1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-only
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * RedBoot firmware support
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * Author: Scott Wood <scottwood@freescale.com>
6*4882a593Smuzhiyun *
7*4882a593Smuzhiyun * Copyright (c) 2007 Freescale Semiconductor, Inc.
8*4882a593Smuzhiyun */
9*4882a593Smuzhiyun
10*4882a593Smuzhiyun #include "ops.h"
11*4882a593Smuzhiyun #include "stdio.h"
12*4882a593Smuzhiyun #include "redboot.h"
13*4882a593Smuzhiyun #include "fsl-soc.h"
14*4882a593Smuzhiyun #include "io.h"
15*4882a593Smuzhiyun
16*4882a593Smuzhiyun static bd_t bd;
17*4882a593Smuzhiyun BSS_STACK(4096);
18*4882a593Smuzhiyun
19*4882a593Smuzhiyun #define MHZ(x) ((x + 500000) / 1000000)
20*4882a593Smuzhiyun
platform_fixups(void)21*4882a593Smuzhiyun static void platform_fixups(void)
22*4882a593Smuzhiyun {
23*4882a593Smuzhiyun void *node;
24*4882a593Smuzhiyun
25*4882a593Smuzhiyun dt_fixup_memory(bd.bi_memstart, bd.bi_memsize);
26*4882a593Smuzhiyun dt_fixup_mac_addresses(bd.bi_enetaddr);
27*4882a593Smuzhiyun dt_fixup_cpu_clocks(bd.bi_intfreq, bd.bi_busfreq / 16, bd.bi_busfreq);
28*4882a593Smuzhiyun
29*4882a593Smuzhiyun node = finddevice("/soc/cpm/brg");
30*4882a593Smuzhiyun if (node) {
31*4882a593Smuzhiyun printf("BRG clock-frequency <- 0x%x (%dMHz)\r\n",
32*4882a593Smuzhiyun bd.bi_busfreq, MHZ(bd.bi_busfreq));
33*4882a593Smuzhiyun setprop(node, "clock-frequency", &bd.bi_busfreq, 4);
34*4882a593Smuzhiyun }
35*4882a593Smuzhiyun }
36*4882a593Smuzhiyun
platform_init(unsigned long r3,unsigned long r4,unsigned long r5,unsigned long r6,unsigned long r7)37*4882a593Smuzhiyun void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
38*4882a593Smuzhiyun unsigned long r6, unsigned long r7)
39*4882a593Smuzhiyun {
40*4882a593Smuzhiyun memcpy(&bd, (char *)r3, sizeof(bd));
41*4882a593Smuzhiyun
42*4882a593Smuzhiyun if (bd.bi_tag != 0x42444944)
43*4882a593Smuzhiyun return;
44*4882a593Smuzhiyun
45*4882a593Smuzhiyun simple_alloc_init(_end,
46*4882a593Smuzhiyun bd.bi_memstart + bd.bi_memsize - (unsigned long)_end,
47*4882a593Smuzhiyun 32, 64);
48*4882a593Smuzhiyun
49*4882a593Smuzhiyun fdt_init(_dtb_start);
50*4882a593Smuzhiyun serial_console_init();
51*4882a593Smuzhiyun platform_ops.fixups = platform_fixups;
52*4882a593Smuzhiyun
53*4882a593Smuzhiyun loader_info.cmdline = (char *)bd.bi_cmdline;
54*4882a593Smuzhiyun loader_info.cmdline_len = strlen((char *)bd.bi_cmdline);
55*4882a593Smuzhiyun }
56