summaryrefslogtreecommitdiff
path: root/common/board_r.c
diff options
context:
space:
mode:
authorAlexey Brodkin <abrodkin@synopsys.com>2014-01-20 14:30:39 +0400
committerTom Rini <trini@ti.com>2014-01-27 08:28:13 -0500
commit7395398ad273f11569f4c4f3fb45219b916480eb (patch)
tree29968b1fa5bcd5582831adbe200be9ae4b6c3bb2 /common/board_r.c
parent2b36fe579c975f0e47761e5fcb602b8ae4537c6e (diff)
downloadu-boot-imx-7395398ad273f11569f4c4f3fb45219b916480eb.zip
u-boot-imx-7395398ad273f11569f4c4f3fb45219b916480eb.tar.gz
u-boot-imx-7395398ad273f11569f4c4f3fb45219b916480eb.tar.bz2
board_r - fixup functions table after relocation
This is only required for "PIC" relocation and doesn't apply to modern "PIE" relocation which does data relocation as well as code. "init_sequence_r" is just an array that consists of compile-time adresses of init functions. Since this is basically an array of integers (pointers to "void" to be more precise) it won't be modified during relocation - it will be just copied to new location as it is. As a consequence on execution after relocation "initcall_run_list" will be jumping to pre-relocation addresses. As long as we don't overwrite pre-relocation memory area init calls are executed correctly. But still it is dangerous because after relocation we don't expect initially used memory to stay untouched. Cc: Tom Rini <trini@ti.com> Cc: Masahiro Yamada <yamada.m@jp.panasonic.com> Cc: Doug Anderson <dianders@chromium.org> Cc: Thomas Langer <thomas.langer@lantiq.com> Cc: Albert ARIBAUD <albert.u.boot@aribaud.net> Acked-by: Simon Glass <sjg@chromium.org> Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Diffstat (limited to 'common/board_r.c')
-rw-r--r--common/board_r.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/common/board_r.c b/common/board_r.c
index 86ca1cb..c2d0763 100644
--- a/common/board_r.c
+++ b/common/board_r.c
@@ -903,9 +903,19 @@ init_fnc_t init_sequence_r[] = {
void board_init_r(gd_t *new_gd, ulong dest_addr)
{
+#ifdef CONFIG_NEEDS_MANUAL_RELOC
+ int i;
+#endif
+
#ifndef CONFIG_X86
gd = new_gd;
#endif
+
+#ifdef CONFIG_NEEDS_MANUAL_RELOC
+ for (i = 0; i < ARRAY_SIZE(init_sequence_r); i++)
+ init_sequence_r[i] += gd->reloc_off;
+#endif
+
if (initcall_run_list(init_sequence_r))
hang();