1 /* 2 * Old U-boot compatibility for 85xx 3 * 4 * Author: Scott Wood <scottwood@freescale.com> 5 * 6 * Copyright (c) 2007 Freescale Semiconductor, Inc. 7 * 8 * This program is free software; you can redistribute it and/or modify it 9 * under the terms of the GNU General Public License version 2 as published 10 * by the Free Software Foundation. 11 */ 12 13 #include "ops.h" 14 #include "stdio.h" 15 16 #define TARGET_85xx 17 #include "ppcboot.h" 18 19 static bd_t bd; 20 extern char _end[]; 21 extern char _dtb_start[], _dtb_end[]; 22 23 static void platform_fixups(void) 24 { 25 void *soc; 26 27 dt_fixup_memory(bd.bi_memstart, bd.bi_memsize); 28 dt_fixup_mac_addresses(bd.bi_enetaddr, bd.bi_enet1addr, 29 bd.bi_enet2addr); 30 dt_fixup_cpu_clocks(bd.bi_intfreq, bd.bi_busfreq / 8, bd.bi_busfreq); 31 32 /* Unfortunately, the specific model number is encoded in the 33 * soc node name in existing dts files -- once that is fixed, 34 * this can do a simple path lookup. 35 */ 36 soc = find_node_by_devtype(NULL, "soc"); 37 if (soc) { 38 void *serial = NULL; 39 40 setprop(soc, "bus-frequency", &bd.bi_busfreq, 41 sizeof(bd.bi_busfreq)); 42 43 while ((serial = find_node_by_devtype(serial, "serial"))) { 44 if (get_parent(serial) != soc) 45 continue; 46 47 setprop(serial, "clock-frequency", &bd.bi_busfreq, 48 sizeof(bd.bi_busfreq)); 49 } 50 } 51 } 52 53 void platform_init(unsigned long r3, unsigned long r4, unsigned long r5, 54 unsigned long r6, unsigned long r7) 55 { 56 unsigned long end_of_ram = bd.bi_memstart + bd.bi_memsize; 57 unsigned long avail_ram = end_of_ram - (unsigned long)_end; 58 59 memcpy(&bd, (bd_t *)r3, sizeof(bd)); 60 loader_info.initrd_addr = r4; 61 loader_info.initrd_size = r4 ? r5 - r4 : 0; 62 loader_info.cmdline = (char *)r6; 63 loader_info.cmdline_len = r7 - r6; 64 65 simple_alloc_init(_end, avail_ram - 1024*1024, 32, 64); 66 ft_init(_dtb_start, _dtb_end - _dtb_start, 32); 67 serial_console_init(); 68 platform_ops.fixups = platform_fixups; 69 } 70