1 // SPDX-License-Identifier: GPL-2.0-only 1
2 /*
3 * RedBoot firmware support
4 *
5 * Author: Scott Wood <scottwood@freescale.com
6 *
7 * Copyright (c) 2007 Freescale Semiconductor,
8 * Copyright (c) 2008 Codehermit
9 */
10
11 #include "ops.h"
12 #include "stdio.h"
13 #include "redboot.h"
14 #include "fsl-soc.h"
15 #include "io.h"
16
17 static bd_t bd;
18 BSS_STACK(4096);
19
20 #define MHZ(x) ((x + 500000) / 1000000)
21
22 static void platform_fixups(void)
23 {
24 void *node;
25
26 dt_fixup_memory(bd.bi_memstart, bd.bi_
27 dt_fixup_mac_addresses(bd.bi_enetaddr)
28 dt_fixup_cpu_clocks(bd.bi_intfreq, bd.
29
30 node = finddevice("/soc/cpm/brg");
31 if (node) {
32 printf("BRG clock-frequency <-
33 bd.bi_busfreq, MHZ(bd.b
34 setprop(node, "clock-frequency
35 }
36
37 }
38
39 void platform_init(unsigned long r3, unsigned
40 unsigned long r6, unsigned
41 {
42 memcpy(&bd, (char *)r3, sizeof(bd));
43
44 if (bd.bi_tag != 0x42444944)
45 return;
46
47 simple_alloc_init(_end,
48 bd.bi_memstart + bd.
49 32, 64);
50
51 fdt_init(_dtb_start);
52 serial_console_init();
53 platform_ops.fixups = platform_fixups;
54
55 loader_info.cmdline = (char *)bd.bi_cm
56 loader_info.cmdline_len = strlen((char
57 }
58
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