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57 lines
1.3 KiB
57 lines
1.3 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* RedBoot firmware support |
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* |
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* Author: Scott Wood <[email protected]> |
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* |
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* Copyright (c) 2007 Freescale Semiconductor, Inc. |
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* Copyright (c) 2008 Codehermit |
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*/ |
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#include "ops.h" |
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#include "stdio.h" |
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#include "redboot.h" |
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#include "fsl-soc.h" |
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#include "io.h" |
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static bd_t bd; |
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BSS_STACK(4096); |
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#define MHZ(x) ((x + 500000) / 1000000) |
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static void platform_fixups(void) |
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{ |
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void *node; |
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dt_fixup_memory(bd.bi_memstart, bd.bi_memsize); |
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dt_fixup_mac_addresses(bd.bi_enetaddr); |
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dt_fixup_cpu_clocks(bd.bi_intfreq, bd.bi_busfreq / 16, bd.bi_busfreq); |
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node = finddevice("/soc/cpm/brg"); |
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if (node) { |
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printf("BRG clock-frequency <- 0x%x (%dMHz)\r\n", |
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bd.bi_busfreq, MHZ(bd.bi_busfreq)); |
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setprop(node, "clock-frequency", &bd.bi_busfreq, 4); |
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} |
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} |
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void platform_init(unsigned long r3, unsigned long r4, unsigned long r5, |
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unsigned long r6, unsigned long r7) |
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{ |
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memcpy(&bd, (char *)r3, sizeof(bd)); |
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if (bd.bi_tag != 0x42444944) |
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return; |
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simple_alloc_init(_end, |
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bd.bi_memstart + bd.bi_memsize - (unsigned long)_end, |
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32, 64); |
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fdt_init(_dtb_start); |
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serial_console_init(); |
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platform_ops.fixups = platform_fixups; |
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loader_info.cmdline = (char *)bd.bi_cmdline; |
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loader_info.cmdline_len = strlen((char *)bd.bi_cmdline); |
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}
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