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/bootmem.h>
22 #include <asm/bootinfo.h>
23 #include <asm/ifxmips/ifxmips.h>
25 static char buf[1024];
26 unsigned int *prom_cp1_base = NULL;
27 unsigned int prom_cp1_size = 0;
30 asc_r32(unsigned long r)
32 return ifxmips_r32((u32*)(IFXMIPS_ASC_BASE_ADDR + IFXMIPS_ASC_BASE_DIFF + r));
36 asc_w32(u32 v, unsigned long r)
38 ifxmips_w32(v, (u32*)(IFXMIPS_ASC_BASE_ADDR + IFXMIPS_ASC_BASE_DIFF + r));
42 prom_free_prom_memory(void)
51 local_irq_save(flags);
52 while((asc_r32(IFXMIPS_ASC_FSTAT) & ASCFSTAT_TXFFLMASK) >> ASCFSTAT_TXFFLOFF);
55 asc_w32('\r', IFXMIPS_ASC_TBUF);
56 asc_w32(c, IFXMIPS_ASC_TBUF);
57 local_irq_restore(flags);
61 prom_printf(const char * fmt, ...)
68 l = vsprintf(buf, fmt, args);
72 for(p = buf; p < buf_end; p++)
76 unsigned int *prom_get_cp1_base(void)
81 unsigned int prom_get_cp1_size(void)
90 char **argv = (char **) fw_arg1;
91 char **envp = (char **) fw_arg2;
96 mips_machtype = MACH_INFINEON_IFXMIPS;
98 argv = (char**)KSEG1ADDR((unsigned long)argv);
99 arcs_cmdline[0] = '\0';
100 for(i = 1; i < argc; i++)
102 char *a = (char*)KSEG1ADDR(argv[i]);
105 if(strlen(arcs_cmdline) + strlen(a + 1) >= sizeof(arcs_cmdline))
107 strcat(arcs_cmdline, a);
108 strcat(arcs_cmdline, " ");
111 envp = (char**)KSEG1ADDR((unsigned long)envp);
114 char *e = (char*)KSEG1ADDR(*envp);
116 if(!strncmp(e, "memsize=", 8))
119 memsize = simple_strtoul(e, NULL, 10);
125 memsize -= prom_cp1_size;
126 prom_cp1_base = (unsigned int*)(0xA0000000 + (memsize * 1024 * 1024));
128 prom_printf(KERN_INFO "Using %dMB Ram and reserving %dMB for cp1\n",
129 memsize, prom_cp1_size);
130 memsize *= 1024 * 1024;
133 strcpy(&(arcs_cmdline[0]),
134 "console=ttyS0,115200 rootfstype=squashfs,jffs2 init=/etc/preinit");
136 add_memory_region(0x00000000, memsize, BOOT_MEM_RAM);