* Patch by Bernhard Kuhn, 28 Nov 2003:
add support for Coldfire CPU
add support for Motorola M5272C3 and M5282EVB boards
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 (;;);
+}