| Message ID | 3b24a5ce5ecd00f8d48654ee2eff8340e2827169.1699856600.git.ysato@users.sourceforge.jp (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | Device Tree support for SH7751 based board | expand |
On 11/14/23 10:59 AM, Yoshinori Sato wrote: > R4 is caller saved in SH ABI. > Save it so it doesn't get corrupted until it's needed for initialization. > > Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp> > --- > arch/sh/boot/compressed/head_32.S | 5 +++-- > 1 file changed, 3 insertions(+), 2 deletions(-) > > diff --git a/arch/sh/boot/compressed/head_32.S b/arch/sh/boot/compressed/head_32.S > index 7bb168133dbb..b5ff297145b6 100644 > --- a/arch/sh/boot/compressed/head_32.S > +++ b/arch/sh/boot/compressed/head_32.S > @@ -15,7 +15,8 @@ startup: > /* Load initial status register */ > mov.l init_sr, r1 > ldc r1, sr > - > + /* Save FDT address */ > + mov r4, r13 > /* Move myself to proper location if necessary */ > mova 1f, r0 > mov.l 1f, r2 > @@ -84,7 +85,7 @@ l1: > /* Jump to the start of the decompressed kernel */ > mov.l kernel_start_addr, r0 > jmp @r0 > - nop > + mov r13,r4 Space after comma still missing... [...] MBR, Sergey
diff --git a/arch/sh/boot/compressed/head_32.S b/arch/sh/boot/compressed/head_32.S index 7bb168133dbb..b5ff297145b6 100644 --- a/arch/sh/boot/compressed/head_32.S +++ b/arch/sh/boot/compressed/head_32.S @@ -15,7 +15,8 @@ startup: /* Load initial status register */ mov.l init_sr, r1 ldc r1, sr - + /* Save FDT address */ + mov r4, r13 /* Move myself to proper location if necessary */ mova 1f, r0 mov.l 1f, r2 @@ -84,7 +85,7 @@ l1: /* Jump to the start of the decompressed kernel */ mov.l kernel_start_addr, r0 jmp @r0 - nop + mov r13,r4 .align 2 bss_start_addr:
R4 is caller saved in SH ABI. Save it so it doesn't get corrupted until it's needed for initialization. Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp> --- arch/sh/boot/compressed/head_32.S | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)