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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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c3d8d85019
This patchs uses a loongson_uart_base variable instead of the uart_base[] array and adds a new kernel option to avoid to compile uart_base.c all the time, which will save a little bit of memory for us. Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com> Cc: linux-mips@linux-mips.org http://patchwork.linux-mips.org/patch/727/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
40 lines
988 B
C
40 lines
988 B
C
/*
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* Copyright (C) 2009 Lemote Inc.
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* Author: Wu Zhangjin, wuzj@lemote.com
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*/
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#include <linux/bootmem.h>
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#include <loongson.h>
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/* Loongson CPU address windows config space base address */
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unsigned long __maybe_unused _loongson_addrwincfg_base;
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void __init prom_init(void)
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{
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/* init base address of io space */
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set_io_port_base((unsigned long)
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ioremap(LOONGSON_PCIIO_BASE, LOONGSON_PCIIO_SIZE));
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#ifdef CONFIG_CPU_SUPPORTS_ADDRWINCFG
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_loongson_addrwincfg_base = (unsigned long)
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ioremap(LOONGSON_ADDRWINCFG_BASE, LOONGSON_ADDRWINCFG_SIZE);
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#endif
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prom_init_cmdline();
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prom_init_env();
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prom_init_memory();
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/*init the uart base address */
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prom_init_uart_base();
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}
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void __init prom_free_prom_memory(void)
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{
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}
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