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Diffstat (limited to 'arch/x86/lib/board.c')
| -rw-r--r-- | arch/x86/lib/board.c | 266 |
1 files changed, 0 insertions, 266 deletions
diff --git a/arch/x86/lib/board.c b/arch/x86/lib/board.c deleted file mode 100644 index 228c2c822..000000000 --- a/arch/x86/lib/board.c +++ /dev/null @@ -1,266 +0,0 @@ -/* - * (C) Copyright 2008-2011 - * Graeme Russ, <graeme.russ@gmail.com> - * - * (C) Copyright 2002 - * Daniel Engström, Omicron Ceti AB, <daniel@omicron.se> - * - * (C) Copyright 2002 - * Wolfgang Denk, DENX Software Engineering, <wd@denx.de> - * - * (C) Copyright 2002 - * Sysgo Real-Time Solutions, GmbH <www.elinos.com> - * Marius Groeger <mgroeger@sysgo.de> - * - * See file CREDITS for list of people who contributed to this - * project. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of - * the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, - * MA 02111-1307 USA - */ - -#include <common.h> -#include <fdtdec.h> -#include <watchdog.h> -#include <stdio_dev.h> -#include <asm/u-boot-x86.h> -#include <asm/relocate.h> -#include <asm/processor.h> -#include <asm/sections.h> - -#include <asm/init_helpers.h> -#include <asm/init_wrappers.h> - -/* - * Breath some life into the board... - * - * Getting the board up and running is a three-stage process: - * 1) Execute from Flash, SDRAM Uninitialised - * At this point, there is a limited amount of non-SDRAM memory - * (typically the CPU cache, but can also be SRAM or even a buffer of - * of some peripheral). This limited memory is used to hold: - * - The initial copy of the Global Data Structure - * - A temporary stack - * - A temporary x86 Global Descriptor Table - * - The pre-console buffer (if enabled) - * - * The following is performed during this phase of execution: - * - Core low-level CPU initialisation - * - Console initialisation - * - SDRAM initialisation - * - * 2) Execute from Flash, SDRAM Initialised - * At this point we copy Global Data from the initial non-SDRAM - * memory and set up the permanent stack in SDRAM. The CPU cache is no - * longer being used as temporary memory, so we can now fully enable - * it. - * - * The following is performed during this phase of execution: - * - Create final stack in SDRAM - * - Copy Global Data from temporary memory to SDRAM - * - Enabling of CPU cache(s), - * - Copying of U-Boot code and data from Flash to RAM - * - Clearing of the BSS - * - ELF relocation adjustments - * - * 3) Execute from SDRAM - * The following is performed during this phase of execution: - * - All remaining initialisation - */ - -/* - * The requirements for any new initalization function is simple: it is - * a function with no parameters which returns an integer return code, - * where 0 means "continue" and != 0 means "fatal error, hang the system" - */ -typedef int (init_fnc_t) (void); - -/* - * init_sequence_f is the list of init functions which are run when U-Boot - * is executing from Flash with a limited 'C' environment. The following - * limitations must be considered when implementing an '_f' function: - * - 'static' variables are read-only - * - Global Data (gd->xxx) is read/write - * - Stack space is limited - * - * The '_f' sequence must, as a minimum, initialise SDRAM. It _should_ - * also initialise the console (to provide early debug output) - */ -init_fnc_t *init_sequence_f[] = { - cpu_init_f, - board_early_init_f, -#ifdef CONFIG_OF_CONTROL - find_fdt, - fdtdec_check_fdt, -#endif - env_init, - init_baudrate_f, - serial_init, - console_init_f, -#ifdef CONFIG_OF_CONTROL - prepare_fdt, -#endif - dram_init_f, - calculate_relocation_address, - - NULL, -}; - -/* - * init_sequence_f_r is the list of init functions which are run when - * U-Boot is executing from Flash with a semi-limited 'C' environment. - * The following limitations must be considered when implementing an - * '_f_r' function: - * - 'static' variables are read-only - * - Global Data (gd->xxx) is read/write - * - * The '_f_r' sequence must, as a minimum, copy U-Boot to RAM (if - * supported). It _should_, if possible, copy global data to RAM and - * initialise the CPU caches (to speed up the relocation process) - */ -init_fnc_t *init_sequence_f_r[] = { - init_cache_f_r, - copy_uboot_to_ram, - copy_fdt_to_ram, - clear_bss, - do_elf_reloc_fixups, - - NULL, -}; - -/* - * init_sequence_r is the list of init functions which are run when U-Boot - * is executing from RAM with a full 'C' environment. There are no longer - * any limitations which must be considered when implementing an '_r' - * function, (i.e.'static' variables are read/write) - * - * If not already done, the '_r' sequence must copy global data to RAM and - * (should) initialise the CPU caches. - */ -init_fnc_t *init_sequence_r[] = { - set_reloc_flag_r, - init_bd_struct_r, - mem_malloc_init_r, - cpu_init_r, - board_early_init_r, - dram_init, - interrupt_init, - timer_init, - display_banner, - display_dram_config, - serial_initialize_r, -#ifndef CONFIG_SYS_NO_FLASH - flash_init_r, -#endif -#ifdef CONFIG_PCI - pci_init_r, -#endif -#ifdef CONFIG_SPI - init_func_spi, -#endif - env_relocate_r, - stdio_init, - jumptable_init_r, - console_init_r, -#ifdef CONFIG_MISC_INIT_R - misc_init_r, -#endif -#if defined(CONFIG_CMD_KGDB) - kgdb_init_r, -#endif - enable_interrupts_r, -#ifdef CONFIG_STATUS_LED - status_led_set_r, -#endif - set_load_addr_r, -#if defined(CONFIG_CMD_IDE) - ide_init_r, -#endif -#if defined(CONFIG_CMD_SCSI) - scsi_init_r, -#endif -#if defined(CONFIG_CMD_DOC) - doc_init_r, -#endif -#ifdef CONFIG_BITBANGMII - bb_miiphy_init_r, -#endif -#if defined(CONFIG_CMD_NET) - eth_initialize_r, -#ifdef CONFIG_RESET_PHY_R - reset_phy_r, -#endif -#endif -#ifdef CONFIG_LAST_STAGE_INIT - last_stage_init, -#endif - NULL, -}; - -static void do_init_loop(init_fnc_t **init_fnc_ptr) -{ - for (; *init_fnc_ptr; ++init_fnc_ptr) { - WATCHDOG_RESET(); - if ((*init_fnc_ptr)() != 0) - hang(); - } -} - -void board_init_f(ulong boot_flags) -{ - gd->fdt_blob = gd->new_fdt = NULL; - gd->flags = boot_flags; - - do_init_loop(init_sequence_f); - - /* - * SDRAM and console are now initialised. The final stack can now - * be setup in SDRAM. Code execution will continue in Flash, but - * with the stack in SDRAM and Global Data in temporary memory - * (CPU cache) - */ - board_init_f_r_trampoline(gd->start_addr_sp); - - /* NOTREACHED - board_init_f_r_trampoline() does not return */ - while (1) - ; -} - -void board_init_f_r(void) -{ - do_init_loop(init_sequence_f_r); - - /* - * U-Boot has been copied into SDRAM, the BSS has been cleared etc. - * Transfer execution from Flash to RAM by calculating the address - * of the in-RAM copy of board_init_r() and calling it - */ - (board_init_r + gd->reloc_off)(gd, gd->relocaddr); - - /* NOTREACHED - board_init_r() does not return */ - while (1) - ; -} - -void board_init_r(gd_t *id, ulong dest_addr) -{ - do_init_loop(init_sequence_r); - - /* main_loop() can return to retry autoboot, if so just run it again. */ - for (;;) - main_loop(); - - /* NOTREACHED - no way out of command loop except booting */ -} |