diff options
| author | Anup Patel <anup.patel@wdc.com> | 2020-05-23 09:07:15 +0300 |
|---|---|---|
| committer | Anup Patel <anup@brainfault.org> | 2020-06-05 06:32:30 +0300 |
| commit | 64f140830d758ebcf9d9b6ab071ae24fcc37b884 (patch) | |
| tree | ca4c8a1f9c57f61f6dfbed7176e1e16a2aed7a97 /firmware | |
| parent | 30b60401e1a88164d91ed0c7cccaecb17f71afd8 (diff) | |
| download | opensbi-64f140830d758ebcf9d9b6ab071ae24fcc37b884.tar.xz | |
firmware: fw_base: Make builtin DTB available to fw_platform_init()
Currently, fw_prev_arg1() is called after fw_platform_init() which
caused builtin DTB to be not available to fw_platform_init().
To allow builtin DTB available to fw_platform_init(), we should
call fw_save_info() and fw_prev_arg1() before fw_platform_init().
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
Diffstat (limited to 'firmware')
| -rw-r--r-- | firmware/fw_base.S | 28 |
1 files changed, 14 insertions, 14 deletions
diff --git a/firmware/fw_base.S b/firmware/fw_base.S index 732bc3b..b28119a 100644 --- a/firmware/fw_base.S +++ b/firmware/fw_base.S @@ -177,6 +177,20 @@ _bss_zero: li s5, (SBI_SCRATCH_SIZE * 2) add sp, s4, s5 + /* Allow main firmware to save info */ + MOV_5R s0, a0, s1, a1, s2, a2, s3, a3, s4, a4 + call fw_save_info + MOV_5R a0, s0, a1, s1, a2, s2, a3, s3, a4, s4 + + /* Override previous arg1 */ + MOV_3R s0, a0, s1, a1, s2, a2 + call fw_prev_arg1 + add t1, a0, zero + MOV_3R a0, s0, a1, s1, a2, s2 + beqz t1, _prev_arg1_override_done + add a1, t1, zero +_prev_arg1_override_done: + /* * Initialize platform * Note: The a0 to a4 registers passed to the @@ -186,11 +200,6 @@ _bss_zero: call fw_platform_init MOV_5R a0, s0, a1, s1, a2, s2, a3, s3, a4, s4 - /* Allow main firmware to save info */ - MOV_5R s0, a0, s1, a1, s2, a2, s3, a3, s4, a4 - call fw_save_info - MOV_5R a0, s0, a1, s1, a2, s2, a3, s3, a4, s4 - /* Preload HART details * s7 -> HART Count * s8 -> HART Stack Size @@ -271,15 +280,6 @@ _scratch_init: add t1, t1, t2 blt t1, s7, _scratch_init - /* Override previous arg1 */ - MOV_3R s0, a0, s1, a1, s2, a2 - call fw_prev_arg1 - add t1, a0, zero - MOV_3R a0, s0, a1, s1, a2, s2 - beqz t1, _prev_arg1_override_done - add a1, t1, zero -_prev_arg1_override_done: - /* * Relocate Flatened Device Tree (FDT) * source FDT address = previous arg1 |