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authorwdenk <wdenk>2002-11-03 00:38:21 +0000
committerwdenk <wdenk>2002-11-03 00:38:21 +0000
commitfe8c2806cdba70479e351299881a395dc2be7785 (patch)
treea1e8b98a1838cba6e6f5c765d9d85339257c45f5 /lib_ppc
parentf9087a3213cc245cf9b90436475b5af822bd7579 (diff)
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Initial revision
Diffstat (limited to 'lib_ppc')
-rw-r--r--lib_ppc/board.c962
-rw-r--r--lib_ppc/extable.c83
2 files changed, 1045 insertions, 0 deletions
diff --git a/lib_ppc/board.c b/lib_ppc/board.c
new file mode 100644
index 0000000..347b663
--- /dev/null
+++ b/lib_ppc/board.c
@@ -0,0 +1,962 @@
+/*
+ * (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 <devices.h>
+#include <syscall.h>
+#ifdef CONFIG_8xx
+#include <mpc8xx.h>
+#endif
+#if (CONFIG_COMMANDS & CFG_CMD_IDE)
+#include <ide.h>
+#endif
+#if (CONFIG_COMMANDS & CFG_CMD_SCSI)
+#include <scsi.h>
+#endif
+#if (CONFIG_COMMANDS & CFG_CMD_KGDB)
+#include <kgdb.h>
+#endif
+#ifdef CONFIG_STATUS_LED
+#include <status_led.h>
+#endif
+#include <net.h>
+#if (CONFIG_COMMANDS & CFG_CMD_BEDBUG)
+#include <cmd_bedbug.h>
+#endif
+#ifdef CFG_ALLOC_DPRAM
+#include <commproc.h>
+#endif
+#include <version.h>
+#if defined(CONFIG_BAB7xx)
+#include <w83c553f.h>
+#endif
+#include <dtt.h>
+#if defined(CONFIG_POST)
+#include <post.h>
+#endif
+
+#if (CONFIG_COMMANDS & CFG_CMD_DOC)
+void doc_init (void);
+#endif
+#if defined(CONFIG_HARD_I2C) || \
+ defined(CONFIG_SOFT_I2C)
+#include <i2c.h>
+#endif
+
+static char *failed = "*** failed ***\n";
+
+#if defined(CONFIG_PCU_E) || defined(CONFIG_OXC)
+extern flash_info_t flash_info[];
+#endif
+
+#include <environment.h>
+
+#if ( ((CFG_ENV_ADDR+CFG_ENV_SIZE) < CFG_MONITOR_BASE) || \
+ (CFG_ENV_ADDR >= (CFG_MONITOR_BASE + CFG_MONITOR_LEN)) ) || \
+ defined(CFG_ENV_IS_IN_NVRAM)
+#define TOTAL_MALLOC_LEN (CFG_MALLOC_LEN + CFG_ENV_SIZE)
+#else
+#define TOTAL_MALLOC_LEN CFG_MALLOC_LEN
+#endif
+
+/*
+ * Begin and End of memory area for malloc(), and current "brk"
+ */
+static ulong mem_malloc_start = 0;
+static ulong mem_malloc_end = 0;
+static ulong mem_malloc_brk = 0;
+
+/************************************************************************
+ * Utilities *
+ ************************************************************************
+ */
+
+/*
+ * The Malloc area is immediately below the monitor copy in DRAM
+ */
+static void mem_malloc_init (void)
+{
+ DECLARE_GLOBAL_DATA_PTR;
+
+ ulong dest_addr = CFG_MONITOR_BASE + gd->reloc_off;
+
+ mem_malloc_end = dest_addr;
+ mem_malloc_start = dest_addr - TOTAL_MALLOC_LEN;
+ mem_malloc_brk = mem_malloc_start;
+
+ memset ((void *) mem_malloc_start,
+ 0,
+ mem_malloc_end - mem_malloc_start);
+}
+
+void *sbrk (ptrdiff_t increment)
+{
+ ulong old = mem_malloc_brk;
+ ulong new = old + increment;
+
+ if ((new < mem_malloc_start) || (new > mem_malloc_end)) {
+ return (NULL);
+ }
+ mem_malloc_brk = new;
+ return ((void *) old);
+}
+
+char *strmhz (char *buf, long hz)
+{
+ long l, n;
+ long m;
+
+ n = hz / 1000000L;
+ l = sprintf (buf, "%ld", n);
+ m = (hz % 1000000L) / 1000L;
+ if (m != 0)
+ sprintf (buf + l, ".%03ld", m);
+ return (buf);
+}
+
+static void syscalls_init (void)
+{
+ ulong *addr;
+
+ syscall_tbl[SYSCALL_MALLOC] = (void *) malloc;
+ syscall_tbl[SYSCALL_FREE] = (void *) free;
+
+ syscall_tbl[SYSCALL_INSTALL_HDLR] = (void *) irq_install_handler;
+ syscall_tbl[SYSCALL_FREE_HDLR] = (void *) irq_free_handler;
+
+ addr = (ulong *) 0xc00; /* syscall ISR addr */
+
+ /* patch ISR code */
+ *addr++ |= (ulong) syscall_tbl >> 16;
+ *addr++ |= (ulong) syscall_tbl & 0xFFFF;
+ *addr++ |= NR_SYSCALLS >> 16;
+ *addr++ |= NR_SYSCALLS & 0xFFFF;
+
+ flush_cache (0x0C00, 0x10);
+}
+
+/*
+ * 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)
+{
+ DECLARE_GLOBAL_DATA_PTR;
+
+ uchar tmp[64]; /* long enough for environment variables */
+ int i = getenv_r ("baudrate", tmp, sizeof (tmp));
+
+ gd->baudrate = (i > 0)
+ ? (int) simple_strtoul (tmp, NULL, 10)
+ : CONFIG_BAUDRATE;
+
+ return (0);
+}
+
+/***********************************************************************/
+
+static int init_func_ram (void)
+{
+ DECLARE_GLOBAL_DATA_PTR;
+
+#ifdef CONFIG_BOARD_TYPES
+ int board_type = gd->board_type;
+#else
+ int board_type = 0; /* use dummy arg */
+#endif
+ 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 (CFG_I2C_SPEED, CFG_I2C_SLAVE);
+ puts ("ready\n");
+ return (0);
+}
+#endif
+
+/***********************************************************************/
+
+#if defined(CONFIG_WATCHDOG)
+static int init_func_watchdog_init (void)
+{
+ puts (" Watchdog enabled\n");
+ WATCHDOG_RESET ();
+ return (0);
+}
+# define INIT_FUNC_WATCHDOG_INIT init_func_watchdog_init,
+
+static int init_func_watchdog_reset (void)
+{
+ WATCHDOG_RESET ();
+ return (0);
+}
+# define INIT_FUNC_WATCHDOG_RESET init_func_watchdog_reset,
+#else
+# define INIT_FUNC_WATCHDOG_INIT /* undef */
+# define INIT_FUNC_WATCHDOG_RESET /* undef */
+#endif /* CONFIG_WATCHDOG */
+
+/************************************************************************
+ * Initialization sequence *
+ ************************************************************************
+ */
+
+init_fnc_t *init_sequence[] = {
+
+#if defined(CONFIG_BOARD_PRE_INIT)
+ board_pre_init, /* very early board init code (fpga boot, etc.) */
+#endif
+
+ get_clocks, /* get CPU and bus clocks (etc.) */
+ init_timebase,
+#ifdef CFG_ALLOC_DPRAM
+ dpram_init,
+#endif
+#if defined(CONFIG_BOARD_POSTCLK_INIT)
+ board_postclk_init,
+#endif
+ env_init,
+ init_baudrate,
+ serial_init,
+ console_init_f,
+ display_options,
+#if defined(CONFIG_8260)
+ prt_8260_rsr,
+ prt_8260_clks,
+#endif /* CONFIG_8260 */
+ checkcpu,
+ checkboard,
+ INIT_FUNC_WATCHDOG_INIT
+#if defined(CONFIG_BMW) || \
+ defined(CONFIG_COGENT) || \
+ defined(CONFIG_HYMOD) || \
+ defined(CONFIG_RSD_PROTO) || \
+ defined(CONFIG_W7O)
+ misc_init_f,
+#endif
+ INIT_FUNC_WATCHDOG_RESET
+#if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
+ init_func_i2c,
+#endif
+#if defined(CONFIG_DTT) /* Digital Thermometers and Thermostats */
+ dtt_init,
+#endif
+ INIT_FUNC_WATCHDOG_RESET
+ init_func_ram,
+#if defined(CFG_DRAM_TEST)
+ testdram,
+#endif /* CFG_DRAM_TEST */
+ INIT_FUNC_WATCHDOG_RESET
+
+ 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)
+{
+ DECLARE_GLOBAL_DATA_PTR;
+
+ bd_t *bd;
+ ulong len, addr, addr_sp;
+ gd_t *id;
+ init_fnc_t **init_fnc_ptr;
+#ifdef CONFIG_PRAM
+ int i;
+ ulong reg;
+ uchar tmp[64]; /* long enough for environment variables */
+#endif
+
+ /* Pointer is writable since we allocated a register for it */
+ gd = (gd_t *) (CFG_INIT_RAM_ADDR + CFG_GBL_DATA_OFFSET);
+
+#ifndef CONFIG_8260
+ /* Clear initial global data */
+ memset ((void *) gd, 0, sizeof (gd_t));
+#endif
+
+ 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 = get_endaddr () - CFG_MONITOR_BASE;
+
+ if (len > CFG_MONITOR_LEN) {
+ printf ("*** U-Boot size %ld > reserved memory (%d)\n",
+ len, CFG_MONITOR_LEN);
+ hang ();
+ }
+
+ if (CFG_MONITOR_LEN > len)
+ len = CFG_MONITOR_LEN;
+
+#ifndef CONFIG_VERY_BIG_RAM
+ addr = CFG_SDRAM_BASE + gd->ram_size;
+#else
+ /* only allow stack below 256M */
+ addr = CFG_SDRAM_BASE +
+ (gd->ram_size > 256 << 20) ? 256 << 20 : gd->ram_size;
+#endif
+
+#ifdef CONFIG_PRAM
+ /*
+ * reserve protected RAM
+ */
+ i = getenv_r ("pram", tmp, sizeof (tmp));
+ reg = (i > 0) ? simple_strtoul (tmp, NULL, 10) : CONFIG_PRAM;
+ addr -= (reg << 10); /* size is in kB */
+# ifdef DEBUG
+ printf ("Reserving %ldk for protected RAM at %08lx\n", reg, addr);
+# endif
+#endif /* CONFIG_PRAM */
+
+ /* round down to next 4 kB limit */
+ addr &= ~(4096 - 1);
+#ifdef DEBUG
+ printf ("Top of RAM usable for U-Boot at: %08lx\n", addr);
+#endif
+
+#ifdef CONFIG_LCD
+ /* reserve memory for LCD display (always full pages) */
+ addr = lcd_setmem (addr);
+ gd->fb_base = addr;
+#endif /* CONFIG_LCD */
+
+#if defined(CONFIG_VIDEO) && defined(CONFIG_8xx)
+ /* reserve memory for video display (always full pages) */
+ addr = video_setmem (addr);
+ gd->fb_base = addr;
+#endif /* CONFIG_VIDEO */
+
+ /*
+ * reserve memory for U-Boot code, data & bss
+ * round down to next 4 kB limit
+ */
+ addr -= len;
+ addr &= ~(4096 - 1);
+
+#ifdef DEBUG
+ printf ("Reserving %ldk for U-Boot at: %08lx\n", len >> 10, addr);
+#endif
+
+ /*
+ * reserve memory for malloc() arena
+ */
+ addr_sp = addr - TOTAL_MALLOC_LEN;
+#ifdef DEBUG
+ printf ("Reserving %dk for malloc() at: %08lx\n",
+ TOTAL_MALLOC_LEN >> 10, addr_sp);
+#endif
+
+ /*
+ * (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;
+#ifdef DEBUG
+ printf ("Reserving %d Bytes for Board Info at: %08lx\n",
+ sizeof (bd_t), addr_sp);
+#endif
+ addr_sp -= sizeof (gd_t);
+ id = (gd_t *) addr_sp;
+#ifdef DEBUG
+ printf ("Reserving %d Bytes for Global Data at: %08lx\n",
+ sizeof (gd_t), addr_sp);
+#endif
+
+ /*
+ * 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;
+ *((ulong *) addr_sp)-- = 0;
+ *((ulong *) addr_sp)-- = 0;
+#ifdef DEBUG
+ printf ("Stack Pointer at: %08lx\n", addr_sp);
+#endif
+
+ /*
+ * Save local variables to board info struct
+ */
+
+ bd->bi_memstart = CFG_SDRAM_BASE; /* start of DRAM memory */
+ bd->bi_memsize = gd->ram_size; /* size of DRAM memory in bytes */
+
+#ifdef CONFIG_IP860
+ bd->bi_sramstart = SRAM_BASE; /* start of SRAM memory */
+ bd->bi_sramsize = SRAM_SIZE; /* size of SRAM memory */
+#else
+ bd->bi_sramstart = 0; /* FIXME */ /* start of SRAM memory */
+ bd->bi_sramsize = 0; /* FIXME */ /* size of SRAM memory */
+#endif
+
+#if defined(CONFIG_8xx) || defined(CONFIG_8260)
+ bd->bi_immr_base = CFG_IMMR; /* base of IMMR register */
+#endif
+
+ 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 */
+#if defined(CONFIG_8260)
+ bd->bi_cpmfreq = gd->cpm_clk;
+ bd->bi_brgfreq = gd->brg_clk;
+ bd->bi_sccfreq = gd->scc_clk;
+ bd->bi_vco = gd->vco_out;
+#endif /* CONFIG_8260 */
+
+ bd->bi_baudrate = gd->baudrate; /* Console Baudrate */
+
+#ifdef CFG_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));
+
+ bd->bi_procfreq = gd->cpu_clk; /* Processor Speed, In Hz */
+ bd->bi_plb_busfreq = gd->bus_clk;
+#ifdef CONFIG_405GP
+ bd->bi_pci_busfreq = get_PCI_freq ();
+#endif
+#endif
+
+#ifdef DEBUG
+ printf ("New Stack Pointer is: %08lx\n", addr_sp);
+#endif
+
+ WATCHDOG_RESET ();
+
+#ifdef CONFIG_POST
+ post_bootmode_init();
+ post_run (NULL, POST_ROM | post_bootmode_get(0));
+#endif
+
+ WATCHDOG_RESET();
+
+ memcpy (id, gd, sizeof (gd_t));
+
+ relocate_code (addr_sp, id, addr);
+
+ /* NOTREACHED - relocate_code() 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)
+{
+ DECLARE_GLOBAL_DATA_PTR;
+
+ cmd_tbl_t *cmdtp;
+ char *s, *e;
+ bd_t *bd;
+ int i;
+ extern void malloc_bin_reloc (void);
+#ifndef CFG_ENV_IS_NOWHERE
+ extern char * env_name_spec;
+#endif
+
+#ifndef CFG_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 */
+
+#ifdef DEBUG
+ printf ("Now running in RAM - U-Boot at: %08lx\n", dest_addr);
+#endif
+
+ WATCHDOG_RESET ();
+
+ gd->reloc_off = dest_addr - CFG_MONITOR_BASE;
+
+ /*
+ * We have to relocate the command table manually
+ */
+ for (cmdtp = &cmd_tbl[0]; cmdtp->name; cmdtp++) {
+ ulong addr;
+
+ addr = (ulong) (cmdtp->cmd) + gd->reloc_off;
+#if 0
+ printf ("Command \"%s\": 0x%08lx => 0x%08lx\n",
+ cmdtp->name, (ulong) (cmdtp->cmd), addr);
+#endif
+ cmdtp->cmd =
+ (int (*)(struct cmd_tbl_s *, int, int, char *[]))addr;
+
+ addr = (ulong)(cmdtp->name) + gd->reloc_off;
+ cmdtp->name = (char *)addr;
+
+ if (cmdtp->usage) {
+ addr = (ulong)(cmdtp->usage) + gd->reloc_off;
+ cmdtp->usage = (char *)addr;
+ }
+#ifdef CFG_LONGHELP
+ if (cmdtp->help) {
+ addr = (ulong)(cmdtp->help) + gd->reloc_off;
+ cmdtp->help = (char *)addr;
+ }
+#endif
+ }
+ /* there are some other pointer constants we must deal with */
+#ifndef CFG_ENV_IS_NOWHERE
+ env_name_spec += gd->reloc_off;
+#endif
+
+ WATCHDOG_RESET ();
+
+#ifdef CONFIG_POST
+ post_reloc ();
+#endif
+
+ WATCHDOG_RESET();
+
+#if defined(CONFIG_IP860) || defined(CONFIG_PCU_E) || defined (CONFIG_FLAGADM)
+ icache_enable (); /* it's time to enable the instruction cache */
+#endif
+
+#if defined(CONFIG_BAB7xx)
+ /*
+ * Do pci configuration on BAB 7xx _before_ the flash
+ * is initialised, because we need the ISA bridge there.
+ */
+ pci_init ();
+ /*
+ * Initialise the ISA bridge
+ */
+ initialise_w83c553f ();
+#endif
+
+ asm ("sync ; isync");
+
+ /*
+ * Setup trap handlers
+ */
+ trap_init (dest_addr);
+
+#if !defined(CFG_NO_FLASH)
+ puts ("FLASH: ");
+
+ if ((flash_size = flash_init ()) > 0) {
+#ifdef CFG_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: %08lX",
+ crc32 (0,
+ (const unsigned char *) CFG_FLASH_BASE,
+ flash_size)
+ );
+ }
+ putc ('\n');
+#else
+ print_size (flash_size, "\n");
+#endif /* CFG_FLASH_CHECKSUM */
+ } else {
+ puts (failed);
+ hang ();
+ }
+
+ bd->bi_flashstart = CFG_FLASH_BASE; /* update start of FLASH memory */
+ bd->bi_flashsize = flash_size; /* size of FLASH memory (final value) */
+#if defined(CONFIG_PCU_E) || defined(CONFIG_OXC)
+ bd->bi_flashoffset = 0;
+#elif CFG_MONITOR_BASE == CFG_FLASH_BASE
+ bd->bi_flashoffset = CFG_MONITOR_LEN; /* reserved area for startup monitor */
+#else
+ bd->bi_flashoffset = 0;
+#endif
+#else
+
+ bd->bi_flashsize = 0;
+ bd->bi_flashstart = 0;
+ bd->bi_flashoffset = 0;
+#endif /* !CFG_NO_FLASH */
+
+ WATCHDOG_RESET ();
+
+ /* initialize higher level parts of CPU like time base and timers */
+ cpu_init_r ();
+
+ WATCHDOG_RESET ();
+
+ /* initialize malloc() area */
+ mem_malloc_init ();
+ malloc_bin_reloc ();
+
+#ifdef CONFIG_SPI
+# if !defined(CFG_ENV_IS_IN_EEPROM)
+ spi_init_f ();
+# endif
+ spi_init_r ();
+#endif
+
+ /* relocate environment function pointers etc. */
+ env_relocate ();
+
+ /*
+ * Fill in missing fields of bd_info.
+ * We do this here, where we have "normal" access to the
+ * environment; we used to do this still running from ROM,
+ * where had to use getenv_r(), which can be pretty slow when
+ * the environment is in EEPROM.
+ */
+ s = getenv ("ethaddr");
+#if defined (CONFIG_MBX) || defined (CONFIG_RPXCLASSIC) || defined(CONFIG_IAD210)
+ if (s == NULL)
+ board_get_enetaddr (bd->bi_enetaddr);
+ else
+#endif
+ for (i = 0; i < 6; ++i) {
+ bd->bi_enetaddr[i] = s ? simple_strtoul (s, &e, 16) : 0;
+ if (s)
+ s = (*e) ? e + 1 : e;
+ }
+#ifdef CONFIG_HERMES
+ if ((gd->board_type >> 16) == 2)
+ bd->bi_ethspeed = gd->board_type & 0xFFFF;
+ else
+ bd->bi_ethspeed = 0xFFFF;
+#endif
+
+#ifdef CONFIG_NX823
+ load_sernum_ethaddr ();
+#endif
+
+#if defined(CFG_GT_6426x) || defined(CONFIG_PN62)
+ /* handle the 2nd ethernet address */
+
+ s = getenv ("eth1addr");
+
+ for (i = 0; i < 6; ++i) {
+ bd->bi_enet1addr[i] = s ? simple_strtoul (s, &e, 16) : 0;
+ if (s)
+ s = (*e) ? e + 1 : e;
+ }
+#endif
+#if defined(CFG_GT_6426x)
+ /* handle the 3rd ethernet address */
+
+ s = getenv ("eth2addr");
+
+ for (i = 0; i < 6; ++i) {
+ bd->bi_enet2addr[i] = s ? simple_strtoul (s, &e, 16) : 0;
+ if (s)
+ s = (*e) ? e + 1 : e;
+ }
+#endif
+
+
+#if defined(CONFIG_TQM8xxL) || defined(CONFIG_TQM8260) || \
+ defined(CONFIG_CCM)
+ load_sernum_ethaddr ();
+#endif
+ /* IP Address */
+ bd->bi_ip_addr = getenv_IPaddr ("ipaddr");
+
+ WATCHDOG_RESET ();
+
+#if defined(CONFIG_PCI) && !defined(CONFIG_BAB7xx)
+ /*
+ * Do pci configuration
+ */
+ pci_init ();
+#endif
+
+/** leave this here (after malloc(), environment and PCI are working) **/
+ /* Initialize devices */
+ devices_init ();
+
+ /* allocate syscalls table (console_init_r will fill it in */
+ syscall_tbl = (void **) malloc (NR_SYSCALLS * sizeof (void *));
+
+ /* Initialize the console (after the relocation and devices init) */
+ console_init_r ();
+/** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** **/
+ syscalls_init ();
+
+#if defined(CONFIG_CCM) || \
+ defined(CONFIG_COGENT) || \
+ defined(CONFIG_CPCI405) || \
+ defined(CONFIG_EVB64260) || \
+ defined(CONFIG_HYMOD) || \
+ defined(CONFIG_LWMON) || \
+ defined(CONFIG_PCU_E) || \
+ defined(CONFIG_W7O) || \
+ defined(CONFIG_MISC_INIT_R)
+ /* miscellaneous platform dependent initialisations */
+ misc_init_r ();
+#endif
+
+#ifdef CONFIG_HERMES
+ if (bd->bi_ethspeed != 0xFFFF)
+ hermes_start_lxt980 ((int) bd->bi_ethspeed);
+#endif
+
+#if (CONFIG_COMMANDS & CFG_CMD_NET) && ( \
+ defined(CONFIG_CCM) || \
+ defined(CONFIG_EP8260) || \
+ defined(CONFIG_IP860) || \
+ defined(CONFIG_IVML24) || \
+ defined(CONFIG_IVMS8) || \
+ defined(CONFIG_LWMON) || \
+ defined(CONFIG_MPC8260ADS) || \
+ defined(CONFIG_PCU_E) || \
+ defined(CONFIG_RPXSUPER) || \
+ defined(CONFIG_SPD823TS) )
+
+ WATCHDOG_RESET ();
+# ifdef DEBUG
+ puts ("Reset Ethernet PHY\n");
+# endif
+ reset_phy ();
+#endif
+
+#if (CONFIG_COMMANDS & CFG_CMD_KGDB)
+ WATCHDOG_RESET ();
+ puts ("KGDB: ");
+ kgdb_init ();
+#endif
+
+#ifdef DEBUG
+ printf ("U-Boot relocated to %08lx\n", dest_addr);
+#endif
+
+ /*
+ * Enable Interrupts
+ */
+ interrupt_init ();
+
+ /* Must happen after interrupts are initialized since
+ * an irq handler gets installed
+ */
+#ifdef CONFIG_SERIAL_SOFTWARE_FIFO
+ serial_buffered_init();
+#endif
+
+#ifdef CONFIG_STATUS_LED
+ status_led_set (STATUS_LED_BOOT, STATUS_LED_BLINKING);
+#endif
+
+ udelay (20);
+
+ set_timer (0);
+
+ /* Insert function pointers now that we have relocated the code */
+
+ /* Initialize from environment */
+ if ((s = getenv ("loadaddr")) != NULL) {
+ load_addr = simple_strtoul (s, NULL, 16);
+ }
+#if (CONFIG_COMMANDS & CFG_CMD_NET)
+ if ((s = getenv ("bootfile")) != NULL) {
+ copy_filename (BootFile, s, sizeof (BootFile));
+ }
+#endif /* CFG_CMD_NET */
+
+ WATCHDOG_RESET ();
+
+#if (CONFIG_COMMANDS & CFG_CMD_SCSI)
+ WATCHDOG_RESET ();
+ puts ("SCSI: ");
+ scsi_init ();
+#endif
+
+#if (CONFIG_COMMANDS & CFG_CMD_DOC)
+ WATCHDOG_RESET ();
+ puts ("DOC: ");
+ doc_init ();
+#endif
+
+#if (CONFIG_COMMANDS & CFG_CMD_NET) && defined(CONFIG_NET_MULTI)
+ WATCHDOG_RESET ();
+ puts ("Net: ");
+ eth_initialize (bd);
+#endif
+
+#ifdef CONFIG_POST
+ post_run (NULL, POST_RAM | post_bootmode_get(0));
+ if (post_bootmode_get(0) & POST_POWERFAIL) {
+ post_bootmode_clear();
+ board_poweroff();
+ }
+#endif
+
+#if (CONFIG_COMMANDS & CFG_CMD_PCMCIA) && !(CONFIG_COMMANDS & CFG_CMD_IDE)
+ WATCHDOG_RESET ();
+ puts ("PCMCIA:");
+ pcmcia_init ();
+#endif
+
+#if (CONFIG_COMMANDS & CFG_CMD_IDE)
+ WATCHDOG_RESET ();
+# ifdef CONFIG_IDE_8xx_PCCARD
+ puts ("PCMCIA:");
+# else
+ puts ("IDE: ");
+#endif
+ ide_init ();
+#endif /* CFG_CMD_IDE */
+
+#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 (CONFIG_COMMANDS & CFG_CMD_BEDBUG)
+ WATCHDOG_RESET ();
+ bedbug_init ();
+#endif
+
+#ifdef CONFIG_PRAM
+ /*
+ * Export available size of memory for Linux,
+ * taking into account the protected RAM at top of memory
+ */
+ {
+ ulong pram;
+ char *s;
+ uchar memsz[32];
+
+ if ((s = getenv ("pram")) != NULL) {
+ pram = simple_strtoul (s, NULL, 10);
+ } else {
+ pram = CONFIG_PRAM;
+ }
+ sprintf (memsz, "%ldk", (bd->bi_memsize / 1024) - pram);
+ setenv ("mem", memsz);
+ }
+#endif
+
+ /* 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 (;;);
+}
+
+#if 0 /* We could use plain global data, but the resulting code is bigger */
+/*
+ * Pointer to initial global data area
+ *
+ * Here we initialize it.
+ */
+#undef XTRN_DECLARE_GLOBAL_DATA_PTR
+#define XTRN_DECLARE_GLOBAL_DATA_PTR /* empty = allocate here */
+DECLARE_GLOBAL_DATA_PTR = (gd_t *) (CFG_INIT_RAM_ADDR + CFG_GBL_DATA_OFFSET);
+#endif /* 0 */
+
+/************************************************************************/
diff --git a/lib_ppc/extable.c b/lib_ppc/extable.c
new file mode 100644
index 0000000..2f90df0
--- /dev/null
+++ b/lib_ppc/extable.c
@@ -0,0 +1,83 @@
+/*
+ * Copyright (C) 1999 Magnus Damm <kieraypc01.p.y.kie.era.ericsson.se>
+ *
+ * (C) Copyright 2000
+ * 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>
+
+/*
+ * The exception table consists of pairs of addresses: the first is the
+ * address of an instruction that is allowed to fault, and the second is
+ * the address at which the program should continue. No registers are
+ * modified, so it is entirely up to the continuation code to figure out
+ * what to do.
+ *
+ * All the routines below use bits of fixup code that are out of line
+ * with the main instruction path. This means when everything is well,
+ * we don't even have to jump over them. Further, they do not intrude
+ * on our cache or tlb entries.
+ */
+
+struct exception_table_entry
+{
+ unsigned long insn, fixup;
+};
+
+extern const struct exception_table_entry __start___ex_table[];
+extern const struct exception_table_entry __stop___ex_table[];
+
+static inline unsigned long
+search_one_table(const struct exception_table_entry *first,
+ const struct exception_table_entry *last,
+ unsigned long value)
+{
+ while (first <= last) {
+ const struct exception_table_entry *mid;
+ long diff;
+
+ mid = (last - first) / 2 + first;
+ diff = mid->insn - value;
+ if (diff == 0)
+ return mid->fixup;
+ else if (diff < 0)
+ first = mid+1;
+ else
+ last = mid-1;
+ }
+ return 0;
+}
+
+int ex_tab_message = 1;
+
+unsigned long
+search_exception_table(unsigned long addr)
+{
+ unsigned long ret;
+
+ /* There is only the kernel to search. */
+ ret = search_one_table(__start___ex_table, __stop___ex_table-1, addr);
+ if (ex_tab_message)
+ printf("Bus Fault @ 0x%08lx, fixup 0x%08lx\n", addr, ret);
+ if (ret) return ret;
+
+ return 0;
+}