270690e00c
Remove 'arch/mips/include/asm/mips-boards/prom.h' and get rid of all inclusions of it by Malta and SEAD-3 platforms. [ralf@linux-mips.org: Fold in John Crispin <blogic@openwrt.org>'s "MIPS: ar7 powertv build"]. [ralf@linux-mips.org: Fold in John Crispin <blogic@openwrt.org>'s "MIPS: unbreak powertv build"]. [ralf@linux-mips.org: Test. Build. Your. Fscking. Code. Or...] Signed-off-by: Steven J. Hill <Steven.Hill@imgtec.com>
94 lines
2.4 KiB
C
94 lines
2.4 KiB
C
/*
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* Copyright (C) 1999, 2000, 2004, 2005 MIPS Technologies, Inc.
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* All rights reserved.
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* Authors: Carsten Langgaard <carstenl@mips.com>
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* Maciej W. Rozycki <macro@mips.com>
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* Portions copyright (C) 2009 Cisco Systems, Inc.
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*
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* This program is free software; you can distribute it and/or modify it
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* under the terms of the GNU General Public License (Version 2) as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
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*
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* PROM library initialisation code.
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*/
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#include <linux/init.h>
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#include <linux/string.h>
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#include <linux/kernel.h>
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#include <asm/bootinfo.h>
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#include <linux/io.h>
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#include <asm/cacheflush.h>
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#include <asm/traps.h>
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#include <asm/mips-boards/generic.h>
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#include <asm/mach-powertv/asic.h>
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#include "init.h"
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static int *_prom_envp;
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unsigned long _prom_memsize;
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/*
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* YAMON (32-bit PROM) pass arguments and environment as 32-bit pointer.
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* This macro take care of sign extension, if running in 64-bit mode.
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*/
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#define prom_envp(index) ((char *)(long)_prom_envp[(index)])
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char *prom_getenv(char *envname)
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{
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char *result = NULL;
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if (_prom_envp != NULL) {
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/*
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* Return a pointer to the given environment variable.
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* In 64-bit mode: we're using 64-bit pointers, but all pointers
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* in the PROM structures are only 32-bit, so we need some
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* workarounds, if we are running in 64-bit mode.
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*/
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int i, index = 0;
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i = strlen(envname);
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while (prom_envp(index)) {
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if (strncmp(envname, prom_envp(index), i) == 0) {
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result = prom_envp(index + 1);
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break;
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}
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index += 2;
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}
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}
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return result;
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}
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void __init prom_init(void)
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{
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int prom_argc;
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char *prom_argv;
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prom_argc = fw_arg0;
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prom_argv = (char *) fw_arg1;
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_prom_envp = (int *) fw_arg2;
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_prom_memsize = (unsigned long) fw_arg3;
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if (prom_argc == 1) {
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strlcat(arcs_cmdline, " ", COMMAND_LINE_SIZE);
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strlcat(arcs_cmdline, prom_argv, COMMAND_LINE_SIZE);
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}
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configure_platform();
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prom_meminit();
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#ifndef CONFIG_BOOTLOADER_DRIVER
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pr_info("\nBootloader driver isn't loaded...\n");
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#endif
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}
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