659 lines
15 KiB
C
659 lines
15 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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* SPDX-License-Identifier: GPL-2.0+
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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 <linux/compiler.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_SYS_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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# undef INIT_FUNC_WATCHDOG_INIT
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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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gd->baudrate = getenv_ulong("baudrate", 10, 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_SYS_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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#ifdef CONFIG_SYS_I2C
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i2c_init_all();
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#else
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i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
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#endif
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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_SYS_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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ulong reg;
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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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reg = getenv_ulong("pram", 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->arch.inp_clk; /* input Freq in Hz */
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bd->bi_vcofreq = gd->arch.vco_clk; /* vco Freq in Hz */
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bd->bi_flbfreq = gd->arch.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 __maybe_unused;
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bd_t *bd;
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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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WATCHDOG_RESET ();
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gd->reloc_off = dest_addr - CONFIG_SYS_MONITOR_BASE;
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serial_initialize();
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debug("Now running in RAM - U-Boot at: %08lx\n", dest_addr);
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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(ll_entry_start(cmd_tbl_t, cmd),
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ll_entry_count(cmd_tbl_t, cmd));
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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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#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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if (getenv_yesno("flashchecksum") == 1) {
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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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#if defined(CONFIG_SYS_I2C)
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/* Adjust I2C subsystem pointers after relocation */
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i2c_reloc_fixup();
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#endif
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/* relocate environment function pointers etc. */
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env_relocate ();
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WATCHDOG_RESET ();
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#if defined(CONFIG_PCI)
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/*
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* Do pci configuration
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*/
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pci_init ();
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#endif
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/** leave this here (after malloc(), environment and PCI are working) **/
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/* Initialize stdio devices */
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stdio_init ();
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/* Initialize the jump table for applications */
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jumptable_init ();
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/* Initialize the console (after the relocation and devices init) */
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console_init_r ();
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#if defined(CONFIG_MISC_INIT_R)
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/* miscellaneous platform dependent initialisations */
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misc_init_r ();
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#endif
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#if defined(CONFIG_CMD_KGDB)
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WATCHDOG_RESET ();
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puts ("KGDB: ");
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kgdb_init ();
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#endif
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debug ("U-Boot relocated to %08lx\n", dest_addr);
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/*
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* Enable Interrupts
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*/
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interrupt_init ();
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/* Must happen after interrupts are initialized since
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* an irq handler gets installed
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*/
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timer_init();
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#ifdef CONFIG_STATUS_LED
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status_led_set (STATUS_LED_BOOT, STATUS_LED_BLINKING);
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#endif
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udelay (20);
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/* Insert function pointers now that we have relocated the code */
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/* Initialize from environment */
|
|
load_addr = getenv_ulong("loadaddr", 16, load_addr);
|
|
|
|
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 = 0;
|
|
char memsz[32];
|
|
|
|
#ifdef CONFIG_PRAM
|
|
pram = getenv_ulong("pram", 10, CONFIG_PRAM);
|
|
#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 */
|
|
}
|