1 /* 2 * Old U-boot compatibility for 83xx 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_83xx 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 dt_fixup_cpu_clocks(bd.bi_intfreq, bd.bi_busfreq / 4, bd.bi_busfreq); 30 31 /* Unfortunately, the specific model number is encoded in the 32 * soc node name in existing dts files -- once that is fixed, 33 * this can do a simple path lookup. 34 */ 35 soc = find_node_by_devtype(NULL, "soc"); 36 if (soc) { 37 void *serial = NULL; 38 39 setprop(soc, "bus-frequency", &bd.bi_busfreq, 40 sizeof(bd.bi_busfreq)); 41 42 while ((serial = find_node_by_devtype(serial, "serial"))) { 43 if (get_parent(serial) != soc) 44 continue; 45 46 setprop(serial, "clock-frequency", &bd.bi_busfreq, 47 sizeof(bd.bi_busfreq)); 48 } 49 } 50 } 51 52 void platform_init(unsigned long r3, unsigned long r4, unsigned long r5, 53 unsigned long r6, unsigned long r7) 54 { 55 unsigned long end_of_ram = bd.bi_memstart + bd.bi_memsize; 56 unsigned long avail_ram = end_of_ram - (unsigned long)_end; 57 58 memcpy(&bd, (bd_t *)r3, sizeof(bd)); 59 loader_info.initrd_addr = r4; 60 loader_info.initrd_size = r4 ? r5 : 0; 61 loader_info.cmdline = (char *)r6; 62 loader_info.cmdline_len = r7 - r6; 63 64 simple_alloc_init(_end, avail_ram - 1024*1024, 32, 64); 65 ft_init(_dtb_start, _dtb_end - _dtb_start, 32); 66 serial_console_init(); 67 platform_ops.fixups = platform_fixups; 68 } 69