diff options
| author | Anson Huang <Anson.Huang@nxp.com> | 2019-11-22 14:24:03 +0800 |
|---|---|---|
| committer | Anson Huang <Anson.Huang@nxp.com> | 2019-12-13 10:45:48 +0800 |
| commit | 8443529e9ade148e2aee258a0d1cda6e8eaf1f85 (patch) | |
| tree | 36b3ae31f3d190df24ad423fdf8f9a5f901c4e77 /bl31 | |
| parent | e0ab18940626c53eb24b46eb26bbf7aefc1ce97f (diff) | |
imx: initialize register value before writting MU_SR register
MU_SR register bit[30] is cold boot flag passed from SCU,
w0 is random value and would clear the flag incorrectly,
and cause system partition reboot fail if Linux is in suspend.
So this patch initializes it to 0x80000000 which is exactly
the same with first time board power up before writting to MU_SR
register.
Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Diffstat (limited to 'bl31')
| -rw-r--r-- | bl31/aarch64/bl31_entrypoint.S | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/bl31/aarch64/bl31_entrypoint.S b/bl31/aarch64/bl31_entrypoint.S index 5ee7a840..22426430 100644 --- a/bl31/aarch64/bl31_entrypoint.S +++ b/bl31/aarch64/bl31_entrypoint.S @@ -25,6 +25,7 @@ func bl31_entrypoint #ifdef PLAT_imx8qm ldr x21, stm + ldr w20, =0x80000000 str w20, [x21] str w20, [x21] str w20, [x21] |