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https://github.com/brain-hackers/u-boot-brain
synced 2024-09-10 06:43:28 +09:00
![Mike Frysinger](/assets/img/avatar_default.png)
This is long over due. All but two net drivers have been converted, but those have now been dropped. The only thing left to do is actually delete all references to NET_MULTI and code that is compiled when that is not defined. So here we scrub the core code. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
707 lines
17 KiB
C
707 lines
17 KiB
C
/*
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* (C) Copyright 2003
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* Josef Baumgartner <josef.baumgartner@telex.de>
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*
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* (C) Copyright 2000-2002
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <watchdog.h>
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#include <command.h>
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#include <malloc.h>
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#include <stdio_dev.h>
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#include <asm/immap.h>
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#if defined(CONFIG_CMD_IDE)
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#include <ide.h>
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#endif
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#if defined(CONFIG_CMD_SCSI)
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#include <scsi.h>
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#endif
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#if defined(CONFIG_CMD_KGDB)
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#include <kgdb.h>
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#endif
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#ifdef CONFIG_STATUS_LED
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#include <status_led.h>
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#endif
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#include <net.h>
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#include <serial.h>
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#if defined(CONFIG_CMD_BEDBUG)
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#include <cmd_bedbug.h>
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#endif
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#ifdef CONFIG_SYS_ALLOC_DPRAM
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#include <commproc.h>
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#endif
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#include <version.h>
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#if defined(CONFIG_HARD_I2C) || \
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defined(CONFIG_SOFT_I2C)
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#include <i2c.h>
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#endif
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#ifdef CONFIG_CMD_SPI
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#include <spi.h>
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#endif
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#ifdef CONFIG_BITBANGMII
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#include <miiphy.h>
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#endif
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#include <nand.h>
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DECLARE_GLOBAL_DATA_PTR;
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static char *failed = "*** failed ***\n";
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#include <environment.h>
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extern ulong __init_end;
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extern ulong __bss_end__;
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#if defined(CONFIG_WATCHDOG)
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# define INIT_FUNC_WATCHDOG_INIT watchdog_init,
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# define WATCHDOG_DISABLE watchdog_disable
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extern int watchdog_init(void);
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extern int watchdog_disable(void);
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#else
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# define INIT_FUNC_WATCHDOG_INIT /* undef */
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# define WATCHDOG_DISABLE /* undef */
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#endif /* CONFIG_WATCHDOG */
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ulong monitor_flash_len;
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/************************************************************************
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* Utilities *
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************************************************************************
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*/
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/*
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* All attempts to come up with a "common" initialization sequence
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* that works for all boards and architectures failed: some of the
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* requirements are just _too_ different. To get rid of the resulting
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* mess of board dependend #ifdef'ed code we now make the whole
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* initialization sequence configurable to the user.
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*
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* The requirements for any new initalization function is simple: it
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* receives a pointer to the "global data" structure as it's only
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* argument, and returns an integer return code, where 0 means
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* "continue" and != 0 means "fatal error, hang the system".
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*/
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typedef int (init_fnc_t) (void);
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/************************************************************************
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* Init Utilities
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************************************************************************
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* Some of this code should be moved into the core functions,
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* but let's get it working (again) first...
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*/
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static int init_baudrate (void)
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{
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char tmp[64]; /* long enough for environment variables */
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int i = getenv_f("baudrate", tmp, sizeof (tmp));
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gd->baudrate = (i > 0)
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? (int) simple_strtoul (tmp, NULL, 10)
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: CONFIG_BAUDRATE;
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return (0);
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}
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/***********************************************************************/
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static int init_func_ram (void)
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{
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int board_type = 0; /* use dummy arg */
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puts ("DRAM: ");
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if ((gd->ram_size = initdram (board_type)) > 0) {
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print_size (gd->ram_size, "\n");
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return (0);
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}
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puts (failed);
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return (1);
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}
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/***********************************************************************/
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#if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
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static int init_func_i2c (void)
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{
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puts ("I2C: ");
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i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
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puts ("ready\n");
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return (0);
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}
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#endif
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#if defined(CONFIG_HARD_SPI)
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static int init_func_spi (void)
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{
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puts ("SPI: ");
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spi_init ();
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puts ("ready\n");
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return (0);
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}
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#endif
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/***********************************************************************/
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/************************************************************************
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* Initialization sequence *
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************************************************************************
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*/
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init_fnc_t *init_sequence[] = {
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get_clocks,
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env_init,
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init_baudrate,
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serial_init,
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console_init_f,
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display_options,
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checkcpu,
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checkboard,
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#if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
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init_func_i2c,
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#endif
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#if defined(CONFIG_HARD_SPI)
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init_func_spi,
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#endif
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init_func_ram,
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#if defined(CONFIG_SYS_DRAM_TEST)
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testdram,
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#endif /* CONFIG_SYS_DRAM_TEST */
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INIT_FUNC_WATCHDOG_INIT
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NULL, /* Terminate this list */
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};
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/************************************************************************
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*
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* This is the first part of the initialization sequence that is
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* implemented in C, but still running from ROM.
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*
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* The main purpose is to provide a (serial) console interface as
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* soon as possible (so we can see any error messages), and to
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* initialize the RAM so that we can relocate the monitor code to
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* RAM.
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*
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* Be aware of the restrictions: global data is read-only, BSS is not
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* initialized, and stack space is limited to a few kB.
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*
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************************************************************************
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*/
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void
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board_init_f (ulong bootflag)
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{
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bd_t *bd;
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ulong len, addr, addr_sp;
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ulong *paddr;
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gd_t *id;
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init_fnc_t **init_fnc_ptr;
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#ifdef CONFIG_PRAM
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int i;
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ulong reg;
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char tmp[64]; /* long enough for environment variables */
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#endif
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/* Pointer is writable since we allocated a register for it */
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gd = (gd_t *) (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_GBL_DATA_OFFSET);
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/* compiler optimization barrier needed for GCC >= 3.4 */
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__asm__ __volatile__("": : :"memory");
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/* Clear initial global data */
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memset ((void *) gd, 0, sizeof (gd_t));
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for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
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if ((*init_fnc_ptr)() != 0) {
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hang ();
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}
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}
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/*
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* Now that we have DRAM mapped and working, we can
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* relocate the code and continue running from DRAM.
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*
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* Reserve memory at end of RAM for (top down in that order):
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* - protected RAM
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* - LCD framebuffer
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* - monitor code
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* - board info struct
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*/
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len = (ulong)&__bss_end__ - CONFIG_SYS_MONITOR_BASE;
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addr = CONFIG_SYS_SDRAM_BASE + gd->ram_size;
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#ifdef CONFIG_LOGBUFFER
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/* reserve kernel log buffer */
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addr -= (LOGBUFF_RESERVE);
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debug ("Reserving %dk for kernel logbuffer at %08lx\n", LOGBUFF_LEN, addr);
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#endif
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#ifdef CONFIG_PRAM
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/*
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* reserve protected RAM
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*/
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i = getenv_f("pram", tmp, sizeof (tmp));
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reg = (i > 0) ? simple_strtoul (tmp, NULL, 10) : CONFIG_PRAM;
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addr -= (reg << 10); /* size is in kB */
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debug ("Reserving %ldk for protected RAM at %08lx\n", reg, addr);
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#endif /* CONFIG_PRAM */
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/* round down to next 4 kB limit */
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addr &= ~(4096 - 1);
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debug ("Top of RAM usable for U-Boot at: %08lx\n", addr);
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#ifdef CONFIG_LCD
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#ifdef CONFIG_FB_ADDR
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gd->fb_base = CONFIG_FB_ADDR;
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#else
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/* reserve memory for LCD display (always full pages) */
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addr = lcd_setmem (addr);
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gd->fb_base = addr;
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#endif /* CONFIG_FB_ADDR */
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#endif /* CONFIG_LCD */
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/*
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* reserve memory for U-Boot code, data & bss
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* round down to next 4 kB limit
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*/
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addr -= len;
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addr &= ~(4096 - 1);
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debug ("Reserving %ldk for U-Boot at: %08lx\n", len >> 10, addr);
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/*
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* reserve memory for malloc() arena
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*/
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addr_sp = addr - TOTAL_MALLOC_LEN;
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debug ("Reserving %dk for malloc() at: %08lx\n",
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TOTAL_MALLOC_LEN >> 10, addr_sp);
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/*
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* (permanently) allocate a Board Info struct
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* and a permanent copy of the "global" data
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*/
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addr_sp -= sizeof (bd_t);
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bd = (bd_t *) addr_sp;
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gd->bd = bd;
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debug ("Reserving %zu Bytes for Board Info at: %08lx\n",
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sizeof (bd_t), addr_sp);
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addr_sp -= sizeof (gd_t);
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id = (gd_t *) addr_sp;
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debug ("Reserving %zu Bytes for Global Data at: %08lx\n",
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sizeof (gd_t), addr_sp);
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/* Reserve memory for boot params. */
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addr_sp -= CONFIG_SYS_BOOTPARAMS_LEN;
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bd->bi_boot_params = addr_sp;
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debug ("Reserving %dk for boot parameters at: %08lx\n",
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CONFIG_SYS_BOOTPARAMS_LEN >> 10, addr_sp);
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/*
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* Finally, we set up a new (bigger) stack.
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*
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* Leave some safety gap for SP, force alignment on 16 byte boundary
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* Clear initial stack frame
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*/
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addr_sp -= 16;
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addr_sp &= ~0xF;
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paddr = (ulong *)addr_sp;
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*paddr-- = 0;
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*paddr-- = 0;
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addr_sp = (ulong)paddr;
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debug ("Stack Pointer at: %08lx\n", addr_sp);
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/*
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* Save local variables to board info struct
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*/
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bd->bi_memstart = CONFIG_SYS_SDRAM_BASE; /* start of DRAM memory */
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bd->bi_memsize = gd->ram_size; /* size of DRAM memory in bytes */
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#ifdef CONFIG_SYS_INIT_RAM_ADDR
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bd->bi_sramstart = CONFIG_SYS_INIT_RAM_ADDR; /* start of SRAM memory */
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bd->bi_sramsize = CONFIG_SYS_INIT_RAM_SIZE; /* size of SRAM memory */
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#endif
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bd->bi_mbar_base = CONFIG_SYS_MBAR; /* base of internal registers */
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bd->bi_bootflags = bootflag; /* boot / reboot flag (for LynxOS) */
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WATCHDOG_RESET ();
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bd->bi_intfreq = gd->cpu_clk; /* Internal Freq, in Hz */
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bd->bi_busfreq = gd->bus_clk; /* Bus Freq, in Hz */
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#ifdef CONFIG_PCI
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bd->bi_pcifreq = gd->pci_clk; /* PCI Freq in Hz */
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#endif
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#ifdef CONFIG_EXTRA_CLOCK
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bd->bi_inpfreq = gd->inp_clk; /* input Freq in Hz */
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bd->bi_vcofreq = gd->vco_clk; /* vco Freq in Hz */
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bd->bi_flbfreq = gd->flb_clk; /* flexbus Freq in Hz */
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#endif
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bd->bi_baudrate = gd->baudrate; /* Console Baudrate */
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#ifdef CONFIG_SYS_EXTBDINFO
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strncpy (bd->bi_s_version, "1.2", sizeof (bd->bi_s_version));
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strncpy (bd->bi_r_version, U_BOOT_VERSION, sizeof (bd->bi_r_version));
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#endif
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WATCHDOG_RESET ();
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#ifdef CONFIG_POST
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post_bootmode_init();
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post_run (NULL, POST_ROM | post_bootmode_get(0));
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#endif
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WATCHDOG_RESET();
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memcpy (id, (void *)gd, sizeof (gd_t));
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debug ("Start relocate of code from %08x to %08lx\n", CONFIG_SYS_MONITOR_BASE, addr);
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relocate_code (addr_sp, id, addr);
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/* NOTREACHED - jump_to_ram() does not return */
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}
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/************************************************************************
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*
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* This is the next part if the initialization sequence: we are now
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* running from RAM and have a "normal" C environment, i. e. global
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* data can be written, BSS has been cleared, the stack size in not
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* that critical any more, etc.
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*
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************************************************************************
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*/
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void board_init_r (gd_t *id, ulong dest_addr)
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{
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char *s;
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bd_t *bd;
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extern void malloc_bin_reloc (void);
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#ifndef CONFIG_ENV_IS_NOWHERE
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extern char * env_name_spec;
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#endif
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#ifndef CONFIG_SYS_NO_FLASH
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ulong flash_size;
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#endif
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gd = id; /* initialize RAM version of global data */
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bd = gd->bd;
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gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
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#ifdef CONFIG_SERIAL_MULTI
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serial_initialize();
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#endif
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debug ("Now running in RAM - U-Boot at: %08lx\n", dest_addr);
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WATCHDOG_RESET ();
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gd->reloc_off = dest_addr - CONFIG_SYS_MONITOR_BASE;
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monitor_flash_len = (ulong)&__init_end - dest_addr;
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#if defined(CONFIG_NEEDS_MANUAL_RELOC)
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/*
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* We have to relocate the command table manually
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*/
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fixup_cmdtable(&__u_boot_cmd_start,
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(ulong)(&__u_boot_cmd_end - &__u_boot_cmd_start));
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#endif /* defined(CONFIG_NEEDS_MANUAL_RELOC) */
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/* there are some other pointer constants we must deal with */
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#ifndef CONFIG_ENV_IS_NOWHERE
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env_name_spec += gd->reloc_off;
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#endif
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WATCHDOG_RESET ();
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#ifdef CONFIG_LOGBUFFER
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logbuff_init_ptrs ();
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#endif
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#ifdef CONFIG_POST
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post_output_backlog ();
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post_reloc ();
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#endif
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WATCHDOG_RESET();
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#if 0
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/* instruction cache enabled in cpu_init_f() for faster relocation */
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icache_enable (); /* it's time to enable the instruction cache */
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#endif
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/*
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* Setup trap handlers
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*/
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trap_init (CONFIG_SYS_SDRAM_BASE);
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/* The Malloc area is immediately below the monitor copy in DRAM */
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mem_malloc_init (CONFIG_SYS_MONITOR_BASE + gd->reloc_off -
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TOTAL_MALLOC_LEN, TOTAL_MALLOC_LEN);
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malloc_bin_reloc ();
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#if !defined(CONFIG_SYS_NO_FLASH)
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puts ("Flash: ");
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if ((flash_size = flash_init ()) > 0) {
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# ifdef CONFIG_SYS_FLASH_CHECKSUM
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print_size (flash_size, "");
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/*
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* Compute and print flash CRC if flashchecksum is set to 'y'
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*
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* NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
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*/
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s = getenv ("flashchecksum");
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if (s && (*s == 'y')) {
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printf (" CRC: %08X",
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crc32 (0,
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(const unsigned char *) CONFIG_SYS_FLASH_BASE,
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flash_size)
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);
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}
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putc ('\n');
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# else /* !CONFIG_SYS_FLASH_CHECKSUM */
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print_size (flash_size, "\n");
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# endif /* CONFIG_SYS_FLASH_CHECKSUM */
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} else {
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puts (failed);
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hang ();
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}
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bd->bi_flashstart = CONFIG_SYS_FLASH_BASE; /* update start of FLASH memory */
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bd->bi_flashsize = flash_size; /* size of FLASH memory (final value) */
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bd->bi_flashoffset = 0;
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#else /* CONFIG_SYS_NO_FLASH */
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bd->bi_flashsize = 0;
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bd->bi_flashstart = 0;
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bd->bi_flashoffset = 0;
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#endif /* !CONFIG_SYS_NO_FLASH */
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WATCHDOG_RESET ();
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/* initialize higher level parts of CPU like time base and timers */
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cpu_init_r ();
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WATCHDOG_RESET ();
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#ifdef CONFIG_SPI
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# if !defined(CONFIG_ENV_IS_IN_EEPROM)
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spi_init_f ();
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# endif
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spi_init_r ();
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#endif
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/* relocate environment function pointers etc. */
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env_relocate ();
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/*
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* Fill in missing fields of bd_info.
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* We do this here, where we have "normal" access to the
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* environment; we used to do this still running from ROM,
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* where had to use getenv_f(), which can be pretty slow when
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* the environment is in EEPROM.
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*/
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bd->bi_ip_addr = getenv_IPaddr ("ipaddr");
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|
WATCHDOG_RESET ();
|
|
|
|
#if defined(CONFIG_PCI)
|
|
/*
|
|
* Do pci configuration
|
|
*/
|
|
pci_init ();
|
|
#endif
|
|
|
|
/** leave this here (after malloc(), environment and PCI are working) **/
|
|
/* Initialize stdio devices */
|
|
stdio_init ();
|
|
|
|
/* Initialize the jump table for applications */
|
|
jumptable_init ();
|
|
|
|
/* Initialize the console (after the relocation and devices init) */
|
|
console_init_r ();
|
|
|
|
#if defined(CONFIG_MISC_INIT_R)
|
|
/* miscellaneous platform dependent initialisations */
|
|
misc_init_r ();
|
|
#endif
|
|
|
|
#if defined(CONFIG_CMD_KGDB)
|
|
WATCHDOG_RESET ();
|
|
puts ("KGDB: ");
|
|
kgdb_init ();
|
|
#endif
|
|
|
|
debug ("U-Boot relocated to %08lx\n", dest_addr);
|
|
|
|
/*
|
|
* Enable Interrupts
|
|
*/
|
|
interrupt_init ();
|
|
|
|
/* Must happen after interrupts are initialized since
|
|
* an irq handler gets installed
|
|
*/
|
|
timer_init();
|
|
|
|
#ifdef CONFIG_STATUS_LED
|
|
status_led_set (STATUS_LED_BOOT, STATUS_LED_BLINKING);
|
|
#endif
|
|
|
|
udelay (20);
|
|
|
|
/* Insert function pointers now that we have relocated the code */
|
|
|
|
/* Initialize from environment */
|
|
if ((s = getenv ("loadaddr")) != NULL) {
|
|
load_addr = simple_strtoul (s, NULL, 16);
|
|
}
|
|
#if defined(CONFIG_CMD_NET)
|
|
if ((s = getenv ("bootfile")) != NULL) {
|
|
copy_filename (BootFile, s, sizeof (BootFile));
|
|
}
|
|
#endif
|
|
|
|
WATCHDOG_RESET ();
|
|
|
|
#if defined(CONFIG_CMD_DOC)
|
|
WATCHDOG_RESET ();
|
|
puts ("DOC: ");
|
|
doc_init ();
|
|
#endif
|
|
|
|
#if defined(CONFIG_CMD_NAND)
|
|
WATCHDOG_RESET ();
|
|
puts ("NAND: ");
|
|
nand_init(); /* go init the NAND */
|
|
#endif
|
|
|
|
#ifdef CONFIG_BITBANGMII
|
|
bb_miiphy_init();
|
|
#endif
|
|
#if defined(CONFIG_CMD_NET)
|
|
WATCHDOG_RESET();
|
|
#if defined(FEC_ENET)
|
|
eth_init(bd);
|
|
#endif
|
|
puts ("Net: ");
|
|
eth_initialize (bd);
|
|
#endif
|
|
|
|
#ifdef CONFIG_POST
|
|
post_run (NULL, POST_RAM | post_bootmode_get(0));
|
|
#endif
|
|
|
|
#if defined(CONFIG_CMD_PCMCIA) \
|
|
&& !defined(CONFIG_CMD_IDE)
|
|
WATCHDOG_RESET ();
|
|
puts ("PCMCIA:");
|
|
pcmcia_init ();
|
|
#endif
|
|
|
|
#if defined(CONFIG_CMD_IDE)
|
|
WATCHDOG_RESET ();
|
|
puts ("IDE: ");
|
|
ide_init ();
|
|
#endif
|
|
|
|
#ifdef CONFIG_LAST_STAGE_INIT
|
|
WATCHDOG_RESET ();
|
|
/*
|
|
* Some parts can be only initialized if all others (like
|
|
* Interrupts) are up and running (i.e. the PC-style ISA
|
|
* keyboard).
|
|
*/
|
|
last_stage_init ();
|
|
#endif
|
|
|
|
#if defined(CONFIG_CMD_BEDBUG)
|
|
WATCHDOG_RESET ();
|
|
bedbug_init ();
|
|
#endif
|
|
|
|
#if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
|
|
/*
|
|
* Export available size of memory for Linux,
|
|
* taking into account the protected RAM at top of memory
|
|
*/
|
|
{
|
|
ulong pram;
|
|
char memsz[32];
|
|
#ifdef CONFIG_PRAM
|
|
char *s;
|
|
|
|
if ((s = getenv ("pram")) != NULL) {
|
|
pram = simple_strtoul (s, NULL, 10);
|
|
} else {
|
|
pram = CONFIG_PRAM;
|
|
}
|
|
#else
|
|
pram=0;
|
|
#endif
|
|
#ifdef CONFIG_LOGBUFFER
|
|
/* Also take the logbuffer into account (pram is in kB) */
|
|
pram += (LOGBUFF_LEN+LOGBUFF_OVERHEAD)/1024;
|
|
#endif
|
|
sprintf (memsz, "%ldk", (bd->bi_memsize / 1024) - pram);
|
|
setenv ("mem", memsz);
|
|
}
|
|
#endif
|
|
|
|
#ifdef CONFIG_MODEM_SUPPORT
|
|
{
|
|
extern int do_mdm_init;
|
|
do_mdm_init = gd->do_mdm_init;
|
|
}
|
|
#endif
|
|
|
|
#ifdef CONFIG_WATCHDOG
|
|
/* disable watchdog if environment is set */
|
|
if ((s = getenv ("watchdog")) != NULL) {
|
|
if (strncmp (s, "off", 3) == 0) {
|
|
WATCHDOG_DISABLE ();
|
|
}
|
|
}
|
|
#endif /* CONFIG_WATCHDOG*/
|
|
|
|
|
|
/* Initialization complete - start the monitor */
|
|
|
|
/* main_loop() can return to retry autoboot, if so just run it again. */
|
|
for (;;) {
|
|
WATCHDOG_RESET ();
|
|
main_loop ();
|
|
}
|
|
|
|
/* NOTREACHED - no way out of command loop except booting */
|
|
}
|
|
|
|
|
|
void hang(void)
|
|
{
|
|
puts ("### ERROR ### Please RESET the board ###\n");
|
|
for (;;);
|
|
}
|