projects / linux-2.6 / blame
| Commit | Line | Data |
|---|---|---|
| 5cc5133a SW |
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 | ||
| 173ba87b | 64 | simple_alloc_init(_end, avail_ram - 1024*1024, 32, 64); |
| 5cc5133a SW |
65 | ft_init(_dtb_start, _dtb_end - _dtb_start, 32); |
| 66 | serial_console_init(); | |
| 67 | platform_ops.fixups = platform_fixups; | |
| 68 | } |