3 * Graeme Russ, <graeme.russ@gmail.com>
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
25 #include <stdio_dev.h>
31 #include <status_led.h>
32 #include <asm/processor.h>
33 #include <asm/u-boot-x86.h>
35 #include <asm/init_helpers.h>
37 DECLARE_GLOBAL_DATA_PTR;
39 /************************************************************************
41 ************************************************************************
42 * Some of this code should be moved into the core functions,
43 * or dropped completely,
44 * but let's get it working (again) first...
47 int display_banner(void)
49 printf("\n\n%s\n\n", version_string);
54 int display_dram_config(void)
58 puts("DRAM Configuration:\n");
60 for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
61 printf("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start);
62 print_size(gd->bd->bi_dram[i].size, "\n");
68 int init_baudrate_f(void)
70 gd->baudrate = getenv_ulong("baudrate", 10, CONFIG_BAUDRATE);
74 int calculate_relocation_address(void)
76 ulong text_start = (ulong)&__text_start;
77 ulong bss_end = (ulong)&__bss_end;
81 * NOTE: All destination address are rounded down to 16-byte
82 * boundary to satisfy various worst-case alignment
86 /* Global Data is at top of available memory */
87 dest_addr = gd->ram_size;
88 dest_addr -= GENERATED_GBL_DATA_SIZE;
90 gd->new_gd_addr = dest_addr;
92 /* GDT is below Global Data */
93 dest_addr -= X86_GDT_SIZE;
95 gd->gdt_addr = dest_addr;
97 /* Stack is below GDT */
98 gd->start_addr_sp = dest_addr;
100 /* U-Boot is below the stack */
101 dest_addr -= CONFIG_SYS_STACK_SIZE;
102 dest_addr -= (bss_end - text_start);
104 gd->relocaddr = dest_addr;
105 gd->reloc_off = (dest_addr - text_start);
110 int copy_gd_to_ram_f_r(void)
115 * Global data is still in temporary memory (the CPU cache).
116 * calculate_relocation_address() has set gd->new_gd_addr to
117 * where the global data lives in RAM but getting it there
118 * safely is a bit tricky due to the 'F-Segment Hack' that
119 * we need to use for x86
121 ram_gd = (gd_t *)gd->new_gd_addr;
122 memcpy((void *)ram_gd, gd, sizeof(gd_t));
125 * Reload the Global Descriptor Table so FS points to the
126 * in-RAM copy of Global Data (calculate_relocation_address()
127 * has already calculated the in-RAM location of the GDT)
129 ram_gd->gd_addr = (ulong)ram_gd;
130 init_gd(ram_gd, (u64 *)gd->gdt_addr);
135 int init_cache_f_r(void)
137 /* Initialise the CPU cache(s) */
141 int set_reloc_flag_r(void)
143 gd->flags = GD_FLG_RELOC;
148 int mem_malloc_init_r(void)
150 mem_malloc_init(((gd->relocaddr - CONFIG_SYS_MALLOC_LEN)+3)&~3,
151 CONFIG_SYS_MALLOC_LEN);
158 int init_bd_struct_r(void)
161 memset(gd->bd, 0, sizeof(bd_t));
166 #ifndef CONFIG_SYS_NO_FLASH
167 int flash_init_r(void)
173 /* configure available FLASH banks */
176 print_size(size, "\n");
182 #ifdef CONFIG_STATUS_LED
183 int status_led_set_r(void)
185 status_led_set(STATUS_LED_BOOT, STATUS_LED_BLINKING);
191 int set_load_addr_r(void)
193 /* Initialize from environment */
194 load_addr = getenv_ulong("loadaddr", 16, load_addr);