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9b73100911
Activate USE_OF for SEAD-3 platform. Add basic DTS file and convert memory detection and reservations to use OF. [ralf@linux-mips.org: Remove unnecessary #ifdef wrapper in generic.h. Make <asm/mips-boards/generic.h> inclusion work even without prior <linux/of_fdt.h> inclusion.] Signed-off-by: Steven J. Hill <sjhill@mips.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/4809/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
95 lines
2.2 KiB
C
95 lines
2.2 KiB
C
/*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved.
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*/
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#include <linux/init.h>
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#include <linux/io.h>
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#include <asm/bootinfo.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/mips-boards/prom.h>
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extern void prom_init_early_console(char port);
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extern char except_vec_nmi;
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extern char except_vec_ejtag_debug;
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int prom_argc;
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int *_prom_argv, *_prom_envp;
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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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/*
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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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return prom_envp(index+1);
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index += 2;
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}
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return NULL;
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}
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static void __init mips_nmi_setup(void)
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{
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void *base;
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base = cpu_has_veic ?
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(void *)(CAC_BASE + 0xa80) :
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(void *)(CAC_BASE + 0x380);
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memcpy(base, &except_vec_nmi, 0x80);
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flush_icache_range((unsigned long)base, (unsigned long)base + 0x80);
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}
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static void __init mips_ejtag_setup(void)
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{
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void *base;
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base = cpu_has_veic ?
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(void *)(CAC_BASE + 0xa00) :
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(void *)(CAC_BASE + 0x300);
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memcpy(base, &except_vec_ejtag_debug, 0x80);
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flush_icache_range((unsigned long)base, (unsigned long)base + 0x80);
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}
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void __init prom_init(void)
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{
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prom_argc = fw_arg0;
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_prom_argv = (int *) fw_arg1;
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_prom_envp = (int *) fw_arg2;
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board_nmi_handler_setup = mips_nmi_setup;
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board_ejtag_handler_setup = mips_ejtag_setup;
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prom_init_cmdline();
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#ifdef CONFIG_EARLY_PRINTK
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if ((strstr(prom_getcmdline(), "console=ttyS0")) != NULL)
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prom_init_early_console(0);
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else if ((strstr(prom_getcmdline(), "console=ttyS1")) != NULL)
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prom_init_early_console(1);
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#endif
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#ifdef CONFIG_SERIAL_8250_CONSOLE
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if ((strstr(prom_getcmdline(), "console=")) == NULL)
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strcat(prom_getcmdline(), " console=ttyS0,38400n8r");
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#endif
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}
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void prom_free_prom_memory(void)
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{
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}
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