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