| Message ID | 1368525030-5162-3-git-send-email-albert.u.boot@aribaud.net |
|---|---|
| State | Superseded |
| Delegated to: | Albert ARIBAUD |
| Headers | show |
Hi Albert, On Tuesday, May 14, 2013 11:50:28 AM, Albert ARIBAUD wrote: > Signed-off-by: Albert ARIBAUD <albert.u.boot@aribaud.net> > --- > Changes in v2: > - dropped relocate_code() call from tx25 SPL > > board/karo/tx25/tx25.c | 16 +++++++++++++++- > 1 file changed, 15 insertions(+), 1 deletion(-) > > diff --git a/board/karo/tx25/tx25.c b/board/karo/tx25/tx25.c > index 2952eba..461e21f 100644 > --- a/board/karo/tx25/tx25.c > +++ b/board/karo/tx25/tx25.c > @@ -35,7 +35,21 @@ DECLARE_GLOBAL_DATA_PTR; > #ifdef CONFIG_SPL_BUILD > void board_init_f(ulong bootflag) > { > - relocate_code(CONFIG_SPL_TEXT_BASE); > + /* > + * copy ourselves from where we are running to where we were > + * linked at. Use ulong pointers as all addresses involved > + * are 4-byte-aligned. > + */ > + ulong *start_ptr, *end_ptr, *link_ptr, *run_ptr, *dst; > + asm volatile ("ldr %0, =_start" : "=r"(start_ptr)); > + asm volatile ("ldr %0, =_end" : "=r"(end_ptr)); Same question as for mx31pdk. > + asm volatile ("ldr %0, =board_init_f" : "=r"(link_ptr)); > + asm volatile ("adr %0, board_init_f" : "=r"(run_ptr)); > + for (dst = start_ptr; dst < end_ptr; dst++) > + *dst = *(dst+(run_ptr-link_ptr)); > + /* > + * branch to nand_boot's link-time address. > + */ > asm volatile("ldr pc, =nand_boot"); > } > #endif > -- > 1.7.10.4 Best regards, Benoît
diff --git a/board/karo/tx25/tx25.c b/board/karo/tx25/tx25.c index 2952eba..461e21f 100644 --- a/board/karo/tx25/tx25.c +++ b/board/karo/tx25/tx25.c @@ -35,7 +35,21 @@ DECLARE_GLOBAL_DATA_PTR; #ifdef CONFIG_SPL_BUILD void board_init_f(ulong bootflag) { - relocate_code(CONFIG_SPL_TEXT_BASE); + /* + * copy ourselves from where we are running to where we were + * linked at. Use ulong pointers as all addresses involved + * are 4-byte-aligned. + */ + ulong *start_ptr, *end_ptr, *link_ptr, *run_ptr, *dst; + asm volatile ("ldr %0, =_start" : "=r"(start_ptr)); + asm volatile ("ldr %0, =_end" : "=r"(end_ptr)); + asm volatile ("ldr %0, =board_init_f" : "=r"(link_ptr)); + asm volatile ("adr %0, board_init_f" : "=r"(run_ptr)); + for (dst = start_ptr; dst < end_ptr; dst++) + *dst = *(dst+(run_ptr-link_ptr)); + /* + * branch to nand_boot's link-time address. + */ asm volatile("ldr pc, =nand_boot"); } #endif
Signed-off-by: Albert ARIBAUD <albert.u.boot@aribaud.net> --- Changes in v2: - dropped relocate_code() call from tx25 SPL board/karo/tx25/tx25.c | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-)