2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License as published by
4 * the Free Software Foundation; either version 2 of the License, or
5 * (at your option) any later version.
7 * This program is distributed in the hope that it will be useful,
8 * but WITHOUT ANY WARRANTY; without even the implied warranty of
9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10 * GNU General Public License for more details.
12 * You should have received a copy of the GNU General Public License
13 * along with this program; if not, write to the Free Software
14 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
16 * Copyright (C) 2005 Wu Qi Ming infineon
17 * Copyright (C) 2007 John Crispin <blogic@openwrt.org>
20 #include <linux/init.h>
21 #include <linux/module.h>
22 #include <linux/bootmem.h>
23 #include <asm/bootinfo.h>
24 #include <asm/ifxmips/ifxmips.h>
26 static char buf[1024];
27 unsigned int *prom_cp1_base = NULL;
28 unsigned int prom_cp1_size = 0;
30 #ifdef IFXMIPS_PROM_ASC0
31 #define IFXMIPS_ASC_DIFF 0
33 #define IFXMIPS_ASC_DIFF IFXMIPS_ASC_BASE_DIFF
37 asc_r32(unsigned long r)
39 return ifxmips_r32((u32*)(IFXMIPS_ASC_BASE_ADDR + IFXMIPS_ASC_DIFF + r));
43 asc_w32(u32 v, unsigned long r)
45 ifxmips_w32(v, (u32*)(IFXMIPS_ASC_BASE_ADDR + IFXMIPS_ASC_DIFF + r));
49 prom_free_prom_memory(void)
58 local_irq_save(flags);
59 while((asc_r32(IFXMIPS_ASC_FSTAT) & ASCFSTAT_TXFFLMASK) >> ASCFSTAT_TXFFLOFF);
62 asc_w32('\r', IFXMIPS_ASC_TBUF);
63 asc_w32(c, IFXMIPS_ASC_TBUF);
64 local_irq_restore(flags);
68 prom_printf(const char * fmt, ...)
75 l = vsprintf(buf, fmt, args);
79 for(p = buf; p < buf_end; p++)
83 unsigned int *prom_get_cp1_base(void)
87 EXPORT_SYMBOL(prom_get_cp1_base);
89 unsigned int prom_get_cp1_size(void)
93 EXPORT_SYMBOL(prom_get_cp1_size);
99 char **argv = (char **) fw_arg1;
100 char **envp = (char **) fw_arg2;
105 mips_machtype = MACH_INFINEON_IFXMIPS;
107 argv = (char**)KSEG1ADDR((unsigned long)argv);
108 arcs_cmdline[0] = '\0';
109 for(i = 1; i < argc; i++)
111 char *a = (char*)KSEG1ADDR(argv[i]);
114 if(strlen(arcs_cmdline) + strlen(a + 1) >= sizeof(arcs_cmdline))
116 strcat(arcs_cmdline, a);
117 strcat(arcs_cmdline, " ");
120 envp = (char**)KSEG1ADDR((unsigned long)envp);
123 char *e = (char*)KSEG1ADDR(*envp);
125 if(!strncmp(e, "memsize=", 8))
128 memsize = simple_strtoul(e, NULL, 10);
134 memsize -= prom_cp1_size;
135 prom_cp1_base = (unsigned int*)(0xA0000000 + (memsize * 1024 * 1024));
137 prom_printf("Using %dMB Ram and reserving %dMB for cp1\n", memsize, prom_cp1_size);
138 memsize *= 1024 * 1024;
141 strcpy(&(arcs_cmdline[0]),
142 "console=ttyS0,115200 rootfstype=squashfs,jffs2 init=/etc/preinit");
144 add_memory_region(0x00000000, memsize, BOOT_MEM_RAM);