projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| d2912cb1 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
| 59d13f9d BD |
2 | /* |
| 3 | * RedBoot firmware support | |
| 4 | * | |
| 5 | * Author: Scott Wood <scottwood@freescale.com> | |
| 6 | * | |
| 7 | * Copyright (c) 2007 Freescale Semiconductor, Inc. | |
| 8 | * Copyright (c) 2008 Codehermit | |
| 59d13f9d BD |
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_memsize); | |
| 27 | dt_fixup_mac_addresses(bd.bi_enetaddr); | |
| 28 | dt_fixup_cpu_clocks(bd.bi_intfreq, bd.bi_busfreq / 16, bd.bi_busfreq); | |
| 29 | ||
| 30 | node = finddevice("/soc/cpm/brg"); | |
| 31 | if (node) { | |
| 32 | printf("BRG clock-frequency <- 0x%x (%dMHz)\r\n", | |
| 33 | bd.bi_busfreq, MHZ(bd.bi_busfreq)); | |
| 34 | setprop(node, "clock-frequency", &bd.bi_busfreq, 4); | |
| 35 | } | |
| 36 | ||
| 37 | } | |
| 38 | ||
| 39 | void platform_init(unsigned long r3, unsigned long r4, unsigned long r5, | |
| 40 | unsigned long r6, unsigned long r7) | |
| 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.bi_memsize - (unsigned long)_end, | |
| 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_cmdline; | |
| 56 | loader_info.cmdline_len = strlen((char *)bd.bi_cmdline); | |
| 57 | } |