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-rw-r--r--arch/i386/lib/bios_setup.c14
-rw-r--r--arch/i386/lib/board.c119
-rw-r--r--arch/i386/lib/realmode.c14
-rw-r--r--arch/i386/lib/zimage.c18
4 files changed, 82 insertions, 83 deletions
diff --git a/arch/i386/lib/bios_setup.c b/arch/i386/lib/bios_setup.c
index a92b77ea23..75407c173c 100644
--- a/arch/i386/lib/bios_setup.c
+++ b/arch/i386/lib/bios_setup.c
@@ -45,8 +45,8 @@ DECLARE_GLOBAL_DATA_PTR;
#define BIOS_BASE ((char*)0xf0000)
#define BIOS_CS 0xf000
-extern ulong _i386boot_bios;
-extern ulong _i386boot_bios_size;
+extern ulong __bios_start;
+extern ulong __bios_size;
/* these are defined in a 16bit segment and needs
* to be accessed with the RELOC_16_xxxx() macros below
@@ -141,8 +141,8 @@ static void setvector(int vector, u16 segment, void *handler)
int bios_setup(void)
{
- ulong i386boot_bios = (ulong)&_i386boot_bios + gd->reloc_off;
- ulong i386boot_bios_size = (ulong)&_i386boot_bios_size;
+ ulong bios_start = (ulong)&__bios_start + gd->reloc_off;
+ ulong bios_size = (ulong)&__bios_size;
static int done=0;
int vector;
@@ -154,13 +154,13 @@ int bios_setup(void)
}
done = 1;
- if (i386boot_bios_size > 65536) {
+ if (bios_size > 65536) {
printf("BIOS too large (%ld bytes, max is 65536)\n",
- i386boot_bios_size);
+ bios_size);
return -1;
}
- memcpy(BIOS_BASE, (void*)i386boot_bios, i386boot_bios_size);
+ memcpy(BIOS_BASE, (void*)bios_start, bios_size);
/* clear bda */
memset(BIOS_DATA, 0, BIOS_DATA_SIZE);
diff --git a/arch/i386/lib/board.c b/arch/i386/lib/board.c
index 5002203ec8..1129918fe2 100644
--- a/arch/i386/lib/board.c
+++ b/arch/i386/lib/board.c
@@ -48,13 +48,12 @@
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 *, ulong);
+extern ulong __text_start;
+extern ulong __data_end;
+extern ulong __rel_dyn_start;
+extern ulong __rel_dyn_end;
+extern ulong __bss_start;
+extern ulong __bss_end;
const char version_string[] =
U_BOOT_VERSION" (" U_BOOT_DATE " - " U_BOOT_TIME ")";
@@ -164,85 +163,77 @@ init_fnc_t *init_sequence[] = {
NULL,
};
-static gd_t gd_data;
gd_t *gd;
/*
* Load U-Boot into RAM, initialize BSS, perform relocation adjustments
*/
-void board_init_f (ulong stack_limit)
+void board_init_f (ulong gdp)
{
- 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;
- ulong bss_size = (ulong)&_i386boot_bss_size;
-
- ulong uboot_size;
+ void *text_start = &__text_start;
+ void *data_end = &__data_end;
+ void *rel_dyn_start = &__rel_dyn_start;
+ void *rel_dyn_end = &__rel_dyn_end;
+ void *bss_start = &__bss_start;
+ void *bss_end = &__bss_end;
+
+ ulong *dst_addr;
+ ulong *src_addr;
+ ulong *end_addr;
+
void *dest_addr;
ulong rel_offset;
- Elf32_Rel *re;
+ Elf32_Rel *re_src;
+ Elf32_Rel *re_end;
- void (*start_func)(void *, ulong);
-
- uboot_size = (ulong)u_boot_cmd_end - (ulong)text_start;
- dest_addr = (void *)stack_limit - (uboot_size + (ulong)bss_size);
+ /* Calculate destination RAM Address and relocation offset */
+ dest_addr = (void *)gdp - (bss_end - text_start);
rel_offset = text_start - dest_addr;
- start_func = ram_bootstrap - rel_offset;
- /* First stage CPU initialization */
- if (cpu_init_f() != 0)
- hang();
+ /* Perform low-level initialization only when cold booted */
+ if (((gd_t *)gdp)->flags & GD_FLG_COLD_BOOT) {
+ /* First stage CPU initialization */
+ if (cpu_init_f() != 0)
+ hang();
- /* First stage Board initialization */
- if (board_early_init_f() != 0)
- hang();
+ /* First stage Board initialization */
+ if (board_early_init_f() != 0)
+ hang();
+ }
/* Copy U-Boot into RAM */
- memcpy(dest_addr, text_start, uboot_size);
+ dst_addr = (ulong *)dest_addr;
+ src_addr = (ulong *)(text_start + ((gd_t *)gdp)->load_off);
+ end_addr = (ulong *)(data_end + ((gd_t *)gdp)->load_off);
+
+ while (src_addr < end_addr)
+ *dst_addr++ = *src_addr++;
/* Clear BSS */
- memset(bss_start - rel_offset, 0, bss_size);
+ dst_addr = (ulong *)(bss_start - rel_offset);
+ end_addr = (ulong *)(bss_end - rel_offset);
+
+ while (dst_addr < end_addr)
+ *dst_addr++ = 0x00000000;
/* 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;
- }
+ re_src = (Elf32_Rel *)(rel_dyn_start + ((gd_t *)gdp)->load_off);
+ re_end = (Elf32_Rel *)(rel_dyn_end + ((gd_t *)gdp)->load_off);
- /* Enter the relocated U-Boot! */
- start_func(dest_addr, rel_offset);
- /* NOTREACHED - board_init_f() does not return */
- while(1);
-}
+ do {
+ if (re_src->r_offset >= TEXT_BASE)
+ if (*(Elf32_Addr *)(re_src->r_offset - rel_offset) >= TEXT_BASE)
+ *(Elf32_Addr *)(re_src->r_offset - rel_offset) -= rel_offset;
+ } while (re_src++ < re_end);
-/*
- * We cannot initialize gd_data in board_init_f() because we would be
- * attempting to write to flash (I have even tried using manual relocation
- * adjustments on pointers but it just won't work) and board_init_r() does
- * not have enough arguments to allow us to pass the relocation offset
- * straight up. This bootstrap function (which runs in RAM) is used to
- * setup gd_data in order to pass the relocation offset to the rest of
- * U-Boot.
- *
- * TODO: The compiler optimization barrier is intended to stop GCC from
- * optimizing this function into board_init_f(). It seems to work without
- * it, but I've left it in to be sure. I think also that the barrier in
- * board_init_r() is no longer needed, but left it in 'just in case'
- */
-void ram_bootstrap (void *dest_addr, ulong rel_offset)
-{
- /* compiler optimization barrier needed for GCC >= 3.4 */
- __asm__ __volatile__("": : :"memory");
+ ((gd_t *)gdp)->reloc_off = rel_offset;
+ ((gd_t *)gdp)->flags |= GD_FLG_RELOC;
- /* tell others: relocation done */
- gd_data.reloc_off = rel_offset;
- gd_data.flags |= GD_FLG_RELOC;
+ /* Enter the relocated U-Boot! */
+ (board_init_r - rel_offset)((gd_t *)gdp, (ulong)dest_addr);
- board_init_r(&gd_data, (ulong)dest_addr);
+ /* NOTREACHED - board_init_f() does not return */
+ while(1);
}
void board_init_r(gd_t *id, ulong dest_addr)
diff --git a/arch/i386/lib/realmode.c b/arch/i386/lib/realmode.c
index b3f51230a5..60fe1816a1 100644
--- a/arch/i386/lib/realmode.c
+++ b/arch/i386/lib/realmode.c
@@ -31,23 +31,23 @@
#define REALMODE_MAILBOX ((char*)0xe00)
-extern ulong _i386boot_realmode;
-extern ulong _i386boot_realmode_size;
+extern ulong __realmode_start;
+extern ulong __realmode_size;
extern char realmode_enter;
int realmode_setup(void)
{
- ulong i386boot_realmode = (ulong)&_i386boot_realmode + gd->reloc_off;
- ulong i386boot_realmode_size = (ulong)&_i386boot_realmode_size;
+ ulong realmode_start = (ulong)&__realmode_start + gd->reloc_off;
+ ulong realmode_size = (ulong)&__realmode_size;
/* copy the realmode switch code */
- if (i386boot_realmode_size > (REALMODE_MAILBOX-REALMODE_BASE)) {
+ if (realmode_size > (REALMODE_MAILBOX-REALMODE_BASE)) {
printf("realmode switch too large (%ld bytes, max is %d)\n",
- i386boot_realmode_size, (REALMODE_MAILBOX-REALMODE_BASE));
+ realmode_size, (REALMODE_MAILBOX-REALMODE_BASE));
return -1;
}
- memcpy(REALMODE_BASE, (void*)i386boot_realmode, i386boot_realmode_size);
+ memcpy(REALMODE_BASE, (void*)realmode_start, realmode_size);
asm("wbinvd\n");
return 0;
diff --git a/arch/i386/lib/zimage.c b/arch/i386/lib/zimage.c
index 89fe015e6e..0c42072691 100644
--- a/arch/i386/lib/zimage.c
+++ b/arch/i386/lib/zimage.c
@@ -248,7 +248,8 @@ void boot_zimage(void *setup_base)
int do_zboot (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
void *base_ptr;
- void *bzImage_addr;
+ void *bzImage_addr = NULL;
+ char *s;
ulong bzImage_size = 0;
disable_interrupts();
@@ -256,10 +257,17 @@ int do_zboot (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
/* Setup board for maximum PC/AT Compatibility */
setup_pcat_compatibility();
- /* argv[1] holds the address of the bzImage */
- bzImage_addr = (void *)simple_strtoul(argv[1], NULL, 16);
+ if (argc >= 2)
+ /* argv[1] holds the address of the bzImage */
+ s = argv[1];
+ else
+ s = getenv("fileaddr");
+
+ if (s)
+ bzImage_addr = (void *)simple_strtoul(s, NULL, 16);
- if (argc == 3)
+ if (argc >= 3)
+ /* argv[2] holds the size of the bzImage */
bzImage_size = simple_strtoul(argv[2], NULL, 16);
/* Lets look for*/
@@ -282,7 +290,7 @@ int do_zboot (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
}
U_BOOT_CMD(
- zboot, 3, 0, do_zboot,
+ zboot, 2, 0, do_zboot,
"Boot bzImage",
""
);
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