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cb14e93b KG |
1 | /* |
2 | * Copyright 2009-2010 Freescale Semiconductor, Inc. | |
3 | * | |
1a459660 | 4 | * SPDX-License-Identifier: GPL-2.0+ |
cb14e93b KG |
5 | */ |
6 | ||
7 | #include <common.h> | |
8 | #include <ns16550.h> | |
9 | #include <asm/io.h> | |
10 | #include <nand.h> | |
11 | ||
12 | u32 sysclk_tbl[] = { | |
13 | 33333000, 39999600, 49999500, 66666000, | |
14 | 83332500, 99999000, 133332000, 166665000 | |
15 | }; | |
16 | ||
17 | void board_init_f(ulong bootflag) | |
18 | { | |
19 | int px_spd; | |
20 | u32 plat_ratio, bus_clk, sys_clk; | |
21 | ccsr_gur_t *gur = (void *)CONFIG_SYS_MPC85xx_GUTS_ADDR; | |
22 | ||
23 | #if defined(CONFIG_SYS_BR3_PRELIM) && defined(CONFIG_SYS_OR3_PRELIM) | |
24 | /* for FPGA */ | |
25 | set_lbc_br(3, CONFIG_SYS_BR3_PRELIM); | |
26 | set_lbc_or(3, CONFIG_SYS_OR3_PRELIM); | |
27 | #else | |
28 | #error CONFIG_SYS_BR3_PRELIM, CONFIG_SYS_OR3_PRELIM must be defined | |
29 | #endif | |
30 | ||
31 | /* initialize selected port with appropriate baud rate */ | |
32 | px_spd = in_8((unsigned char *)(PIXIS_BASE + PIXIS_SPD)); | |
33 | sys_clk = sysclk_tbl[px_spd & PIXIS_SPD_SYSCLK_MASK]; | |
34 | plat_ratio = in_be32(&gur->porpllsr) & MPC85xx_PORPLLSR_PLAT_RATIO; | |
35 | bus_clk = sys_clk * plat_ratio / 2; | |
36 | ||
37 | NS16550_init((NS16550_t)CONFIG_SYS_NS16550_COM1, | |
38 | bus_clk / 16 / CONFIG_BAUDRATE); | |
39 | ||
40 | puts("\nNAND boot... "); | |
41 | ||
42 | /* copy code to RAM and jump to it - this should not return */ | |
43 | /* NOTE - code has to be copied out of NAND buffer before | |
44 | * other blocks can be read. | |
45 | */ | |
46 | relocate_code(CONFIG_SYS_NAND_U_BOOT_RELOC_SP, 0, | |
47 | CONFIG_SYS_NAND_U_BOOT_RELOC); | |
48 | } | |
49 | ||
50 | void board_init_r(gd_t *gd, ulong dest_addr) | |
51 | { | |
52 | nand_boot(); | |
53 | } | |
54 | ||
55 | void putc(char c) | |
56 | { | |
57 | if (c == '\n') | |
58 | NS16550_putc((NS16550_t)CONFIG_SYS_NS16550_COM1, '\r'); | |
59 | ||
60 | NS16550_putc((NS16550_t)CONFIG_SYS_NS16550_COM1, c); | |
61 | } | |
62 | ||
63 | void puts(const char *str) | |
64 | { | |
65 | while (*str) | |
66 | putc(*str++); | |
67 | } |