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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (c) 2011 Zhang, Keguang <keguang.zhang@gmail.com>
*
* Modified from arch/mips/pnx833x/common/prom.c.
*/
#include <linux/io.h>
#include <linux/init.h>
#include <linux/serial_reg.h>
#include <asm/bootinfo.h>
#include <asm/fw/fw.h>
#include <loongson1.h>
unsigned long memsize;
void __init prom_init(void)
{
void __iomem *uart_base;
fw_init_cmdline();
memsize = fw_getenvl("memsize");
if(!memsize)
memsize = DEFAULT_MEMSIZE;
if (strstr(arcs_cmdline, "console=ttyS3"))
uart_base = ioremap_nocache(LS1X_UART3_BASE, 0x0f);
else if (strstr(arcs_cmdline, "console=ttyS2"))
uart_base = ioremap_nocache(LS1X_UART2_BASE, 0x0f);
else if (strstr(arcs_cmdline, "console=ttyS1"))
uart_base = ioremap_nocache(LS1X_UART1_BASE, 0x0f);
else
uart_base = ioremap_nocache(LS1X_UART0_BASE, 0x0f);
setup_8250_early_printk_port((unsigned long)uart_base, 0, 0);
}
void __init prom_free_prom_memory(void)
{
}
void __init plat_mem_setup(void)
{
add_memory_region(0x0, (memsize << 20), BOOT_MEM_RAM);
}
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