1*d2912cb1SThomas Gleixner // SPDX-License-Identifier: GPL-2.0-only
2b09c1644SScott Wood /*
3b09c1644SScott Wood * RedBoot firmware support
4b09c1644SScott Wood *
5b09c1644SScott Wood * Author: Scott Wood <scottwood@freescale.com>
6b09c1644SScott Wood *
7b09c1644SScott Wood * Copyright (c) 2007 Freescale Semiconductor, Inc.
8b09c1644SScott Wood */
9b09c1644SScott Wood
10b09c1644SScott Wood #include "ops.h"
11b09c1644SScott Wood #include "stdio.h"
12b09c1644SScott Wood #include "redboot.h"
13b09c1644SScott Wood #include "fsl-soc.h"
14b09c1644SScott Wood #include "io.h"
15b09c1644SScott Wood
16b09c1644SScott Wood static bd_t bd;
17b09c1644SScott Wood BSS_STACK(4096);
18b09c1644SScott Wood
19b09c1644SScott Wood #define MHZ(x) ((x + 500000) / 1000000)
20b09c1644SScott Wood
platform_fixups(void)21b09c1644SScott Wood static void platform_fixups(void)
22b09c1644SScott Wood {
23b09c1644SScott Wood void *node;
24b09c1644SScott Wood
25b09c1644SScott Wood dt_fixup_memory(bd.bi_memstart, bd.bi_memsize);
26b09c1644SScott Wood dt_fixup_mac_addresses(bd.bi_enetaddr);
27b09c1644SScott Wood dt_fixup_cpu_clocks(bd.bi_intfreq, bd.bi_busfreq / 16, bd.bi_busfreq);
28b09c1644SScott Wood
29b09c1644SScott Wood node = finddevice("/soc/cpm/brg");
30b09c1644SScott Wood if (node) {
31b09c1644SScott Wood printf("BRG clock-frequency <- 0x%x (%dMHz)\r\n",
32b09c1644SScott Wood bd.bi_busfreq, MHZ(bd.bi_busfreq));
33b09c1644SScott Wood setprop(node, "clock-frequency", &bd.bi_busfreq, 4);
34b09c1644SScott Wood }
35b09c1644SScott Wood }
36b09c1644SScott Wood
platform_init(unsigned long r3,unsigned long r4,unsigned long r5,unsigned long r6,unsigned long r7)37b09c1644SScott Wood void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
38b09c1644SScott Wood unsigned long r6, unsigned long r7)
39b09c1644SScott Wood {
40b09c1644SScott Wood memcpy(&bd, (char *)r3, sizeof(bd));
41b09c1644SScott Wood
42b09c1644SScott Wood if (bd.bi_tag != 0x42444944)
43b09c1644SScott Wood return;
44b09c1644SScott Wood
45b09c1644SScott Wood simple_alloc_init(_end,
46b09c1644SScott Wood bd.bi_memstart + bd.bi_memsize - (unsigned long)_end,
47b09c1644SScott Wood 32, 64);
48b09c1644SScott Wood
49b09c1644SScott Wood fdt_init(_dtb_start);
50b09c1644SScott Wood serial_console_init();
51b09c1644SScott Wood platform_ops.fixups = platform_fixups;
52b09c1644SScott Wood
53b09c1644SScott Wood loader_info.cmdline = (char *)bd.bi_cmdline;
54b09c1644SScott Wood loader_info.cmdline_len = strlen((char *)bd.bi_cmdline);
55b09c1644SScott Wood }
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