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