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authorGraeme Russ <graeme.russ@gmail.com>2009-02-24 21:14:56 +1100
committerWolfgang Denk <wd@denx.de>2009-03-20 22:39:13 +0100
commite17ee157ca9ff0d4cc5841d06c4b70c1603df29c (patch)
treeb86269e5e8d1b944250fdf4b98d3bed066ba7f92 /lib_i386
parent8c63d47651f77d9fb887cad433370b866eb0a193 (diff)
Add basic relocation to i386 port
Signed-off-by: Graeme Russ <graeme.russ@gmail.com>
Diffstat (limited to 'lib_i386')
-rw-r--r--lib_i386/board.c27
-rw-r--r--lib_i386/interrupts.c4
-rw-r--r--lib_i386/timer.c2
3 files changed, 30 insertions, 3 deletions
diff --git a/lib_i386/board.c b/lib_i386/board.c
index 29683ee26..e18dfa5bc 100644
--- a/lib_i386/board.c
+++ b/lib_i386/board.c
@@ -225,6 +225,9 @@ void start_i386boot (void)
static bd_t bd_data;
init_fnc_t **init_fnc_ptr;
+#ifndef CONFIG_SKIP_RELOCATE_UBOOT
+ cmd_tbl_t *p;
+#endif
show_boot_progress(0x21);
gd = &gd_data;
@@ -238,6 +241,10 @@ void start_i386boot (void)
gd->baudrate = CONFIG_BAUDRATE;
+#ifndef CONFIG_SKIP_RELOCATE_UBOOT
+ /* Need to set relocation offset here for interrupt initialization */
+ gd->reloc_off = CONFIG_SYS_BL_START_RAM - TEXT_BASE;
+#endif
for (init_fnc_ptr = init_sequence, i=0; *init_fnc_ptr; ++init_fnc_ptr, i++) {
show_boot_progress(0xa130|i);
@@ -247,6 +254,26 @@ void start_i386boot (void)
}
show_boot_progress(0x23);
+#ifndef CONFIG_SKIP_RELOCATE_UBOOT
+ for (p = &__u_boot_cmd_start; p != &__u_boot_cmd_end; p++) {
+ ulong addr;
+ addr = (ulong) (p->cmd) + gd->reloc_off;
+ p->cmd = (int (*)(struct cmd_tbl_s *, int, int, char *[]))addr;
+ addr = (ulong)(p->name) + gd->reloc_off;
+ p->name = (char *)addr;
+
+ if (p->usage != NULL) {
+ addr = (ulong)(p->usage) + gd->reloc_off;
+ p->usage = (char *)addr;
+ }
+ #ifdef CONFIG_SYS_LONGHELP
+ if (p->help != NULL) {
+ addr = (ulong)(p->help) + gd->reloc_off;
+ p->help = (char *)addr;
+ }
+ #endif
+ }
+#endif
/* configure available FLASH banks */
size = flash_init();
display_flash_config(size);
diff --git a/lib_i386/interrupts.c b/lib_i386/interrupts.c
index b0f84de4e..3f3613a2f 100644
--- a/lib_i386/interrupts.c
+++ b/lib_i386/interrupts.c
@@ -70,12 +70,12 @@ void irq_install_handler(int irq, interrupt_handler_t *handler, void *arg)
if (irq_handlers[irq].handler != NULL)
printf("irq_install_handler: 0x%08lx replacing 0x%08lx\n",
- (ulong) handler,
+ (ulong) handler + gd->reloc_off,
(ulong) irq_handlers[irq].handler);
status = disable_interrupts ();
- irq_handlers[irq].handler = handler;
+ irq_handlers[irq].handler = handler + gd->reloc_off;
irq_handlers[irq].arg = arg;
irq_handlers[irq].count = 0;
diff --git a/lib_i386/timer.c b/lib_i386/timer.c
index 5cb1f54fb..58a0212ad 100644
--- a/lib_i386/timer.c
+++ b/lib_i386/timer.c
@@ -51,7 +51,7 @@ int register_timer_isr (timer_fnc_t *isr_func)
if (new_func == NULL)
return 1;
- new_func->isr_func = isr_func;
+ new_func->isr_func = isr_func + gd->reloc_off;
new_func->next = NULL;
/*