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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (C) 2009 Lemote Inc.
* Author: Wu Zhangjin, wuzhangjin@gmail.com
*/
#include <linux/irqchip.h>
#include <linux/logic_pio.h>
#include <linux/memblock.h>
#include <asm/bootinfo.h>
#include <asm/traps.h>
#include <asm/smp-ops.h>
#include <asm/cacheflush.h>
#include <asm/fw/fw.h>
#include <loongson.h>
#include <boot_param.h>
#define NODE_ID_OFFSET_ADDR ((void __iomem *)TO_UNCAC(0x1001041c))
u32 node_id_offset;
static void __init mips_nmi_setup(void)
{
void *base;
extern char except_vec_nmi[];
base = (void *)(CAC_BASE + 0x380);
memcpy(base, except_vec_nmi, 0x80);
flush_icache_range((unsigned long)base, (unsigned long)base + 0x80);
}
void ls7a_early_config(void)
{
node_id_offset = ((readl(NODE_ID_OFFSET_ADDR) >> 8) & 0x1f) + 36;
}
void rs780e_early_config(void)
{
node_id_offset = 37;
}
void __init prom_init(void)
{
fw_init_cmdline();
prom_init_env();
/* init base address of io space */
set_io_port_base(PCI_IOBASE);
loongson_sysconf.early_config();
prom_init_numa_memory();
/* Hardcode to CPU UART 0 */
setup_8250_early_printk_port(TO_UNCAC(LOONGSON_REG_BASE + 0x1e0), 0, 1024);
register_smp_ops(&loongson3_smp_ops);
board_nmi_handler_setup = mips_nmi_setup;
}
void __init prom_free_prom_memory(void)
{
}
static __init void reserve_pio_range(void)
{
struct logic_pio_hwaddr *range;
range = kzalloc(sizeof(*range), GFP_ATOMIC);
if (!range)
return;
range->fwnode = &of_root->fwnode;
range->size = MMIO_LOWER_RESERVED;
range->hw_start = LOONGSON_PCIIO_BASE;
range->flags = LOGIC_PIO_CPU_MMIO;
if (logic_pio_register_range(range)) {
pr_err("Failed to reserve PIO range for legacy ISA\n");
goto free_range;
}
if (WARN(range->io_start != 0,
"Reserved PIO range does not start from 0\n"))
goto unregister;
/*
* i8259 would access I/O space, so mapping must be done here.
* Please remove it when all drivers can be managed by logic_pio.
*/
ioremap_page_range(PCI_IOBASE, PCI_IOBASE + MMIO_LOWER_RESERVED,
LOONGSON_PCIIO_BASE,
pgprot_device(PAGE_KERNEL));
return;
unregister:
logic_pio_unregister_range(range);
free_range:
kfree(range);
}
void __init arch_init_irq(void)
{
reserve_pio_range();
irqchip_init();
}
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