+++ /dev/null
-/*
- * Copyright (c) 2011 The Chromium OS Authors.
- *
- * (C) Copyright 2002-2006
- * 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
- */
-
-/*
- * This file was taken from ARM and changed to remove things we don't
- * need. This is most of it, so have tried to avoid being over-zealous!
- * For example, we want to have an emulation of the 'DRAM' used by
- * U-Boot.
- *
- * has been talk upstream of unifying the architectures w.r.t board.c,
- * so the less change here the better.
- */
-
-#include <common.h>
-#include <command.h>
-#include <malloc.h>
-#include <stdio_dev.h>
-#include <timestamp.h>
-#include <version.h>
-#include <serial.h>
-
-#include <os.h>
-
-DECLARE_GLOBAL_DATA_PTR;
-
-static gd_t gd_mem;
-
-/************************************************************************
- * Init Utilities *
- ************************************************************************
- * Some of this code should be moved into the core functions,
- * or dropped completely,
- * but let's get it working (again) first...
- */
-
-static int display_banner(void)
-{
- display_options();
-
- return 0;
-}
-
-/**
- * Configure and report on the DRAM configuration, which in our case is
- * fairly simple.
- */
-static int display_dram_config(void)
-{
- ulong size = 0;
- int i;
-
- debug("RAM Configuration:\n");
-
- for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
-#ifdef DEBUG
- printf("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start);
- print_size(gd->bd->bi_dram[i].size, "\n");
-#endif
- size += gd->bd->bi_dram[i].size;
- }
- puts("DRAM: ");
- print_size(size, "\n");
- return 0;
-}
-
-/*
- * Breathe some life into the board...
- *
- * Initialize a serial port as console, and carry out some hardware
- * tests.
- *
- * The first part of initialization is running from Flash memory;
- * its main purpose is to initialize the RAM so that we
- * can relocate the monitor code to RAM.
- */
-
-/*
- * All attempts to come up with a "common" initialization sequence
- * that works for all boards and architectures failed: some of the
- * requirements are just _too_ different. To get rid of the resulting
- * mess of board dependent #ifdef'ed code we now make the whole
- * initialization sequence configurable to the user.
- *
- * The requirements for any new initalization function is simple: it
- * receives a pointer to the "global data" structure as it's only
- * argument, and returns an integer return code, where 0 means
- * "continue" and != 0 means "fatal error, hang the system".
- */
-typedef int (init_fnc_t) (void);
-
-void __dram_init_banksize(void)
-{
- gd->bd->bi_dram[0].start = 0;
- gd->bd->bi_dram[0].size = gd->ram_size;
-}
-
-void dram_init_banksize(void)
- __attribute__((weak, alias("__dram_init_banksize")));
-
-init_fnc_t *init_sequence[] = {
-#if defined(CONFIG_ARCH_CPU_INIT)
- arch_cpu_init, /* basic arch cpu dependent setup */
-#endif
-#if defined(CONFIG_BOARD_EARLY_INIT_F)
- board_early_init_f,
-#endif
- timer_init, /* initialize timer */
- env_init, /* initialize environment */
- serial_init, /* serial communications setup */
- console_init_f, /* stage 1 init of console */
- sandbox_early_getopt_check, /* process command line flags (err/help) */
- display_banner, /* say that we are here */
-#if defined(CONFIG_DISPLAY_CPUINFO)
- print_cpuinfo, /* display cpu info (and speed) */
-#endif
-#if defined(CONFIG_DISPLAY_BOARDINFO)
- checkboard, /* display board info */
-#endif
- dram_init, /* configure available RAM banks */
- NULL,
-};
-
-void board_init_f(ulong bootflag)
-{
- init_fnc_t **init_fnc_ptr;
- uchar *mem;
- unsigned long addr_sp, addr, size;
-
- gd = &gd_mem;
- assert(gd);
-
- memset((void *)gd, 0, sizeof(gd_t));
-
-#if defined(CONFIG_OF_EMBED)
- /* Get a pointer to the FDT */
- gd->fdt_blob = _binary_dt_dtb_start;
-#elif defined(CONFIG_OF_SEPARATE)
- /* FDT is at end of image */
- gd->fdt_blob = (void *)(_end_ofs + _TEXT_BASE);
-#endif
-
- for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
- if ((*init_fnc_ptr)() != 0)
- hang();
- }
-
- size = CONFIG_SYS_SDRAM_SIZE;
- mem = os_malloc(CONFIG_SYS_SDRAM_SIZE);
-
- assert(mem);
- gd->arch.ram_buf = mem;
- addr = (ulong)(mem + size);
-
- /*
- * reserve memory for malloc() arena
- */
- addr_sp = addr - TOTAL_MALLOC_LEN;
- debug("Reserving %dk for malloc() at: %08lx\n",
- TOTAL_MALLOC_LEN >> 10, addr_sp);
- /*
- * (permanently) allocate a Board Info struct
- * and a permanent copy of the "global" data
- */
- addr_sp -= sizeof(bd_t);
- gd->bd = (bd_t *) addr_sp;
- debug("Reserving %zu Bytes for Board Info at: %08lx\n",
- sizeof(bd_t), addr_sp);
-
- /* Ram ist board specific, so move it to board code ... */
- dram_init_banksize();
- display_dram_config(); /* and display it */
-
- /* We don't relocate, so just run the post-relocation code */
- board_init_r(NULL, 0);
-
- /* NOTREACHED - no way out of command loop except booting */
-}
-
-/************************************************************************
- *
- * This is the next part if the initialization sequence: we are now
- * running from RAM and have a "normal" C environment, i. e. global
- * data can be written, BSS has been cleared, the stack size in not
- * that critical any more, etc.
- *
- ************************************************************************
- */
-
-void board_init_r(gd_t *id, ulong dest_addr)
-{
-
- if (id)
- gd = id;
-
- gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
-
- serial_initialize();
-
-#ifdef CONFIG_POST
- post_output_backlog();
-#endif
-
- /* The Malloc area is at the top of simulated DRAM */
- mem_malloc_init((ulong)gd->arch.ram_buf + gd->ram_size -
- TOTAL_MALLOC_LEN, TOTAL_MALLOC_LEN);
-
- /* initialize environment */
- env_relocate();
-
- stdio_init(); /* get the devices list going. */
-
- jumptable_init();
-
- console_init_r(); /* fully init console as a device */
-
-#if defined(CONFIG_DISPLAY_BOARDINFO_LATE)
- checkboard();
-#endif
-
-#if defined(CONFIG_ARCH_MISC_INIT)
- /* miscellaneous arch dependent initialisations */
- arch_misc_init();
-#endif
-#if defined(CONFIG_MISC_INIT_R)
- /* miscellaneous platform dependent initialisations */
- misc_init_r();
-#endif
-
- /* set up exceptions */
- interrupt_init();
- /* enable exceptions */
- enable_interrupts();
-
-#ifdef CONFIG_BOARD_LATE_INIT
- board_late_init();
-#endif
-
-#ifdef CONFIG_POST
- post_run(NULL, POST_RAM | post_bootmode_get(0));
-#endif
-
- sandbox_main_loop_init();
-
- /*
- * For now, run the main loop. Later we might let this be done
- * in the main program.
- */
- while (1)
- main_loop();
-
- /* NOTREACHED - no way out of command loop except booting */
-}
-
-void hang(void)
-{
- puts("### ERROR ### Please RESET the board ###\n");
- for (;;)
- ;
-}
projects / karo-tx-uboot.git / blobdiff