_arg0;
char **argv = (char **) KSEG1ADDR(fw_arg1);
int i;
arcs_cmdline[0] = '\0';
for (i = 0; i < argc; i++) {
char *p = (char *) KSEG1ADDR(argv[i]);
if (CPHYSADDR(p) && *p) {
strlcat(arcs_cmdline, p, sizeof(arcs_cmdline));
strlcat(arcs_cmdline, " ", sizeof(arcs_cmdline));
}
}
}
void __init plat_mem_setup(void)
{
void *dtb;
ioport_resource.start = IOPORT_RESOURCE_START;
ioport_resource.end = IOPORT_RESOURCE_END;
iomem_resource.start = IOMEM_RESOURCE_START;
iomem_resource.end = IOMEM_RESOURCE_END;
set_io_port_base((unsigned long) KSEG1);
dtb = get_fdt();
if (dtb == NULL)
panic("no dtb found");
/*
* Load the devicetree. This causes the chosen node to be
* parsed resulting in our memory appearing
*/
__dt_setup_arch(dtb);
}
#if defined(CONFIG_MIPS_MT_SMP)
static void lantiq_init_secondary(void)
{
/*
* MIPS CPU startup function vsmp_init_secondary() will only
* enable some of the interrupts for the second CPU/VPE.
*/
set_c0_status(ST0_IM);
}
#endif
void __init prom_init(void)
{
/* call the soc specific detetcion code and get it to fill soc_info */
ltq_soc_detect(&soc_info);
snprintf(soc_info.sys_type, LTQ_SYS_TYPE_LEN - 1, "%s rev %s",
soc_info.name, soc_info.rev_type);
soc_info.sys_type[LTQ_SYS_TYPE_LEN - 1] = '\0';
pr_info("SoC: %s\n", soc_info.sys_type);
prom_init_cmdline();
#if defined(CONFIG_MIPS_MT_SMP)
lantiq_smp_ops = vsmp_smp_ops;
if (cpu_has_mipsmt)
lantiq_smp_ops.init_secondary = lantiq_init_secondary;
register_smp_ops(&lantiq_smp_ops);
#endif
}
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