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-rw-r--r--lib_m68k/board.c493
-rw-r--r--lib_m68k/extable.c83
-rw-r--r--lib_m68k/m68k_linux.c274
-rw-r--r--lib_m68k/time.c87
4 files changed, 937 insertions, 0 deletions
diff --git a/lib_m68k/board.c b/lib_m68k/board.c
new file mode 100644
index 0000000..b4c6119
--- /dev/null
+++ b/lib_m68k/board.c
@@ -0,0 +1,493 @@
+/*
+ * (C) Copyright 2000-2003
+ * 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>
+#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>
+
+static char *failed = "*** failed ***\n";
+
+#ifdef CONFIG_PCU_E
+extern flash_info_t flash_info[];
+#endif
+
+#if defined(CFG_ENV_IS_IN_FLASH)
+# ifndef CFG_ENV_ADDR
+# define CFG_ENV_ADDR (CFG_FLASH_BASE + CFG_ENV_OFFSET)
+# endif
+# ifndef CFG_ENV_SIZE
+# define CFG_ENV_SIZE CFG_ENV_SECT_SIZE
+# endif
+# if (CFG_ENV_ADDR >= CFG_MONITOR_BASE) && \
+ (CFG_ENV_ADDR+CFG_ENV_SIZE) < (CFG_MONITOR_BASE + CFG_MONITOR_LEN)
+# define ENV_IS_EMBEDDED
+# endif
+#endif /* CFG_ENV_IS_IN_FLASH */
+#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 (ulong dest_addr)
+{
+ 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 (int reloc_off)
+{
+ ulong *addr;
+
+ addr = (ulong *) syscall_tbl;
+ 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;
+}
+
+/************************************************************************
+ *
+ * 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.
+ *
+ ************************************************************************
+ */
+
+
+gd_t *global_data;
+static gd_t gdata;
+static bd_t bdata;
+
+void board_init_f (ulong bootflag)
+{
+ DECLARE_GLOBAL_DATA_PTR;
+
+ bd_t *bd;
+ ulong reg, len, addr, addr_sp, dram_size;
+ int i, baudrate, board_type;
+ char *s, *e;
+ uchar tmp[64]; /* long enough for environment variables */
+
+ /* Pointer to initial global data area */
+ gd = global_data = &gdata;
+ bd = gd->bd = &bdata;
+
+ init_timebase ();
+ env_init ();
+
+ i = getenv_r ("baudrate", tmp, sizeof (tmp));
+ baudrate =
+ (i > 0) ? (int) simple_strtoul (tmp, NULL,
+ 10) : CONFIG_BAUDRATE;
+ bd->bi_baudrate = baudrate; /* Console Baudrate */
+
+ /* set up serial port */
+ serial_init ();
+
+ /* Initialize the console (before the relocation) */
+ console_init_f ();
+
+#ifdef DEBUG
+ if (sizeof (init_data_t) > CFG_INIT_DATA_SIZE) {
+ printf ("PANIC: sizeof(init_data_t)=%d > CFG_INIT_DATA_SIZE=%d\n", sizeof (init_data_t), CFG_INIT_DATA_SIZE);
+ hang ();
+ }
+#endif /* DEBUG */
+
+ /* now we can use standard printf/puts/getc/tstc functions */
+ display_options ();
+
+ puts ("CPU: "); /* Check CPU */
+ if (checkcpu () < 0) {
+ puts (failed);
+ hang ();
+ }
+
+ puts ("Board: "); /* Check Board */
+ if ((board_type = checkboard ()) < 0) {
+ puts (failed);
+ hang ();
+ }
+
+ puts ("DRAM: ");
+ if ((dram_size = initdram (board_type)) > 0) {
+ printf ("%2ld MB\n", dram_size >> 20);
+ } else {
+ puts (failed);
+ hang ();
+ }
+
+#if defined(CFG_DRAM_TEST)
+ if (testdram () != 0) {
+ hang ();
+ }
+#endif /* CFG_DRAM_TEST */
+
+ /*
+ * 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;
+
+ addr = CFG_SDRAM_BASE + dram_size;
+ addr -= len;
+
+ /*
+ * Save local variables to board info struct
+ */
+ bd->bi_memstart = CFG_SDRAM_BASE; /* start of DRAM memory */
+ bd->bi_memsize = dram_size; /* size of DRAM memory in bytes */
+ bd->bi_bootflags = bootflag; /* boot / reboot flag (for LynxOS) */
+
+ i = getenv_r ("ethaddr", tmp, sizeof (tmp));
+ s = (i > 0) ? tmp : NULL;
+
+ for (reg = 0; reg < 6; ++reg) {
+ bd->bi_enetaddr[reg] = s ? simple_strtoul (s, &e, 16) : 0;
+ if (s)
+ s = (*e) ? e + 1 : e;
+ }
+
+ bd->bi_intfreq = get_gclk_freq (); /* Internal Freq, in Hz */
+ bd->bi_busfreq = get_bus_freq (get_gclk_freq ()); /* Bus Freq, in Hz */
+
+#ifdef CFG_EXTBDINFO
+ strncpy (bd->bi_s_version, "1.2", sizeof (bd->bi_s_version));
+ strncpy (bd->bi_r_version, PPCBOOT_VERSION,
+ sizeof (bd->bi_r_version));
+
+ bd->bi_procfreq = get_gclk_freq (); /* Processor Speed, In Hz */
+ bd->bi_plb_busfreq = bd->bi_busfreq;
+#endif
+
+ board_init_final (addr);
+
+}
+
+
+/************************************************************************
+ *
+ * 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_final (ulong dest_addr)
+{
+ DECLARE_GLOBAL_DATA_PTR;
+ char *s;
+ cmd_tbl_t *cmdtp;
+ ulong flash_size;
+ bd_t *bd;
+
+ bd = gd->bd;
+ // icache_enable(); /* it's time to enable the instruction cache */
+
+ /*
+ * Setup trap handlers
+ */
+ trap_init (dest_addr);
+
+ puts ("FLASH: ");
+
+ if ((flash_size = flash_init ()) > 0) {
+#ifdef CFG_FLASH_CHECKSUM
+ if (flash_size >= (1 << 20)) {
+ printf ("%2ld MB", flash_size >> 20);
+ } else {
+ printf ("%2ld kB", flash_size >> 10);
+ }
+ /*
+ * 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
+ if (flash_size >= (1 << 20)) {
+ printf ("%2ld MB\n", flash_size >> 20);
+ } else {
+ printf ("%2ld kB\n", flash_size >> 10);
+ }
+#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) */
+ bd->bi_flashoffset = 0x10000; /* reserved area for startup monitor */
+
+ WATCHDOG_RESET ();
+
+ /* initialize higher level parts of CPU like time base and timers */
+ cpu_init_r ();
+
+ WATCHDOG_RESET ();
+
+ /* initialize malloc() area */
+ mem_malloc_init (dest_addr);
+
+#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 ();
+
+ /* IP Address */
+ bd->bi_ip_addr = getenv_IPaddr ("ipaddr");
+
+ WATCHDOG_RESET ();
+
+ /* 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) */
+
+
+#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
+
+ /*
+ * Enable Interrupts
+ */
+ interrupt_init ();
+ 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_NET) && defined(CONFIG_NET_MULTI)
+ WATCHDOG_RESET ();
+ puts ("Net: ");
+ eth_initialize (bd);
+#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 (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 (;;);
+}
diff --git a/lib_m68k/extable.c b/lib_m68k/extable.c
new file mode 100644
index 0000000..afbc1eb
--- /dev/null
+++ b/lib_m68k/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;
+}
diff --git a/lib_m68k/m68k_linux.c b/lib_m68k/m68k_linux.c
new file mode 100644
index 0000000..b20393d
--- /dev/null
+++ b/lib_m68k/m68k_linux.c
@@ -0,0 +1,274 @@
+/*
+ * (C) Copyright 2003
+ * 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 <command.h>
+#include <cmd_boot.h>
+#include <image.h>
+#include <zlib.h>
+#include <asm/byteorder.h>
+
+#define PHYSADDR(x) x
+
+#define LINUX_MAX_ENVS 256
+#define LINUX_MAX_ARGS 256
+
+#ifdef CONFIG_SHOW_BOOT_PROGRESS
+# include <status_led.h>
+# define SHOW_BOOT_PROGRESS(arg) show_boot_progress(arg)
+#else
+# define SHOW_BOOT_PROGRESS(arg)
+#endif
+
+extern image_header_t header; /* from cmd_bootm.c */
+
+static int linux_argc;
+static char **linux_argv;
+
+static char **linux_env;
+static char *linux_env_p;
+static int linux_env_idx;
+
+static void linux_params_init (ulong start, char *commandline);
+static void linux_env_set (char *env_name, char *env_val);
+
+
+void do_bootm_linux (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[],
+ ulong addr, ulong * len_ptr, int verify)
+{
+ DECLARE_GLOBAL_DATA_PTR;
+
+ ulong len = 0, checksum;
+ ulong initrd_start, initrd_end;
+ ulong data;
+ void (*theKernel) (int, char **, char **, int *);
+ image_header_t *hdr = &header;
+ char *commandline = getenv ("bootargs");
+ char env_buf[12];
+
+ theKernel =
+ (void (*)(int, char **, char **, int *)) ntohl (hdr->ih_ep);
+
+ /*
+ * Check if there is an initrd image
+ */
+ if (argc >= 3) {
+ SHOW_BOOT_PROGRESS (9);
+
+ addr = simple_strtoul (argv[2], NULL, 16);
+
+ printf ("## Loading Ramdisk Image at %08lx ...\n", addr);
+
+ /* Copy header so we can blank CRC field for re-calculation */
+ memcpy (&header, (char *) addr, sizeof (image_header_t));
+
+ if (ntohl (hdr->ih_magic) != IH_MAGIC) {
+ printf ("Bad Magic Number\n");
+ SHOW_BOOT_PROGRESS (-10);
+ do_reset (cmdtp, flag, argc, argv);
+ }
+
+ data = (ulong) & header;
+ len = sizeof (image_header_t);
+
+ checksum = ntohl (hdr->ih_hcrc);
+ hdr->ih_hcrc = 0;
+
+ if (crc32 (0, (char *) data, len) != checksum) {
+ printf ("Bad Header Checksum\n");
+ SHOW_BOOT_PROGRESS (-11);
+ do_reset (cmdtp, flag, argc, argv);
+ }
+
+ SHOW_BOOT_PROGRESS (10);
+
+ print_image_hdr (hdr);
+
+ data = addr + sizeof (image_header_t);
+ len = ntohl (hdr->ih_size);
+
+ if (verify) {
+ ulong csum = 0;
+
+ printf (" Verifying Checksum ... ");
+ csum = crc32 (0, (char *) data, len);
+ if (csum != ntohl (hdr->ih_dcrc)) {
+ printf ("Bad Data CRC\n");
+ SHOW_BOOT_PROGRESS (-12);
+ do_reset (cmdtp, flag, argc, argv);
+ }
+ printf ("OK\n");
+ }
+
+ SHOW_BOOT_PROGRESS (11);
+
+ if ((hdr->ih_os != IH_OS_LINUX) ||
+ (hdr->ih_arch != IH_CPU_MIPS) ||
+ (hdr->ih_type != IH_TYPE_RAMDISK)) {
+ printf ("No Linux MIPS Ramdisk Image\n");
+ SHOW_BOOT_PROGRESS (-13);
+ do_reset (cmdtp, flag, argc, argv);
+ }
+
+ /*
+ * Now check if we have a multifile image
+ */
+ } else if ((hdr->ih_type == IH_TYPE_MULTI) && (len_ptr[1])) {
+ ulong tail = ntohl (len_ptr[0]) % 4;
+ int i;
+
+ SHOW_BOOT_PROGRESS (13);
+
+ /* skip kernel length and terminator */
+ data = (ulong) (&len_ptr[2]);
+ /* skip any additional image length fields */
+ for (i = 1; len_ptr[i]; ++i)
+ data += 4;
+ /* add kernel length, and align */
+ data += ntohl (len_ptr[0]);
+ if (tail) {
+ data += 4 - tail;
+ }
+
+ len = ntohl (len_ptr[1]);
+
+ } else {
+ /*
+ * no initrd image
+ */
+ SHOW_BOOT_PROGRESS (14);
+
+ data = 0;
+ }
+
+#ifdef DEBUG
+ if (!data) {
+ printf ("No initrd\n");
+ }
+#endif
+
+ if (data) {
+ initrd_start = data;
+ initrd_end = initrd_start + len;
+ } else {
+ initrd_start = 0;
+ initrd_end = 0;
+ }
+
+ SHOW_BOOT_PROGRESS (15);
+
+#ifdef DEBUG
+ printf ("## Transferring control to Linux (at address %08lx) ...\n",
+ (ulong) theKernel);
+#endif
+
+ linux_params_init (PHYSADDR (gd->bd->bi_boot_params), commandline);
+
+ sprintf (env_buf, "%lu", gd->ram_size >> 20);
+ linux_env_set ("memsize", env_buf);
+
+ sprintf (env_buf, "0x%08X", (uint) PHYSADDR (initrd_start));
+ linux_env_set ("initrd_start", env_buf);
+
+ sprintf (env_buf, "0x%X", (uint) (initrd_end - initrd_start));
+ linux_env_set ("initrd_size", env_buf);
+
+ sprintf (env_buf, "0x%08X", (uint) (gd->bd->bi_flashstart));
+ linux_env_set ("flash_start", env_buf);
+
+ sprintf (env_buf, "0x%X", (uint) (gd->bd->bi_flashsize));
+ linux_env_set ("flash_size", env_buf);
+
+ /* we assume that the kernel is in place */
+ printf ("\nStarting kernel ...\n\n");
+
+ theKernel (linux_argc, linux_argv, linux_env, 0);
+}
+
+static void linux_params_init (ulong start, char *line)
+{
+ char *next, *quote, *argp;
+
+ linux_argc = 1;
+ linux_argv = (char **) start;
+ linux_argv[0] = 0;
+ argp = (char *) (linux_argv + LINUX_MAX_ARGS);
+
+ next = line;
+
+ while (line && *line && linux_argc < LINUX_MAX_ARGS) {
+ quote = strchr (line, '"');
+ next = strchr (line, ' ');
+
+ while (next != NULL && quote != NULL && quote < next) {
+ /* we found a left quote before the next blank
+ * now we have to find the matching right quote
+ */
+ next = strchr (quote + 1, '"');
+ if (next != NULL) {
+ quote = strchr (next + 1, '"');
+ next = strchr (next + 1, ' ');
+ }
+ }
+
+ if (next == NULL) {
+ next = line + strlen (line);
+ }
+
+ linux_argv[linux_argc] = argp;
+ memcpy (argp, line, next - line);
+ argp[next - line] = 0;
+
+ argp += next - line + 1;
+ linux_argc++;
+
+ if (*next)
+ next++;
+
+ line = next;
+ }
+
+ linux_env = (char **) (((ulong) argp + 15) & ~15);
+ linux_env[0] = 0;
+ linux_env_p = (char *) (linux_env + LINUX_MAX_ENVS);
+ linux_env_idx = 0;
+}
+
+static void linux_env_set (char *env_name, char *env_val)
+{
+ if (linux_env_idx < LINUX_MAX_ENVS - 1) {
+ linux_env[linux_env_idx] = linux_env_p;
+
+ strcpy (linux_env_p, env_name);
+ linux_env_p += strlen (env_name);
+
+ strcpy (linux_env_p, "=");
+ linux_env_p += 1;
+
+ strcpy (linux_env_p, env_val);
+ linux_env_p += strlen (env_val);
+
+ linux_env_p++;
+ linux_env[++linux_env_idx] = 0;
+ }
+}
diff --git a/lib_m68k/time.c b/lib_m68k/time.c
new file mode 100644
index 0000000..5fc2751
--- /dev/null
+++ b/lib_m68k/time.c
@@ -0,0 +1,87 @@
+/*
+ * (C) Copyright 2000-2003
+ * 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>
+
+
+/* ------------------------------------------------------------------------- */
+
+/*
+ * This function is intended for SHORT delays only.
+ * It will overflow at around 10 seconds @ 400MHz,
+ * or 20 seconds @ 200MHz.
+ */
+unsigned long usec2ticks(unsigned long usec)
+{
+ ulong ticks;
+
+ if (usec < 1000) {
+ ticks = ((usec * (get_tbclk()/1000)) + 500) / 1000;
+ } else {
+ ticks = ((usec / 10) * (get_tbclk() / 100000));
+ }
+
+ return (ticks);
+}
+
+/* ------------------------------------------------------------------------- */
+
+/*
+ * We implement the delay by converting the delay (the number of
+ * microseconds to wait) into a number of time base ticks; then we
+ * watch the time base until it has incremented by that amount.
+ */
+void udelay(unsigned long usec)
+{
+ ulong ticks = usec2ticks (usec);
+
+ wait_ticks (ticks);
+}
+
+/* ------------------------------------------------------------------------- */
+
+unsigned long ticks2usec(unsigned long ticks)
+{
+ ulong tbclk = get_tbclk();
+
+ /* usec = ticks * 1000000 / tbclk
+ * Multiplication would overflow at ~4.2e3 ticks,
+ * so we break it up into
+ * usec = ( ( ticks * 1000) / tbclk ) * 1000;
+ */
+ ticks *= 1000L;
+ ticks /= tbclk;
+ ticks *= 1000L;
+
+ return ((ulong)ticks);
+}
+
+/* ------------------------------------------------------------------------- */
+
+int init_timebase (void)
+{
+ /* FIXME!! */
+ return 0;
+}
+
+/* ------------------------------------------------------------------------- */
generated by cgit v1.1 at 2024-11-06 02:52:17 +0000