502 lines
12 KiB
C
502 lines
12 KiB
C
/*
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* (C) Copyright 2003
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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 <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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#include <environment.h>
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#ifdef CONFIG_DANUBE
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#include <asm-mips/danube.h>
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#include <configs/danube.h>
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#endif
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#include "LzmaWrapper.h"
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//#define DEBUG_ENABLE_BOOTSTRAP_PRINTF
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DECLARE_GLOBAL_DATA_PTR;
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#if ( ((CFG_ENV_ADDR+CFG_ENV_SIZE) < BOOTSTRAP_CFG_MONITOR_BASE) || \
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(CFG_ENV_ADDR >= (BOOTSTRAP_CFG_MONITOR_BASE + CFG_MONITOR_LEN)) ) || \
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defined(CFG_ENV_IS_IN_NVRAM)
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#define TOTAL_MALLOC_LEN (CFG_MALLOC_LEN + CFG_ENV_SIZE)
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#else
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#define TOTAL_MALLOC_LEN CFG_MALLOC_LEN
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#endif
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#undef DEBUG
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#if (CONFIG_COMMANDS & CFG_CMD_NAND)
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extern unsigned long nand_init(void);
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#endif
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#ifdef CONFIG_SERIAL_FLASH
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extern int serial_flash_init (void);
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#endif
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extern int timer_init(void);
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extern int incaip_set_cpuclk(void);
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extern ulong uboot_end_data_bootstrap;
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extern ulong uboot_end_bootstrap;
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ulong monitor_flash_len;
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const char version_string[] =
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U_BOOT_VERSION" (" __DATE__ " - " __TIME__ ")";
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static char *failed = "*** failed ***\n";
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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;
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static ulong mem_malloc_end;
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static ulong mem_malloc_brk;
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/*
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* The Malloc area is immediately below the monitor copy in DRAM
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*/
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static void mem_malloc_init (ulong dest_addr)
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{
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// ulong dest_addr = BOOTSTRAP_CFG_MONITOR_BASE + gd->reloc_off;
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mem_malloc_end = dest_addr;
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mem_malloc_start = dest_addr - TOTAL_MALLOC_LEN;
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mem_malloc_brk = mem_malloc_start;
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memset ((void *) mem_malloc_start,
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0,
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mem_malloc_end - mem_malloc_start);
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}
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void *malloc(unsigned int size)
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{
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if(size < (mem_malloc_end - mem_malloc_start))
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{
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mem_malloc_start += size;
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return (void *)(mem_malloc_start - size);
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}
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return NULL;
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}
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void *realloc(void *src,unsigned int size)
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{
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return NULL;
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}
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void free(void *src)
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{
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return;
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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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static int init_func_ram (void)
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{
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#ifdef CONFIG_BOARD_TYPES
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int board_type = gd->board_type;
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#else
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int board_type = 0; /* use dummy arg */
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#endif
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#ifdef DEBUG_ENABLE_BOOTSTRAP_PRINTF
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puts ("DRAM: ");
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#endif
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if ((gd->ram_size = initdram (board_type)) > 0) {
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#ifdef DEBUG_ENABLE_BOOTSTRAP_PRINTF
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print_size (gd->ram_size, "\n");
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#endif
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return (0);
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}
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#ifdef DEBUG_ENABLE_BOOTSTRAP_PRINTF
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puts (failed);
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#endif
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return (1);
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}
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static int display_banner(void)
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{
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#ifdef DEBUG_ENABLE_BOOTSTRAP_PRINTF
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printf ("\n\n%s\n\n", version_string);
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#endif
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return (0);
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}
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static int init_baudrate (void)
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{
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#if 0
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char tmp[64]; /* long enough for environment variables */
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int i = getenv_r ("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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#endif
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gd->baudrate = CONFIG_BAUDRATE;
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return (0);
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}
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#ifdef CONFIG_DANUBE
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static void init_led(void)
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{
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*(unsigned long *)0xBE100B18 |= 0x70;
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*(unsigned long *)0xBE100B1C |= 0x70;
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*(unsigned long *)0xBE100B20 &= ~0x70;
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*(unsigned long *)0xBE100B24 |= 0x70;
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#ifdef USE_REFERENCE_BOARD
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*DANUBE_LED_CON1 = 0x00000003;
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*DANUBE_LED_CPU0 = 0x0000010;
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*DANUBE_LED_CPU1 = 0x00000000;
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*DANUBE_LED_AR = 0x00000000;
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*DANUBE_LED_CON0 = 0x84000000;
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#else
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*DANUBE_LED_CON1 = 0x00000007;
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*DANUBE_LED_CPU0 = 0x00001000;
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*DANUBE_LED_CPU1 = 0x00000000;
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*DANUBE_LED_AR = 0x00000000;
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*DANUBE_LED_CON0 = 0x84000000;
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#endif
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}
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#endif
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/*
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* Breath some life into the board...
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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 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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init_fnc_t *init_sequence[] = {
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//timer_init,
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//env_init, /* initialize environment */
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#ifdef CONFIG_INCA_IP
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incaip_set_cpuclk, /* set cpu clock according to environment variable */
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#endif
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#ifdef DEBUG_ENABLE_BOOTSTRAP_PRINTF
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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,
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display_banner, /* say that we are here */
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#endif
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init_func_ram,
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//checkboard,
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NULL,
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};
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void bootstrap_board_init_f(ulong bootflag)
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{
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gd_t gd_data, *id;
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bd_t *bd;
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init_fnc_t **init_fnc_ptr;
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ulong addr, addr_sp, len = (ulong)&uboot_end_bootstrap - BOOTSTRAP_CFG_MONITOR_BASE;
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ulong *s;
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ulong lzmaImageaddr = 0;
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#ifdef CONFIG_PURPLE
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void copy_code (ulong);
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#endif
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/* Pointer is writable since we allocated a register for it.
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*/
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gd = &gd_data;
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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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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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addr = CFG_SDRAM_BASE + gd->ram_size;
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/* We can reserve some RAM "on top" here.
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*/
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/* round down to next 4 kB limit.
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*/
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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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/* Reserve memory for U-Boot code, data & bss
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* round down to next 16 kB limit
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*/
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addr -= len;
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addr &= ~(16 * 1024 - 1);
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debug ("Reserving %ldk for U-Boot at: %08lx\n", len >> 10, addr);
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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 %d 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 %d 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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*/
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addr_sp -= CFG_BOOTPARAMS_LEN;
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bd->bi_boot_params = addr_sp;
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debug ("Reserving %dk for boot params() at: %08lx\n",
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CFG_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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s = (ulong *)addr_sp;
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*s-- = 0;
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*s-- = 0;
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addr_sp = (ulong)s;
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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 = CFG_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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bd->bi_baudrate = gd->baudrate; /* Console Baudrate */
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memcpy (id, (void *)gd, sizeof (gd_t));
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/* On the purple board we copy the code in a special way
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* in order to solve flash problems
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*/
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#ifdef CONFIG_PURPLE
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copy_code(addr);
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#endif
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lzmaImageaddr = (ulong)&uboot_end_data_bootstrap;
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#ifdef DEBUG_ENABLE_BOOTSTRAP_PRINTF
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printf ("\n relocating to address %08x ", addr);
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#endif
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bootstrap_relocate_code (addr_sp, id, addr);
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/* NOTREACHED - relocate_code() 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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#define CONFIG_LZMA
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void bootstrap_board_init_r (gd_t *id, ulong dest_addr)
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{
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int i;
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ulong addr;
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ulong data, len, checksum;
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ulong *len_ptr;
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image_header_t header;
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image_header_t *hdr = &header;
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unsigned int destLen;
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int (*fn)();
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#if 1
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#endif
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/* initialize malloc() area */
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mem_malloc_init(dest_addr);
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#ifdef DEBUG_ENABLE_BOOTSTRAP_PRINTF
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printf("\n Compressed Image at %08x \n ", (BOOTSTRAP_CFG_MONITOR_BASE + ((ulong)&uboot_end_data_bootstrap - dest_addr)));
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#endif
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addr = (char *)(BOOTSTRAP_CFG_MONITOR_BASE + ((ulong)&uboot_end_data_bootstrap - dest_addr));
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memmove (&header, (char *)addr, sizeof(image_header_t));
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if (ntohl(hdr->ih_magic) != IH_MAGIC) {
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#ifdef DEBUG_ENABLE_BOOTSTRAP_PRINTF
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printf ("Bad Magic Number at address 0x%08lx\n",addr);
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#endif
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return;
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}
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data = (ulong)&header;
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len = sizeof(image_header_t);
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checksum = ntohl(hdr->ih_hcrc);
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hdr->ih_hcrc = 0;
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if (crc32 (0, (char *)data, len) != checksum) {
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#ifdef DEBUG_ENABLE_BOOTSTRAP_PRINTF
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printf ("Bad Header Checksum\n");
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#endif
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return;
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}
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data = addr + sizeof(image_header_t);
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len = ntohl(hdr->ih_size);
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len_ptr = (ulong *)data;
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#ifdef DEBUG_ENABLE_BOOTSTRAP_PRINTF
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printf ("Disabling all the interrupts\n");
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#endif
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disable_interrupts();
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#ifdef DEBUG_ENABLE_BOOTSTRAP_PRINTF
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printf (" Uncompressing UBoot Image ... \n" );
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#endif
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/*
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* If we've got less than 4 MB of malloc() space,
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* use slower decompression algorithm which requires
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* at most 2300 KB of memory.
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*/
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destLen = 0x0;
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#ifdef CONFIG_BZIP2
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i = BZ2_bzBuffToBuffDecompress ((char*)ntohl(hdr->ih_load),
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0x400000, (char *)data, len,
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CFG_MALLOC_LEN < (4096 * 1024), 0);
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if (i != BZ_OK) {
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#ifdef DEBUG_ENABLE_BOOTSTRAP_PRINTF
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printf ("BUNZIP2 ERROR %d - must RESET board to recover\n", i);
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#endif
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return;
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}
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#endif /* CONFIG_BZIP2 */
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#ifdef CONFIG_MICROBZIP2
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i = micro_bzBuffToBuffDecompress ((char*)ntohl(hdr->ih_load),
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&destLen, (char *)data, len,
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CFG_MALLOC_LEN < (4096 * 1024), 0);
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if (i != RETVAL_OK) {
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#ifdef DEBUG_ENABLE_BOOTSTRAP_PRINTF
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printf ("MICRO_BUNZIP2 ERROR %d - must RESET board to recover\n", i);
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#endif
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//do_reset (cmdtp, flag, argc, argv);
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return;
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}
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#endif
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#ifdef CONFIG_LZMA
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#if 0
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i = lzmaBuffToBuffDecompress ((char*)ntohl(hdr->ih_load),
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&destLen, (char *)data, len);
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#endif
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i = lzma_inflate ((unsigned char *)data, len, (unsigned char*)ntohl(hdr->ih_load), &destLen);
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if (i != LZMA_RESULT_OK) {
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#ifdef DEBUG_ENABLE_BOOTSTRAP_PRINTF
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printf ("LZMA ERROR %d - must RESET board to recover\n", i);
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#endif
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//do_reset (cmdtp, flag, argc, argv);
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return;
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}
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#endif
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#ifdef DEBUG_ENABLE_BOOTSTRAP_PRINTF
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printf (" Uncompression completed successfully with destLen %d\n ",destLen );
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#endif
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fn = ntohl(hdr->ih_load);
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(*fn)();
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hang ();
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}
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void hang (void)
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{
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#ifdef DEBUG_ENABLE_BOOTSTRAP_PRINTF
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puts ("### ERROR ### Please RESET the board ###\n");
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#endif
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for (;;);
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}
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