mirror of https://gitee.com/openkylin/linux.git
52 lines
917 B
C
52 lines
917 B
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* prom.c:
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*
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* Copyright 2008 NXP Semiconductors
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* Chris Steel <chris.steel@nxp.com>
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* Daniel Laird <daniel.j.laird@nxp.com>
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*
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* Based on software written by:
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* Nikita Youshchenko <yoush@debian.org>, based on PNX8550 code.
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*/
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#include <linux/init.h>
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#include <asm/bootinfo.h>
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#include <linux/string.h>
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void __init prom_init_cmdline(void)
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{
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int argc = fw_arg0;
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char **argv = (char **)fw_arg1;
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char *c = &(arcs_cmdline[0]);
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int i;
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for (i = 1; i < argc; i++) {
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strcpy(c, argv[i]);
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c += strlen(argv[i]);
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if (i < argc-1)
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*c++ = ' ';
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}
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*c = 0;
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}
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char __init *prom_getenv(char *envname)
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{
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extern char **prom_envp;
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char **env = prom_envp;
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int i;
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i = strlen(envname);
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while (*env) {
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if (strncmp(envname, *env, i) == 0 && *(*env+i) == '=')
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return *env + i + 1;
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env++;
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}
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return 0;
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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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