/* * RedBoot firmware support * * Author: Scott Wood <scottwood@freescale.com> * * Copyright (c) 2007 Freescale Semiconductor, Inc. * Copyright (c) 2008 Codehermit * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 as published * by the Free Software Foundation. */ #include "ops.h" #include "stdio.h" #include "redboot.h" #include "fsl-soc.h" #include "io.h" static bd_t bd; BSS_STACK(4096); #define MHZ(x) ((x + 500000) / 1000000) static void platform_fixups(void) { void *node; dt_fixup_memory(bd.bi_memstart, bd.bi_memsize); dt_fixup_mac_addresses(bd.bi_enetaddr); dt_fixup_cpu_clocks(bd.bi_intfreq, bd.bi_busfreq / 16, bd.bi_busfreq); node = finddevice("/soc/cpm/brg"); if (node) { printf("BRG clock-frequency <- 0x%x (%dMHz)\r\n", bd.bi_busfreq, MHZ(bd.bi_busfreq)); setprop(node, "clock-frequency", &bd.bi_busfreq, 4); } } void platform_init(unsigned long r3, unsigned long r4, unsigned long r5, unsigned long r6, unsigned long r7) { memcpy(&bd, (char *)r3, sizeof(bd)); if (bd.bi_tag != 0x42444944) return; simple_alloc_init(_end, bd.bi_memstart + bd.bi_memsize - (unsigned long)_end, 32, 64); fdt_init(_dtb_start); serial_console_init(); platform_ops.fixups = platform_fixups; loader_info.cmdline = (char *)bd.bi_cmdline; loader_info.cmdline_len = strlen((char *)bd.bi_cmdline); }