upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
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442 lines
10 KiB
442 lines
10 KiB
/*
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* (C) Copyright 2002
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* (C) Copyright 2002
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* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
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* Marius Groeger <mgroeger@sysgo.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 <command.h>
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#include <malloc.h>
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#include <devices.h>
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#include <version.h>
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#include <net.h>
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#ifdef CONFIG_DRIVER_SMC91111
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#include "../drivers/smc91111.h"
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#endif
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#ifdef CONFIG_DRIVER_LAN91C96
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#include "../drivers/lan91c96.h"
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#endif
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#if (CONFIG_COMMANDS & CFG_CMD_NAND)
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void nand_init (void);
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#endif
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ulong monitor_flash_len;
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#ifdef CONFIG_HAS_DATAFLASH
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extern int AT91F_DataflashInit(void);
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extern void dataflash_print_info(void);
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#endif
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#ifndef CONFIG_IDENT_STRING
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#define CONFIG_IDENT_STRING ""
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#endif
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const char version_string[] =
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U_BOOT_VERSION" (" __DATE__ " - " __TIME__ ")"CONFIG_IDENT_STRING;
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#ifdef CONFIG_DRIVER_CS8900
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extern void cs8900_get_enetaddr (uchar * addr);
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#endif
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#ifdef CONFIG_DRIVER_RTL8019
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extern void rtl8019_get_enetaddr (uchar * addr);
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#endif
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/*
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* Begin and End of memory area for malloc(), and current "brk"
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*/
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static ulong mem_malloc_start = 0;
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static ulong mem_malloc_end = 0;
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static ulong mem_malloc_brk = 0;
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static
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void mem_malloc_init (ulong dest_addr)
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{
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mem_malloc_start = dest_addr;
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mem_malloc_end = dest_addr + CFG_MALLOC_LEN;
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mem_malloc_brk = mem_malloc_start;
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memset ((void *) mem_malloc_start, 0,
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mem_malloc_end - mem_malloc_start);
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}
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void *sbrk (ptrdiff_t increment)
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{
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ulong old = mem_malloc_brk;
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ulong new = old + increment;
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if ((new < mem_malloc_start) || (new > mem_malloc_end)) {
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return (NULL);
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}
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mem_malloc_brk = new;
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return ((void *) old);
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}
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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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* or dropped completely,
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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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DECLARE_GLOBAL_DATA_PTR;
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uchar tmp[64]; /* long enough for environment variables */
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int i = getenv_r ("baudrate", tmp, sizeof (tmp));
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gd->bd->bi_baudrate = 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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static int display_banner (void)
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{
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printf ("\n\n%s\n\n", version_string);
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printf ("U-Boot code: %08lX -> %08lX BSS: -> %08lX\n",
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_armboot_start, _bss_start, _bss_end);
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#ifdef CONFIG_MODEM_SUPPORT
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puts ("Modem Support enabled\n");
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#endif
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#ifdef CONFIG_USE_IRQ
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printf ("IRQ Stack: %08lx\n", IRQ_STACK_START);
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printf ("FIQ Stack: %08lx\n", FIQ_STACK_START);
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#endif
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return (0);
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}
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/*
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* WARNING: this code looks "cleaner" than the PowerPC version, but
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* has the disadvantage that you either get nothing, or everything.
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* On PowerPC, you might see "DRAM: " before the system hangs - which
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* gives a simple yet clear indication which part of the
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* initialization if failing.
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*/
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static int display_dram_config (void)
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{
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DECLARE_GLOBAL_DATA_PTR;
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int i;
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puts ("RAM Configuration:\n");
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for(i=0; i<CONFIG_NR_DRAM_BANKS; i++) {
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printf ("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start);
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print_size (gd->bd->bi_dram[i].size, "\n");
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}
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return (0);
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}
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static void display_flash_config (ulong size)
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{
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puts ("Flash: ");
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print_size (size, "\n");
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}
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/*
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* Breathe some life into the board...
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*
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* Initialize a serial port as console, and carry out some hardware
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* tests.
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*
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* The first part of initialization is running from Flash memory;
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* its main purpose is to initialize the RAM so that we
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* can relocate the monitor code to RAM.
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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 dependent #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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init_fnc_t *init_sequence[] = {
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cpu_init, /* basic cpu dependent setup */
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board_init, /* basic board dependent setup */
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interrupt_init, /* set up exceptions */
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env_init, /* initialize environment */
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init_baudrate, /* initialze baudrate settings */
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serial_init, /* serial communications setup */
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console_init_f, /* stage 1 init of console */
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display_banner, /* say that we are here */
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dram_init, /* configure available RAM banks */
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display_dram_config,
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#if defined(CONFIG_VCMA9)
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checkboard,
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#endif
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NULL,
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};
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void start_armboot (void)
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{
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DECLARE_GLOBAL_DATA_PTR;
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ulong size;
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init_fnc_t **init_fnc_ptr;
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char *s;
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#if defined(CONFIG_VFD)
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unsigned long addr;
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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*)(_armboot_start - CFG_MALLOC_LEN - sizeof(gd_t));
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/* compiler optimization barrier needed for GCC >= 3.4 */
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__asm__ __volatile__("": : :"memory");
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memset ((void*)gd, 0, sizeof (gd_t));
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gd->bd = (bd_t*)((char*)gd - sizeof(bd_t));
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memset (gd->bd, 0, sizeof (bd_t));
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monitor_flash_len = _bss_start - _armboot_start;
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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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/* configure available FLASH banks */
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size = flash_init ();
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display_flash_config (size);
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#ifdef CONFIG_VFD
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# ifndef PAGE_SIZE
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# define PAGE_SIZE 4096
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# endif
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/*
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* reserve memory for VFD display (always full pages)
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*/
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/* armboot_end is defined in the board-specific linker script */
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addr = (_bss_start + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
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size = vfd_setmem (addr);
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gd->fb_base = addr;
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#endif /* CONFIG_VFD */
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/* armboot_start is defined in the board-specific linker script */
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mem_malloc_init (_armboot_start - CFG_MALLOC_LEN);
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#if (CONFIG_COMMANDS & CFG_CMD_NAND)
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puts ("NAND:");
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nand_init(); /* go init the NAND */
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#endif
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#ifdef CONFIG_HAS_DATAFLASH
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AT91F_DataflashInit();
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dataflash_print_info();
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#endif
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/* initialize environment */
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env_relocate ();
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#ifdef CONFIG_VFD
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/* must do this after the framebuffer is allocated */
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drv_vfd_init();
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#endif /* CONFIG_VFD */
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/* IP Address */
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gd->bd->bi_ip_addr = getenv_IPaddr ("ipaddr");
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/* MAC Address */
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{
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int i;
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ulong reg;
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char *s, *e;
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uchar tmp[64];
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i = getenv_r ("ethaddr", tmp, sizeof (tmp));
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s = (i > 0) ? tmp : NULL;
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for (reg = 0; reg < 6; ++reg) {
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gd->bd->bi_enetaddr[reg] = s ? simple_strtoul (s, &e, 16) : 0;
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if (s)
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s = (*e) ? e + 1 : e;
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}
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}
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devices_init (); /* get the devices list going. */
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jumptable_init ();
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console_init_r (); /* fully init console as a device */
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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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/* enable exceptions */
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enable_interrupts ();
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/* Perform network card initialisation if necessary */
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#ifdef CONFIG_DRIVER_CS8900
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cs8900_get_enetaddr (gd->bd->bi_enetaddr);
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#endif
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#if defined(CONFIG_DRIVER_SMC91111) || defined (CONFIG_DRIVER_LAN91C96)
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if (getenv ("ethaddr")) {
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smc_set_mac_addr(gd->bd->bi_enetaddr);
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}
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#endif /* CONFIG_DRIVER_SMC91111 || CONFIG_DRIVER_LAN91C96 */
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/* Initialize from environment */
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if ((s = getenv ("loadaddr")) != NULL) {
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load_addr = simple_strtoul (s, NULL, 16);
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}
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#if (CONFIG_COMMANDS & CFG_CMD_NET)
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if ((s = getenv ("bootfile")) != NULL) {
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copy_filename (BootFile, s, sizeof (BootFile));
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}
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#endif /* CFG_CMD_NET */
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#ifdef BOARD_LATE_INIT
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board_late_init ();
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#endif
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/* main_loop() can return to retry autoboot, if so just run it again. */
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for (;;) {
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main_loop ();
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}
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/* NOTREACHED - no way out of command loop except booting */
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}
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void hang (void)
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{
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puts ("### ERROR ### Please RESET the board ###\n");
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for (;;);
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}
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#ifdef CONFIG_MODEM_SUPPORT
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/* called from main loop (common/main.c) */
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extern void dbg(const char *fmt, ...);
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int mdm_init (void)
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{
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char env_str[16];
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char *init_str;
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int i;
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extern char console_buffer[];
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static inline void mdm_readline(char *buf, int bufsiz);
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extern void enable_putc(void);
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extern int hwflow_onoff(int);
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enable_putc(); /* enable serial_putc() */
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#ifdef CONFIG_HWFLOW
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init_str = getenv("mdm_flow_control");
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if (init_str && (strcmp(init_str, "rts/cts") == 0))
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hwflow_onoff (1);
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else
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hwflow_onoff(-1);
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#endif
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for (i = 1;;i++) {
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sprintf(env_str, "mdm_init%d", i);
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if ((init_str = getenv(env_str)) != NULL) {
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serial_puts(init_str);
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serial_puts("\n");
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for(;;) {
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mdm_readline(console_buffer, CFG_CBSIZE);
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dbg("ini%d: [%s]", i, console_buffer);
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if ((strcmp(console_buffer, "OK") == 0) ||
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(strcmp(console_buffer, "ERROR") == 0)) {
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dbg("ini%d: cmd done", i);
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break;
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} else /* in case we are originating call ... */
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if (strncmp(console_buffer, "CONNECT", 7) == 0) {
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dbg("ini%d: connect", i);
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return 0;
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}
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}
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} else
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break; /* no init string - stop modem init */
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udelay(100000);
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}
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udelay(100000);
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/* final stage - wait for connect */
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for(;i > 1;) { /* if 'i' > 1 - wait for connection
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message from modem */
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mdm_readline(console_buffer, CFG_CBSIZE);
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dbg("ini_f: [%s]", console_buffer);
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if (strncmp(console_buffer, "CONNECT", 7) == 0) {
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dbg("ini_f: connected");
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return 0;
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}
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}
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return 0;
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}
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/* 'inline' - We have to do it fast */
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static inline void mdm_readline(char *buf, int bufsiz)
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{
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char c;
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char *p;
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int n;
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n = 0;
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p = buf;
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for(;;) {
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c = serial_getc();
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/* dbg("(%c)", c); */
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switch(c) {
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case '\r':
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break;
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case '\n':
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*p = '\0';
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return;
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default:
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if(n++ > bufsiz) {
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*p = '\0';
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return; /* sanity check */
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}
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*p = c;
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p++;
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break;
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}
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}
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}
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#endif /* CONFIG_MODEM_SUPPORT */
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