summaryrefslogtreecommitdiffstats
path: root/lib_m68k
diff options
context:
space:
mode:
authorwdenk <wdenk>2004-02-12 00:47:09 +0000
committerwdenk <wdenk>2004-02-12 00:47:09 +0000
commitbf9e3b38f77c2eac620263dd60437c6ec47a27bf (patch)
treed03891090553d167f3eb08d7f9c3f2532e43fcc2 /lib_m68k
parenta2d18bb7d31e7b971386fef505ff0218f3b6e893 (diff)
downloadblackbird-obmc-uboot-bf9e3b38f77c2eac620263dd60437c6ec47a27bf.tar.gz
blackbird-obmc-uboot-bf9e3b38f77c2eac620263dd60437c6ec47a27bf.zip
* Some code cleanup
* Patch by Josef Baumgartner, 10 Feb 2004: Fixes for Coldfire port * Patch by Brad Kemp, 11 Feb 2004: Fix CFI flash driver problems
Diffstat (limited to 'lib_m68k')
-rw-r--r--lib_m68k/Makefile42
-rw-r--r--lib_m68k/board.c594
-rw-r--r--lib_m68k/cache.c29
-rw-r--r--lib_m68k/extable.c83
-rw-r--r--lib_m68k/m68k_linux.c16
-rw-r--r--lib_m68k/time.c168
-rw-r--r--lib_m68k/traps.c76
7 files changed, 684 insertions, 324 deletions
diff --git a/lib_m68k/Makefile b/lib_m68k/Makefile
new file mode 100644
index 0000000000..698da36e68
--- /dev/null
+++ b/lib_m68k/Makefile
@@ -0,0 +1,42 @@
+#
+# (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 $(TOPDIR)/config.mk
+
+LIB = lib$(ARCH).a
+
+AOBJS =
+COBJS = cache.o traps.o time.o board.o m68k_linux.o
+OBJS = $(AOBJS) $(COBJS)
+
+$(LIB): .depend $(OBJS)
+ $(AR) crv $@ $(OBJS)
+
+#########################################################################
+
+.depend: Makefile $(AOBJS:.o=.S) $(COBJS:.o=.c)
+ $(CC) -M $(CFLAGS) $(AOBJS:.o=.S) $(COBJS:.o=.c) > $@
+
+sinclude .depend
+
+#########################################################################
diff --git a/lib_m68k/board.c b/lib_m68k/board.c
index 0bf637d59d..06b3bd5056 100644
--- a/lib_m68k/board.c
+++ b/lib_m68k/board.c
@@ -1,5 +1,8 @@
/*
- * (C) Copyright 2000-2003
+ * (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
@@ -26,7 +29,11 @@
#include <command.h>
#include <malloc.h>
#include <devices.h>
-#include <syscall.h>
+
+#ifdef CONFIG_M5272
+#include <asm/immap_5272.h>
+#endif
+
#if (CONFIG_COMMANDS & CFG_CMD_IDE)
#include <ide.h>
#endif
@@ -54,18 +61,8 @@ static char *failed = "*** failed ***\n";
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 */
+#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)
@@ -74,12 +71,30 @@ extern flash_info_t flash_info[];
#define TOTAL_MALLOC_LEN CFG_MALLOC_LEN
#endif
+extern ulong __init_end;
+extern ulong _end;
+
+extern void timer_init(void);
+
+#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;
+
/*
* 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;
+static ulong mem_malloc_start = 0;
+static ulong mem_malloc_end = 0;
+static ulong mem_malloc_brk = 0;
/************************************************************************
* Utilities *
@@ -89,13 +104,18 @@ static ulong mem_malloc_brk = 0;
/*
* The Malloc area is immediately below the monitor copy in DRAM
*/
-static void mem_malloc_init (ulong dest_addr)
+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,
+ memset ((void *) mem_malloc_start,
+ 0,
mem_malloc_end - mem_malloc_start);
}
@@ -104,50 +124,106 @@ void *sbrk (ptrdiff_t increment)
ulong old = mem_malloc_brk;
ulong new = old + increment;
- if ((new < mem_malloc_start) || (new > mem_malloc_end)) {
+ if ((new < mem_malloc_start) ||
+ (new > mem_malloc_end) ) {
return (NULL);
}
mem_malloc_brk = new;
- return ((void *) old);
+ return ((void *)old);
}
-char *strmhz (char *buf, long hz)
+char *strmhz(char *buf, long hz)
{
- long l, n;
- long m;
+ long l, n;
+ long m;
- n = hz / 1000000L;
+ n = hz / 1000000L;
- l = sprintf (buf, "%ld", n);
+ l = sprintf (buf, "%ld", n);
- m = (hz % 1000000L) / 1000L;
+ m = (hz % 1000000L) / 1000L;
- if (m != 0)
- sprintf (buf + l, ".%03ld", m);
+ if (m != 0)
+ sprintf (buf+l, ".%03ld", m);
- return (buf);
+ return (buf);
}
-static void syscalls_init (int reloc_off)
+/*
+ * 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)
{
- ulong *addr;
+ 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);
+}
- 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;
+static int init_func_ram (void)
+{
+ DECLARE_GLOBAL_DATA_PTR;
- addr = (ulong *) 0xc00; /* syscall ISR addr */
+ int board_type = 0; /* use dummy arg */
+ puts ("DRAM: ");
- /* patch ISR code */
- *addr++ |= (ulong) syscall_tbl >> 16;
- *addr++ |= (ulong) syscall_tbl & 0xFFFF;
- *addr++ |= NR_SYSCALLS >> 16;
- *addr++ |= NR_SYSCALLS & 0xFFFF;
+ if ((gd->ram_size = initdram (board_type)) > 0) {
+ print_size (gd->ram_size, "\n");
+ return (0);
+ }
+ puts (failed);
+ return (1);
}
+/***********************************************************************/
+
+/************************************************************************
+ * Initialization sequence *
+ ************************************************************************
+ */
+
+init_fnc_t *init_sequence[] = {
+ env_init,
+ init_baudrate,
+ serial_init,
+ console_init_f,
+ display_options,
+ checkcpu,
+ checkboard,
+ init_func_ram,
+#if defined(CFG_DRAM_TEST)
+ testdram,
+#endif /* CFG_DRAM_TEST */
+ INIT_FUNC_WATCHDOG_INIT
+ NULL, /* Terminate this list */
+};
+
+
/************************************************************************
*
* This is the first part of the initialization sequence that is
@@ -164,132 +240,146 @@ static void syscalls_init (int reloc_off)
************************************************************************
*/
-
-gd_t *global_data;
-static gd_t gdata;
-static bd_t bdata;
-
-void board_init_f (ulong bootflag)
+void
+board_init_f (ulong bootflag)
{
- DECLARE_GLOBAL_DATA_PTR;
+ DECLARE_GLOBAL_DATA_PTR;
bd_t *bd;
- ulong reg, len, addr, addr_sp, dram_size;
- int i, baudrate, board_type;
- char *s, *e;
+ 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 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 ();
- }
+ /* Pointer is writable since we allocated a register for it */
+ gd = (gd_t *) (CFG_INIT_RAM_ADDR + CFG_GBL_DATA_OFFSET);
- puts ("DRAM: ");
- if ((dram_size = initdram (board_type)) > 0) {
- printf ("%2ld MB\n", dram_size >> 20);
- } else {
- puts (failed);
- hang ();
- }
+ /* Clear initial global data */
+ memset ((void *) gd, 0, sizeof (gd_t));
-#if defined(CFG_DRAM_TEST)
- if (testdram () != 0) {
- hang ();
+ for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
+ if ((*init_fnc_ptr)() != 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
+ * - protected RAM
+ * - LCD framebuffer
+ * - monitor code
+ * - board info struct
*/
- len = get_endaddr () - CFG_MONITOR_BASE;
+ len = (ulong)&_end - CFG_MONITOR_BASE;
- if (len > CFG_MONITOR_LEN) {
- printf ("*** u-boot size %ld > reserved memory (%d)\n",
- len, CFG_MONITOR_LEN);
- hang ();
- }
+ addr = CFG_SDRAM_BASE + gd->ram_size;
- if (CFG_MONITOR_LEN > len)
- len = CFG_MONITOR_LEN;
+#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
+ */
+ i = getenv_r ("pram", tmp, sizeof (tmp));
+ reg = (i > 0) ? simple_strtoul (tmp, NULL, 10) : CONFIG_PRAM;
+ addr -= (reg << 10); /* size is in kB */
+ debug ("Reserving %ldk for protected RAM at %08lx\n", reg, addr);
+#endif /* CONFIG_PRAM */
- addr = CFG_SDRAM_BASE + dram_size;
+ /*
+ * 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);
/*
- * Save local variables to board info struct
+ * reserve memory for malloc() arena
*/
- 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) */
+ addr_sp = addr - TOTAL_MALLOC_LEN;
+ debug ("Reserving %dk for malloc() at: %08lx\n",
+ TOTAL_MALLOC_LEN >> 10, addr_sp);
- i = getenv_r ("ethaddr", tmp, sizeof (tmp));
- s = (i > 0) ? tmp : NULL;
+ /*
+ * (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 %d Bytes for Board Info at: %08lx\n",
+ sizeof (bd_t), addr_sp);
+ addr_sp -= sizeof (gd_t);
+ id = (gd_t *) addr_sp;
+ debug ("Reserving %d Bytes for Global Data at: %08lx\n",
+ sizeof (gd_t), addr_sp);
+
+ /* Reserve memory for boot params. */
+ addr_sp -= CFG_BOOTPARAMS_LEN;
+ bd->bi_boot_params = addr_sp;
+ debug ("Reserving %dk for boot parameters at: %08lx\n",
+ CFG_BOOTPARAMS_LEN >> 10, addr_sp);
- for (reg = 0; reg < 6; ++reg) {
- bd->bi_enetaddr[reg] = s ? simple_strtoul (s, &e, 16) : 0;
- if (s)
- s = (*e) ? e + 1 : e;
- }
+ /*
+ * 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;
+ debug ("Stack Pointer at: %08lx\n", addr_sp);
- bd->bi_intfreq = get_gclk_freq (); /* Internal Freq, in Hz */
- bd->bi_busfreq = get_bus_freq (get_gclk_freq ()); /* Bus Freq, in Hz */
+ /*
+ * 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 */
+ bd->bi_mbar_base = CFG_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 */
+ 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, PPCBOOT_VERSION,
- sizeof (bd->bi_r_version));
+ strncpy (bd->bi_r_version, U_BOOT_VERSION, sizeof (bd->bi_r_version));
+#endif
+
+ WATCHDOG_RESET ();
- bd->bi_procfreq = get_gclk_freq (); /* Processor Speed, In Hz */
- bd->bi_plb_busfreq = bd->bi_busfreq;
+#ifdef CONFIG_POST
+ post_bootmode_init();
+ post_run (NULL, POST_ROM | post_bootmode_get(0));
#endif
- board_init_final (addr);
+ WATCHDOG_RESET();
-}
+ memcpy (id, (void *)gd, sizeof (gd_t));
+
+ debug ("Start relocate of code from %08x to %08lx\n", CFG_MONITOR_BASE, addr);
+ relocate_code (addr_sp, id, addr);
+ /* NOTREACHED - jump_to_ram() does not return */
+}
/************************************************************************
*
@@ -300,61 +390,123 @@ void board_init_f (ulong bootflag)
*
************************************************************************
*/
-
-void board_init_final (ulong dest_addr)
+void board_init_r (gd_t *id, ulong dest_addr)
{
DECLARE_GLOBAL_DATA_PTR;
- char *s;
cmd_tbl_t *cmdtp;
- ulong flash_size;
+ 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;
- /* icache_enable(); /XX* it's time to enable the instruction cache */
+
+ gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
+
+ debug ("Now running in RAM - U-Boot at: %08lx\n", dest_addr);
+
+ WATCHDOG_RESET ();
+
+ gd->reloc_off = dest_addr - CFG_MONITOR_BASE;
+
+ monitor_flash_len = (ulong)&__init_end - dest_addr;
+
+ /*
+ * We have to relocate the command table manually
+ */
+ for (cmdtp = &__u_boot_cmd_start; cmdtp != &__u_boot_cmd_end; 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_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 (dest_addr);
+ trap_init (0);
+#if !defined(CFG_NO_FLASH)
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);
- }
+# 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
+ * 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)
- );
+ 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 /* !CFG_FLASH_CHECKSUM */
+ 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) */
- bd->bi_flashoffset = 0x10000; /* reserved area for startup monitor */
+ 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 = 0;
+#else /* CFG_NO_FLASH */
+ bd->bi_flashsize = 0;
+ bd->bi_flashstart = 0;
+ bd->bi_flashoffset = 0;
+#endif /* !CFG_NO_FLASH */
WATCHDOG_RESET ();
@@ -364,7 +516,8 @@ void board_init_final (ulong dest_addr)
WATCHDOG_RESET ();
/* initialize malloc() area */
- mem_malloc_init (dest_addr);
+ mem_malloc_init ();
+ malloc_bin_reloc ();
#ifdef CONFIG_SPI
# if !defined(CFG_ENV_IS_IN_EEPROM)
@@ -376,36 +529,35 @@ void board_init_final (ulong dest_addr)
/* 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");
+ for (i = 0; i < 6; ++i) {
+ bd->bi_enetaddr[i] = s ? simple_strtoul (s, &e, 16) : 0;
+ if (s)
+ s = (*e) ? e + 1 : e;
+ }
+
/* 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) */
+ /** leave this here (after malloc(), environment and PCI are working) **/
+ /* Initialize devices */
+ 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
+ /* Initialize the jump table for applications */
+ jumptable_init ();
+ /* Initialize the console (after the relocation and devices init) */
+ console_init_r ();
#if (CONFIG_COMMANDS & CFG_CMD_KGDB)
WATCHDOG_RESET ();
@@ -413,11 +565,28 @@ void board_init_final (ulong dest_addr)
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_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 */
@@ -434,10 +603,25 @@ void board_init_final (ulong dest_addr)
WATCHDOG_RESET ();
-#if (CONFIG_COMMANDS & CFG_CMD_NET) && defined(CONFIG_NET_MULTI)
+#if (CONFIG_COMMANDS & CFG_CMD_DOC)
+ WATCHDOG_RESET ();
+ puts ("DOC: ");
+ doc_init ();
+#endif
+
+#if (CONFIG_COMMANDS & CFG_CMD_NAND)
WATCHDOG_RESET ();
- puts ("Net: ");
- eth_initialize (bd);
+ puts ("NAND:");
+ nand_init(); /* go init the NAND */
+#endif
+
+#if (CONFIG_COMMANDS & CFG_CMD_NET) && defined(FEC_ENET)
+ WATCHDOG_RESET();
+ eth_init(bd);
+#endif
+
+#ifdef CONFIG_POST
+ post_run (NULL, POST_RAM | post_bootmode_get(0));
#endif
#ifdef CONFIG_LAST_STAGE_INIT
@@ -455,26 +639,51 @@ void board_init_final (ulong dest_addr)
bedbug_init ();
#endif
-#ifdef CONFIG_PRAM
+#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;
- char *s;
uchar memsz[32];
+#ifdef CONFIG_PRAM
+ char *s;
if ((s = getenv ("pram")) != NULL) {
pram = simple_strtoul (s, NULL, 10);
} else {
pram = CONFIG_PRAM;
}
+#else
+ pram=0;
+#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. */
@@ -486,7 +695,8 @@ void board_init_final (ulong dest_addr)
/* NOTREACHED - no way out of command loop except booting */
}
-void hang (void)
+
+void hang(void)
{
puts ("### ERROR ### Please RESET the board ###\n");
for (;;);
diff --git a/lib_m68k/cache.c b/lib_m68k/cache.c
new file mode 100644
index 0000000000..84fb6c2fbc
--- /dev/null
+++ b/lib_m68k/cache.c
@@ -0,0 +1,29 @@
+/*
+ * (C) Copyright 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>
+
+void flush_cache (ulong start_addr, ulong size)
+{
+ /* Must be implemented for all M68k processors with copy-back data cache */
+}
diff --git a/lib_m68k/extable.c b/lib_m68k/extable.c
deleted file mode 100644
index afbc1ebb85..0000000000
--- a/lib_m68k/extable.c
+++ /dev/null
@@ -1,83 +0,0 @@
-/*
- * 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
index b20393d011..a32de1a907 100644
--- a/lib_m68k/m68k_linux.c
+++ b/lib_m68k/m68k_linux.c
@@ -12,26 +12,25 @@
*
* 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
+ * 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
+ * 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
+#define LINUX_MAX_ENVS 256
+#define LINUX_MAX_ARGS 256
#ifdef CONFIG_SHOW_BOOT_PROGRESS
# include <status_led.h>
@@ -42,6 +41,8 @@
extern image_header_t header; /* from cmd_bootm.c */
+extern int do_reset (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]);
+
static int linux_argc;
static char **linux_argv;
@@ -52,7 +53,6 @@ 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)
{
@@ -123,9 +123,9 @@ void do_bootm_linux (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[],
SHOW_BOOT_PROGRESS (11);
if ((hdr->ih_os != IH_OS_LINUX) ||
- (hdr->ih_arch != IH_CPU_MIPS) ||
+ (hdr->ih_arch != IH_CPU_M68K) ||
(hdr->ih_type != IH_TYPE_RAMDISK)) {
- printf ("No Linux MIPS Ramdisk Image\n");
+ printf ("No Linux M68K Ramdisk Image\n");
SHOW_BOOT_PROGRESS (-13);
do_reset (cmdtp, flag, argc, argv);
}
diff --git a/lib_m68k/time.c b/lib_m68k/time.c
index 5fc2751216..0b85411dd8 100644
--- a/lib_m68k/time.c
+++ b/lib_m68k/time.c
@@ -1,5 +1,7 @@
/*
- * (C) Copyright 2000-2003
+ * (C) Copyright 2003 Josef Baumgartner <josef.baumgartner@telex.de>
+ *
+ * (C) Copyright 2000
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* See file CREDITS for list of people who contributed to this
@@ -12,7 +14,7 @@
*
* 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
+ * 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
@@ -23,65 +25,149 @@
#include <common.h>
+#include <asm/mcftimer.h>
+
+#ifdef CONFIG_M5272
+#include <asm/m5272.h>
+#include <asm/immap_5272.h>
+#endif
+
+#ifdef CONFIG_M5282
+#include <asm/m5282.h>
+#endif
+
+
+static ulong timestamp;
+#ifdef CONFIG_M5282
+static unsigned short lastinc;
+#endif
-/* ------------------------------------------------------------------------- */
+#if defined(CONFIG_M5272)
/*
- * This function is intended for SHORT delays only.
- * It will overflow at around 10 seconds @ 400MHz,
- * or 20 seconds @ 200MHz.
+ * We use timer 3 which is running with a period of 1 us
*/
-unsigned long usec2ticks(unsigned long usec)
+void udelay(unsigned long usec)
{
- ulong ticks;
+ volatile timer_t *timerp = (timer_t *) (CFG_MBAR + MCFTIMER_BASE3);
+ uint start, now, tmp;
+
+ while (usec > 0) {
+ if (usec > 65000)
+ tmp = 65000;
+ else
+ tmp = usec;
+ usec = usec - tmp;
+
+ /* Set up TIMER 3 as timebase clock */
+ timerp->timer_tmr = MCFTIMER_TMR_DISABLE;
+ timerp->timer_tcn = 0;
+ /* set period to 1 us */
+ timerp->timer_tmr = (((CFG_CLK / 1000000) - 1) << 8) | MCFTIMER_TMR_CLK1 |
+ MCFTIMER_TMR_FREERUN | MCFTIMER_TMR_ENABLE;
+
+ start = now = timerp->timer_tcn;
+ while (now < start + tmp)
+ now = timerp->timer_tcn;
+ }
+}
+
+void mcf_timer_interrupt (void * not_used){
+ volatile timer_t *timerp = (timer_t *) (CFG_MBAR + MCFTIMER_BASE4);
+ volatile intctrl_t *intp = (intctrl_t *) (CFG_MBAR + MCFSIM_ICR1);
- if (usec < 1000) {
- ticks = ((usec * (get_tbclk()/1000)) + 500) / 1000;
- } else {
- ticks = ((usec / 10) * (get_tbclk() / 100000));
+ /* check for timer 4 interrupts */
+ if ((intp->int_isr & 0x01000000) != 0) {
+ return;
}
- return (ticks);
+ /* reset timer */
+ timerp->timer_ter = MCFTIMER_TER_CAP | MCFTIMER_TER_REF;
+ timestamp ++;
}
-/* ------------------------------------------------------------------------- */
+void timer_init (void) {
+ volatile timer_t *timerp = (timer_t *) (CFG_MBAR + MCFTIMER_BASE4);
+ volatile intctrl_t *intp = (intctrl_t *) (CFG_MBAR + MCFSIM_ICR1);
-/*
- * 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)
+ timestamp = 0;
+
+ /* Set up TIMER 4 as clock */
+ timerp->timer_tmr = MCFTIMER_TMR_DISABLE;
+
+ /* initialize and enable timer 4 interrupt */
+ irq_install_handler (72, mcf_timer_interrupt, 0);
+ intp->int_icr1 |= 0x0000000d;
+
+ timerp->timer_tcn = 0;
+ timerp->timer_trr = 1000; /* Interrupt every ms */
+ /* set a period of 1us, set timer mode to restart and enable timer and interrupt */
+ timerp->timer_tmr = (((CFG_CLK / 1000000) - 1) << 8) | MCFTIMER_TMR_CLK1 |
+ MCFTIMER_TMR_RESTART | MCFTIMER_TMR_ENORI | MCFTIMER_TMR_ENABLE;
+}
+
+void reset_timer (void)
{
- ulong ticks = usec2ticks (usec);
+ timestamp = 0;
+}
- wait_ticks (ticks);
+ulong get_timer (ulong base)
+{
+ return (timestamp - base);
}
-/* ------------------------------------------------------------------------- */
+void set_timer (ulong t)
+{
+ timestamp = t;
+}
+#endif
-unsigned long ticks2usec(unsigned long ticks)
+#if defined(CONFIG_M5282)
+
+void udelay(unsigned long usec)
{
- 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);
}
-/* ------------------------------------------------------------------------- */
+void timer_init (void)
+{
+ volatile unsigned short *timerp;
+
+ timerp = (volatile unsigned short *) (CFG_MBAR + MCFTIMER_BASE4);
+ timestamp = 0;
+
+ /* Set up TIMER 4 as poll clock */
+ timerp[MCFTIMER_PCSR] = MCFTIMER_PCSR_OVW;
+ timerp[MCFTIMER_PMR] = lastinc = 0;
+ timerp[MCFTIMER_PCSR] =
+ (5 << 8) | MCFTIMER_PCSR_EN | MCFTIMER_PCSR_OVW;
+}
-int init_timebase (void)
+void set_timer (ulong t)
{
- /* FIXME!! */
- return 0;
+ volatile unsigned short *timerp;
+
+ timerp = (volatile unsigned short *) (CFG_MBAR + MCFTIMER_BASE4);
+ timestamp = 0;
+ timerp[MCFTIMER_PMR] = lastinc = 0;
+}
+
+ulong get_timer (ulong base)
+{
+ unsigned short now, diff;
+ volatile unsigned short *timerp;
+
+ timerp = (volatile unsigned short *) (CFG_MBAR + MCFTIMER_BASE4);
+ now = timerp[MCFTIMER_PCNTR];
+ diff = -(now - lastinc);
+
+ timestamp += diff;
+ lastinc = now;
+ return timestamp - base;
}
-/* ------------------------------------------------------------------------- */
+void wait_ticks (unsigned long ticks)
+{
+ set_timer (0);
+ while (get_timer (0) < ticks);
+}
+#endif
diff --git a/lib_m68k/traps.c b/lib_m68k/traps.c
new file mode 100644
index 0000000000..1ca94dc55f
--- /dev/null
+++ b/lib_m68k/traps.c
@@ -0,0 +1,76 @@
+/*
+ * (C) Copyright 2003
+ * Josef Baumgartner <josef.baumgartner@telex.de>
+ *
+ * (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>
+#include <watchdog.h>
+#include <command.h>
+#include <asm/processor.h>
+
+
+extern void _exc_handler(void);
+extern void _int_handler(void);
+
+static void show_frame(struct pt_regs *fp)
+{
+ printf ("Vector Number: %d Format: %02x Fault Status: %01x\n\n", (fp->vector & 0x3fc) >> 2,
+ fp->format, (fp->vector & 0x3) | ((fp->vector & 0xc00) >> 8));
+ printf ("PC: %08lx SR: %08lx SP: %08lx\n", fp->pc, (long) fp->sr, (long) fp);
+ printf ("D0: %08lx D1: %08lx D2: %08lx D3: %08lx\n",
+ fp->d0, fp->d1, fp->d2, fp->d3);
+ printf ("D4: %08lx D5: %08lx D6: %08lx D7: %08lx\n",
+ fp->d4, fp->d5, fp->d6, fp->d7);
+ printf ("A0: %08lx A1: %08lx A2: %08lx A3: %08lx\n",
+ fp->a0, fp->a1, fp->a2, fp->a3);
+ printf ("A4: %08lx A5: %08lx A6: %08lx\n",
+ fp->a4, fp->a5, fp->a6);
+}
+
+void exc_handler(struct pt_regs *fp) {
+ printf("\n\n*** Unexpected exception ***\n");
+ show_frame (fp);
+ printf("\n*** Please Reset Board! ***\n");
+ for(;;);
+}
+
+void trap_init(ulong value) {
+ unsigned long *vec = (ulong *)value;
+ int i;
+
+ for(i = 2; i < 25; i++) {
+ vec[i] = (unsigned long)_exc_handler;
+ }
+ for(i = 25; i < 32; i++) {
+ vec[i] = (unsigned long)_int_handler;
+ }
+ for(i = 32; i < 64; i++) {
+ vec[i] = (unsigned long)_exc_handler;
+ }
+ for(i = 64; i < 256; i++) {
+ vec[i] = (unsigned long)_int_handler;
+ }
+
+ setvbr(value); /* set vector base register to new table */
+}
OpenPOWER on IntegriCloud