/*
* (C) Copyright 2002
- * Daniel Engström, Omicron Ceti AB, daniel@omicron.se
+ * Daniel Engstr�m, Omicron Ceti AB, daniel@omicron.se
*
* (C) Copyright 2002
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
#include <common.h>
#include <watchdog.h>
#include <command.h>
-#include <devices.h>
+#include <stdio_dev.h>
+#include <timestamp.h>
#include <version.h>
#include <malloc.h>
#include <net.h>
#include <ide.h>
#include <asm/u-boot-i386.h>
+#include <elf.h>
-DECLARE_GLOBAL_DATA_PTR;
-
-extern long _i386boot_start;
-extern long _i386boot_end;
-extern long _i386boot_romdata_start;
-extern long _i386boot_romdata_dest;
-extern long _i386boot_romdata_size;
-extern long _i386boot_bss_start;
-extern long _i386boot_bss_size;
-
-extern long _i386boot_realmode;
-extern long _i386boot_realmode_size;
-extern long _i386boot_bios;
-extern long _i386boot_bios_size;
-
-/* The symbols defined by the linker script becomes pointers
- * which is somewhat inconveient ... */
-ulong i386boot_start = (ulong)&_i386boot_start; /* code start (in flash) defined in start.S */
-ulong i386boot_end = (ulong)&_i386boot_end; /* code end (in flash) */
-ulong i386boot_romdata_start = (ulong)&_i386boot_romdata_start; /* datasegment in flash (also code+rodata end) */
-ulong i386boot_romdata_dest = (ulong)&_i386boot_romdata_dest; /* data location segment in ram */
-ulong i386boot_romdata_size = (ulong)&_i386boot_romdata_size; /* size of data segment */
-ulong i386boot_bss_start = (ulong)&_i386boot_bss_start; /* bss start */
-ulong i386boot_bss_size = (ulong)&_i386boot_bss_size; /* bss size */
-
-ulong i386boot_realmode = (ulong)&_i386boot_realmode; /* start of realmode entry code */
-ulong i386boot_realmode_size = (ulong)&_i386boot_realmode_size; /* size of realmode entry code */
-ulong i386boot_bios = (ulong)&_i386boot_bios; /* start of BIOS emulation code */
-ulong i386boot_bios_size = (ulong)&_i386boot_bios_size; /* size of BIOS emulation code */
+#ifdef CONFIG_BITBANGMII
+#include <miiphy.h>
+#endif
+DECLARE_GLOBAL_DATA_PTR;
+/* Exports from the Linker Script */
+extern ulong _i386boot_text_start;
+extern ulong _i386boot_rel_dyn_start;
+extern ulong _i386boot_rel_dyn_end;
+extern ulong _i386boot_bss_start;
+extern ulong _i386boot_bss_size;
+void ram_bootstrap (void *);
const char version_string[] =
- U_BOOT_VERSION" (" __DATE__ " - " __TIME__ ")";
-
-
-/*
- * 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 int mem_malloc_init(void)
-{
- /* start malloc area right after the stack */
- mem_malloc_start = i386boot_bss_start +
- i386boot_bss_size + CFG_STACK_SIZE;
- mem_malloc_start = (mem_malloc_start+3)&~3;
-
- /* Use all available RAM for malloc() */
- mem_malloc_end = gd->ram_size;
-
- mem_malloc_brk = mem_malloc_start;
-
- return 0;
-}
-
-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);
-}
+ U_BOOT_VERSION" (" U_BOOT_DATE " - " U_BOOT_TIME ")";
/************************************************************************
* Init Utilities *
{
printf ("\n\n%s\n\n", version_string);
+/*
printf ("U-Boot code: %08lX -> %08lX data: %08lX -> %08lX\n"
" BSS: %08lX -> %08lX stack: %08lX -> %08lX\n",
i386boot_start, i386boot_romdata_start-1,
i386boot_romdata_dest, i386boot_romdata_dest+i386boot_romdata_size-1,
i386boot_bss_start, i386boot_bss_start+i386boot_bss_size-1,
i386boot_bss_start+i386boot_bss_size,
- i386boot_bss_start+i386boot_bss_size+CFG_STACK_SIZE-1);
+ i386boot_bss_start+i386boot_bss_size+CONFIG_SYS_STACK_SIZE-1);
+*/
return (0);
}
print_size (size, "\n");
}
-
/*
* Breath some life into the board...
*
* can relocate the monitor code to RAM.
*/
+
/*
* All attempts to come up with a "common" initialization sequence
* that works for all boards and architectures failed: some of the
typedef int (init_fnc_t) (void);
init_fnc_t *init_sequence[] = {
- cpu_init, /* basic cpu dependent setup */
- board_init, /* basic board dependent setup */
+ serial_init,
+ cpu_init_r, /* basic cpu dependent setup */
+ board_early_init_r, /* basic board dependent setup */
dram_init, /* configure available RAM banks */
- mem_malloc_init, /* dependant on dram_init */
interrupt_init, /* set up exceptions */
timer_init,
- serial_init,
env_init, /* initialize environment */
init_baudrate, /* initialze baudrate settings */
serial_init, /* serial communications setup */
NULL,
};
-gd_t *global_data;
+gd_t *gd;
-void start_i386boot (void)
+/*
+ * Load U-Boot into RAM, initialize BSS, perform relocation adjustments
+ */
+void board_init_f (ulong stack_limit)
+{
+ void *text_start = &_i386boot_text_start;
+ void *u_boot_cmd_end = &__u_boot_cmd_end;
+ Elf32_Rel *rel_dyn_start = (Elf32_Rel *)&_i386boot_rel_dyn_start;
+ Elf32_Rel *rel_dyn_end = (Elf32_Rel *)&_i386boot_rel_dyn_end;
+ void *bss_start = &_i386boot_bss_start;
+ void *bss_size = &_i386boot_bss_size;
+
+ size_t uboot_size;
+ void *ram_start;
+ ulong rel_offset;
+ Elf32_Rel *re;
+
+ void (*start_func)(void *);
+
+ /* compiler optimization barrier needed for GCC >= 3.4 */
+ __asm__ __volatile__("": : :"memory");
+
+ uboot_size = (size_t)u_boot_cmd_end - (size_t)text_start;
+ ram_start = (void *)stack_limit - (uboot_size + (ulong)bss_size);
+ rel_offset = text_start - ram_start;
+ start_func = ram_bootstrap - rel_offset;
+
+ /* First stage CPU initialization */
+ if (cpu_init_f() != 0)
+ hang();
+
+ /* First stage Board initialization */
+ if (board_early_init_f() != 0)
+ hang();
+
+ /* Copy U-Boot into RAM */
+ memcpy(ram_start, text_start, (size_t)uboot_size);
+
+ /* Clear BSS */
+ memset(bss_start - rel_offset, 0, (size_t)bss_size);
+
+ /* Perform relocation adjustments */
+ for (re = rel_dyn_start; re < rel_dyn_end; re++)
+ {
+ if (re->r_offset >= TEXT_BASE)
+ if (*(ulong *)re->r_offset >= TEXT_BASE)
+ *(ulong *)(re->r_offset - rel_offset) -= (Elf32_Addr)rel_offset;
+ }
+
+ start_func(ram_start);
+
+ /* NOTREACHED - relocate_code() does not return */
+ while(1);
+}
+
+/*
+ * All attempts to jump straight from board_init_f() to board_init_r()
+ * have failed, hence this special 'bootstrap' function.
+ */
+void ram_bootstrap (void *ram_start)
+{
+ static gd_t gd_data;
+
+ /* compiler optimization barrier needed for GCC >= 3.4 */
+ __asm__ __volatile__("": : :"memory");
+
+ board_init_r(&gd_data, (ulong)ram_start);
+}
+
+void board_init_r(gd_t *id, ulong ram_start)
{
char *s;
int i;
ulong size;
- static gd_t gd_data;
static bd_t bd_data;
init_fnc_t **init_fnc_ptr;
show_boot_progress(0x21);
- gd = global_data = &gd_data;
+ gd = id;
/* compiler optimization barrier needed for GCC >= 3.4 */
__asm__ __volatile__("": : :"memory");
gd->baudrate = CONFIG_BAUDRATE;
+ gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
+
+ mem_malloc_init((((ulong)ram_start - CONFIG_SYS_MALLOC_LEN)+3)&~3,
+ CONFIG_SYS_MALLOC_LEN);
+
for (init_fnc_ptr = init_sequence, i=0; *init_fnc_ptr; ++init_fnc_ptr, i++) {
show_boot_progress(0xa130|i);
/* IP Address */
bd_data.bi_ip_addr = getenv_IPaddr ("ipaddr");
- /* MAC Address */
- {
- int i;
- ulong reg;
- char *s, *e;
- uchar tmp[64];
-
- i = getenv_r ("ethaddr", tmp, sizeof (tmp));
- s = (i > 0) ? tmp : NULL;
-
- for (reg = 0; reg < 6; ++reg) {
- bd_data.bi_enetaddr[reg] = s ? simple_strtoul (s, &e, 16) : 0;
- if (s)
- s = (*e) ? e + 1 : e;
- }
- }
-
#if defined(CONFIG_PCI)
/*
* Do pci configuration
show_boot_progress(0x27);
- devices_init ();
+ stdio_init ();
jumptable_init ();
doc_init();
#endif
+#ifdef CONFIG_BITBANGMII
+ bb_miiphy_init();
+#endif
#if defined(CONFIG_CMD_NET)
#if defined(CONFIG_NET_MULTI)
WATCHDOG_RESET();
puts ("### ERROR ### Please RESET the board ###\n");
for (;;);
}
+
+unsigned long do_go_exec (ulong (*entry)(int, char *[]), int argc, char *argv[])
+{
+ /*
+ * TODO: Test this function - changed to fix compiler error.
+ * Original code was:
+ * return (entry >> 1) (argc, argv);
+ * with a comment about Nios function pointers are address >> 1
+ */
+ return (entry) (argc, argv);
+}
projects / platform / kernel / u-boot.git / blobdiff