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| author | Anup Patel <anup.patel@wdc.com> | 2019-12-27 06:24:24 +0300 |
|---|---|---|
| committer | Anup Patel <anup@brainfault.org> | 2019-12-27 06:24:24 +0300 |
| commit | 9beb57362fd36ffc47e901625357add249e4f101 (patch) | |
| tree | 8757c2f1e35cf7e114efdecc5f99b9d752cdeda6 /firmware | |
| parent | c7d1b12199a11f8dcccb631a742eb31c79f8d0d2 (diff) | |
| download | opensbi-9beb57362fd36ffc47e901625357add249e4f101.tar.xz | |
firmware: Improve comments for fw_prev_arg1() and fw_next_arg1()
The state of a0, a1, and a2 registers in fw_prev_arg1() and
fw_next_arg1() is same as passed by previous booting stage
so we add this info in comments for both these functions.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Diffstat (limited to 'firmware')
| -rw-r--r-- | firmware/fw_dynamic.S | 4 | ||||
| -rw-r--r-- | firmware/fw_jump.S | 4 | ||||
| -rw-r--r-- | firmware/fw_payload.S | 4 |
3 files changed, 12 insertions, 0 deletions
diff --git a/firmware/fw_dynamic.S b/firmware/fw_dynamic.S index ba9394d..192698a 100644 --- a/firmware/fw_dynamic.S +++ b/firmware/fw_dynamic.S @@ -91,6 +91,8 @@ fw_save_info: .global fw_prev_arg1 /* * We can only use a0, a1, and a2 registers here. + * The a0, a1, and a2 registers will be same as passed by + * previous booting stage. * The previous arg1 should be returned in 'a0'. */ fw_prev_arg1: @@ -102,6 +104,8 @@ fw_prev_arg1: .global fw_next_arg1 /* * We can only use a0, a1, and a2 registers here. + * The a0, a1, and a2 registers will be same as passed by + * previous booting stage. * The next arg1 should be returned in 'a0'. */ fw_next_arg1: diff --git a/firmware/fw_jump.S b/firmware/fw_jump.S index 0015a80..e0a3b53 100644 --- a/firmware/fw_jump.S +++ b/firmware/fw_jump.S @@ -39,6 +39,8 @@ fw_save_info: .global fw_prev_arg1 /* * We can only use a0, a1, and a2 registers here. + * The a0, a1, and a2 registers will be same as passed by + * previous booting stage. * The previous arg1 should be returned in 'a0'. */ fw_prev_arg1: @@ -50,6 +52,8 @@ fw_prev_arg1: .global fw_next_arg1 /* * We can only use a0, a1, and a2 registers here. + * The a0, a1, and a2 registers will be same as passed by + * previous booting stage. * The next arg1 should be returned in 'a0'. */ fw_next_arg1: diff --git a/firmware/fw_payload.S b/firmware/fw_payload.S index b9cb151..84d9ad4 100644 --- a/firmware/fw_payload.S +++ b/firmware/fw_payload.S @@ -39,6 +39,8 @@ fw_save_info: .global fw_prev_arg1 /* * We can only use a0, a1, and a2 registers here. + * The a0, a1, and a2 registers will be same as passed by + * previous booting stage. * The previous arg1 should be returned in 'a0'. */ fw_prev_arg1: @@ -54,6 +56,8 @@ fw_prev_arg1: .global fw_next_arg1 /* * We can only use a0, a1, and a2 registers here. + * The a0, a1, and a2 registers will be same as passed by + * previous booting stage. * The next arg1 should be returned in 'a0'. */ fw_next_arg1: |