]>
Commit | Line | Data |
---|---|---|
f7780ec9 DD |
1 | /* |
2 | * Copyright 2009 Freescale Semiconductor, Inc. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or | |
5 | * modify it under the terms of the GNU General Public License as | |
6 | * published by the Free Software Foundation; either version 2 of | |
7 | * the License, or (at your option) any later version. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * | |
13 | * GNU General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
16 | * along with this program; if not, write to the Free Software | |
17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, | |
18 | * MA 02111-1307 USA | |
19 | * | |
20 | */ | |
21 | #include <common.h> | |
22 | #include <mpc85xx.h> | |
23 | #include <asm-ppc/io.h> | |
24 | #include <ns16550.h> | |
25 | #include <nand.h> | |
26 | #include <asm/mmu.h> | |
27 | #include <asm/immap_85xx.h> | |
28 | #include <asm/fsl_ddr_sdram.h> | |
29 | #include <asm/fsl_law.h> | |
30 | ||
31 | #define SYSCLK_MASK 0x00200000 | |
32 | #define BOARDREV_MASK 0x10100000 | |
33 | #define BOARDREV_B 0x10100000 | |
34 | #define BOARDREV_C 0x00100000 | |
35 | ||
36 | #define SYSCLK_66 66666666 | |
37 | #define SYSCLK_50 50000000 | |
38 | #define SYSCLK_100 100000000 | |
39 | ||
40 | DECLARE_GLOBAL_DATA_PTR; | |
41 | ||
42 | void board_init_f(ulong bootflag) | |
43 | { | |
613ad28c | 44 | uint plat_ratio, bus_clk, sys_clk = 0; |
f7780ec9 DD |
45 | volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR); |
46 | volatile ccsr_gpio_t *pgpio = (void *)(CONFIG_SYS_MPC85xx_GPIO_ADDR); | |
47 | uint val, temp, sysclk_mask; | |
48 | ||
49 | val = pgpio->gpdat; | |
50 | sysclk_mask = val & SYSCLK_MASK; | |
51 | temp = val & BOARDREV_MASK; | |
52 | if (temp == BOARDREV_C) { | |
53 | if(sysclk_mask == 0) | |
54 | sys_clk = SYSCLK_66; | |
55 | else | |
56 | sys_clk = SYSCLK_100; | |
57 | } else if (temp == BOARDREV_B) { | |
58 | if(sysclk_mask == 0) | |
59 | sys_clk = SYSCLK_66; | |
60 | else | |
61 | sys_clk = SYSCLK_50; | |
62 | } | |
63 | ||
64 | plat_ratio = gur->porpllsr & 0x0000003e; | |
65 | plat_ratio >>= 1; | |
66 | bus_clk = plat_ratio * sys_clk; | |
67 | NS16550_init((NS16550_t)CONFIG_SYS_NS16550_COM1, | |
68 | bus_clk / 16 / CONFIG_BAUDRATE); | |
69 | ||
70 | puts("\nNAND boot... "); | |
71 | ||
72 | /* copy code to DDR and jump to it - this should not return */ | |
73 | /* NOTE - code has to be copied out of NAND buffer before | |
74 | * other blocks can be read. | |
75 | */ | |
76 | relocate_code(CONFIG_SYS_NAND_U_BOOT_RELOC_SP, 0, | |
77 | CONFIG_SYS_NAND_U_BOOT_RELOC); | |
78 | } | |
79 | ||
80 | void board_init_r(gd_t *gd, ulong dest_addr) | |
81 | { | |
82 | nand_boot(); | |
83 | } | |
84 | ||
85 | void putc(char c) | |
86 | { | |
87 | if (c == '\n') | |
88 | NS16550_putc((NS16550_t)CONFIG_SYS_NS16550_COM1, '\r'); | |
89 | ||
90 | NS16550_putc((NS16550_t)CONFIG_SYS_NS16550_COM1, c); | |
91 | } | |
92 | ||
93 | void puts(const char *str) | |
94 | { | |
95 | while (*str) | |
96 | putc(*str++); | |
97 | } |